OMB APPROVAL OMB Number: 3235-0570 Expires: January 31, 2017 Estimated average burden hours per response.....20.6 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES 		Investment Company Act file number 811-21823 Pioneer Series Trust V (Exact name of registrant as specified in charter) 60 State Street, Boston, MA 02109 (Address of principal executive offices) (ZIP code) Terrence J. Cullen, Pioneer Investment Management, Inc., 60 State Street, Boston, MA 02109 (Name and address of agent for service) Registrant's telephone number, including area code: (617) 742-7825 Date of fiscal year end: August 31 Date of reporting period: September 1, 2014 through August 31, 2015 Form N-CSR is to be used by management investment companies to file reports with the Commission not later than 10 days after the transmission to stockholders of any report that is required to be transmitted to stockholders under Rule 30e-1 under the Investment Company Act of 1940 (17 CFR 270.30e-1). The Commission may use the information provided on Form N-CSR in its regulatory, disclosure review, inspection, and policymaking roles. A registrant is required to disclose the information specified by Form N-CSR, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-CSR unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. ss. 3507. ITEM 1. REPORTS TO STOCKHOLDERS. Pioneer Absolute Return Bond Fund -------------------------------------------------------------------------------- Annual Report | August 31, 2015 -------------------------------------------------------------------------------- Ticker Symbols: Class A ABRDX Class C ARCBX Class K ARBKX Class Y ARBYX [LOGO] PIONEER Investments(R) visit us: us.pioneerinvestments.com Table of Contents President's Letter 2 Portfolio Management Discussion 4 Portfolio Summary 10 Prices and Distributions 11 Performance Update 12 Comparing Ongoing Fund Expenses 16 Schedule of Investments 18 Financial Statements 29 Notes to Financial Statements 37 Report of Independent Registered Public Accounting Firm 56 Trustees, Officers and Service Providers 58 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 1 President's Letter Dear Shareowner, In the second half of 2015, two main issues have been dominating the attention of global investors and policymakers alike, and shaping the current investment environment: The Federal Reserve System's (the Fed's) deliberations over when to begin normalizing interest rates in the U.S., and the increasing divergence in economic activity around the globe. As 2015 began, market expectations were that the Fed would likely begin raising interest rates by the middle of the year, but a sluggish gross domestic product report in the first calendar quarter as well as relatively benign inflation and wage growth contributed to the Fed's taking a more cautionary approach and delaying the start of its rate-hike cycle. At the same time, however, the U.S. labor market has continued its robust improvement, moving the Fed closer to declaring victory on one of its main monetary policy objectives -- full employment. Meanwhile, global economic activity has continued to diverge, with developed economies experiencing above-trend growth and most emerging markets economies lagging the rest of the world. The slower pace of economic activity in the emerging markets has been most evident in China, as the country's economy continues to undergo a long, potentially painful adjustment from investment-led growth to consumption-oriented growth. This divergence in global economic cycles is likely to continue for some time, and we would expect an increased level of volatility as global capital markets and policymakers adjust. Pioneer Investments believes that investors in today's environment can potentially benefit from the consistent and disciplined investment approach we have used since our founding in 1928. We focus on identifying value across global markets using proprietary research, careful risk management, and a long-term perspective. Our ongoing goal is to produce compelling returns consistent with the stated objectives of our investment products, and with our shareowners' expectations. We believe our shareowners can benefit from the experience and tenure of our investment teams as well as the insights generated from our extensive research process. 2 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 As always, and particularly during times of market uncertainty, we encourage you to work with your financial advisor to develop an overall investment plan that addresses both your short-and long-term goals, and to implement such a plan in a disciplined manner. We greatly appreciate your trust in us in the past and look forward to continuing to serve you in the future. Sincerely, /s/ Lisa M. Jones Lisa M. Jones President and CEO Pioneer Investment Management USA, Inc. Any information in this shareowner report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 3 Portfolio Management Discussion | 8/31/15 In the following interview, portfolio managers Tanguy Le Saout and Cosimo Marasciulo discuss the factors that influenced Pioneer Absolute Return Bond Fund's performance during the 12-month period ended August 31, 2015, as well as their investment approach in managing the Fund. Mr. Le Saout, Head of European Fixed Income and a portfolio manager based in Pioneer's Dublin office, and Mr. Marasciulo, Head of Government Bonds and a portfolio manager at Pioneer, also based in Dublin, are responsible for the day-to-day management of the Fund. Q How did the Fund perform during the 12-month period ended August 31, 2015? A Pioneer Absolute Return Bond Fund's Class A shares returned -1.24% at net asset value during the 12-month period ended August 31, 2015, while the Fund's benchmark, the Bank of America Merrill Lynch (BofA ML) 3-Month U.S. Treasury Bill Index, returned 0.03%. During the same period, the average return of the 231 mutual funds in Lipper's Alternative Credit Focus Funds category was -2.22%, and the average return of the 418 mutual funds in Morningstar's Non-Traditional Bond Funds category was -1.38%. Q Can you provide an overview of the Fund's investment approach? A The big picture is that we aim to have the Fund's annualized return exceed that of three-month Treasury bills, while targeting portfolio volatility that is similar to that of T-bills as well. To achieve this, we seek to provide positive absolute Fund returns, regardless of market conditions. Obviously, if we are going to be successful in achieving our goals, the Fund's returns cannot be overly dependent on the price performance of one or more fixed-income categories. Therefore, in seeking positive Fund returns regardless of market conditions, we divide the portfolio into two distinct parts. The core of the Fund's portfolio is currently invested in three-month Treasury bills. This part of the portfolio effectively aims to match the return of the BofA ML Index benchmark. For the remainder of the portfolio, an overlay approach is utilized, based on investments in a wide variety of lowly correlated, highly diversified securities which we believe are sources of potential return for the Fund. Each of those investments is designed to provide the Fund with alpha, or excess return. (Alpha measures risk-adjusted performance, representing excess return relative to the return of the benchmark.) 4 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 The overlay approach is mainly implemented via investments in derivatives; however, in cases where derivatives cannot be used, the remaining 30% of the portfolio's "alpha-geared" investments can be allocated into bonds, each of which is focused on a different segment of the fixed-income market. Importantly, each investment in the "alpha" sleeve of the Fund's portfolio seeks to benefit from both positive and negative market returns. This means the Fund is positioned in some asset categories within the broad bond market through long exposures, while also positioned against other asset categories via short exposures. This, in our view, provides the Fund with an added level of diversification* across different asset classes when compared with investment vehicles where asset allocation and security selection are more closely tied together. Importantly, we closely track the portfolio risks we have assumed across all of the alpha-related strategies, and operate within an overall "risk budget" for the portfolio based on our objective of avoiding negative Fund returns over a 12-month period. Q Can you review the investment strategies that detracted from the Fund's performance during the 12-month period ended August 31, 2015? A The Fund's underperformance of the benchmark during the period was attributable to a few factors. First, the portfolio was short two- and five-year U.S. Treasuries early in the period in anticipation of rising interest rates due to solidifying market expectations with respect to future rate hikes by the U.S. Federal Reserve System (the Fed). The short positions detracted from performance as interest rates in the U.S. made an unprecedented intra-day roundtrip journey in mid-October 2014, declining sharply on a wave of disappointing economic data releases before bouncing back close to their starting point. We closed the short positions at a loss to the Fund prior to the rebound in rates as the period progressed. Also, the Fund's interest-rate exposure in Europe detracted from performance during the 12-month period. We had decided to go short in the portfolio on longer-term rates, which then declined when the European Central Bank (ECB) announced plans to implement a quantitative easing (QE) sovereign-bond purchase program. We closed that position at a loss pursuant to the Fund's risk-management guidelines. We did, however, subsequently reinstate the position, which added some value to performance over the last several weeks of the period. Finally, the portfolio's positioning with respect to inflation was another meaningful detractor from Fund performance during the period. We took a position based on the view that the market was overly pessimistic with * Diversification does not assure a profit nor protect against loss. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 5 respect to global inflation levels, especially given the ECB's announcement regarding its QE program designed to stimulate economic activity. However, the steep decline in oil prices during the 12-month period led to a lowering of market inflation expectations, a development which caused the portfolio's inflation stance to hurt Fund performance. Q Can you review the investment strategies that benefited the Fund's performance during the 12-month period ended August 31, 2015? A In addition to the core position in three-month Treasuries, we established a number of different positions across the alpha portion of the portfolio. The Fund's relative-value positions were the leading positive contributors to returns over the 12 months. In particular, the Fund had a position designed to benefit from a narrowing in market expectations regarding the future spread between European five-year interest rates versus U.S. and Swiss five-year rates. The position contributed to the Fund's performance as Swiss rates fell on the news that the country's central bank would discontinue efforts to cap the value of the Swiss currency against the euro. Another investment strategy that worked well for the Fund during the period was based on a quantitative model which looks at the price action on 10-year and five-year German bonds in order to determine when to go long or short on the 10-year issue. Pursuant to the model, the Fund was long the 10-year German bond for much of the period as German rates fell, and then we moved to a short position just in time for the Fund's performance to benefit when rates backed up late in the period. A successful example of this strategy was our decision to pair a long position in the Norwegian 10-year bond with a short position in the German 10-year bond, in anticipation that investors would seek AAA-rated issues outside of low-yielding Germany in the wake of the ECB's announcement of its QE program. Finally, we utilized a derivatives-based approach to gain portfolio exposure to the Chinese five-year sovereign bond, which allowed the Fund's performance to benefit as the Chinese government devalued its currency late in the period and interest rates in the country declined. 6 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Q Please discuss the role of derivatives in implementing the Fund's investment approach and their impact on the Fund's performance during the 12-month period ended August 31, 2015. A Virtually all of the Fund's strategies are implemented via derivatives, and so the Fund's performance will always be influenced by the use of such securities. For instance, when we want to short U.S. Treasuries in the portfolio, we will do so mainly by selling Treasury futures, or sometimes by buying "put" options. (A "put" option is a contractual agreement that gives the contract owner the right, but not the obligation, to sell a security at a pre-determined, fixed price for a certain period of time, regardless of the current market price of that security.) Similarly, with the portfolio's currency investments, we use forward contracts and options to gain the desired exposures. With respect to credit markets where there are no liquid futures contracts, we may use credit default swaps to manage the portfolio's exposures. In other situations, we utilize instruments such as interest-rate or inflation swaps to implement our investment views. Q What is your assessment of the current macroeconomic climate and the opportunities it may present? A Looking at the U.S. economy, the employment picture has improved notably. We also believe upward pressure on wages is building and should follow the employment numbers before long. As such, our view is that there is little justification for the Fed to maintain a zero-interest-rate approach at this point, though market pressures may cause it to further delay any increase. Market participants appear to have become somewhat complacent with respect to the extent and pace of interest-rate increases once the Fed begins to move forward with raising them. Under these circumstances, we see little value in bonds, and so the Fund was short U.S. Treasuries as of the end of August. Higher U.S. rates could support another move upward for the U.S. dollar versus other major currencies, after its recent softening. At current yield levels, European bonds do not reflect much in the way of inflation or term premiums, however we believe the ECB's intervention is likely to have much of its desired impact on the region's economy, leading to higher growth. In particular, German bond yields are exceptionally low and the Fund was short that market at the end of the 12-month period. We have also positioned the Fund to potentially benefit from an uptick in U.K. rates if the Bank of England begins to tighten its monetary policy. With respect to peripheral European Union (E.U.) countries such as Italy and Spain, we view yield spreads (yield differences) versus the sovereign bonds of the core E.U. nations as overly tight. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 7 China has dominated the headlines of late, and we believe there is reason for concern about the outlook for its economy as the government seeks to reform and modernize over time, while maintaining growth at adequate levels. Should Chinese economic growth ease further, we could see additional currency devaluation, despite the government's protestations to the contrary. These are among the macroeconomic factors we will monitor closely as we seek to inform the various positions implemented within the alpha portion of the Fund's portfolio. Please refer to the Schedule of Investments on pages 18-28 for a full listing of Fund securities. All investments are subject to risk, including the possible loss of principal. Pioneer Absolute Return Bond invests in derivatives, such as options, futures, inverse floating-rate obligations, and swaps, among others, which can be illiquid, may disproportionately increase losses, and have a potentially large impact on the performance of the portfolio. The Fund may take short positions, which involves leverage of its assets and presents additional risks. The Fund may invest in credit default swaps, which may in some cases be illiquid, and they increase credit risk since the Fund has exposure to both the issuer of the referenced obligation and the counterparty to the credit default swap. The Fund employs leverage, which increases the volatility of investment returns and subjects the Fund to magnified losses. The Fund is subject to duration risk. Duration seeks to measure the price sensitivity of a fixed income security to interest rates. The longer a portfolio's duration, the more sensitive it will be to changes in interest rates. Investments in fixed-income securities involve interest rate, credit, inflation, and reinvestment risks. When interest rates rise, the prices of fixed-income securities in the Fund will generally fall. Conversely, when interest rates fall, the prices of fixed-income securities will generally rise. Investments in the Fund are subject to possible loss due to the financial failure of issuers of underlying securities and their inability to meet their debt obligations. Prepayment risk is the chance that an issuer may exercise its right to prepay its security, if falling interest rates prompt the issuer to do so. Forced to reinvest the unanticipated proceeds at lower interest rates, the Fund would experience a decline in income and lose the opportunity for additional price appreciation. Investments in high-yield or lower-rated securities are subject to greater-than-average price volatility, illiquidity and possibility of default. 8 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 The securities issued by U.S. Government-sponsored entities (e.g., FNMA, Freddie Mac) are neither guaranteed nor issued by the U.S. Government. The portfolio may invest in mortgage-backed securities, which during times of fluctuating interest rates may increase or decrease more than other fixed-income securities. Mortgage-backed securities are also subject to pre-payments. The Fund may invest in subordinated securities, which may be disproportionately adversely affected by a default or even a perceived decline in creditworthiness of the issuer. Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, economic, and political conditions. The Fund may invest in event-linked bonds and other insurance-linked securities. The return of principal and the payment of interest on insurance-linked securities are contingent on the non-occurrence of a pre-defined "trigger" event, such as a hurricane or an earthquake of a specific magnitude. The Fund may invest in floating-rate loans; the value of collateral, if any, securing a floating-rate loan can decline or may be insufficient to meet the issuer's obligations or may be difficult to liquidate. The Fund is non-diversified, which means that it can invest a large percentage of its assets in the securities of any one or more issuers. This increases the Fund's potential risk exposure. There is no assurance that these and other strategies used by the Fund will be successful. The Fund is not intended to outperform stocks and bonds during strong market rallies. Please see the prospectus for a more complete discussion of the Fund's risks. Before investing, consider the product's investment objectives, risks, charges and expenses. Contact your advisor or Pioneer Investments for a prospectus or summary prospectus containing this information. Read it carefully. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. Past performance is no guarantee of future results. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 9 Portfolio Summary | 8/31/15 Portfolio Diversification -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] U.S. Government Securities 64.4% Foreign Government Bonds 32.3% Swaptions 3.1% Options 0.2% Geographical Diversification -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] United States 67.7% Spain 12.5% Germany 7.4% Ireland 4.6% Italy 4.0% Japan 2.2% Norway 1.6% 10 Largest Holdings -------------------------------------------------------------------------------- (As a percentage of long-term holdings)* 1. U.S. Treasury Bills, 1/7/16 21.93% -------------------------------------------------------------------------------- 2. U.S. Treasury Bills, 7/21/16 21.78 -------------------------------------------------------------------------------- 3. U.S. Treasury Bills, 11/12/15 12.99 -------------------------------------------------------------------------------- 4. Spain Letras del Tesoro, 2/19/16 10.27 -------------------------------------------------------------------------------- 5. U.S. Treasury Bills, 3/3/16 7.69 -------------------------------------------------------------------------------- 6. Deutsche Bundesrepublik Inflation Linked Bond, 0.1%, 4/15/23 5.53 -------------------------------------------------------------------------------- 7. Italy Buoni Poliennali Del Tesoro, 2.35%, 9/15/19 2.78 -------------------------------------------------------------------------------- 8. Spain Government Bond, 5.15%, 10/31/44 2.27 -------------------------------------------------------------------------------- 9. Japanese Government CPI Linked Bond, 0.1%, 9/10/23 2.08 -------------------------------------------------------------------------------- 10. Ireland Government Bond, 3.4%, 3/18/24 1.71 -------------------------------------------------------------------------------- * This list excludes temporary cash investments and derivative instruments. Due to the exclusion of derivatives, the list may not represent the Fund's market exposures. See the Schedule of Investments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 10 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Prices and Distributions | 8/31/15 Net Asset Value per Share -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Class 8/31/15 8/31/14 -------------------------------------------------------------------------------- A $9.67 $9.88 -------------------------------------------------------------------------------- C $9.63 $9.84 -------------------------------------------------------------------------------- Y $9.69 $9.90 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Class 8/31/15 12/31/14** -------------------------------------------------------------------------------- K $9.70 $9.64 -------------------------------------------------------------------------------- Distributions per Share: 9/1/14-8/31/15 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains -------------------------------------------------------------------------------- A $0.0877 $-- $-- -------------------------------------------------------------------------------- C $0.0193 $-- $-- -------------------------------------------------------------------------------- K $ -- $-- $-- -------------------------------------------------------------------------------- Y $0.1125 $-- $-- -------------------------------------------------------------------------------- Index Definitions -------------------------------------------------------------------------------- The Bank of America Merrill Lynch (BofA ML) 3-month US Treasury Bill Index is an unmanaged market index of U.S. Treasury securities maturing in 90 days, that assumes reinvestment of all income. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. It is not possible to invest directly in an index. The index defined here pertains to the "Value of $10,000 Investment" and "Value of $5 Million Investment" charts appearing on pages 12-15. ** Share class commenced operations on December 31, 2014. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 11 Performance Update | 8/31/15 Class A Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class A shares of Pioneer Absolute Return Bond Fund at public offering price during the periods shown, compared to that of the Bank of America Merrill Lynch (BofA ML) 3-month US Treasury Bill Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- Net Public BofA ML Asset Offering 3-Month Value Price U.S. Treasury Period (NAV) (POP) Bill Index -------------------------------------------------------------------------------- Life-of-Class (1/30/14) -1.54% -4.35% 0.03% -------------------------------------------------------------------------------- 1 Year -1.24 -5.72 0.03 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.61% 1.15% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Absolute BofA ML 3-month Dates Return Bond Fund US Treasury Bill Index 1/14 $9,550 $10,000 8/14 $9,436 $10,002 8/15 $9,320 $10,005 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 4.50% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2016, for Class A shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 12 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Performance Update | 8/31/15 Class C Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class C shares of Pioneer Absolute Return Bond Fund during the periods shown, compared to that of the Bank of America Merrill Lynch (BofA ML) 3-month US Treasury Bill Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- BofA ML 3-Month If If U.S. Treasury Period Held Redeemed Bill Index -------------------------------------------------------------------------------- Life-of-Class (1/30/14) -2.23% -2.23% 0.03% -------------------------------------------------------------------------------- 1 Year -1.94 -1.94 0.03 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 3.35% 1.90% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Absolute BofA ML 3-month Dates Return Bond Fund US Treasury Bill Index 1/14 $10,000 $10,000 8/14 $ 9,840 $10,002 8/15 $ 9,649 $10,005 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2016, for Class C shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 13 Performance Update | 8/31/15 Class K Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class K shares of Pioneer Absolute Return Bond Fund during the periods shown, compared to that of the Bank of America Merrill Lynch (BofA ML) 3-month US Treasury Bill Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- Net BofA ML Asset 3-Month Value U.S. Treasury Period (NAV) Bill Index -------------------------------------------------------------------------------- Life-of-Class (1/30/14) -1.34% 0.03% -------------------------------------------------------------------------------- 1 Year -0.93 0.03 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 2.35% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Absolute BofA ML 3-month Dates Return Bond Fund US Treasury Bill Index 1/14 $10,000 $10,000 8/14 $9,880 $10,002 8/15 $9,788 $10,005 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. The performance shown for Class K shares for the period prior to the commencement of operations of Class K shares on December 31, 2014, is the net asset value performance of the Fund's Class A shares, which has not been restated to reflect any differences in expenses, including Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares generally are higher than those of Class K shares, the performance of Class K shares prior to their inception would have been higher than the performance shown. For the period beginning December 31, 2014, the actual performance of Class K shares is reflected. Class K shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 14 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Performance Update | 8/31/15 Class Y Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Class Y shares of Pioneer Absolute Return Bond Fund during the periods shown, compared to that of the Bank of America Merrill Lynch (BofA ML) 3-month US Treasury Bill Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- Net BofA ML Asset 3-Month Value U.S. Treasury Period (NAV) Bill Index -------------------------------------------------------------------------------- Life-of-Class (1/30/14) -1.25% 0.03% -------------------------------------------------------------------------------- 1 Year -0.98 0.03 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.36% 0.75% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Absolute BofA ML 3-month Dates Return Bond Fund US Treasury Bill Index 1/14 $5,000,000 $5,000,000 8/14 $4,950,000 $5,001,045 8/15 $4,901,483 $5,002,358 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2016, for Class Y shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 15 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value (divided by) $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Absolute Return Bond Fund Based on actual returns from March 1, 2015, through August 31, 2015. ------------------------------------------------------------------------------------------------------ Share Class A C K Y ------------------------------------------------------------------------------------------------------ Beginning Account Value on 3/1/15 $1,000.00 $1,000.00 $1,000.00 $1,000.00 ------------------------------------------------------------------------------------------------------ Ending Account Value (after expenses) on 8/31/15 $ 998.89 $ 995.84 $1,010.34 $1,001.01 ------------------------------------------------------------------------------------------------------ Expenses Paid During Period* $ 5.19 $ 8.95 $ 3.80 $ 3.78 ------------------------------------------------------------------------------------------------------ * Expenses are equal to the Fund's annualized net expense ratio of 1.03%, 1.78%, 0.75% and 0.75% for Class A, Class C, Class K and Class Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/365 (to reflect the one-half year period). 16 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Absolute Return Bond Fund Based on a hypothetical 5% return per year before expenses, reflecting the period from March 1, 2015, through August 31, 2015. ----------------------------------------------------------------------------------------------------- Share Class A C K Y ----------------------------------------------------------------------------------------------------- Beginning Account Value on 3/1/15 $1,000.00 $1,000.00 $1,000.00 $1,000.00 ----------------------------------------------------------------------------------------------------- Ending Account Value (after expenses) on 8/31/15 $1,020.01 $1,016.23 $1,021.42 $1,021.42 ----------------------------------------------------------------------------------------------------- Expenses Paid During Period* $ 5.21 $ 9.05 $ 3.82 $ 3.82 ----------------------------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized net expense ratio of 1.03%, 1.78%, 0.75% and 0.75% for Class A, Class C, Class K and Class Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/365 (to reflect the one-half year period). Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 17 Schedule of Investments | 8/31/15 ---------------------------------------------------------------------------------------------------- Principal Amount ($) Value ---------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATIONS -- 64.2% 4,560,000 U.S. Treasury Bills, 1/7/16 (b) $ 4,558,198 2,700,000 U.S. Treasury Bills, 11/12/15 (b)(c) 2,699,946 1,600,000 U.S. Treasury Bills, 3/3/16 (b) 1,597,906 4,540,000 U.S. Treasury Bills, 7/21/16 (b) 4,526,094 ----------- $13,382,144 ---------------------------------------------------------------------------------------------------- TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATIONS (Cost $13,383,129) $13,382,144 ---------------------------------------------------------------------------------------------------- FOREIGN GOVERNMENT BONDS -- 32.2% EURO 987,791 Deutsche Bundesrepublik Inflation Linked Bond, 0.1%, 4/15/23 $ 1,149,206 EURO 161,922 Deutsche Bundesrepublik Inflation Linked Bond, 0.1%, 4/15/26 189,582 EURO 163,138 Deutsche Bundesrepublik Inflation Linked Bond, 0.1%, 4/15/46 192,567 EURO 259,000 Ireland Government Bond, 2.4%, 5/15/30 308,515 EURO 270,000 Ireland Government Bond, 3.4%, 3/18/24 355,686 EURO 220,000 Ireland Government Bond, 3.9%, 3/20/23 297,785 EURO 476,889 Italy Buoni Poliennali Del Tesoro, 2.35%, 9/15/19 578,493 EURO 166,000 Italy Buoni Poliennali Del Tesoro, 4.75%, 9/1/44 250,881 JPY 3,597,405 Japanese Government CPI Linked Bond, 0.1%, 3/10/24 31,384 JPY 49,632,000 Japanese Government CPI Linked Bond, 0.1%, 9/10/23 432,378 NOK 2,600,000 Norway Government Bond, 1.75%, 3/13/25 320,835 EURO 305,000 Spain Government Bond, 5.15%, 10/31/44 472,597 EURO 1,900,000 Spain Letras del Tesoro, 2/19/16 (b) 2,133,966 ----------- $ 6,713,875 ---------------------------------------------------------------------------------------------------- TOTAL FOREIGN GOVERNMENT BONDS (Cost $6,966,854) $ 6,713,875 ---------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------- Principal Strike Expiration Amount ($) Description Counterparty Price Date Value ---------------------------------------------------------------------------------------------------- CURRENCY CALL OPTIONS PURCHASED -- 0.1% 120,000 Call USD Put JPY Goldman Sachs & Co. 121.50 11/19/15 $ 2,013 230,000 Call USD Put CNY Barclays Plc 6.40 10/25/16 9,264 250,000 Call USD Put CNY Barclays Plc 6.40 10/25/16 10,070 250,000 Call USD Put CNY Deutsche Bank 6.40 10/25/16 10,070 ---------------------------------------------------------------------------------------------------- $ 31,417 TOTAL CURRENCY CALL OPTIONS PURCHASED ----------- (Premiums paid $14,684) $ 31,417 ---------------------------------------------------------------------------------------------------- CURRENCY PUT OPTIONS PURCHASED -- 0.1% 130,000 Put USD Call TRY Goldman Sachs & Co. 2.65 6/28/16 $ 394 280,000 Put USD Call JPY Barclays Plc 122.90 9/18/15 5,477 280,000 Put USD Call JPY Goldman Sachs & Co. 124.00 9/2/15 6,722 ---------------------------------------------------------------------------------------------------- $ 12,593 TOTAL CURRENCY PUT OPTIONS PURCHASED ----------- (Premiums paid $5,387) $ 12,593 ---------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 18 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 -------------------------------------------------------------------------------------------------------------- Principal Pay/ Floating Pay/ Fixed Expiration Amount ($) Receive Rate Receive Rate Counterparty Date Value -------------------------------------------------------------------------------------------------------------- INTEREST RATE SWAPTIONS PURCHASED -- 3.1% 500,000 Receive USD 10Y Pay 2.74% Morgan Stanley Co. 3/9/17 $ 16,807 500,000 Pay USD 10Y Receive 2.74% Morgan Stanley Co. 3/9/17 21,144 EURO 600,000 Receive EUR 10Y Pay 2.21% Goldman Sachs & Co. 11/12/15 18 EURO 2,400,000 Receive EUR 10Y Pay 2.21% Goldman Sachs & Co. 11/12/15 74 2,200,000 Receive USD 2Y Pay 1.65% Goldman Sachs & Co. 11/9/15 219 EURO 600,000 Pay EUR 10Y Receive 0.80% Goldman Sachs & Co. 11/12/15 1,001 2,250,000 Receive USD 2Y Pay 1.71% Morgan Stanley Co. 2/23/16 2,222 EURO 900,000 Pay EUR 30Y Receive 0.80% Goldman Sachs & Co. 1/26/46 3,457 EURO 2,400,000 Pay EUR 10Y Receive 0.80% Morgan Stanley Co. 11/12/15 4,005 EURO 600,000 Receive EUR 10Y Pay 1.21% Goldman Sachs & Co. 11/12/15 6,418 EURO 625,000 Pay EUR 10Y Receive 0.97% Morgan Stanley Co. 2/13/17 9,789 2,250,000 Pay USD 2Y Receive 1.70% Morgan Stanley Co. 2/23/16 24,534 EURO 2,400,000 Receive EUR 10Y Pay 1.21% Goldman Sachs & Co. 11/12/15 25,670 2,200,000 Pay USD 2Y Receive 1.65% Goldman Sachs & Co. 11/9/15 28,075 JPY 275,000,000 Receive JPY 5 Y Pay 0.96% Barclays Plc 5/22/20 34,732 EURO 625,000 Receive EUR 10Y Pay 0.97% Morgan Stanley Co. 2/13/17 39,422 JPY 275,000,000 Pay JPY 5 Y Receive 0.96% Barclays Plc 5/22/20 44,772 1,000,000 Pay USD 30Y Receive 2.80% Goldman Sachs & Co. 5/26/17 77,848 1,000,000 Receive USD 30Y Pay 2.80% Goldman Sachs & Co. 5/26/17 93,721 EURO 900,000 Receive EUR 30Y Pay 0.80% Goldman Sachs & Co. 1/22/16 208,219 -------------------------------------------------------------------------------------------------------------- TOTAL INTEREST RATE SWAPTIONS PURCHASED $ 642,147 ----------- (Premiums paid $619,217) $ 642,147 -------------------------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 99.7% (Cost $20,989,271) (a) $20,782,176 -------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 19 Schedule of Investments | 8/31/15 (continued) -------------------------------------------------------------------------------------------------------------- Principal Pay/ Floating Pay/ Fixed Expiration Amount ($) Receive Rate Receive Rate Counterparty Date Value -------------------------------------------------------------------------------------------------------------- INTEREST RATE SWAPTIONS WRITTEN -- (1.7)% EURO (2,500,000) Receive EUR 10Y Pay 0.56% Goldman Sachs & Co. 1/26/26 $ (171,590) GBP (600,000) Pay GBP 30Y Receive 2.30% Goldman Sachs & Co. 5/26/17 (82,519) GBP (600,000) Receive GBP 30Y Pay 2.30% Goldman Sachs & Co. 5/26/17 (81,905) EURO (1,200,000) Receive EUR 10Y Pay 1.71% Goldman Sachs & Co. 11/12/15 1,029 EURO (4,800,000) Receive EUR 10Y Pay 1.71% Goldman Sachs & Co. 11/12/15 (4,116) EURO (2,500,000) Pay EUR 10Y Receive 0.56% Goldman Sachs & Co. 1/22/16 (2,769) ----------- $ (341,870) -------------------------------------------------------------------------------------------------------------- TOTAL INTEREST RATE SWAPTIONS WRITTEN (Premiums received $(325,169)) $ (341,870) -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- Principal Strike Expiration Amount ($) Description Counterparty Price Date Value -------------------------------------------------------------------------------------------------------------- CURRENCY CALL OPTIONS WRITTEN -- (0.0)%+ (130,000) Call USD Put TRY Goldman Sachs & Co. 3.70 6/28/16 $ (3,180) (80,000) Call USD Put TRY Credit Suisse 3.40 11/3/15 (243) ----------- $ (3,423) -------------------------------------------------------------------------------------------------------------- TOTAL CURRENCY CALL OPTIONS WRITTEN (Premiums received $(3,339)) $ (3,423) -------------------------------------------------------------------------------------------------------------- OTHER ASSETS & LIABILITIES -- 2.0% $ 411,408 -------------------------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $20,848,291 ============================================================================================================== + Amount rounds to less than 0.1% or (0.1)% (a) At August 31, 2015, the net unrealized depreciation on investments based on cost for federal income tax purposes of $20,989,271 was as follows: Aggregate gross unrealized appreciation for all investments in which there is an excess of value over tax cost $ 235,906 Aggregate gross unrealized depreciation for all investments in which there is an excess of tax cost over value (443,001) ---------- Net unrealized depreciation $ (207,095) ========== (b) Security issued with a zero coupon. Income is earned through accretion of discount. Principal amounts are denominated in U.S. Dollars unless otherwise noted: CNY New Chinese Yuan EURO European Euro GBP British Pound Sterling JPY Japanese Yen NOK Norwegian Krone TRY Turkish Lira (c) All or a portion of this security has been pledged in connection with open futures and swap contracts. The accompanying notes are an integral part of these financial statements. 20 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Purchases and sales of securities (excluding temporary cash investments) for the year ended August 31, 2015 aggregated $5,569,816 and $5,274,118, respectively. CREDIT DEFAULT SWAP AGREEMENTS -- BUY PROTECTION ------------------------------------------------------------------------------------------------------ Net Notional Obligation Expiration Premiums Unrealized Principal ($) Counterparty Entity/Index Coupon Date Received Appreciation ------------------------------------------------------------------------------------------------------ (2,000,000) Morgan Stanley Capital Kingdom of Services LLC Spain 1.00% 6/20/20 $ (13,291) $ 912 ------------------------------------------------------------------------------------------------------ CENTRALLY CLEARED CREDIT DEFAULT SWAP AGREEMENTS -- SELL PROTECTION ------------------------------------------------------------------------------------------------------ Net Notional Obligation Credit Expiration Premiums Unrealized Principal ($)(1) Counterparty Entity/Index Coupon Rating(2) Date Paid Appreciation ------------------------------------------------------------------------------------------------------ EUR1,900,000 Intercontinental Markit iTraxx Exchange Europe Index 1.00% A- 6/20/20 $25,097 $ 8,058 ------------------------------------------------------------------------------------------------------- (1) The notional amount is the maximum amount that a seller of credit protection would be obligated to pay upon occurrence of a credit event. (2) Based on Standard & Poor's rating of the issuer or weighted average of all the underlying securities of the index. NOTE: Principal amounts are denominated in U.S. Dollars unless otherwise noted: EUR Euro INFLATION RATE SWAP AGREEMENTS ----------------------------------------------------------------------------------------------------------------- Net Unrealized Notional Pay/ Annual Expiration Appreciation Principal ($) Counterparty Receive Index Fixed Rate Date (Depreciation) ----------------------------------------------------------------------------------------------------------------- 498,000 Credit Suisse International Pay USCPI 2.138% 3/3/19 $ 22,441 994,250 Credit Suisse International Pay USCPI 2.145% 2/7/19 43,225 EUR (320,000) Goldman Sachs International Pay EUCPI 0.750% 3/3/20 (459) EUR (140,000) Goldman Sachs International Receive EUCPI 0.825% 12/5/19 (1,674) EUR (600,000) Goldman Sachs International Receive EUCPI 1.209% 2/5/25 (3,337) EUR 600,000 Goldman Sachs International Pay EUCPI 0.770% 2/5/20 2,453 EUR (320,000) Goldman Sachs International Receive EUCPI 1.200% 3/3/25 142 EUR (367,500) Morgan Stanley Capital Services LLC Receive EUCPI 1.238% 2/7/19 (15,488) The accompanying notes are an integral part of these financial statements. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 21 Schedule of Investments | 8/31/15 (continued) INFLATION RATE SWAP AGREEMENTS (continued) ------------------------------------------------------------------------------------------------------------ Net Unrealized Notional Pay/ Annual Expiration Appreciation Principal ($) Counterparty Receive Index Fixed Rate Date (Depreciation) ------------------------------------------------------------------------------------------------------------ EUR (181,000) Morgan Stanley Capital Services LLC EUR (575,000) Morgan Stanley Capital Receive EUCPI 1.210% 3/3/19 $ (7,524) Services LLC 480,000 Morgan Stanley Capital Pay EUCPI 0.525% 1/20/20 (4,797) Services LLC EUR (310,000) Morgan Stanley Capital Pay USCPI 1.647% 2/20/20 3,273 Services LLC 338,000 Morgan Stanley Capital Receive EUCPI 0.728% 2/26/20 (514) Services LLC EUR 155,000 Goldman Sachs Pay USCPI 1.700% 12/5/19 11,173 International EUR (155,000) Goldman Sachs Pay EUCPI 0.990% 3/30/20 1,911 International EUR (275,000) Morgan Stanley Capital Receive EUCPI 1.345% 3/30/25 (2,502) Services LLC EUR (300,000) Morgan Stanley Capital Receive EUCPI 1.078% 5/22/19 (3,824) Services LLC EUR (900,000) Goldman Sachs Receive EUCPI 0.988% 5/29/19 (2,929) International GBP 650,000 Goldman Sachs Receive EUCPI 1.153% 6/9/20 (17,096) International EUR 510,000 Goldman Sachs Pay UKRPI 2.933% 6/5/20 13,684 International EUR (598,000) Morgan Stanley Capital Pay EUCPI 1.548% 6/30/25 17,412 Services LLC EUR 350,000 Goldman Sachs Pay EUCPI 0.853% 8/17/20 (1,651) International EUR (350,000) Goldman Sachs Pay EUCPI 0.839% 8/17/20 691 International GBP 416,000 Morgan Stanley Capital Receive EUCPI 0.839% 8/17/25 (312) Services LLC EUR 200,000 Morgan Stanley Capital Pay UKRPI 2.865% 8/13/20 5,040 Services LLC EUR (575,000) Morgan Stanley Capital Pay EUCPI 1.120% 8/26/25 (2,861) Services LLC Receive EUCPI 1.030% 1/20/25 7,194 ------------------------------------------------------------------------------------------------------------ $ 63,671 ============================================================================================================ The accompanying notes are an integral part of these financial statements. 22 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 EUCPI Eurostat Eurozone HICP Ex Tobacco Unrevised Series NSA USCPI United States Consumer Price Index UKRPI United Kingdom Retail Price Index NOTE: Principal amounts are denominated in U.S. Dollars unless otherwise noted: EUR Euro GBP British Pound Sterling INTEREST RATE SWAP AGREEMENTS --------------------------------------------------------------------------------------------------------------- Net Annual Unrealized Notional Pay/ Floating Fixed Expiration Appreciation Principal ($) Counterparty Receive Rate Rate Date (Depreciation) --------------------------------------------------------------------------------------------------------------- AUD (545,000) Morgan Stanley Capital Services LLC Receive LIBOR AUD 3 Month 3.600% 10/16/24 $ (22,898) AUD (588,500) Morgan Stanley Capital Services LLC Receive LIBOR AUD 3 Month 3.280% 1/13/25 5,232 AUD (618,000) Morgan Stanley Capital Services LLC Receive LIBOR AUD 3 Month 3.160% 2/5/25 8,132 AUD (655,000) Morgan Stanley Capital Services LLC Receive LIBOR AUD 3 Month 3.240% 5/22/25 (11,330) AUD (701,000) Morgan Stanley Capital Services LLC Receive LIBOR AUD 3 Month 3.210% 7/23/25 (10,629) EUR (1,930,000) Deutsche Bank Receive EURIBOR 6 Month 2.703% 7/9/23 (165,368) EUR (970,000) Deutsche Bank Receive EURIBOR 6 Month 1.530% 12/15/64 (8,882) EUR 400,000 Deutsche Bank Pay EURIBOR 6 Month 1.320% 2/16/55 (8,902) EUR 300,000 Deutsche Bank Pay EURIBOR 6 Month 0.290% 2/26/20 (788) EUR 140,000 Deutsche Bank Pay EURIBOR 6 Month 0.410% 12/5/19 852 EUR 1,105,000 Deutsche Bank Pay EONIA 1 Day Interbank Rate 0.730% 3/20/45 (218,326) EUR 691,000 Deutsche Bank Pay EONIA 1 Day Interbank Rate 0.290% 3/20/25 (36,951) EUR 200,000 Deutsche Bank Pay EONIA 1 Day Interbank Rate 1.490% 3/20/45 2,372 EUR 1,310,000 Deutsche Bank Pay EONIA 1 Day Interbank Rate 0.760% 11/25/24 (5,184) EUR 1,460,000 Deutsche Bank Pay EONIA 1 Day Interbank Rate 1.890% 7/27/35 (16,994) EUR (1,375,000) Deutsche Bank Receive EURIBOR 6 Month 0.920% 3/20/45 252,741 EUR 275,000 Deutsche Bank Pay EURIBOR 6 Month 0.270% 5/22/19 71 EUR (300,000) Deutsche Bank Pay EURIBOR 6 Month 0.260% 5/29/19 (99) EUR 2,650,000 Deutsche Bank Pay EURIBOR 6 Month 0.600% 6/9/19 9,837 The accompanying notes are an integral part of these financial statements. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 23 Schedule of Investments | 8/31/15 (continued) INTEREST RATE SWAP AGREEMENTS (continued) ---------------------------------------------------------------------------------------------------------------- Net Annual Unrealized Notional Pay/ Floating Fixed Expiration Appreciation Principal ($) Counterparty Receive Rate Rate Date (Depreciation) ---------------------------------------------------------------------------------------------------------------- EUR 900,000 Deutsche Bank Pay EURIBOR 6 Month 0.520% 6/9/20 $ 5,857 EUR (250,000) Deutsche Bank Receive EURIBOR 6 Month 1.650% 3/20/45 (2,476) EUR (450,000) Deutsche Bank Receive EURIBOR 6 Month 1.350% 1/26/26 (7,402) EUR 310,000 Deutsche Bank Pay EURIBOR 6 Month 1.820% 12/15/54 2,952 EUR (230,000) Deutsche Bank Receive EURIBOR 6 Month 1.480% 12/15/64 (1,484) EUR 1,000,000 Deutsche Bank Pay EURIBOR 6 Month 0.560% 7/14/19 2,171 EUR 125,000 Deutsche Bank Pay EURIBOR 6 Month 1.520% 2/15/27 1,348 EUR 598,000 Deutsche Bank Pay EURIBOR 6 Month 0.380% 8/17/20 (2,175) EUR (510,000) Deutsche Bank Receive EURIBOR 6 Month 0.980% 2/16/65 10,779 EUR 184,000 Deutsche Bank Pay EURIBOR 6 Month 0.940% 3/3/19 5,866 EUR 372,500 Deutsche Bank Pay EURIBOR 6 Month 1.004% 2/7/19 13,172 EUR 660,000 Deutsche Bank Pay EURIBOR 6 Month 1.800% 12/15/54 5,368 GBP (1,100,000) Deutsche Bank Receive LIBOR GBP 6 Month 1.380% 2/5/19 2,864 GBP (1,100,000) Deutsche Bank Receive LIBOR GBP 6 Month 1.420% 2/8/19 788 GBP (340,000) Deutsche Bank Receive LIBOR GBP 6 Month 1.960% 5/5/25 (618) GBP (665,000) Deutsche Bank Receive LIBOR GBP 6 Month 1.620% 6/5/20 (4,756) GBP (434,000) Deutsche Bank Receive LIBOR GBP 6 Month 1.670% 8/13/20 (2,776) GBP (350,000) Deutsche Bank Receive LIBOR GBP 6 Month 2.140% 8/20/45 5,343 INR 33,700,000 Barclays Bank Plc Pay Mumbai Interbank Offer Rate 6.960% 2/12/17 (599) INR (14,400,000) Barclays Bank Plc Receive Mumbai Interbank Offer Rate 6.560% 2/12/20 4,552 INR 33,700,000 Goldman Sachs Mumbai Interbank International Pay Offer Rate 6.820% 2/3/17 (3,523) INR (14,400,000) Goldman Sachs Mumbai Interbank International Receive Offer Rate 6.430% 2/3/20 5,392 INR 40,600,000 Morgan Stanley Mumbai Interbank Capital Services LLC Pay Offer Rate 6.940% 2/26/17 (793) INR 33,700,000 Morgan Stanley Mumbai Interbank Capital Services LLC Pay Offer Rate 6.930% 2/4/17 (906) INR (14,400,000) Morgan Stanley Mumbai Interbank Capital Services LLC Receive Offer Rate 6.540% 2/4/20 4,344 INR (17,300,000) Morgan Stanley Mumbai Interbank Capital Services LLC Receive Offer Rate 6.560% 2/26/20 4,800 INR 33,200,000 Morgan Stanley Mumbai Interbank Capital Services LLC Pay Offer Rate 7.010% 3/13/17 (1,065) The accompanying notes are an integral part of these financial statements. 24 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 INTEREST RATE SWAP AGREEMENTS (continued) ---------------------------------------------------------------------------------------------------------------- Net Annual Unrealized Notional Pay/ Floating Fixed Expiration Appreciation Principal ($) Counterparty Receive Rate Rate Date (Depreciation) ---------------------------------------------------------------------------------------------------------------- INR (13,500,000) Morgan Stanley Mumbai Interbank Capital Services LLC Receive Offer Rate 6.800% 3/13/20 $ 1,576 INR 20,500,000 Goldman Sachs Mumbai Interbank International Pay Offer Rate 6.980% 5/27/17 (276) INR (9,000,000) Goldman Sachs Mumbai Interbank International Receive Offer Rate 6.870% 5/27/20 401 JPY (373,000,000) Deutsche Bank Receive LIBOR JPY 6 Month 0.310% 6/9/19 (6,572) JPY (136,000,000) Deutsche Bank Receive LIBOR JPY 6 Month 0.280% 7/14/19 (1,663) JPY (49,900,000) Deutsche Bank Receive LIBOR JPY 6 Month 0.620% 10/10/24 (5,314) JPY (137,000,000) Deutsche Bank Receive LIBOR JPY 6 Month 0.320% 2/4/22 (1,074) JPY (65,600,000) Deutsche Bank Receive LIBOR JPY 6 Month 2.010% 2/17/45 2,376 JPY (65,600,000) Deutsche Bank Receive LIBOR JPY 6 Month 1.990% 2/17/45 3,028 JPY 54,700,000 Deutsche Bank Pay LIBOR JPY 6 Month 1.900% 2/17/35 1,765 JPY 54,700,000 Deutsche Bank Pay LIBOR JPY 6 Month 1.920% 2/19/35 2,320 KRW 768,000,000 Goldman Sachs South Korea Overnight International Pay Interbank Rate 2.100% 2/3/25 1,637 NOK 2,826,000 Deutsche Bank Pay Norwegian Interbank Offer Rate 6 Month 1.790% 10/23/17 5,398 NOK 3,000,000 Morgan Stanley Norwegian Interbank Capital Services LLC Pay Offer Rate 6 Month 1.630% 11/12/17 4,650 NOK 2,826,000 Morgan Stanley Norwegian Interbank Capital Services LLC Pay Offer Rate 6 Month 1.760% 10/28/17 5,248 NOK 2,550,000 Goldman Sachs Norwegian Interbank International Pay Offer Rate 6 Month 1.020% 3/21/18 205 NZD 711,000 Morgan Stanley NZD Bank Bill Capital Services LLC Pay 3 Month 3.760% 2/7/25 (5,385) NZD 702,000 Morgan Stanley NZD Bank Bill Capital Services LLC Pay 3 Month 3.850% 1/13/25 (3,732) NZD 5,977,000 Goldman Sachs NZD Bank Bill International Pay 3 Month 3.090% 6/29/17 19,458 NZD (5,098,000) Goldman Sachs NZD Bank Bill International Receive 3 Month 3.450% 6/29/20 (55,127) NZD 1,408,000 Goldman Sachs NZD Bank Bill International Pay 3 Month 3.940% 6/29/25 29,196 SEK 3,310,000 Barclays Bank Plc Pay LIBOR SEK 3 Month 0.390% 10/28/16 4,566 SEK 5,040,000 Barclays Bank Plc Pay LIBOR SEK 3 Month 0.550% 9/18/16 9,056 SEK 4,800,000 Barclays Bank Plc Pay LIBOR SEK 3 Month 0.620% 8/20/16 5,630 SEK 4,800,000 Morgan Stanley Capital Services LLC Pay LIBOR SEK 3 Month 0.620% 8/13/16 5,388 The accompanying notes are an integral part of these financial statements. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 25 Schedule of Investments | 8/31/15 (continued) INTEREST RATE SWAP AGREEMENTS (continued) ----------------------------------------------------------------------------------------------------------------- Net Annual Unrealized Notional Pay/ Floating Fixed Expiration Appreciation Principal ($) Counterparty Receive Rate Rate Date (Depreciation) ----------------------------------------------------------------------------------------------------------------- SEK 4,800,000 Morgan Stanley Capital Services LLC Pay LIBOR SEK 3 Month 0.630% 8/14/16 $ 5,417 SEK 2,075,000 Barclays Bank Plc Pay LIBOR SEK 3 Month 0.760% 6/22/20 4,154 SEK 2,390,000 Goldman Sachs International Pay LIBOR SEK 3 Month 0.650% 7/16/20 2,956 SEK 4,900,000 Barclays Bank Plc Pay LIBOR SEK 3 Month 0.500% 8/11/20 738 SEK 2,252,000 Barclays Bank Plc Pay LIBOR SEK 3 Month 0.460% 8/21/20 (330) (410,000) Deutsche Bank Receive LIBOR USD 3 Month 0.640% 10/28/16 (690) (1,690,000) Deutsche Bank Receive LIBOR USD 3 Month 3.040% 11/28/22 (24,683) 3,150,000 Deutsche Bank Pay LIBOR USD 3 Month 1.810% 1/23/19 5,262 CAD (1,154,000) Goldman Sachs Canadian 3 Month International Receive Prime Lending Rate 1.270% 7/17/20 (7,437) CAD 606,000 Goldman Sachs Canadian 3 Month International Pay Prime Lending Rate 2.060% 7/17/25 7,104 CAD (1,154,000) Goldman Sachs Canadian 3 Month International Receive Prime Lending Rate 1.260% 7/17/20 (7,009) CAD 606,000 Goldman Sachs Canadian 3 Month International Receive Prime Lending Rate 2.060% 7/17/25 7,104 CAD 2,128,026 Credit Suisse Pay Canadian 3 Month Prime Lending Rate 0.680% 8/21/17 (676) CAD 2,128,026 Credit Suisse Pay Canadian 3 Month Prime Lending Rate 0.660% 8/21/17 (1,519) MYR 5,300,000 Goldman Sachs Malaysian Overnight International Pay Policy Rate 4.440% 7/8/25 (10,783) MYR (25,300,000) Goldman Sachs Malaysian Overnight International Receive Policy Rate 3.800% 7/8/17 31,289 1,800,000 Deutsche Bank Pay LIBOR USD 3 Month 1.590% 2/10/19 8,083 (1,015,000) Deutsche Bank Receive LIBOR USD 3 Month 1.599% 2/7/19 (11,031) (508,000) Deutsche Bank Receive LIBOR USD 3 Month 1.570% 3/3/19 (11,853) (350,000) Deutsche Bank Receive LIBOR USD 3 Month 1.750% 12/5/19 (5,020) (630,000) Deutsche Bank Receive LIBOR USD 3 Month 0.770% 9/18/16 (5,793) (500,000) Deutsche Bank Receive LIBOR USD 3 Month 1.710% 2/26/20 (3,931) (340,000) Deutsche Bank Receive LIBOR USD 3 Month 1.520% 11/12/17 (3,396) (371,500) Deutsche Bank Receive LIBOR USD 3 Month 1.420% 10/28/17 (3,221) (625,000) Deutsche Bank Receive LIBOR USD 3 Month 0.670% 8/13/16 (1,043) (625,000) Deutsche Bank Receive LIBOR USD 3 Month 0.670% 8/14/16 (590) (371,500) Deutsche Bank Receive LIBOR USD 3 Month 1.370% 10/23/17 (2,866) The accompanying notes are an integral part of these financial statements. 26 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 INTEREST RATE SWAP AGREEMENTS (continued) ---------------------------------------------------------------------------------------------------------------- Net Annual Unrealized Notional Pay/ Floating Fixed Expiration Appreciation Principal ($) Counterparty Receive Rate Rate Date (Depreciation) ---------------------------------------------------------------------------------------------------------------- (625,000) Deutsche Bank Receive LIBOR USD 3 Month 0.640% 8/20/16 $ (685) (1,630,000) Deutsche Bank Receive LIBOR USD 3 Month 2.340% 1/23/23 19,411 3,130,000 Deutsche Bank Pay LIBOR USD 3 Month 2.250% 11/28/18 36,998 (2,220,000) Deutsche Bank Receive LIBOR USD 3 Month 1.440% 2/6/20 6,291 (259,500) Deutsche Bank Receive LIBOR USD 3 Month 1.820% 6/19/20 (3,427) (330,000) Deutsche Bank Receive LIBOR USD 3 Month 1.770% 2/6/20 (3,841) (286,000) Deutsche Bank Receive LIBOR USD 3 Month 1.830% 7/16/20 (3,423) (574,000) Deutsche Bank Receive LIBOR USD 3 Month 1.750% 8/11/20 (3,835) (270,000) Deutsche Bank Receive LIBOR USD 3 Month 1.690% 8/21/20 (1,177) (100,000) Deutsche Bank Receive LIBOR USD 3 Month 2.540% 3/13/27 804 (1,000,000) Deutsche Bank Receive LIBOR USD 3 Month 1.270% 11/11/17 (5,121) (700,000) Deutsche Bank Receive LIBOR USD 3 Month 1.470% 2/25/18 (3,862) 530,000 Deutsche Bank Pay LIBOR USD 3 Month 2.220% 5/6/25 3,283 (680,000) Deutsche Bank Receive LIBOR USD 3 Month 2.730% 2/15/41 (1,859) 1,380,000 Deutsche Bank Pay LIBOR USD 3 Month 3.985% 7/9/23 84,352 ---------------------------------------------------------------------------------------------------------------- $ (63,191) ================================================================================================================ Principal amounts are denominated in U.S. Dollars unless otherwise noted: AUD Australian Dollar CAD Canadian Dollar EUR Euro GBP British Pound Sterling INR Indian Rupee JPY Japanese Yen KRW South Korean Won MYR Malaysian Ringgit NOK Norwegian Krone NZD New Zealand Dollar SEK Swedish Krone Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Level 1 -- quoted prices in active markets for identical securities. Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) See Notes to Financial Statements -- Note 1A. Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) See Notes to Financial Statements -- Note 1A. Generally, equity securities are categorized as Level 1, fixed income securities and senior loans as Level 2 and securities valued using fair value methods (other than prices supplied by independent pricing services or broker-dealers) as Level 3. See Notes to Financial Statements -- Note 1A. The accompanying notes are an integral part of these financial statements. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 27 Schedule of Investments | 8/31/15 (continued) The following is a summary of the inputs used as of August 31, 2015, in valuing the Fund's assets: ------------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ------------------------------------------------------------------------------------------- U.S. Government and Agency Obligations $ -- $ 13,382,144 $ -- $13,382,144 Foreign Government Bonds -- 6,713,875 -- 6,713,875 Currency Call Options Purchased -- 31,417 -- 31,417 Currency Put Options Purchased -- 12,593 -- 12,593 Interest Rate Swaptions Purchased -- 642,147 -- 642,147 ------------------------------------------------------------------------------------------- Total $ -- $ 20,782,176 $ -- $20,782,176 =========================================================================================== Other Financial Instruments Net unrealized appreciation on futures contracts $ 59,415 $ -- $ -- $ 59,415 Net unrealized appreciation on forward foreign currency contracts -- 151,803 -- 151,803 Net unrealized depreciation on forward foreign currency contracts -- (259,105) -- (259,105) Net unrealized appreciation on credit default swap contracts -- 8,970 -- 8,970 Net unrealized appreciation on inflation rate swaps -- 63,671 -- 63,671 Net unrealized depreciation on interest rate swaps -- (63,191) -- (63,191) Interest rate swaptions written -- (341,870) -- (341,870) Currency call options written -- (3,423) -- (3,423) ------------------------------------------------------------------------------------------- Total Other Financial Instruments $ 59,415 $ (443,145) $ -- $ (383,730) =========================================================================================== During the year ended August 31, 2015, there were no transfers between Levels 1, 2 and 3. The following is a summary of the fair valuation of certain Fund's assets and liabilities as of August 31, 2015. --------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total --------------------------------------------------------------------------------------- Assets: Futures collateral $ -- $ 314,342 $ -- $ 314,342 Foreign cash, at value (cost $184,883) -- 182,672 -- 182,672 Centrally cleared swap collateral -- 223,989 -- 223,989 Liabilities: Variation margin for centrally cleared swap contracts -- (26,799) -- (26,799) Variation margin for futures contracts (10,749) -- -- (10,749) Swap collateral -- (245,516) -- (245,516) --------------------------------------------------------------------------------------- Total $(10,749) $ 448,688 $ -- $ 437,939 ======================================================================================= The accompanying notes are an integral part of these financial statements. 28 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Statement of Assets and Liabilities | 8/31/15 ASSETS: Investment in securities, at value (cost $20,989,271) $20,782,176 Cash 410,747 Foreign currencies, at value (cost $184,883) 182,672 Futures collateral 314,342 Swap collateral 223,989 Receivables -- Investment securities sold 1,835,938 Fund shares sold 59 Interest 40,403 Swap contracts receivable 12,515 Futures receivable 12,477 Due from Pioneer Investment Management, Inc. 29,100 Swap contracts, premiums paid 11,806 Net unrealized appreciation on forward foreign currency contracts 151,803 Net unrealized appreciation on futures contracts 59,415 Net unrealized appreciation on swap contracts 9,450 Other assets 26,809 ------------------------------------------------------------------------------------- Total assets $24,103,701 ===================================================================================== LIABILITIES: Payables -- Investment securities purchased $ 2,247,906 Trustee fees 1,126 Swap collateral 245,516 Written options and written swaptions (premiums received $328,508) 345,293 Variation margin for futures contracts 10,749 Variation margin for centrally cleared swap contracts 26,799 Net unrealized depreciation on forward foreign currency contracts 259,105 Due to affiliates 12,910 Accrued expenses 106,006 ------------------------------------------------------------------------------------- Total liabilities $ 3,255,410 ===================================================================================== NET ASSETS: Paid-in capital $21,531,975 Undistributed net investment income 451,416 Accumulated net realized loss on investments, futures contracts, swap contracts, written options and foreign currency transactions (870,715) Net unrealized depreciation on investments (207,095) Net unrealized appreciation on futures contracts 59,415 Net unrealized appreciation on swap contracts 9,450 Net unrealized depreciation on written options and written swaptions (16,785) Net unrealized depreciation on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (109,370) ------------------------------------------------------------------------------------- Total net assets $20,848,291 ===================================================================================== NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $7,543,761/779,851 shares) $ 9.67 Class C (based on $6,809,863/707,353 shares) $ 9.63 Class K (based on $10,060/1,037 shares) $ 9.70 Class Y (based on $6,484,607/669,189 shares) $ 9.69 MAXIMUM OFFERING PRICE: Class A ($9.67 (divided by) 95.5%) $ 10.13 ===================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 29 Statement of Operations For the year ended 8/31/15 INVESTMENT INCOME: Interest $ 78,484 ------------------------------------------------------------------------------------- Total investment income $ 78,484 ------------------------------------------------------------------------------------- EXPENSES: Management fees $ 121,171 Distribution fees Class A 17,141 Class C 68,381 Transfer agent fees Class A 472 Class C 451 Class Y 286 Shareholder communication expense 1,731 Administrative reimbursements 23,734 Custodian fees 83,701 Registration fees 76,266 Professional fees 106,936 Printing expense 42,345 Fees and expenses of nonaffiliated Trustees 6,516 Pricing fees 60,671 Miscellaneous 25,432 ------------------------------------------------------------------------------------- Total expenses $ 635,234 Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (394,284) ------------------------------------------------------------------------------------- Net expenses $ 240,950 ------------------------------------------------------------------------------------- Net investment loss $ (162,466) ------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS, SWAP CONTRACTS, WRITTEN OPTIONS, WRITTEN SWAPTIONS, FUTURES CONTRACTS AND FOREIGN CURRENCY TRANSACTIONS Net realized gain (loss) on: Investments $ (360,395) Swap contracts (237,337) Futures contracts (334,329) Written options and written swaptions 71,346 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 1,306,790 $ 446,075 ------------------------------------------------------------------------------------- Change in net unrealized appreciation (depreciation) on: Investments $ (337,698) Swap contracts 34,783 Futures contracts 210,458 Written options and written swaptions (112,263) Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (379,312) $ (584,032) ------------------------------------------------------------------------------------- Net realized and unrealized loss on investments, swap contracts, written options, written swaptions, futures contracts and foreign currency transactions $ (137,957) ------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $ (300,423) ===================================================================================== The accompanying notes are an integral part of these financial statements. 30 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Statements of Changes in Net Assets -------------------------------------------------------------------------------------------- Year Ended 1/30/14 (a) 8/31/15 to 8/31/14 -------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment loss $ (162,466) $ (51,724) Net realized gain (loss) on investments, swap contracts, futures contracts, written options, written swaptions and foreign currency transactions 446,075 (524,241) Change in net unrealized appreciation (depreciation) on investments, swap contracts, futures contracts, written options, written swaptions and foreign currency transactions (584,032) 319,647 -------------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $ (300,423) $ (256,318) -------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.09 and $0.00 per share, respectively) $ (58,842) $ -- Class C ($0.02 and $0.00 per share, respectively) (13,546) -- Class K* ($0.00 and $0.00 per share, respectively) -- -- Class Y ($0.11 and $0.00 per share, respectively) (75,000) -- -------------------------------------------------------------------------------------------- Total distributions to shareowners $ (147,388) $ -- -------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS:(b) Net proceeds from sale of shares $ 2,868,119 $ 20,044,447 Reinvestment of distributions 1,055 -- Cost of shares repurchased (1,359,740) (1,461) -------------------------------------------------------------------------------------------- Net increase in net assets resulting from Fund share transactions $ 1,509,434 $ 20,042,986 -------------------------------------------------------------------------------------------- Net increase in net assets $ 1,061,623 $ 19,786,668 NET ASSETS: Beginning of year 19,786,668 -- -------------------------------------------------------------------------------------------- End of year $20,848,291 $ 19,786,668 -------------------------------------------------------------------------------------------- Undistributed net investment income (Accumulated net investment loss) $ 451,416 $ (120,897) ============================================================================================ (a) Class A, Class C and Class Y shares commenced operations on January 30, 2014. (b) At August 31, 2015 PIM owned 92.7% of the value of the outstanding shares of Pioneer Absolute Return Bond Fund. * Class K shares commenced operations on December 31, 2014. The accompanying notes are an integral part of these financial statements. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 31 Statements of Changes in Net Assets (continued) -------------------------------------------------------------------------------- Year Year Ended Ended 1/30/14* 1/30/14* 8/31/15 8/31/15 to 8/31/14 to 8/31/14 Shares Amount Shares Amount -------------------------------------------------------------------------------- Class A* Shares sold 232,901 $ 2,278,455 668,740 $ 6,687,114 Reinvestment of distributions 39 375 -- -- Less shares repurchased (121,682) (1,179,105) (147) (1,461) -------------------------------------------------------------------------------- Net increase 111,258 $ 1,099,725 668,593 $ 6,685,653 ================================================================================ Class C* Shares sold 56,774 $ 555,464 666,667 $ 6,666,667 Reinvestment of distributions 70 680 -- -- Less shares repurchased (16,158) (156,514) -- -- -------------------------------------------------------------------------------- Net increase 40,686 $ 399,630 666,667 $ 6,666,667 ================================================================================ Class K** Shares sold 1,037 $ 10,000 -- $ -- Reinvestment of distributions -- -- -- -- Less shares repurchased -- -- -- -- -------------------------------------------------------------------------------- Net increase 1,037 $ 10,000 -- $ -- ================================================================================ Class Y* Shares sold 2,522 $ 24,200 669,096 $ 6,690,666 Reinvestment of distributions -- -- -- -- Less shares repurchased (2,429) (24,121) -- -- -------------------------------------------------------------------------------- Net increase 93 $ 79 669,096 $ 6,690,666 ================================================================================ * Class A, Class C and Class Y shares commenced operations on January 30, 2014. ** Class K shares commenced operations on December 31, 2014. The accompanying notes are an integral part of these financial statements. 32 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Financial Highlights --------------------------------------------------------------------------------------- Year Ended 1/30/14 8/31/15 to 8/31/14 --------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 9.88 $ 10.00 --------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ (0.03) $ (0.02) Net realized and unrealized gain (loss) on investments (0.09) (0.10) --------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.12) $ (0.12) --------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.09) $ -- --------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.21) $ (0.12) --------------------------------------------------------------------------------------- Net asset value, end of period $ 9.67 $ 9.88 ======================================================================================= Total return* (1.24)% (1.20)%*** Ratio of net expenses to average net assets 1.03% 1.01%** Ratio of net investment income (loss) to average net assets (0.58)% (0.29)%** Portfolio turnover rate 99% 62%** Net assets, end of period (in thousands) $ 7,544 $ 6,606 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 2.98% 2.61%** Net investment income (loss) to average net assets (2.53)% (1.89)%** ======================================================================================= * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. *** Not annualized. The accompanying notes are an integral part of these financial statements. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 33 Financial Highlights (continued) --------------------------------------------------------------------------------------- Year Ended 1/30/14 8/31/15 to 8/31/14 --------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 9.84 $ 10.00 --------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ (0.13) $ (0.06) Net realized and unrealized gain (loss) on investments (0.06) (0.10) --------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.19) $ (0.16) --------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.02) $ -- --------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.21) (0.16) --------------------------------------------------------------------------------------- Net asset value, end of period $ 9.63 9.84 ======================================================================================= Total return* (1.94)% (1.60)%*** Ratio of net expenses to average net assets 1.78% 1.75%** Ratio of net investment income (loss) to average net assets (1.41)% (1.03)%** Portfolio turnover rate 99% 62%** Net assets, end of period (in thousands) $ 6,810 $ 6,559 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 3.73% 3.35%** Net investment income (loss) to average net assets (3.36)% (2.63)%** ======================================================================================= * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. *** Not annualized. The accompanying notes are an integral part of these financial statements. 34 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------ 12/31/14 to 8/31/15 ------------------------------------------------------------------------------ Class K Net asset value, beginning of period $ 9.64 ------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income (loss) $ (0.09) Net realized and unrealized gain (loss) on investments 0.15(a) ------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 0.06 ------------------------------------------------------------------------------ Distribution to shareowners: Net investment income $ -- ------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 0.06 ------------------------------------------------------------------------------ Net asset value, end of period $ 9.70 ============================================================================== Total return* 0.62%*** Ratio of net expenses to average net assets 0.75%** Ratio of net investment income (loss) to average net assets (1.34)%** Portfolio turnover rate 99% Net assets, end of period (in thousands) $ 10 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 2.70%** Net investment income (loss) to average net assets (3.29)%** ============================================================================== * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period. ** Annualized. *** Not annualized. (a) The amount shown for a share outstanding does not correspond with the aggregate loss on investments for the period due to the timing of sales and repurchases of shares in relation to fluctuating market values of the investments of the Fund. The accompanying notes are an integral part of these financial statements. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 35 Financial Highlights (continued) --------------------------------------------------------------------------------------- Year Ended 1/30/14 8/31/15 to 8/31/14 --------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 9.90 $ 10.00 --------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ (0.04) $ (0.00)(a) Net realized and unrealized gain (loss) on investments (0.06) (0.10) --------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.10) $ (0.10) --------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.11) $ -- --------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.21) $ (0.10) --------------------------------------------------------------------------------------- Net asset value, end of period $ 9.69 $ 9.90 ======================================================================================= Total return* (0.98)% (1.00)%*** Ratio of net expenses to average net assets 0.75% 0.75%** Ratio of net investment income (loss) to average net assets (0.39)% (0.03)%** Portfolio turnover rate 99% 62%** Net assets, end of period (in thousands) $ 6,485 $ 6,621 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 2.70% 2.36%** Net investment income (loss) (2.34)% (1.64)%** ======================================================================================= * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period. ** Annualized. *** Not annualized. (a) Amount rounds to less than $0.01 or $(0.01) per share. The accompanying notes are an integral part of these financial statements. 36 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Notes to Financial Statements | 8/31/15 1. Organization and Significant Accounting Policies Pioneer Absolute Return Bond Fund (the Fund) is one of five portfolios comprising Pioneer Series Trust V, a Delaware statutory trust. The Fund is registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The Fund's investment objective is to seek total return. The Fund offers four classes of shares designated as Class A, Class C, Class K and Class Y shares. Class A, Class C and Class Y shares commenced operations on January 30, 2014. Class K shares commenced operations on December 31, 2014. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different rates of class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends from net investment income earned by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per-share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per-share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Each share class has exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. There is no distribution plan for Class K or Class Y shares. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gains and losses on investments during the reporting period. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements: A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Fund is computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. Fixed income securities are valued at prices supplied by independent pricing services, Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 37 which consider such factors as market prices, market events, quotations from one or more brokers, Treasury spreads, yields, maturities and ratings. Valuations may be supplemented by dealers and other sources, as required. Equity securities that have traded on an exchange are valued at the last sale price on the principal exchange where they are traded. Equity securities that have not traded on the date of valuation, or securities for which sale prices are not available, generally are valued using the mean between the last bid and asked prices. Shares of money market mutual funds are valued at such funds' net asset value. Cash may include overnight time deposits at approved financial institutions. Trading in foreign securities is substantially completed each day at various times prior to the close of the NYSE. The values of such securities used in computing the net asset value of the Fund's shares are determined as of such times. Securities or loan interests for which independent pricing services are unable to supply prices or for which market prices and/or quotations are not readily available or are considered to be unreliable are valued by a fair valuation team comprised of certain personnel of Pioneer Investment Management, Inc. (PIM), the Fund's investment adviser, pursuant to procedures adopted by the Fund's Board of Trustees. PIM's fair valuation team uses fair value methods approved by the Valuation Committee of the Board of Trustees. PIM's fair valuation team is responsible for monitoring developments that may impact fair valued securities and for discussing and assessing fair values on an ongoing basis, and at least quarterly, with the Valuation Committee of the Board of Trustees. Inputs used when applying fair value methods to value a security may include credit ratings, the financial condition of the company, current market conditions and comparable securities. The Fund may use fair value methods if it is determined that a significant event has occurred after the close of the exchange or market on which the security trades and prior to the determination of the Fund's net asset value. Examples of a significant event might include political or economic news, corporate restructurings, natural disasters, terrorist activity or trading halts. Thus, the valuation of the Fund's securities may differ significantly from exchange prices and such differences could be material. At August 31, 2015, no securities were valued using fair value methods (other than securities valued using prices supplied by independent pricing services). B. Investment Income and Transactions Principal amounts of mortgage-backed securities are adjusted for monthly paydowns. Premiums and discounts related to certain mortgage-backed securities are amortized or accreted in proportion to the monthly 38 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 paydowns. All discounts/premiums on purchase prices of debt securities are accreted/amortized for financial reporting purposes over the life of the respective securities, and such accretion/amortization is included in interest income. Dividend income is recorded on the ex-dividend date except that certain dividends from foreign securities where the ex-dividend date may have passed are recorded as soon as the Fund becomes aware of the ex-dividend data in the exercise of reasonable diligence. Interest income is recorded on the accrual basis. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. C. Foreign Currency Translation The books and records of the Fund are maintained in U.S. dollars. Amounts denominated in foreign currencies are translated into U.S. dollars using current exchange rates. Net realized gains and losses on foreign currency transactions, if any, represent, among other things, the net realized gains and losses on foreign currency contracts, disposition of foreign currencies and the difference between the amount of income accrued and the U.S. dollars actually received. Further, the effects of changes in foreign currency exchange rates on investments are not segregated in the statement of operations from the effects of changes in the market price of those securities but are included with the net realized and unrealized gain or loss on investments. D. Futures Contracts The Fund may enter into futures transactions in order to attempt to hedge against changes in interest rates, securities prices and currency exchange rates or to seek to increase total return. Futures contracts are types of derivatives. All futures contracts entered into by the Fund are traded on a futures exchange. Upon entering into a futures contract, the Fund is required to deposit with a broker an amount of cash or securities equal to the minimum "initial margin" requirements of the associated futures exchange. The amount of cash deposited with the broker as collateral at August 31, 2015 was $314,342. Subsequent payments for futures contracts ("variation margin") are paid or received by the Fund, depending on the daily fluctuation in the value of the contracts, and are recorded by the Fund as unrealized appreciation or depreciation. When the contract is closed, the Fund realizes a gain or loss equal to the difference between the opening and closing value of the contract. The use of futures contracts involves, to varying degrees, elements of market, interest rate, currency exchange rate and counterparty risks, which may exceed the amounts recognized by the Fund. Changes in value of the Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 39 contracts may not directly correlate to changes in value of the underlying securities. The average value of contracts open during the year ended August 31, 2015 was $(6,871,174). At August 31, 2015, open futures contracts were as follows: ------------------------------------------------------------------------------------ Number of Unrealized Contracts Settlement Appreciation/ Type Long/(Short) Month Value (Depreciation) ------------------------------------------------------------------------------------ F/C Australia 10 yr Bond Future 15 9/15 $ 1,375,995 $ 27,166 F/C Euro Bond Future 8 9/15 1,375,605 (13,574) F/C Euro BUXL 30yr Bond Future (9) 9/15 (1,532,292) 25,519 F/C Euro OAT Future (13) 9/15 (2,156,802) 37,627 F/C Euro BTP Future (24) 9/15 (3,643,751) (14,973) F/C U.S. Ultra Bond (CBT) 7 12/15 1,108,844 (2,350) ------------------------------------------------------------------------------------ $(3,472,401) $ 59,415 ==================================================================================== E. Forward Foreign Currency Contracts The Fund may enter into forward foreign currency contracts (contracts) for the purchase or sale of a specific foreign currency at a fixed price on a future date. All contracts are marked to market daily at the applicable exchange rates, and any resulting unrealized appreciation or depreciation is recorded in the Fund's financial statements. The Fund records realized gains and losses at the time a contract is offset by entry into a closing transaction or extinguished by delivery of the currency. Risks may arise upon entering into these contracts from the potential inability of counterparties to meet the terms of the contract and from unanticipated movements in the value of foreign currencies relative to the U.S. dollar (see Note 5). F. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal income tax provision is required. As of August 31, 2015, the Fund did not accrue any interest or penalties with respect to uncertain tax positions, which, if applicable, would be recorded as an income tax expense in the Statement of Operations. Tax returns filed within the prior three years remain subject to examination by federal and state tax authorities. The amount and character of income and capital gain distributions to shareowners are determined in accordance with federal income tax rules, which may differ from U.S. generally accepted accounting principles. Distributions in excess of net investment income or net realized gains are temporary overdistributions for financial statement purposes resulting from 40 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 differences in the recognition or classification of income or distributions for financial statement and tax purposes. Capital accounts within the financial statements are adjusted for permanent book/tax differences to reflect tax character, but are not adjusted for temporary differences. At August 31, 2015, the Fund reclassified $882,167 to increase undistributed net investment income and $882,167 to increase accumulated net realized loss on investments, futures contracts, swap contracts, written options and foreign currency transactions to reflect permanent book/tax differences. These adjustments have no impact on net assets or the results of operations. At August 31, 2015, the Fund was permitted to carry forward indefinitely $347,935 of short-term losses and $490,531 of long-term losses under the Regulated Investment Company Modernization Act of 2010 without limitation. There were no distributions paid during the year ended August 31, 2014. The tax character of distributions during the year ended August 31, 2015 was as follows: --------------------------------------------------------------------------- 2015 --------------------------------------------------------------------------- Distributions paid from: Ordinary income $147,388 --------------------------------------------------------------------------- Total $147,388 =========================================================================== The following shows the components of distributable earnings (losses) on a federal income tax basis at August 31, 2015: --------------------------------------------------------------------------- 2015 --------------------------------------------------------------------------- Distributable earnings: Undistributed ordinary income $ 362,041 Capital loss carryforward (838,466) Unrealized depreciation (207,259) --------------------------------------------------------------------------- Total $(683,684) =========================================================================== The difference between book-basis and tax-basis net unrealized depreciation is attributable to the tax adjustments relating to credit default swaps and the mark to market of futures contracts and credit default swaps. G. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), earned $137 in underwriting commissions on the sale of Class A shares during the year ended August 31, 2015. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 41 H. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on its respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A and Class C shares of the Fund, respectively (see Note 4). Class K or Class Y shares do not pay distribution fees. All expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services are allocated among the classes of shares based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner and at the same time, except that net investment income dividends to Class A, Class C, Class K and Class Y shares can reflect different transfer agent and distribution expense rates. I. Risks Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates and economic and political conditions. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making the Fund more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. The Fund's prospectus contains unaudited information regarding the Fund's principal risks. Please refer to that document when considering the Fund's principal risks. J. Option Writing The Fund may write put and covered call options to seek to increase total return. When an option is written, the Fund receives a premium and becomes obligated to purchase or sell the underlying security at a fixed price upon the exercise of the option. When the Fund writes an option, an amount equal to the premium received by the Fund is recorded as a liability and is subsequently adjusted to the current value of the option written. Premiums received from writing options that expire unexercised are treated by the Fund on the expiration date as realized gains from investments. The difference between the premium and the amount paid on effecting a closing purchase transaction, including brokerage commissions, is also treated as a realized gain or, if the premium is less than the amount paid for the closing purchase transaction, as a realized loss. If a call option is exercised, the premium is added to the proceeds from the sale of the underlying security in determining 42 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 whether the Fund has realized a gain or loss. The Fund as writer of an option bears the market risk of an unfavorable change in the price of the security underlying the written option. The average value of written option contracts open during the year ended August 31, 2015 was $(9,773). Written option contracts outstanding at August 31, 2015 are listed in the schedule of investments. The Fund held two written options that were open at August 31, 2015. If the options were exercised at August 31, 2015, the maximum amount the Fund would have been required to pay was $3,339. Transactions in written options for the year ended August 31, 2015 are summarized as follows: --------------------------------------------------------------------------- Number of Premium Contracts Received --------------------------------------------------------------------------- Options open at beginning of period (980,000) $(11,362) Options opened (1,980,000) (66,987) Options exercised 200,000 7,360 Options closed -- -- Options expired 2,550,000 67,650 --------------------------------------------------------------------------- Options open at end of period (210,000) $ (3,339) =========================================================================== K. Purchased Options The Fund may purchase put and call options to seek increase total return. Purchased call and put options entitle the Fund to buy and sell a specified number of shares or units of a particular security, currency or index at a specified price at a specific date or within a specific period of time. Upon the purchase of a call or put option, the premium paid by the Fund is included in the Statement of Assets and Liabilities as an investment. All premiums are marked-to-market daily, and any unrealized gains or losses are recorded in the Fund's financial statements. As the purchaser of an index option, the Fund has the right to receive a cash payment equal to any depreciation in the value of the index below the strike price of the option (in the case of a put) or equal to any appreciation in the value of the index over the strike price of the option (in the case of a call) as of the valuation date of the option. Premiums paid for purchased calls and put options which have expired are treated as realized losses on investments in the Statement of Operations. Upon the exercise or closing of a purchased put option, the premium is offset against the proceeds on the sale of the underlying security or financial instrument in order to determine the realized gain or loss on investments. Upon the exercise or closing of a purchased call option, the premium is added to the cost of the security or financial instrument. The risk associated with purchasing options is limited to the premium originally paid. The average Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 43 value of purchased options open during the year ended August 31, 2015 was $88,134. Purchased option contracts outstanding at period end are listed within the Fund's schedule of investments. L. Written Interest Rate Swaptions The Fund may enter into interest rate swaptions to seek to manage exposure to fluctuations in interest rates or to seek to enhance yield. A swaption grants the right but not the obligation to enter into the underlying swap at a future specified date. When the Fund writes a swaption, the Fund receives a premium and becomes obligated to enter into a swap contract according to the terms of the underlying agreement. The premium received by the Fund is recorded as a liability and is subsequently adjusted to the current value of the written swaption. Premiums received from writing swaptions that expire unexercised are treated by the Fund on the expiration date as realized gains. The difference between the premium and the amount paid on effecting a closing purchase transaction, including brokerage commissions, is also treated as a realized gain or, if the premium is less than the amount paid for the closing purchase transaction, as a realized loss. If a written swaption is exercised, the cost basis of the swap is adjusted by the amount of premium received. The Fund as writer of a swaption bears the market risk of an unfavorable change in the price of the security underlying the written swaption. Open interest rate swaption contracts at August 31, 2015 are listed in the Schedule of Investments. The average value of written swaption contracts open during the year ended August 31, 2015 was $(150,446). The Fund held six interest rate swaptions that were open at August 31, 2015. If the swaptions were exercised at August 31, 2015, the maximum amount the Fund would have been required to pay was $325,169. Transactions in interest rate swaptions for the year ended August 31, 2015 are summarized as follows: --------------------------------------------------------------------------- Number of Premium Contracts Received --------------------------------------------------------------------------- Options open at beginning of period (7,600,000) $(200,002) Options opened (18,050,000) (505,081) Options exercised 11,450,000 377,228 Options closed -- -- Options expired 2,000,000 2,686 --------------------------------------------------------------------------- Options open at end of period (12,200,000) $(325,169) =========================================================================== 44 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 M. Purchased Interest Rate Swaptions The Fund may purchase put and call swaptions in order to attempt to hedge against changes in the value of portfolio securities or to seek to increase total return. Purchased call and put swaptions entitle the Fund to buy and sell a specified number of shares or units of a particular security, currency or index at a specified price at a specific date or within a specific period of time. Upon the purchase of a call or put swaption, the premium paid by the Fund is included in the Statement of Assets and Liabilities as an investment. All premiums are marked-to-market daily, and any unrealized gains or losses are recorded in the Fund's financial statements. As the purchaser of an index swaption, the Fund has the right to receive a cash payment equal to any depreciation in the value of the index below the strike price of the swaption (in the case of a put) or equal to any appreciation in the value of the index over the strike price of the swaption (in the case of a call) as of the valuation date of the swaption. Premiums paid for purchased calls and put swaptions which have expired are treated as realized losses on investments in the Statement of Operations. Upon the exercise or closing of a purchased put swaption, the premium is offset against the proceeds on the sale of the underlying security or financial instrument in order to determine the realized gain or loss on investments. Upon the exercise or closing of a purchased call swaption, the premium is added to the cost of the security or financial instrument. The risk associated with purchasing swaptions is limited to the premium originally paid. The average value of contracts open during the year ended August 31, 2015 was $375,891. Purchased swaptions open at period end are listed at the end of the Fund's Schedule of Investments. N. Credit Default Swap Agreements A credit default swap is a contract between a buyer of protection and a seller of protection against a pre-defined credit event. The Fund may sell or buy credit default swap contracts to seek to increase the Fund's income, or to attempt to hedge the risk of default on Fund securities. A credit default swap index is used to hedge risk or take a position on a basket of credit entities or indices. As a seller of protection, the Fund would be required to pay the notional (or other agreed-upon) value of the referenced debt obligation to the counterparty in the event of a default by a U.S. or foreign corporate issuer of a debt obligation, which would likely result in a loss to the Fund. In return, the Fund would receive from the counterparty a periodic stream of payments during the term of the contract provided that no event of default occurred. The maximum exposure of loss to the seller would be the notional value of the credit default swaps outstanding. If no default occurs, the Fund would keep the stream of payments and would have no payment obligation. The Fund may also buy credit default swap contracts in order to hedge against the risk of default of debt securities, in which case the Fund would function as the counterparty referenced above. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 45 When the Fund enters into a credit default swap contract, the protection buyer makes an upfront or periodic payment to the protection seller in exchange for the rights to receive a contingent payment. An upfront payment made by the Fund, as the protection buyer, is recorded as an asset in the Statement of Assets and Liabilities. Periodic payments received or paid by the Fund are recorded as realized gains or losses in the Statement of Operations. Credit default swap contracts are marked-to-market daily using valuations supplied by independent sources and the change in value, if any, is recorded as unrealized appreciation or depreciation in the Statement of Assets and Liabilities. Payments received or made as a result of a credit event or upon termination of the contract are recognized, net of the appropriate amount of the upfront payment, as realized gains or losses in the Statement of Operations. Certain swap contracts that are cleared through a central clearinghouse are referred to as centrally cleared swaps. All payments made or received by the Fund are pursuant to a centrally cleared swap contract with the central clearing party rather than the original counterparty. Upon entering into a centrally cleared swap contract, the Fund is required to make an initial margin deposit, either in cash or in securities. The daily change in value on open centrally cleared contracts is recorded as variation margin on centrally cleared swaps on the Statement of Assets and Liabilities. Credit default swap contracts involving the sale of protection may involve greater risks than if the Fund had invested in the referenced debt instrument directly. Credit default swap contracts are subject to general market risk, liquidity risk, counterparty risk and credit risk. If the Fund is a protection buyer and no credit event occurs, it will lose its investment. If the Fund is a protection seller and a credit event occurs, the value of the referenced debt instrument received by the Fund, together with the periodic payments received, may be less than the amount the Fund pays to the protection buyer, resulting in a loss to the Fund. Open credit default swap contracts at August 31, 2015 are listed in the Schedule of Investments. The average value of credit default swap contracts open during the year ended August 31, 2015 was $(22,665). O. Cross Currency Swap Contracts The Fund may enter into a cross currency swap contract to attempt to manage and/or gain exposure to fluctuations in interest and/or currency exchange rates. When entering into a cross currency swap contract, the Fund negotiates with the counterparty to exchange a periodic stream of payments (determined using fixed or floating rates) based on the notional amount of two different currencies. The notional amounts are typically determined based on exchange rates at the opening of the contract. 46 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Cross currency swap contracts are marked-to-market daily using valuations supplied by independent sources and the change in value, if any, is recorded as unrealized appreciation or depreciation in the Statement of Assets and Liabilities. Payments received or made under the contract or upon termination of the contract are recognized, net of the appropriate amount of any upfront payment, as realized gains or losses in the Statement of Operations. Cross currency swaps are subject to counterparty risk. There were no open cross currency swap contracts at August 31, 2015. The average value of cross currency swap contracts open during the year ended August 31, 2015 was $(48,167). P. Inflation Rate Swap Contracts The Fund may enter into inflation rate swap contracts to attempt to hedge against inflation. Pursuant to the inflation rate swap agreement, the Fund negotiates with a counterparty to exchange a periodic stream of payments, based on a benchmark inflation index. One cash flow stream will typically be a floating rate payment linked to the specified inflation index while the other is typically a fixed interest rate. Inflation rate swap contracts are marked-to-market daily using valuations supplied by independent sources and the change in value, if any, is recorded as unrealized appreciation or depreciation in the Statement of Assets and Liabilities. Inflation rate swaps are normally issued on a zero coupon basis where all payments compound during the life of the contract and are netted upon the termination or maturity of the contract. Final payments received or paid by the Fund are recorded as realized gains or losses in the Statement of Operations. Inflation rate swap contracts are subject to movements in interest rates. Open inflation rated swap contracts at August 31, 2015 are listed in the Schedule of Investments. The average value of inflation rate swap contracts open during the year ended August 31, 2015 was $34,685. Q. Interest Rate Swap Contracts The Fund may enter into interest rate swaps to attempt to hedge against interest rate fluctuations or to enhance its income. Pursuant to the interest rate swap agreement, the Fund negotiates with a counterparty to exchange a periodic stream of payments based on a benchmark interest rate. One cash flow stream will typically be a floating rate payment based upon the specified floating benchmark interest rate while the other is typically a fixed interest rate. Payment flows are usually netted against each other, with the difference being paid by one party to the other on a monthly basis. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 47 Periodic payments received or paid by the Fund are recorded as realized gains or losses in the Statement of Operations. Interest rate swap contracts are marked-to-market daily using valuations supplied by independent sources and the change in value, if any, is recorded as unrealized appreciation or depreciation in the Statement of Assets and Liabilities. Interest rate swap contracts are subject to counterparty risk and movements in interest rates. Open interest rate swap contracts at August 31, 2015 are listed in the Schedule of Investments. The average value of interest swap contracts open during the year ended August 31, 2015 was $(72,720). 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredit, manages the Fund's portfolio. Management fees are calculated daily at an annual rate of 0.60% of the average daily net assets of the Fund. PIM has contractually agreed to limit ordinary operating expenses to the extent required to reduce Fund expenses to 1.15%, 1.90%, 0.75% and 0.75% of the average daily net assets attributable to Class A, Class C, Class K and Class Y shares, respectively. These expense limitations are in effect through January 1, 2017. Fees waived and expenses reimbursed during the year ended August 31, 2015 are reflected on the Statement of Operations. Fees and expenses of other investment companies in which the Fund may invest are not included in the expense limitations noted above. There can be no assurance that PIM will extend the expense limitation agreement for a class of shares beyond the date referred to above. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund as administrative reimbursements. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $11,673 in management fees, administrative costs and certain other reimbursements payable to PIM at August 31, 2015. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimburses PIMSS for out-of-pocket expenses incurred by PIMSS related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the year ended August 31, 2015, such out-of-pocket expenses by class of shares were as follows: 48 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 -------------------------------------------------------------------------------- Shareholder Communications: -------------------------------------------------------------------------------- Class A $ 718 Class C 1,010 Class Y 3 -------------------------------------------------------------------------------- Total $1,731 ================================================================================ Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $285 in transfer agent fees and out-of-pocket reimbursements payable from PIMSS at August 31, 2015. 4. Distribution Plan The Fund has adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A and Class C shares. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Pursuant to the Plan, the Fund also pays PFD 1.00% of the average daily net assets attributable to Class C shares. The fee for Class C shares consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class C shares. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $952 in distribution fees payable to PFD at August 31, 2015. In addition, redemptions of each class of shares (except Class K or Class Y shares) may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within 12 months of purchase. Redemptions of Class C shares within 12 months of purchase are subject to a CDSC of 1.00%, based on the lower of cost or market value of shares being redeemed. Shares purchased as part of an exchange remain subject to any CDSC that applied to the original purchase of those shares. There is no CDSC for Class K or Class Y shares. Proceeds from the CDSCs are paid to PFD. For the year ended August 31, 2015, no CDSCs were paid to PFD. 5. Forward Foreign Currency Contracts At August 31, 2015, the Fund had entered into various forward foreign currency contracts that obligate the Fund to deliver or take delivery of currencies at specified future maturity dates. Alternatively, prior to the settlement date of a forward foreign currency contract, the Fund may close out such contract by entering into an offsetting contract. The average value of forward foreign currency contracts open during the year ended August 31, 2015 was $(5,840,675). Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 49 Open forward foreign currency contracts at August 31, 2015 were as follows: ------------------------------------------------------------------------------------------------------------ Net Currency Quantity Currency Quantity Settlement Unrealized Purchased Purchased Sold Sold Counterparty Date Appreciation ------------------------------------------------------------------------------------------------------------ USD 120,000 INR (Indian 7,788,000 Barclays Plc 9/22/15 $ 3,074 Rupee) USD 760,000 CNY (Chinese 4,873,310 Morgan 3/7/16 5,667 Yuan Renminbi) Stanley Co. EUR (Euro) 260,000 AUD (Austrialian 396,570 Morgan 10/16/15 10,439 Dollar) Stanley Co. GBP (British 180,000 AUD (Austrialian 374,264 Credit Suisse 10/16/15 10,292 Pound Sterling) Dollar) CAD (Canadian 200,000 MXN (Mexican 2,517,394 Credit Suisse 10/16/15 1,663 Dollar) Dollar) JP (Japanese Yen) 62,251,704 USD 502,000 Morgan 10/16/15 12,141 Stanley Co. JP (Japanese Yen) 58,061,094 USD 470,746 Credit Suisse 10/16/15 8,785 USD 290,000 CAD (Canadian 373,003 Morgan 10/16/15 6,864 Dollar) Stanley Co. EUR (Euro) 350,000 USD 389,327 Morgan 10/16/15 4,060 Stanley Co. GBP (British 100,000 CHF (Swiss Franc) 146,439 Credit Suisse 10/16/15 1,639 Pound Sterling) USD 628,996 NOK (Norwegian 5,095,000 Credit Suisse 10/16/15 14,093 Krone) USD 119,669 NZD (New 180,000 Credit Suisse 10/16/15 5,973 Zealand Dollar) USD 408,155 ZAR (South 5,278,548 Morgan 10/16/15 13,092 African Rand) Stanley Co. USD 174,349 AUD (Austrialian 233,290 Credit Suisse 10/16/15 8,579 Dollar) SEK (Swedish 540,411 NOK (Norwegian 520,000 Credit Suisse 10/16/15 1,335 Krona) Krone) USD 150,000 CAD (Canadian 194,292 Credit Suisse 10/16/15 2,519 Dollar) NZD (New 226,672 AUD (Austrialian 200,000 Morgan 10/16/15 1,062 Zealand Dollar) Dollar) Stanley Co. EUR (Euro) 213,096 GBP (British 149,228 Credit Suisse 10/16/15 10,504 Pound Sterling) GBP (British 140,000 NZD (New 336,917 Credit Suisse 10/16/15 2,035 Pound Sterling) Zealand Dollar) EUR (Euro) 200,000 HUN (Hungarian 62,155,831 Credit Suisse 10/16/15 2,308 Forint) PLN (Polish Zloty) 539,418 USD 140,000 Morgan 10/16/15 2,812 Stanley Co. USD 150,000 MXN (Mexican 2,470,079 Morgan 10/16/15 2,671 Dollar) Stanley Co. USD 190,939 EUR (Euro) 165,000 Credit Suisse 10/16/15 5,484 EUR (Euro) 250,000 USD 275,811 Credit Suisse 10/16/15 5,180 EUR (Euro) 220,000 SGD (Singapore 344,346 Credit Suisse 10/16/15 3,507 Dollar) USD 164,374 AUD (Austrialian 230,000 Morgan 10/16/15 942 Dollar) Stanley Co. USD 277,281 GBP (British 180,000 Credit Suisse 10/16/15 1,047 Pound Sterling) USD 140,000 INR (Indian 9,221,520 Morgan 9/21/15 1,523 Rupee) Stanley Co. USD 140,000 KRW (South 165,413,500 Morgan 3/2/16 582 Korean Won) Stanley Co. 50 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 ----------------------------------------------------------------------------------------------------------- Net Currency Quantity Currency Quantity Settlement Unrealized Purchased Purchased Sold Sold Counterparty Date Appreciation ----------------------------------------------------------------------------------------------------------- CAD (Canadian 176,981 NZD (New 210,000 Morgan 10/16/15 $ 1,695 Dollar) Zealand Dollar) Stanley Co. USD 100,000 TWD (Taiwan 3,238,430 Morgan 12/1/15 236 Dollar) Stanley Co. ----------------------------------------------------------------------------------------------------------- $ 151,803 =========================================================================================================== ----------------------------------------------------------------------------------------------------------- Net Currency Quantity Currency Quantity Settlement Unrealized Purchased Purchased Sold Sold Counterparty Date Depreciation ----------------------------------------------------------------------------------------------------------- INR (Indian 7,780,800 USD 120,000 Credit Suisse 9/22/15 $ (3,183) Rupee) CNY (Chinese 2,364,360 USD 380,000 Barclays Plc 3/7/16 (14,024) Yuan Renminbi) CNY (Chinese 2,363,220 USD 380,000 Credit Suisse 3/7/16 (14,200) Yuan Renminbi) INR (Indian 9,135,000 USD 140,000 Barclays Plc 9/21/15 (2,823) Rupee) MXN (Mexican 2,512,428 CAD (Canadian 200,000 Morgan 10/16/15 (1,960) Dollar) Dollar) Stanley Co. HUN (Hungarian 62,574,751 EUR (Euro) 200,000 Morgan 10/16/15 (808) Forint) Stanley Co. AUD (Austrialian 310,156 EUR (Euro) 200,000 Credit Suisse 10/16/15 (4,404) Dollar) JP (Japanese Yen) 36,637,677 EUR (Euro) 270,000 Credit Suisse 10/16/15 (877) GBP (British 85,337 EUR (Euro) 120,000 Morgan 10/16/15 (3,914) Pound Sterling) Stanley Co. CHF (Swiss Franc) 104,794 USD 111,273 Credit Suisse 10/16/15 (2,625) USD 442,000 JPY (Japanese 53,899,421 Morgan 10/16/15 (3,159) Yen) Stanley Co. USD 1,236,509 JPY (Japanese 151,955,472 Credit Suisse 10/16/15 (18,502) Yen) CAD (Canadian 567,352 USD 440,000 Morgan 10/16/15 (9,339) Dollar) Stanley Co. USD 42,533 SEK (Swedish 360,000 Credit Suisse 10/16/15 (163) Krona) USD 6,125,082 EUR (Euro) 5,543,142 Morgan 10/16/15 (105,212) Stanley Co. NOK (Norwegian 1,680,000 SEK (Swedish 1,739,101 Morgan 10/16/15 (3,500) Krone) Krona) Stanley Co. NZD (New 180,000 USD 116,958 Credit Suisse 10/16/15 (3,261) Zealand Dollar) ZAR (South 3,910,814 USD 310,000 Morgan 10/16/15 (17,302) African Rand) Stanley Co. AUD (Austrialian 379,466 GBP (British 180,000 Morgan 10/16/15 (6,595) Dollar) Pound Sterling) Stanley Co. GBP (British 92,582 EUR (Euro) 130,000 Credit Suisse 10/16/15 (4,035) Pound Sterling) NZD (New 328,082 GBP (British 140,000 Credit Suisse 10/16/15 (7,616) Zealand Dollar) Pound Sterling) PLN (Polish Zloty) 263,279 USD 70,000 Credit Suisse 10/16/15 (296) USD 70,000 PLN (Polish Zloty) 264,677 Credit Suisse 10/16/15 (74) USD 140,000 PLN (Polish Zloty) 531,049 Morgan 10/16/15 (597) Stanley Co. MXN (Mexican 2,432,939 USD 150,000 Morgan 10/16/15 (4,887) Dollar) Stanley Co. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 51 ------------------------------------------------------------------------------------------------------------- Net Currency Quantity Currency Quantity Settlement Unrealized Purchased Purchased Sold Sold Counterparty Date Depreciation ------------------------------------------------------------------------------------------------------------- SGD (Singapore 341,590 EUR (Euro) 220,000 Credit Suisse 10/16/15 $ (5,458) Dollar) AUD (Austrialian 170,000 USD 124,712 Morgan 10/16/15 (3,915) Dollar) Stanley Co. GBP (British 90,000 USD 140,604 Morgan 10/16/15 (2,487) Pound Sterling) Stanley Co. NOK (Norwegian 2,500,000 USD 302,462 Morgan 10/16/15 (743) Krone) Stanley Co. NZD (New 210,000 CAD (Canadian 181,449 Credit Suisse 10/16/15 (5,087) Zealand Dollar) Dollar) GBP (British 90,000 USD 141,162 Credit Suisse 10/16/15 (3,045) Pound Sterling) USD 82,938 CNY (Chinese 543,037 Goldman 2/24/16 (1,167) Yuan Renminbi) Sachs & Co. USD 57,062 CNY (Chinese 373,798 Morgan 2/24/16 (832) Yuan Renminbi) Stanley Co. USD 140,000 CNY (Chinese 923,650 Barclays Plc 2/29/16 (3,015) Yuan Renminbi) ------------------------------------------------------------------------------------------------------------- $(259,105) ============================================================================================================= 6. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS which may result in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the year ended August 31, 2015, the Fund's expenses were not reduced under such arrangements. 7. Assets and Liabilities Offsetting The Fund has entered into an International Swaps and Derivatives Association, Inc. Master Agreement ("ISDA Master Agreement") or similar agreement with substantially all its derivative counterparties. An ISDA Master Agreement is a bilateral agreement between the Fund and a counterparty that governs the trading of certain OTC derivatives and typically contains, among other things, close-out and set-off provisions which apply upon the occurrence of event of a default and/or termination event as defined under the relevant ISDA Master Agreement. The ISDA Master Agreement may also give a party the right to terminate all transactions traded under such agreement if, among other things, there is deterioration in the credit quality of the other party. Upon an event of default or a termination of the ISDA Master Agreement, the non-defaulting party has the right to close out all transactions under such agreement and to net amounts owed under each transaction to determine one net amount payable by one party to the other. The right to close out and net payments across all transactions under the ISDA Master Agreement could result in a reduction of the Fund's credit risk to its counterparty equal to any amounts payable by the Fund under the applicable transactions, if any. However, the 52 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Fund's right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific ISDA counterparty is subject. The collateral requirements for derivatives transactions under an ISDA Master Agreement are governed by a credit support annex to the ISDA Master Agreement. Collateral requirements are generally determined at the close of business each day and are typically based on changes in market values for each transaction under an ISDA Master Agreement and netted into one amount for such agreement. Generally, the amount of collateral due from or to a counterparty is subject to threshold (a "minimum transfer amount") before a transfer is required, which may vary by counterparty. Collateral pledged for the benefit of the Fund and/or counterparty is held in segregated accounts by the Fund's custodian and cannot be sold, re-pledged, assigned or otherwise used while pledged. Cash that has been segregated to cover the Fund's collateral obligations, if any, will be reported separately in the Statement of Assets and Liabilities as "Futures collateral", "Swap Collateral" or "Deposit with broker." Securities pledged by the Fund as collateral, if any, are identified as such in the Schedule of Investments. Financial instruments subject to an enforceable master netting agreement such as an ISDA Master Agreement have been offset on the Statement of Assets and Liabilities. The following charts show gross assets and liabilities of the Fund as of August 31, 2015. ---------------------------------------------------------------------------------------------- Derivative Assets Subject to Derivatives Non-Cash Cash Net Amount Master Netting Available Collateral Collateral of Derivative Counterparty Agreement for Offset Received (a) Received (a) Assets (b) ---------------------------------------------------------------------------------------------- Barclays Bank Plc $ 31,770 $ (20,791) $ -- $ -- $10,979 Credit Suisse International 150,609 (75,263) -- -- 75,346 Goldman Sachs International 141,035 (141,035) -- -- -- Deutsche Bank 501,752 (501,752) -- -- -- Morgan Stanley Capital Services LLC 136,165 (136,165) -- -- -- ---------------------------------------------------------------------------------------------- $961,331 $ (875,006) $ -- $ -- $86,325 ============================================================================================== Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 53 ---------------------------------------------------------------------------------------------- Derivative Liabilities Subject to Derivatives Non-Cash Cash Net Amount Master Netting Available Collateral Collateral of Derivative Counterparty Agreement for Offset Pledged (a) Pledged (a) Assets (c) ---------------------------------------------------------------------------------------------- Barclays Bank Plc $ (20,791) $ 20,791 $ -- $ -- $ -- Credit Suisse International (75,263) 75,263 -- -- -- Goldman Sachs International (455,752) 141,035 -- -- (314,717) Deutsche Bank (599,151) 501,752 97,399 -- -- Morgan Stanley Capital Services LLC (261,576) 136,165 -- -- (125,411) ---------------------------------------------------------------------------------------------- $ (1,412,533) $875,006 $ 97,399 $ -- $ (440,128) ============================================================================================== (a) The amount presented here may be less than the total amount of collateral received/pledged as the net amount of derivative assets and liabilities cannot be less than $0. (b) Represents the net amount due from the counterparty in the event of default. (c) Represents the net amount payable to the counterparty in the event of default. 8. Additional Disclosures about Derivative Instruments and Hedging Activities: Values of derivative instruments as of August 31, 2015 were as follows: ----------------------------------------------------------------------------------------------------- Derivatives Not Accounted for as Asset Derivatives Liabilities Derivatives Hedging Instruments -------------------------------------------------------------------------- Under Accounting Statement of Assets Statement of Assets Standards Codification and Liabilities and Liabilities (ASC) 815 Location Value Location Value ----------------------------------------------------------------------------------------------------- Forward foreign Net unrealized Net unrealized currency contracts appreciation on depreciation on forward foreign forward foreign currency contracts $151,803 currency contracts $259,105 Swap contracts Net unrealized Net unrealized appreciation on depreciation on swap contracts 9,450 swap contracts -- Futures contracts Net unrealized Net unrealized appreciation on depreciation on futures contracts 59,415 futures contracts -- Written options and Written options Written options written swaptions and swaptions -- and swaptions 345,293 ----------------------------------------------------------------------------------------------------- Total $220,668 $604,398 ===================================================================================================== 54 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 The effect of derivative instruments on the Statement of Operations for the year ended August 31, 2015 was as follows: ----------------------------------------------------------------------------------------------- Change in Derivatives Realized Unrealized Not Accounted Gain or Appreciation or for as Hedging (Loss) on (Depreciation) Instruments Under Location of Gain or (Loss) Derivatives on Derivatives Accounting Standards on Derivatives Recognized Recognized Recognized Codification (ASC) 815 in Income in Income in Income ----------------------------------------------------------------------------------------------- Forward foreign Net realized gain (loss) on currency contracts forward foreign currency contracts and other assets and liabilities denominated in foreign currencies $ 902,880 Forward foreign Change in unrealized appreciation currency contracts (depreciation) on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies $(312,480) Futures contracts Net realized gain (loss) on futures contracts $(334,329) Futures contracts Change in net unrealized appreciation (depreciation) on futures contracts $ 210,458 Swap contracts Net realized gain (loss) on swap contracts $(237,337) Swap contracts Change in net unrealized appreciation (depreciation) on swap contracts $ 34,783 Written options Net realized gain (loss) on and written written options and $ 71,346 swaptions written swaptions Written options Change in net unrealized and written appreciation (depreciation) on swaptions written options and written swaptions $(112,263) Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 55 Report of Independent Registered Public Accounting Firm To the Board of Trustees of Pioneer Series Trust V and the Shareowners of Pioneer Absolute Bond Fund: -------------------------------------------------------------------------------- We have audited the accompanying statement of assets and liabilities of Pioneer Absolute Bond Fund, one of the portfolios constituting Pioneer Series Trust V, including the schedule of investments, as of August 31, 2015, and the related statement of operations for the year then ended, and the statements of changes in net assets and the financial highlights for the year then ended, and for the period from January 30, 2014, (commencement of operations) through August 31, 2014. These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of August 31, 2015, by correspondence with the custodian and brokers and agent banks; where replies were not received from brokers and agent banks, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Pioneer Absolute Bond Fund as of August 31, 2015, the results of its operations for the year then ended, and the changes in its net assets, and the financial highlights for the year then ended and for the period from January 30, 2014, (commencement of operations) through August 31, 2014, in conformity with accounting principles generally accepted in the United States of America. /s/ Deloitte & Touch LLP Boston, Massachusetts October 28, 2015 56 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Additional Information (unaudited) PIM, the Fund's investment adviser, is currently an indirect, wholly-owned subsidiary of UniCredit. On April 23, 2015, UniCredit announced that it signed a preliminary and exclusive agreement with Banco Santander and affiliates of Warburg Pincus and General Atlantic (the "Private Equity Firms") with respect to Pioneer Investments ("Pioneer") and Santander Asset Management ("SAM") (the "Transaction"). The Transaction, as described in the UniCredit announcement, will entail the establishment of a holding company, with the name Pioneer Investments, to be owned by UniCredit (50%) and the Private Equity Firms (50% between them). The holding company will control Pioneer's U.S. operations, including the Adviser. The holding company also will own 66.7% of Pioneer's and SAM's combined operations outside the U.S., while Banco Santander will own directly the remaining 33.3% stake. The completion of the Transaction is subject to the signing of a definitive agreement, as well as certain regulatory and corporate approvals, and other conditions. Under the Investment Company Act of 1940, completion of the Transaction will cause the Fund's investment advisory agreement with the Adviser to terminate. In connection with the Transaction, the Fund's Board of Trustees will be asked to approve a new investment advisory agreement for the Fund. If approved by the Board, the Fund's new investment advisory agreement will be submitted to the shareholders of the Fund for their approval. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 57 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Custodian and Sub-Administrator Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Deloitte & Touche LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Morgan, Lewis & Bockius LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at us.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at www.sec.gov. Trustees and Officers The Fund's Trustees and officers are listed below, together with their principal occupations during at least the past five years. Trustees who are interested persons of the Fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the Fund are referred to as Independent Trustees. Each of the Trustees serves as a Trustee of each of the 51 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the Fund is 60 State Street, Boston, Massachusetts 02109. The Statement of Additional Information of the Fund includes additional information about the Trustees and is available, without charge, upon request, by calling 1-800-225-6292. 58 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Independent Trustees ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Thomas J. Perna (64) Trustee since 2013. Private investor (2004-2008 and Director, Broadridge Chairman of the Board Serves until a successor 2013-present); Chairman (2008-2013) and Financial Solutions, Inc. and Trustee trustee is elected or earlier Chief Executive Officer (2008-2012), (investor communications retirement or removal. Quadriserv, Inc. (technology products for and securities processing securities lending industry); and Senior provider for financial Executive Vice President, The Bank of New services industry) (2009- York (financial and securities services) present); Director, (1986-2004) Quadriserv, Inc. (2005-2013); and Commissioner, New Jersey State Civil Service Commission (2011-present) ------------------------------------------------------------------------------------------------------------------------------------ David R. Bock (71) Trustee since 2013. Managing Partner, Federal City Capital Director of New York Trustee Serves until a successor Advisors (corporate advisory services Mortgage Trust trustee is elected or earlier company) (1997-2004 and 2008-present); (publicly-traded mortgage retirement or removal. Interim Chief Executive Officer, Oxford REIT) (2004-2009, Analytica, Inc. (privately-held research 2012-present); Director and consulting company) (2010); Executive of The Swiss Helvetia Vice President and Chief Financial Fund, Inc. (closed-end Officer, I-trax, Inc. (publicly traded fund) (2010-present); health care services company) Director of Oxford (2004-2007); and Executive Vice President Analytica, Inc. and Chief Financial Officer, Pedestal (2008-present); and Inc. (internet-based mortgage trading Director of Enterprise company) (2000-2002); Private consultant Community Investment, (1995-1997), Managing Director, Lehman Inc. (privately-held Brothers (investment banking firm) affordable housing (1992-1995); and Executive, The World finance company) Bank (1979-1992) (1985-2010) ------------------------------------------------------------------------------------------------------------------------------------ Benjamin M. Friedman (71) Trustee since 2013. William Joseph Maier Professor of Trustee, Mellon Trustee Serves until a successor Political Economy, Harvard University Institutional Funds trustee is elected or earlier (1972-present) Investment Trust and retirement or removal. Mellon Institutional Funds Master Portfolio (oversaw 17 portfolios in fund complex) (1989-2008) ------------------------------------------------------------------------------------------------------------------------------------ Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 59 Independent Trustees (continued) ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Margaret B.W. Graham (68) Trustee since 2013. Founding Director, Vice President and None Trustee Serves until a successor Corporate Secretary, The Winthrop Group, trustee is elected or earlier Inc. (consulting firm) (1982-present); retirement or removal. Desautels Faculty of Management, McGill University (1999-present); and Manager of Research Operations and Organizational Learning, Xerox PARC, Xerox's advance research center (1990-1994) ------------------------------------------------------------------------------------------------------------------------------------ Marguerite A. Piret (67) Trustee since 2013. President and Chief Executive Officer, Director of New America Trustee Serves until a successor Newbury, Piret & Company, Inc. High Income Fund, Inc. trustee is elected or earlier (investment banking firm) (1981-present) (closed-end investment retirement or removal. company) (2004-present); and Member, Board of Governors, Investment Company Institute (2000-2006) ------------------------------------------------------------------------------------------------------------------------------------ Fred J. Ricciardi (68) Trustee since 2014. Consultant (investment company services) None Trustee Serves until a successor (2012-present); Executive Vice President, trustee is elected or earlier BNY Mellon (financial and investment retirement or removal. company services) (1969-2012); Director, BNY International Financing Corp. (financial services) (2002-2012); and Director, Mellon Overseas Investment Corp. (financial services) (2009-2012) ------------------------------------------------------------------------------------------------------------------------------------ 60 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Interested Trustee ------------------------------------------------------------------------------------------------------------------------------------ Interested Trustee Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Kenneth J. Taubes (57)* Trustee since 2014. Director and Executive Vice President None Trustee Serves until a successor (since 2008) and Chief Investment trustee is elected or earlier Officer, U.S. (since 2010) of PIM-USA; retirement or removal. Executive Vice President of Pioneer (since 2008); Executive Vice President of Pioneer Institutional Asset Management, Inc. (since 2009); and Portfolio Manager of Pioneer (since 1999) ------------------------------------------------------------------------------------------------------------------------------------ * Mr. Taubes is an Interested Trustee because he is an officer of the Fund's investment adviser and certain of its affiliates. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 61 Advisory Trustee ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Lorraine Monchak (59)** Advisory Trustee since 2014. Chief Investment Officer, 1199 SEIU Funds None Advisory Trustee (healthcare workers union pension funds) (2001-present); Vice President-International Investments Group, American International Group, Inc. (insurance company) (1993-2001); Vice President Corporate Finance and Treasury Group, Citibank, N.A.(1980-1986 and 1990- 1993); Vice President-Asset/Liability Management Group, Federal Farm Funding Corporation (government-sponsored issuer of debt securities) (1988-1990); Mortgage Strategies Group, Shearson Lehman Hutton, Inc. (investment bank) (1987-1988); and Mortgage Strategies Group, Drexel Burnham Lambert, Ltd. (investment bank) (1986-1987) ------------------------------------------------------------------------------------------------------------------------------------ ** Ms. Monchak is a non-voting advisory trustee. 62 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 Fund Officers ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Lisa M. Jones (53) Since 2014. Serves at the Chair, Director, CEO and President of None President and discretion of the Board. Pioneer Investment Management-USA (since Chief Executive Officer September 2014); Chair, Director, CEO and President of Pioneer Investment Management, Inc. (since September 2014); Chair, Director, CEO and President of Pioneer Funds Distributor, Inc. (since September 2014); Chair, Director, CEO and President of Pioneer Institutional Asset Management, Inc. (since September 2014); and Chair, Director, and CEO of Pioneer Investment Management Shareholder Services, Inc. (since September 2014); Managing Director, Morgan Stanley Investment Management (2010-2013); and Director of Institutional Business, CEO of International, Eaton Vance Management (2005-2010) ------------------------------------------------------------------------------------------------------------------------------------ Christopher J. Kelley (50) Since 2013. Serves at the Vice President and Associate General None Secretary and Chief discretion of the Board. Counsel of Pioneer since January 2008; Legal Officer Secretary and Chief Legal Officer of all of the Pioneer Funds since June 2010; Assistant Secretary of all of the Pioneer Funds from September 2003 to May 2010; and Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 ------------------------------------------------------------------------------------------------------------------------------------ Carol B. Hannigan (54) Since 2013. Serves at the Fund Governance Director of Pioneer since None Assistant Secretary discretion of the Board. December 2006 and Assistant Secretary of all the Pioneer Funds since June 2010; Manager-Fund Governance of Pioneer from December 2003 to November 2006; and Senior Paralegal of Pioneer from January 2000 to November 2003 ------------------------------------------------------------------------------------------------------------------------------------ Thomas Reyes (52) Since 2013. Serves at the Senior Counsel of Pioneer since May 2013 None Assistant Secretary discretion of the Board. and Assistant Secretary of all the Pioneer Funds since June 2010; and Counsel of Pioneer from June 2007 to May 2013 ------------------------------------------------------------------------------------------------------------------------------------ Mark E. Bradley (55) Since 2013. Serves at the Vice President-Fund Treasury of Pioneer; None Treasurer and Chief discretion of the Board. Treasurer of all of the Pioneer Funds Financial since March 2008; Deputy Treasurer of and Accounting Officer Pioneer from March 2004 to February 2008; and Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008 ------------------------------------------------------------------------------------------------------------------------------------ Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 63 Fund Officers (continued) ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Luis I. Presutti (50) Since 2013. Serves at the Director-Fund Treasury of Pioneer; and None Assistant Treasurer discretion of the Board. Assistant Treasurer of all of the Pioneer Funds ------------------------------------------------------------------------------------------------------------------------------------ Gary Sullivan (57) Since 2013. Serves at the Fund Accounting Manager-Fund Treasury of None Assistant Treasurer discretion of the Board. Pioneer; and Assistant Treasurer of all of the Pioneer Funds ------------------------------------------------------------------------------------------------------------------------------------ David F. Johnson (35) Since 2013. Serves at the Fund Administration Manager-Fund Treasury None Assistant Treasurer discretion of the Board. of Pioneer since November 2008; Assistant Treasurer of all of the Pioneer Funds since January 2009; and Client Service Manager-Institutional Investor Services at State Street Bank from March 2003 to March 2007 ------------------------------------------------------------------------------------------------------------------------------------ Jean M. Bradley (62) Since 2013. Serves at the Chief Compliance Officer of Pioneer and None Chief Compliance Officer discretion of the Board. of all the Pioneer Funds since March 2010; Chief Compliance Officer of Pioneer Institutional Asset Management, Inc. since January 2012; Chief Compliance Officer of Vanderbilt Capital Advisors, LLC since July 2012: Director of Adviser and Portfolio Compliance at Pioneer since October 2005; and Senior Compliance Officer for Columbia Management Advisers, Inc. from October 2003 to October 2005 ------------------------------------------------------------------------------------------------------------------------------------ Kelly O'Donnell (44) Since 2013. Serves at the Director-Transfer Agency Compliance of None Anti-Money Laundering discretion of the Board. Pioneer and Anti-Money Laundering Officer Officer of all the Pioneer Funds since 2006 ------------------------------------------------------------------------------------------------------------------------------------ 64 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 This page for your notes. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 65 This page for your notes. 66 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 This page for your notes. Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 67 This page for your notes. 68 Pioneer Absolute Return Bond Fund | Annual Report | 8/31/15 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Write to us: -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: us.pioneerinvestments.com This report must be preceded or accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. [LOGO] PIONEER Investments(R) Pioneer Investment Management, Inc. 60 State Street Boston, MA 02109 us.pioneerinvestments.com Securities offered through Pioneer Funds Distributor, Inc. 60 State Street, Boston, MA 02109 Underwriter of Pioneer Mutual Funds, Member SIPC (c) 2015 Pioneer Investments 28082-01-1015 Pioneer Global Equity Fund -------------------------------------------------------------------------------- Annual Report | August 31, 2015 -------------------------------------------------------------------------------- Ticker Symbols: Class A GLOSX Class C GCSLX Class K PGEKX Class R PRGEX Class Y PGSYX [LOGO] PIONEER Investments(R) visit us: us.pioneerinvestments.com Table of Contents President's Letter 2 Portfolio Management Discussion 4 Portfolio Summary 8 Prices and Distributions 9 Performance Update 10 Comparing Ongoing Fund Expenses 15 Schedule of Investments 17 Financial Statements 25 Notes to Financial Statements 34 Report of Independent Registered Public Accounting Firm 44 Trustees, Officers and Service Providers 46 Pioneer Global Equity Fund | Annual Report | 8/31/15 1 President's Letter Dear Shareholder, In the second half of 2015, two main issues have been dominating the attention of global investors and policymakers alike, and shaping the current investment environment: The Federal Reserve System's (the Fed's) deliberations over when to begin normalizing interest rates in the U.S., and the increasing divergence in economic activity around the globe. As 2015 began, market expectations were that the Fed would likely begin raising interest rates by the middle of the year, but a sluggish gross domestic product report in the first calendar quarter as well as relatively benign inflation and wage growth contributed to the Fed's taking a more cautionary approach and delaying the start of its rate-hike cycle. At the same time, however, the U.S. labor market has continued its robust improvement, moving the Fed closer to declaring victory on one of its main monetary policy objectives -- full employment. Meanwhile, global economic activity has continued to diverge, with developed economies experiencing above-trend growth and most emerging markets economies lagging the rest of the world. The slower pace of economic activity in the emerging markets has been most evident in China, as the country's economy continues to undergo a long, potentially painful adjustment from investment-led growth to consumption-oriented growth. This divergence in global economic cycles is likely to continue for some time, and we would expect an increased level of volatility as global capital markets and policymakers adjust. Pioneer Investments believes that investors in today's environment can potentially benefit from the consistent and disciplined investment approach we have used since our founding in 1928. We focus on identifying value across global markets using proprietary research, careful risk management, and a long-term perspective. Our ongoing goal is to produce compelling returns consistent with the stated objectives of our investment products, and with our shareowners' expectations. We believe our shareowners can benefit from the experience and tenure of our investment teams as well as the insights generated from our extensive research process. 2 Pioneer Global Equity Fund | Annual Report | 8/31/15 As always, and particularly during times of market uncertainty, we encourage you to work with your financial advisor to develop an overall investment plan that addresses both your short- and long-term goals, and to implement such a plan in a disciplined manner. We greatly appreciate your trust in us in the past and look forward to continuing to serve you in the future. Sincerely, /s/ Lisa M. Jones Lisa M. Jones President and CEO Pioneer Investment Management USA, Inc. Any information in this shareowner report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Global Equity Fund | Annual Report | 8/31/15 3 Portfolio Management Discussion | 8/31/15 In the following interview, portfolio managers Marco Pirondini and David Glazer discuss the factors that influenced the performance of Pioneer Global Equity Fund during the 12-month period ended August 31, 2015. Mr. Pirondini, Head of Equities, U.S., Executive Vice President and a portfolio manager at Pioneer, and Mr. Glazer, a Senior Vice President and a portfolio manager at Pioneer, are responsible for the day-to-day management of the Fund. Q How did the Fund perform during the 12-month period ended August 31, 2015? A Pioneer Global Equity Fund's Class A shares returned -4.88% at net asset value during the 12-month period ended August 31, 2015, while the Fund's benchmarks, the Morgan Stanley Capital International (MSCI) World ND Index (the MSCI Index) and the MSCI All Country World ND Index(1), returned -4.13% and -6.29%, respectively*. During the same period, the average return of the 161 mutual funds in Lipper's Global Multi-Cap Core Funds category was -4.30%, and the average return of the 1,204 mutual funds in Morningstar's World Stock Funds category was -4.88%. Q How would you characterize the investment environment in the global equity markets during the 12-month period ended August 31, 2015? A The past 12 months have seen increased global market volatility, especially during the second half of the period. Some trends that were in place in 2014, including plunging energy and commodity prices, continued during the period and even deteriorated somewhat. We also have seen signs of economic recovery in Europe, where the European Central Bank's quantitative easing program seems to be having a positive effect, and in Japan, due in part to a new emphasis on increased return on equity from the country's government and business leaders. Less positively, the debacle in the commodity and energy sectors has taken its toll on the emerging markets, spurring sharply increased market volatility as well as currency devaluations within a number of emerging markets 1 The MSCI information may only be used for your internal use, may not be reproduced or redisseminated in any form and may not be used as a basis for or a component of any financial instruments or products or indices. None of the MSCI information is intended to constitute investment advice or a recommendation to make (or refrain from making) any kind of investment decision and may not be relied on as such. Historical data and analysis should not be taken as an indication or guarantee of any future performance analysis, forecast or prediction. The MSCI information is provided on an "as is" basis and the user of this information assumes the entire risk of any use made of this information. MSCI, each of its affiliates and each other person involved in or related to compiling, computing or creating any MSCI information (collectively, the "MSCI Parties") expressly disclaims all warranties (including, without limitation, any warranties of originality, accuracy, completeness, timeliness, non-infringement, merchantability and fitness for a particular purpose) with respect to this information. Without limiting any of the foregoing, in no event shall any MSCI Party have any liability for any direct, indirect, special, incidental, punitive, consequential (including, without limitation, lost profits) or any other damages. * The MSCI All Country World ND Index was recently added as a Fund benchmark, and the MSCI World ND Index remains a Fund benchmark. Going forward, Pioneer will report performance for both indices. For the 12-month period ended August 31, 2015, the MSCI World ND Index was the Fund's benchmark. 4 Pioneer Global Equity Fund | Annual Report | 8/31/15 nations. Though Greece's debt crisis and China's slumping economy were a source of negative headlines and a major focus for investors in July and August, we found the economic and currency crises in several South American countries, especially Brazil, to be more worrisome. Current concerns regarding emerging markets economies extend to certain multinational companies, which have been negatively affected by currency devaluations and market volatility. In addition, the International Monetary Fund and the World Bank have reduced their forecasts for global economic growth a number of times over the past 12 months, although growth in the United States, Europe, Japan, and even China has offset some of the negative effects of the sharp economic downturns in the emerging markets countries. Q Would you review the Fund's overall investment approach? A When picking investments for the portfolio we examine mid- and large- capitalization stocks worldwide, including those located in the emerging markets. From there, we build a diversified* portfolio. We look for stocks that we think can provide "growth at a reasonable price," and so there is a strong value component to our analysis. We seek to invest the Fund in companies that are not only benefiting from operating efficiencies as reflected in factors such as increased market share and revenues, but that are also employing their capital efficiently. In particular, we emphasize strong free cash flow, because that provides companies with the flexibility to make share buybacks, reinvest in their businesses, make acquisitions, and raise dividends**. We also look for stocks with attractive dividend yields as well as those trading at below-market valuations. Finally, we attempt to assess not only the potential price gains for each stock, but also the stock's potential for a decline in price if circumstances become unfavorable. We prefer stocks with the highest potential upside, relative to their downside. Q Which of your investment decisions or individual portfolio holdings either aided or detracted from the Fund's performance relative to the MSCI World ND Index during the 12-month period ended August 31, 2015? A During a period when there were sharp differences in performance between a number of market sectors, the Fund's overweight position in the outperforming health care sector relative to the benchmark contributed to relative returns, while significant portfolio underweights in energy and materials, which were down substantially during the period, also contributed to benchmark-relative performance. However, during the period, unfavorable stock selection results outweighed the Fund's positive sector allocations with regard to benchmark-relative performance. Most of the negative effects from stock selection came from holdings in the industrials and consumer discretionary sectors. In consumer discretionary, the Fund had significant exposure to the automotive sub-sector, including a position in Volkswagen, which struggled * Diversification does not assure a profit nor protect against loss. ** Dividends are not guaranteed. Pioneer Global Equity Fund | Annual Report | 8/31/15 5 during the period because of emerging markets-related concerns. In the media sub-sector, the portfolio's holding in U.S. broadcaster CBS also was down significantly. Among the Fund's Japanese holdings, Sekisui Chemical, which had contributed strongly to relative performance in the past, endured a significant sell-off during the 12-month period. Lastly, within industrials, Fund positions in American Airlines and Ingersoll Rand detracted from relative returns. On the positive side, stock selection within the financials sector contributed to benchmark-relative returns, as the Fund's position in the Swiss financial services company UBS represented the largest individual contributor to performance. UBS is a recent addition to the portfolio, and the company has been rewarded by investors for rebuilding its capital levels and restoring profitability. Stock selection in materials and telecommunication services also contributed to the Fund's benchmark-relative returns. Within materials, portfolio holdings in the Japanese specialty chemical company Nitto Denko performed well, as did a position in the Swiss agribusiness firm Syngenta. Also in Japan, the Fund's position in Nippon Telegraph & Telephone represented a significant contributor to benchmark-relative performance. Q Did you employ derivatives in managing the Fund during the 12-month period ended August 31, 2015, and did those investments have an effect on performance? A Over the 12-month period, we utilized derivatives very sparingly, mainly to give the Fund some exposure to the Japanese market. The positions had a slightly positive effect on performance. Q What is your outlook and how is it reflected in the Fund's current positioning? A We believe that it may take some time for the recent bout of market volatility to subside, given the negative environment for commodities and for a number of emerging markets economies, especially those in South America. The geopolitical situation in the Middle East also remains a concern. Additionally, market participants are closely monitoring the strength of the overall global economy, which has been benefiting from substantial economic stimulus by central banks, but, nevertheless, seems on the verge of deceleration. For those reasons -- even though we intend to reduce the Fund's current 5% cash allocation in the near future -- we plan to maintain a defensive stance within the portfolio over the coming months, provided that there are no dramatic shifts in market conditions. As part of taking the defensive posture, we have reduced some of the Fund's geographic weightings. At period end, the Fund maintained a small overweight to Japan, and we had increased exposure to Europe. The Greek debt crisis has, in our opinion, created some attractive equity valuations within Europe, and so we have sought to take advantage. In addition, the Fund is underweight the commodity-sensitive countries of Canada and Australia. 6 Pioneer Global Equity Fund | Annual Report | 8/31/15 Among defensive and non-cyclical sectors, we have continued to emphasize holdings in health care and telecommunication services. Within cyclical market sectors, the Fund is overweight financials and consumer discretionary. The Fund also maintained meaningful underweights in energy, materials and industrials as of period end. Overall, we believe that valuations in the market are attractive, and that our focus on owning companies that are in a stronger-than-average financial position should benefit the Fund's performance over time. Please refer to the Schedule of Investments on pages 17-24 for a full listing of fund securities. Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, economic, and political conditions. The Fund is subject to currency risk, meaning that the Fund could experience losses based on changes in the exchange rate between non-U.S. currencies and the U.S. dollar. Investments in small and mid-sized companies may offer the potential for higher returns, but are also subject to greater short-term price fluctuations than larger, more established companies. When interest rates rise, the prices of fixed-income securities in the Fund will generally fall. Conversely, when interest rates fall, the prices of fixed-income securities in the Fund will generally rise. The Fund may use derivatives, such as options, futures, inverse floating rate obligations, swaps, and others, which can be illiquid, may disproportionately increase losses, and have a potentially large impact on Fund performance. Derivatives may have a leveraging effect on the Fund. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. These risks may increase share price volatility. Before investing, consider the product's investment objectives, risks, charges and expenses. Contact your advisor or Pioneer Investments for a prospectus or summary prospectus containing this information. Read it carefully. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. Past performance is no guarantee of future results. Pioneer Global Equity Fund | Annual Report | 8/31/15 7 Portfolio Summary | 8/31/15 Sector Distribution -------------------------------------------------------------------------------- (As a percentage of long-term holdings) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] Financials 26.9% Health Care 19.6% Information Technology 18.3% Consumer Discretionary 12.5% Consumer Staples 9.4% Industrials 6.1% Telecommunication Services 3.5% Energy 1.9% Materials 1.8% Geographical Distribution -------------------------------------------------------------------------------- (As a percentage of long-term holdings) [THE FOLLOWING DATA WAS REPRESENTED AS A BAR CHART IN THE PRINTED MATERIAL] United States 54.7% Japan 13.7% Switzerland 8.4% Germany 5.3% United Kingdom 4.7% Ireland 2.2% France 1.8% Sweden 1.8% United Arab Emirates 1.4% Hong Kong 1.2% Other (individually less than 1%) 4.8% 10 Largest Holdings -------------------------------------------------------------------------------- (As a percentage of long-term holdings)* 1. Microsoft Corp. 3.88% -------------------------------------------------------------------------------- 2. Cardinal Health, Inc. 3.46 -------------------------------------------------------------------------------- 3. CVS Health Corp. 3.33 -------------------------------------------------------------------------------- 4. Johnson & Johnson 3.11 -------------------------------------------------------------------------------- 5. Apple, Inc. 2.69 -------------------------------------------------------------------------------- 6. Allianz SE 2.65 -------------------------------------------------------------------------------- 7. Pfizer, Inc. 2.52 -------------------------------------------------------------------------------- 8. Roche Holding AG 2.52 -------------------------------------------------------------------------------- 9. JPMorgan Chase & Co. 2.35 -------------------------------------------------------------------------------- 10. Novartis AG 2.23 -------------------------------------------------------------------------------- * This list excludes temporary cash investments and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 8 Pioneer Global Equity Fund | Annual Report | 8/31/15 Prices and Distributions | 8/31/15 Net Asset Value per Share -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Class 8/31/15 8/31/14 -------------------------------------------------------------------------------- A $13.00 $14.05 -------------------------------------------------------------------------------- C $12.72 $13.78 -------------------------------------------------------------------------------- Y $13.06 $14.12 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Class 8/31/15 12/31/14* -------------------------------------------------------------------------------- K $13.03 $13.51 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Class 8/31/15 7/1/15** -------------------------------------------------------------------------------- R $12.99 $14.08 -------------------------------------------------------------------------------- Distributions per Share:9/1/14-8/31/15 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains -------------------------------------------------------------------------------- A $0.3828 $-- $-- -------------------------------------------------------------------------------- C $0.3047 $-- $-- -------------------------------------------------------------------------------- K $ -- $-- $-- -------------------------------------------------------------------------------- R $ -- $-- $-- -------------------------------------------------------------------------------- Y $0.4492 $-- $-- -------------------------------------------------------------------------------- The Morgan Stanley Capital International (MSCI) World ND Index is an unmanaged measure of the performance of stock markets in the developed world. The MSCI All Country World ND Index is an unmanaged, free-float-adjusted, market-capitalization-weighted index that is designed to measure the equity market performance of developed and emerging markets. The Index consists of 45 country indices comprising 24 developed and 21 emerging market country indices. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. It is not possible to invest directly in an index. The index defined here pertains to the "Value of $10,000 Investment" and "Value of $5 Million Investment" charts on pages 10-14. * Class K shares commenced operations on December 31, 2014. ** Class R shares commenced operations on July 1, 2015. Pioneer Global Equity Fund | Annual Report | 8/31/15 9 Performance Update | 8/31/15 Class A Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class A shares of Pioneer Global Equity Fund at public offering price during the periods shown, compared to that of the Morgan Stanley Capital International (MSCI) World ND Index and the MSCI All Country World ND Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- MSCI Net Public MSCI All Asset Offering World Country Value Price ND World Period (NAV) (POP) Index ND Index -------------------------------------------------------------------------------- Life-of-Class 12/15/2005 4.87% 4.23% 4.90% 4.74% 5 Years 10.75 9.46 11.07 9.60 1 Year -4.88 -10.37 -4.13 -6.29 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated July 1, 2015) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 1.61% 1.35% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global MSCI World MSCI AC Equity Fund ND Index World ND IX 12/05 $ 9,425 $ 10,000 $ 10,000 8/06 $ 10,547 $ 10,949 $ 10,962 8/07 $ 12,085 $ 12,807 $ 13,052 8/08 $ 10,794 $ 11,261 $ 11,493 8/09 $ 9,085 $ 9,323 $ 9,605 8/10 $ 8,982 $ 9,467 $ 9,941 8/11 $ 9,923 $ 10,836 $ 11,304 8/12 $ 10,470 $ 11,716 $ 12,007 8/13 $ 12,477 $ 13,781 $ 13,865 8/14 $ 15,736 $ 16,688 $ 16,775 8/15 $ 14,968 $ 15,999 $ 15,720 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 5.75% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2017, for Class A shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 10 Pioneer Global Equity Fund | Annual Report | 8/31/15 Performance Update | 8/31/15 Class C Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class C shares of Pioneer Global Equity Fund during the periods shown, compared to that of the Morgan Stanley Capital International (MSCI) World ND Index and the MSCI All Country World ND Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- MSCI MSCI All World Country If If ND World Period Held Redeemed Index ND Index -------------------------------------------------------------------------------- Life-of-Class 12/15/2005 3.94% 3.94% 4.90% 4.74% 5 Years 9.77 9.77 11.07 9.60 1 Year -5.60 -5.60 -4.13 -6.29 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated July 1, 2015) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.40% 2.25% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global MSCI World MSCI AC Equity Fund ND Index World ND IX 12/05 $ 10,000 $ 10,000 $ 10,000 8/06 $ 11,111 $ 10,949 $ 10,962 8/07 $ 12,628 $ 12,807 $ 13,052 8/08 $ 11,179 $ 11,261 $ 11,493 8/09 $ 9,326 $ 9,323 $ 9,605 8/10 $ 9,139 $ 9,467 $ 9,941 8/11 $ 9,997 $ 10,836 $ 11,304 8/12 $ 10,453 $ 11,716 $ 12,007 8/13 $ 12,347 $ 13,781 $ 13,865 8/14 $ 15,432 $ 16,688 $ 16,775 8/15 $ 14,567 $ 15,999 $ 15,720 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2017, for Class C shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Global Equity Fund | Annual Report | 8/31/15 11 Performance Update | 8/31/15 Class K Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class K shares of Pioneer Global Equity Fund during the periods shown, compared to that of the Morgan Stanley Capital International (MSCI) World ND Index and the MSCI All Country World ND Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- MSCI Net MSCI All Asset World Country Value ND World Period (NAV) Index ND Index -------------------------------------------------------------------------------- Life-of-Class 12/15/2005 4.89% 4.90% 4.74% 5 Years 10.80 11.07 9.60 1 Year -4.66 -4.13 -6.29 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated July 1, 2015) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 1.00% 0.85% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global MSCI World MSCI AC Equity Fund ND Index World ND IX 12/05 $ 10,000 $ 10,000 $ 10,000 8/06 $ 11,191 $ 10,949 $ 10,962 8/07 $ 12,823 $ 12,807 $ 13,052 8/08 $ 11,453 $ 11,261 $ 11,493 8/09 $ 9,640 $ 9,323 $ 9,605 8/10 $ 9,530 $ 9,467 $ 9,941 8/11 $ 10,529 $ 10,836 $ 11,304 8/12 $ 11,109 $ 11,716 $ 12,007 8/13 $ 13,238 $ 13,781 $ 13,865 8/14 $ 16,697 $ 16,688 $ 16,775 8/15 $ 15,918 $ 15,999 $ 15,720 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. The performance shown for Class K shares for the period prior to the commencement of operations of Class K shares on December 31, 2014, is the net asset value performance of the Fund's Class A shares, which has not been restated to reflect any differences in expenses, including Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares generally are higher than those of Class K shares, the performance of Class K shares prior to their inception would have been higher than the performance shown. For the period beginning December 31, 2014, the actual performance of Class K shares is reflected. Class K shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2017, for Class K shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 12 Pioneer Global Equity Fund | Annual Report | 8/31/15 Performance Update | 8/31/15 Class R Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class R shares of Pioneer Global Equity Fund during the periods shown, compared to that of the Morgan Stanley Capital International (MSCI) World ND Index and the MSCI All Country World ND Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- MSCI Net MSCI All Asset World Country Value ND World Period (NAV) Index ND Index -------------------------------------------------------------------------------- Life-of-Class 12/15/2005 4.86% 4.90% 4.74% 5 Years 10.74 11.07 9.60 1 Year -4.96 -4.13 -6.29 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated July 1, 2015) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 1.72% 1.60% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global MSCI World MSCI AC Equity Fund ND Index World ND IX 12/05 $ 10,000 $ 10,000 $ 10,000 8/06 $ 11,191 $ 10,949 $ 10,962 8/07 $ 12,823 $ 12,807 $ 13,052 8/08 $ 11,453 $ 11,261 $ 11,493 8/09 $ 9,640 $ 9,323 $ 9,605 8/10 $ 9,530 $ 9,467 $ 9,941 8/11 $ 10,529 $ 10,836 $ 11,304 8/12 $ 11,109 $ 11,716 $ 12,007 8/13 $ 13,238 $ 13,781 $ 13,865 8/14 $ 16,697 $ 16,688 $ 16,775 8/15 $ 15,869 $ 15,999 $ 15,720 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. The performance shown for Class R shares for the period prior to the commencement of operations of Class R shares on July 1, 2015, is the net asset value performance of the Fund's Class A shares, which has not been restated to reflect any differences in expenses, including Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares generally are higher than those of Class R shares, the performance of Class R shares prior to their inception would have been higher than the performance shown. For the period beginning July 1, 2015, the actual performance of Class R shares is reflected. Class R shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2017, for Class R shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Global Equity Fund | Annual Report | 8/31/15 13 Performance Update | 8/31/15 Class Y Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Class Y shares of Pioneer Global Equity Fund during the periods shown, compared to that of the Morgan Stanley Capital International (MSCI) World ND Index and the MSCI All Country World ND Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- MSCI Net MSCI All Asset World Country Value ND World Period (NAV) Index ND Index -------------------------------------------------------------------------------- Life-of-Class 12/15/2005 5.22% 4.90% 4.74% 5 Years 11.27 11.07 9.60 1 Year -4.48 -4.13 -6.29 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated July 1, 2015) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 1.00% 0.85% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Global MSCI World MSCI AC Equity Fund ND Index World ND IX 12/05 $ 5,000,000 $ 5,000,000 $ 5,000,000 8/06 $ 5,595,596 $ 5,474,445 $ 5,481,196 8/07 $ 6,411,652 $ 6,403,612 $ 6,525,919 8/08 $ 5,726,587 $ 5,630,699 $ 5,746,515 8/09 $ 4,836,744 $ 4,661,475 $ 4,802,534 8/10 $ 4,808,018 $ 4,733,454 $ 4,970,309 8/11 $ 5,335,128 $ 5,417,874 $ 5,651,996 8/12 $ 5,659,822 $ 5,857,774 $ 6,003,320 8/13 $ 6,777,847 $ 6,890,617 $ 6,932,391 8/14 $ 8,584,523 $ 8,344,239 $ 8,387,474 8/15 $ 8,200,228 $ 7,999,625 $ 7,860,207 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Performance shown for periods prior to the inception of the Fund's Class Y shares on December 31, 2008, is the NAV performance of the Fund's Class A shares. The performance does not reflect differences in expenses, including the Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares are generally higher than those of Class Y shares, the performance for Class Y shares prior to their inception would have been higher than the performance shown. For the period beginning December 31, 2008, the actual performance of Class Y shares is reflected. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2017, for Class Y shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 14 Pioneer Global Equity Fund | Annual Report | 8/31/15 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments and redemption fees. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value (divided by) $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Global Equity Fund Based on actual returns from March 1, 2015, through August 31, 2015. -------------------------------------------------------------------------------- Share Class A C K R Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 $1,000.00 $1,000.00 Value on 3/1/15 -------------------------------------------------------------------------------- Ending Account $ 932.64 $ 914.20 $ 964.50 $ 922.60 $ 934.18 Value on 8/31/15 -------------------------------------------------------------------------------- Expenses Paid $ 6.53 $ 10.08 $ 4.11 $ 2.32 $ 4.10 During Period* -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized net expense ratio plus the expense ratios of the underlying funds. These combined totals were 1.34%, 2.09%, 0.83%, 1.42% and 0.84% for Class A, Class C, Class K, Class R, and Class Y shares, respectively. These combined ratios were multiplied by the average account value over the period and then multiplied by 184/365 and (62/365) for Class R shares (to reflect the one-half year period). Pioneer Global Equity Fund | Annual Report | 8/31/15 15 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) or redemption fees that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Global Equity Fund Based on a hypothetical 5% return per year before expenses, reflecting the period from March 1, 2015, through August 31, 2015. -------------------------------------------------------------------------------- Share Class A C K R Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 $1,000.00 $1,000.00 Value on 3/1/15 -------------------------------------------------------------------------------- Ending Account $1,018.45 $1,014.67 $1,021.02 $1,006.08 $1,020.97 Value on 8/31/15 -------------------------------------------------------------------------------- Expenses Paid $ 6.82 $ 10.61 $ 4.23 $ 2.42 $ 4.28 During Period* -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized net expense ratio plus the expense ratios of the underlying funds. These combined totals were 1.34%, 2.09%, 0.83%, 1.42% and 0.84% for Class A, Class C, Class K, Class R, and Class Y shares, respectively. These combined ratios were multiplied by the average account value over the period and then multiplied by 184/365 and (62/365) for Class R shares (to reflect the one-half year period). 16 Pioneer Global Equity Fund | Annual Report | 8/31/15 Schedule of Investments | 8/31/15 --------------------------------------------------------------------------------------------- Shares Value --------------------------------------------------------------------------------------------- COMMON STOCKS -- 95.3% ENERGY -- 1.8% Oil & Gas Equipment & Services -- 1.1% 18,276 Baker Hughes, Inc. $ 1,023,456 11,160 Schlumberger, Ltd. 863,449 ------------- $ 1,886,905 --------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 0.7% 74,988 Southwestern Energy Co.* $ 1,217,805 ------------- Total Energy $ 3,104,710 --------------------------------------------------------------------------------------------- MATERIALS -- 1.5% Commodity Chemicals -- 0.6% 14,427 Methanex Corp. $ 589,675 12,389 Methanex Corp. 504,976 ------------- $ 1,094,651 --------------------------------------------------------------------------------------------- Fertilizers & Agricultural Chemicals -- 0.9% 4,276 Syngenta AG $ 1,480,611 ------------- Total Materials $ 2,575,262 --------------------------------------------------------------------------------------------- CAPITAL GOODS -- 2.5% Heavy Electrical Equipment -- 1.2% 206,000 Mitsubishi Electric Corp. $ 2,048,672 --------------------------------------------------------------------------------------------- Construction & Farm Machinery & Heavy Trucks -- 0.4% 5,999 WABCO Holdings, Inc.* $ 691,805 --------------------------------------------------------------------------------------------- Industrial Machinery -- 0.9% 26,206 Ingersoll-Rand Plc $ 1,448,930 158,400 Sarine Technologies, Ltd. 156,579 ------------- $ 1,605,509 ------------- Total Capital Goods $ 4,345,986 --------------------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES -- 0.7% Diversified Support Services -- 0.0%+ 1,667 TransUnion $ 43,109 --------------------------------------------------------------------------------------------- Human Resource & Employment Services -- 0.7% 10,151 Towers Watson & Co. $ 1,205,228 ------------- Total Commercial Services & Supplies $ 1,248,337 --------------------------------------------------------------------------------------------- TRANSPORTATION -- 2.5% Airlines -- 2.5% 67,104 American Airlines Group, Inc. $ 2,615,714 68,098 EasyJet Plc 1,745,852 ------------- $ 4,361,566 ------------- Total Transportation $ 4,361,566 --------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 3.8% Auto Parts & Equipment -- 0.7% 76,650 SAF-Holland SA* $ 1,088,364 --------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global Equity Fund | Annual Report | 8/31/15 17 Schedule of Investments | 8/31/15 (continued) --------------------------------------------------------------------------------------------- Shares Value --------------------------------------------------------------------------------------------- Tires & Rubber -- 1.2% 62,700 Bridgestone Corp. $ 2,097,975 --------------------------------------------------------------------------------------------- Automobile Manufacturers -- 1.9% 25,886 Daimler AG $ 2,083,896 6,509 Volkswagen AG 1,218,437 ------------- $ 3,302,333 ------------- Total Automobiles & Components $ 6,488,672 --------------------------------------------------------------------------------------------- CONSUMER DURABLES & APPAREL -- 3.0% Consumer Electronics -- 0.5% 80,700 Panasonic Corp. $ 887,621 --------------------------------------------------------------------------------------------- Homebuilding -- 2.5% 49,573 PulteGroup, Inc. $ 1,025,665 286,000 Sekisui Chemical Co., Ltd. 3,147,941 ------------- $ 4,173,606 ------------- Total Consumer Durables & Apparel $ 5,061,227 --------------------------------------------------------------------------------------------- CONSUMER SERVICES -- 2.2% Hotels, Resorts & Cruise Lines -- 1.4% 44,540 InterContinental Hotels Group Plc $ 1,671,116 10,021 Marriott International, Inc. 708,084 ------------- $ 2,379,200 --------------------------------------------------------------------------------------------- Restaurants -- 0.8% 99,658 Domino's Pizza Group Plc $ 1,313,639 ------------- Total Consumer Services $ 3,692,839 --------------------------------------------------------------------------------------------- MEDIA -- 2.1% Advertising -- 0.8% 19,037 Publicis Groupe SA $ 1,353,072 --------------------------------------------------------------------------------------------- Broadcasting -- 1.1% 40,760 CBS Corp. (Class B) $ 1,843,982 --------------------------------------------------------------------------------------------- Movies & Entertainment -- 0.2% 10,877 Viacom, Inc. (Class B) $ 443,455 ------------- Total Media $ 3,640,509 --------------------------------------------------------------------------------------------- RETAILING -- 0.9% Apparel Retail -- 0.9% 30,890 Ross Stores, Inc. $ 1,501,872 ------------- Total Retailing $ 1,501,872 --------------------------------------------------------------------------------------------- FOOD & STAPLES RETAILING -- 5.4% Drug Retail -- 3.4% 53,013 CVS Health Corp. $ 5,428,531 9,000 Sundrug Co., Ltd. 504,302 ------------- $ 5,932,833 --------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 18 Pioneer Global Equity Fund | Annual Report | 8/31/15 --------------------------------------------------------------------------------------------- Shares Value --------------------------------------------------------------------------------------------- Food Retail -- 2.0% 66,781 Jeronimo Martins SGPS SA $ 923,721 28,323 Walgreens Boots Alliance, Inc. 2,451,356 ------------- $ 3,375,077 ------------- Total Food & Staples Retailing $ 9,307,910 --------------------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 3.6% Soft Drinks -- 1.0% 166,998 Britvic Plc $ 1,705,622 --------------------------------------------------------------------------------------------- Packaged Foods & Meats -- 1.1% 19,955 Keurig Green Mountain, Inc. $ 1,129,453 1,259,500 WH Group, Ltd.* 659,052 ------------- $ 1,788,505 --------------------------------------------------------------------------------------------- Tobacco -- 1.5% 72,800 Japan Tobacco, Inc. $ 2,591,653 ------------- Total Food, Beverage & Tobacco $ 6,085,780 --------------------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 4.8% Health Care Equipment -- 0.6% 7,510 Edwards Lifesciences Corp.* $ 1,058,009 --------------------------------------------------------------------------------------------- Health Care Distributors -- 3.5% 68,540 Cardinal Health, Inc. $ 5,638,786 12,202 Fagron 323,273 ------------- $ 5,962,059 --------------------------------------------------------------------------------------------- Health Care Technology -- 0.7% 54,630 NNIT A/S $ 1,256,931 ------------- Total Health Care Equipment & Services $ 8,276,999 --------------------------------------------------------------------------------------------- PHARMACEUTICALS, BIOTECHNOLOGY & LIFE SCIENCES -- 13.9% Biotechnology -- 1.1% 17,250 Gilead Sciences, Inc.* $ 1,812,458 --------------------------------------------------------------------------------------------- Pharmaceuticals -- 12.1% 8,148 Jazz Pharmaceuticals Plc* $ 1,375,545 53,931 Johnson & Johnson 5,068,435 30,551 Merck & Co., Inc. 1,645,171 37,195 Novartis AG 3,638,039 127,664 Pfizer, Inc. 4,113,334 15,134 Roche Holding AG 4,108,276 10,951 Shire Plc 846,256 ------------- $ 20,795,056 --------------------------------------------------------------------------------------------- Life Sciences Tools & Services -- 0.7% 9,476 Thermo Fisher Scientific, Inc. $ 1,188,006 ------------- Total Pharmaceuticals, Biotechnology & Life Sciences $ 23,795,520 --------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global Equity Fund | Annual Report | 8/31/15 19 Schedule of Investments | 8/31/15 (continued) --------------------------------------------------------------------------------------------- Shares Value --------------------------------------------------------------------------------------------- BANKS -- 13.3% Diversified Banks -- 10.7% 823,387 Abu Dhabi Commercial Bank PJSC $ 1,791,803 265,702 Aldermore Group Plc 1,233,829 23,552 Citigroup, Inc. 1,259,561 132,154 First Gulf Bank PJSC 515,839 59,879 JPMorgan Chase & Co. 3,838,244 515,000 Mitsubishi UFJ Financial Group, Inc. 3,387,457 140,885 Nordea Bank AB 1,664,638 82,100 Sumitomo Mitsui Financial Group, Inc. 3,350,148 55,873 Swedbank AB 1,274,527 ------------- $ 18,316,046 --------------------------------------------------------------------------------------------- Regional Banks -- 2.6% 35,000 Citizens Financial Group, Inc. $ 868,700 38,836 The PNC Financial Services Group, Inc. 3,538,736 ------------- $ 4,407,436 ------------- Total Banks $ 22,723,482 --------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 9.0% Other Diversified Financial Services -- 1.5% 60,287 Voya Financial, Inc. $ 2,597,164 --------------------------------------------------------------------------------------------- Specialized Finance -- 2.5% 9,169 Intercontinental Exchange, Inc. $ 2,094,291 42,370 Nasdaq, Inc. 2,168,920 ------------- $ 4,263,211 --------------------------------------------------------------------------------------------- Consumer Finance -- 1.3% 39,738 Discover Financial Services, Inc. $ 2,135,123 --------------------------------------------------------------------------------------------- Investment Banking & Brokerage -- 1.4% 69,881 Morgan Stanley Co. $ 2,407,400 --------------------------------------------------------------------------------------------- Diversified Capital Markets -- 2.3% 70,725 Credit Suisse Group AG $ 1,900,973 100,363 UBS Group AG 2,076,510 ------------- $ 3,977,483 ------------- Total Diversified Financials $ 15,380,381 --------------------------------------------------------------------------------------------- INSURANCE -- 2.8% Multi-line Insurance -- 2.8% 27,005 Allianz SE* $ 4,314,910 1,816 Zurich Insurance Group AG 498,592 ------------- $ 4,813,502 ------------- Total Insurance $ 4,813,502 --------------------------------------------------------------------------------------------- REAL ESTATE -- 0.6% Diversified Real Estate Activities -- 0.6% 195,800 Leopalace21 Corp. $ 950,389 ------------- Total Real Estate $ 950,389 --------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 20 Pioneer Global Equity Fund | Annual Report | 8/31/15 --------------------------------------------------------------------------------------------- Shares Value --------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 10.3% Internet Software & Services -- 4.3% 57,401 eBay, Inc. * $ 1,556,141 4,466 Google, Inc. (Class A)* 2,893,164 4,688 Google, Inc. (Class C) 2,898,356 ------------- $ 7,347,661 --------------------------------------------------------------------------------------------- Data Processing & Outsourced Services -- 2.3% 57,401 PayPal Holdings, Inc. $ 2,009,035 26,582 Visa, Inc. 1,895,297 ------------- $ 3,904,332 --------------------------------------------------------------------------------------------- Systems Software -- 3.7% 145,544 Microsoft Corp. $ 6,334,076 ------------- Total Software & Services $ 17,586,069 --------------------------------------------------------------------------------------------- TECHNOLOGY HARDWARE & EQUIPMENT -- 5.8% Communications Equipment -- 0.7% 22,127 Qualcomm, Inc. $ 1,251,946 --------------------------------------------------------------------------------------------- Computer Storage & Peripherals -- 2.6% 38,829 Apple, Inc. $ 4,378,358 --------------------------------------------------------------------------------------------- Computer Hardware Storage & Peripherals -- 1.4% 76,662 NetApp, Inc. $ 2,450,118 --------------------------------------------------------------------------------------------- Electronic Equipment Manufacturers -- 0.9% 922,000 PAX Global Technology, Ltd.* $ 854,704 628,000 Wasion Group Holdings, Ltd. 598,779 ------------- $ 1,453,483 --------------------------------------------------------------------------------------------- Electronic Manufacturing Services -- 0.2% 95,000 Global Display Co., Ltd. $ 327,544 ------------- Total Technology Hardware & Equipment $ 9,861,449 --------------------------------------------------------------------------------------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 1.4% Semiconductors -- 1.4% 501,000 Advanced Semiconductor Engineering, Inc. $ 509,636 42,865 SK Hynix, Inc. 1,296,623 224,000 Transcend Information, Inc. 603,533 ------------- $ 2,409,792 ------------- Total Semiconductors & Semiconductor Equipment $ 2,409,792 --------------------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES -- 3.4% Integrated Telecommunication Services -- 3.4% 66,522 Euskaltel SA $ 782,953 88,800 Nippon Telegraph & Telephone Corp. 3,393,624 106,136 Orange SA 1,675,620 ------------- $ 5,852,197 ------------- Total Telecommunication Services $ 5,852,197 --------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global Equity Fund | Annual Report | 8/31/15 21 Schedule of Investments | 8/31/15 (continued) --------------------------------------------------------------------------------------------- Shares Value --------------------------------------------------------------------------------------------- TOTAL COMMON STOCKS (Cost $159,521,016) $ 163,064,450 --------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 95.3% (Cost $159,521,016) (a) (b) $ 163,064,450 --------------------------------------------------------------------------------------------- OTHER ASSETS & LIABILITIES -- 4.7% $ 8,026,760 --------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $ 171,091,210 ============================================================================================= * Non-income producing security. + Amount rounds to less than 0.1%. (a) At August 31, 2015, the net unrealized appreciation on investments based on cost for federal income tax purposes of $159,667,839 was as follows: Aggregate gross unrealized appreciation for all investments in which there is an excess of value over tax cost $ 12,977,044 Aggregate gross unrealized depreciation for all investments in which there is an excess of tax cost over value (9,580,433) ------------- Net unrealized appreciation $ 3,396,611 ============= (b) Distributions of investments by country of issue, as a percentage of total investment in securities (excluding temporary cash investments), is as follows: United States 54.7% Japan 13.7% Switzerland 8.4% Germany 5.3% United Kingdom 4.7% Ireland 2.2% France 1.8% Sweden 1.8% United Arab Emirates 1.4% Hong Kong 1.2% Other (individually less than 1%) 4.8% ----- 100.0% ===== Purchases and sales of securities (excluding temporary cash investments) for the year ended August 31, 2015 aggregated $188,886,111 and $176,728,085, respectively. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Level 1 -- quoted prices in active markets for identical securities. Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) See Notes to Financial Statements -- Note 1A. Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) See Notes to Financial Statements -- Note 1A. Generally, equity securities are categorized as Level 1, fixed income securities and senior loans as Level 2 and securities valued using fair value methods (other than prices supplied by independent pricing services or broker-dealers) as Level 3. See Notes to Financial Statements -- Note 1A. The accompanying notes are an integral part of these financial statements. 22 Pioneer Global Equity Fund | Annual Report | 8/31/15 The following is a summary of the inputs used as of August 31, 2015, in valuing the Fund's investments: --------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total --------------------------------------------------------------------------------------- Common Stocks Energy Oil & Gas Equipment & Services $ 1,886,905 $ -- $ -- $ 1,886,905 Oil & Gas Exploration & Production 1,217,805 -- -- 1,217,805 Materials Commodity Chemicals 1,094,651 -- -- 1,094,651 Capital Goods Construction & Farm Machinery & Heavy Trucks 691,805 -- -- 691,805 Industrial Machinery 1,448,930 156,579 -- 1,605,509 Commercial Services & Supplies Diversified Support Services 43,109 -- -- 43,109 Human Resource & Employment Services 1,205,228 -- -- 1,205,228 Transportation Airlines 2,615,714 1,745,852 -- 4,361,566 Consumer Durables & Apparel Homebuilding 1,025,665 3,147,941 -- 4,173,606 Consumer Services Hotels, Resorts & Cruise Lines 708,084 1,671,116 -- 2,379,200 Media Broadcasting 1,843,982 -- -- 1,843,982 Movies & Entertainment 443,455 -- -- 443,455 Retailing Apparel Retail 1,501,872 -- -- 1,501,872 Food & Staples Retailing Drug Retail 5,428,531 504,302 -- 5,932,833 Food Retail 2,451,356 923,721 -- 3,375,077 Food, Beverage & Tobacco Packaged Foods & Meats 1,129,453 659,052 -- 1,788,505 Health Care Equipment & Services Health Care Equipment 1,058,009 -- -- 1,058,009 Health Care Distributors 5,638,786 323,273 -- 5,962,059 Pharmaceuticals, Biotechnology & Life Sciences Biotechnology 1,812,458 -- -- 1,812,458 Pharmaceuticals 12,202,485 8,592,571 -- 20,795,056 Life Sciences Tools & Services 1,188,006 -- -- 1,188,006 Banks Diversified Banks 5,097,805 13,218,241 -- 18,316,046 Regional Banks 4,407,436 -- -- 4,407,436 The accompanying notes are an integral part of these financial statements. Pioneer Global Equity Fund | Annual Report | 8/31/15 23 Schedule of Investments | 8/31/15 (continued) ---------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ---------------------------------------------------------------------------------- Diversified Financials Other Diversified Financial Services $ 2,597,164 $ -- $ -- $ 2,597,164 Specialized Finance 4,263,211 -- -- 4,263,211 Consumer Finance 2,135,123 -- -- 2,135,123 Investment Banking & Brokerage 2,407,400 -- -- 2,407,400 Software & Services Internet Software & Services 7,347,661 -- -- 7,347,661 Data Processing & Outsourced Services 3,904,332 -- -- 3,904,332 Systems Software 6,334,076 -- -- 6,334,076 Technology Hardware & Equipment Communications Equipment 1,251,946 -- -- 1,251,946 Computer Storage & Peripherals 4,378,358 -- -- 4,378,358 Computer Hardware Storage & Peripherals 2,450,118 -- -- 2,450,118 All Other Common Stocks -- 38,910,883 -- 38,910,883 ---------------------------------------------------------------------------------- Total $93,210,919 $ 69,853,531 $ -- $163,064,450 ================================================================================== During the year ended August 31, 2015, there were no transfers between Levels 1, 2 and 3. The following is a summary of the fair valuation of certain Fund's assets and liabilities as of August 31, 2015. ---------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ---------------------------------------------------------------------------------- Assets: Restricted cash $ -- $ 839,500 $ -- $ 839,500 Cash at broker -- 93,000 -- 93,000 Foreign currencies -- 1,309,010 -- 1,309,010 ---------------------------------------------------------------------------------- Total $ -- $2,241,510 $ -- $2,241,510 ================================================================================== The accompanying notes are an integral part of these financial statements. 24 Pioneer Global Equity Fund | Annual Report | 8/31/15 Statement of Assets and Liabilities | 8/31/15 ASSETS: Investment in securities (cost $159,521,016) $163,064,450 Cash 8,157,728 Foreign currencies, at value (cost $1,298,712) 1,309,010 Restricted cash 839,500 Cash at broker 93,000 Receivables -- Investment securities sold 505,333 Fund shares sold 120,799 Dividends and foreign taxes withheld of $20,801 564,675 Due from Pioneer Investment Management, Inc. 90,318 Other assets 27,514 -------------------------------------------------------------------------------------- Total assets $174,772,327 ====================================================================================== LIABILITIES: Payables -- Investment securities purchased $ 3,319,701 Fund shares repurchased 109,972 Trustee fees 985 Due to affiliates 81,865 Accrued expenses 168,594 -------------------------------------------------------------------------------------- Total liabilities $ 3,681,117 ====================================================================================== NET ASSETS: Paid-in capital $182,841,703 Undistributed net investment income 1,034,603 Accumulated net realized loss on investments, futures contracts, swap contracts and foreign currency transactions (16,301,904) Net unrealized appreciation on investments 3,543,434 Net unrealized depreciation on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (26,626) -------------------------------------------------------------------------------------- Total net assets $171,091,210 ====================================================================================== NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $77,114,732/5,932,173 shares) $ 13.00 Class C (based on $13,552,129/1,065,094 shares) $ 12.72 Class K (based on $54,304,618/4,166,062 shares) $ 13.03 Class R (based on $2,304,255/177,324 shares) $ 12.99 Class Y (based on $23,815,476/1,823,103 shares) $ 13.06 MAXIMUM OFFERING PRICE: Class A ($13.00 (divided by) 94.25%) $ 13.79 ====================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Global Equity Fund | Annual Report | 8/31/15 25 Statement of Operations For the Year Ended 8/31/15 INVESTMENT INCOME: Dividends (net of foreign taxes withheld of $174,485) $ 3,204,244 Interest 600 --------------------------------------------------------------------------------------------------------------- Total investment income $ 3,204,844 --------------------------------------------------------------------------------------------------------------- EXPENSES: Management fees $ 1,265,457 Transfer agent fees Class A 173,985 Class B* 4,270 Class C 19,846 Class R 15 Class Y 575 Distribution fees Class A 200,168 Class B* 3,685 Class C 120,428 Class R 860 Shareholder communications expense 116,422 Administrative reimbursements 63,583 Custodian fees 46,924 Registration fees 67,226 Professional fees 64,007 Printing expense 34,911 Fees and expenses of nonaffiliated Trustees 6,826 Miscellaneous 18,055 --------------------------------------------------------------------------------------------------------------- Total expenses $ 2,207,243 Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (306,852) --------------------------------------------------------------------------------------------------------------- Net expenses $ 1,900,391 --------------------------------------------------------------------------------------------------------------- Net investment income $ 1,304,453 --------------------------------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS, FUTURES CONTRACTS,WRITTEN OPTIONS, TOTAL RETURN SWAP AND FOREIGN CURRENCY TRANSACTIONS: Net realized gain (loss) on: Investments (net of foreign capital gains taxes of $113,048) $ 10,046,481 Futures contracts (717,347) Total return swap 1,303,407 Written options 61,281 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (188,525) $ 10,505,297 --------------------------------------------------------------------------------------------------------------- Change in net unrealized appreciation (depreciation) on: Investments $ (20,678,275) Futures contracts 147,350 Total return swap (78,710) Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 54,758 $ (20,554,877) --------------------------------------------------------------------------------------------------------------- Net realized and unrealized loss on investments, futures contracts, total return swap and foreign currency transactions $ (10,049,580) --------------------------------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $ (8,745,127) =============================================================================================================== * Class B shares converted to Class A shares on November 10, 2014. The accompanying notes are an integral part of these financial statements. 26 Pioneer Global Equity Fund | Annual Report | 8/31/15 Statements of Changes in Net Assets -------------------------------------------------------------------------------------------- Year Ended Year Ended 8/31/15 8/31/14 -------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income $ 1,304,453 $ 3,470,519 Net realized gain on investments, futures contracts, total return swap, written options, and foreign currency transactions 10,505,297 21,338,272 Change in net unrealized appreciation (depreciation) on investments, futures contracts, total return swap and foreign currency transactions (20,554,877) 11,183,577 -------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from operations $ (8,745,127) $ 35,992,368 -------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.38 and $0.20 per share, respectively) $ (2,165,744) $ (1,074,448) Class B* ($0.00 and $0.07 per share, respectively) -- (14,217) Class C ($0.30 and $0.10 per share, respectively) (252,529) (57,648) Class Y ($0.45 and $0.25 per share, respectively) (2,272,661) (1,568,569) -------------------------------------------------------------------------------------------- Total distributions to shareowners $ (4,690,934) $ (2,714,882) -------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: (a) Net proceeds from sale or exchange of shares $121,389,969 $ 14,621,595 Reinvestment of distributions 2,627,476 1,128,095 Cost of shares repurchased (97,010,855) (35,112,389) -------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from Fund share transactions $ 27,006,590 $ (19,362,699) -------------------------------------------------------------------------------------------- Net increase in net assets $ 13,570,529 $ 13,914,787 NET ASSETS: Beginning of year $157,520,681 $ 143,605,894 -------------------------------------------------------------------------------------------- End of year $171,091,210 $ 157,520,681 -------------------------------------------------------------------------------------------- Undistributed net investment income $ 1,034,603 $ 3,778,748 ============================================================================================ * Class B shares converted to Class A shares on November 10, 2014. (a) At August 31, 2015 Pioneer Asset Allocation Trust owed 30.3% of the value of outstanding shares of Pioneer Global Equity Fund. The accompanying notes are an integral part of these financial statements. Pioneer Global Equity Fund | Annual Report | 8/31/15 27 Statements of Changes in Net Assets (continued) -------------------------------------------------------------------------------------------- Year Ended Year Ended Year Ended Year Ended 8/31/15 8/31/15 8/31/14 8/31/14 Shares Amount Shares Amount -------------------------------------------------------------------------------------------- Class A Shares sold 1,540,016 $ 21,741,127 603,313 $ 7,775,776 Reinvestment of distributions 152,847 2,090,959 81,986 1,045,326 Less shares repurchased (1,217,019) (17,064,588) (798,782) (10,307,534) -------------------------------------------------------------------------------------------- Net increase (decrease) 475,844 $ 6,767,498 (113,483) $ (1,486,432) ============================================================================================ Class B* Shares sold or exchanged -- $ -- 10,609 $ 126,556 Reinvestment of distributions -- -- 1,102 13,921 Less shares repurchased (149,799) (2,044,742) (74,502) (944,641) -------------------------------------------------------------------------------------------- Net decrease (149,799) $ (2,044,742) (62,791) $ (804,164) ============================================================================================ Class C Shares sold 625,499 $ 8,578,097 158,541 $ 2,023,027 Reinvestment of distributions 17,966 241,637 4,350 54,723 Less shares repurchased (189,906) (2,624,849) (137,739) (1,776,869) -------------------------------------------------------------------------------------------- Net increase 453,559 $ 6,194,885 25,152 $ 300,881 ============================================================================================ Class K** Shares sold 4,271,583 $ 57,908,556 -- $ -- Reinvestment of distributions -- -- -- -- Less shares repurchased (105,521) (1,492,962) -- -- -------------------------------------------------------------------------------------------- Net increase 4,166,062 $ 56,415,594 -- $ -- ============================================================================================ Class R*** Shares sold 181,756 $ 2,526,092 -- $ -- Reinvestment of distributions -- -- -- -- Less shares repurchased (4,432) (62,198) -- -- -------------------------------------------------------------------------------------------- Net increase 177,324 $ 2,463,894 -- $ -- ============================================================================================ Class Y Shares sold 2,156,949 $ 30,636,097 349,580 $ 4,696,236 Reinvestment of distributions 21,508 294,880 1,106 14,125 Less shares repurchased (5,339,157) (73,721,516) (1,676,590) (22,083,345) -------------------------------------------------------------------------------------------- Net decrease (3,160,700) $ (42,790,539) (1,325,904) $ (17,372,984) ============================================================================================ * Class B shares converted to Class A shares on November 10, 2014. ** Class K shares commenced operations on December 31, 2014. *** Class R shares commenced operations on July 1, 2015. The accompanying notes are an integral part of these financial statements. 28 Pioneer Global Equity Fund | Annual Report | 8/31/15 Financial Highlights -------------------------------------------------------------------------------------------------------------- Year Year Year Year Year Ended Ended Ended Ended Ended 8/31/15 8/31/14 8/31/13 8/31/12 8/31/11 -------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 14.05 $ 11.31 $ 9.64 $ 9.27 $ 8.44 -------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.07 $ 0.27 $ 0.15 $ 0.17 $ 0.13 Net realized and unrealized gain (loss) on investments (0.74) 2.67 1.68 0.33 0.76 -------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.67) $ 2.94 $ 1.83 $ 0.50 $ 0.89 -------------------------------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.38) $ (0.20) $ (0.16) $ (0.13) $ (0.06) -------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (1.05) $ 2.74 $ 1.67 $ 0.37 $ 0.83 -------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 13.00 $ 14.05 $ 11.31 $ 9.64 $ 9.27 ============================================================================================================== Total return* (4.88)% 26.13% 19.17% 5.50% 10.48% Ratio of net expenses to average net assets 1.30% 1.30% 1.30% 1.30% 1.30% Ratio of net investment income (loss) to average net assets 0.60% 2.01% 1.35% 1.71% 1.23% Portfolio turnover rate 109% 121% 160% 152% 194% Net assets, end of period (in thousands) $77,115 $76,638 $62,996 $56,970 $60,701 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 1.50% 1.56% 1.67% 1.72% 1.67% Net investment income (loss) to average net assets 0.40% 1.75% 0.98% 1.29% 0.86% ============================================================================================================== * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. The accompanying notes are an integral part of these financial statements. Pioneer Global Equity Fund | Annual Report | 8/31/15 29 Financial Highlights (continued) ---------------------------------------------------------------------------------------------------------------- Year Year Year Year Year Ended Ended Ended Ended Ended 8/31/15 8/31/14 8/31/13 8/31/12 8/31/11 ---------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 13.78 $ 11.11 $ 9.47 $ 9.09 $ 8.31 ---------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ (0.08)(a) $ 0.14 $ 0.05 $ 0.10 $ 0.04 Net realized and unrealized gain (loss) on investments (0.68) 2.63 1.66 0.31 0.74 ---------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.76) $ 2.77 $ 1.71 $ 0.41 $ 0.78 ---------------------------------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.30) $ (0.10) $ (0.07) $ (0.03) $ -- ---------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (1.06) $ 2.67 $ 1.64 $ 0.38 $ 0.78 ---------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 12.72 $ 13.78 $ 11.11 $ 9.47 $ 9.09 ================================================================================================================ Total return* (5.60)% 24.98% 18.11% 4.56% 9.39% Ratio of net expenses to average net assets 2.05% 2.20% 2.20% 2.20% 2.20% Ratio of net investment income (loss) to average net assets (0.14)% 1.13% 0.45% 0.82% 0.35% Portfolio turnover rate 109% 121% 160% 152% 194% Net assets, end of period (in thousands) $13,552 $ 8,427 $ 6,516 $ 5,682 $ 6,439 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 2.21% 2.35% 2.51% 2.53% 2.48% Net investment income (loss) to average net assets (0.30)% 0.98% 0.14% 0.49% 0.07% ================================================================================================================ * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. (a) The amount shown for a share outstanding does not correspond with net investment income on the Statement of Operations for the period due to timing of the sales and repurchase of shares. The accompanying notes are an integral part of these financial statements. 30 Pioneer Global Equity Fund | Annual Report | 8/31/15 -------------------------------------------------------------------------------- 12/31/14 to 8/31/15 -------------------------------------------------------------------------------- Class K Net asset value, beginning of period $ 13.51 -------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.11 Net realized and unrealized gain (loss) on investments (0.59) -------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.48) -------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ -- -------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.48) -------------------------------------------------------------------------------- Net asset value, end of period $ 13.03 ================================================================================ Total return* (3.55)%*** Ratio of net expenses to average net assets 0.79%** Ratio of net investment income (loss) to average net assets 1.44%** Portfolio turnover rate 109% Net assets, end of period (in thousands) $ 54,305 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 0.95%** Net investment income (loss) 1.28%** ================================================================================ * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period. ** Annualized. *** Not annualized. The accompanying notes are an integral part of these financial statements. Pioneer Global Equity Fund | Annual Report | 8/31/15 31 Financial Highlights (continued) -------------------------------------------------------------------------------- 7/1/15 to 8/31/15 -------------------------------------------------------------------------------- Class R Net asset value, beginning of period $ 14.08 -------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.00(a) Net realized and unrealized gain (loss) on investments (1.09) -------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (1.09) -------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ -- -------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (1.09) -------------------------------------------------------------------------------- Net asset value, end of period $ 12.99 ================================================================================ Total return* (7.74)%*** Ratio of net expenses to average net assets 1.38%** Ratio of net investment income (loss) to average net assets 0.25%** Portfolio turnover rate 109% Net assets, end of period (in thousands) $ 2,304 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 1.55%** Net investment income (loss) to average net assets 0.08%** ================================================================================ * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period. ** Annualized. *** Not annualized. (a) Amount rounds to less than $0.01 or ($0.01) per share. The accompanying notes are an integral part of these financial statements. 32 Pioneer Global Equity Fund | Annual Report | 8/31/15 -------------------------------------------------------------------------------------------------------------- Year Year Year Year Year Ended Ended Ended Ended Ended 8/31/15 8/31/14 8/31/13 8/31/12 8/31/11 -------------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 14.12 $ 11.37 $ 9.69 $ 9.32 $ 8.49 -------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.01 $ 0.37 $ 0.20 $ 0.21 $ 0.18 Net realized and unrealized gain (loss) on investments (0.62) 2.63 1.69 0.34 0.76 -------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.61) $ 3.00 $ 1.89 $ 0.55 $ 0.94 -------------------------------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.45) $ (0.25) $ (0.21) $ (0.18) $ (0.11) -------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (1.06) $ 2.75 $ 1.68 $ 0.37 $ 0.83 -------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 13.06 $ 14.12 $ 11.37 $ 9.69 $ 9.32 ============================================================================================================== Total return* (4.48)% 26.66% 19.75% 6.09% 10.96% Ratio of net expenses to average net assets 0.80% 0.80% 0.80% 0.80% 0.80% Ratio of net investment income (loss) to average net assets 0.85% 2.58% 1.85% 2.22% 1.74% Portfolio turnover rate 109% 121% 160% 152% 194% Net assets, end of period (in thousands) $23,815 $70,384 $71,726 $60,214 $59,927 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 0.96% 0.95% 1.00% 0.97% 0.95% Net investment income (loss) to average net assets 0.69% 2.43% 1.65% 2.05% 1.59% ============================================================================================================== * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period. The accompanying notes are an integral part of these financial statements. Pioneer Global Equity Fund | Annual Report | 8/31/15 33 Notes to Financial Statements | 8/31/15 1. Organization and Significant Accounting Policies Pioneer Global Equity Fund (the Fund), is one of five portfolios comprising Pioneer Series Trust V, a Delaware statutory trust. The Fund is registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The Fund commenced operations on December 15, 2005. The Fund's investment objective is to seek long-term capital growth. The Fund offers five classes of shares designated as Class A, Class C, Class K, Class R and Class Y shares. Class K shares commenced operations on December 31, 2014. Class R shares commenced operations on July 1, 2015. Class B shares were converted to Class A shares as of the close of business on November 10, 2014. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different rates of class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends from net investment income earned by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board of Trustees the flexibility to specify either per-share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per-share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Each share class has exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. There is no distribution plan for Class Y shares. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gain or loss on investments during the reporting period. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements: 34 Pioneer Global Equity Fund | Annual Report | 8/31/15 A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Fund is computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. In computing the net asset value, securities that have traded on an exchange are valued using the last sale price on the principal exchange where they are traded. Securities that have not traded on the date of valuation, or securities for which sale prices are not available, generally are valued using the mean between the last bid and asked prices. Shares of money market mutual funds are valued at such funds' net asset value. Cash may include overnight time deposits at approved financial institutions. The Fund invests primarily in securities of non-U.S. issuers. The principal exchanges and markets for such securities have closing times prior to the close of the NYSE. However, the value of these securities may be influenced by changes in global markets occurring after the closing times of the local exchanges and markets up to the time the Fund determines its net asset value. Consequently, the Board of Trustees of the Fund has determined that daily adjustments to the valuation of securities of non-U.S. issuers by utilizing an independent pricing service that supplies an appropriate fair value factor is appropriate for the Fund. Securities for which independent pricing services are unable to supply prices or for which market prices and/or quotations are not readily available or are considered to be unreliable are valued by a fair valuation team comprised of certain personnel of Pioneer Investment Management, Inc. (PIM), the Fund's investment adviser, pursuant to procedures adopted by the Fund's Board of Trustees. PIM's fair valuation team uses fair value methods approved by the Valuation Committee of the Board of Trustees. Inputs used when applying fair value methods to value a security may include credit ratings, the financial condition of the company, current market conditions and comparable securities. The Fund may use fair value methods if it is determined that a significant event has occurred after the close of the exchange or market on which the security trades and prior to the determination of the Fund's net asset value. Examples of a significant event might include political or economic news, corporate restructurings, natural disasters, terrorist activity or trading halts. Thus, the valuation of the Fund's securities may differ significantly from exchange prices and such differences could be material. PIM's fair valuation team is responsible for monitoring developments that may impact fair valued securities and for discussing and assessing fair values on an ongoing basis, and at least quarterly, with the Valuation Committee of the Board of Trustees. Pioneer Global Equity Fund | Annual Report | 8/31/15 35 At August 31, 2015, no securities were valued using fair value methods (other than securities valued using prices supplied by independent pricing services or broker-dealers). B. Investment Income and Transactions Dividend income is recorded on the ex-dividend date except that certain dividends from foreign securities where the ex-dividend date may have passed are recorded as soon as the Fund becomes aware of the ex-dividend data in the exercise of reasonable diligence. Interest income is recorded on the accrual basis. Dividend and interest income are reported net of unrecoverable foreign taxes withheld at the applicable country rates. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. C. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no provision for federal income taxes is required. As of August 31, 2015, the Fund did not accrue any interest or penalties with respect to uncertain tax positions, which, if applicable, would be recorded as an income tax expense in the Statement of Operations. Tax returns filed within the prior three years are subject to examination by Federal and State tax authorities. In addition to the requirements of the Internal Revenue Code, the Fund may also be required to pay local taxes on the recognition of capital gains and/or the repatriation of foreign currencies in certain countries. During the year ended August 31, 2015, the Fund paid no such taxes. In determining the daily net asset value, the Fund estimates the reserve for such taxes, if any, associated with investments in certain countries. The estimated reserve for the capital gains is based on the net unrealized appreciation on certain portfolio securities, the holding period of such securities and the related tax rates, tax loss carryforward (if applicable) and other such factors. As of August 31, 2015, the Fund had $113,048 in reserve related to capital gains. The amount and character of income and capital gain distributions to shareowners are determined in accordance with federal income tax rules, which may differ from U.S. generally accepted accounting principles. Distributions in excess of net investment income or net realized gains are temporary overdistributions for financial statement purposes resulting from differences in the recognition or classification of income or distributions for 36 Pioneer Global Equity Fund | Annual Report | 8/31/15 financial statement and tax purposes. Capital accounts within the financial statements are adjusted for permanent book/tax differences to reflect tax character, but are not adjusted for temporary differences. At August 31, 2015, the Fund reclassified $642,336 to increase undistributed net investment income and $642,336 to decrease accumulated net realized loss on investments, futures contracts, swap contracts and foreign currency transactions to reflect permanent book/tax differences. These adjustments have no impact on net assets or the results of operations. At August 31, 2015, the Fund had a net capital loss carryforward of $16,155,081, which will expire in 2016 if not utilized. During the year ended August 31, 2015, a capital loss carryforward of $9,989,169 was utilized to offset net realized gains by the Fund. The tax character of distributions during the years ended August 31, 2015 and August 31, 2014 were as follows: ---------------------------------------------------------------------------- 2015 2014 ---------------------------------------------------------------------------- Distributions paid from: Ordinary income $4,690,934 $2,714,882 ---------------------------------------------------------------------------- Total $4,690,934 $2,714,882 ============================================================================ The following shows the components of distributable earnings on a federal income tax basis at August 31, 2015: ---------------------------------------------------------------------------- 2015 ---------------------------------------------------------------------------- Distributable earnings: Undistributed ordinary income $ 1,034,603 Capital loss carryforward (16,155,081) Net unrealized appreciation 3,369,985 ---------------------------------------------------------------------------- Total $(11,750,493) ============================================================================ The difference between book-basis and tax-basis net unrealized appreciation is attributable to the tax deferral of losses on wash sales. D. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), earned $19,487 in underwriting commissions on the sale of Class A shares during the year ended August 31, 2015. Pioneer Global Equity Fund | Annual Report | 8/31/15 37 E. Foreign Currency Translation The books and records of the Fund are maintained in U.S. dollars. Amounts denominated in foreign currencies are translated into U.S. dollars using current exchange rates. Net realized gains and losses on foreign currency transactions, if any, represent, among other things, the net realized gains and losses on foreign currency contracts, disposition of foreign currencies and the difference between the amount of income accrued and the U.S. dollars actually received. Further, the effects of changes in foreign currency exchange rates on investments are not segregated in the Statement of Operations from the effects of changes in the market price of those securities but are included with the net realized and unrealized gain or loss on investments. F. Forward Foreign Currency Contracts The Fund may enter into forward foreign currency contracts (contracts) for the purchase or sale of a specific foreign currency at a fixed price on a future date. All contracts are marked to market daily at the applicable exchange rates, and any resulting unrealized appreciation or depreciation are recorded in the Fund's financial statements. The Fund records realized gains and losses at the time a contract is offset by entry into a closing transaction or extinguished by delivery of the currency. Risks may arise upon entering into these contracts from the potential inability of counterparties to meet the terms of the contract and from unanticipated movements in the value of foreign currencies relative to the U.S. dollar (see Note 6). G. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on its respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A, Class C and Class R shares of the Fund, respectively (see Note 4). Class K and Class Y shares do not pay distribution fees. All expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services are allocated among the classes of shares based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner and at the same time, except that net investment income dividends to Class A, Class C, Class K, Class R and Class Y shares can reflect different transfer agent and distribution expense rates. 38 Pioneer Global Equity Fund | Annual Report | 8/31/15 H. Risks Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates and economic and political conditions. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making the Fund more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. The Fund's prospectus contains unaudited information regarding the Fund's principal risks. Please refer to that document when considering the Fund's principal risks. I. Futures Contracts The Fund may enter into futures transactions in order to attempt to hedge against changes in interest rates, securities prices and currency rates or to seek to increase total return. Futures contracts are types of derivatives. All futures contracts entered into by the Fund are traded on a futures exchange. Upon entering into a futures contract, the Fund is required to deposit with a broker an amount of cash or securities equal to the minimum "initial margin" requirements of the associated futures exchange. Subsequent payments for futures contracts ("variation margin") are paid or received by the Fund, depending on the daily fluctuation in the value of the contracts, and are recorded by the Fund as unrealized appreciation or depreciation. When the contract is closed, the Fund realizes a gain or loss equal to the difference between the opening and closing value of the contract as well as any fluctuation in foreign currency exchange rates where applicable. The use of futures contracts involves, to varying degrees, elements of market, interest rate, currency exchange rate and counterparty risks, which may exceed the amounts recognized by the Fund. Changes in value of the contracts may not directly correlate to the changes in value of the underlying securities. These risks may decrease the effectiveness of the Fund's hedging strategies and potentially result in a loss. The average value of contracts open during the year ended August 31, 2015 was $(939,606). There were no outstanding futures contracts open at August 31, 2015. J. Option Writing The Fund may write put and covered call options to seek to increase total return. When an option is written, the Fund receives a premium and becomes obligated to purchase or sell the underlying security at a fixed price, upon the exercise of the option. When the Fund writes an option, an amount equal to the premium received by the Fund is recorded as a liability and is subsequently adjusted to the current value of the option written. Premiums received from writing options that expire unexercised are treated by the Fund on the expiration date as realized gains from investments. The difference between the premium and the amount paid on effecting a closing purchase transaction, including brokerage commissions, is also treated as a realized Pioneer Global Equity Fund | Annual Report | 8/31/15 39 gain, or, if the premium is less than the amount paid for the closing purchase transaction, as a realized loss. If a call option is exercised, the premium is added to the proceeds from the sale of the underlying security in determining whether the Fund has realized a gain or loss. The Fund as writer of an option bears the market risk of an unfavorable change in the price of the security underlying the written option. The average value of written option contracts open during the year ended August 31, 2015 was $(4,521). There were no written options outstanding at August 31, 2015. Transactions in written options for the year ended August 31, 2015 are summarized as follows: ---------------------------------------------------------------------------- Number of Premium Contracts Paid ---------------------------------------------------------------------------- Options open at beginning of period -- $ -- Options opened (327) (138,765) Options exercised 129 55,134 Options closed 66 23,562 Options expired 132 60,069 ---------------------------------------------------------------------------- Options open at end of period -- $ -- ============================================================================ K. Total Return Swap Agreements The Fund may enter into a total return swap to attempt to manage and/or gain exposure to a security or market. Pursuant to a total return swap agreement, the Fund negotiates with a counterparty to exchange a periodic stream of payments. One party makes payments based on the total return of a reference asset (such as a security or a basket of securities or securities index), and in return receives fixed or floating rate interest payments. The total return of the reference asset typically includes appreciation or depreciation on the reference asset, plus any interest or dividend payments. To the extent that the total return of the reference asset exceeds or falls short of the offsetting interest rate obligation, the Fund will receive a payment from or make a payment to the counterparty. Total return swap contracts are marked-to-market daily using valuations supplied by independent sources and the change in value, if any, is recorded as unrealized appreciation or depreciation in the Statement of Assets and Liabilities. Payments received or made are recorded as realized gains or losses in the Statement of Operations. Total return swap contracts are subject to counterparty risk and unanticipated movements in value of exchange rates, interest rates, securities or the index. The average value of swap contracts open during the year ended August 31, 2015 was $101,227. There are no outstanding total return swap contracts at August 31, 2015. 40 Pioneer Global Equity Fund | Annual Report | 8/31/15 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredit, manages the Fund's portfolio. Management fees are calculated daily at the annual rate equal to 0.75% of the Fund's average daily net assets up to $500 million, 0.70% of the next $500 million of the Fund's average daily net assets and 0.65% of the Fund's average daily net assets over $1 billion. For the year ended August 31, 2015, the effective management fee (excluding waivers and/or assumption of expenses) was equivalent to 0.75% of the Fund's average daily net assets. PIM has contractually agreed to limit ordinary operating expenses of the Fund to the extent required to reduce Fund expenses to 1.30%, 2.20%, 0.80%, 1.55% and 0.80% of the average daily net assets attributable to Class A, Class C, Class K, Class R and Class Y shares, respectively. Fees waived and expenses reimbursed during the year ended August 31, 2015 are reflected on the Statement of Operations. These expense limitations are in effect through January 1, 2017. There can be no assurance that PIM will extend the expense limitation agreement for a class of shares beyond the date referred to above. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund as administrative reimbursements. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $47,183 in management fees, administrative costs and certain other reimbursements payable to PIM at August 31, 2015. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimburses PIMSS for out-of-pocket expenses incurred by PIMSS related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the year ended August 31, 2015, such out-of-pocket expenses by class of shares were as follows: -------------------------------------------------------------------------------- Shareholder Communications: -------------------------------------------------------------------------------- Class A $ 83,999 Class B 1,148 Class C 13,700 Class R 215 Class Y 17,360 -------------------------------------------------------------------------------- Total: $116,422 ================================================================================ Pioneer Global Equity Fund | Annual Report | 8/31/15 41 Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $30,199 in transfer agent fees and out-of-pocket reimbursements payable to PIMSS at August 31, 2015. 4. Distribution Plan The Fund has adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A, Class C and Class R shares. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Pursuant to the Plan, the Fund also pays PFD 1.00% of the average daily net assets attributable to Class C shares. The fee for Class C shares consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class C shares. Pursuant to the plan, the Fund further pays PFD 0.50% of the average daily net assets attributable to Class R shares held by such plans. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $4,483 in distribution fees payable to PFD at August 31, 2015. The Fund also has adopted a separate service plan for Class R shares (Service Plan). The Service Plan authorizes the Fund to pay securities dealers, plan administrators or other service organizations that agree to provide certain services to retirement plans or plan participants holding shares of the Fund a service fee of up to 0.25% of the Fund's average daily net assets attributable to Class R shares held by such plans. In addition, redemptions of each class of shares (except Class R or Class Y shares) may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within 12 months of purchase. Redemptions of Class C shares within 12 months of purchase are subject to a CDSC of 1.00%, based on the lower of cost or market value of shares being redeemed. Shares purchased as part of an exchange remain subject to any CDSC that applied to the original purchase of those shares. There is no CDSC for Class R or Class Y shares. Proceeds from the CDSCs are paid to PFD. For the year ended August 31, 2015, CDSCs in the amount of $689 were paid to PFD. 5. Expense Offsets Arrangements The Fund has entered into certain expense offset arrangements with PIMSS, which may result in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the year ended August 31, 2015, the Fund's expenses were not reduced under such arrangements. 42 Pioneer Global Equity Fund | Annual Report | 8/31/15 6. Forward Foreign Currency Contracts At August 31, 2015, the Fund had entered into various forward foreign currency contracts that obligate the Fund to deliver or take delivery of currencies at specified future maturity dates. Alternatively, prior to the settlement date of a forward foreign currency contract, the Fund may close out such contract by entering into an offsetting contract. The average value of forward foreign currency contracts open during the year ended August 31, 2015 was $(266,983). There were no outstanding forward foreign currency contracts at August 31, 2015. 7. Additional Disclosures about Derivative Instruments and Hedging Activities The effect of derivative instruments on the Statement of Operations for the year ended August 31, 2015 was as follows: -------------------------------------------------------------------------------------------- Change in Derivatives Not Realized Unrealized Accounted for as Gain or Appreciation or Hedging Instruments (Loss) on (Depreciation) Under Accounting Location of Gain or (Loss) Derivatives on Derivatives Standards Codification on Derivatives Recognized Recognized Recognized (ASC) 815 in Income in Income in Income -------------------------------------------------------------------------------------------- Forward Foreign Net realized gain (loss) on Currency Contracts forward foreign currency contracts and other assets and liabilities denominated in foreign currencies $ 40,615 Forward Foreign Change in unrealized appreciation Currency Contracts (depreciation) on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies $ (47,706) Total Return Swap Net realized gain (loss) on total return swap $1,303,407 Total Return Swap Change in unrealized appreciation (depreciation) on total return swap $ (78,710) Futures Contracts Net realized gain (loss) on futures contracts $ (717,347) Futures Contracts Change in net unrealized appreciation (depreciation) on futures contracts $ 147,350 Written Options Net realized gain (loss) on written options $ 61,281 8. Conversion of Class B shares As of the close of business on November 10, 2014 (the "Conversion Date"), all outstanding Class B shares of the Fund were converted to Class A shares. Pioneer Global Equity Fund | Annual Report | 8/31/15 43 Report of Independent Registered Public Accounting Firm To the Board of Trustees of Pioneer Series Trust V and the Shareowners of Pioneer Global Equity Fund: -------------------------------------------------------------------------------- We have audited the accompanying statement of assets and liabilities of Pioneer Global Equity Fund (the "Fund"), one of the portfolios constituting Pioneer Series Trust V, including the schedule of investments, as of August 31, 2015, and the related statement of operations for year then ended and the statements of changes in net assets and the financial highlights for each of the two years in the period then ended. These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. The financial highlights for the years ended August 31, 2013, 2012, and 2011 were audited by other auditors. Those auditors expressed an unqualified opinion on those financial statements and financial highlights in their report dated October 28, 2013. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of August 31, 2015, by correspondence with the custodian and brokers; where replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Pioneer Global Equity Fund as of August 31, 2015, the results of its operations for the year then ended, and the changes in its net assets and the financial highlights for each of the two years in the period then ended, in conformity with accounting principles generally accepted in the United States of America. /s/ Deloitte & Touche LLP Boston, Massachusetts October 28, 2015 44 Pioneer Global Equity Fund | Annual Report | 8/31/15 Additional Information (unaudited) PIM, the Fund's investment adviser, is currently an indirect, wholly-owned subsidiary of UniCredit. On April 23, 2015, UniCredit announced that it signed a preliminary and exclusive agreement with Banco Santander and affiliates of Warburg Pincus and General Atlantic (the "Private Equity Firms") with respect to Pioneer Investments ("Pioneer") and Santander Asset Management ("SAM") (the "Transaction"). The Transaction, as described in the UniCredit announcement, will entail the establishment of a holding company, with the name Pioneer Investments, to be owned by UniCredit (50%) and the Private Equity Firms (50% between them). The holding company will control Pioneer's U.S. operations, including the Adviser. The holding company also will own 66.7% of Pioneer's and SAM's combined operations outside the U.S., while Banco Santander will own directly the remaining 33.3% stake. The completion of the Transaction is subject to the signing of a definitive agreement, as well as certain regulatory and corporate approvals, and other conditions. Under the Investment Company Act of 1940, completion of the Transaction will cause the Fund's investment advisory agreement with the Adviser to terminate. In connection with the Transaction, the Fund's Board of Trustees will be asked to approve a new investment advisory agreement for the Fund. If approved by the Board, the Fund's new investment advisory agreement will be submitted to the shareholders of the Fund for their approval. For the year ended August 31, 2015, certain dividends paid by the Fund may be subject to a maximum tax rate of 15%, as provided for by the Jobs and Growth Tax Relief Reconciliation Act (the Act) of 2003. The Fund intends to designate up to the maximum amount of such dividends allowable under the Act, as taxed at a maximum rate of 15%. Complete information will be computed and reported in conjunction with your 2015 form 1099-DIV. The qualifying percentage of the Fund's ordinary income dividends for the purpose of the corporate dividends received deduction was 58.76%. Pioneer Global Equity Fund | Annual Report | 8/31/15 45 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Custodian and Sub-Administrator Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Deloitte & Touche LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Morgan, Lewis & Bockius LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at us.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at www.sec.gov. Trustees and Officers The Fund's Trustees and officers are listed below, together with their principal occupations during at least the past five years. Trustees who are interested persons of the Fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the Fund are referred to as Independent Trustees. Each of the Trustees serves as a Trustee of each of the 51 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the Fund is 60 State Street, Boston, Massachusetts 02109. The Statement of Additional Information of the Fund includes additional information about the Trustees and is available, without charge, upon request, by calling 1-800-225-6292. 46 Pioneer Global Equity Fund | Annual Report | 8/31/15 Independent Trustees ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Thomas J. Perna (64) Trustee since 2006. Private investor (2004-2008 and Director, Broadridge Chairman of the Board Serves until a successor 2013-present); Chairman (2008-2013) and Financial Solutions, Inc. and Trustee trustee is elected or earlier Chief Executive Officer (2008-2012), (investor communications retirement or removal. Quadriserv, Inc. (technology products for and securities processing securities lending industry); and Senior provider for financial Executive Vice President, The Bank of New services industry) (2009- York (financial and securities services) present); Director, (1986-2004) Quadriserv, Inc. (2005-2013); and Commissioner, New Jersey State Civil Service Commission (2011-present) ------------------------------------------------------------------------------------------------------------------------------------ David R. Bock (71) Trustee since 2005. Managing Partner, Federal City Capital Director of New York Trustee Serves until a successor Advisors (corporate advisory services Mortgage Trust trustee is elected or earlier company) (1997-2004 and 2008-present); (publicly-traded mortgage retirement or removal. Interim Chief Executive Officer, Oxford REIT) (2004-2009, Analytica, Inc. (privately-held research 2012-present); Director and consulting company) (2010); Executive of The Swiss Helvetia Vice President and Chief Financial Fund, Inc. (closed-end Officer, I-trax, Inc. (publicly traded fund) (2010-present); health care services company) Director of Oxford (2004-2007); and Executive Vice President Analytica, Inc. and Chief Financial Officer, Pedestal (2008-present); and Inc. (internet-based mortgage trading Director of Enterprise company) (2000-2002); Private consultant Community Investment, (1995-1997), Managing Director, Lehman Inc. (privately-held Brothers (investment banking firm) affordable housing (1992-1995); and Executive, The World finance company) Bank (1979-1992) (1985-2010) ------------------------------------------------------------------------------------------------------------------------------------ Benjamin M. Friedman (71) Trustee since 2008. William Joseph Maier Professor of Trustee, Mellon Trustee Serves until a successor Political Economy, Harvard University Institutional Funds trustee is elected or earlier (1972-present) Investment Trust and retirement or removal. Mellon Institutional Funds Master Portfolio (oversaw 17 portfolios in fund complex) (1989-2008) ------------------------------------------------------------------------------------------------------------------------------------ Pioneer Global Equity Fund | Annual Report | 8/31/15 47 Independent Trustees (continued) ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Margaret B.W. Graham (68) Trustee since 2005. Founding Director, Vice President and None Trustee Serves until a successor Corporate Secretary, The Winthrop Group, trustee is elected or earlier Inc. (consulting firm) (1982-present); retirement or removal. Desautels Faculty of Management, McGill University (1999-present); and Manager of Research Operations and Organizational Learning, Xerox PARC, Xerox's advance research center (1990-1994) ------------------------------------------------------------------------------------------------------------------------------------ Marguerite A. Piret (67) Trustee since 2005. President and Chief Executive Officer, Director of New America Trustee Serves until a successor Newbury, Piret & Company, Inc. High Income Fund, Inc. trustee is elected or earlier (investment banking firm) (1981-present) (closed-end investment retirement or removal. company) (2004-present); and Member, Board of Governors, Investment Company Institute (2000-2006) ------------------------------------------------------------------------------------------------------------------------------------ Fred J. Ricciardi (68) Trustee since 2014. Consultant (investment company services) None Trustee Serves until a successor (2012-present); Executive Vice President, trustee is elected or earlier BNY Mellon (financial and investment retirement or removal. company services) (1969-2012); Director, BNY International Financing Corp. (financial services) (2002-2012); and Director, Mellon Overseas Investment Corp. (financial services) (2009-2012) ------------------------------------------------------------------------------------------------------------------------------------ 48 Pioneer Global Equity Fund | Annual Report | 8/31/15 Interested Trustee ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Kenneth J. Taubes (57)* Trustee since 2014. Director and Executive Vice President None Trustee Serves until a successor (since 2008) and Chief Investment trustee is elected or earlier Officer, U.S. (since 2010) of PIM-USA; retirement or removal. Executive Vice President of Pioneer (since 2008); Executive Vice President of Pioneer Institutional Asset Management, Inc. (since 2009); and Portfolio Manager of Pioneer (since 1999) ------------------------------------------------------------------------------------------------------------------------------------ * Mr. Taubes is an Interested Trustee because he is an officer of the Fund's investment adviser and certain of its affiliates. Pioneer Global Equity Fund | Annual Report | 8/31/15 49 Advisory Trustee ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Lorraine Monchak (59)** Advisory Trustee since 2014. Chief Investment Officer, 1199 SEIU Funds None Advisory Trustee (healthcare workers union pension funds) (2001-present); Vice President-International Investments Group, American International Group, Inc. (insurance company) (1993-2001); Vice President Corporate Finance and Treasury Group, Citibank, N.A.(1980-1986 and 1990- 1993); Vice President-Asset/Liability Management Group, Federal Farm Funding Corporation (government-sponsored issuer of debt securities) (1988-1990); Mortgage Strategies Group, Shearson Lehman Hutton, Inc. (investment bank) (1987-1988); and Mortgage Strategies Group, Drexel Burnham Lambert, Ltd. (investment bank) (1986-1987) ------------------------------------------------------------------------------------------------------------------------------------ ** Ms. Monchak is a non-voting advisory trustee. 50 Pioneer Global Equity Fund | Annual Report | 8/31/15 Fund Officers ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Lisa M. Jones (53) Since 2014. Serves at the Chair, Director, CEO and President of None President and discretion of the Board. Pioneer Investment Management-USA (since Chief Executive Officer September 2014); Chair, Director, CEO and President of Pioneer Investment Management, Inc. (since September 2014); Chair, Director, CEO and President of Pioneer Funds Distributor, Inc. (since September 2014); Chair, Director, CEO and President of Pioneer Institutional Asset Management, Inc. (since September 2014); and Chair, Director, and CEO of Pioneer Investment Management Shareholder Services, Inc. (since September 2014); Managing Director, Morgan Stanley Investment Management (2010-2013); and Director of Institutional Business, CEO of International, Eaton Vance Management (2005-2010) ------------------------------------------------------------------------------------------------------------------------------------ Christopher J. Kelley (50) Since 2005. Serves at the Vice President and Associate General None Secretary and Chief discretion of the Board. Counsel of Pioneer since January 2008; Legal Officer Secretary and Chief Legal Officer of all of the Pioneer Funds since June 2010; Assistant Secretary of all of the Pioneer Funds from September 2003 to May 2010; and Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 ------------------------------------------------------------------------------------------------------------------------------------ Carol B. Hannigan (54) Since 2010. Serves at the Fund Governance Director of Pioneer since None Assistant Secretary discretion of the Board. December 2006 and Assistant Secretary of all the Pioneer Funds since June 2010; Manager-Fund Governance of Pioneer from December 2003 to November 2006; and Senior Paralegal of Pioneer from January 2000 to November 2003 ------------------------------------------------------------------------------------------------------------------------------------ Thomas Reyes (52) Since 2010. Serves at the Senior Counsel of Pioneer since May 2013 None Assistant Secretary discretion of the Board. and Assistant Secretary of all the Pioneer Funds since June 2010; and Counsel of Pioneer from June 2007 to May 2013 ------------------------------------------------------------------------------------------------------------------------------------ Mark E. Bradley (55) Since 2008. Serves at the Vice President-Fund Treasury of Pioneer; None Treasurer and Chief discretion of the Board. Treasurer of all of the Pioneer Funds Financial since March 2008; Deputy Treasurer of and Accounting Officer Pioneer from March 2004 to February 2008; and Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008 ------------------------------------------------------------------------------------------------------------------------------------ Pioneer Global Equity Fund | Annual Report | 8/31/15 51 Fund Officers (continued) ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Luis I. Presutti (50) Since 2005. Serves at the Director-Fund Treasury of Pioneer; and None Assistant Treasurer discretion of the Board. Assistant Treasurer of all of the Pioneer Funds ------------------------------------------------------------------------------------------------------------------------------------ Gary Sullivan (57) Since 2005. Serves at the Fund Accounting Manager-Fund Treasury of None Assistant Treasurer discretion of the Board. Pioneer; and Assistant Treasurer of all of the Pioneer Funds ------------------------------------------------------------------------------------------------------------------------------------ David F. Johnson (35) Since 2009. Serves at the Fund Administration Manager-Fund Treasury None Assistant Treasurer discretion of the Board. of Pioneer since November 2008; Assistant Treasurer of all of the Pioneer Funds since January 2009; and Client Service Manager-Institutional Investor Services at State Street Bank from March 2003 to March 2007 ------------------------------------------------------------------------------------------------------------------------------------ Jean M. Bradley (62) Since 2010. Serves at the Chief Compliance Officer of Pioneer and None Chief Compliance Officer discretion of the Board. of all the Pioneer Funds since March 2010; Chief Compliance Officer of Pioneer Institutional Asset Management, Inc. since January 2012; Chief Compliance Officer of Vanderbilt Capital Advisors, LLC since July 2012: Director of Adviser and Portfolio Compliance at Pioneer since October 2005; and Senior Compliance Officer for Columbia Management Advisers, Inc. from October 2003 to October 2005 ------------------------------------------------------------------------------------------------------------------------------------ Kelly O'Donnell (44) Since 2006. Serves at the Director-Transfer Agency Compliance of None Anti-Money Laundering discretion of the Board. Pioneer and Anti-Money Laundering Officer Officer of all the Pioneer Funds since 2006 ------------------------------------------------------------------------------------------------------------------------------------ 52 Pioneer Global Equity Fund | Annual Report | 8/31/15 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Write to us: -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: us.pioneerinvestments.com This report must be preceded or accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. [LOGO] PIONEER Investments(R) Pioneer Investment Management, Inc. 60 State Street Boston, MA 02109 us.pioneerinvestments.com Securities offered through Pioneer Funds Distributor, Inc. 60 State Street, Boston, MA 02109 Underwriter of Pioneer Mutual Funds, Member SIPC (C) 2015 Pioneer Investments 19431-09-1015 Pioneer High Income Municipal Fund -------------------------------------------------------------------------------- Annual Report | August 31, 2015 -------------------------------------------------------------------------------- Ticker Symbols: Class A PIMAX Class C HICMX Class Y HIMYX [LOGO] PIONEER Investments(R) visit us: us.pioneerinvestments.com Table of Contents President's Letter 2 Portfolio Management Discussion 4 Portfolio Summary 8 Prices and Distributions 9 Performance Update 10 Comparing Ongoing Fund Expenses 13 Schedule of Investments 15 Financial Statements 25 Notes to Financial Statements 32 Report of Independent Registered Public Accounting Firm 39 Trustees, Officers and Service Providers 41 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 1 President's Letter Dear Shareholder, In the second half of 2015, two main issues have been dominating the attention of global investors and policymakers alike, and shaping the current investment environment: The Federal Reserve System's (the Fed's) deliberations over when to begin normalizing interest rates in the U.S., and the increasing divergence in economic activity around the globe. As 2015 began, market expectations were that the Fed would likely begin raising interest rates by the middle of the year, but a sluggish gross domestic product report in the first calendar quarter as well as relatively benign inflation and wage growth contributed to the Fed's taking a more cautionary approach and delaying the start of its rate-hike cycle. At the same time, however, the U.S. labor market has continued its robust improvement, moving the Fed closer to declaring victory on one of its main monetary policy objectives -- full employment. Meanwhile, global economic activity has continued to diverge, with developed economies experiencing above-trend growth and most emerging markets economies lagging the rest of the world. The slower pace of economic activity in the emerging markets has been most evident in China, as the country's economy continues to undergo a long, potentially painful adjustment from investment-led growth to consumption-oriented growth. This divergence in global economic cycles is likely to continue for some time, and we would expect an increased level of volatility as global capital markets and policymakers adjust. Pioneer Investments believes that investors in today's environment can potentially benefit from the consistent and disciplined investment approach we have used since our founding in 1928. We focus on identifying value across global markets using proprietary research, careful risk management, and a long-term perspective. Our ongoing goal is to produce compelling returns consistent with the stated objectives of our investment products, and with our shareowners' expectations. We believe our shareowners can benefit from the experience and tenure of our investment teams as well as the insights generated from our extensive research process. 2 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 As always, and particularly during times of market uncertainty, we encourage you to work with your financial advisor to develop an overall investment plan that addresses both your short- and long-term goals, and to implement such a plan in a disciplined manner. We greatly appreciate your trust in us in the past and look forward to continuing to serve you in the future. Sincerely, /s/ Lisa M. Jones Lisa M. Jones President and CEO Pioneer Investment Management USA, Inc. Any information in this shareowner report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 3 Portfolio Management Discussion | 8/31/15 High-yield municipal bonds outperformed most other domestic fixed-income asset classes during the 12-month period ended August 31, 2015. In the following interview, Jonathan Chirunga and David Eurkus discuss the factors that influenced the performance of Pioneer High Income Municipal Fund during the 12-month period. Mr. Chirunga, a vice president and a portfolio manager at Pioneer, manages the Fund along with Mr. Eurkus, Director of Municipals, a senior vice president and a portfolio manager at Pioneer. Q How did the Fund perform during the 12-month period ended August 31, 2015? A Pioneer High Income Municipal Fund's Class A shares returned 4.88% during the 12- month period ended August 31, 2015, while the Fund's benchmark, the Barclays High Yield Municipal Bond Index (the Barclays Index), returned -0.07%. During the same period, the average return of the 145 mutual funds in Lipper's High-Yield Municipal Debt Funds category was 3.88%, and the average return of the 194 mutual funds in Morningstar's High-Yield Municipal Funds category was 3.59%. Q How did you position the Fund's portfolio during the 12-month period ended August 31, 2015? A Throughout the 12 months, we continued the portfolio-restructuring program we began when the current management team took responsibility for the Fund in 2013, increasing the diversification* of the portfolio's investments, both by sector as well as by geographical region. As we did this, we further reduced the Fund's exposure to bonds backed by continuing care retirement securities, which had represented a major share of the Fund's invested assets back in 2013. During the period, we continued to emphasize owning project revenue bonds in the Fund's portfolio, while keeping a much lower exposure to general obligation bonds (G.O. bonds). At the end of the period, G.O. bonds represented slightly more than 3% of the Fund's total investment portfolio. The Fund's largest exposures by sector as of period end were to health care bonds (30% of the Fund's total investment portfolio), followed by special revenue bonds (nearly 26%), which include securities backed by revenues from tobacco lawsuit settlements, and then education bonds, which represented slightly less than 21% of the Fund's total investment portfolio. * Diversification does not assure a profit nor protect against loss. 4 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Q What types of investments or asset allocation decisions had the greatest effects on the Fund's benchmark-relative performance during the 12-month period ended August 31, 2015? A Strong credit research and security selection, the portfolio's overall diversification, and our emphasis on holding securities backed by project- specific revenue sources all factored into the Fund's good benchmark-relative performance during the period. Tobacco-revenue bonds, which are backed by proceeds from settlements of liability lawsuits against tobacco companies, performed very well during the 12-month period, and the Fund's significant exposure to such bonds provided strong support to benchmark-relative results. With regard to individual securities, the portfolio's holdings of bonds backed by revenues to correctional facilities in Otero County, New Mexico and Tensas Parish, Louisiana, also performed well and aided the Fund's benchmark-relative returns. In addition, the Fund's relative performance benefited from exposure to securities issued by the Esperanza Academy, a charter school in Pennsylvania, and debt backed by revenues to the Linden Ponds continuing care retirement community in Massachusetts. On the negative side, the most significant detractor from the Fund's benchmark-relative performance during the 12-month period was a large portfolio position in a security issued by the Philippi Municipal Building Commission for a small private university in West Virginia. It should be noted that although high-yield municipal bonds performed well over the full 12-month period, the asset class, and the Fund's performance, slumped into negative territory in the second calendar quarter of 2015 due to rising market interest rates. In addition, high-yield municipals struggled at times during the period because of the underperformance of debt securities issued by municipalities and institutions in the Commonwealth of Puerto Rico, which make up about 26% of the value of the securities in the Fund's Barclays Index benchmark. However, the portfolio's significant underweight to Puerto Rican bonds limited the damage to the Fund's performance and contributed positively to benchmark-relative results over the full 12-month period. Puerto Rican bonds represented just 2.6% of the Fund's total investment portfolio as of period end. The high-yield municipal market, including Puerto Rican bonds, did recover somewhat in August 2015, the final month of the period. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 5 Q Did you invest the Fund's portfolio in any derivative securities during the 12-month period ended August 31, 2015? A No, the Fund did not have any exposure to derivatives during the period. Q What factors affected the Fund's yield during the 12-month period ended August 31, 2015? A Although market interest rates were volatile during the period, especially in the second quarter of 2015 (April through June), the Fund's dividend remained relatively stable. The limited supply of new high-yield municipal bonds during the period helped the performance of the high-yield market and supported the current income levels the Fund received from its investments, which remained fairly consistent over the full 12 months. Q What is your investment outlook for the high-yield municipal market? A We believe high-yield municipal bonds should remain attractive and that they offer a good investment opportunity for appropriate investors. We believe the domestic economy should continue to grow modestly, outpacing weaker growth in most foreign markets. At the same time, we believe inflation is likely to remain muted and that interest rates should remain relatively stable, while the new-issue supply in the high-yield municipal market is likely to continue to fall short of investment demand. Such conditions would create an investment environment that should favor credit-sensitive debt securities, including high-yield municipal bonds. 6 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Please refer to the Schedule of Investments on pages 15-24 for a full listing of Fund securities. Investments in high-yield or lower rated securities are subject to greater-than- average price volatility, illiquidity and possibility of default. When interest rates rise, the prices of fixed-income securities in the Fund will generally fall. Conversely, when interest rates fall, the prices of fixed income securities in the fund will generally rise. Investments in the Fund are subject to possible loss due to the financial failure of issuers of underlying securities and their inability to meet their debt obligations. Prepayment risk is the chance that an issuer may exercise its right to prepay its security, if falling interest rates prompt the issuer to do so. Forced to reinvest the unanticipated proceeds at lower interest rates, the Fund would experience a decline in income and lose the opportunity for additional price appreciation. The value of municipal securities can be adversely affected by changes in financial condition of municipal issuers, lower revenues, and regulatory and political developments. The Fund is non-diversified, which means that it can invest a large percentage of its assets in the securities of any one or more issuers. This increases the Fund's potential risk exposure. The Fund may use derivatives, such as options, futures, inverse floating rate obligations, swaps, and others, which can be illiquid, may disproportionately increase losses, and have a potentially large impact on Fund performance. Derivatives may have a leveraging effect on the Fund. A portion of income may be subject to local, state, federal, and/or alternative minimum tax. Capital gains, if any, are subject to a capital gains tax. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. These risks may increase share price volatility. Before investing, consider the product's investment objectives, risks, charges and expenses. Contact your advisor or Pioneer Investments for a prospectus or summary prospectus containing this information. Read it carefully. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. Past performance is not a guarantee of future results. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 7 Portfolio Summary | 8/31/15 [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] Sector Distribution -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) Health 30.0% Special Revenues 25.9% Education 20.9% Pollution Control Revenue 8.3% Various Revenues 8.0% General Obligation 3.4% Transportation 2.4% Housing 0.7% Insured 0.2% Escrowed 0.2% 10 Largest Holdings -------------------------------------------------------------------------------- (As a percentage of total investment portfolio)* 1. City of Philippi West Virginia, Alderson-Broaddus College, 7.75%, 10/1/44 3.66% ----------------------------------------------------------------------------------------- 2. Sanger Industrial Development Corp., Texas Pellets, Inc., 8.0%, 7/1/38 3.12 ----------------------------------------------------------------------------------------- 3. Commonwealth of Puerto Rico, 8.0%, 7/1/35 2.55 ----------------------------------------------------------------------------------------- 4. Golden State Tobacco Securitization Corp., 5.75%, 6/1/47 2.09 ----------------------------------------------------------------------------------------- 5. Washington State Housing Finance Commission, Skyline at First Hill Project, 5.625%, 1/1/38 2.03 ----------------------------------------------------------------------------------------- 6. Pennsylvania Economic Development Financing Authority, US Airways Group Series B, 8.0%, 5/1/29 1.95 ----------------------------------------------------------------------------------------- 7. Tobacco Settlement Financing Corp., New Jersey, 5.0%, 6/1/41 1.92 ----------------------------------------------------------------------------------------- 8. Tobacco Settlement Financing Corp., Virginia, 5.0%, 6/1/47 1.90 ----------------------------------------------------------------------------------------- 9. TSASC, Inc., New York, Series 1, 5.125%, 6/1/42 1.53 ----------------------------------------------------------------------------------------- 10. Michigan Strategic Fund, CFP Michigan II LLC, Floating Rate Note, 3/1/40 1.51 ----------------------------------------------------------------------------------------- * This list excludes temporary cash investments and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 8 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Prices and Distributions | 8/31/15 Net Asset Value per Share -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Class 8/31/15 8/31/14 -------------------------------------------------------------------------------- A $7.22 $7.27 -------------------------------------------------------------------------------- C $7.22 $7.28 -------------------------------------------------------------------------------- Y $7.12 $7.18 -------------------------------------------------------------------------------- Distributions per Share: 9/1/14-8/31/15 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains -------------------------------------------------------------------------------- A $0.4010 $ -- $ -- -------------------------------------------------------------------------------- C $0.3456 $ -- $ -- -------------------------------------------------------------------------------- Y $0.4091 $ -- $ -- -------------------------------------------------------------------------------- Index Definitions -------------------------------------------------------------------------------- The Barclays High Yield Municipal Bond Index is an unmanaged measure of the performance of the high-yield municipal bond market. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. It is not possible to invest directly in an index. The index defined here pertains to the "Value of $10,000 Investment" and "Value of $5 Million Investment" charts shown on pages 10-12. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 9 Performance Update | 8/31/15 Class A Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class A shares of Pioneer High Income Municipal Fund at public offering price during the periods shown, compared to that of the Barclays High Yield Municipal Bond Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- Barclays Net Public High Yield Asset Offering Municipal Value Price Bond Period (NAV) (POP) Index -------------------------------------------------------------------------------- Life-of-Class (10/17/06) 2.67% 2.14% 3.92% 5 Years 4.11 3.14 5.63 1 Year 4.88 0.19 -0.07 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 0.90% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer High Income Barclays High Yield Municipal Fund Municipal Bond Index 10/06 $ 9,550 $10,000 8/07 $ 9,662 $10,076 8/08 $ 9,184 $ 9,635 8/09 $ 7,861 $ 8,750 8/10 $ 9,838 $10,682 8/11 $10,018 $11,051 8/12 $11,144 $12,752 8/13 $10,669 $12,253 8/14 $11,470 $14,060 8/15 $12,030 $14,050 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 4.50% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 10 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Performance Update | 8/31/15 Class C Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class C shares of Pioneer High Income Municipal Fund during the periods shown, compared to that of the Barclays High Yield Municipal Bond Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- Barclays High Yield Municipal If If Bond Period Held Redeemed Index -------------------------------------------------------------------------------- Life-of-Class (10/17/06) 1.83% 1.83% 3.92% 5 Years 3.35 3.35 5.63 1 Year 3.95 3.95 -0.07 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 1.66% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer High Income Barclays High Yield Municipal Fund Municipal Bond Index 10/06 $10,000 $10,000 8/07 $10,026 $10,076 8/08 $ 9,430 $ 9,635 8/09 $ 7,999 $ 8,750 8/10 $ 9,928 $10,682 8/11 $10,046 $11,051 8/12 $11,094 $12,752 8/13 $10,541 $12,253 8/14 $11,263 $14,060 8/15 $11,708 $14,050 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 11 Performance Update | 8/31/15 Class Y Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Class Y shares of Pioneer High Income Municipal Fund during the periods shown, compared to that of the Barclays High Yield Municipal Bond Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- Barclays Net High Yield Asset Municipal Value Bond Period (NAV) Index -------------------------------------------------------------------------------- Life-of-Class (10/17/06) 2.63% 3.92% 5 Years 4.27 5.63 1 Year 4.92 -0.07 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 0.71% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer High Income Barclays High Yield Municipal Fund Municipal Bond Index 10/06 $5,000,000 $5,000,000 8/07 $5,040,643 $5,037,963 8/08 $4,765,972 $4,817,672 8/09 $4,084,381 $4,374,981 8/10 $5,094,276 $5,340,982 8/11 $5,197,079 $5,525,277 8/12 $5,790,897 $6,376,035 8/13 $5,556,051 $6,126,737 8/14 $5,983,213 $7,029,878 8/15 $6,277,406 $7,024,878 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 12 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: 1. Divide your account value by $1,000 Example: an $8,600 account value (divided by) $1,000 = 8.6 2. Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer High Income Municipal Fund Based on actual returns from March 1, 2015, through August 31, 2015. -------------------------------------------------------------------------------- Share Class A C Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 Value on 3/1/15 -------------------------------------------------------------------------------- Ending Account Value $ 998.95 $ 993.88 $ 998.19 (after expenses) on 8/31/15 -------------------------------------------------------------------------------- Expenses Paid $ 4.48 $ 8.29 $ 3.58 During Period* -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 0.89%, 1.65% and 0.71% for Class A, Class C and Class Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/365 (to reflect the one-half year period). Pioneer High Income Municipal Fund | Annual Report | 8/31/15 13 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer High Income Municipal Fund Based on a hypothetical 5% return per year before expenses, reflecting the period from March 1, 2015, through August 31, 2015. -------------------------------------------------------------------------------- Share Class A C Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 Value on 3/1/15 -------------------------------------------------------------------------------- Ending Account Value $1,020.72 $1,016.89 $1,021.63 (after expenses) on 8/31/15 -------------------------------------------------------------------------------- Expenses Paid $ 4.53 $ 8.39 $ 3.62 During Period* -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 0.89%, 1.65% and 0.71% for Class A, Class C and Class Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/365 (to reflect the one-half year period). 14 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Schedule of Investments | 8/31/15 ------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ------------------------------------------------------------------------------------------------------- MUNICIPAL BONDS -- 98.4% (f) Alaska -- 0.2% 1,250,000 Northern Tobacco Securitization Corp., 5.0%, 6/1/46 $ 960,012 ------------------------------------------------------------------------------------------------------- Arizona -- 1.0% 1,000,000 The Industrial Development Authority of the County of Pima, Desert Heights Charter School, 7.0%, 5/1/34 $ 1,034,620 3,000,000 The Industrial Development Authority of the County of Pima, Desert Heights Charter School, 7.25%, 5/1/44 3,110,760 725,000 The Industrial Development Authority of the County of Pima, Legacy Transition Charter School, 8.5%, 7/1/39 895,194 ------------- $ 5,040,574 ------------------------------------------------------------------------------------------------------- California -- 13.6% 2,715,000 California County Tobacco Securitization Agency, Los Angeles County Securitization Corp., 5.6%, 6/1/36 $ 2,494,270 3,800,000 California County Tobacco Securitization Agency, Los Angeles County Securitization Corp., 5.7%, 6/1/46 3,415,326 6,755,000 California County Tobacco Securitization Agency, Merced County Tobacco Funding Corp., 5.25%, 6/1/45 5,457,770 5,040,000 California County Tobacco Securitization Agency, Sonoma County Securitization Corp., 5.125%, 6/1/38 4,237,884 1,880,000 California County Tobacco Securitization Agency, Sonoma County Securitization Corp., 5.25%, 6/1/45 1,534,118 1,300,000 California Municipal Finance Authority, John Adams Academics Project Series A, 5.25%, 10/1/45 1,302,730 6,300,000 California Municipal Finance Authority, Santa Rosa Academy, 6.0%, 7/1/42 6,575,184 3,000,000 California School Finance Authority, Classical Academies Project Series A, 7.375%, 10/1/43 3,491,340 830,000 California School Finance Authority, View Park Elementary School, 5.625%, 10/1/34 843,820 1,475,000 California School Finance Authority, View Park Elementary School, 5.875%, 10/1/44 1,508,232 1,000,000 California School Finance Authority, View Park Elementary School, 6.0%, 10/1/49 1,027,630 3,230,000 California School Finance Authority, View Park High School Series A, 7.125%, 10/1/48 3,575,416 1,560,000 California Statewide Communities Development Authority, California Baptist University, 6.125%, 11/1/33 1,685,050 4,030,000 California Statewide Communities Development Authority, California Baptist University, 6.375%, 11/1/43 4,393,224 2,000,000 California Statewide Communities Development Authority, Lancer Educational Housing, 7.5%, 6/1/42 2,198,200 315,559 California Statewide Communities Development Authority, Micrology Holdings Project, 9.0%, 12/1/38 (c) 3 12,500,000 Golden State Tobacco Securitization Corp., 5.75%, 6/1/47 10,672,375 5,130,000 Golden State Tobacco Securitization Corp., 6/1/37 4,206,908 The accompanying notes are an integral part of these financial statements. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 15 Schedule of Investments | 8/31/15 (continued) ------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ------------------------------------------------------------------------------------------------------- California -- (continued) 2,500,000 Pittsburg Unified School District, 9/1/41 (e) $ 707,475 1,925,000 Pittsburg Unified School District, 9/1/42 (e) 518,961 3,500,000 River Islands Public Financing Authority, 5.5%, 9/1/45 3,602,830 6,000,000 Tobacco Securitization Authority of Southern California, San Diego County Securitization Corp., 5.0%, 6/1/37 5,166,360 2,800,000 Tobacco Securitization Authority of Southern California, San Diego County Securitization Corp., 5.125%, 6/1/46 2,331,700 ------------- $ 70,946,806 ------------------------------------------------------------------------------------------------------- Colorado -- 3.7% 2,860,000 Castle Oaks Metropolitan District No 3, 6.25%, 12/1/44 (g) $ 2,825,594 1,000,000 Colorado Educational & Cultural Facilities Authority, Charter School University, 5.0%, 12/15/45 980,050 2,000,000 Colorado Educational & Cultural Facilities Authority, Rocky Mountain Classical Charter School, 8.0%, 9/1/43 2,114,680 5,000,000 Colorado Educational & Cultural Facilities Authority, Rocky Mountain Classical Charter School, 8.125%, 9/1/48 5,308,750 8,000,000 Kremmling Memorial Hospital District, 7.125%, 12/1/45 6,581,120 1,500,000 Promenade Castle Rock Metropolitan District No 1 Series A, 5.75%, 12/1/39 (g) 1,470,075 ------------- $ 19,280,269 ------------------------------------------------------------------------------------------------------- Connecticut -- 0.5% 2,640,000 Town of Hamden Connecticut, Whitney Center Project Series A, 7.75%, 1/1/43 $ 2,751,434 ------------------------------------------------------------------------------------------------------- District of Columbia -- 0.9% 735,000 District of Columbia Tobacco Settlement Financing Corp., 6.75%, 5/15/40 $ 734,926 4,000,000 District of Columbia, Provident Group Howard Properties LLC, 5.0%, 10/1/45 3,785,880 ------------- $ 4,520,806 ------------------------------------------------------------------------------------------------------- Florida -- 2.9% 5,000,000 Alachua County Health Facilities Authority, Terraces Bonita Springs Project Series A, 8.125%, 11/15/46 $ 5,859,950 5,000,000 Capital Trust Agency, Inc., Million Air One LLC, 7.75%, 1/1/41 4,746,350 1,820,000 County of Liberty Florida, Twin Oaks Project 8.25%, 7/1/28 272,090 The accompanying notes are an integral part of these financial statements. 16 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ------------------------------------------------------------------------------------------------------- Florida -- (continued) 1,000,000 Florida Development Finance Corp., Tuscan Isle Obligated Group, 7.0%, 6/1/35 $ 1,026,120 3,000,000 Florida Development Finance Corp., Tuscan Isle Obligated Group, 7.0%, 6/1/45 3,050,370 ------------- $ 14,954,880 ------------------------------------------------------------------------------------------------------- Hawaii -- 0.2% 1,000,000 State of Hawaii Department of Budget & Finance, Craigside Project Series A, 9.0%, 11/15/44 $ 1,252,790 ------------------------------------------------------------------------------------------------------- Illinois -- 3.9% 526,959 Illinois Finance Authority, Clare Oaks Project Series C2, 11/15/52 (e) $ 144,208 526,959 Illinois Finance Authority, Clare Oaks Project Series C3 11/15/52 (e) 90,626 2,634,795 Illinois Finance Authority, Clare Oaks Project Series C1, 11/15/52 (e) 90,795 485,000 Illinois Finance Authority, Clare Oaks Project Series A3, 7.0%, 11/15/17 485,141 1,250,000 Illinois Finance Authority, Norwegian American Hospital, Inc., 7.625%, 9/15/28 1,382,725 4,845,000 Illinois Finance Authority, Norwegian American Hospital, Inc., 7.75%, 9/15/38 5,551,837 4,213,653 4.00 Illinois Finance Authority, Clare Oaks Project Series E, Floating Rate Note, 11/15/52 (Step) 2,693,704 2,520,000 Southwestern Illinois Development Authority, Village of Sauget, 5.625%, 11/1/26 2,318,602 485,000 Southwestern Illinois Development Authority, St Claire County Comprehensive Behavioral Health Center, 6.2%, 6/1/17 494,622 7,020,000 Southwestern Illinois Development Authority, St Claire County Comprehensive Behavioral Health Center, 6.625%, 6/1/37 7,132,320 ------------- $ 20,384,580 ------------------------------------------------------------------------------------------------------- Indiana -- 2.9% 1,750,000 City of Carmel Indiana, Barrington Carmel Project Series A, 7.0%, 11/15/32 $ 1,934,905 2,000,000 City of Carmel Indiana, Barrington Carmel Project Series A, 7.125%, 11/15/42 2,218,320 2,000,000 City of Carmel Indiana, Barrington Carmel Project Series A, 7.125%, 11/15/47 2,213,780 3,500,000 City of Crown Point Indiana, Wittenberg Lutheran Project Series A, 8.0%, 11/15/39 3,932,915 4,000,000 Vigo County Hospital Authority, Union Hospital, Inc., 8.0%, 9/1/41 4,780,080 ------------- $ 15,080,000 ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 17 Schedule of Investments | 8/31/15 (continued) ------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ------------------------------------------------------------------------------------------------------- Iowa -- 1.0% 105,000 Iowa Tobacco Settlement Authority, 5.5%, 6/1/42 $ 91,933 1,000,000 Iowa Tobacco Settlement Authority, 5.6%, 6/1/34 944,490 4,580,000 Iowa Tobacco Settlement Authority, 5.625%, 6/1/46 4,060,216 ------------- $ 5,096,639 ------------------------------------------------------------------------------------------------------- Louisiana -- 0.7% 5,800,000 Tensas Parish Law Enforcement District, 8.5%, 10/1/26 (c) $ 3,481,276 ------------------------------------------------------------------------------------------------------- Maryland -- 0.2% 1,000,000 Maryland Health & Higher Educational Facilities Authority, City Neighbors Project Series A, 6.75%, 7/1/44 $ 1,080,900 ------------------------------------------------------------------------------------------------------- Massachusetts -- 2.1% 1,116,746 Massachusetts Development Finance Agency, Linden Ponds Series A, 11/15/56 (e) $ 6,555 4,003,354 Massachusetts Development Finance Agency, Linden Ponds Facility, 5.5%, 11/15/46 3,409,737 1,235,770 Massachusetts Development Finance Agency, Linden Ponds Series A, 6.25%, 11/15/26 1,203,640 3,340,294 Massachusetts Development Finance Agency, Linden Ponds Series A, 6.25%, 11/15/39 3,187,910 2,000,000 Massachusetts Development Finance Agency, Advent Care Project Series A, 6.75%, 10/15/37 2,068,880 860,000 Massachusetts Development Finance Agency, Advent Care Project Series A, 7.625%, 10/15/37 958,169 3,500,000 Massachusetts Health & Educational Facilities Authority, Quincy Medical Center, 6.5%, 1/15/38 (c) 8,575 ------------- $ 10,843,466 ------------------------------------------------------------------------------------------------------- Michigan -- 6.5% 1,250,000 Flint Hospital Building Authority, Hurley Medical Center, 5.25%, 7/1/39 $ 1,221,825 1,250,000 Flint Hospital Building Authority, Hurley Medical Center, 7.375%, 7/1/35 1,414,875 5,485,000 Flint International Academy, 5.75%, 10/1/37 5,522,079 225,000 Michigan Public Educational Facilities Authority, Dr Joseph F Pollack Academic Center of Excellence, 7.25%, 4/1/20 238,694 2,020,000 Michigan Public Educational Facilities Authority, Dr Joseph F Pollack Academic Center of Excellence, 8.0%, 4/1/40 2,148,937 4,410,000 Michigan Public Educational Facilities Authority, Dadid Ellis Academy West, 5.875%, 6/1/37 4,411,720 4,000,000 6.62 Michigan Strategic Fund, CFP Taylor Governmental Center LLC, Floating Rate Note, 11/1/41 4,274,560 7,135,000 6.75 Michigan Strategic Fund, CFP Michigan II LLC, Floating Rate Note, 3/1/40 7,705,301 The accompanying notes are an integral part of these financial statements. 18 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ------------------------------------------------------------------------------------------------------- Michigan -- (continued) 750,000 Michigan Tobacco Settlement Finance Authority, 6.0%, 6/1/34 $ 653,430 6,290,000 Michigan Tobacco Settlement Finance Authority, 6.0%, 6/1/48 5,242,526 1,250,000 Michigan Tobacco Settlement Finance Authority, 6.875%, 6/1/42 1,218,662 ------------- $ 34,052,609 ------------------------------------------------------------------------------------------------------- Minnesota -- 0.8% 2,000,000 Bloomington Port Authority, Radison Blu MOA LLC, 9.0%, 12/1/35 $ 2,293,980 1,500,000 City of Brooklyn Park Minnesota, Prarie Seeds Academy, 9.25%, 3/1/39 (Pre Refunded) 1,718,820 ------------- $ 4,012,800 ------------------------------------------------------------------------------------------------------- Missouri -- 1.7% 5,740,000 Community Memorial Hospital District, 6.68%, 12/1/34 $ 5,957,776 2,500,000 Kirkwood Industrial Development Authority, Aberdeen Heights Series A, 8.25%, 5/15/45 2,828,375 ------------- $ 8,786,151 ------------------------------------------------------------------------------------------------------- New Jersey -- 5.1% 6,000,000 New Jersey Economic Development Authority, Gloucester Marine Project, 6.625%, 1/1/37 $ 6,030,180 4,500,000 New Jersey Health Care Facilities Financing Authority, St Peters University Hospital, 6.25%, 7/1/35 4,837,680 7,580,000 Tobacco Settlement Financing Corp. New Jersey, 4.75%, 6/1/34 5,682,726 13,000,000 Tobacco Settlement Financing Corp. New Jersey, 5.0%, 6/1/41 9,848,280 ------------- $ 26,398,866 ------------------------------------------------------------------------------------------------------- New Mexico -- 1.1% 6,055,000 County of Otero New Mexico, 6.0%, 4/1/28 $ 5,822,185 ------------------------------------------------------------------------------------------------------- New York -- 4.6% 85,000 New York City Industrial Development Agency, British Airways Plc, 5.25%, 12/1/32 $ 85,255 2,210,000 New York Counties Tobacco Trust IV, 5.0%, 6/1/45 1,883,296 10,000,000 New York Counties Tobacco Trust V, 6/1/38 (e) 2,250,700 2,000,000 Onondaga Civic Development Corp., St Joseph's Hospital Health Center, 5.0%, 7/1/42 2,060,520 4,500,000 Suffolk Tobacco Asset Securitization Corp., 6/1/44 4,458,285 10,000,000 The Erie County Industrial Development Agency, Galvstar LLC Project Series A, 9.25%, 10/1/30 (c) 2,548,100 8,000,000 The Erie County Industrial Development Agency, Galvstar LLC Project Series B, 9.25%, 10/1/30 (c) 2,038,480 The accompanying notes are an integral part of these financial statements. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 19 Schedule of Investments | 8/31/15 (continued) ------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ------------------------------------------------------------------------------------------------------- New York -- (continued) 1,795,000 The Erie County Industrial Development Agency, Galvstar LLC Project Series C, 9.25%, 10/1/30 (c) $ 457,384 9,040,000 TSASC, Inc. New York, Series 1, 5.125%, 6/1/42 7,833,702 100,000 Westchester Tobacco Asset Securitization New York, 5.125%, 6/1/38 96,351 ------------- $ 23,712,073 ------------------------------------------------------------------------------------------------------- Ohio -- 6.5% 6,000,000 Buckeye Tobacco Settlement Financing Authority, 5.75%, 6/1/34 $ 4,807,860 8,000,000 Buckeye Tobacco Settlement Financing Authority, 5.875%, 6/1/47 6,410,400 8,555,000 Buckeye Tobacco Settlement Financing Authority, 6.0%, 6/1/42 6,972,753 5,010,000 Buckeye Tobacco Settlement Financing Authority, 6.5%, 6/1/47 4,352,538 1,150,000 County of Muskingum Ohio, Genesis Healthcare System, 5.0%, 2/15/33 1,206,097 5,000,000 County of Muskingum Ohio, Genesis Healthcare System, 5.0%, 2/15/48 5,177,450 2,900,000 Southeastern Ohio Port Authority, Marietta Aera Health Care, Inc., 6.0%, 12/1/42 3,118,051 500,000 Southeastern Ohio Port Authority, Memorial Health Systems, 5.0%, 12/1/43 502,535 1,000,000 Southeastern Ohio Port Authority, Memorial Health Systems, 5.5%, 12/1/43 1,044,120 ------------- $ 33,591,804 ------------------------------------------------------------------------------------------------------- Pennsylvania -- 9.3% 680,000 Allegheny County Hospital Development Authority, Ohio Valley General Hospital, 5.125%, 4/1/35 $ 675,730 3,000,000 Pennsylvania Economic Development Financing Authority, Northwestern Human Services, Inc., 5.25%, 6/1/28 3,001,590 2,005,000 Pennsylvania Economic Development Financing Authority, US Airways Group Series A, 7.5%, 5/1/20 2,304,567 8,445,000 Pennsylvania Economic Development Financing Authority, US Airways Group Series B, 8.0%, 5/1/29 9,979,710 2,200,000 Philadelphia Authority for Industrial Development, Greater Philadelphia Health, 6.5%, 6/1/45 2,170,080 3,145,000 Philadelphia Authority for Industrial Development, Greater Philadelphia Health, 6.625%, 6/1/50 3,104,587 2,500,000 Philadelphia Authority for Industrial Development, Green Woods Charter School, 5.5%, 6/15/32 2,565,225 5,200,000 Philadelphia Authority for Industrial Development, Green Woods Charter School, 5.75%, 6/15/42 5,352,412 6,000,000 Philadelphia Authority for Industrial Development, Nueva Esperanza, Inc., 8.2%, 12/1/43 6,616,800 The accompanying notes are an integral part of these financial statements. 20 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ------------------------------------------------------------------------------------------------------- Pennsylvania -- (continued) 3,000,000 Philadelphia Authority for Industrial Development, Performing Arts Charter School, 6.75%, 6/15/43 (144A) $ 3,158,250 1,000,000 Philadelphia Authority for Industrial Development, Performing Arts Charter School, 6.5%, 6/15/33 (144A) 1,047,490 4,000,000 Philadelphia Hospitals & Higher Education Facilities Authority, Temple University Health System, 5.625%, 7/1/42 4,190,040 4,000,000 Pottsville Hospital Authority Pennsylvania, Schuylkill Health System, 6.5%, 7/1/28 4,273,640 ------------- $ 48,440,121 ------------------------------------------------------------------------------------------------------- Puerto Rico -- 2.5% 18,000,000 Commonwealth of Puerto Rico, 8.0%, 7/1/35 (g) $ 13,072,680 ------------------------------------------------------------------------------------------------------- Rhode Island -- 0.1% 2,065,000 Central Falls Detention Facility Corp., 7.25%, 7/15/35 (c) $ 513,008 ------------------------------------------------------------------------------------------------------- Tennessee -- 0.0%+ 5,000 Johnson City Health & Educational Facilities Board, Appalachian Christian, 5.0%, 2/15/43 $ 5,128 ------------------------------------------------------------------------------------------------------- Texas -- 10.3% 14,850,000 Sanger Industrial Development Corp., Texas Pellets, Inc., 8.0%, 7/1/38 $ 15,950,534 6,350,000 Tarrant County Cultural Education Facilities Finance Corp., MRC Crestview Project, 8.125%, 11/15/44 7,292,784 5,500,000 Arlington Higher Education Finance Corp., LTTS Charter School, Inc., 7.125%, 3/1/44 5,817,350 5,000,000 Tarrant County Cultural Education Facilities Finance Corp., Stayton at Museum Way, 8.25%, 11/15/44 4,982,550 5,000,000 Tarrant County Cultural Education Facilities Finance Corp., Mirador Project, 8.125%, 11/15/39 4,724,950 2,700,000 City of Celina Texas, 6.25%, 9/1/40 2,607,444 2,250,000 Tarrant County Cultural Education Facilities Finance Corp., Mirador Project, 8.0%, 11/15/29 2,181,128 2,000,000 La Vernia Higher Education Finance Corp., Meridian World School Series A, 5.5%, 8/15/45 1,997,020 1,775,000 Tarrant County Cultural Education Facilities Finance Corp., Stayton at Museum Way, 8.0%, 11/15/28 1,779,722 1,380,000 Kinney County Public Facilities Corp., 7.0%, 11/1/25 1,239,682 1,075,000 City of Celina Texas, 6.0%, 9/1/30 1,046,029 1,000,000 City of Celina Texas, 5.5%, 9/1/24 980,560 650,000 City of Celina Texas, 5.875%, 9/1/40 626,925 500,000 City of Mclendon-Chisholm Texas, Sonoma Public Import District Phase, 5.125%, 9/15/28 491,135 450,000 City of Mclendon-Chisholm Texas, Sonoma Public Import District Phase, 5.375%, 9/15/35 439,740 The accompanying notes are an integral part of these financial statements. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 21 Schedule of Investments | 8/31/15 (continued) ------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ------------------------------------------------------------------------------------------------------- Texas -- (continued) 400,000 City of Mclendon-Chisholm Texas, Sonoma Public Import District Phase, 5.5%, 9/15/40 $ 389,912 400,000 City of Celina Texas, 5.375%, 9/1/28 389,788 250,000 City of Celina Texas, 5.5%, 9/1/32 242,488 120,000 Tarrant County Cultural Education Facilities Finance Corp., MRC Crestview Project, 8.0%, 11/15/34 138,085 1,000,000 Texas Midwest Public Facility Corp., Secure Treatment Facility, 9.0%, 10/1/30 (c) 129,000 234,442 Gulf Coast Industrial Development Authority, Micrology Holdings LLC, 7.0%, 12/1/36 (c) 2 ------------- $ 53,446,828 ------------------------------------------------------------------------------------------------------- Utah -- 1.8% 1,285,000 Utah State Charter School Finance Authority, Summit Academy High School, 7.25%, 5/15/21 $ 1,410,827 1,985,000 Utah State Charter School Finance Authority, Summit Academy High School, 8.125%, 5/15/31 2,241,621 5,145,000 Utah State Charter School Finance Authority, Summit Academy High School, 8.5%, 5/15/41 5,894,163 ------------- $ 9,546,611 ------------------------------------------------------------------------------------------------------- Virginia -- 2.3% 2,100,000 Cherry Hill Community Development Authority, Potomac Shores Project, 5.4%, 3/1/45 $ 2,132,277 13,840,000 Tobacco Settlement Financing Corp. Virginia, 5.0%, 6/1/47 9,733,257 ------------- $ 11,865,534 ------------------------------------------------------------------------------------------------------- Washington -- 2.7% 3,500,000 Washington State Housing Finance Commission, Skyline at First Hill Project, 5.625%, 1/1/27 $ 3,513,720 10,610,000 Washington State Housing Finance Commission, Skyline at First Hill Project, 5.625%, 1/1/38 10,404,272 ------------- $ 13,917,992 ------------------------------------------------------------------------------------------------------- West Virginia -- 4.7% 25,000,000 City of Philippi West Virginia, Alderson-Broaddus College, 7.75%, 10/1/44 $ 18,750,246 5,395,000 West Virginia Hospital Finance Authority, Highland Hospital, 9.125%, 10/1/41 5,978,631 ------------- $ 24,728,877 ------------------------------------------------------------------------------------------------------- Wisconsin -- 4.6% 1,245,000 Public Finance Authority, Voyager Foundation, Inc., 5.125%, 10/1/45 $ 1,248,610 1,590,000 Public Finance Authority, Coral Academy of Science, 5.625%, 7/1/44 1,677,561 The accompanying notes are an integral part of these financial statements. 22 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ------------------------------------------------------------------------------------------------------- Wisconsin -- (continued) 1,500,000 Public Finance Authority, Roseman University Health Sciences, 5.75%, 4/1/35 $ 1,504,290 4,150,000 Public Finance Authority, Roseman University Health Sciences, 5.875%, 4/1/45 4,158,798 2,815,000 Public Finance Authority, Voyager Foundation Inc., 6.2%, 10/1/42 3,010,811 5,057,500 Public Finance Authority, Las Ventanas Retirement Community, 7.0%, 10/1/42 5,062,659 5,325,000 Public Finance Authority, Glenridge of Palmer Ranch, 8.25%, 6/1/46 6,195,797 1,265,000 Public Finance Authority, Searstone Project, 8.375%, 6/1/20 1,269,137 ------------- $ 24,127,663 ------------------------------------------------------------------------------------------------------- TOTAL MUNICIPAL BONDS (Cost $515,479,520) $ 511,715,362 ------------------------------------------------------------------------------------------------------- MUNICIPAL COLLATERALIZED DEBT OBLIGATION -- 0.0%+ 1,175,000 0.00 Non-Profit Preferred Funding Trust I, Floating Rate Note, 9/15/37 (144A) $ 73,214 ------------------------------------------------------------------------------------------------------- TOTAL MUNICIPAL COLLATERALIZED DEBT OBLIGATION (Cost $1,172,488) $ 73,214 ------------------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 98.4% (Cost $516,652,008) (a)(h) $ 511,788,576 ------------------------------------------------------------------------------------------------------- OTHER ASSETS & LIABILITIES -- 1.6% $ 8,319,142 ------------------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $ 520,107,718 ======================================================================================================= (Pre-Refunded) Pre-Refunded bonds have been collateralized by U.S. Treasury securities which are held in escrow and used to pay principal and interest on the tax-exempt issue and to retire the bonds in full at the earliest refunding date. (Step) Step up bond issued with an initial coupon which converts to a higher rate at a later date. + Amount rounds to less than 0.01%. (144A) Security is exempt from registration under Rule 144A of the Securities Act of 1933. Such securities may be resold normally to qualified institutional buyers in a transaction exempt from registration. At August 31, 2015, the value of these securities amounted to $4,278,954 or 0.8% of total net assets. (a) At August 31, 2015, the net unrealized depreciation on investments based on cost for federal income tax purposes of $516,560,524 was as follows: Aggregate gross unrealized appreciation for all investments in which there is an excess of value over tax cost $ 32,321,859 Aggregate gross unrealized depreciation for all investments in which there is an excess of tax cost over value (37,093,807) ------------ Net unrealized depreciation $ (4,771,948) ============ (b) Debt obligation with a variable interest rate. Rate shown is rate at end of period. The accompanying notes are an integral part of these financial statements. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 23 Schedule of Investments | 8/31/15 (continued) (c) Security is in default. (d) Security is non-income producing. (e) Security issued with a zero coupon. Income is earned through accretion of discount. (f) Consists of Revenue Bonds unless otherwise indicated. (g) Represents a General Obligation bond. (h) The concentration of investments by type of obligation/market sector is as follows: Revenue Bonds: Health 30.0% Special Revenues 25.9% Education 20.9% Pollution Control Revenue 8.3% Various Revenues 8.0% General Obligation 3.4% Transportation 2.4% Housing 0.7% Insured 0.2% Escrowed 0.2% -------------------------------------------------------------------------------- 100.0% ================================================================================ Purchases and sales of securities (excluding temporary cash investments) for the year ended August 31, 2015 aggregated $195,366,952 and $142,900,631, respectively. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Level 1 - quoted prices in active markets for identical securities. Level 2 - other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) See Notes to Financial Statements -- Note 1A. Level 3 - significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) See Notes to Financial Statements -- Note 1A. Generally, equity securities are categorized as Level 1, fixed income securities and senior loans as Level 2 and securities valued using fair value methods (other than prices supplied by independent pricing services or broker-dealers) as Level 3. See Notes to Financial Statements -- Note 1A. The following is a summary of the inputs used as of August 31, 2015, in valuing the Fund's investments: ---------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ---------------------------------------------------------------------------------- Municipal Bonds $ -- $511,715,362 $ -- $511,715,362 Municipal Collateralized Debt Obligation -- 73,214 -- 73,214 ---------------------------------------------------------------------------------- Total $ -- $511,788,576 $ -- $511,788,576 ================================================================================== During the year ended August 31, 2015, there were no transfers between Levels 1, 2 and 3. The accompanying notes are an integral part of these financial statements. 24 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Statement of Assets and Liabilities | 8/31/15 ASSETS: Investment in securities, at value (cost $516,652,008) $511,788,576 Receivables -- Investment securities sold 1,055,902 Fund shares sold 1,974,095 Interest 9,849,201 Other Assets 38,577 ------------------------------------------------------------------------------- Total assets $524,706,351 =============================================================================== LIABILITIES: Payables -- Fund shares repurchased $ 1,974,690 Dividends 422,174 Trustee fees 3,514 Due to affiliates 108,126 Due to custodian 1,941,085 Accrued expenses 149,044 ------------------------------------------------------------------------------- Total liabilities $ 4,598,633 =============================================================================== NET ASSETS: Paid-in capital $576,077,176 Undistributed net investment income 9,220,468 Accumulated net realized loss on investments (60,326,494) Net unrealized depreciation on investments (4,863,432) ------------------------------------------------------------------------------- Total net assets $520,107,718 =============================================================================== NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $245,876,824/34,067,992 shares) $ 7.22 Class C (based on $146,029,311/20,232,106 shares) $ 7.22 Class Y (based on $128,201,583/17,995,378 shares) $ 7.12 MAXIMUM OFFERING PRICE: Class A ($7.22 (divided by) 95.5%) $ 7.56 =============================================================================== The accompanying notes are an integral part of these financial statements. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 25 Statement of Operations For the Year Ended 8/31/15 INVESTMENT INCOME: Interest $33,283,048 ---------------------------------------------------------------------------------------- Total investment income $33,283,048 ---------------------------------------------------------------------------------------- EXPENSES: Management fees $ 2,563,968 Transfer agent fees Class A 24,439 Class C 8,298 Class Y 1,882 Distribution fees Class A 616,497 Class C 1,496,621 Shareholder communications expense 323,310 Administrative reimbursement 157,501 Custodian fees 9,355 Registration fees 46,000 Professional fees 95,400 Printing expense 31,804 Fees and expenses of nonaffiliated Trustees 18,870 Miscellaneous 92,598 ---------------------------------------------------------------------------------------- Total expenses $ 5,486,543 ---------------------------------------------------------------------------------------- Net investment income $27,796,505 ---------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: Net realized loss on investments $(6,679,877) ---------------------------------------------------------------------------------------- Change in net unrealized appreciation on investments $ 875,019 ---------------------------------------------------------------------------------------- Net realized and unrealized loss on investments $(5,804,858) ---------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $21,991,647 ======================================================================================== The accompanying notes are an integral part of these financial statements. 26 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Statements of Changes in Net Assets ----------------------------------------------------------------------------------------- Year Ended Year Ended 8/31/15 8/31/14 ----------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income $ 27,796,505 $ 28,710,919 Net realized gain (loss) on investments (6,679,877) 2,409,680 Change in net unrealized appreciation (depreciation) on investments 875,019 3,527,217 ----------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $ 21,991,647 $ 34,647,816 ----------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.40 and $0.44 per share, respectively) $ (13,393,020) $ (14,679,335) Class C ($0.35 and $0.39 per share, respectively) (7,010,653) (8,896,752) Class Y ($0.41 and $0.45 per share, respectively) (6,591,060) (6,197,281) ----------------------------------------------------------------------------------------- Total distributions to shareowners $ (26,994,733) $ (29,773,368) ----------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 169,528,293 $ 171,100,856 Reinvestment of distributions 22,079,945 23,543,400 Cost of shares repurchased (156,480,079) (274,646,597) ----------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from Fund share transactions $ 35,128,159 $ (80,002,341) ----------------------------------------------------------------------------------------- Net increase (decrease) in net assets $ 30,125,073 $ (75,127,893) NET ASSETS: Beginning of year $ 489,982,645 $ 565,110,538 ----------------------------------------------------------------------------------------- End of year $ 520,107,718 $ 489,982,645 ----------------------------------------------------------------------------------------- Undistributed net investment income $ 9,220,468 $ 8,420,280 ========================================================================================= The accompanying notes are an integral part of these financial statements. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 27 Statements of Changes in Net Assets (continued) ---------------------------------------------------------------------------------------------- Year Ended Year Ended Year Ended Year Ended 8/31/15 8/31/15 8/31/14 8/31/14 Shares Amount Shares Amount ---------------------------------------------------------------------------------------------- Class A Shares sold 11,663,809 $ 85,671,600 13,364,645 $ 95,629,792 Reinvestment of distributions 1,603,795 11,756,863 1,762,944 12,632,777 Less shares repurchased (12,244,062) (89,616,434) (16,892,168) (120,665,382) ---------------------------------------------------------------------------------------------- Net increase (decrease) 1,023,542 $ 7,812,029 (1,764,579) $ (12,402,813) ============================================================================================== Class C Shares sold 3,106,826 $ 22,852,098 3,088,934 $ 22,128,792 Reinvestment of distributions 775,852 5,689,573 969,680 6,948,501 Less shares repurchased (4,193,913) (30,726,011) (10,680,691) (76,310,340) ---------------------------------------------------------------------------------------------- Net decrease (311,235) $ (2,184,340) (6,622,077) $ (47,233,047) ============================================================================================== Class Y Shares sold 8,395,575 $ 61,004,595 7,547,136 $ 53,342,272 Reinvestment of distributions 640,635 4,633,509 560,257 3,962,122 Less shares repurchased (4,995,290) (36,137,634) (11,017,755) (77,670,875) ---------------------------------------------------------------------------------------------- Net increase (decrease) 4,040,920 $ 29,500,470 (2,910,362) $ (20,366,481) ============================================================================================== The accompanying notes are an integral part of these financial statements. 28 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Financial Highlights ---------------------------------------------------------------------------------------------------------------------------- Year Year Year Year Year Ended Ended Ended Ended Ended 8/31/15 8/31/14 8/31/13 8/31/12 8/31/11 ---------------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 7.27 $ 7.19 $ 7.94 $ 7.58 $ 7.97 ---------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.41 $ 0.43 $ 0.53 $ 0.47 $ 0.53 Net realized and unrealized gain (loss) on investments (0.06) 0.09 (0.84) 0.34 (0.40) ---------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.35 $ 0.52 $ (0.31) $ 0.81 $ 0.13 ---------------------------------------------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.40) $ (0.44) $ (0.44) $ (0.45) $ (0.52) ---------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.05) $ 0.08 $ (0.75) $ 0.36 $ (0.39) ---------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 7.22 $ 7.27 $ 7.19 $ 7.94 $ 7.58 ============================================================================================================================ Total return* 4.88% 7.52% (4.26)% 11.24% 1.83% Ratio of net expenses to average net assets 0.89% 0.90% 0.88% 0.89% 0.88% Ratio of net investment income (loss) to average net assets 5.59% 5.97% 6.26% 6.25% 6.98% Portfolio turnover rate 29% 55% 17% 54% 65% Net assets, end of period (in thousands) $245,877 $240,331 $250,163 $373,039 $378,883 ============================================================================================================================ * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. The accompanying notes are an integral part of these financial statements. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 29 Financial Highlights (continued) ---------------------------------------------------------------------------------------------------------------------------- Year Year Year Year Year Ended Ended Ended Ended Ended 8/31/15 8/31/14 8/31/13 8/31/12 8/31/11 ---------------------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 7.28 $ 7.19 $ 7.94 $ 7.58 $ 7.96 ---------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.36 $ 0.41 $ 0.46 $ 0.41 $ 0.47 Net realized and unrealized gain (loss) on investments (0.07) 0.07 (0.83) 0.35 (0.39) ---------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.29 $ 0.48 $ (0.37) $ 0.76 $ 0.08 ---------------------------------------------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.35) $ (0.39) $ (0.38) $ (0.40) $ (0.46) ---------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.06) $ 0.09 $ (0.75) $ 0.36 $ (0.38) ---------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 7.22 $ 7.28 $ 7.19 $ 7.94 $ 7.58 ============================================================================================================================ Total return* 3.95% 6.85% (4.98)% 10.42% 1.19% Ratio of net expenses to average net assets 1.65% 1.66% 1.63% 1.63% 1.63% Ratio of net investment income (loss) to average net assets 4.83% 5.23% 5.53% 5.50% 6.24% Portfolio turnover rate 29% 55% 17% 54% 65% Net assets, end of period (in thousands) $146,029 $149,453 $195,290 $265,448 $244,848 ============================================================================================================================ * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. The accompanying notes are an integral part of these financial statements. 30 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 ---------------------------------------------------------------------------------------------------------------------------- Year Year Year Year Year Ended Ended Ended Ended Ended 8/31/15 8/31/14 8/31/13 8/31/12 8/31/11 ---------------------------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 7.18 $ 7.10 $ 7.84 $ 7.49 $ 7.88 ---------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.39 $ 0.46 $ 0.53 $ 0.48 $ 0.53 Net realized and unrealized gain (loss) on investments (0.04) 0.07 (0.82) 0.33 (0.39) ---------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.35 $ 0.53 $ (0.29) $ 0.81 $ 0.14 ---------------------------------------------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.41) $ (0.45) $ (0.45) $ (0.46) $ (0.53) ---------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.06) $ 0.08 $ (0.74) $ 0.35 $ (0.39) ---------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 7.12 $ 7.18 $ 7.10 $ 7.84 $ 7.49 ============================================================================================================================ Total return* 4.92% 7.69% (4.05)% 11.43% 2.02% Ratio of net expenses to average net assets 0.71% 0.71% 0.72% 0.67% 0.67% Ratio of net investment income (loss) to average net assets 5.77% 6.17% 6.40% 6.46% 7.21% Portfolio turnover rate 29% 55% 17% 54% 65% Net assets, end of period (in thousands) $128,202 $100,199 $119,658 $176,664 $198,089 ============================================================================================================================ * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period. The accompanying notes are an integral part of these financial statements. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 31 Notes to Financial Statements | 8/31/15 1. Organization and Significant Accounting Policies Pioneer High Income Municipal Fund (the Fund) is one of five portfolios comprising Pioneer Series Trust V, a Delaware statutory trust. The Fund is registered under the Investment Company Act of 1940 as an open-end management investment company. The Fund is non-diversified. The investment objective of the Fund is to maximize total return through a combination of income that is exempt from regular federal income tax and capital appreciation. The Fund offers three classes of shares designated as Class A, Class C and Class Y shares. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different rates of class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends from net investment income earned by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Each share class has exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. There is no distribution plan for Class Y shares. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses, and gain or loss on investments during the reporting period. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements: 32 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Fund is computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. Fixed income securities are valued at prices supplied by independent pricing services, which consider such factors as market prices, market events, quotations from one or more brokers, Treasury spreads, yields, maturities and ratings. Valuations may be supplemented by dealers and other sources, as required. Cash may include overnight time deposits at approved financial institutions. Securities for which independent pricing services are unable to supply prices or for which market prices and/or quotations are not readily available or are considered to be unreliable are valued by a fair valuation team comprised of certain personnel of Pioneer Investment Management, Inc. (PIM), the Fund's investment adviser, pursuant to procedures adopted by the Fund's Board of Trustees. PIM's fair valuation team uses fair value methods approved by the Valuation Committee of the Board of Trustees. Inputs used when applying fair value methods to value a security may include credit ratings, the financial condition of the company, current market conditions and comparable securities. The Fund may use fair value methods if it is determined that a significant event has occurred after the close of the exchange or market on which the security trades and prior to the determination of the Fund's net asset value. Examples of a significant event might include political or economic news, corporate restructurings, natural disasters, terrorist activity or trading halts. Thus, the valuation of the Fund's securities may differ significantly from exchange prices and such differences could be material. PIM's fair valuation team is responsible for monitoring developments that may impact fair valued securities and for discussing and assessing fair values on an ongoing basis, and at least quarterly, with the Valuation Committee of the Board of Trustees. At August 31, 2015, there were no securities that were valued using fair value methods (other than securities valued using prices supplied by independent pricing services or broker-dealers). B. Investment Income and Transactions Discount and premium on purchase prices of debt securities are accreted or amortized, respectively, daily into interest income on a yield-to-maturity basis with a corresponding increase or decrease in the cost basis of the security. Interest income is recorded on the accrual basis. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 33 C. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no provision for federal income taxes is required. As of August 31, 2015, the Fund did not accrue any interest or penalties with respect to uncertain tax positions, which, if applicable, would be recorded as an income tax expense in the Statement of Operations. Tax returns filed within the prior three years remain subject to examination by Federal and State tax authorities. The amount and character of income and capital gain distributions to shareowners are determined in accordance with federal income tax rules, which may differ from U.S. generally accepted accounting principles. Distributions in excess of net investment income or net realized gains are temporary overdistributions for financial statement purposes resulting from differences in the recognition or classification of income or distributions for financial statement and tax purposes. Capital accounts within the financial statements are adjusted for permanent book/tax differences to reflect tax character, but are not adjusted for temporary differences. At August 31, 2015, the Fund reclassified $1,584 to decrease undistributed net investment income and $1,584 to decrease accumulated net realized loss on investments to reflect permanent book/tax differences. These adjustments have no impact on net assets or the results of operations. At August 31, 2015, the Fund was permitted to carry forward indefinitely $21,308,836 of short-term losses and $30,332,774 of long-term losses under the Regulated Investment Company Modernization Act of 2010 without limitation. Additionally, at August 31, 2015, the Fund had a net capital loss carryforward of $8,649,148 of which the following amounts will expire between 2017 and 2018 if not utilized: $2,640,380 in 2017 and $6,008,768 in 2018. Since new losses are required to be used first, loss carryforwards that are subject to expiration may be more likely to expire unused. The tax character of distributions during the years ended August 31, 2015 and August 31, 2014 were as follows: --------------------------------------------------------------------------- 2015 2014 --------------------------------------------------------------------------- Distributions paid from: Tax-exempt income $26,502,250 $28,444,745 Ordinary income 492,483 1,328,623 --------------------------------------------------------------------------- Total $26,994,733 $29,773,368 =========================================================================== 34 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 The following shows the components of distributable earnings on a federal income tax-basis at August 31, 2015: --------------------------------------------------------------------------- 2015 --------------------------------------------------------------------------- Distributable earnings: Undistributed tax-exempt income $ 9,515,422 Capital loss carryforward (60,290,758) Current year dividend payable (422,174) Net unrealized depreciation (4,771,948) --------------------------------------------------------------------------- Total $(55,969,458) =========================================================================== The difference between book-basis and tax-basis net unrealized depreciation is attributable to adjustments related to interest on defaulted bonds, the tax treatment of amortization and tax-basis adjustments on partnerships. D. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), earned $75,010 in underwriting commissions on the sale of Class A shares during the year ended August 31, 2015. E. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on its respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A and Class C shares of the Fund, respectively (see Note 4). Class Y shares do not pay distribution fees. All expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services are allocated among the classes of shares based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). The Fund declares, as daily dividends, substantially all of its net investment income. All dividends are paid on a monthly basis. Short-term capital gain distributions, if any, may be declared with the daily dividends. Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner and at the same time, except that net investment income dividends to Class A, Class C, and Class Y shares can reflect different transfer agent and distribution expense rates. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 35 F. Risks At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making the Fund more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. The Fund's prospectus contains unaudited information regarding the Fund's principal risks. Please refer to that document when considering the Fund's principal risks. 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredit, manages the Fund's portfolio. Management fees are calculated daily at the annual rate equal to 0.50% of the Fund's average daily net assets up to $500 million; 0.475% of the next $500 million of the Fund's average daily net assets and 0.45% of the Fund's average daily net assets over $1 billion. For the year ended August 31, 2015, the effective management fee (excluding waivers and/or assumption of expenses) was equivalent to 0.50% of the Fund's average daily net assets. PIM has contractually agreed to limit ordinary operating expenses (excluding taxes, commissions, interest and extraordinary expenses) of the Fund to the extent required to reduce Fund expenses to 0.90% and 1.80% of the average daily net assets attributable to Class A shares. Class C and Class Y shares do not have an expense limitation. This expense limitation is in effect through January 1, 2016 for Class A shares. There can be no assurance that PIM will extend the expense limitation agreement for a class of shares beyond the date referred to above. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund as administrative reimbursements. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $29,649 in management fees, administrative costs and certain other reimbursements payable to PIM at August 31, 2015. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimburses PIMSS for out-of-pocket expenses incurred by PIMSS related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the year ended August 31, 2015, such out-of-pocket expenses by class of shares were as follows: -------------------------------------------------------------------------------- Shareholder Communications: -------------------------------------------------------------------------------- Class A $ 94,768 Class C 81,928 Class Y 146,614 -------------------------------------------------------------------------------- Total $323,310 ================================================================================ 36 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $55,802 in transfer agent fees and out-of-pocket reimbursements payable to PIMSS at August 31, 2015. 4. Distribution Plan The Fund has adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A and Class C shares. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Pursuant to the Plan, the Fund also pays PFD 1.00% of the average daily net assets attributable to Class C shares. The fee for Class C shares consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class C shares. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $22,675 in distribution fees payable to PFD at August 31, 2015. In addition, redemptions of each class of shares (except Class Y shares) may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within 12 months of purchase. Redemptions of Class C shares within 12 months of purchase are subject to a CDSC of 1.00%, based on the lower of cost or market value of shares being redeemed. Shares purchased as part of an exchange remain subject to any CDSC that applied to the original purchase of those shares. There is no CDSC for Class Y shares. Proceeds from the CDSCs are paid to PFD. For the year ended August 31, 2015, CDSCs in the amount of $14,380 were paid to PFD. 5. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS which may result in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the year ended August 31, 2015, the Fund's expenses were not reduced under such arrangements. 6. Line of Credit Facility The Fund, along with certain other funds in the Pioneer Family of Funds (the Funds), participates in a committed, unsecured revolving line of credit facility. Borrowings are used solely for temporary or emergency purposes. The Fund may borrow up to the lesser of the amount available under the facility or the limits set for borrowing by the Fund's prospectus and the 1940 Act. The credit facility in effect until June 9, 2015 was in the amount of $215 million. As of June 9, 2015, the facility is in the amount of $240 million. Under such facility, depending on the type of loan, interest on borrowings is payable at the London Pioneer High Income Municipal Fund | Annual Report | 8/31/15 37 Interbank Offered Rate (LIBOR) plus 0.85% (0.90% as of February 12, 2014) on an annualized basis, or the alternate base rate, which is the greater of (a) the facility's administrative agent's daily announced prime rate on the borrowing date, (b) 2% plus the federal funds rate on the borrowing date and (c) 2% plus the overnight eurodollar rate on the borrowing date. The Funds pay an annual commitment fee to participate in the credit facility. The commitment fee is allocated among participating Funds based on an allocation schedule set forth in the credit agreement. For the year ended August 31, 2015, the Fund had no borrowings under the credit agreement. 38 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Report of Independent Registered Public Accounting Firm To the Board of Trustees of Pioneer Series Trust V and the Shareowners of Pioneer High Income Municipal Fund: -------------------------------------------------------------------------------- We have audited the accompanying statement of assets and liabilities of Pioneer High Income Municipal Fund (the "Fund"), one of the portfolios constituting Pioneer Series Trust V, including the schedule of investments, as of August 31, 2015, and the related statement of operations for year then ended and the statements of changes in net assets and the financial highlights for each of the two years in the period then ended. These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. The financial highlights for the years ended August 31, 2013, 2012, and 2011 were audited by other auditors. Those auditors expressed an unqualified opinion on those financial statements and financial highlights in their report dated October 28, 2013. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of August 31, 2015, by correspondence with the custodian and brokers; where replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Pioneer High Income Municipal Fund as of August 31, 2015, the results of its operations for the year then ended, and the changes in its net assets and the financial highlights for each of the two years in the period then ended, in conformity with accounting principles generally accepted in the United States of America. /s/ Deloitte & Touche LLP Boston, Massachusetts October 28, 2015 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 39 Additional Information (unaudited) PIM, the Fund's investment adviser, is currently an indirect, wholly-owned subsidiary of UniCredit. On April 23, 2015, UniCredit announced that it signed a preliminary and exclusive agreement with Banco Santander and affiliates of Warburg Pincus and General Atlantic (the "Private Equity Firms") with respect to Pioneer Investments ("Pioneer") and Santander Asset Management ("SAM") (the "Transaction"). The Transaction, as described in the UniCredit announcement, will entail the establishment of a holding company, with the name Pioneer Investments, to be owned by UniCredit (50%) and the Private Equity Firms (50% between them). The holding company will control Pioneer's U.S. operations, including the Adviser. The holding company also will own 66.7% of Pioneer's and SAM's combined operations outside the U.S., while Banco Santander will own directly the remaining 33.3% stake. The completion of the Transaction is subject to the signing of a definitive agreement, as well as certain regulatory and corporate approvals, and other conditions. Under the Investment Company Act of 1940, completion of the Transaction will cause the Fund's investment advisory agreement with the Adviser to terminate. In connection with the Transaction, the Fund's Board of Trustees will be asked to approve a new investment advisory agreement for the Fund. If approved by the Board, the Fund's new investment advisory agreement will be submitted to the shareholders of the Fund for their approval. The percentage of the Fund's ordinary income distributions that are exempt from nonresident alien (NRA) tax withholding resulting from qualified interest income and qualified short term gains were 100.00% and 0.00%, respectively. 40 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Custodian and Sub-Administrator Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Deloitte & Touche LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Morgan, Lewis & Bockius LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at us.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at www.sec.gov. Trustees and Officers The Fund's Trustees and officers are listed below, together with their principal occupations during at least the past five years. Trustees who are interested persons of the Fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the Fund are referred to as Independent Trustees. Each of the Trustees serves as a Trustee of each of the 51 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the Fund is 60 State Street, Boston, Massachusetts 02109. The Statement of Additional Information of the Fund includes additional information about the Trustees and is available, without charge, upon request, by calling 1-800-225-6292. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 41 Independent Trustees ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Thomas J. Perna (64) Trustee since 2006. Private investor (2004-2008 and Director, Broadridge Chairman of the Board Serves until a successor 2013-present); Chairman (2008-2013) and Financial Solutions, Inc. and Trustee trustee is elected or earlier Chief Executive Officer (2008-2012), (investor communications retirement or removal. Quadriserv, Inc. (technology products for and securities processing securities lending industry); and Senior provider for financial Executive Vice President, The Bank of New services industry) (2009- York (financial and securities services) present); Director, (1986-2004) Quadriserv, Inc. (2005-2013); and Commissioner, New Jersey State Civil Service Commission (2011-present) ------------------------------------------------------------------------------------------------------------------------------------ David R. Bock (71) Trustee since 2005. Managing Partner, Federal City Capital Director of New York Trustee Serves until a successor Advisors (corporate advisory services Mortgage Trust trustee is elected or earlier company) (1997-2004 and 2008-present); (publicly-traded mortgage retirement or removal. Interim Chief Executive Officer, Oxford REIT) (2004-2009, Analytica, Inc. (privately-held research 2012-present); Director and consulting company) (2010); Executive of The Swiss Helvetia Vice President and Chief Financial Fund, Inc. (closed-end Officer, I-trax, Inc. (publicly traded fund) (2010-present); health care services company) Director of Oxford (2004-2007); and Executive Vice President Analytica, Inc. and Chief Financial Officer, Pedestal (2008-present); and Inc. (internet-based mortgage trading Director of Enterprise company) (2000-2002); Private consultant Community Investment, (1995-1997), Managing Director, Lehman Inc. (privately-held Brothers (investment banking firm) affordable housing (1992-1995); and Executive, The World finance company) Bank (1979-1992) (1985-2010) ------------------------------------------------------------------------------------------------------------------------------------ Benjamin M. Friedman (71) Trustee since 2008. William Joseph Maier Professor of Trustee, Mellon Trustee Serves until a successor Political Economy, Harvard University Institutional Funds trustee is elected or earlier (1972-present) Investment Trust and retirement or removal. Mellon Institutional Funds Master Portfolio (oversaw 17 portfolios in fund complex) (1989-2008) ------------------------------------------------------------------------------------------------------------------------------------ 42 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Margaret B.W. Graham (68) Trustee since 2006. Founding Director, Vice President and None Trustee Serves until a successor Corporate Secretary, The Winthrop Group, trustee is elected or earlier Inc. (consulting firm) (1982-present); retirement or removal. Desautels Faculty of Management, McGill University (1999-present); and Manager of Research Operations and Organizational Learning, Xerox PARC, Xerox's advance research center (1990-1994) ------------------------------------------------------------------------------------------------------------------------------------ Marguerite A. Piret (67) Trustee since 2006. President and Chief Executive Officer, Director of New America Trustee Serves until a successor Newbury, Piret & Company, Inc. High Income Fund, Inc. trustee is elected or earlier (investment banking firm) (1981-present) (closed-end investment retirement or removal. company) (2004-present); and Member, Board of Governors, Investment Company Institute (2000-2006) ------------------------------------------------------------------------------------------------------------------------------------ Fred J. Ricciardi (68) Trustee since 2014. Consultant (investment company services) None Trustee Serves until a successor (2012-present); Executive Vice President, trustee is elected or earlier BNY Mellon (financial and investment retirement or removal. company services) (1969-2012); Director, BNY International Financing Corp. (financial services) (2002-2012); and Director, Mellon Overseas Investment Corp. (financial services) (2009-2012) ------------------------------------------------------------------------------------------------------------------------------------ Pioneer High Income Municipal Fund | Annual Report | 8/31/15 43 Interested Trustee ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Kenneth J. Taubes (57)* Trustee since 2014. Director and Executive Vice President None Trustee Serves until a successor (since 2008) and Chief Investment trustee is elected or earlier Officer, U.S. (since 2010) of PIM-USA; retirement or removal. Executive Vice President of Pioneer (since 2008); Executive Vice President of Pioneer Institutional Asset Management, Inc. (since 2009); and Portfolio Manager of Pioneer (since 1999) ------------------------------------------------------------------------------------------------------------------------------------ * Mr. Taubes is an Interested Trustee because he is an officer of the Fund's investment adviser and certain of its affiliates. 44 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 Advisory Trustee ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Lorraine Monchak (59)** Advisory Trustee since 2014. Chief Investment Officer, 1199 SEIU Funds None Advisory Trustee (healthcare workers union pension funds) (2001-present); Vice President-International Investments Group, American International Group, Inc. (insurance company) (1993-2001); Vice President Corporate Finance and Treasury Group, Citibank, N.A.(1980-1986 and 1990- 1993); Vice President-Asset/Liability Management Group, Federal Farm Funding Corporation (government-sponsored issuer of debt securities) (1988-1990); Mortgage Strategies Group, Shearson Lehman Hutton, Inc. (investment bank) (1987-1988); and Mortgage Strategies Group, Drexel Burnham Lambert, Ltd. (investment bank) (1986-1987) ------------------------------------------------------------------------------------------------------------------------------------ ** Ms. Monchak is a non-voting advisory trustee. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 45 Fund Officers ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Lisa M. Jones (53) Since 2014. Serves at the Chair, Director, CEO and President of None President and discretion of the Board. Pioneer Investment Management-USA (since Chief Executive Officer September 2014); Chair, Director, CEO and President of Pioneer Investment Management, Inc. (since September 2014); Chair, Director, CEO and President of Pioneer Funds Distributor, Inc. (since September 2014); Chair, Director, CEO and President of Pioneer Institutional Asset Management, Inc. (since September 2014); and Chair, Director, and CEO of Pioneer Investment Management Shareholder Services, Inc. (since September 2014); Managing Director, Morgan Stanley Investment Management (2010-2013); and Director of Institutional Business, CEO of International, Eaton Vance Management (2005-2010) ------------------------------------------------------------------------------------------------------------------------------------ Christopher J. Kelley (50) Since 2006. Serves at the Vice President and Associate General None Secretary and Chief discretion of the Board. Counsel of Pioneer since January 2008; Legal Officer Secretary and Chief Legal Officer of all of the Pioneer Funds since June 2010; Assistant Secretary of all of the Pioneer Funds from September 2003 to May 2010; and Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 ------------------------------------------------------------------------------------------------------------------------------------ Carol B. Hannigan (54) Since 2010. Serves at the Fund Governance Director of Pioneer since None Assistant Secretary discretion of the Board. December 2006 and Assistant Secretary of all the Pioneer Funds since June 2010; Manager-Fund Governance of Pioneer from December 2003 to November 2006; and Senior Paralegal of Pioneer from January 2000 to November 2003 ------------------------------------------------------------------------------------------------------------------------------------ Thomas Reyes (52) Since 2010. Serves at the Senior Counsel of Pioneer since May 2013 None Assistant Secretary discretion of the Board. and Assistant Secretary of all the Pioneer Funds since June 2010; and Counsel of Pioneer from June 2007 to May 2013 ------------------------------------------------------------------------------------------------------------------------------------ Mark E. Bradley (55) Since 2008. Serves at the Vice President-Fund Treasury of Pioneer; None Treasurer and Chief discretion of the Board. Treasurer of all of the Pioneer Funds Financial since March 2008; Deputy Treasurer of and Accounting Officer Pioneer from March 2004 to February 2008; and Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008 ------------------------------------------------------------------------------------------------------------------------------------ 46 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Luis I. Presutti (50) Since 2006. Serves at the Director-Fund Treasury of Pioneer; and None Assistant Treasurer discretion of the Board. Assistant Treasurer of all of the Pioneer Funds ------------------------------------------------------------------------------------------------------------------------------------ Gary Sullivan (57) Since 2006. Serves at the Fund Accounting Manager-Fund Treasury of None Assistant Treasurer discretion of the Board. Pioneer; and Assistant Treasurer of all of the Pioneer Funds ------------------------------------------------------------------------------------------------------------------------------------ David F. Johnson (35) Since 2009. Serves at the Fund Administration Manager-Fund Treasury None Assistant Treasurer discretion of the Board. of Pioneer since November 2008; Assistant Treasurer of all of the Pioneer Funds since January 2009; and Client Service Manager-Institutional Investor Services at State Street Bank from March 2003 to March 2007 ------------------------------------------------------------------------------------------------------------------------------------ Jean M. Bradley (62) Since 2010. Serves at the Chief Compliance Officer of Pioneer and None Chief Compliance Officer discretion of the Board. of all the Pioneer Funds since March 2010; Chief Compliance Officer of Pioneer Institutional Asset Management, Inc. since January 2012; Chief Compliance Officer of Vanderbilt Capital Advisors, LLC since July 2012: Director of Adviser and Portfolio Compliance at Pioneer since October 2005; and Senior Compliance Officer for Columbia Management Advisers, Inc. from October 2003 to October 2005 ------------------------------------------------------------------------------------------------------------------------------------ Kelly O'Donnell (44) Since 2006. Serves at the Director-Transfer Agency Compliance of None Anti-Money Laundering discretion of the Board. Pioneer and Anti-Money Laundering Officer Officer of all the Pioneer Funds since 2006 ------------------------------------------------------------------------------------------------------------------------------------ Pioneer High Income Municipal Fund | Annual Report | 8/31/15 47 This page for your notes. 48 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 This page for your notes. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 49 This page for your notes. 50 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 This page for your notes. Pioneer High Income Municipal Fund | Annual Report | 8/31/15 51 This page for your notes. 52 Pioneer High Income Municipal Fund | Annual Report | 8/31/15 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Write to us: -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: us.pioneerinvestments.com This report must be preceded or accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. [LOGO] PIONEER Investments(R) Pioneer Investment Management, Inc. 60 State Street Boston, MA 02109 us.pioneerinvestments.com Securities offered through Pioneer Funds Distributor, Inc. 60 State Street, Boston, MA 02109 Underwriter of Pioneer Mutual Funds, Member SIPC (C) 2015 Pioneer Investments 21203-08-1015 Pioneer Long/Short Bond Fund (Formerly Pioneer Long/Short Global Bond Fund)* -------------------------------------------------------------------------------- Annual Report | August 31, 2015 -------------------------------------------------------------------------------- Ticker Symbols: Class A LSGAX Class C LSGCX Class Y LSGYX * Effective June 1, 2015, the Fund was renamed Pioneer Long/Short Bond Fund. [LOGO] PIONEER Investments(R) visit us: us.pioneerinvestments.com Table of Contents President's Letter 2 Portfolio Management Discussion 4 Portfolio Summary 10 Prices and Distributions 11 Performance Update 12 Comparing Ongoing Fund Expenses 15 Schedule of Investments 17 Financial Statements 28 Notes to Financial Statements 35 Report of Independent Registered Public Accounting Firm 53 Trustees, Officers and Service Providers 55 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 1 President's Letter Dear Shareholder, In the second half of 2015, two main issues have been dominating the attention of global investors and policymakers alike, and shaping the current investment environment: The Federal Reserve System's (the Fed's) deliberations over when to begin normalizing interest rates in the U.S., and the increasing divergence in economic activity around the globe. As 2015 began, market expectations were that the Fed would likely begin raising interest rates by the middle of the year, but a sluggish gross domestic product report in the first calendar quarter as well as relatively benign inflation and wage growth contributed to the Fed's taking a more cautionary approach and delaying the start of its rate-hike cycle. At the same time, however, the U.S. labor market has continued its robust improvement, moving the Fed closer to declaring victory on one of its main monetary policy objectives -- full employment. Meanwhile, global economic activity has continued to diverge, with developed economies experiencing above-trend growth and most emerging markets economies lagging the rest of the world. The slower pace of economic activity in the emerging markets has been most evident in China, as the country's economy continues to undergo a long, potentially painful adjustment from investment-led growth to consumption-oriented growth. This divergence in global economic cycles is likely to continue for some time, and we would expect an increased level of volatility as global capital markets and policymakers adjust. Pioneer Investments believes that investors in today's environment can potentially benefit from the consistent and disciplined investment approach we have used since our founding in 1928. We focus on identifying value across global markets using proprietary research, careful risk management, and a long-term perspective. Our ongoing goal is to produce compelling returns consistent with the stated objectives of our investment products, and with our shareowners' expectations. We believe our shareowners can benefit from the experience and tenure of our investment teams as well as the insights generated from our extensive research process. 2 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 As always, and particularly during times of market uncertainty, we encourage you to work with your financial advisor to develop an overall investment plan that addresses both your short- and long-term goals, and to implement such a plan in a disciplined manner. We greatly appreciate your trust in us in the past and look forward to continuing to serve you in the future. Sincerely, /s/Lisa M. Jones Lisa M. Jones President and CEO Pioneer Investment Management USA, Inc. Any information in this shareowner report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 3 Portfolio Management Discussion | 8/31/15 In the following interview, portfolio managers Thomas Swaney and Benjamin Gord discuss the factors that influenced Pioneer Long/Short Bond Fund's performance during the 12-month period ended August 31, 2015, as well as their investment approach in managing the Fund. Mr. Swaney, Head of Alternative Fixed Income, U.S., a senior vice president, and a portfolio manager at Pioneer (lead portfolio manager of the Fund since 2013), and Mr. Gord, a vice president and a portfolio manager at Pioneer, are responsible for the day-to-day management of the Fund. Q How did the Fund perform during the 12-month period ended August 31, 2015? A Pioneer Long/Short Bond Fund's Class A shares returned 1.14% at net asset value during the 12-month period ended August 31, 2015, while the Fund's benchmark, the Bank of America Merrill Lynch (BofA ML) 3-Month U.S. Treasury-Bill Index, returned 0.03%. During the same period, the average return of the 231 mutual funds in Lipper's Alternative Credit Focus Funds category was -2.22%, and the average return of the 418 mutual funds in Morningstar's Non-Traditional Bond Funds category was -1.38%. Q Can you provide an overview of the Fund's approach? A The big picture is that we seek to have the Fund produce an average annual return that is greater than the return on three-month Treasury bills, on an annualized basis, with volatility that is about the same as that of the broad fixed-income market. In pursuing this goal, we seek to have the Fund provide positive returns while trying to minimize the extent of any negative returns, regardless of market conditions. Obviously, if we are going to be successful in achieving our objective, the Fund's returns cannot be overly dependent on the direction of one or more financial asset categories. In seeking positive returns regardless of market conditions, we utilize two distinct strategies. One strategy is "directional," in that we need to be correct about whether a particular asset price is poised to go up or down. However, we seek to have the Fund's performance benefit from both positive and negative returns. This means that at times we invest the portfolio in some asset categories within the broad bond market by taking long positions, while taking an unfavorable view of other asset classes by taking short positions. The other part of the portfolio utilizes uncorrelated, relative-value-based trading strategies, in which we do not have to take a stance on whether an individual market is going to rise or fall overall. Instead, we need to identify either a segment or security within a market that we believe will outperform 4 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 versus another market segment or security. We execute these portfolio investment strategies across several different global financial markets and many different asset classes. We will seek to "pair" positions, meaning that the Fund will have a long position in one segment/security of a particular market, and a short position in another segment/security. We believe this strategy can allow the Fund to benefit from favorable relative performance, regardless of the overall direction of that market. Most importantly, we closely track the risks we have assumed in both portions of the portfolio. We operate within an overall "risk budget" for the portfolio based on our objective of largely avoiding negative 12-month returns. Q Can you review the principal portfolio investment strategies you implemented during the 12-month period ended August 31, 2015? How did those strategies help or hinder the Fund's performance? A On the relative value side of the portfolio, which seeks to realize gains regardless of market direction, one strategy we use is to seek to take advantage of the slope of the spread (yield) curve for individual corporate bond issuers. For instance, the long-term debt of companies with weaker balance sheets may react more strongly to changes in business conditions than the same companies' short term debt. Within this strategy, a curve trade in retailer Radio Shack added to the Fund's performance during the period, while a curve trade in gaming company Caesars Entertainment detracted. On the whole, the Fund's long/short curve trading strategies contributed positively to returns over the 12-month period. Another positive contributor to performance was based on our view that the sharp decline in oil prices during the period had affected the investment-grade debt of energy firms to a disproportionate extent. We took a portfolio position designed to benefit from an eventual narrowing of spreads for such credits versus the overall investment-grade bond universe, while shorting an index that represented the broader investment-grade universe in an attempt to eliminate market risk. This strategy worked out well for the Fund as spreads for investment-grade energy credits eventually began to normalize against other investment-grade bonds. Our utilization of credit index tranches, while shorting the overall market index, also benefited the Fund's performance during the period. This strategy allowed the Fund to efficiently accentuate its exposure to certain index constituents that are more susceptible to overall changes in business conditions. We have been cautious with respect to credit markets in general, and high-yield corporates in particular, given the spread tightening that has occurred. We did, however, successfully take positions in corporate bonds, including high-yield issues, on weakness at various points during the period. The Fund also benefited from long positions in both commercial Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 5 mortgage-backed (CMBS) and residential mortgage-backed securities (MBS), as credit profiles of existing borrowers improved along with the domestic economic backdrop. As the period progressed, we reduced the portfolio's MBS exposure based on our view that the segment had become close to fairly valued. The Fund's currency strategies aided returns during the period as we positioned the portfolio from a macroeconomic perspective in order to benefit from the relative strengthening of the U.S. dollar. In particular, we went long the U.S. dollar in the portfolio, while shorting the euro, the Japanese yen, and the Swedish krona. In addition, we were long the U.S. dollar versus a number of currencies that were affected by fears of slowing economic growth in China; specifically, the Korean won, Taiwan dollar, Singapore dollar and Australian dollar. The Fund also benefited by taking positions in specific issuers where we believe the market's views, from a credit-default perspective, were excessively pessimistic. Specifically, we took long positions in relatively short-term obligations of such issuers, while attempting to hedge out the impact of the broader market's performance. Our management of the Fund's interest-rate exposures detracted modestly from returns during the period. The portfolio had a short-duration stance in the United States at various times as longer-term rates declined. (Duration is a measure of the sensitivity of the price - the value of principal - of a fixed-income investment to a change in interest rates, expressed as a number of years.) The short-duration position was based on our view that U.S. rates would rise as the Federal Reserve System (the Fed) solidified expectations for when it would begin to hike its benchmark rate. However, the market remained sanguine with respect to the rates outlook, and the yield curve flattened. We eventually removed the position from the portfolio, based on the significant level of market uncertainty about the U.S. economic trajectory and over the timing of any Fed action on interest rates in response to that uncertainty. On the directional side of the portfolio, we will take long or short positions in fixed-income markets and securities based on our performance outlook, while attempting to hedge out interest-rate risk. The Fund's directional trading became challenged as volatility spiked in the latter part of the period. Q Could you discuss the use of derivative positions in the portfolio during the 12-month period ended August 31, 2015, and their effect on the Fund's performance? A Virtually all of the portfolio's strategies are implemented via derivatives, and so the Fund's performance will always be affected by derivatives trading. For instance, when we want to short U.S. Treasuries, we will do so mainly by 6 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 selling Treasury futures or sometimes by buying "put" options. (A "put" option is a contractual agreement that gives the contract owner the right, but not the obligation, to sell a security at a pre-determined, fixed price for a certain period of time, regardless of the current market price of that security.) Similarly, in the currency sleeve of the Fund, we use forwards and options to gain the desired exposures. With respect to credit markets, where there are no liquid futures contracts, we may use credit default swaps to manage the portfolio's exposures. In other situations, we utilize instruments such as interest-rate or inflation swaps to implement our strategies. Q What is your assessment of the current macroeconomic climate and the opportunities it may present? A The portfolio is currently positioned neutrally with respect to U.S. interest rates. While we believe the Fed will be justified in raising rates given the relative strength of the U.S. economy, weaker conditions overseas and investment flows into the United States could keep expectations tempered with respect to longer-term Treasury yields. We believe the timing of the Fed's first rate hike is less important than the trajectory and ultimate endpoint of the increases over the next few years. That will depend on whether the U.S. economy displays sufficient strength to support a traditional rate-hiking cycle, as defined by the cycle's pace and end point. It appears to us that the market is currently somewhat more pessimistic about the U.S. economy than is the Fed. In general, asset valuations appear to be ahead of economic growth trends. At the same time, corporate balance sheets are in good shape. At present, we see relatively few directional investment opportunities in the fixed- income markets. CMBS continue to appear attractively valued on a relative basis, while spreads for corporate bonds have widened to a degree where we are now actively evaluating the asset class. The Fed's extraordinarily supportive policies have helped to underpin conditions in recent years. While the beginning of Fed policy tightening is anticipated to a large degree by the market, volatility and performance dispersion could still increase as the speculation about increased rates moves out of the realm of benign prospect and becomes a reality. Slowing economic growth in China and the impact of oil prices on different countries and sectors will also be closely monitored by investors. On balance, we expect an environment of heightened volatility across fixed- income markets that could very well provide opportunities for the portfolio's relative value strategies. In such an environment, we will be focused on identifying the opportunities that do emerge as market reactions overshoot developments on various macroeconomic fronts. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 7 Note to Shareholders: Effective June 1, 2015, Pioneer Long/Short Global Bond Fund was renamed Pioneer Long/Short Bond Fund. In addition, the investment policy to allocate at least 40% of the Fund's assets in non-U.S. securities was eliminated. The Fund's investment objectives and overall strategy did not change. Please refer to the Schedule of Investments on pages 17-27 for a full listing of Fund securities. All investments are subject to risk, including the possible loss of principal. The Fund may invest in derivative securities, such as options, futures, inverse floating-rate obligations, and swaps, among others, which can be illiquid, may disproportionately increase losses, and have a potentially large impact on the performance of the Fund. The Fund may take short positions, which involves leverage of its assets and presents additional risks. The Fund may invest in credit default swaps, which may in some cases be illiquid, and they increase credit risk since the Fund has exposure to both the issuer of the referenced obligation and the counterparty to the credit default swap. The Fund employs leverage, which increases the volatility of investment returns and subjects the Fund to magnified losses. Investments in fixed-income securities involve interest rate, credit, inflation, and reinvestment risks. When interest rates rise, the prices of fixed-income securities in the Fund will generally fall. Conversely, when interest rates fall, the prices of fixed-income securities in the Fund will generally rise. Investments in the Fund are subject to possible loss due to the financial failure of issuers of underlying securities and their inability to meet their debt obligations. Investments in high-yield or lower-rated securities are subject to greater-than-average price volatility, illiquidity and possibility of default. Prepayment risk is the chance that an issuer may exercise its right to prepay its security, if falling interest rates prompt the issuer to do so. Forced to reinvest the unanticipated proceeds at lower interest rates, the Fund would experience a decline in income and lose the opportunity for additional price appreciation. The securities issued by U.S. Government sponsored entities (e.g., FNMA, Freddie Mac) are neither guaranteed nor issued by the U.S. Government. The Fund may invest in mortgage-backed securities, which during times of fluctuating interest rates may increase or decrease more than other fixed-income securities. Mortgage-backed securities are also subject to pre-payments. 8 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, economic, and political conditions. The Fund may invest in event-linked bonds and other insurance-linked securities. The return of principal and the payment of interest on insurance-linked securities are contingent on the non-occurrence of a pre-defined "trigger" event, such as a hurricane or an earthquake of a specific magnitude. The Fund may invest in floating-rate loans; the value of collateral, if any, securing a floating-rate loan can decline or may be insufficient to meet the issuer's obligations or may be difficult to liquidate. The Fund is subject to currency risk, meaning that the Fund could experience losses based on changes in the exchange rate between non-U.S. currencies and the U.S. dollar. The Fund is non-diversified, which means that it can invest a large percentage of its assets in the securities of any one or more issuers. This increases the Fund's potential risk exposure. These risks may increase share price volatility. There is no assurance that these and other strategies used by the Fund will be successful. Please see the prospectus for a more complete discussion of the Fund's risks. Before investing, consider the product's investment objectives, risks, charges and expenses. Contact your advisor or Pioneer Investments for a prospectus or summary prospectus containing this information. Read it carefully. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. Past performance is no guarantee of future results. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 9 Portfolio Summary | 8/31/15 Portfolio Diversification -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] U.S. Government Securities 58.7% Temporary Cash Investment 21.1% Collateralized Mortgage Obligations 9.3% International Corporate Bonds 5.3% Asset Backed Securities 2.8% U.S. Corporate Bonds 2.1% U.S. Preferred Stocks 0.7% 10 Largest Holdings -------------------------------------------------------------------------------- (As a percentage of total long-term holdings)* 1. U.S. Treasury Bills, 0.0%, 9/10/15 8.81% -------------------------------------------------------------------------------- 2. U.S. Treasury Bills, 0.0%, 11/5/15 6.52 -------------------------------------------------------------------------------- 3. U.S. Treasury Bills, 0.0%, 10/29/15 6.23 -------------------------------------------------------------------------------- 4. U.S. Treasury Bills, 0.0%, 9/3/15 6.15 -------------------------------------------------------------------------------- 5. U.S. Cash Management Bills, 0.0%, 9/15/15 6.15 -------------------------------------------------------------------------------- 6. U.S. Treasury Note, Floating Rate Note, 1/31/17 6.12 -------------------------------------------------------------------------------- 7. U.S. Treasury Note, Floating Rate Note, 4/30/17 6.12 -------------------------------------------------------------------------------- 8. U.S. Treasury Note, Floating Rate Note, 7/31/16 6.12 -------------------------------------------------------------------------------- 9. U.S. Treasury Note, Floating Rate Note, 10/31/16 6.12 -------------------------------------------------------------------------------- 10. U.S. Treasury Note, Floating Rate Note, 4/30/16 6.12 -------------------------------------------------------------------------------- * This list excludes temporary cash investments and derivative instruments. Due to the exclusion of derivatives, the list may not represent the Fund's market exposures. See the Schedule of Investments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 10 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 Prices and Distributions |8/31/15 Net Asset Value per Share -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Class 8/31/15 8/31/14 -------------------------------------------------------------------------------- A $9.95 $10.05 -------------------------------------------------------------------------------- C $9.87 $10.00 -------------------------------------------------------------------------------- Y $9.97 $10.07 -------------------------------------------------------------------------------- Distributions per Share: 9/1/14-8/31/15 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains -------------------------------------------------------------------------------- A $0.2127 $-- $-- -------------------------------------------------------------------------------- C $0.1634 $-- $-- -------------------------------------------------------------------------------- Y $0.2303 $-- $-- -------------------------------------------------------------------------------- Index Definitions -------------------------------------------------------------------------------- The Bank of America Merrill Lynch (BofA ML) 3-Month US Treasury Bill Index is an unmanaged market index of U.S. Treasury securities maturing in 90 days, that assumes reinvestment of all income. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. It is not possible to invest directly in an index. The index defined here pertains to the "Value of $10,000 Investment" and "Value of $5 Million Investment" charts appearing on pages 12-14. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 11 Performance Update | 8/31/15 Class A Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class A shares of Pioneer Long/Short Bond Fund at public offering price during the periods shown, compared to that of the Bank of America Merrill Lynch (BofA ML) 3-month US Treasury Bill Index. Average Semiannual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- Net Public BofA ML Asset Offering 3-Month Value Price U.S. Treasury Period (NAV) (POP) Bill Index -------------------------------------------------------------------------------- Life-of-Class (12/30/13) 0.99% -1.76% 0.03% 1 Year 1.14 -3.37 0.03 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014, as revised June 1, 2015) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.83% 1.64% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Long/Short BofA ML 3-month Bond Fund US Treasury Bill Index 12/13 $ 9,550 $ 10,000 8/14 $ 9,599 $ 10,003 8/15 $ 9,709 $ 10,005 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 4.50% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2016, for Class A shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 12 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 Performance Update | 8/31/15 Class C Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class C shares of Pioneer Long/Short Bond Fund during the periods shown, compared to that of the Bank of America Merrill Lynch (BofA ML) 3-month US Treasury Bill Index. Average Semiannual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- BofA ML 3-Month If If U.S. Treasury Period Held Redeemed Bill Index -------------------------------------------------------------------------------- Life-of-Class (12/30/13) 0.21% 0.21% 0.03% 1 Year 0.34 0.34 0.03 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014, as revised June 1, 2015) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 3.57% 2.39% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Long/Short BofA ML 3-month Bond Fund US Treasury Bill Index 12/13 $ 10,000 $ 10,000 8/14 $ 10,000 $ 10,003 8/15 $ 10,034 $ 10,005 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2016, for Class C shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 13 Performance Update | 8/31/15 Class Y Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Class Y shares of Pioneer Long/Short Bond Fund during the periods shown, compared to that of the Bank of America Merrill Lynch (BofA ML) 3-month US Treasury Bill Index. Average Semiannual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- Net BofA ML Asset 3-Month Value U.S. Treasury Period (NAV) Bill Index -------------------------------------------------------------------------------- Life-of-Class (12/30/13) 1.21% 0.03% 1 Year 1.32 0.03 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014, as revised June 1, 2015) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.57% 1.39% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Long/Short BofA ML 3-month Bond Fund US Treasury Bill Index 12/13 $ 5,000,000 $ 5,000,000 8/14 $ 5,035,000 $ 5,001,378 8/15 $ 5,101,671 $ 5,002,692 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2016, for Class Y shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 14 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value (divided by) $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Long/Short Bond Fund Based on actual returns from March 1, 2015, through August 31, 2015. -------------------------------------------------------------------------------- Share Class A C Y -------------------------------------------------------------------------------- Beginning Account Value on 3/1/15 $1,000.00 $1,000.00 $1,000.00 -------------------------------------------------------------------------------- Ending Account Value (after expenses) $ 990.99 $ 986.92 $ 991.00 on 8/31/15 -------------------------------------------------------------------------------- Expenses Paid During Period* $ 7.98 $ 11.72 $ 6.72 -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratio of the underlying funds. These combined totals were 1.59%, 2.34%, and 1.34% for Class A, Class C and Class Y shares respectively. These combined ratios were multiplied by the average account value over the period, and then multiplied by 184/365 (to reflect the one-half year period). Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 15 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Long/Short Bond Fund Based on a hypothetical 5% return per year before expenses, reflecting the period from March 1, 2015, through August 31, 2015. -------------------------------------------------------------------------------- Share Class A C Y -------------------------------------------------------------------------------- Beginning Account Value on 3/1/15 $1,000.00 $1,000.00 $1,000.00 -------------------------------------------------------------------------------- Ending Account Value (after expenses) $1,017.19 $1,013.41 $1,018.45 on 8/31/15 -------------------------------------------------------------------------------- Expenses Paid During Period* $ 8.08 $ 11.88 $ 6.82 -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratio of the underlying funds. These combined totals were 1.59%, 2.34%, and 1.34% for Class A, Class C and Class Y shares respectively. These combined ratios were multiplied by the average account value over the period, and then multiplied by 184/365 (to reflect the one-half year period). 16 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 Schedule of Investments | 8/31/15 ------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ------------------------------------------------------------------------------------------------------------- PREFERRED STOCKS -- 0.5% DIVERSIFIED FINANCIALS -- 0.5% Investment Banking & Brokerage -- 0.5% 10,000 7.12 Morgan Stanley, Floating Rate Note (Perpetual) $ 277,600 --------------- Total Diversified Financials $ 277,600 ------------------------------------------------------------------------------------------------------------- TOTAL PREFERRED STOCKS (Cost $284,103) $ 277,600 ------------------------------------------------------------------------------------------------------------- ASSET BACKED SECURITIES -- 2.9% BANKS -- 0.3% Thrifts & Mortgage Finance -- 0.3% 40,013 1.50 First Franklin Mortgage Loan Trust 2003-FFC, Floating Rate Note, 11/25/32 $ 38,299 41,165 Icon Brand Holdings LLC, 4.229%, 1/26/43 (144A) 41,362 26,895 3.20 Irwin Whole Loan Home Equity Trust 2003-C, Floating Rate Note, 6/25/28 26,867 44,920 5.47 New Century Home Equity Loan Trust, Floating Rate Note, 8/25/34 45,518 --------------- $ 152,046 --------------- Total Banks $ 152,046 ------------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 2.6% Other Diversified Financial Services -- 0.2% 85,000 TAL Advantage V LLC, 4.1%, 2/22/39 $ 85,552 ------------------------------------------------------------------------------------------------------------- Asset Management & Custody Banks -- 2.4% 630,000 RMAT 2015-1 LLC, 5.0%, 7/27/20 (Step) (144A) $ 618,975 630,000 VOLT XXXVII LLC, 4.375%, 7/25/45 (Step) (144A) 618,715 --------------- $ 1,237,690 --------------- Total Diversified Financials $ 1,323,242 ------------------------------------------------------------------------------------------------------------- TOTAL ASSET BACKED SECURITIES (Cost $1,480,461) $ 1,475,288 ------------------------------------------------------------------------------------------------------------- COLLATERALIZED MORTGAGE OBLIGATIONS -- 9.4% BANKS -- 9.4% Thrifts & Mortgage Finance -- 9.4% 300,000 1.16 Alternative Loan Trust 2005-J4, Floating Rate Note, 7/25/35 $ 271,258 185,000 2.72 BAMLL Commercial Mortgage Securities Trust 2014-INLD, Floating Rate Note, 12/17/29 (144A) 170,572 100,000 Bear Stearns Commercial Mortgage Securities Trust 2006-PWR14, 5.273%, 12/11/38 100,754 115,000 2.78 Carefree Portfolio Trust 2014-CARE, Floating Rate Note, 11/15/19 (144A) 112,257 240,000 4.80 CFCRE 2015-RUM Mortgage Trust, Floating Rate Note, 7/15/30 (144A) 240,081 The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 17 Schedule of Investments | 8/31/15 (continued) ------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) unaudited) Value ------------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 280,000 3.21 Citigroup Commercial Mortgage Trust 2014-GC23 REMICS, Floating Rate Note, 7/12/47 (144A) $ 202,629 175,000 5.57 COBALT Commercial Mortgage Trust 2007-C2, Floating Rate Note, 4/15/47 175,483 175,000 COMM 2006-C8 Mortgage Trust, 5.377%, 12/10/46 175,108 490,000 5.80 COMM 2007-C9 Mortgage Trust, Floating Rate Note, 12/10/49 (144A) 463,852 175,000 5.23 Credit Suisse First Boston Mortgage Securities Corp., Floating Rate Note, 12/17/40 174,776 380,000 4.89 CSMC Trust 2015-SAND, Floating Rate Note, 8/15/30 (144A) 380,006 110,000 3.38 GAHR Commercial Mortgage Trust 2015-NRF, Floating Rate Note, 12/15/19 (144A) 103,013 125,000 4.94 GS Mortgage Securities Corp II Series 2005-GG4, Floating Rate Note, 7/10/39 122,819 200,000 JP Morgan Chase Commercial Mortgage Securities Trust 2006-CIBC16, 5.623%, 5/12/45 201,789 725,000 5.35 LB-UBS Commercial Mortgage Trust 2005-C7, Floating Rate Note, 11/15/40 (144A) 739,720 150,000 5.28 LB-UBS Commercial Mortgage Trust 2006-C1, Floating Rate Note, 2/15/41 150,779 55,000 5.48 ML-CFC Commercial Mortgage Trust 2006-3, Floating Rate Note, 7/12/46 55,517 320,000 4.80 PFP 2015-2, Ltd., Floating Rate Note, 7/14/34 (144A) 320,018 250,000 5.56 Wachovia Bank Commercial Mortgage Trust Series 2005-C22, Floating Rate Note, 12/15/44 250,310 100,000 5.95 Wachovia Bank Commercial Mortgage Trust Series 2007-C34, Floating Rate Note, 5/15/46 103,486 195,000 Wells Fargo Commercial Mortgage Trust 2010-C1, 4.0%, 11/18/43 (144A) 178,417 200,000 3.70 Wells Fargo Commercial Mortgage Trust 2014-TISH, Floating Rate Note, 1/15/27 (144A) 196,881 --------------- $ 4,889,525 --------------- Total Banks $ 4,889,525 ------------------------------------------------------------------------------------------------------------- TOTAL COLLATERALIZED MORTGAGE OBLIGATIONS (Cost $4,874,370) $ 4,889,525 ------------------------------------------------------------------------------------------------------------- CORPORATE BONDS -- 7.6% ENERGY -- 3.1% Integrated Oil & Gas -- 2.4% 1,251,000 Petrobras Global Finance BV, 3.875%, 1/27/16 $ 1,250,336 ------------------------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 0.7% 390,000 Chesapeake Energy Corp., 3.25%, 3/15/16 $ 383,175 --------------- Total Energy $ 1,633,511 ------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 18 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ------------------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 0.9% Aerospace & Defense -- 0.9% 505,000 Bombardier, Inc., 7.5%, 3/15/18 (144A) $ 472,175 --------------- Total Capital Goods $ 472,175 ------------------------------------------------------------------------------------------------------------- BANKS -- 2.0% Diversified Banks -- 2.0% 250,000 6.50 Bank of America Corp., Floating Rate Note, 10/23/49 $ 257,500 250,000 5.90 Citigroup, Inc., Floating Rate Note (Perpetual) 245,625 250,000 6.62 Credit Agricole SA, Floating Rate Note (Perpetual) (144A) 245,138 300,000 6.50 ING Groep NV, Floating Rate Note (Perpetual) 287,812 --------------- $ 1,036,075 --------------- Total Banks $ 1,036,075 ------------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.1% Other Diversified Financial Services -- 0.1% INR 3,700,000 European Bank for Reconstruction & Development, 6.0%, 3/3/16 $ 55,414 --------------- Total Diversified Financials $ 55,414 ------------------------------------------------------------------------------------------------------------- INSURANCE -- 1.5% Reinsurance -- 1.5% 250,000 6.86 Caelus Re, Ltd., Floating Rate Note, 4/7/17 (Cat Bond) (144A) $ 256,100 250,000 4.52 Kilimanjaro Re, Ltd., Floating Rate Note, 4/30/18 (Cat Bond) (144A) 244,825 250,000 4.51 Residential Reinsurance 2012, Ltd., Floating Rate Note, 12/6/16 (Cat Bond) (144A) 252,175 --------------- $ 753,100 --------------- Total Insurance $ 753,100 ------------------------------------------------------------------------------------------------------------- TOTAL CORPORATE BONDS (Cost $4,032,810) $ 3,950,275 ------------------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATIONS -- 59.5% 2,550,000 U.S. Cash Management Bills, 0.0%, 9/15/15 (c) $ 2,549,924 2,580,000 U.S. Treasury Bills, 0.0%, 10/29/15 (c) 2,579,972 2,700,000 U.S. Treasury Bills, 0.0%, 11/5/15 (c) 2,700,054 3,650,000 U.S. Treasury Bills, 0.0%, 9/10/15 (c) 3,649,996 1,570,000 U.S. Treasury Bills, 0.0%, 9/17/15 (c) 1,570,002 30,000 U.S. Treasury Bills, 0.0%, 9/24/15 (c) 30,000 2,550,000 U.S. Treasury Bills, 0.0%, 9/3/15 (c) 2,550,000 2,535,000 0.10 U.S. Treasury Note, Floating Rate Note, 1/31/16 (d) 2,535,428 2,535,000 0.13 U.S. Treasury Note, Floating Rate Note, 1/31/17 2,537,013 2,535,000 0.10 U.S. Treasury Note, Floating Rate Note, 10/31/16 (d) 2,536,199 The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 19 Schedule of Investments | 8/31/15 (continued) ------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ------------------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATIONS -- (continued) 2,535,000 0.12 U.S. Treasury Note, Floating Rate Note, 4/30/16 (d) $ 2,535,897 2,535,000 0.12 U.S. Treasury Note, Floating Rate Note, 4/30/17 (d) 2,536,502 2,535,000 0.12 U.S. Treasury Note, Floating Rate Note, 7/31/16 2,536,262 ------------------------------------------------------------------------------------------------------------- TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATIONS (Cost $30,841,793) $ 30,847,249 ------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------- Number of Expiration Contracts Description Counterparty Strike Price Date ------------------------------------------------------------------------------------------------------------- PUT OPTIONS PURCHASED -- 1.2% 96 S&P500 EMINI Citibank NA $1,670 12/18/15 $ 131,520 96 S&P500 EMINI Citibank NA $1,985 12/18/15 484,800 --------------- $ 616,320 ------------------------------------------------------------------------------------------------------------- TOTAL OPTIONS PURCHASED (Premiums paid $295,713) $ 616,320 ------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------- Principal Amount ($) ------------------------------------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENTS -- 21.4% Commercial Papers -- 9.8% 2,550,000 BNP Paribas, Discount Note, 9/1/15 $ 2,549,993 2,550,000 Societe Generale North America, Inc., Discount Note, 9/1/15 2,550,001 --------------- $ 5,099,994 ------------------------------------------------------------------------------------------------------------- Repurchase Agreement -- 11.6% 6,000,000 $6,000,000 RBC Capital Markets LLC, 0.13%, dated 8/31/15 plus accrued interest on 9/1/15 collateralized by the following: $3,131,884 Government National Mortgage Association II, 3.0% - 4.0%, 11/20/43 - 8/20/45 $8,049 Freddie Mac Giant, 4.0%, 6/1/42 - 7/1/45 $616,483 Federal Home Loan Mortgage Corp., 2.229% - 3.673%, 9/1/40 - 5/1/45 $421,960 Federal National Mortgage Association (ARM), 2.513% - 4.866%, 9/1/33 - 6/1/45 $1,941,624 Federal National Mortgage Association, 2.5% - 4.0%, 2/1/26 - 8/1/45 $ 6,000,000 ------------------------------------------------------------------------------------------------------------- TOTAL TEMPORARY CASH INVESTMENTS (Cost $11,100,000) $ 11,099,994 ------------------------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 102.5% (Cost $52,909,250) (a) $ 53,156,251 ------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 20 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------------------------------- Number of Expiration Contracts Description Counterparty Strike Price Date Value ------------------------------------------------------------------------------------------------------------- PUT OPTIONS WRITTEN -- (1.0)% (96) S&P500 EMINI Citibank NA $1,775 12/18/15 $ (203,040) (96) S&P500 EMINI Citibank NA $1,880 12/18/15 (312,000) --------------- TOTAL PUT OPTIONS WRITTEN (Premiums received $237,087) $ (515,040) ------------------------------------------------------------------------------------------------------------- OTHER ASSETS & LIABILITIES -- (1.5)% $ (760,091) ------------------------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $ 51,881,120 ============================================================================================================= (144A) Security is exempt from registration under Rule 144A of the Securities Act of 1933. Such securities may be resold normally to qualified institutional buyers in a transaction exempt from registration. At August 31, 2015, the value of these securities amounted to $5,856,911 or 11.3% of total net assets. (Cat Bond) Catastrophe or Event Linked Bond. At August 31, 2015, the value of these securities amounted to $753,100, or 1.5% of total net assets. See Notes to Financial Statements -- Note 1I. (Perpetual) Security with no stated maturity date. (Step) Bond issued with an initial coupon rate which converts to a higher rate at a later date. REMICS Real Estate Mortgage Investment Conduits. (a) At August 31, 2015, the net unrealized appreciation on investments based on cost for federal income tax purposes of $52,914,895 was as follows: Aggregate gross unrealized appreciation for all investments in which there is an excess of value over tax cost $ 352,377 Aggregate gross unrealized depreciation for all investments in which there is an excess of tax cost over value (111,021) --------------- Net unrealized appreciation $ 241,356 =============== (b) Debt obligation with a variable interest rate. Rate shown is rate at end of period. (c) Security issued with a zero coupon. Income is earned through accretion of discount. (d) A portion of this security has been pledged as collateral for swaps contracts. NOTE: Principal amounts are denominated in U.S. Dollars unless otherwise noted: INR Indian Rupee Purchases and sales of securities (excluding temporary cash investments) for the year ended August 31, 2015 were as follows: ------------------------------------------------------------------------------------------------- Purchases Sales ------------------------------------------------------------------------------------------------- Long-Term U.S. Government $10,492,375 $ 100,008 Other Long-Term Securities $24,309,320 $ 28,553,504 The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 21 Schedule of Investments | 8/31/15 (continued) CENTRALLY CLEARED CREDIT DEFAULT SWAP AGREEMENTS -- BUY PROTECTION ------------------------------------------------------------------------------------------------------------------- Net Premiums Unrealized Notional Obligation Expiration Paid Appreciation Principal ($) Counterparty Entity/Index Coupon Date (Received) (Depreciation) ------------------------------------------------------------------------------------------------------------------- (2,915,000) Chicago Markit CDX North 1.00% 6/20/20 $ (28,400) $(24,120) Mercantile America Investment Exchange Grade Index (1,483,500) Chicago Markit CDX North 5.00% 12/20/16 (88,419) 11,376 Mercantile America High Exchange Yield Index (3,925,350) Chicago Markit CDX North 5.00% 6/20/20 (191,691) (22,899) Mercantile America High Exchange Yield Index EUR (1,375,000) Intercontinental Markit iTraxx Europe 5.00% 6/20/19 (200,148) 20,439 Exchange Consumer Index $(508,658) $(15,204) =================================================================================================================== CREDIT DEFAULT SWAP AGREEMENTS -- BUY PROTECTION ------------------------------------------------------------------------------------------------------------------- Net Premiums Unrealized Notional Obligation Expiration Paid Appreciation Principal ($) Counterparty Entity/Index Coupon Date (Received) (Depreciation) ------------------------------------------------------------------------------------------------------------------- (187,500) Barclays Morgan Stanley 1.00% 9/20/20 $ (1,573) $ 397 Bank Plc (734,400) Citibank NA Markit CDX North 5.00% 12/20/18 (145,411) 30,101 America High Yield Index (525,000) Goldman Sachs Domtar Corp. 1.00% 9/20/20 13,146 1,437 International (335,200) Goldman Sachs MBIA, Inc. 5.00% 9/20/20 93,018 1,720 International EUR (1,450,000) Goldman Sachs Norske 5.00% 9/20/17 779,624 (957) International Skogindustrier ASA (187,500) JPMorgan Bank of America 1.00% 9/20/20 (2,792) 759 Chase Bank NA Corp. (550,000) JPMorgan Best Buy Co., Inc. 5.00% 9/20/20 (69,352) (15,398) Chase Bank NA (187,500) JPMorgan Citigroup, Inc. 1.00% 9/20/20 (1,853) 720 Chase Bank NA EUR (210,000) JPMorgan Credit Agricole SA 1.00% 9/20/20 (2,752) (318) Chase Bank NA EUR (225,000) JPMorgan ING Bank NV 1.00% 9/20/20 (3,728) (605) Chase Bank NA ------------------------------------------------------------------------------------------------------------------- $ 658,327 $ 17,856 =================================================================================================================== The accompanying notes are an integral part of these financial statements. 22 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 CREDIT DEFAULT SWAP AGREEMENTS -- SELL PROTECTION --------------------------------------------------------------------------------------------------------------------------------- Net Premiums Unrealized Notional Obligation Credit Expiration Paid Appreciation Principal ($)(1) Counterparty Entity/Index Coupon Rating(2) Date (Received) (Depreciation) --------------------------------------------------------------------------------------------------------------------------------- EUR 825,000 Barclays Bank Abengoa SA 5.00% B+ 12/20/16 $ (67,830) $ (215,046) Plc 150,000 Barclays Bank Ally Financial, Inc. 5.00% BB+ 9/20/20 23,155 785 Plc 600,000 Barclays Bank Apache Corp. 1.00% BBB+ 9/20/20 (16,959) 1,475 Plc 450,000 Barclays Bank Apache Corp. 1.00% BBB+ 9/20/20 (9,989) (1,624) Plc 800,000 Barclays Bank Devon Energy 1.00% BBB+ 9/20/20 (31,376) 13,009 Plc Corp. 520,000 Barclays Bank Frontier 5.00% BB- 9/20/20 (5,248) (1,351) Plc Communications Corp. 540,000 Barclays Bank Mcclatchy Co. 5.00% CCC 6/20/16 -- 3,733 Plc EUR 250,000 Barclays Bank Norske 5.00% CCC- 12/20/15 (52,243) 34,398 Plc Skogindustrier ASA 485,000 Barclays Bank Toys R Us, Inc. 5.00% CCC 3/20/16 (2,425) (11,590) Plc 500,000 Citibank NA Energy Transfer 1.00% BBB- 9/20/20 (13,628) (3,858) Partners LP 550,000 Citibank NA Energy Transfer 1.00% BBB- 9/20/20 (17,509) (1,725) Partners LP 550,000 Citibank NA Kinder Morgan, 1.00% BBB- 9/20/20 (20,497) (8,070) Inc. 645,000 Citibank NA Markit CDX 5.00% BBB+ 12/20/17 (31,605) (26,415) North America Investment Grade Index EUR 1,250,000 Citibank NA Markit iTraxx 1.00% A- 6/20/19 (108,271) 64,448 Europe Index 250,000 Citibank NA Parker Drilling Co. 5.00% B+ 9/20/20 (16,875) (9,070) 300,000 Citibank NA Parker Drilling Co. 5.00% B+ 9/20/20 (30,000) (1,134) 1,080,000 Goldman Sachs AK Steel Corp. 5.00% B- 12/20/16 (27,000) 67 International 525,000 Goldman Sachs Ally Financial, Inc. 5.00% BB+ 9/20/20 80,424 3,364 International 300,000 Goldman Sachs Claire's Stores 5.00% CC 12/20/15 (12,000) (2,012) International Inc. 525,000 Goldman Sachs iHeart 5.00% CCC- 12/20/15 (14,437) 13,052 International Communications 825,000 Goldman Sachs iHeart 5.00% CCC- 12/20/16 (45,375) (64,923) International Communications The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 23 Schedule of Investments | 8/31/15 (continued) CREDIT DEFAULT SWAP AGREEMENTS -- SELL PROTECTION (continued) --------------------------------------------------------------------------------------------------------------------------------- Net Premiums Unrealized Notional Obligation Credit Expiration Paid Appreciation Principal ($)(1) Counterparty Entity/Index Coupon Rating(2) Date (Received) (Depreciation) --------------------------------------------------------------------------------------------------------------------------------- 525,000 Goldman Sachs Frontier 5.00% BB- 9/20/20 $ (9,104) $ 2,441 International Communications Corp. 335,200 Goldman Sachs MBIA, Inc. 5.00% A- 12/20/16 (38,548) (4,676) International EUR 225,000 Goldman Sachs Norske 5.00% CCC- 3/20/16 (4,933) (36,650) International Skogindustrier ASA EUR 1,450,000 Goldman Sachs Norske 5.00% CCC- 9/20/20 (1,153,194) (349) International Skogindustrier ASA 140,000 Goldman Sachs Peabody Energy 5.00% B- 3/20/16 (10,500) (5,994) International Corp. 525,000 Goldman Sachs Sears Roebuck 5.00% B 12/20/15 (21,000) 25,076 International Acceptance Corp. 300,000 Goldman Sachs Toys R Us, Inc. 5.00% CCC 12/20/15 (10,500) 8,575 International EUR 400,000 JPMorgan Abengoa SA 5.00% B+ 12/20/15 (31,981) 4,624 Chase Bank NA 500,000 JPMorgan Diamond 1.00% NR 9/20/20 (48,109) (10,647) Chase Bank Offshore Drill NA 550,000 JPMorgan Diamond 1.00% BBB+ 9/20/20 (71,284) 6,653 Chase Bank Offshore Drilling, NA Inc. 500,000 JPMorgan Kinder Morgan, 1.00% BBB- 9/20/20 (21,839) (4,131) Chase Bank Inc. NA 500,000 JPMorgan Nabors 1.00% BBB 9/20/20 (36,630) (14,106) Chase Bank Industries, Inc. NA 550,000 JPMorgan Nabors 1.00% BBB 9/20/20 (49,890) (5,919) Chase Bank Industries, Inc. NA 500,000 JPMorgan Noble Holding 1.00% BBB 9/20/20 (54,147) (25,801) Chase Bank International, Ltd. NA EUR 250,000 JPMorgan Norske 5.00% CCC- 12/20/15 (50,506) 32,661 Chase Bank Skogindustrier ASA NA 500,000 JPMorgan Weatherford 1.00% BBB- 9/20/20 (36,630) (39,143) Chase Bank International, Ltd. NA The accompanying notes are an integral part of these financial statements. 24 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 CREDIT DEFAULT SWAP AGREEMENTS -- SELL PROTECTION (continued) --------------------------------------------------------------------------------------------------------------------------------- Net Premiums Unrealized Notional Obligation Credit Expiration Paid Appreciation Principal ($)(1) Counterparty Entity/Index Coupon Rating(2) Date (Received) (Depreciation) --------------------------------------------------------------------------------------------------------------------------------- 550,000 JPMorgan Weatherford 1.00% BBB- 9/20/20 $ (68,188) $ (15,162) Chase Bank International, Ltd. NA 525,000 Morgan JC Penney 5.00% CCC- 12/20/16 (15,750) 38,136 Stanley Capital Corp., Inc. Services LLC 400,000 Morgan Markit CDX 5.00% BBB+ 12/20/17 (14,500) (21,482) Stanley Capital North America Services LLC Investment Grade Index 250,000 Morgan MBIA, Inc. 5.00% A- 12/20/15 (3,125) 2,432 Stanley Capital Services LLC 250,000 Morgan MBIA, Inc. 5.00% A- 12/20/15 (13,750) 13,057 Stanley Capital Services LLC 820,000 Morgan Sears Roebuck 5.00% B 12/20/16 (22,550) 3,699 Stanley Capital Acceptance Corp. Services LLC --------------------------------------------------------------------------------------------------------------------------------- $(2,206,346) $(259,193) ================================================================================================================================= (1) The notional amount is the maximum amount that a seller of credit protection would be obligated to pay upon occurrence of a credit event. (2) Based on Standard & Poor's rating of the issuer or weighted average of all the underlying securities of the index. NR Not rated by either S&P. NOTE: Principal amounts are denominated in U.S. Dollars unless otherwise noted: EUR Euro The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 25 Schedule of Investments | 8/31/15 (continued) INTEREST RATE SWAP AGREEMENTS --------------------------------------------------------------------------------------------------------------------------------- Annual Premiums Net Notional Pay / Floating Fixed Expiration Paid Unrealized Principal ($) Counterparty Receive Rate Rate Date (Received) Depreciation --------------------------------------------------------------------------------------------------------------------------------- (442,126) J.P. Morgan Receive LIBOR USD 1.810% 8/7/19 $2 $ (7,194) Chase Bank 3 Month NA (850,473) J.P. Morgan Receive LIBOR USD 2.200% 5/6/25 7 (3,578) Chase Bank 3 Month NA --------------------------------------------------------------------------------------------------------------------------------- $9 $ (10,772) ================================================================================================================================= Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Level 1 - quoted prices in active markets for identical securities. Level 2 - other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) See Notes to Financial Statements -- Note 1A. Level 3 - significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) See Notes to Financial Statements -- Note 1A. Generally, equity securities are categorized as Level 1, fixed income securities and senior loans as Level 2 and securities valued using fair value methods (other than prices supplied by independent pricing services or broker-dealers) are categorized as Level 3. See Notes to Financial Statements -- Note 1A. The following is a summary of the inputs used as of August 31, 2015, in valuing the Fund's assets: -------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total -------------------------------------------------------------------------------- Preferred Stocks $ 277,600 $ -- $ -- $ 277,600 Asset Backed Securities -- 1,475,288 -- 1,475,288 Collateralized Mortgage Obligations -- 4,889,525 -- 4,889,525 Corporate Bonds -- 3,950,275 -- 3,950,275 U.S. Government and Agency Obligations -- 30,847,249 -- 30,847,249 Put Options Purchased 616,320 -- -- 616,320 Commercial Papers 5,099,994 -- 5,099,994 Repurchase Agreement -- 6,000,000 -- 6,000,000 -------------------------------------------------------------------------------- Total $ 893,920 $52,262,331 $ -- $53,156,251 ================================================================================ The accompanying notes are an integral part of these financial statements. 26 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 -------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total -------------------------------------------------------------------------------- Other Financial Instruments Unrealized Depreciation on Credit Default Swaps $ -- $ (256,541) $ -- $ (256,541) Unrealized Depreciation on Interest Rate Swaps -- (10,772) -- (10,772) Written Options (515,040) -- -- (515,040) Unrealized Depreciation on Futures Contracts (547) -- -- (547) Unrealized Appreciation on Forward Foreign Currency Contracts -- 72,079 -- 72,079 Unrealized Depreciation on Forward Foreign Currency Contracts -- (63,816) -- (63,816) -------------------------------------------------------------------------------- Total Other Financial Instruments $ (515,587) $ (259,050) $ -- $ (774,637) ================================================================================ During the year ended August 31, 2015, there were no transfers between Levels 1, 2 and 3. The following is a summary of the fair valuation of certain Fund's assets as of August 31, 2015: -------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total -------------------------------------------------------------------------------- Assets: Foreign currencies, at value $ -- $ 35,341 $ -- $ 35,341 Centrally cleared swap collateral -- 517,984 -- 517,984 Variation margin for futures contracts 152 -- -- 152 Variation margin for centrally cleared swap contracts -- 8,560 -- 8,560 -------------------------------------------------------------------------------- Total $ 152 $561,885 $ -- $562,037 ================================================================================ The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 27 Statement of Assets and Liabilities | 8/31/15 ASSETS: Investment in securities (cost $46,909,250) $47,156,251 Repurchase agreements (cost $6,000,000) 6,000,000 ------------------------------------------------------------------------------------- Total investment in securities (cost $52,909,250) 53,156,251 Cash 2,617,561 Foreign currencies, at value (cost $35,212) 35,341 Centrally cleared swap collateral 517,984 Receivables -- Investment securities sold 194,293 Swap payments 687,283 Interest 76,781 Due from Pioneer Investment Management, Inc. 50,214 Variation margin for futures contracts 152 Variation margin for centrally cleared swap contracts 8,560 Net unrealized appreciation on forward foreign currency contracts 72,079 Other assets 61,628 ------------------------------------------------------------------------------------- Total assets $57,478,127 ===================================================================================== LIABILITIES: Payables -- Investment securities purchased $ 2,549,928 Fund shares repurchased 10,134 Trustee fees 1,191 Net unrealized depreciation on forward foreign currency contracts 63,816 Net unrealized depreciation on swap contracts 267,313 Net unrealized depreciation on futures contracts 547 Swap contracts, net premiums received 2,056,668 Written options (premiums received $237,087) 515,040 Due to affiliates 50,450 Accrued expenses 81,920 ------------------------------------------------------------------------------------- Total liabilities $ 5,597,007 ===================================================================================== NET ASSETS: Paid-in capital $52,397,551 Undistributed of net investment income 677,498 Accumulated net realized loss on investments, futures contracts, written options, swap contracts, and foreign currency transactions (907,056) Net unrealized appreciation on investments 247,001 Net unrealized depreciation on futures contracts (547) Net unrealized depreciation on written options (277,953) Net unrealized depreciation on swap contracts (267,313) Net unrealized appreciation on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 11,939 ------------------------------------------------------------------------------------- Total net assets $51,881,120 ===================================================================================== NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $13,075,779/1,314,809 shares) $ 9.95 Class C (based on $9,605,675/973,712 shares) $ 9.87 Class Y (based on $29,199,666/2,930,222 shares) $ 9.97 MAXIMUM OFFERING PRICE: Class A ($9.95 / 95.5%) $ 10.42 ===================================================================================== The accompanying notes are an integral part of these financial statements. 28 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 Statement of Operations For the Year Ended 8/31/15 INVESTMENT INCOME: Dividends $ 122,876 Interest 384,583 ------------------------------------------------------------------------------------------ Total investment income $ 507,459 ------------------------------------------------------------------------------------------ EXPENSES: Management fees $ 330,714 Distribution fees Class A 25,401 Class C 88,312 Transfer Agent fees Class A 823 Class C 415 Class Y 320 Shareholder communications expense 2,626 Administrative reimbursement 25,615 Custodian fees 51,464 Registration fees 59,242 Professional fees 92,621 Printing fees 40,270 Pricing fees 19,308 Fees and expenses of nonaffiliated Trustees 6,614 Miscellaneous 16,642 ------------------------------------------------------------------------------------------ Total expenses $ 760,387 ------------------------------------------------------------------------------------------ Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (237,219) ------------------------------------------------------------------------------------------ Net expenses $ 523,168 ------------------------------------------------------------------------------------------ Net investment loss $ (15,709) ------------------------------------------------------------------------------------------ REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS, FUTURES CONTRACTS, WRITTEN OPTIONS, SWAP CONTRACTS AND FOREIGN CURRENCY TRANSACTIONS: Net realized gain (loss) on: Investments $ (1,490,510) Futures contracts (322,703) Written options 173,103 Swap contracts 232,074 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 2,110,907 $ 702,871 ------------------------------------------------------------------------------------------ Change in net unrealized appreciation (depreciation) on: Investments $ 188,323 Futures contracts 52,017 Written options (315,996) Swap contracts (236,186) Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (504,620) $ (816,462) ------------------------------------------------------------------------------------------ Net realized and unrealized loss on investments, futures contracts, written options, swap contracts, and foreign currency transactions $ (113,591) ------------------------------------------------------------------------------------------ Net decrease in net assets resulting from operations $ (129,300) ========================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 29 Statements of Changes in Net Assets ------------------------------------------------------------------------------------------------- Year Ended 12/30/13 (a) 8/31/15 to 8/31/14 ------------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income (loss) $ (15,709) $ (74,108) Net realized gain (loss) on investments, futures contracts, written options, swap contracts, and foreign currency transactions 702,871 (351,336) Change in net unrealized appreciation (depreciation) on investments, futures contracts, swap contracts, and foreign currency transactions (816,462) 529,589 ------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from operations $ (129,300) $ 104,145 ------------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.21 and $0.00 per share, respectively) $ (183,685) $ -- Class C ($0.16 and $0.00 per share, respectively) (139,321) -- Class Y ($0.23 and $0.00 per share, respectively) (194,215) -- ------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (517,221) $ -- ------------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: (b)(c) Net proceeds from sale of shares $28,019,541 $ 25,393,752 Reinvestment of distributions 517,221 -- Cost of shares repurchased (1,507,006) (12) ------------------------------------------------------------------------------------------------- Net increase in net assets resulting from Fund share transactions $27,029,756 $ 25,393,740 ------------------------------------------------------------------------------------------------- Net increase in net assets $26,383,235 $ 25,497,885 NET ASSETS: Beginning of year $25,497,885 $ -- ------------------------------------------------------------------------------------------------- End of year $51,881,120 $ 25,497,885 ------------------------------------------------------------------------------------------------- Undistributed (distributions in excess) of net investment income $ 677,498 $ (15,210) ------------------------------------------------------------------------------------------------- (a) Class A, Class C and Class Y shares commenced operations on December 30, 2013. (b) At August 31, 2015, PIM owned 48.9% of the value of the outstanding shares of Pioneer Long/Short Bond Fund. (c) At August 31, 2015, Pioneer Asset Allocation Trust owned 35.0% of the value of outstanding shares of Pioneer Long/Short Bond Fund. The accompanying notes are an integral part of these financial statements. 30 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------- Year Year Year Year Ended Ended Ended Ended 8/31/15 8/31/15 8/31/14 8/31/14 Shares Amount Shares Amount ------------------------------------------------------------------------------------- Class A* Shares sold 572,122 $ 5,771,154 855,960 $8,559,806 Reinvestment of distributions 18,675 183,683 -- -- Less shares repurchased (131,947) (1,316,466) (1) (12) ------------------------------------------------------------------------------------- Net increase 458,850 $ 4,638,371 855,959 $8,559,794 ===================================================================================== Class C* Shares sold 131,285 $ 1,318,030 839,743 $8,397,613 Reinvestment of distributions 14,202 139,323 -- -- Less shares repurchased (11,518) (113,947) -- -- ------------------------------------------------------------------------------------- Net increase 133,969 $ 1,343,406 839,743 $8,397,613 ===================================================================================== Class Y* Shares sold 2,074,561 $20,930,357 843,613 $8,436,333 Reinvestment of distributions 19,737 194,215 -- -- Less shares repurchased (7,689) (76,593) -- -- ------------------------------------------------------------------------------------- Net increase 2,086,609 $21,047,979 843,613 $8,436,333 ===================================================================================== * Class A, Class C and Class Y shares commenced operations on December 30, 2013. The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 31 Financial Highlights ---------------------------------------------------------------------------------------- Year Ended 12/30/13 8/31/15 to 8/31/14 ---------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 10.05 $ 10.00 ---------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.08 $ (0.02) Net realized and unrealized gain (loss) on investments 0.03 0.07 ---------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.11 $ 0.05 ---------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.21) $ -- ---------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.10) $ 0.05 ---------------------------------------------------------------------------------------- Net asset value, end of period $ 9.95 $ 10.05 ======================================================================================== Total return* 1.14% 0.50%*** Ratio of net expenses to average net assets 1.55% 1.55%** Ratio of net investment income (loss) to average net assets 0.12% (0.27)%** Portfolio turnover rate 176% 65%** Net assets, end of period (in thousands) $13,076 $ 8,604 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 2.31% 2.74%** Net investment income (loss) to average net assets (0.64)% (1.46)%** ======================================================================================== * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. *** Not Annualized. The accompanying notes are an integral part of these financial statements. 32 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 ---------------------------------------------------------------------------------------- Year Ended 12/30/13 8/31/15 to 8/31/14 ---------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 10.00 $ 10.00 ---------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ (0.02) $ (0.07) Net realized and unrealized gain (loss) on investments 0.05 0.07 ---------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.03 $ -- ---------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.16) $ -- ---------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.13) $ -- ---------------------------------------------------------------------------------------- Net asset value, end of period $ 9.87 $ 10.00 ======================================================================================== Total return* 0.34% 0.00%*** Ratio of net expenses to average net assets 2.30% 2.30%** Ratio of net investment income (loss) to average net assets (0.51)% (1.03)%** Portfolio turnover rate 176% 65%** Net assets, end of period (in thousands) $ 9,606 $ 8,399 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 3.06% 3.48%** Net investment income (loss) to average net assets (1.27)% (2.21)%** ======================================================================================== * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. *** Not Annualized. The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 33 Financial Highlights (continued) ---------------------------------------------------------------------------------------- Year Ended 12/30/13 8/31/15 to 8/31/14 ---------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 10.07 $ 10.00 ---------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.15 $ (0.00)(a) Net realized and unrealized gain (loss) on investments (0.02) 0.07 ---------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.13 $ 0.07 ---------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.23) $ -- ---------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.10) $ 0.07 ---------------------------------------------------------------------------------------- Net asset value, end of period $ 9.97 $ 10.07 ======================================================================================== Total return* 1.32% 0.70%*** Ratio of net expenses to average net assets 1.30% 1.30%** Ratio of net investment income (loss) to average net assets 0.14% (0.02)%** Portfolio turnover rate 176% 65%** Net assets, end of period (in thousands) $29,200 $ 8,494 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 2.04% 2.48%** Net investment income (loss) to average net assets (0.60)% (1.20)%** ======================================================================================== * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. *** Not Annualized. (a) Amount rounds to less than $0.01 or $(0.01) per share. The accompanying notes are an integral part of these financial statements. 34 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 Notes to Financial Statements | 8/31/15 1. Organization and Significant Accounting Policies Pioneer Long/Short Bond Fund, (formerly, Pioneer Long/Short Global Bond Fund) (the Fund), is one of five portfolios comprising Pioneer Series Trust V, a Delaware statutory trust. The Fund is registered under the Investment Company Act of 1940 as a non-diversified, open-end management investment company. The Fund's investment objective is to seek total return. The Fund offers three classes of shares designated as Class A, Class C, and Class Y shares. Class A, Class C and Class Y shares commenced operations on December 30, 2013. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different rates of class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends from net investment income earned by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per-share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per-share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Each share class has exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. There is no distribution plan for Class Y shares. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gains and losses on investments during the reporting period. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements: Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 35 A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Fund is computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. Fixed income securities are valued at prices supplied by independent pricing services, which consider such factors as market prices, market events, quotations from one or more brokers, Treasury spreads, yields, maturities and ratings. Valuations may be supplemented by dealers and other sources, as required. Senior floating rate loan interests (senior loans) are valued in accordance with guidelines established by the Board of Trustees at the mean between the last available bid and asked prices from one or more brokers or dealers as obtained from Loan Pricing Corporation, an independent pricing service. If price information is not available from Loan Pricing Corporation, or if the price information is deemed to be unreliable, price information will be obtained from an alternative loan interest pricing service. If no reliable price quotes are available from either the primary or alternative pricing service, broker quotes will be solicited. Event-linked bonds are valued at the bid price obtained from an independent third party pricing service. Other insurance-linked securities may be valued at the bid price obtained from an independent pricing service, or through a third party using a pricing matrix, insurance industry valuation models, or other fair value methods or techniques to provide an estimated value of the instrument. Equity securities that have traded on an exchange are valued at the last sale price on the principal exchange where they are traded. Equity securities that have not traded on the date of valuation, or securities for which sale prices are not available, generally are valued using the mean between the last bid and asked prices. Shares of money market mutual funds are valued at such funds' net asset value. Cash may include overnight time deposits at approved financial institutions. Trading in foreign securities is substantially completed each day at various times prior to the close of the NYSE. The values of such securities used in computing the net asset value of the Fund's shares are determined as of such times. Securities or loan interests for which independent pricing services are unable to supply prices or for which market prices and/or quotations are not readily available or are considered to be unreliable are valued by a fair valuation team comprised of certain personnel of Pioneer Investment Management, Inc. (PIM), the Fund's investment adviser, pursuant to procedures adopted by the Fund's Board of Trustees. PIM's fair valuation team uses fair value methods approved by the Valuation Committee of the Board of Trustees. 36 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 Inputs used when applying fair value methods to value a security may include credit ratings, the financial condition of the company, current market conditions and comparable securities. The Fund may use fair value methods if it is determined that a significant event has occurred after the close of the exchange or market on which the security trades and prior to the determination of the Fund's net asset value. Examples of a significant event might include political or economic news, corporate restructurings, natural disasters, terrorist activity or trading halts. Thus, the valuation of the Fund's securities may differ significantly from exchange prices and such differences could be material. PIM's fair valuation team is responsible for monitoring developments that may impact fair valued securities and for discussing and assessing fair values on an ongoing basis, and at least quarterly, with the Valuation Committee of the Board of Trustees. At August 31, 2015, no securities were valued using fair value methods (other than securities valued using prices supplied by independent pricing services or broker-dealers or using a third party insurance industry pricing model). B. Investment Income and Transactions Principal amounts of mortgage-backed securities are adjusted for monthly paydowns. Premiums and discounts related to certain mortgage-backed securities are amortized or accreted in proportion to the monthly paydowns. All discounts/premiums on purchase prices of debt securities are accreted/amortized for financial reporting purposes over the life of the respective securities, and such accretion/amortization is included in interest income. Dividend income is recorded on the ex-dividend date except that certain dividends from foreign securities where the ex-dividend date may have passed are recorded as soon as the Fund becomes aware of the ex-dividend data in the exercise of reasonable diligence. Interest income is recorded on the accrual basis. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. C. Foreign Currency Translation The books and records of the Fund are maintained in U.S. dollars. Amounts denominated in foreign currencies are translated into U.S. dollars using current exchange rates. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 37 Net realized gains and losses on foreign currency transactions, if any, represent, among other things, the net realized gains and losses on foreign currency contracts, disposition of foreign currencies and the difference between the amount of income accrued and the U.S. dollars actually received. Further, the effects of changes in foreign currency exchange rates on investments are not segregated in the statement of operations from the effects of changes in the market price of those securities but are included with the net realized and unrealized gain or loss on investments. D. Futures Contracts The Fund may enter into futures transactions in order to attempt to hedge against changes in interest rates, securities prices and currency exchange rates or to seek to increase total return. Futures contracts are types of derivatives. All futures contracts entered into by the Fund are traded on a futures exchange. Upon entering into a futures contract, the Fund is required to deposit with a broker an amount of cash or securities equal to the minimum "initial margin" requirements of the associated futures exchange. Subsequent payments for futures contracts ("variation margin") are paid or received by the Fund, depending on the daily fluctuation in the value of the contracts, and are recorded by the Fund as unrealized appreciation or depreciation. When the contract is closed, the Fund realizes a gain or loss equal to the difference between the opening and closing value of the contract as well as any fluctuation in foreign currency exchange rates where applicable. The use of futures contracts involves, to varying degrees, elements of market, interest rate, currency exchange rate and counterparty risks, which may exceed the amount recognized by the Fund. Changes in value of the contracts may not directly correlate to the changes in value of the underlying securities. The average value of contracts open during the year ended August 31, 2015 was $(7,109,548). At August 31, 2015, open futures contracts were as follows: --------------------------------------------------------------------------- Number of Contracts Settlement Unrealized Type Long/(Short) Month/Year Value Depreciation --------------------------------------------------------------------------- U.S. 5 Year Note (1) 9/15 $(119,812) $(547) --------------------------------------------------------------------------- Total $(119,812) $(547) =========================================================================== E. Forward Foreign Currency Contracts The Fund may enter into forward foreign currency contracts (contracts) for the purchase or sale of a specific foreign currency at a fixed price on a future date. All contracts are marked to market daily at the applicable exchange rates, and any resulting unrealized appreciation or depreciation is recorded in 38 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 the Fund's financial statements. The Fund records realized gains and losses at the time a contract is offset by entry into a closing transaction or extinguished by delivery of the currency. Risks may arise upon entering into these contracts from the potential inability of counterparties to meet the terms of the contract and from unanticipated movements in the value of foreign currencies relative to the U.S. dollar (see Note 5). F. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal income tax provision is required. As of August 31, 2015, the Fund did not accrue any interest or penalties with respect to uncertain tax positions, which, if applicable, would be recorded as an income tax expense in the Statement of Operations. The amount and character of income and capital gain distributions to shareowners are determined in accordance with federal income tax rules, which may differ from U.S. generally accepted accounting principles. Distributions in excess of net investment income or net realized gains are temporary overdistributions for financial statement purposes resulting from differences in the recognition or classification of income or distributions for financial statement and tax purposes. Capital accounts within the financial statements are adjusted for permanent book/tax differences to reflect tax character, but are not adjusted for temporary differences. At August 31, 2015, the Fund reclassified $1,225,638 to increase undistributed net investment income and $1,225,638 to decrease accumulated net realized gain on investments to reflect permanent book/tax differences. These adjustments have no impact on net assets or the results of operations. At August 31, 2015, the Fund was permitted to carry forward indefinitely $134,106 of long-term losses and $730,842 of short-term losses under the Regulated Investment Company Modernization Act of 2010 without limitation. The tax character of distributions paid during the fiscal years ended August 31, 2015 was as follows: --------------------------------------------------------------------------- 2015 --------------------------------------------------------------------------- Distributions paid from: Ordinary income $517,221 --------------------------------------------------------------------------- Total $517,221 =========================================================================== Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 39 The following shows the components of distributable earnings (losses) on a federal income tax basis at August 31, 2015: --------------------------------------------------------------------------- 2015 --------------------------------------------------------------------------- Distributable earnings: Undistributed ordinary income $ 797,526 Capital loss carryforward (864,948) Unrealized depreciation (449,009) --------------------------------------------------------------------------- Total $(516,431) =========================================================================== The difference between book-basis and tax-basis net unrealized depreciation is attributable to the tax deferral of losses on wash sales, adjustments relating to catastrophe bonds, the mark to market of forwards, swaps, options and future contracts. G. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), earned $56 in underwriting commissions on the sale of Class A shares during the year ended August 31, 2015. H. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on its respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A and Class C shares of the Fund, respectively (see Note 4). Class Y shares do not pay distribution fees. All expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services are allocated among the classes of shares based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner and at the same time, except that net investment income dividends to Class A, Class C and Class Y shares can reflect different transfer agent and distribution expense rates. I. Risks When interest rates rise, the prices of fixed-income securities in the Fund will generally fall. Conversely, when interest rates fall, the prices of fixed-income securities in the Fund will generally rise. Investments in the Fund are subject to possible loss due to the financial failure of underlying issues and their 40 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 ability to meet their debt obligations. The Fund's prospectus contains unaudited information regarding the Fund's principal risks. Please refer to that document when considering the Fund's principal risks. The Fund invests in event-linked bonds. Event-linked bonds are floating rate debt obligations for which the return of principal and the payment of interest are contingent on the non-occurrence of a pre-defined "trigger" event, such as a hurricane or an earthquake of a specific magnitude. The trigger event's magnitude may be based on losses to a company or industry, industry indexes or readings of scientific instruments, or may be based on specified actual losses. If a trigger event, as defined within the terms of an event-linked bond occurs, the Fund may lose a portion or all of its accrued interest and/or principal invested in such event-linked bond. The Fund is entitled to receive principal and interest payments so long as no trigger event occurs of the description and magnitude specified by the instrument. In addition to the specified trigger events, event-linked bonds may expose the Fund to other risks, including but not limited to issuer (credit) default, adverse regulatory or jurisdictional interpretations and adverse tax consequences. In addition to event-linked bonds, the Fund also may invest in other insurance-linked securities ("ILS"). The Fund's investments in ILS may include special purpose vehicles ("SPVs") or similar instruments structured to comprise a portion of a reinsurer's catastrophe-oriented business, known as quota share instruments (sometimes referred to as reinsurance sidecars), or to provide reinsurance relating to specific risks to insurance or reinsurance companies through a collateralized instrument, known as collateralized reinsurance. Structured reinsurance investments also may include industry loss warranties ("ILWs"), are subject to the same risks as event-linked bonds. In addition, because quota share instruments represent an interest in a basket of underlying reinsurance contracts, the Fund has limited transparency into the individual underlying contracts and therefore must rely upon the risk assessment and sound underwriting practices of the issuer. Accordingly, it may be more difficult for PIM to fully evaluate the underlying risk profile of the Fund's investment in quota share instruments and therefore place the Fund's assets at greater risk of loss than if PIM had more complete information. These securities may be difficult to purchase, sell or unwind and may be difficult to value. J. Credit Default Swaption Writing The Fund may write put and covered call swaptions on portfolio securities in order to attempt to hedge against changes in the value of portfolio securities or to seek to increase total return. When a swaption is written, the Fund receives a premium and becomes obligated to purchase or sell the underlying security at a fixed price upon the exercise of the swaption. When the Fund writes a swaption, an amount equal to the premium received by the Fund is Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 41 recorded as a liability and is subsequently adjusted to the current value of the swaption written. Premiums received from writing swaptions that expire unexercised are treated by the Fund on the expiration date as realized gains from investments. The difference between the premium and the amount paid on effecting a closing purchase transaction, including brokerage commissions, is also treated as a realized gain or, if the premium is less than the amount paid for the closing purchase transaction, as a realized loss. If a call swaption is exercised, the premium is added to the proceeds from the sale of the underlying security in determining whether the Fund has realized a gain or loss. The Fund as writer of a swaption bears the market risk of an unfavorable change in the price of the security underlying the written swaption. The Fund did not hold any written swaption contracts at August 31, 2015. The average value of written swaption contracts open during the year ended August 31, 2015 was $110. Transactions in written swaptions for the year ended August 31, 2015 are summarized as follows: --------------------------------------------------------------------------- Premiums Number of Received/ Contracts Paid --------------------------------------------------------------------------- Options outstanding at beginning of period (2,500,000) $ (38,750) Options opened (5,270,000) (26,087) Options exercised -- -- Options closed -- -- Options expired 7,770,000 64,837 --------------------------------------------------------------------------- Options outstanding at end of period -- $ -- =========================================================================== K. Option Writing The Fund may write put and covered call options to seek to increase total return. When an option is written, the Fund receives a premium and becomes obligated to purchase or sell the underlying security at a fixed price, upon the exercise of the option. When the Fund writes an option, an amount equal to the premium received by the Fund is recorded as a liability and is subsequently adjusted to the current value of the option written. Premiums received from writing options that expire unexercised are treated by the Fund on the expiration date as realized gains from investments. The difference between the premium and the amount paid on effecting a closing purchase transaction, including brokerage commissions, is also treated as a realized gain, or, if the premium is less than the amount paid for the closing purchase transaction, as a realized loss. If a call option is exercised, the premium is added to the proceeds from the sale of the underlying security in determining 42 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 whether the Fund has realized a gain or loss. The Fund as writer of an option bears the market risk of an unfavorable change in the price of the security underlying the written option. The average value of written options contracts open during the year ended August 31, 2015 was $(90,744). Written call and put option contracts outstanding at period end are listed at the end of the Fund's schedule of investments. The Fund held two written put option contracts that were open at August 31, 2015. If the put options were exercised at August 31, 2015, the maximum amount the Fund would have been required to pay was $237,087. --------------------------------------------------------------------------- Number of Premiums Contracts Received --------------------------------------------------------------------------- Options outstanding at beginning of period -- $ -- Options opened (972) (439,086) Options exercised -- -- Options closed 364 140,931 Options expired 416 61,068 --------------------------------------------------------------------------- Options outstanding at end of period (192) $(237,087) =========================================================================== L. Options Purchased The Fund may purchase put and call options in order to seek to increase total return. Purchased call and put options entitle the Fund to buy and sell a specified number of shares or units of a particular security, currency or index at a specified price at a specific date or within a specific period of time. Upon the purchase of a call or put option, the premium paid by the Fund is included in the Statement of Assets and Liabilities as an investment. All premiums are marked-to-market daily, and any unrealized appreciation or depreciation are recorded in the Fund's financial statements. As the purchaser of an index option, the Fund has the right to receive a cash payment equal to any depreciation in the value of the index below the strike price of the option (in the case of a put) or equal to any appreciation in the value of the index over the strike price of the option (in the case of a call) as of the valuation date of the option. Premiums paid for purchased calls and put options which have expired are treated as realized losses on investments in the Statement of Operations. Upon the exercise or closing of a purchased put option, the premium is offset against the proceeds on the sale of the underlying security or financial instrument in order to determine the realized gain or loss on investments. Upon the exercise or closing of a purchased call option, the premium is added to the cost of the security or financial instrument. The risk associated with purchasing options is limited to the premium originally paid. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 43 The average value of purchased options contracts open during the year ended August 31, 2015 was $108,524. Purchased option contracts outstanding at period end are listed within the Fund's schedule of investments. M. Credit Default Swaps A credit default swap is a contract between a buyer of protection and a seller of protection against a pre-defined credit event. The Fund may sell or buy credit default swap contracts to seek to increase the Fund's income, or to attempt to hedge the risk of default on portfolio securities. A credit default swap index is used to hedge risk or take a position on a basket of credit entities or indices. As a seller of protection, the Fund would be required to pay the notional (or other agreed-upon) value of the referenced debt obligation to the counterparty in the event of a default by a U.S. or foreign corporate issuer of a debt obligation, which would likely result in a loss to the Fund. In return, the Fund would receive from the counterparty a periodic stream of payments during the term of the contract provided that no event of default occurred. The maximum exposure of loss to the seller would be the notional value of the credit default swaps outstanding. If no default occurs, the Fund would keep the stream of payments and would have no payment obligation. The Fund may also buy credit default swap contracts in order to hedge against the risk of default of debt securities, in which case the Fund would function as the counterparty referenced above. When the Fund enters into a credit default swap contract, the protection buyer makes an upfront or periodic payment to the protection seller in exchange for the right to receive a contingent payment. An upfront payment made by the Fund, as the protection buyer, is recorded as an asset in the Statement of Assets and Liabilities. Periodic payments received or paid by the Fund are recorded as realized gains or losses in the Statement of Operations. Credit default swap contracts are marked-to-market daily using valuations supplied by independent sources and the change in value, if any, is recorded as unrealized appreciation or depreciation in the Statement of Assets and Liabilities. Payments received or made as a result of a credit event or upon termination of the contract are recognized, net of the appropriate amount of the upfront payment, as realized gains or losses in the Statement of Operations. 44 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 Credit default swap contracts involving the sale of protection may involve greater risks than if the Fund had invested in the referenced debt instrument directly. Credit default swap contracts are subject to general market risk, liquidity risk, counterparty risk and credit risk. If the Fund is a protection buyer and no credit event occurs, it will lose its investment. If the Fund is a protection seller and a credit event occurs, the value of the referenced debt instrument received by the Fund, together with the periodic payments received, may be less than the amount the Fund pays to the protection buyer, resulting in a loss to the Fund. Certain swap contracts that are cleared through a central clearinghouse are referred to as centrally cleared swaps. All payments made or received by the Fund are pursuant to a centrally cleared swap contract with the central clearing party rather than the original counterparty. Upon entering into a centrally cleared swap contract, the Fund is required to make an initial margin deposit, either in cash or in securities. The daily change in value on open centrally cleared contracts is recorded as variation margin on centrally cleared swaps on the Statement of Assets and Liabilities. Open credit default swap contracts at August 31, 2015 are listed in the Schedule of Investments. The average value of credit default swap contracts open during the year ended August 31, 2015 was $(896,510). N. Interest Rate Swap Contracts The Fund may enter into interest rate swaps to attempt to hedge against interest rate fluctuations or to enhance its income. Pursuant to the interest rate swap agreement, the Fund negotiates with a counterparty to exchange a periodic stream of payments based on a benchmark interest rate. One cash flow stream will typically be a floating rate payment based upon the specified floating benchmark interest rate while the other is typically a fixed interest rate. Payment flows are usually netted against each other, with the difference being paid by one party to the other on a monthly basis. Periodic payments received or paid by the Fund are recorded as realized gains or losses in the Statement of Operations. Interest rate swap contracts are marked-to-market daily using valuations supplied by independent sources and the change in value, if any, is recorded as unrealized appreciation or depreciation in the Statement of Assets and Liabilities. Interest rate swap contracts are subject to counterparty risk and movements in interest rates. Open interest rate swap contracts at August 31, 2015 are listed in the Schedule of Investments. The average value of interest swap contracts open during the year ended August 31, 2015 was $(67,614). Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 45 O. Repurchase Agreements With respect to repurchase agreements entered into by the Fund, the value of the underlying securities (collateral), including accrued interest, is required to be equal to or in excess of the repurchase price. The collateral for all repurchase agreements is held in safekeeping in the customer-only account of the Fund's custodian or a subcustodian of the Fund. PIM is responsible for determining that the value of the collateral remains at least equal to the repurchase price. 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredit, manages the Fund's portfolio. Management fees are calculated daily at an annual rate of 1.05% of the average daily net assets of the Fund up to $1 billion and 0.95% of the Fund's average daily net assets over $1 billion of the Fund. For the year ended August 31, 2015, the effective management fee was equivalent to 1.05% of the Fund's average daily net assets. PIM has contractually agreed to limit ordinary operating expenses to the extent required to reduce Fund expenses to 1.55%, 2.30% and 1.30% of the average daily net assets attributable to Class A, Class C and Class Y shares, respectively. These expense limitations are in effect through January 1, 2016. Fees waived and expenses reimbursed during the year ended August 31, 2015 are reflected on the Statement of Operations. Fees and expenses of other investment companies in which the Fund may invest are not included in the expense limitations noted above. There can be no assurance that PIM will extend the expense limitation agreement for a class of shares beyond the date referred to above. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund as administrative reimbursements. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $49,576 in management fees, administrative costs and certain other reimbursements payable to PIM at August 31, 2015. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimburses PIMSS for out-of-pocket expenses incurred by PIMSS related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the year ended August 31, 2015, such out-of-pocket expenses by class of shares were as follows: 46 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 -------------------------------------------------------------------------------- Shareholder Communications: -------------------------------------------------------------------------------- Class A $1,555 Class C 662 Class Y 409 -------------------------------------------------------------------------------- Total $2,626 ================================================================================ Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $(532) in transfer agent fees and out-of-pocket reimbursements payable from PIMSS at August 31, 2015. 4. Distribution Plan The Fund has adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A and Class C shares. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Pursuant to the Plan, the Fund also pays PFD 1.00% of the average daily net assets attributable to Class C shares. The fee for Class C shares consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class C shares. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $1,406 in distribution fees payable to PFD at August 31, 2015. In addition, redemptions of each class of shares (except Class Y shares) may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within 12 months of purchase. Redemptions of Class C shares within 12 months of purchase are subject to a CDSC of 1.00%, based on the lower of cost or market value of shares being redeemed. Shares purchased as part of an exchange remain subject to any CDSC that applied to the original purchase of those shares. There is no CDSC for Class Y shares. Proceeds from the CDSC are paid to PFD. For the year ended August 31, 2015, there were no CDSCs paid to PFD. 5. Forward Foreign Currency Contracts At August 31, 2015, the Fund had entered into various forward foreign currency contracts that obligate the Fund to deliver or take delivery of currencies at specified future maturity dates. Alternatively, prior to the settlement date of a forward foreign currency contract, the Fund may close out such contract by entering into an offsetting contract. The average value of forward foreign currency contracts open during the year ended August 31, 2015 was $(10,526,132). Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 47 Open forward foreign currency contracts at August 31, 2015 were as follows: ------------------------------------------------------------------------------------------- Net Currency Quantity Currency Quantity Settlement Unrealized Purchased Purchased Sold Sold Counterparty Date Appreciation ------------------------------------------------------------------------------------------- Brown Brothers EURO 689,280 USD 772,214 Harriman & Co. 9/16/15 $ 2,139 EURO 219,712 USD 239,785 Citibank NA 9/16/15 7,044 USD 354,680 EURO 311,042 Citibank NA 10/19/15 5,062 USD 328,048 HUF 91,138,228 Citibank NA 11/25/15 1,802 USD 353,582 KRW 411,760,920 Citibank NA 10/26/15 5,870 USD 402,600 SGD 551,162 Citibank NA 10/26/15 12,590 USD 139,147 ZAR 1,828,142 Citibank NA 11/25/15 3,306 JPMorgan MXN 2,697,746 USD 158,665 Chase Bank NA 11/25/15 1,760 JPMorgan RUB 9,699,338 USD 149,994 Chase Bank NA 10/26/15 1,131 JPMorgan USD 162,584 AUD 222,216 Chase Bank NA 11/25/15 5,002 JPMorgan USD 238,612 CAD 312,122 Chase Bank NA 11/24/15 1,712 JPMorgan USD 330,836 CHF 314,711 Chase Bank NA 11/25/15 4,078 JPMorgan USD 422,359 EURO 370,794 Chase Bank NA 11/25/15 5,310 JPMorgan USD 137,958 KRW 160,175,000 Chase Bank NA 10/26/15 2,697 JPMorgan USD 242,416 NZD 364,918 Chase Bank NA 11/25/15 12,576 ------------------------------------------------------------------------------------------- $72,079 =========================================================================================== 48 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 --------------------------------------------------------------------------------------------- Net Currency Quantity Currency Quantity Settlement Unrealized Purchased Purchased Sold Sold Counterparty Date Depreciation --------------------------------------------------------------------------------------------- Brown Brothers EURO 310,927 USD 349,887 Harriman & Co. 10/19/15 $ (398) MXN 1,090,181 CAD 87,924 Citibank NA 10/26/15 (1,767) PLN 1,253,293 EURO 295,488 Citibank NA 11/25/15 (899) USD 403,223 CZK 9,953,193 Citibank NA 10/26/15 (10,840) JP Morgan USD 144,148 RUB 9,557,021 Chase Bank NA 10/26/15 (4,759) JPMorgan IDR 2,227,922,154 USD 162,052 Chase Bank NA 10/26/15 (5,542) JPMorgan INR 10,666,585 USD 165,196 Chase Bank NA 10/26/15 (6,027) JPMorgan MXN 5,399,167 CAD 437,275 Chase Bank NA 10/26/15 (10,138) JPMorgan MXN 154,250 MXN 2,653,028 Chase Bank NA 11/25/15 (3,516) JPMorgan PLN 615,663 CZK 3,920,693 Chase Bank NA 11/25/15 (408) JPMorgan USD 36,072 EURO 32,359 Chase Bank NA 10/19/15 (301) JPMorgan USD 583,461 JPY 71,367,188 Chase Bank NA 11/25/15 (6,295) JPMorgan USD 419,798 SEK 3,609,912 Chase Bank NA 10/26/15 (8,447) JPMorgan USD 469,950 TWD 15,402,146 Chase Bank NA 11/25/15 (4,479) --------------------------------------------------------------------------------------------- $ (63,816) ============================================================================================= 6. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS which may result in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the year ended August 31, 2015, the Fund's expenses were not reduced under such arrangements. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 49 7. Assets and Liabilities Offsetting The Fund has entered into an International Swaps and Derivatives Association, Inc. Master Agreement ("ISDA Master Agreement") or similar agreement with substantially all its derivative counterparties. An ISDA Master Agreement is a bilateral agreement between the Fund and a counterparty that governs the trading of certain OTC derivatives and typically contains, among other things, close-out and set-off provisions which apply upon the occurrence of event of a default and/or termination event as defined under the relevant ISDA Master Agreement. The ISDA Master Agreement may also give a party the right to terminate all transactions traded under such agreement if, among other things, there is deterioration in the credit quality of the other party. Upon an event of default or a termination of the ISDA Master Agreement, the non-defaulting party has the right to close out all transactions under such agreement and to net amounts owed under each transaction to determine one net amount payable by one party to the other. The right to close out and net payments across all transactions under the ISDA Master Agreement could result in a reduction of the Fund's credit risk to its counterparty equal to any amounts payable by the Fund under the applicable transactions, if any. However, the Fund's right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific ISDA counterparty is subject. The collateral requirements for derivatives transactions under an ISDA Master Agreement are governed by a credit support annex to the ISDA Master Agreement. Collateral requirements are generally determined at the close of business each day and are typically based on changes in market values for each transaction under an ISDA Master Agreement and netted into one amount for such agreement. Generally, the amount of collateral due from or to a counterparty is subject to threshold (a "minimum transfer amount") before a transfer is required, which may vary by counterparty. Collateral pledged for the benefit of the Fund and/or counterparty is held in segregated accounts by the Fund's custodian and cannot be sold, re-pledged, assigned or otherwise used while pledged. Cash that has been segregated to cover the Fund's collateral obligations, if any, will be reported separately in the Statement of Assets and Liabilities as "Futures collateral", "Swap Collateral" or "Deposit with broker." Securities pledged by the Fund as collateral, if any, are identified as such in the Schedule of Investments. Financial instruments subject to an enforceable master netting agreement such as an ISDA Master Agreement have been offset on the Statement of Assets and Liabilities. The following charts show gross assets and liabilities of the Fund as of August 31, 2015. 50 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 ----------------------------------------------------------------------------------------------------------- Derivative Assets Subject to Derivatives Non-Cash Cash Net Amount Master Netting Available Collateral Collateral of Derivative Counterparty Agreement for Offset Received (a) Received (a) Assets (b) ----------------------------------------------------------------------------------------------------------- Barclays Bank Plc $ 53,797 $ (53,797) $ -- $ -- $ -- Citibank NA 130,223 (130,223) -- -- -- Goldman Sachs International 55,732 (55,732) -- -- -- JP Morgan Chase Bank NA 79,683 (79,683) -- -- -- Morgan Stanley Capital Services LLC 57,324 (21,482) -- -- 35,842 ----------------------------------------------------------------------------------------------------------- $376,759 $ (340,917) $ -- $ -- $ 35,842 =========================================================================================================== ----------------------------------------------------------------------------------------------------------- Derivative Liabilities Subject to Derivatives Non-Cash Cash Net Amount Master Netting Available Collateral Collateral of Derivative Counterparty Agreement for Offset Pledged (a) Pledged (a) Liabilities (c) ----------------------------------------------------------------------------------------------------------- Barclays Bank Plc $ (229,611) $ 53,797 $175,814 $ -- $ -- Citibank NA (578,818) 130,223 446,151 -- (2,444) Goldman Sachs International (115,561) 55,732 -- -- (59,829) JP Morgan Chase Bank NA (191,914) 79,683 112,231 -- -- Morgan Stanley Capital Services LLC (21,482) 21,482 -- -- -- ----------------------------------------------------------------------------------------------------------- $ (1,137,386) $340,917 $734,196 $ -- $ (62,273) =========================================================================================================== (a) The amount presented here may be less than the total amount of collateral received/pledged as the net amount of derivative assets and liabilities cannot be less than $0. (b) Represents the net amount due from the counterparty in the event of default. (c) Represents the net amount payable to the counterparty in the event of default. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 51 8. Additional Disclosures about Derivative Instruments and Hedging Activities: Values of derivative instruments as of August 31, 2015 were as follows: -------------------------------------------------------------------------------------------- Derivatives not accounted for as Asset Derivatives Liabilities Derivatives hedging instruments ------------------------------------------------------------------ under Accounting Statement of Assets Statement of Assets Standards Codification and Liabilities and Liabilities (ASC) 815 Location Value Location Value -------------------------------------------------------------------------------------------- Forward Foreign Net unrealized Net unrealized Currency Contracts appreciation on depreciation on forward foreign forward foreign currency contracts $72,079 currency contracts $ 63,816 Futures Contracts Net unrealized Net unrealized appreciation on depreciation on futures contracts -- futures contracts 547 Written Option Written option Written option Contracts contracts -- contracts 515,040 Swap Contracts Net unrealized Net unrealized appreciation on depreciation on swap contracts -- swap contracts 267,313 -------------------------------------------------------------------------------------------- Total $72,079 $846,716 ============================================================================================ The effect of derivative instruments on the Statement of Operations for the year ended August 31, 2015 was as follows: -------------------------------------------------------------------------------------------- Change in Derivatives not Unrealized accounted for as Realized Appreciation hedging instruments Location of Gain Gain or Loss (Depreciation) under Accounting or (Loss) on on Derivatives on Derivatives Standards Codification Derivatives Recognized Recognized Recognized (ASC) 815 in Income in Income in Income -------------------------------------------------------------------------------------------- Futures Contracts Net realized gain (loss) on futures contracts $ (322,703) Futures Contracts Change in unrealized appreciation (depreciation) on futures contracts $ 52,017 Written Options Net realized gain (loss) on written swaptions $ 173,103 Written Options Change in unrealized appreciation (depreciation) on written swaptions $(315,996) Forward Foreign Net realized gain (loss) on forward Currency Contracts foreign currency contracts $2,183,590 Forward Foreign Change in unrealized appreciation Currency Contracts (depreciation) on forward foreign currency contracts $(514,925) Swap Contracts Net realized gain (loss) on swap contracts $ 232,074 Swap Contracts Change in unrealized appreciation (depreciation) on swap contracts $(236,186) 52 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 Report of Independent Registered Public Accounting Firm To the Board of Trustees of Pioneer Series Trust V and the Shareowners of Pioneer Long/Short Bond Fund (formerly, Pioneer Long/ Short Global Bond Fund): -------------------------------------------------------------------------------- We have audited the accompanying statement of assets and liabilities of Pioneer Long/Short Bond Fund (formerly, Pioneer Long/ Short Global Bond Fund), one of the portfolios constituting Pioneer Series Trust V, including the schedule of investments, as of August 31, 2015, and the related statement of operations for the year then ended, and the statement of changes in net assets and the financial highlights for the year then ended and for the period from December 30, 2013, (commencement of operations) through August 31, 2014. These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of August 31, 2015, by correspondence with the custodian and brokers and agent banks; where replies were not received from brokers and agent banks, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Pioneer Long/Short Bond Fund (formerly, Pioneer Long/ Short Global Bond Fund) as of August 31, 2015, the results of its operations for the year then ended, and the changes in its net assets, and the financial highlights for the year then ended and for the period from December 30, 2013, (commencement of operations) through August 31, 2014, in conformity with accounting principles generally accepted in the United States of America. /s/ Deloitte & Touche LLP Boston, Massachusetts October 28, 2015 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 53 ADDITIONAL INFORMATION (unaudited) The percentages of the Fund's ordinary income distributions that are exempt from nonresident alien (NRA) tax withholding resulting from qualified interest income was 27.28%. The Board of Trustees of the Fund has approved the elimination of the Fund's current policy normally to invest at least 40% of the net assets in securities of assets located outside of the United States. In connection with the elimination of this policy, the Fund was renamed Pioneer Long/Short Bond Fund. These changes went into effect on June 1, 2015. PIM, the Fund's investment adviser, is currently an indirect, wholly-owned subsidiary of UniCredit. On April 23, 2015, UniCredit announced that it signed a preliminary and exclusive agreement with Banco Santander and affiliates of Warburg Pincus and General Atlantic (the "Private Equity Firms") with respect to Pioneer Investments ("Pioneer") and Santander Asset Management ("SAM") (the "Transaction"). The Transaction, as described in the UniCredit announcement, will entail the establishment of a holding company, with the name Pioneer Investments, to be owned by UniCredit (50%) and the Private Equity Firms (50% between them). The holding company will control Pioneer's U.S. operations, including the Adviser. The holding company also will own 66.7% of Pioneer's and SAM's combined operations outside the U.S., while Banco Santander will own directly the remaining 33.3% stake. The completion of the Transaction is subject to the signing of a definitive agreement, as well as certain regulatory and corporate approvals, and other conditions. Under the Investment Company Act of 1940, completion of the Transaction will cause the Fund's investment advisory agreement with the Adviser to terminate. In connection with the Transaction, the Fund's Board of Trustees will be asked to approve a new investment advisory agreement for the Fund. If approved by the Board, the Fund's new investment advisory agreement will be submitted to the shareholders of the Fund for their approval. 54 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Custodian and Sub-Administrator Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Deloitte & Touche LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Morgan, Lewis & Bockius LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at us.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at www.sec.gov. Trustees and Officers The Fund's Trustees and officers are listed below, together with their principal occupations during at least the past five years. Trustees who are interested persons of the Fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the Fund are referred to as Independent Trustees. Each of the Trustees serves as a Trustee of each of the 51 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the Fund is 60 State Street, Boston, Massachusetts 02109. The Statement of Additional Information of the Fund includes additional information about the Trustees and is available, without charge, upon request, by calling 1-800-225-6292. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 55 Independent Trustees ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Thomas J. Perna (64) Trustee since 2013. Private investor (2004-2008 and Director, Broadridge Chairman of the Board Serves until a successor 2013-present); Chairman (2008-2013) and Financial Solutions, Inc. and Trustee trustee is elected or earlier Chief Executive Officer (2008-2012), (investor communications retirement or removal. Quadriserv, Inc. (technology products for and securities processing securities lending industry); and Senior provider for financial Executive Vice President, The Bank of New services industry) (2009- York (financial and securities services) present); Director, (1986-2004) Quadriserv, Inc. (2005-2013); and Commissioner, New Jersey State Civil Service Commission (2011-present) ------------------------------------------------------------------------------------------------------------------------------------ David R. Bock (71) Trustee since 2013. Managing Partner, Federal City Capital Director of New York Trustee Serves until a successor Advisors (corporate advisory services Mortgage Trust trustee is elected or earlier company) (1997-2004 and 2008-present); (publicly-traded mortgage retirement or removal. Interim Chief Executive Officer, Oxford REIT) (2004- 2009, Analytica, Inc. (privately-held research 2012-present); Director and consulting company) (2010); Executive of The Swiss Helvetia Vice President and Chief Financial Fund, Inc. (closed-end Officer, I-trax, Inc. (publicly traded fund) (2010-present); health care services company) Director of Oxford (2004-2007); and Executive Vice President Analytica, Inc. and Chief Financial Officer, Pedestal (2008-present); and Inc. (internet-based mortgage trading Director of Enterprise company) (2000-2002); Private consultant Community Investment, (1995-1997), Managing Director, Lehman Inc. (privately-held Brothers (investment banking firm) affordable housing (1992-1995); and Executive, The World finance company) Bank (1979-1992) (1985-2010) ------------------------------------------------------------------------------------------------------------------------------------ Benjamin M. Friedman (71) Trustee since 2013. William Joseph Maier Professor of Trustee, Mellon Trustee Serves until a successor Political Economy, Harvard University Institutional Funds trustee is elected or earlier (1972-present) Investment Trust and retirement or removal. Mellon Institutional Funds Master Portfolio (oversaw 17 portfolios in fund complex) (1989-2008) ------------------------------------------------------------------------------------------------------------------------------------ 56 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Margaret B.W. Graham (68) Trustee since 2013. Founding Director, Vice President and None Trustee Serves until a successor Corporate Secretary, The Winthrop Group, trustee is elected or earlier Inc. (consulting firm) (1982-present); retirement or removal. Desautels Faculty of Management, McGill University (1999-present); and Manager of Research Operations and Organizational Learning, Xerox PARC, Xerox's advance research center (1990-1994) ------------------------------------------------------------------------------------------------------------------------------------ Marguerite A. Piret (67) Trustee since 2013. President and Chief Executive Officer, Director of New America Trustee Serves until a successor Newbury, Piret & Company, Inc. High Income Fund, Inc. trustee is elected or earlier (investment banking firm) (1981-present) (closed-end investment retirement or removal. company) (2004-present); and Member, Board of Governors, Investment Company Institute (2000-2006) ------------------------------------------------------------------------------------------------------------------------------------ Fred J. Ricciardi (68) Trustee since 2014. Consultant (investment company services) None Trustee Serves until a successor (2012-present); Executive Vice President, trustee is elected or earlier BNY Mellon (financial and investment retirement or removal. company services) (1969-2012); Director, BNY International Financing Corp. (financial services) (2002-2012); and Director, Mellon Overseas Investment Corp. (financial services) (2009-2012) ------------------------------------------------------------------------------------------------------------------------------------ Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 57 Interested Trustee ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Kenneth J. Taubes (57)* Trustee since 2014. Director and Executive Vice President None Trustee Serves until a successor (since 2008) and Chief Investment trustee is elected or earlier Officer, U.S. (since 2010) of PIM-USA; retirement or removal. Executive Vice President of Pioneer (since 2008); Executive Vice President of Pioneer Institutional Asset Management, Inc. (since 2009); and Portfolio Manager of Pioneer (since 1999) ------------------------------------------------------------------------------------------------------------------------------------ * Mr. Taubes is an Interested Trustee because he is an officer of the Fund's investment adviser and certain of its affiliates. 58 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 Advisory Trustee ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Lorraine Monchak (59)** Advisory Trustee since 2014. Chief Investment Officer, 1199 SEIU Funds None Advisory Trustee (healthcare workers union pension funds) (2001-present); Vice President-International Investments Group, American International Group, Inc. (insurance company) (1993-2001); Vice President Corporate Finance and Treasury Group, Citibank, N.A.(1980-1986 and 1990- 1993); Vice President-Asset/Liability Management Group, Federal Farm Funding Corporation (government-sponsored issuer of debt securities) (1988-1990); Mortgage Strategies Group, Shearson Lehman Hutton, Inc. (investment bank) (1987-1988); and Mortgage Strategies Group, Drexel Burnham Lambert, Ltd. (investment bank) (1986-1987) ------------------------------------------------------------------------------------------------------------------------------------ ** Ms. Monchak is a non-voting advisory trustee. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 59 Fund Officers ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Lisa M. Jones (53) Since 2014. Serves at the Chair, Director, CEO and President of None President and discretion of the Board. Pioneer Investment Management-USA (since Chief Executive Officer September 2014); Chair, Director, CEO and President of Pioneer Investment Management, Inc. (since September 2014); Chair, Director, CEO and President of Pioneer Funds Distributor, Inc. (since September 2014); Chair, Director, CEO and President of Pioneer Institutional Asset Management, Inc. (since September 2014); and Chair, Director, and CEO of Pioneer Investment Management Shareholder Services, Inc. (since September 2014); Managing Director, Morgan Stanley Investment Management (2010-2013); and Director of Institutional Business, CEO of International, Eaton Vance Management (2005-2010) ------------------------------------------------------------------------------------------------------------------------------------ Christopher J. Kelley (50) Since 2013. Serves at the Vice President and Associate General None Secretary and Chief discretion of the Board. Counsel of Pioneer since January 2008; Legal Officer Secretary and Chief Legal Officer of all of the Pioneer Funds since June 2010; Assistant Secretary of all of the Pioneer Funds from September 2003 to May 2010; and Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 ------------------------------------------------------------------------------------------------------------------------------------ Carol B. Hannigan (54) Since 2013. Serves at the Fund Governance Director of Pioneer since None Assistant Secretary discretion of the Board. December 2006 and Assistant Secretary of all the Pioneer Funds since June 2010; Manager-Fund Governance of Pioneer from December 2003 to November 2006; and Senior Paralegal of Pioneer from January 2000 to November 2003 ------------------------------------------------------------------------------------------------------------------------------------ Thomas Reyes (52) Since 2013. Serves at the Senior Counsel of Pioneer since May 2013 None Assistant Secretary discretion of the Board. and Assistant Secretary of all the Pioneer Funds since June 2010; and Counsel of Pioneer from June 2007 to May 2013 ------------------------------------------------------------------------------------------------------------------------------------ Mark E. Bradley (55) Since 2013. Serves at the Vice President-Fund Treasury of Pioneer; None Treasurer and Chief discretion of the Board. Treasurer of all of the Pioneer Funds Financial since March 2008; Deputy Treasurer of and Accounting Officer Pioneer from March 2004 to February 2008; and Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008 ------------------------------------------------------------------------------------------------------------------------------------ 60 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Luis I. Presutti (50) Since 2013. Serves at the Director-Fund Treasury of Pioneer; and None Assistant Treasurer discretion of the Board. Assistant Treasurer of all of the Pioneer Funds ------------------------------------------------------------------------------------------------------------------------------------ Gary Sullivan (57) Since 2013. Serves at the Fund Accounting Manager-Fund Treasury of None Assistant Treasurer discretion of the Board. Pioneer; and Assistant Treasurer of all of the Pioneer Funds ------------------------------------------------------------------------------------------------------------------------------------ David F. Johnson (35) Since 2013. Serves at the Fund Administration Manager-Fund Treasury None Assistant Treasurer discretion of the Board. of Pioneer since November 2008; Assistant Treasurer of all of the Pioneer Funds since January 2009; and Client Service Manager-Institutional Investor Services at State Street Bank from March 2003 to March 2007 ------------------------------------------------------------------------------------------------------------------------------------ Jean M. Bradley (62) Since 2013. Serves at the Chief Compliance Officer of Pioneer and None Chief Compliance Officer discretion of the Board. of all the Pioneer Funds since March 2010; Chief Compliance Officer of Pioneer Institutional Asset Management, Inc. since January 2012; Chief Compliance Officer of Vanderbilt Capital Advisors, LLC since July 2012: Director of Adviser and Portfolio Compliance at Pioneer since October 2005; and Senior Compliance Officer for Columbia Management Advisers, Inc. from October 2003 to October 2005 ------------------------------------------------------------------------------------------------------------------------------------ Kelly O'Donnell (44) Since 2013. Serves at the Director-Transfer Agency Compliance of None Anti-Money Laundering discretion of the Board. Pioneer and Anti-Money Laundering Officer Officer of all the Pioneer Funds since 2006 ------------------------------------------------------------------------------------------------------------------------------------ Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 61 This page for your notes. 62 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 This page for your notes. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 63 This page for your notes. 64 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 This page for your notes. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 65 This page for your notes. 66 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 This page for your notes. Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 67 This page for your notes. 68 Pioneer Long/Short Bond Fund | Annual Report | 8/31/15 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Write to us: -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: us.pioneerinvestments.com This report must be preceded or accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. [LOGO] PIONEER Investments(R) Pioneer Investment Management, Inc. 60 State Street Boston, MA 02109 us.pioneerinvestments.com Securities offered through Pioneer Funds Distributor, Inc. 60 State Street, Boston, MA 02109 Underwriter of Pioneer Mutual Funds, Member SIPC (C) 2015 Pioneer Investments 28080-01-1015 Pioneer Long/Short Opportunistic Credit Fund -------------------------------------------------------------------------------- Annual Report | August 31, 2015 -------------------------------------------------------------------------------- Ticker Symbols: Class A LRCAX Class C LRCCX Class Y LRCYX [LOGO] PIONEER Investments(R) visit us: us.pioneerinvestments.com Table of Contents President's Letter 2 Portfolio Management Discussion 4 Portfolio Summary 10 Prices and Distributions 11 Performance Update 12 Comparing Ongoing Fund Expenses 15 Schedule of Investments 17 Financial Statements 28 Notes to Financial Statements 35 Report of Independent Registered Public Accounting Firm 52 Trustees, Officers and Service Providers 54 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 1 President's Letter Dear Shareowner, In the second half of 2015, two main issues have been dominating the attention of global investors and policymakers alike, and shaping the current investment environment: The Federal Reserve System's (the Fed's) deliberations over when to begin normalizing interest rates in the U.S., and the increasing divergence in economic activity around the globe. As 2015 began, market expectations were that the Fed would likely begin raising interest rates by the middle of the year, but a sluggish gross domestic product report in the first calendar quarter as well as relatively benign inflation and wage growth contributed to the Fed's taking a more cautionary approach and delaying the start of its rate-hike cycle. At the same time, however, the U.S. labor market has continued its robust improvement, moving the Fed closer to declaring victory on one of its main monetary policy objectives -- full employment. Meanwhile, global economic activity has continued to diverge, with developed economies experiencing above-trend growth and most emerging markets economies lagging the rest of the world. The slower pace of economic activity in the emerging markets has been most evident in China, as the country's economy continues to undergo a long, potentially painful adjustment from investment-led growth to consumption-oriented growth. This divergence in global economic cycles is likely to continue for some time, and we would expect an increased level of volatility as global capital markets and policymakers adjust. Pioneer Investments believes that investors in today's environment can potentially benefit from the consistent and disciplined investment approach we have used since our founding in 1928. We focus on identifying value across global markets using proprietary research, careful risk management, and a long-term perspective. Our ongoing goal is to produce compelling returns consistent with the stated objectives of our investment products, and with our shareowners' expectations. We believe our shareowners can benefit from the experience and tenure of our investment teams as well as the insights generated from our extensive research process. 2 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 As always, and particularly during times of market uncertainty, we encourage you to work with your financial advisor to develop an overall investment plan that addresses both your short- and long-term goals, and to implement such a plan in a disciplined manner. We greatly appreciate your trust in us in the past and look forward to continuing to serve you in the future. Sincerely, /s/ Lisa M. Jones Lisa M. Jones President and CEO Pioneer Investment Management USA, Inc. Any information in this shareowner report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 3 Portfolio Management Discussion | 8/31/15 In the following interview, portfolio managers Thomas Swaney and Benjamin Gord discuss the factors that influenced Pioneer Long/Short Opportunistic Credit Fund's performance during the 12-month period ended August 31, 2015, as well as their investment approach in managing the Fund. Mr. Swaney, Head of Alter- native Fixed Income, U.S., a senior vice president, and a portfolio manager at Pioneer (lead portfolio manager of the Fund since 2013), and Mr. Gord, a vice president and a portfolio manager at Pioneer, are responsible for the day-to-day management of the Fund. Q How did the Fund perform during the 12-month period ended August 31, 2015? A Pioneer Long/Short Opportunistic Credit Fund's Class A shares returned 1.12% at net asset value during the 12-month period ended August 31, 2015, while the Fund's benchmark, the Bank of America Merrill Lynch (BofA ML) 3-Month U.S. Treasury-Bill Index, returned 0.03%. During the same period, the average return of the 231 mutual funds in Lipper's Alternative Credit Focus Funds category was -2.22%, and the average return of the 418 mutual funds in Morningstar's Non-Traditional Bond Funds category was -1.38%. Q Can you provide an overview of the Fund's approach? A The big picture is that we seek to have the Fund produce an average annual return that is greater than the return on three-month Treasury bills, on an annualized basis, with volatility lower than one would experience in the broad equity market. In pursuing this goal, we seek to have the Fund provide positive returns while trying to minimize the extent of any negative returns, regardless of market conditions. Obviously, if we are going to be successful in achieving our objective, the Fund's returns cannot be overly dependent on the direction of one or more financial asset categories. In seeking positive returns regardless of market conditions, we utilize two distinct strategies. One strategy is "directional," in that we need to be correct about whether a particular asset price is poised to go up or down. However, we seek to have the Fund's performance benefit from both positive and negative returns. This means that at times we invest the portfolio in some asset categories within the broad bond market by taking long positions, while taking an unfavorable view of other asset classes by taking short positions. 4 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 The other part of the portfolio utilizes uncorrelated, relative-value-based trading strategies, in which we do not have to take a stance on whether an individual market is going to rise or fall overall. Instead, we need to identify either a segment or security within a market that we believe will outperform versus another market segment or security. We execute these portfolio investment strategies across several different global financial markets and many different asset classes. We will seek to "pair" positions, meaning that the Fund will have a long position in one segment/security of a particular market, and a short position in another segment/security. We believe this strategy can allow the Fund to benefit from favorable relative performance, regardless of the overall direction of that market. Most importantly, we closely track the risks we have assumed in both portions of the portfolio and operate within an overall "risk budget," which is based on our goal of largely avoiding negative returns over a 12-month period. Q Can you review the principal portfolio investment strategies you implemented during the 12-month period ended August 31, 2015? How did those strategies help or hinder the Fund's performance? A On the relative value side of the portfolio, which seeks to realize gains regardless of market direction, one strategy we use is to seek to take advantage of the slope of the spread (yield) curve for individual corporate bond issuers. For instance, the long-term debt of companies with weaker balance sheets may react more strongly to changes in business conditions than the same companies' short term debt. Within this strategy, a curve trade in retailer Radio Shack added to the Fund's performance during the period, while a curve trade in gaming company Caesars Entertainment detracted. On the whole, the Fund's long/short curve trading strategies contributed positively to returns over the 12-month period. Another positive contributor to performance was based on our view that the sharp decline in oil prices during the period had affected the investment-grade debt of energy firms to a disproportionate extent. We took a portfolio position designed to benefit from an eventual narrowing of spreads for such credits versus the overall investment-grade bond universe, while shorting an index that represented the broader investment-grade universe in an attempt to eliminate market risk. This strategy worked out well for the Fund as spreads for investment-grade energy credits eventually began to normalize against other investment-grade bonds. Our utilization of credit index tranches, while shorting the overall market index, also benefited the Fund's performance during the period. This strategy allowed the Fund to efficiently accentuate its exposure to certain index constituents that are more susceptible to overall changes in business conditions. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 5 We have been cautious with respect to credit markets in general, and high-yield corporates in particular, given the spread tightening that has occurred. We did, however, successfully take positions in corporate bonds, including high-yield issues, on weakness at various points during the period. The Fund also benefited from long positions in both commercial mortgage-backed (CMBS) and residential mortgage-backed securities (MBS), as credit profiles of existing borrowers improved along with the domestic economic backdrop. As the period progressed, we reduced the portfolio's MBS exposure based on our view that the segment had become close to fairly valued. The Fund's currency strategies aided returns during the period as we positioned the portfolio from a macroeconomic perspective in order to benefit from the relative strengthening of the U.S. dollar. In particular, we went long the U.S. dollar in the portfolio, while shorting the euro, the Japanese yen, and the Swedish krona. In addition, we were long the U.S. dollar versus a number of currencies that were affected by fears of slowing economic growth in China; specifically, the Korean won, Taiwan dollar, Singapore dollar and Australian dollar. The Fund also benefited by taking positions in specific issuers where we believe the market's views, from a credit-default perspective, were excessively pessimistic. Specifically, we took long positions in relatively short-term obligations of such issuers, while attempting to hedge out the impact of the broader market's performance. Our management of the Fund's interest-rate exposures detracted modestly from returns during the period. The portfolio had a short-duration stance in the United States at various times as longer-term rates declined. (Duration is a measure of the sensitivity of the price - the value of principal - of a fixed-income investment to a change in interest rates, expressed as a number of years.) The short-duration position was based on our view that U.S. rates would rise as the Federal Reserve System (the Fed) solidified expectations for when it would begin to hike its benchmark rate. However, the market remained sanguine with respect to the rates outlook, and the yield curve flattened. We eventually removed the position from the portfolio, based on the significant level of market uncertainty about the U.S. economic trajectory and over the timing of any Fed action on interest rates in response to that uncertainty. On the directional side of the portfolio, we will take long or short positions in fixed-income markets and securities based on our performance outlook, while attempting to hedge out interest-rate risk. The Fund's directional trading became challenged as volatility spiked in the latter part of the period. 6 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 Q Could you discuss the use of derivative positions in the portfolio during the 12-month period ended August 31, 2015, and their effect on the Fund's performance? A Virtually all of the portfolio's strategies are implemented via derivatives, and so the Fund's performance will always be affected by derivatives trading. For instance, when we want to short U.S. Treasuries, we will do so mainly by selling Treasury futures or sometimes by buying "put" options. (A "put" option is a contractual agreement that gives the contract owner the right, but not the obligation, to sell a security at a pre-determined, fixed price for a certain period of time, regardless of the current market price of that security.) Similarly, in the currency sleeve of the Fund, we use forwards and options to gain the desired exposures. With respect to credit markets, where there are no liquid futures contracts, we may use credit default swaps to manage the portfolio's exposures. In other situations, we utilize instruments such as interest-rate or inflation swaps to implement our strategies. Q What is your assessment of the current macroeconomic climate and the opportunities it may present? A The portfolio is currently positioned neutrally with respect to U.S. interest rates. While we believe the Fed will be justified in raising rates given the relative strength of the U.S. economy, weaker conditions overseas and investment flows into the United States could keep expectations tempered with respect to longer-term Treasury yields. We believe the timing of the Fed's first rate hike is less important than the trajectory and ultimate endpoint of the increases over the next few years. That will depend on whether the U.S. economy displays sufficient strength to support a traditional rate-hiking cycle, as defined by the cycle's pace and end point. It appears to us that the market is currently somewhat more pessimistic about the U.S. economy than is the Fed. In general, asset valuations appear to be ahead of economic growth trends. At the same time, corporate balance sheets are in good shape. At present, we see relatively few directional investment opportunities in the fixed-income markets. CMBS continue to appear attractively valued on a relative basis, while spreads for corporate bonds have widened to a degree where we are now actively evaluating the asset class. The Fed's extraordinarily supportive policies have helped to underpin conditions in recent years. While the beginning of Fed policy tightening is anticipated to a large degree by the market, volatility and performance dispersion could still increase as the speculation about increased rates moves out of the realm of benign prospect and becomes a reality. Slowing economic growth in China and the impact of oil prices on different countries and sectors will also be closely monitored by investors. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 7 On balance, we expect an environment of heightened volatility across fixed-income markets that could very well provide opportunities for the portfolio's relative value strategies. In such an environment, we will be focused on identifying the opportunities that do emerge as market reactions overshoot developments on various macroeconomic fronts. Please refer to the Schedule of Investments on pages 17-27 for a full listing of Fund securities. All investments are subject to risk, including the possible loss of principal. The Fund may invest in derivative securities, such as options, futures, inverse floating-rate obligations, and swaps, among others, which can be illiquid, may disproportionately increase losses, and have a potentially large impact on the performance of the Fund. The Fund may take short positions, which involves leverage of its assets and presents additional risks. The Fund may invest in credit default swaps, which may in some cases be illiquid, and they increase credit risk since the Fund has exposure to both the issuer of the referenced obligation and the counterparty to the credit default swap. The Fund employs leverage, which increases the volatility of investment returns and subjects the Fund to magnified losses. Investments in fixed-income securities involve interest rate, credit, inflation, and reinvestment risks. When interest rates rise, the prices of fixed-income securities in the Fund will generally fall. Conversely, when interest rates fall, the prices of fixed-income securities in the Fund will generally rise. Investments in the Fund are subject to possible loss due to the financial failure of issuers of underlying securities and their inability to meet their debt obligations. Investments in high-yield or lower-rated securities are subject to greater-than- average price volatility, illiquidity and possibility of default. Prepayment risk is the chance that an issuer may exercise its right to prepay its security, if falling interest rates prompt the issuer to do so. Forced to reinvest the unanticipated proceeds at lower interest rates, the Fund would experience a decline in income and lose the opportunity for additional price appreciation. The securities issued by U.S. Government sponsored entities (e.g., FNMA, Freddie Mac) are neither guaranteed nor issued by the U.S. Government. 8 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 The Fund may invest in mortgage-backed securities, which during times of fluctuating interest rates may increase or decrease more than other fixed-income securities. Mortgage-backed securities are also subject to pre-payments. Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, economic, and political conditions. The Fund may invest in event-linked bonds and other insurance-linked securities. The return of principal and the payment of interest on insurance-linked securities are contingent on the non-occurrence of a pre-defined "trigger" event, such as a hurricane or an earthquake of a specific magnitude. The Fund may invest in floating-rate loans; the value of collateral, if any, securing a floating-rate loan can decline or may be insufficient to meet the issuer's obligations or may be difficult to liquidate. The Fund is subject to currency risk, meaning that the Fund could experience losses based on changes in the exchange rate between non-U.S. currencies and the U.S. dollar. The Fund is non-diversified, which means that it can invest a large percentage of its assets in the securities of any one or more issuers. This increases the Fund's potential risk exposure. These risks may increase share price volatility. There is no assurance that these and other strategies used by the Fund will be successful. Please see the prospectus for a more complete discussion of the Fund's risks. Before investing, consider the product's investment objectives, risks, charges and expenses. Contact your advisor or Pioneer Investments for a prospectus or summary prospectus containing this information. Read it carefully. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. Past performance is no guarantee of future results. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 9 Portfolio Summary | 8/31/15 Portfolio Diversification -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] U.S. Government Securities 48.7% Temporary Cash Investment 25.6% Collateralized Mortgage Obligations 11.9% International Corporate Bonds 5.4% Asset Backed Securities 2.8% Mutual Fund 2.4% U.S. Corporate Bonds 2.3% U.S. Preferred Stocks 0.6% Senior Secured Loans 0.3% 10 Largest Holdings -------------------------------------------------------------------------------- (As a percentage of total long-term holdings)* 1. U.S. Treasury Bills, 0.0%, 9/10/15 8.15% -------------------------------------------------------------------------------- 2. U.S. Treasury Note, Floating Rate Note, 4/30/17 6.55 -------------------------------------------------------------------------------- 3. U.S. Treasury Note, Floating Rate Note, 1/31/16 6.55 -------------------------------------------------------------------------------- 4. U.S. Treasury Note, Floating Rate Note, 1/31/17 6.54 -------------------------------------------------------------------------------- 5. U.S. Treasury Note, Floating Rate Note, 7/31/16 6.54 -------------------------------------------------------------------------------- 6. U.S. Treasury Note, Floating Rate Note, 10/31/16 6.53 -------------------------------------------------------------------------------- 7. U.S. Treasury Note, Floating Rate Note, 4/30/16 6.53 -------------------------------------------------------------------------------- 8. U.S. Treasury Bills, 0.0%, 9/3/15 5.96 -------------------------------------------------------------------------------- 9. U.S. Treasury Bills, 0.0%, 9/24/15 3.69 -------------------------------------------------------------------------------- 10. PIMCO High Income Fund 3.26 -------------------------------------------------------------------------------- * This list excludes temporary cash investments and derivative instruments. Due to the exclusion of derivatives, the list may not represent the Fund's market exposures. See the Schedule of Investments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 10 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 Prices and Distributions | 8/31/15 Net Asset Value per Share -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Class 8/31/15 8/31/14 -------------------------------------------------------------------------------- A $9.89 $10.11 -------------------------------------------------------------------------------- C $9.82 $10.06 -------------------------------------------------------------------------------- Y $9.91 $10.13 -------------------------------------------------------------------------------- Distributions per Share: 9/1/14 - 8/31/15 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains -------------------------------------------------------------------------------- A $0.3284 $ -- $ -- -------------------------------------------------------------------------------- C $0.2784 $ -- $ -- -------------------------------------------------------------------------------- Y $0.3456 $ -- $ -- -------------------------------------------------------------------------------- Index Definitions -------------------------------------------------------------------------------- The Bank of America Merrill Lynch (BofA ML) 3-month US Treasury Bill Index is an unmanaged market index of U.S. Treasury securities maturing in 90 days, that assumes reinvestment of all income. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. It is not possible to invest directly in an index. The index defined here pertains to the "Value of $10,000 Investment" and "Value of $5 Million Investment" charts appearing on pages 12-14. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 11 Performance Update | 8/31/15 Class A Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class A shares of Pioneer Long/Short Opportunistic Credit Fund at public offering price during the periods shown, compared to that of the Bank of America Merrill Lynch (BofA ML) 3-month US Treasury Bill Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- Net Public BofA ML Asset Offering 3-Month Value Price U.S. Treasury Period (NAV) (POP) Bill Index -------------------------------------------------------------------------------- Life-of-Class (12/30/13) 1.33% -1.42% 0.03% 1 Year 1.12 -3.47 0.03 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014, as revised June 1, 2015) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 3.03% 1.88% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Long/Short BofA ML 3-month Opportunistic Credit Fund US Treasury Bill Index 12/13 $9,550 $10,000 8/14 $9,656 $10,003 8/15 $9,764 $10,005 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 4.50% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2016, for Class A shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 12 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 Performance Update | 8/31/15 Class C Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class C Shares of Pioneer Long/Short Opportunistic Credit Fund during the periods shown, compared to that of the Bank of America Merrill Lynch (BofA ML) 3-month US Treasury Bill Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- BofA ML 3-Month If If U.S. Treasury Period Held Redeemed Bill Index -------------------------------------------------------------------------------- Life-of-Class (12/30/13) 0.60% 0.60% 0.03% 1 Year 0.40 0.40 0.03 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014, as revised June 1, 2015) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 3.76% 2.63% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Long/Short BofA ML 3-month Opportunistic Credit Fund US Treasury Bill Index 12/13 $10,000 $10,000 8/14 $10,060 $10,003 8/15 $10,101 $10,005 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2016, for Class C shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 13 Performance Update | 8/31/15 Class Y Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Class Y shares of Pioneer Long/Short Opportunistic Credit Fund during the periods shown, compared to that of the Bank of America Merrill Lynch (BofA ML) 3-month US Treasury Bill Index. Average Annual Total Returns (As of August 31, 2015) -------------------------------------------------------------------------------- Net BofA ML Asset 3-Month Value U.S. Treasury Period (NAV) Bill Index -------------------------------------------------------------------------------- Life-of-Class (12/30/13) 1.55% 0.03% 1 Year 1.29 0.03 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 31, 2014, as revised June 1, 2015) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.76% 1.63% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Long/Short BofA ML 3-month Opportunistic Credit Fund US Treasury Bill Index 12/13 $5,000,000 $5,000,000 8/14 $5,065,000 $5,001,378 8/15 $5,130,276 $5,002,692 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through January 1, 2016, for Class Y shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 14 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value (divided by) $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Long/Short Opportunistic Credit Fund Based on actual returns from March 1, 2015, through August 31, 2015. -------------------------------------------------------------------------------- Share Class A C Y -------------------------------------------------------------------------------- Beginning Account Value on 3/1/15 $1,000.00 $1,000.00 $1,000.00 -------------------------------------------------------------------------------- Ending Account Value (after expenses) on 8/31/15 $ 993.03 $ 988.87 $ 993.04 -------------------------------------------------------------------------------- Expenses Paid During Period* $ 8.79 $ 12.53 $ 7.54 -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratio of the underlying funds. These combined total were 1.75%, 2.50%, and 1.50% for Class A, Class C and Class Y shares respectively. These combined ratios were multiplied by the average account value over the period, multiplied by 184/365 (to reflect the one-half year period). Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 15 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Long/Short Opportunistic Credit Fund Based on a hypothetical 5% return per year before expenses, reflecting the period from March 1, 2015, through August 31, 2015. -------------------------------------------------------------------------------- Share Class A C Y -------------------------------------------------------------------------------- Beginning Account Value on 3/1/15 $1,000.00 $1,000.00 $1,000.00 -------------------------------------------------------------------------------- Ending Account Value (after expenses) on 8/31/15 $1,016.38 $1,012.60 $1,017.64 -------------------------------------------------------------------------------- Expenses Paid During Period* $ 8.89 $ 12.68 $ 7.63 -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratio of the underlying funds. These combined total were 1.75%, 2.50%, and 1.50% for Class A, Class C and Class Y shares respectively. These combined ratios were multiplied by the average account value over the period, multiplied by 184/365 (to reflect the one-half year period). 16 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 Schedule of Investments | 8/31/15 ----------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ----------------------------------------------------------------------------------------------- PREFERRED STOCKS -- 0.6% DIVERSIFIED FINANCIALS -- 0.6% Investment Banking & Brokerage -- 0.6% 12,000 7.12 Morgan Stanley, Floating Rate Note (Perpetual) $ 333,120 ----------- Total Diversified Financials $ 333,120 ----------------------------------------------------------------------------------------------- TOTAL PREFERRED STOCKS (Cost $340,923) $ 333,120 ----------------------------------------------------------------------------------------------- ASSET BACKED SECURITIES -- 2.9% BANKS -- 0.3% Thrifts & Mortgage Finance -- 0.3% 40,013 1.50 First Franklin Mortgage Loan Trust 2003-FFC, Floating Rate Note, 11/25/32 $ 38,299 41,165 Icon Brand Holdings LLC, 4.229%, 1/26/43 (144A) 41,362 26,895 3.20 Irwin Whole Loan Home Equity Trust 2003-C, Floating Rate Note, 6/25/28 26,867 44,920 5.47 New Century Home Equity Loan Trust, Floating Rate Note, 8/25/34 45,518 ----------- $ 152,046 ----------- Total Banks $ 152,046 ----------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 2.6% Other Diversified Financial Services -- 0.2% 85,000 TAL Advantage V LLC, 4.1%, 2/22/39 $ 85,552 ----------------------------------------------------------------------------------------------- Asset Management & Custody Banks -- 2.4% 660,000 RMAT 2015-1 LLC, 5.0%, 7/27/20 (Step) (144A) $ 648,450 660,000 VOLT XXXVII LLC, 4.375%, 7/25/45 (Step) (144A) 648,178 ----------- $ 1,296,628 ----------- Total Diversified Financials $ 1,382,180 ----------------------------------------------------------------------------------------------- TOTAL ASSET BACKED SECURITIES (Cost $1,539,632) $ 1,534,226 ----------------------------------------------------------------------------------------------- COLLATERALIZED MORTGAGE OBLIGATIONS -- 12.1% BANKS -- 12.1% Thrifts & Mortgage Finance -- 12.1% 300,000 1.16 Alternative Loan Trust 2005-J4, Floating Rate Note, 7/25/35 $ 271,258 180,000 2.72 BAMLL Commercial Mortgage Securities Trust 2014-INLD, Floating Rate Note, 12/17/29 (144A) 165,962 250,000 6.17 Banc of America Commercial Mortgage Trust 2007-5, Floating Rate Note, 2/10/51 256,467 150,000 Bear Stearns Commercial Mortgage Securities Trust 2006-PWR14, 5.273%, 12/11/38 151,131 120,000 2.78 Carefree Portfolio Trust 2014-CARE, Floating Rate Note, 11/15/19 (144A) 117,138 The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 17 Schedule of Investments | 8/31/15 (continued) ----------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value ----------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 250,000 4.80 CFCRE 2015-RUM Mortgage Trust, Floating Rate Note, 7/15/30 (144A) $ 250,085 300,000 3.21 Citigroup Commercial Mortgage Trust 2014-GC23 REMICS, Floating Rate Note, 7/12/47 (144A) 217,102 155,000 5.96 COBALT CMBS Commercial Mortgage Trust 2007-C3, Floating Rate Note, 5/15/46 147,759 47,000 5.96 COBALT CMBS Commercial Mortgage Trust 2007-C3, Floating Rate Note, 5/15/46 42,204 175,000 5.57 COBALT Commercial Mortgage Trust 2007-C2, Floating Rate Note, 4/15/47 175,483 175,000 COMM 2006-C8 Mortgage Trust, 5.377%, 12/10/46 175,108 510,000 5.80 COMM 2007-C9 Mortgage Trust, Floating Rate Note, 12/10/49 (144A) 482,784 175,000 5.23 Credit Suisse First Boston Mortgage Securities Corp., Floating Rate Note, 12/17/40 174,776 300,000 5.10 Credit Suisse First Boston Mortgage Securities Corp., Floating Rate Note, 8/15/38 294,946 400,000 4.89 CSMC Trust 2015-SAND, Floating Rate Note, 8/15/30 (144A) 400,007 92,613 4.94 EQTY 2014-MZ Mezzanine Trust, Floating Rate Note, 5/8/31 (144A) 91,432 100,000 3.38 GAHR Commercial Mortgage Trust 2015-NRF, Floating Rate Note, 12/15/19 (144A) 93,648 125,000 4.94 GS Mortgage Securities Corp II Series 2005-GG4, Floating Rate Note, 7/10/39 122,819 250,000 5.55 GS Mortgage Securities Trust 2006-GG6, Floating Rate Note, 4/10/38 249,452 200,000 JP Morgan Chase Commercial Mortgage Securities Trust 2006-CIBC16, 5.623%, 5/12/45 201,789 775,000 5.35 LB-UBS Commercial Mortgage Trust 2005-C7, Floating Rate Note, 11/15/40 (144A) 790,735 187,500 5.28 LB-UBS Commercial Mortgage Trust 2006-C1, Floating Rate Note, 2/15/41 188,474 260,000 5.33 Merrill Lynch Mortgage Trust 2005-CKI1, Floating Rate Note, 11/12/37 260,285 70,000 5.48 ML-CFC Commercial Mortgage Trust 2006-3, Floating Rate Note, 7/12/46 70,658 340,000 4.80 PFP 2015-2, Ltd., Floating Rate Note, 7/14/34 (144A) 340,019 250,000 5.56 Wachovia Bank Commercial Mortgage Trust Series 2005-C22, Floating Rate Note, 12/15/44 250,310 125,000 5.95 Wachovia Bank Commercial Mortgage Trust Series 2007-C34, Floating Rate Note, 5/15/46 129,357 195,000 Wells Fargo Commercial Mortgage Trust 2010-C1, 4.0%, 11/18/43 (144A) 178,417 The accompanying notes are an integral part of these financial statements. 18 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 --------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value --------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 200,000 3.70 Wells Fargo Commercial Mortgage Trust 2014-TISH, Floating Rate Note, 1/15/27 (144A) $ 196,881 ----------- $ 6,486,486 ----------- Total Banks $ 6,486,486 --------------------------------------------------------------------------------------------------- TOTAL COLLATERALIZED MORTGAGE OBLIGATIONS (Cost $6,440,703) $ 6,486,486 --------------------------------------------------------------------------------------------------- CORPORATE BONDS -- 7.9% ENERGY -- 3.2% Integrated Oil & Gas -- 2.5% 1,310,000 Petrobras Global Finance BV, 3.875%, 1/27/16 $ 1,309,306 --------------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 0.7% 400,000 Chesapeake Energy Corp., 3.25%, 3/15/16 $ 393,000 ----------- Total Energy $ 1,702,306 --------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 0.9% Aerospace & Defense -- 0.9% 525,000 Bombardier, Inc., 7.5%, 3/15/18 (144A) $ 490,875 ----------- Total Capital Goods $ 490,875 --------------------------------------------------------------------------------------------------- BANKS -- 2.3% Diversified Banks -- 2.3% 300,000 6.50 Bank of America Corp., Floating Rate Note, 10/23/49 $ 309,000 300,000 5.90 Citigroup, Inc., Floating Rate Note (Perpetual) 294,750 300,000 6.62 Credit Agricole SA, Floating Rate Note (Perpetual) (144A) 294,166 325,000 6.50 ING Groep NV, Floating Rate Note (Perpetual) 311,797 ----------- $ 1,209,713 ----------- Total Banks $ 1,209,713 --------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.1% Other Diversified Financial Services -- 0.1% INR 3,700,000 European Bank for Reconstruction & Development, 6.0%, 3/3/16 $ 55,415 ----------- Total Diversified Financials $ 55,415 --------------------------------------------------------------------------------------------------- INSURANCE -- 1.4% Reinsurance -- 1.4% 250,000 6.86 Caelus Re, Ltd., Floating Rate Note, 4/7/17 (Cat Bond) (144A) $ 256,100 250,000 4.52 Kilimanjaro Re, Ltd., Floating Rate Note, 4/30/18 (Cat Bond) (144A) 244,825 250,000 4.51 Residential Reinsurance 2012, Ltd., Floating Rate Note, 12/6/16 (Cat Bond) (144A) 252,175 ----------- $ 753,100 ----------- Total Insurance $ 753,100 --------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 19 Schedule of Investments | 8/31/15 (continued) --------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (unaudited) Value --------------------------------------------------------------------------------------------------- TOTAL CORPORATE BONDS (Cost $4,301,086) $ 4,211,409 --------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATIONS -- 49.6% 1,300,000 U.S. Cash Management Bills, 0.0%, 9/15/15 (c) $ 1,299,961 850,000 U.S. Treasury Bills, 0.0%, 11/5/15 (c) 850,017 3,295,000 U.S. Treasury Bills, 0.0%, 9/10/15 (c) 3,294,997 1,290,000 U.S. Treasury Bills, 0.0%, 9/17/15 (c) 1,290,001 1,490,000 U.S. Treasury Bills, 0.0%, 9/24/15 (c) 1,490,003 2,410,000 U.S. Treasury Bills, 0.0%, 9/3/15 (c) 2,410,000 2,645,000 0.10 U.S. Treasury Note, Floating Rate Note, 1/31/16 (d) 2,645,447 2,640,000 0.13 U.S. Treasury Note, Floating Rate Note, 1/31/17 2,642,096 2,640,000 0.10 U.S. Treasury Note, Floating Rate Note, 10/31/16 (d) 2,641,249 2,640,000 0.12 U.S. Treasury Note, Floating Rate Note, 4/30/16 (d) 2,640,935 2,645,000 0.12 U.S. Treasury Note, Floating Rate Note, 4/30/17 2,646,561 2,640,000 0.12 U.S. Treasury Note, Floating Rate Note, 7/31/16 (d) 2,641,315 --------------------------------------------------------------------------------------------------- TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATIONS (Cost $26,486,986) $26,492,582 --------------------------------------------------------------------------------------------------- SENIOR FLOATING RATE LOAN INTERESTS -- 0.1%** ENERGY -- 0.1% Integrated Oil & Gas -- 0.1% 50,000 7.50 Chief Exploration & Development LLC, Term Loan, 6.50%, 5/16/21 $ 43,792 ----------- Total Energy $ 43,792 --------------------------------------------------------------------------------------------------- TOTAL SENIOR FLOATING RATE LOAN INTERESTS (Cost $49,588) $ 43,792 --------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------- Shares --------------------------------------------------------------------------------------------------- MUTUAL FUND -- 2.5% 138,805 PIMCO High Income Fund $ 1,315,871 ----------- (Cost $1,348,831) $ 1,315,871 --------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------- Number of Strike Expiration Contracts Description Counterparty Price Date --------------------------------------------------------------------------------------------------- PUT OPTIONS PURCHASED -- 1.2% 101 S&P500 EMINI Citibank NA $1,670 12/18/15 $ 138,370 101 S&P500 EMINI Citibank NA $1,985 12/18/15 510,050 --------------------------------------------------------------------------------------------------- TOTAL PUT OPTIONS PURCHASED $ 648,420 ----------- (Premiums paid $311,114) $ 648,420 --------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 20 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 --------------------------------------------------------------------------------------------------- Principal Amount ($) Value --------------------------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENTS -- 26.1% Commercial Papers -- 9.8% 2,635,000 BNP Paribas, Discount Note, 9/1/15 $ 2,634,993 2,635,000 Societe Generale North America, Inc., Discount Note, 9/1/15 2,635,001 ----------- $ 5,269,994 --------------------------------------------------------------------------------------------------- Repurchase Agreement -- 16.3% 8,700,000 $6,000,000 RBC Capital Markets LLC, 0.13%, dated 8/31/15 plus accrued interest on 9/1/15 collateralized by the following: $2,738,163 Government National Mortgage Association II, 1.625% - 4.5%, 8/20/40 - 8/20/45 $655,248 Government National Mortgage Association I, 2.554% - 5.0%, 2/15/40 - 5/20/65 $218,175 Freddie Mac Giant, 3.5% - 4.5%, 11/1/41 - 1/1/45 $1,028,023 Federal Home Loan Mortgage Corp., 2.229% - 2.854%, 5/1/44 - 5/1/45 $1,906,541 Federal National Mortgage Association (ARM), 2.298% - 3.318%, 6/1/36 - 3/1/44 $2,327,850 Federal National Mortgage Association, 2.5% - 5.5%, 2/1/26 - 8/1/45 $ 8,700,000 --------------------------------------------------------------------------------------------------- TOTAL TEMPORARY CASH INVESTMENTS (Cost $13,970,000) $13,969,994 --------------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 103.0% (Cost $54,788,863) (a) $55,035,900 --------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------- Number of Strike Expiration Contracts Description Counterparty Price Date --------------------------------------------------------------------------------------------------- PUT OPTIONS WRITTEN -- (1.0)% (101) S&P500 EMINI Citibank NA $1,775 12/18/15 $ (213,615) (101) S&P500 EMINI Citibank NA $1,880 12/18/15 (328,250) --------------------------------------------------------------------------------------------------- TOTAL PUT OPTIONS WRITTEN (Premiums received $249,436) $ (541,865) --------------------------------------------------------------------------------------------------- OTHER ASSETS & LIABILITIES -- (2.0)% $(1,043,588) --------------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $53,450,447 =================================================================================================== (144A) Security is exempt from registration under Rule 144A of the Securities Act of 1933. Such securities may be resold normally to qualified institutional buyers in a transaction exempt from registration. At August 31, 2015, the value of these securities amounted to $6,200,341 or 11.6% of total net assets. (Cat Bond) Catastrophe or Event Linked Bond. At August 31, 2015, the value of these securities amounted to $753,100, or 1.4% of total net assets. See Notes to Financial Statements -- Note 1I. (Perpetual) Security with no stated maturity date. (Step) Bond issued with an initial coupon rate which converts to a higher rate at a later date. The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 21 Schedule of Investments | 8/31/15 (continued) REMICS Real Estate Mortgage Investment Conduits. ** Senior floating rate loan interests in which the Fund invests generally pay interest at rates that are periodically redetermined by reference to a base lending rate plus a premium. These base lending rates are generally (i) the lending rate offered by one or more major European banks, such as LIBOR (London InterBank Offered Rate), (ii) the prime rate offered by one or more major United States banks, (iii) the certificate of deposit rate or (iv) other base lending rates used by commercial lenders. The rate shown is the coupon rate at period end. (a) At August 31, 2015, the net unrealized appreciation on investments based on cost for federal income tax purposes of $54,788,863 was as follows: Aggregate gross unrealized appreciation for all investments in which there is an excess of value over tax cost $ 407,650 Aggregate gross unrealized depreciation for all investments in which there is an excess of tax cost over value (160,613) --------- Net unrealized appreciation $ 247,037 ========= (b) Debt obligation with a variable interest rate. Rate shown is rate at end of period. (c) Security issued with a zero coupon. Income is earned through accretion of discount. (d) A portion of this security has been pledged as collateral for swaps contracts. NOTE: Principal amounts are denominated in U.S. Dollars unless otherwise noted: INR Indian Rupee Purchases and sales of securities (excluding temporary cash investments) for the year ended August 31, 2015 were as follows: ----------------------------------------------------------------- Purchases Sales ----------------------------------------------------------------- Long-Term U.S. Government $12,147,636 $ - Other Long-Term Securities $21,736,291 $26,747,926 CENTRALLY CLEARED CREDIT DEFAULT SWAP AGREEMENTS -- BUY PROTECTION ---------------------------------------------------------------------------------------------------------------- Net Premiums Unrealized Notional Obligation Expiration Paid Appreciation Principal ($) Counterparty Entity/Index Coupon Date (Received) (Depreciation) ---------------------------------------------------------------------------------------------------------------- (3,055,000) Chicago Markit CDX North 1.00% 6/20/20 $ (44,885) $ 6,707 Mercantile America Investment Exchange Grade Index (1,506,500) Chicago Markit CDX North 5.00% 12/20/16 (89,787) 11,553 Mercantile America High Exchange Yield Index (4,108,500) Chicago Markit CDX North 5.00% 6/20/20 (201,941) (22,661) Mercantile America High Exchange Yield Index EUR (2,750,000) Intercontinental Markit iTraxx Europe 5.00% 6/20/19 (401,921) 42,506 Exchange Consumer Index ---------------------------------------------------------------------------------------------------------------- $(738,534) $ 38,105 ================================================================================================================ The accompanying notes are an integral part of these financial statements. 22 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 CREDIT DEFAULT SWAP AGREEMENTS -- BUY PROTECTION ---------------------------------------------------------------------------------------------------------------- Net Premiums Unrealized Notional Obligation Expiration Paid Appreciation Principal ($) Counterparty Entity/Index Coupon Date (Received) (Depreciation) ---------------------------------------------------------------------------------------------------------------- (225,000) Barclays Morgan Stanley 1.00% 9/20/20 $ (1,888) $ 477 Bank Plc (1,185,600) Citibank NA Markit CDX North 5.00% 12/20/18 (234,749) 48,595 America High Yield Index (550,000) Goldman Sachs Domtar Corp. 1.00% 9/20/20 13,772 1,506 International (364,800) Goldman Sachs MBIA, Inc. 5.00% 9/20/20 101,232 1,871 International EUR (1,500,000) Goldman Sachs Norske 5.00% 9/20/17 806,509 (990) International Skogindustrier ASA (225,000) JPMorgan Bank of 1.00% 9/20/20 (3,350) 910 Chase Bank NA America Corp. (580,000) JPMorgan Best Buy Co., Inc. 5.00% 9/20/20 (73,135) (16,238) Chase Bank NA (225,000) JPMorgan Citigroup, Inc. 1.00% 9/20/20 (2,224) 862 Chase Bank NA EUR (220,000) JPMorgan Credit Agricole SA 1.00% 9/20/20 (2,883) (333) Chase Bank NA EUR (225,000) JPMorgan ING Bank NV 1.00% 9/20/20 (3,728) (605) Chase Bank NA ---------------------------------------------------------------------------------------------------------------- $ 599,556 $ 36,055 ================================================================================================================ CREDIT DEFAULT SWAP AGREEMENTS -- SELL PROTECTION ------------------------------------------------------------------------------------------------------------------ Net Premiums Unrealized Notional Obligation Credit Expiration Paid Appreciation Principal ($)(1) Counterparty Entity/Index Coupon Rating(2) Date (Received) (Depreciation) ------------------------------------------------------------------------------------------------------------------ EUR 900,000 Barclays Abengoa SA 5.00% B+ 12/20/16 $ (73,997) $(234,596) Bank Plc 400,000 Barclays Ally 5.00% BB+ 9/20/20 61,746 2,092 Bank Plc Financial, Inc. 700,000 Barclays Apache Corp. 1.00% BBB+ 9/20/20 (19,785) 1,721 Bank Plc 400,000 Barclays Apache Corp. 1.00% BBB+ 9/20/20 (8,879) (1,444) Bank Plc 845,000 Barclays Devon 1.00% BBB+ 9/20/20 (33,141) 13,741 Bank Plc Energy Corp. 545,000 Barclays Frontier 5.00% BB- 9/20/20 (5,501) (1,416) Bank Plc Communications Corp. The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 23 Schedule of Investments | 8/31/15 (continued) CREDIT DEFAULT SWAP AGREEMENTS -- SELL PROTECTION --------------------------------------------------------------------------------------------------------------------- Net Premiums Unrealized Notional Obligation Credit Expiration Paid Appreciation Principal ($)(1) Counterparty Entity/Index Coupon Rating(2) Date (Received) (Depreciation) --------------------------------------------------------------------------------------------------------------------- 550,000 Barclays Mcclatchy Co. 5.00% CCC 6/20/16 $ -- $ 3,803 Bank Plc 250,000 Barclays Norske 5.00% CCC- 12/20/15 (52,243) 34,398 Bank Plc Skogindustrier ASA 520,000 Barclays Toys R Us, Inc. 5.00% CCC 3/20/16 (2,600) (12,426) Bank Plc 500,000 Citibank NA Energy Transfer 1.00% BBB- 9/20/20 (13,614) (3,872) Partners LP 600,000 Citibank NA Energy Transfer 1.00% BBB- 9/20/20 (19,101) (1,882) Partners LP 600,000 Citibank NA Kinder 1.00% BBB- 9/20/20 (22,361) (8,804) Morgan, Inc. 655,000 Citibank NA Markit CDX 5.00% BBB+ 12/20/17 (32,095) (26,825) North America Investment Grade Index EUR 2,500,000 Citibank NA Markit iTraxx 1.00% A- 6/20/19 (216,543) 128,896 Europe Index 250,000 Citibank NA Parker Drilling Co. 5.00% B+ 9/20/20 (16,875) (9,070) 350,000 Citibank NA Parker Drilling Co. 5.00% B+ 9/20/20 (35,000) (1,322) 1,135,000 Goldman Sachs AK Steel Corp. 5.00% B- 12/20/16 (28,375) 70 International 305,000 Goldman Sachs Ally Financial, Inc. 5.00% BB+ 9/20/20 46,723 1,954 International 300,000 Goldman Sachs Clair's 5.00% CC 12/20/15 (12,000) (2,012) International Stores, Inc. 525,000 Goldman Sachs iHeart 5.00% CCC- 12/20/15 (14,437) 13,052 International Communications 885,000 Goldman Sachs iHeart 5.00% CCC- 12/20/16 (48,675) (69,644) International Communications 550,000 Goldman Sachs Frontier 5.00% BB- 9/20/20 (9,538) 2,558 International Communications Corp. 364,800 Goldman Sachs MBIA, Inc. 5.00% A- 12/20/16 (41,952) (5,089) International EUR 250,000 Goldman Sachs Norske 5.00% CCC- 3/20/16 (5,481) (40,722) International Skogindustrier ASA EUR 1,500,000 Goldman Sachs Norske 5.00% CCC- 9/20/20 (1,192,960) (362) International Skogindustrier ASA The accompanying notes are an integral part of these financial statements. 24 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 CREDIT DEFAULT SWAP AGREEMENTS -- SELL PROTECTION --------------------------------------------------------------------------------------------------------------------- Net Premiums Unrealized Notional Obligation Credit Expiration Paid Appreciation Principal ($)(1) Counterparty Entity/Index Coupon Rating(2) Date (Received) (Depreciation) --------------------------------------------------------------------------------------------------------------------- 150,000 Goldman Sachs Peabody 5.00% B- 3/20/16 $ (11,250) $ (6,422) International Energy Corp. 525,000 Goldman Sachs Sears Roebuck 5.00% B 12/20/15 (21,000) 25,076 International Acceptance Corp. 300,000 Goldman Sachs Toys R Us, Inc. 5.00% CCC 12/20/15 (10,500) 8,575 International EUR 400,000 JPMorgan Abengoa SA 5.00% B+ 12/20/15 (31,981) 4,624 Chase Bank NA 500,000 JPMorgan Diamond 1.00% NR 9/20/20 (48,109) (10,647) Chase Offshore Drill Bank NA 600,000 JPMorgan Diamond 1.00% BBB+ 9/20/20 (77,765) 7,258 Chase Offshore Bank NA Drilling, Inc. 500,000 JPMorgan Kinder 1.00% BBB- 9/20/20 (21,839) (4,131) Chase Morgan, Inc. Bank NA 500,000 JPMorgan Nabors 1.00% BBB 9/20/20 (36,630) (14,106) Chase Industries, Inc. Bank NA 600,000 JPMorgan Nabors 1.00% BBB 9/20/20 (54,426) (6,458) Chase Industries, Inc. Bank NA 500,000 JPMorgan Noble Holding 1.00% BBB 9/20/20 (54,147) (25,801) Chase International, Ltd. Bank NA EUR 250,000 JPMorgan Norske 5.00% CCC- 12/20/15 (50,506) 32,661 Chase Skogindustrier Bank NA ASA 500,000 JPMorgan Weatherford 1.00% BBB- 9/20/20 (36,630) (39,143) Chase International, Ltd. Bank NA 600,000 JPMorgan Weatherford 1.00% BBB- 9/20/20 (74,387) (16,540) Chase International, Ltd. Bank NA 525,000 Morgan JC Penney 5.00% CCC- 12/20/16 (15,750) 38,136 Stanley Corp., Inc. Capital Services LLC 400,000 Morgan Markit CDX 5.00% BBB+ 12/20/17 (14,500) (21,482) Stanley North America Capital Investment Services LLC Grade Index The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 25 Schedule of Investments | 8/31/15 (continued) CREDIT DEFAULT SWAP AGREEMENTS -- SELL PROTECTION --------------------------------------------------------------------------------------------------------------------- Net Premiums Unrealized Notional Obligation Credit Expiration Paid Appreciation Principal ($)(1) Counterparty Entity/Index Coupon Rating(2) Date (Received) (Depreciation) --------------------------------------------------------------------------------------------------------------------- 250,000 Morgan MBIA, Inc. 5.00% A- 12/20/15 $ (3,125) $ 2,432 Stanley Capital Services LLC 250,000 Morgan MBIA, Inc. 5.00% A- 12/20/15 (13,750) 13,057 Stanley Capital Services LLC 875,000 Morgan Sears Roebuck 5.00% B 12/20/16 (24,063) 3,947 Stanley Acceptance Capital Corp. Services LLC --------------------------------------------------------------------------------------------------------------------- $(2,397,042) $(226,165) ===================================================================================================================== (1) The notional amount is the maximum amount that a seller of credit protection would be obligated to pay upon occurrence of a credit event. (2) Based on Standard & Poor's rating of the issuer or weighted average of all the underlying securities of the index. NR Not rated by either S&P. NOTE: Principal amounts are denominated in U.S. Dollars unless otherwise noted: EUR Euro INTEREST RATE SWAP AGREEMENTS ----------------------------------------------------------------------------------------------------- Annual Premiums Net Notional Pay/ Floating Fixed Expiration Paid Unrealized Principal ($) Counterparty Receive Rate Rate Date (Received) Depreciation ----------------------------------------------------------------------------------------------------- (951,858) JPMorgan Receive LIBOR USD 1.810% 8/7/19 $ 4 $(15,488) Chase Bank NA 3 Month (1,018,659) JPMorgan Receive LIBOR USD 2.200% 5/6/25 8 (4,286) Chase Bank NA 3 Month ----------------------------------------------------------------------------------------------------- $12 $(19,774) ===================================================================================================== Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Level 1 - quoted prices in active markets for identical securities. Level 2 - other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) See Notes to Financial Statements -- Note 1A. Level 3 - significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) See Notes to Financial Statements -- Note 1A. Generally, equity securities are categorized as Level 1, fixed income securities and senior loans as Level 2 and securities valued using fair value methods (other than prices supplied by independent pricing services or broker-dealers) are categorized as Level 3. See Notes to Financial Statements -- Note 1A. The accompanying notes are an integral part of these financial statements. 26 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 The following is a summary of the inputs used as of August 31, 2015, in valuing the Fund's assets: --------------------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total --------------------------------------------------------------------------------------------------- Preferred Stocks $ 333,120 $ -- $ -- $ 333,120 Asset Backed Securities -- 1,534,226 -- 1,534,226 Collateralized Mortgage Obligations -- 6,486,486 -- 6,486,486 Corporate Bonds -- 4,211,409 -- 4,211,409 U.S. Government and Agency Obligations -- 26,492,582 -- 26,492,582 Senior Floating Rate Loan Interests -- 43,792 -- 43,792 Mutual Fund 1,315,871 -- -- 1,315,871 Put Options Purchased 648,420 -- -- 648,420 Commercial Papers -- 5,269,994 -- 5,269,994 Repurchase Agreement -- 8,700,000 -- 8,700,000 --------------------------------------------------------------------------------------------------- Total $ 2,297,411 $ 52,738,489 $ -- $55,035,900 =================================================================================================== Other Financial Instruments Unrealized Depreciation on Credit Default Swaps $ -- $ (152,005) $ -- $ (152,005) Unrealized Depreciation on Interest Rate Swaps -- (19,774) -- (19,774) Written Options (541,865) -- -- (541,865) Unrealized Depreciation on Futures Contracts (547) -- -- (547) Unrealized Appreciation on Forward Foreign Currency Contracts -- 88,009 -- 88,009 Unrealized Depreciation on Forward Foreign Currency Contracts -- (67,121) -- (67,121) --------------------------------------------------------------------------------------------------- Total Other Financial Instruments $ (542,412) $ (150,891) $ -- $ (693,303) =================================================================================================== During the year ended August 31, 2015, there were no transfers between Levels 1, 2 and 3. The following is a summary of the fair valuation of certain Fund's assets as of August 31, 2015: -------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total -------------------------------------------------------------------------------- Assets: Foreign currencies, at value $ -- $112,709 $ -- $112,709 Centrally cleared swap collateral -- 717,291 -- 717,291 Variation margin for futures contracts 153 -- -- 153 Variation margin for centrally cleared swap contracts -- 8,919 -- 8,919 -------------------------------------------------------------------------------- Total $ 153 $838,919 $ -- $839,072 ================================================================================ The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 27 Statement of Assets and Liabilities | 8/31/15 ASSETS: Investment in securities (cost $46,088,863) $46,335,900 Repurchase agreements (cost $8,700,000) 8,700,000 --------------------------------------------------------------------------------------- Total investment in securities (cost $54,788,863) 55,035,900 Cash 1,262,067 Foreign currencies, at value (cost $112,590) 112,709 Centrally cleared swap collateral 717,291 Receivables -- Investment securities sold 47,847 Swap payments 743,786 Dividend 17,672 Interest 89,748 Due from Pioneer Investment Management, Inc. 28,540 Variation margin for futures contracts 153 Variation margin for centrally cleared swap contracts 8,919 Net unrealized appreciation on forward foreign currency contracts 88,009 Other assets 26,127 --------------------------------------------------------------------------------------- Total assets $58,178,768 ======================================================================================= LIABILITIES: Payables -- Investment securities purchased $ 1,299,963 Trustee fees 1,194 Net unrealized depreciation on forward foreign currency contracts 67,121 Net unrealized depreciation on swap contracts 171,779 Net unrealized depreciation on futures contracts 547 Swap contracts, net premiums received 2,536,008 Written options (premiums received $249,436) 541,865 Due to affiliates 29,898 Accrued expenses 79,946 --------------------------------------------------------------------------------------- Total liabilities $ 4,728,321 ======================================================================================= NET ASSETS: Paid-in capital $54,098,551 Undistributed of net investment income 868,797 Accumulated net realized loss on investments, futures contracts, written options, swap contracts, and foreign currency transactions (1,323,960) Net unrealized appreciation on investments 247,037 Net unrealized depreciation on futures contracts (547) Net unrealized depreciation on written options (292,429) Net unrealized depreciation on swap contracts (171,779) Net unrealized appreciation on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 24,777 --------------------------------------------------------------------------------------- Total net assets $53,450,447 ======================================================================================= NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $11,479,077/1,161,262 shares) $ 9.89 Class C (based on $9,364,486/954,099 shares) $ 9.82 Class Y (based on $32,606,884/3,291,532 shares) $ 9.91 MAXIMUM OFFERING PRICE: Class A ($9.89 / 95.5%) $ 10.36 ======================================================================================= The accompanying notes are an integral part of these financial statements. 28 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 Statement of Operations For the Year Ended 8/31/15 INVESTMENT INCOME: Dividends $ 176,262 Interest 454,670 ---------------------------------------------------------------------------------------- Total investment income $ 630,932 ---------------------------------------------------------------------------------------- EXPENSES: Management fees $ 376,861 Distribution fees Class A 24,640 Class C 88,035 Transfer Agent fees Class A 895 Class C 465 Class Y 442 Shareholder communications expense 3,863 Administrative reimbursement 25,970 Custodian fees 44,255 Registration fees 62,233 Professional fees 91,622 Printing fees 39,738 Pricing fees 19,135 Fees and expenses of nonaffiliated Trustees 6,600 Miscellaneous 17,058 ---------------------------------------------------------------------------------------- Total expenses $ 801,812 ---------------------------------------------------------------------------------------- Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (213,966) ---------------------------------------------------------------------------------------- Net expenses $ 587,846 ---------------------------------------------------------------------------------------- Net investment income $ 43,086 ---------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS, FUTURES CONTRACTS, WRITTEN OPTIONS, SWAP CONTRACTS AND FOREIGN CURRENCY TRANSACTIONS: Net realized gain (loss) on: Investments $(285,587) Futures contracts (539,400) Written options 284,541 Swap contracts 171,882 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 721,492 $ 352,928 ---------------------------------------------------------------------------------------- Change in net unrealized appreciation (depreciation) on: Investments $ 177,366 Futures contracts 85,365 Written options (407,633) Swap contracts (172,003) Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (180,094) $(496,999) ---------------------------------------------------------------------------------------- Net realized and unrealized loss on investments, futures contracts, written options, swap contracts, and foreign currency transactions $(144,071) ---------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $(100,985) ======================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 29 Statements of Changes in Net Assets ------------------------------------------------------------------------------------------------- Year Ended 12/30/13 (a) 8/31/15 to 8/31/14 ------------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income (loss) $ 43,086 $ (53,880) Net realized gain (loss) on investments, futures contracts, written options, swap contracts, and foreign currency transactions 352,928 (2,748) Change in net unrealized appreciation (depreciation) on investments, futures contracts, swap contracts, and foreign currency transactions (496,999) 304,058 ------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from operations $ (100,985) $ 247,430 ------------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.33 and $0.00 per share, respectively) $ (290,990) $ -- Class C ($0.28 and $0.00 per share, respectively) (237,127) -- Class Y ($0.35 and $0.00 per share, respectively) (292,420) -- ------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (820,537) $ -- ------------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: (b)(c) Net proceeds from sale of shares $30,657,269 $ 25,836,911 Reinvestment of distributions 820,545 -- Cost of shares repurchased (3,141,008) (49,178) ------------------------------------------------------------------------------------------------- Net increase in net assets resulting from Fund share transactions $28,336,806 $ 25,787,733 ------------------------------------------------------------------------------------------------- Net increase in net assets $27,415,284 $ 26,035,163 NET ASSETS: Beginning of year $26,035,163 $ -- ------------------------------------------------------------------------------------------------- End of year $53,450,447 $ 26,035,163 ------------------------------------------------------------------------------------------------- Undistributed of net investment income $ 868,797 $ 536,247 ================================================================================================= (a) Class A, Class C and Class Y shares commenced operations on December 30, 2013. (b) At August 31, 2015, PIM owned 47.7% of the value of the outstanding shares of Pioneer Long/Short Opportunistic Credit Fund. (c) At August 31, 2015, Pioneer Asset Allocation Trust owned 34.0% of the value of the outstanding shares of Pioneer Long/Short Opportunistic Credit Fund. The accompanying notes are an integral part of these financial statements. 30 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------------ Year Year Year Year Ended Ended Ended Ended 8/31/15 8/31/15 8/31/14 8/31/14 Shares Amount Shares Amount ------------------------------------------------------------------------------------------ Class A* Shares sold 345,034 $ 3,451,984 895,300 $8,956,897 Reinvestment of distributions 29,815 290,998 -- -- Less shares repurchased (107,896) (1,072,297) (991) (10,000) ------------------------------------------------------------------------------------------ Net increase 266,953 $ 2,670,685 894,309 $8,946,897 ========================================================================================== Class C* Shares sold 113,452 $ 1,133,511 836,825 $8,368,181 Reinvestment of distributions 24,346 237,127 -- -- Less shares repurchased (19,101) (188,852) (1,423) (14,178) ------------------------------------------------------------------------------------------ Net increase 118,697 $ 1,181,786 835,402 $8,354,003 ========================================================================================== Class Y* Shares sold 2,603,899 $26,071,774 851,088 $8,511,833 Reinvestment of distributions 29,930 292,420 -- -- Less shares repurchased (190,908) (1,879,859) (2,477) (25,000) ------------------------------------------------------------------------------------------ Net increase 2,442,921 $24,484,335 848,611 $8,486,833 ========================================================================================== * Class A, Class C and Class Y shares commenced operations on December 30, 2013. The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 31 Financial Highlights ------------------------------------------------------------------------------------ Year Ended 12/30/13 8/31/15 to 8/31/14 ------------------------------------------------------------------------------------ Class A Net asset value, beginning of period $ 10.11 $ 10.00 ------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income (loss) $ 0.06 $ (0.01) Net realized and unrealized gain (loss) on investments 0.05 0.12 ------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 0.11 $ 0.11 ------------------------------------------------------------------------------------ Distribution to shareowners: Net investment income $ (0.33) $ -- ------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ (0.22) $ 0.11 ------------------------------------------------------------------------------------ Net asset value, end of period $ 9.89 $ 10.11 ==================================================================================== Total return* 1.12% 1.10%(a) Ratio of net expenses to average net assets 1.70% 1.70%** Ratio of net investment income (loss) to average net assets 0.35% (0.15)%** Portfolio turnover rate 130% 100%** Net assets, end of period (in thousands) $11,479 $ 9,040 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 2.39% 2.85%** Net investment income (loss) to average net assets (0.34)% (1.30)%** ==================================================================================== * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. (a) Not annualized. The accompanying notes are an integral part of these financial statements. 32 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 ------------------------------------------------------------------------------------ Year Ended 12/30/13 8/31/15 to 8/31/14 ------------------------------------------------------------------------------------ Class C Net asset value, beginning of period $ 10.06 $ 10.00 ------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income (loss) $ (0.02) $ (0.06) Net realized and unrealized gain (loss) on investments 0.06 0.12 ------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 0.04 $ 0.06 ------------------------------------------------------------------------------------ Distribution to shareowners: Net investment income $ (0.28) $ -- ------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ (0.24) $ 0.06 ------------------------------------------------------------------------------------ Net asset value, end of period $ 9.82 $ 10.06 ==================================================================================== Total return* 0.40% 0.60%(a) Ratio of net expenses to average net assets 2.45% 2.45%** Ratio of net investment income (loss) to average net assets (0.34)% (0.91)%** Portfolio turnover rate 130% 100%** Net assets, end of period (in thousands) $ 9,364 $ 8,403 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 3.13% 3.58%** Net investment income (loss) to average net assets (1.02)% (2.04)%** ==================================================================================== * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. (a) Not annualized. The accompanying notes are an integral part of these financial statements. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 33 Financial Highlights (continued) ------------------------------------------------------------------------------------ Year Ended 12/30/13 8/31/15 to 8/31/14 ------------------------------------------------------------------------------------ Class Y Net asset value, beginning of period $ 10.13 $ 10.00 ------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income (loss) $ 0.09 $ 0.01(a) Net realized and unrealized gain (loss) on investments 0.04 0.12 ------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 0.13 $ 0.13 ------------------------------------------------------------------------------------ Distribution to shareowners: Net investment income $ (0.35) $ -- ------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ (0.22) $ 0.13 ------------------------------------------------------------------------------------ Net asset value, end of period $ 9.91 $ 10.13 ==================================================================================== Total return* 1.29% 1.30%(b) Ratio of net expenses to average net assets 1.45% 1.45%** Ratio of net investment income (loss) to average net assets 0.28% 0.10%**(a) Portfolio turnover rate 130% 100%** Net assets, end of period (in thousands) $32,607 $ 8,592 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses to average net assets 2.06% 2.58%** Net investment income (loss) to average net assets (0.33)% (1.03)%** ==================================================================================== * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. (a) The amount shown for a share outstanding does not correspond to the Net Investment Loss on the Statement of Operations due to the timing of sales and repurchases of shares. (b) Not annualized. The accompanying notes are an integral part of these financial statements. 34 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 Notes to Financial Statements | 8/31/15 1. Organization and Significant Accounting Policies Pioneer Long/Short Opportunistic Credit Fund (the Fund) is one of five portfolios comprising Pioneer Series Trust V, a Delaware statutory trust. The Fund is registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The Fund's investment objective is to seek total return. The Fund offers three classes of shares designated as Class A, Class C and Class Y shares. Class A, Class C and Class Y shares commenced operations on December 30, 2013. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different rates of class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends from net investment income earned by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per-share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per-share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Each share class has exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. There is no distribution plan for Class Y shares. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gains and losses on investments during the reporting period. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements: A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Fund is computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. Fixed income securities are valued at prices supplied by independent pricing services, which consider such factors as market prices, market events, quotations from Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 35 one or more brokers, Treasury spreads, yields, maturities and ratings. Valuations may be supplemented by dealers and other sources, as required. Senior floating rate loan interests (senior loans) are valued in accordance with guidelines established by the Board of Trustees at the mean between the last available bid and asked prices from one or more brokers or dealers as obtained from Loan Pricing Corporation an independent pricing service. If price information is not available from Loan Pricing Corporation, or if the price information is deemed to be unreliable, price information will be obtained from an alternative loan interest pricing service. If no reliable price quotes are available from either the primary or alternative pricing service, broker quotes will be solicited. Event-linked bonds are valued at the bid price obtained from an independent third party pricing service. Other insurance-linked securities may be valued at the bid price obtained from an independent pricing service, or through a third party using a pricing matrix, insurance industry valuation models, or other fair value methods or techniques to provide an estimated value of the instrument. Equity securities that have traded on an exchange are valued at the last sale price on the principal exchange where they are traded. Equity securities that have not traded on the date of valuation, or securities for which sale prices are not available, generally are valued using the mean between the last bid and asked prices. Shares of money market mutual funds are valued at such funds' net asset value. Cash may include overnight time deposits at approved financial institutions. Trading in foreign securities is substantially completed each day at various times prior to the close of the NYSE. The values of such securities used in computing the net asset value of the Fund's shares are determined as of such times. Securities or loan interests for which independent pricing services are unable to supply prices or for which market prices and/or quotations are not readily available or are considered to be unreliable are valued by a fair valuation team comprised of certain personnel of Pioneer Investment Management, Inc. (PIM), the Fund's investment adviser, pursuant to procedures adopted by the Fund's Board of Trustees. PIM's fair valuation team uses fair value methods approved by the Valuation Committee of the Board of Trustees. Inputs used when applying fair value methods to value a security may include credit ratings, the financial condition of the company, current market conditions and comparable securities. The Fund may use fair value methods if it is determined that a significant event has occurred after the close of the exchange or market on which the security trades and prior to the determination of the Fund's net asset value. Examples of a significant event might include political or economic news, corporate restructurings, natural disasters, terrorist activity or trading halts. Thus, the valuation of the Fund's securities may differ significantly from 36 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 exchange prices and such differences could be material. PIM's fair valuation team is responsible for monitoring developments that may impact fair valued securities and for discussing and assessing fair values on an ongoing basis, and at least quarterly, with the Valuation Committee of the Board of Trustees. At August 31, 2015, no securities were valued using fair value methods (other than securities valued using prices supplied by independent pricing services or broker-dealers or using a third party insurance industry pricing model). B. Investment Income & Transactions Principal amounts of mortgage-backed securities are adjusted for monthly paydowns. Premiums and discounts related to certain mortgage-backed securities are amortized or accreted in proportion to the monthly paydowns. All discounts/premiums on purchase prices of debt securities are accreted/ amortized for financial reporting purposes over the life of the respective securities, and such accretion/amortization is included in interest income. Dividend income is recorded on the ex-dividend date except that certain dividends from foreign securities where the ex-dividend date may have passed are recorded as soon as the Fund becomes aware of the ex-dividend data in the exercise of reasonable diligence. Interest income is recorded on the accrual basis. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. C. Foreign Currency Translation The books and records of the Fund are maintained in U.S. dollars. Amounts denominated in foreign currencies are translated into U.S. dollars using current exchange rates. Net realized gains and losses on foreign currency transactions, if any, represent, among other things, the net realized gains and losses on foreign currency contracts, disposition of foreign currencies and the difference between the amount of income accrued and the U.S. dollars actually received. Further, the effects of changes in foreign currency exchange rates on investments are not segregated in the statement of operations from the effects of changes in the market price of those securities but are included with the net realized and unrealized gain or loss on investments. D. Futures Contracts The Fund may enter into futures transactions in order to attempt to hedge against changes in interest rates, securities prices and currency exchange rates or to seek to increase total return. Futures contracts are types of derivatives. All futures contracts entered into by the Fund are traded on a futures exchange. Upon entering into a futures contract, the Fund is required Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 37 to deposit with a broker an amount of cash or securities equal to the minimum "initial margin" requirements of the associated futures exchange. Subsequent payments for futures contracts ("variation margin") are paid or received by the Fund, depending on the daily fluctuation in the value of the contracts, and are recorded by the Fund as unrealized gains or losses. When the contract is closed, the Fund realizes a gain or loss equal to the difference between the opening and closing value of the contract as well as any fluctuation in foreign currency exchange rates where applicable. The use of futures contracts involves, to varying degrees, elements of market, interest rate, currency exchange rate and counterparty risks, which may exceed the amount recognized by the Fund. Changes in value of the contracts may not directly correlate to the changes in value of the underlying securities. The average value of contracts open during the year ended August 31, 2015 was $(9,230,856). At August 31, 2015, open futures contracts were as follows: --------------------------------------------------------------------------- Number of Contracts Settlement Unrealized Type Long/(Short) Month/Year Value Depreciation --------------------------------------------------------------------------- U.S. 5 Year Note (1) 9/15 $(119,812) $ (547) --------------------------------------------------------------------------- $(119,812) $ (547) =========================================================================== E. Forward Foreign Currency Contracts The Fund may enter into forward foreign currency contracts (contracts) for the purchase or sale of a specific foreign currency at a fixed price on a future date. All contracts are marked to market daily at the applicable exchange rates, and any resulting unrealized appreciation or depreciation is recorded in the Fund's financial statements. The Fund records realized gains and losses at the time a contract is offset by entry into a closing transaction or extinguished by delivery of the currency. Risks may arise upon entering into these contracts from the potential inability of counterparties to meet the terms of the contract and from unanticipated movements in the value of foreign currencies relative to the U.S. dollar (see Note 5). F. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal income tax provision is required. As of August 31, 2015, the Fund did not accrue any interest or penalties with respect to uncertain tax positions, which, if applicable, would be recorded as an income tax expense in the Statement of Operations. Tax returns filed within the prior three years remain subject to examination by federal and state tax authorities. 38 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 The amount and character of income and capital gain distributions to shareowners are determined in accordance with federal income tax rules, which may differ from U.S. generally accepted accounting principles. Distributions in excess of net investment income or net realized gains are temporary overdistributions for financial statement purposes resulting from differences in the recognition or classification of income or distributions for financial statement and tax purposes. Capital accounts within the financial statements are adjusted for permanent book/tax differences to reflect tax character, but are not adjusted for temporary differences. At August 31, 2015, the Fund reclassified $1,110,001 to increase undistributed net investment income and $1,110,001 to increase accumulated net realized loss on investments to reflect permanent book/tax differences. These adjustments have no impact on net assets or the results of operations. At August 31, 2015, the Fund was permitted to carry forward indefinitely $294,883 of long-term losses and $984,747 of short-term losses under the Regulated Investment Company Modernization Act of 2010 without limitation. The tax character of distributions paid during the fiscal years ended August 31, 2015 was as follows: --------------------------------------------------------------------------- 2015 --------------------------------------------------------------------------- Distributions paid from: Ordinary income $820,537 --------------------------------------------------------------------------- Total $820,537 =========================================================================== The following shows the components of distributable earnings (losses) on a federal income tax basis at August 31, 2015: --------------------------------------------------------------------------- 2015 --------------------------------------------------------------------------- Distributable earnings: Undistributed ordinary income $ 1,167,384 Capital loss carryforward (1,279,630) Unrealized depreciation (535,858) --------------------------------------------------------------------------- Total $ (648,104) =========================================================================== The difference between book-basis and tax-basis net unrealized depreciation is attributable to the tax adjustments relating to credit default swaps and the mark to market of forwards, swaps, options and future contracts. G. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), earned $213 in underwriting commissions on the sale of Class A shares during the year ended August 31, 2015. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 39 H. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on its respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A and Class C shares of the Fund, respectively (see Note 4). Class Y shares do not pay distribution fees. All expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services are allocated among the classes of shares based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner and at the same time, except that net investment income dividends to Class A, Class C and Class Y shares can reflect different transfer agent and distribution expense rates. I. Risks Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates and economic and political conditions. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making the Fund more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. The Fund's prospectus contains unaudited information regarding the Fund's principal risks. Please refer to that document when considering the Fund's principal risks. The Fund invests in event-linked bonds. Event-linked bonds are floating rate debt obligations for which the return of principal and the payment of interest are contingent on the non-occurrence of a pre-defined "trigger" event, such as a hurricane or an earthquake of a specific magnitude. The trigger event's magnitude may be based on losses to a company or industry, industry indexes or readings of scientific instruments, or may be based on specified actual losses. If a trigger event, as defined within the terms of an event-linked bond occurs, the Fund may lose a portion or all of its accrued interest and/or principal invested in such event-linked bond. The Fund is entitled to receive principal and interest payments so long as no trigger event occurs of the description and magnitude specified by the instrument. In addition to the specified trigger events, event-linked bonds may expose the Fund to other risks, including but not limited to issuer (credit) default, adverse regulatory or jurisdictional interpretations and adverse tax consequences. 40 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 In addition to event-linked bonds, the Fund also may invest in other insurance-linked securities ("ILS"). The Fund's investments in ILS may include special purpose vehicles ("SPVs") or similar instruments structured to comprise a portion of a reinsurer's catastrophe-oriented business, known as quota share instruments (sometimes referred to as reinsurance sidecars), or to provide reinsurance relating to specific risks to insurance or reinsurance companies through a collateralized instrument, known as collateralized reinsurance. Structured reinsurance investments also may include industry loss warranties ("ILWs"), are subject to the same risks as event-linked bonds. In addition, because quota share instruments represent an interest in a basket of underlying reinsurance contracts, the Fund has limited transparency into the individual underlying contracts and therefore must rely upon the risk assessment and sound underwriting practices of the issuer. Accordingly, it may be more difficult for PIM to fully evaluate the underlying risk profile of the Fund's investment in quota share instruments and therefore place the Fund's assets at greater risk of loss than if PIM had more complete information. These securities may be difficult to purchase, sell or unwind and may be difficult to value. J. Credit Default Swaps A credit default swap is a contract between a buyer of protection and a seller of protection against a pre-defined credit event. The Fund may sell or buy credit default swap contracts to seek to increase the Fund's income, or to attempt to hedge the risk of default on Fund securities. A credit default swap index is used to hedge risk or take a position on a basket of credit entities or indices. As a seller of protection, the Fund would be required to pay the notional (or other agreed-upon) value of the referenced debt obligation to the counterparty in the event of a default by a U.S. or foreign corporate issuer of a debt obligation, which would likely result in a loss to the Fund. In return, the Fund would receive from the counterparty a periodic stream of payments during the term of the contract provided that no event of default occurred. The maximum exposure of loss to the seller would be the notional value of the credit default swaps outstanding. If no default occurs, the Fund would keep the stream of payments and would have no payment obligation. The Fund may also buy credit default swap contracts in order to hedge against the risk of default of debt securities, in which case the Fund would function as the counterparty referenced above. When the Fund enters into a credit default swap contract, the protection buyer makes an up front payment to the protection seller in exchange for the rights to receive a contingent payment. An up front payment made by the Fund, as the protection buyer, is recorded as an asset in the Statement of Assets and Liabilities. Periodic payments received or paid by the Fund are recorded as realized gains or losses in the Statement of Operations. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 41 Credit default swap contracts are marked-to-market daily using valuations supplied by independent sources and the change in value, if any, is recorded as unrealized appreciation or depreciation in the Statement of Assets and Liabilities. Payments received or made as a result of a credit event or upon termination of the contract are recognized, net of the appropriate amount of the upfront payment, as realized gains or losses in the Statement of Operations. Credit default swap contracts involving the sale of protection may involve greater risks than if the Fund had invested in the referenced debt instrument directly. Credit default swap contracts are subject to general market risk, liquidity risk, counterparty risk and credit risk. If the Fund is a protection buyer and no credit event occurs, it will lose its investment. If the Fund is a protection seller and a credit event occurs, the value of the referenced debt instrument received by the Fund, together with the periodic payments received, may be less than the amount the Fund pays to the protection buyer, resulting in a loss to the Fund. Certain swap contracts that are cleared through a central clearinghouse are referred to as centrally cleared swaps. All payments made or received by the Fund are pursuant to a centrally cleared swap contract with the central clearing party rather than the original counterparty. Upon entering into a centrally cleared swap contract, the Fund is required to make an initial margin deposit, either in cash or in securities. The daily change in value on open centrally cleared contracts is recorded as variation margin on centrally cleared swaps on the Statement of Assets and Liabilities. Open credit default swap contracts at August 31, 2015 are listed in the Schedule of Investments. The average value of credit default swap contracts open during the year ended August 31, 2015 was $(1,192,932). K. Interest Rate Swap Contracts The Fund may enter into interest rate swaps to attempt to hedge against interest rate fluctuations or to enhance its income. Pursuant to the interest rate swap agreement, the Fund negotiates with a counterparty to exchange a periodic stream of payments based on a benchmark interest rate. One cash flow stream will typically be a floating rate payment based upon the specified floating benchmark interest rate while the other is typically a fixed interest rate. Payment flows are usually netted against each other, with the difference being paid by one party to the other on a monthly basis. Periodic payments received or paid by the Fund are recorded as realized gains or losses in the Statement of Operations. Interest rate swap contracts are marked-to-market daily using valuations supplied by independent sources 42 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 and the change in value, if any, is recorded as unrealized appreciation or depreciation in the Statement of Assets and Liabilities. Interest rate swap contracts are subject to counterparty risk and movements in interest rates. Open interest rate swap contracts at August 31, 2015 are listed in the Schedule of Investments. The average value of interest rate swap contracts open during the year ended August 31, 2015 was $(74,410). L. Credit Default Swaption Writing The Fund may write put and covered call swaptions on portfolio securities in order to attempt to hedge against changes in the value of portfolio securities or to seek to increase total return. When a swaption is written, the Fund receives a premium and becomes obligated to purchase or sell the underlying security at a fixed price upon the exercise of the swaption. When the Fund writes a swaption, an amount equal to the premium received by the Fund is recorded as a liability and is subsequently adjusted to the current value of the swaption written. Premiums received from writing swaptions that expire unexercised are treated by the Fund on the expiration date as realized gains from investments. The difference between the premium and the amount paid on effecting a closing purchase transaction, including brokerage commissions, is also treated as a realized gain or, if the premium is less than the amount paid for the closing purchase transaction, as a realized loss. If a call swaption is exercised, the premium is added to the proceeds from the sale of the underlying security in determining whether the Fund has realized a gain or loss. The Fund as writer of a swaption bears the market risk of an unfavorable change in the price of the security underlying the written swaption. The average value of contracts open during the year ended August 31, 2015 was $422. The Fund did not hold any written swaption contracts at August 31, 2015. Transactions in written swaptions for the year ended August 31, 2015 are summarized as follows: --------------------------------------------------------------------------- Number of Premiums Contracts Received --------------------------------------------------------------------------- Options outstanding at beginning of period (10,200,000) $(134,640) Options opened (5,360,000) (26,532) Options exercised -- -- Options closed -- -- Options expired 15,560,000 161,172 --------------------------------------------------------------------------- Options outstanding at end of period -- $ -- =========================================================================== Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 43 M. Option Writing The Fund may write put and covered call options to seek to increase total return. When an option is written, the Fund receives a premium and becomes obligated to purchase or sell the underlying security at a fixed price, upon the exercise of the option. When the Fund writes an option, an amount equal to the premium received by the Fund is recorded as a liability and is subsequently adjusted to the current value of the option written. Premiums received from writing options that expire unexercised are treated by the Fund on the expiration date as realized gains from investments. The difference between the premium and the amount paid on effecting a closing purchase transaction, including brokerage commissions, is also treated as a realized gain, or, if the premium is less than the amount paid for the closing purchase transaction, as a realized loss. If a call option is exercised, the premium is added to the proceeds from the sale of the underlying security in determining whether the Fund has realized a gain or loss. The Fund as writer of an option bears the market risk of an unfavorable change in the price of the security underlying the written option. The average value of written options contracts open during the year ended August 31, 2015 was ($96,176). Written call and put option contracts outstanding at period end are listed at the end of the Fund's schedule of investments. The Fund held two written put option contracts that were open at August 31, 2015. If the put options were exercised at August 31, 2015, the maximum amount the Fund would have been required to pay was $249,436. --------------------------------------------------------------------------- Number of Premiums Contracts Received --------------------------------------------------------------------------- Options outstanding at beginning of period -- $ -- Options opened (1,044) (471,370) Options exercised -- -- Options closed 376 153,349 Options expired 466 68,585 --------------------------------------------------------------------------- Options outstanding at end of period (202) $(249,436) =========================================================================== N. Options Purchased The Fund may purchase put and call options in order to seek to increase total return. Purchased call and put options entitle the Fund to buy and sell a specified number of shares or units of a particular security, currency or index at a specified price at a specific date or within a specific period of time. Upon the purchase of a call or put option, the premium paid by the Fund is included in the Statement of Assets and Liabilities as an investment. All premiums are marked-to-market daily, and any unrealized appreciation or depreciation are recorded in the Fund's financial statements. As the purchaser 44 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 of an index option, the Fund has the right to receive a cash payment equal to any depreciation in the value of the index below the strike price of the option (in the case of a put) or equal to any appreciation in the value of the index over the strike price of the option (in the case of a call) as of the valuation date of the option. Premiums paid for purchased calls and put options which have expired are treated as realized losses on investments in the Statement of Operations. Upon the exercise or closing of a purchased put option, the premium is offset against the proceeds on the sale of the underlying security or financial instrument in order to determine the realized gain or loss on investments. Upon the exercise or closing of a purchased call option, the premium is added to the cost of the security or financial instrument. The risk associated with purchasing options is limited to the premium originally paid. The average value of purchased options contracts open during the year ended August 31, 2015 was $115,007. Purchased option contracts outstanding at period end are listed within the Fund's schedule of investments. O. Repurchase Agreements With respect to repurchase agreements entered into by the Fund, the value of the underlying securities (collateral), including accrued interest, is required to be equal to or in excess of the repurchase price. The collateral for all repurchase agreements is held in safekeeping in the customer-only account of the Fund's custodian or a subcustodian of the Fund. PIM is responsible for determining that the value of the collateral remains at least equal to the repurchase price. 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredit, manages the Fund's portfolio. Management fees are calculated daily at an annual rate of 1.15% of the average daily net assets of the Fund up to $1 billion and 1.05% of the Fund's average daily net assets over $1 Billion. For the year ended August 31, 2015, the management fee was equivalent to 1.15% of the Fund's average daily net assets. PIM has contractually agreed to limit ordinary operating expenses to the extent required to reduce Fund expenses to 1.70%, 2.45% and 1.45% of the average daily net assets attributable to Class A, Class C and Class Y shares, respectively. These expense limitations are in effect through January 1, 2016. Fees waived and expenses reimbursed during the year ended August 31, 2015 are reflected on the Statement of Operations. Fees and expenses of other investment companies in which the Fund may invest are not included in the expense limitations noted above. There can be no assurance that PIM will extend the expense limitation agreement for a class of shares beyond the date referred to above. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 45 In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund as administrative reimbursements. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $28,331 in management fees, administrative costs and certain other reimbursements payable to PIM at August 31, 2015. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimburses PIMSS for out-of-pocket expenses incurred by PIMSS related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the year ended August 31, 2015, such out-of-pocket expenses by class of shares were as follows: -------------------------------------------------------------------------------- Shareholder Communications: -------------------------------------------------------------------------------- Class A $2,359 Class C 519 Class Y 985 -------------------------------------------------------------------------------- Total $3,863 ================================================================================ Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $229 in transfer agent fees and out-of-pocket reimbursements payable to PIMSS at August 31, 2015. 4. Distribution Plan The Fund has adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A and Class C shares. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Pursuant to the Plan, the Fund also pays PFD 1.00% of the average daily net assets attributable to Class C shares. The fee for Class C shares consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class C shares. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $1,338 in distribution fees payable to PFD at August 31, 2015. In addition, redemptions of each class of shares (except Class Y shares) may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within 12 months of purchase. Redemptions of Class C shares within 46 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 12 months of purchase are subject to a CDSC of 1.00%, based on the lower of cost or market value of shares being redeemed. Shares purchased as part of an exchange remain subject to any CDSC that applied to the original purchase of those shares. There is no CDSC for Class Y. Proceeds from the CDSCs are paid to PFD. For the year ended August 31, 2015, no CDSCs were paid to PFD. 5. Forward Foreign Currency Contracts At August 31, 2015, the Fund had entered into various forward foreign currency contracts that obligate the Fund to deliver or take delivery of currencies at specified future maturity dates. Alternatively, prior to the settlement date of a forward foreign currency contract, the Fund may close out such contract by entering into an offsetting contract. The average value of forward foreign currency contracts open during the year ended August 31, 2015 was $(3,718,272). Open forward foreign currency contracts at August 31, 2015 were as follows: ------------------------------------------------------------------------------------------------ Net Currency Quantity Currency Quantity Settlement Unrealized Purchased Purchased Sold Sold Counterparty Date Appreciation ------------------------------------------------------------------------------------------------ EUR 726,603 USD 814,051 Brown Brothers 9/16/15 $ 2,231 Harriman & Co. EUR 444,417 USD 485,020 Citibank NA 9/16/15 14,248 USD 754,497 EUR 661,668 Citibank NA 10/19/15 10,767 USD 426,975 SGD 584,549 Citibank NA 10/26/15 13,340 USD 370,985 KRW 432,027,412 Citibank NA 10/26/15 6,159 USD 143,651 ZAR 1,887,323 Citibank NA 11/25/15 3,413 USD 345,430 HUF 95,967,053 Citibank NA 11/25/15 1,898 RUB 10,176,730 USD 157,376 JPMorgan 9/11/15 1,187 Chase Bank NA USD 142,625 KRW 165,595,000 JPMorgan 10/26/15 2,788 Chase Bank NA USD 249,616 CAD 326,516 JPMorgan 11/24/15 1,791 Chase Bank NA MXN 2,818,153 USD 165,747 JPMorgan 11/25/15 1,838 Chase Bank NA USD 168,428 AUD 230,203 JPMorgan 11/25/15 5,182 Chase Bank NA USD 348,004 CHF 331,043 JPMorgan 11/25/15 4,290 Chase Bank NA USD 257,244 NZD 387,238 JPMorgan 11/25/15 13,345 Chase Bank NA USD 439,988 EUR 386,270 JPMorgan 11/25/15 5,532 Chase Bank NA ------------------------------------------------------------------------------------------------ $ 88,009 ================================================================================================ Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 47 -------------------------------------------------------------------------------------------- Net Currency Quantity Currency Quantity Settlement Unrealized Purchased Purchased Sold Sold Counterparty Date Depreciation -------------------------------------------------------------------------------------------- EUR 661,422 USD 744,301 Brown Brothers 10/19/15 $ (848) Harriman & Co. MXN 1,143,832 CAD 92,251 Citibank NA 10/26/15 (1,854) USD 422,356 CZK 10,423,599 Citibank NA 10/26/15 (11,276) PLN 1,315,409 EUR 310,133 Citibank NA 11/25/15 (943) USD 151,213 RUB 10,025,453 JPMorgan 9/11/15 (4,993) Chase Bank NA USD 77,703 EUR 69,706 JPMorgan 10/19/15 (648) Chase Bank NA IDR 2,308,270,397 USD 167,896 JPMorgan 10/26/15 (5,742) Chase Bank NA INR 11,037,516 USD 170,959 JPMorgan 10/26/15 (6,256) Chase Bank NA MXN 5,604,836 CAD 453,932 JPMorgan 10/26/15 (10,524) Chase Bank NA USD 430,856 SEK 3,705,000 JPMorgan 10/26/15 (8,670) Chase Bank NA PLN 645,965 CZK 4,113,663 JPMorgan 11/25/15 (428) Chase Bank NA USD 602,504 JPY 73,696,495 JPMorgan 11/25/15 (6,500) Chase Bank NA USD 491,671 TWD 16,114,030 JPMorgan 11/25/15 (4,686) Chase Bank NA USD 164,678 MXN 2,832,377 JPMorgan 11/25/15 (3,753) Chase Bank NA -------------------------------------------------------------------------------------------- $ (67,121) ============================================================================================ 6. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS which may result in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the year ended August 31, 2015, the Fund's expenses were not reduced under such arrangements. 7. Assets and Liabilities Offsetting The Fund has entered into an International Swaps and Derivatives Association, Inc. Master Agreement ("ISDA Master Agreement") or similar agreement with substantially all its derivative counterparties. An ISDA Master Agreement is a bilateral agreement between the Fund and a counterparty that governs the trading of certain OTC derivatives and typically contains, among other things, close-out and set-off provisions which apply upon the occurrence of event of a default and/or termination event as defined under the relevant ISDA Master Agreement. The ISDA Master Agreement may also give a party the right to terminate all transactions traded under such agreement if, among other things, there is deterioration in the credit quality of the other party. Upon an event of default or a termination of the ISDA Master Agreement, the non-defaulting party has the right to close out all transactions under such agreement and to net amounts owed under each transaction to determine one net amount payable by one party to the other. The right to close out and net payments 48 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 across all transactions under the ISDA Master Agreement could result in a reduction of the Fund's credit risk to its counterparty equal to any amounts payable by the Fund under the applicable transactions, if any. However, the Fund's right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific ISDA counterparty is subject. The collateral requirements for derivatives transactions under an ISDA Master Agreement are governed by a credit support annex to the ISDA Master Agreement. Collateral requirements are generally determined at the close of business each day and are typically based on changes in market values for each transaction under an ISDA Master Agreement and netted into one amount for such agreement. Generally, the amount of collateral due from or to a counterparty is subject to threshold (a "minimum transfer amount") before a transfer is required, which may vary by counterparty. Collateral pledged for the benefit of the Fund and/or counterparty is held in segregated accounts by the Fund's custodian and cannot be sold, re-pledged, assigned or otherwise used while pledged. Cash that has been segregated to cover the Fund's collateral obligations, if any, will be reported separately in the Statement of Assets and Liabilities as "Futures collateral", "Swap Collateral" or "Deposit with broker." Securities pledged by the Fund as collateral, if any, are identified as such in the Schedule of Investments. Financial instruments subject to an enforceable master netting agreement such as an ISDA Master Agreement have been offset on the Statement of Assets and Liabilities. The following charts show gross assets and liabilities of the Fund as of August 31, 2015. ----------------------------------------------------------------------------------------------------- Derivative Assets Subject to Derivatives Non-Cash Cash Net Amount Master Netting Available Collateral Collateral of Derivative Counterparty Agreement for Offset Received (a) Received (a) Assets (b) ----------------------------------------------------------------------------------------------------- Barclays Bank Plc $ 56,232 $ (56,232) $ -- $ -- $ -- Citibank NA 227,316 (227,316) -- -- -- Goldman Sachs International 54,662 (54,662) -- -- -- JP Morgan Chase Bank NA 82,268 (82,268) -- -- -- Morgan Stanley Capital Services LLC 57,572 (21,482) -- -- 36,090 ----------------------------------------------------------------------------------------------------- $ 478,050 $(441,960) $ -- $ -- $ 36,090 ====================================================================================================== Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 49 --------------------------------------------------------------------------------------------------- Derivative Liabilities Subject to Derivatives Non-Cash Cash Net Amount Master Netting Available Collateral Collateral of Derivative Counterparty Agreement for Offset Pledged (a) Pledged (a) Liabilities (c) --------------------------------------------------------------------------------------------------- Barclays Bank Plc $ (249,882) $ 56,232 $193,650 $ -- -- Citibank NA (607,713) 227,316 380,397 -- -- Goldman Sachs International (125,241) 54,662 -- (70,579) JP Morgan Chase Bank NA (205,976) 82,268 123,708 -- -- Morgan Stanley Capital Services LLC (21,482) 21,482 -- -- --------------------------------------------------------------------------------------------------- $(1,210,294) $ 441,960 $697,755 $ -- $(70,579) =================================================================================================== (a) The amount presented here may be less than the total amount of collateral received/pledged as the net amount of derivative assets and liabilities cannot be less than $0. (b) Represents the net amount due from the counterparty in the event of default. (c) Represents the net amount payable to the counterparty in the event of default. 8. Additional Disclosures about Derivative Instruments and Hedging Activities: Values of derivative instruments as of August 31, 2015 were as follows: ---------------------------------------------------------------------------------------- Derivatives Not Accounted for as Asset Derivatives Liabilities Derivatives Hedging Instruments ----------------------------- ----------------------------- Under Accounting Statement of Assets Statement of Assets Standards Codification and Liabilities and Liabilities (ASC) 815 Location Value Location Value ---------------------------------------------------------------------------------------- Forward foreign Net unrealized Net unrealized currency contracts appreciation on depreciation on forward foreign forward foreign currency contracts $88,009 currency contracts $ 67,121 Written options Written options -- Written options 541,865 Swap contracts Net unrealized Net unrealized appreciation on depreciation on swap contracts -- swap contracts 171,779 Futures contracts Net unrealized -- Net unrealized appreciation on depreciation on futures contracts futures contracts 547 ---------------------------------------------------------------------------------------- Total $88,009 $781,312 ======================================================================================== 50 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 The effect of derivative instruments on the Statement of Operations for the year ended August 31, 2015 was as follows: ------------------------------------------------------------------------------------------------ Change in Derivatives Not Realized Unrealized Accounted for as Gain or Appreciation or Hedging Instruments (Loss) on (Depreciation) Under Accounting Location of Gain or (Loss) Derivatives on Derivatives Standards Codification on Derivatives Recognized Recognized Recognized in (ASC) 815 in Income in Income Income ------------------------------------------------------------------------------------------------ Forward foreign Net realized gain (loss) on currency contracts forward foreign currency contracts $ 816,728 Forward foreign Change in unrealized appreciation currency contracts (depreciation) on forward foreign currency contracts $(195,406) Written options Net realized gain (loss) on written options $ 284,541 Written options Change in net unrealized appreciation (depreciation) on Written options $(407,633) Futures contracts Net realized gain (loss) on futures contracts $(539,400) Futures contracts Change in net unrealized appreciation (depreciation) on futures contracts $ 85,365 Swap contracts Net realized gain (loss) on swap contracts $ 171,882 Swap contracts Change in net unrealized appreciation (depreciation) on swap contracts $(172,003) Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 51 Report of Independent Registered Public Accounting Firm To the Board of Trustees of Pioneer Series Trust V and the Shareowners of Pioneer Long/Short Opportunistic Credit Fund: -------------------------------------------------------------------------------- We have audited the accompanying statement of assets and liabilities of Pioneer Long/Short Opportunistic Credit Fund (the "Fund"), one of the portfolios constituting Pioneer Series Trust V, including the schedule of investments, as of August 31, 2015, and the related statement of operations for the year then ended, and the statement of changes in net assets and the financial highlights for the year then ended and for the period from December 30, 2013, (commencement of operations) through August 31, 2014. These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of August 31, 2015, by correspondence with the custodian and brokers and agent banks; where replies were not received from brokers and agent banks, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Pioneer Long/Short Opportunistic Credit Fund as of August 31, 2015, the results of its operations for the year then ended, and the changes in its net assets, and the financial highlights for the year then ended and for the period from December 30, 2013, (commencement of operations) through August 31, 2014, in conformity with accounting principles generally accepted in the United States of America. /s/ Deloitte & Touche LLP Boston, Massachusetts October 28, 2015 52 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 ADDITIONAL INFORMATION (unaudited) The percentages of the Fund's ordinary income distributions that are exempt from nonresident alien (NRA) tax withholding resulting from qualified interest income was 22.15% The qualifying percentage of the Fund's ordinary income dividends for the purpose of the corporate dividends received deduction was 13.79%. PIM, the Fund's investment adviser, is currently an indirect, wholly-owned subsidiary of UniCredit. On April 23, 2015, UniCredit announced that it signed a preliminary and exclusive agreement with Banco Santander and affiliates of Warburg Pincus and General Atlantic (the "Private Equity Firms") with respect to Pioneer Investments ("Pioneer") and Santander Asset Management ("SAM") (the "Transaction"). The Transaction, as described in the UniCredit announcement, will entail the establishment of a holding company, with the name Pioneer Investments, to be owned by UniCredit (50%) and the Private Equity Firms (50% between them). The holding company will control Pioneer's U.S. operations, including the Adviser. The holding company also will own 66.7% of Pioneer's and SAM's combined operations outside the U.S., while Banco Santander will own directly the remaining 33.3% stake. The completion of the Transaction is subject to the signing of a definitive agreement, as well as certain regulatory and corporate approvals, and other conditions. Under the Investment Company Act of 1940, completion of the Transaction will cause the Fund's investment advisory agreement with the Adviser to terminate. In connection with the Transaction, the Fund's Board of Trustees will be asked to approve a new investment advisory agreement for the Fund. If approved by the Board, the Fund's new investment advisory agreement will be submitted to the shareholders of the Fund for their approval. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 53 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Custodian and Sub-Administrator Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Deloitte & Touche LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Morgan, Lewis & Bockius LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at us.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at www.sec.gov. Trustees and Officers The Fund's Trustees and officers are listed below, together with their principal occupations during at least the past five years. Trustees who are interested persons of the Fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the Fund are referred to as Independent Trustees. Each of the Trustees serves as a Trustee of each of the 51 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the Fund is 60 State Street, Boston, Massachusetts 02109. The Statement of Additional Information of the Fund includes additional information about the Trustees and is available, without charge, upon request, by calling 1-800-225-6292. 54 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 Independent Trustees ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Thomas J. Perna (64) Trustee since 2013. Private investor (2004-2008 and Director, Broadridge Chairman of the Board Serves until a successor 2013-present); Chairman (2008-2013) and Financial Solutions, Inc. and Trustee trustee is elected or earlier Chief Executive Officer (2008-2012), (investor communications retirement or removal. Quadriserv, Inc. (technology products for and securities processing securities lending industry); and Senior provider for financial Executive Vice President, The Bank of New services industry) (2009- York (financial and securities services) present); Director, (1986-2004) Quadriserv, Inc. (2005-2013); and Commissioner, New Jersey State Civil Service Commission (2011-present) ------------------------------------------------------------------------------------------------------------------------------------ David R. Bock (71) Trustee since 2013. Managing Partner, Federal City Capital Director of New York Trustee Serves until a successor Advisors (corporate advisory services Mortgage Trust trustee is elected or earlier company) (1997-2004 and 2008-present); (publicly-traded mortgage retirement or removal. Interim Chief Executive Officer, Oxford REIT) (2004- 2009, Analytica, Inc. (privately-held research 2012-present); Director and consulting company) (2010); Executive of The Swiss Helvetia Vice President and Chief Financial Fund, Inc. (closed-end Officer, I-trax, Inc. (publicly traded fund) (2010-present); health care services company) Director of Oxford (2004-2007); and Executive Vice President Analytica, Inc. and Chief Financial Officer, Pedestal (2008-present); and Inc. (internet-based mortgage trading Director of Enterprise company) (2000-2002); Private consultant Community Investment, (1995-1997), Managing Director, Lehman Inc. (privately-held Brothers (investment banking firm) affordable housing (1992-1995); and Executive, The World finance company) Bank (1979-1992) (1985-2010) ------------------------------------------------------------------------------------------------------------------------------------ Benjamin M. Friedman (71) Trustee since 2013. William Joseph Maier Professor of Trustee, Mellon Trustee Serves until a successor Political Economy, Harvard University Institutional Funds trustee is elected or earlier (1972-present) Investment Trust and retirement or removal. Mellon Institutional Funds Master Portfolio (oversaw 17 portfolios in fund complex) (1989-2008) ------------------------------------------------------------------------------------------------------------------------------------ Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 55 ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Margaret B.W. Graham (68) Trustee since 2013. Founding Director, Vice President and None Trustee Serves until a successor Corporate Secretary, The Winthrop Group, trustee is elected or earlier Inc. (consulting firm) (1982-present); retirement or removal. Desautels Faculty of Management, McGill University (1999-present); and Manager of Research Operations and Organizational Learning, Xerox PARC, Xerox's advance research center (1990-1994) ------------------------------------------------------------------------------------------------------------------------------------ Marguerite A. Piret (67) Trustee since 2013. President and Chief Executive Officer, Director of New America Trustee Serves until a successor Newbury, Piret & Company, Inc. High Income Fund, Inc. trustee is elected or earlier (investment banking firm) (1981-present) (closed-end investment retirement or removal. company) (2004-present); and Member, Board of Governors, Investment Company Institute (2000-2006) ------------------------------------------------------------------------------------------------------------------------------------ Fred J. Ricciardi (68) Trustee since 2014. Consultant (investment company services) None Trustee Serves until a successor (2012-present); Executive Vice President, trustee is elected or earlier BNY Mellon (financial and investment retirement or removal. company services) (1969-2012); Director, BNY International Financing Corp. (financial services) (2002-2012); and Director, Mellon Overseas Investment Corp. (financial services) (2009-2012) ------------------------------------------------------------------------------------------------------------------------------------ 56 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 Interested Trustee ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Kenneth J. Taubes (57)* Trustee since 2014. Director and Executive Vice President None Trustee Serves until a successor (since 2008) and Chief Investment trustee is elected or earlier Officer, U.S. (since 2010) of PIM-USA; retirement or removal. Executive Vice President of Pioneer (since 2008); Executive Vice President of Pioneer Institutional Asset Management, Inc. (since 2009); and Portfolio Manager of Pioneer (since 1999) ------------------------------------------------------------------------------------------------------------------------------------ * Mr. Taubes is an Interested Trustee because he is an officer of the Fund's investment adviser and certain of its affiliates. Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 57 Advisory Trustee ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Lorraine Monchak (59)** Advisory Trustee since 2014. Chief Investment Officer, 1199 SEIU Funds None Advisory Trustee (healthcare workers union pension funds) (2001-present); Vice President-International Investments Group, American International Group, Inc. (insurance company) (1993-2001); Vice President Corporate Finance and Treasury Group, Citibank, N.A.(1980-1986 and 1990- 1993); Vice President-Asset/Liability Management Group, Federal Farm Funding Corporation (government-sponsored issuer of debt securities) (1988-1990); Mortgage Strategies Group, Shearson Lehman Hutton, Inc. (investment bank) (1987-1988); and Mortgage Strategies Group, Drexel Burnham Lambert, Ltd. (investment bank) (1986-1987) ------------------------------------------------------------------------------------------------------------------------------------ ** Ms. Monchak is a non-voting advisory trustee. 58 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 Fund Officers ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Lisa M. Jones (53) Since 2014. Serves at the Chair, Director, CEO and President of None President and discretion of the Board. Pioneer Investment Management-USA (since Chief Executive Officer September 2014); Chair, Director, CEO and President of Pioneer Investment Management, Inc. (since September 2014); Chair, Director, CEO and President of Pioneer Funds Distributor, Inc. (since September 2014); Chair, Director, CEO and President of Pioneer Institutional Asset Management, Inc. (since September 2014); and Chair, Director, and CEO of Pioneer Investment Management Shareholder Services, Inc. (since September 2014); Managing Director, Morgan Stanley Investment Management (2010-2013); and Director of Institutional Business, CEO of International, Eaton Vance Management (2005-2010) ------------------------------------------------------------------------------------------------------------------------------------ Christopher J. Kelley (50) Since 2013. Serves at the Vice President and Associate General None Secretary and Chief discretion of the Board. Counsel of Pioneer since January 2008; Legal Officer Secretary and Chief Legal Officer of all of the Pioneer Funds since June 2010; Assistant Secretary of all of the Pioneer Funds from September 2003 to May 2010; and Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 ------------------------------------------------------------------------------------------------------------------------------------ Carol B. Hannigan (54) Since 2013. Serves at the Fund Governance Director of Pioneer since None Assistant Secretary discretion of the Board. December 2006 and Assistant Secretary of all the Pioneer Funds since June 2010; Manager-Fund Governance of Pioneer from December 2003 to November 2006; and Senior Paralegal of Pioneer from January 2000 to November 2003 ------------------------------------------------------------------------------------------------------------------------------------ Thomas Reyes (52) Since 2013. Serves at the Senior Counsel of Pioneer since May 2013 None Assistant Secretary discretion of the Board. and Assistant Secretary of all the Pioneer Funds since June 2010; and Counsel of Pioneer from June 2007 to May 2013 ------------------------------------------------------------------------------------------------------------------------------------ Mark E. Bradley (55) Since 2013. Serves at the Vice President-Fund Treasury of Pioneer; None Treasurer and Chief discretion of the Board. Treasurer of all of the Pioneer Funds Financial since March 2008; Deputy Treasurer of and Accounting Officer Pioneer from March 2004 to February 2008; and Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008 ------------------------------------------------------------------------------------------------------------------------------------ Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 59 ------------------------------------------------------------------------------------------------------------------------------------ Name, Age and Term of Office and Other Directorships Position Held With the Fund Length of Service Principal Occupation Held by Trustee ------------------------------------------------------------------------------------------------------------------------------------ Luis I. Presutti (50) Since 2013. Serves at the Director-Fund Treasury of Pioneer; and None Assistant Treasurer discretion of the Board. Assistant Treasurer of all of the Pioneer Funds ------------------------------------------------------------------------------------------------------------------------------------ Gary Sullivan (57) Since 2013. Serves at the Fund Accounting Manager-Fund Treasury of None Assistant Treasurer discretion of the Board. Pioneer; and Assistant Treasurer of all of the Pioneer Funds ------------------------------------------------------------------------------------------------------------------------------------ David F. Johnson (35) Since 2013. Serves at the Fund Administration Manager-Fund Treasury None Assistant Treasurer discretion of the Board. of Pioneer since November 2008; Assistant Treasurer of all of the Pioneer Funds since January 2009; and Client Service Manager-Institutional Investor Services at State Street Bank from March 2003 to March 2007 ------------------------------------------------------------------------------------------------------------------------------------ Jean M. Bradley (62) Since 2013. Serves at the Chief Compliance Officer of Pioneer and None Chief Compliance Officer discretion of the Board. of all the Pioneer Funds since March 2010; Chief Compliance Officer of Pioneer Institutional Asset Management, Inc. since January 2012; Chief Compliance Officer of Vanderbilt Capital Advisors, LLC since July 2012: Director of Adviser and Portfolio Compliance at Pioneer since October 2005; and Senior Compliance Officer for Columbia Management Advisers, Inc. from October 2003 to October 2005 ------------------------------------------------------------------------------------------------------------------------------------ Kelly O'Donnell (44) Since 2013. Serves at the Director-Transfer Agency Compliance of None Anti-Money Laundering discretion of the Board. Pioneer and Anti-Money Laundering Officer Officer of all the Pioneer Funds since 2006 ------------------------------------------------------------------------------------------------------------------------------------ 60 Pioneer Long/Short Opportunistic Credit Fund | Annual Report | 8/31/15 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Write to us: -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: us.pioneerinvestments.com This report must be preceded or accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. [LOGO] PIONEER Investments(R) Pioneer Investment Management, Inc. 60 State Street Boston, MA 02109 us.pioneerinvestments.com Securities offered through Pioneer Funds Distributor, Inc. 60 State Street, Boston, MA 02109 Underwriter of Pioneer Mutual Funds, Member SIPC (C) 2015 Pioneer Investments 28081-01-1015 ITEM 2. CODE OF ETHICS. (a) Disclose whether, as of the end of the period covered by the report, the registrant has adopted a code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party. If the registrant has not adopted such a code of ethics, explain why it has not done so. The registrant has adopted, as of the end of the period covered by this report, a code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer and controller. (b) For purposes of this Item, the term "code of ethics" means written standards that are reasonably designed to deter wrongdoing and to promote: (1) Honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships; (2) Full, fair, accurate, timely, and understandable disclosure in reports and documents that a registrant files with, or submits to, the Commission and in other public communications made by the registrant; (3) Compliance with applicable governmental laws, rules, and regulations; (4) The prompt internal reporting of violations of the code to an appropriate person or persons identified in the code; and (5) Accountability for adherence to the code. (c) The registrant must briefly describe the nature of any amendment, during the period covered by the report, to a provision of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item. The registrant must file a copy of any such amendment as an exhibit pursuant to Item 10(a), unless the registrant has elected to satisfy paragraph (f) of this Item by posting its code of ethics on its website pursuant to paragraph (f)(2) of this Item, or by undertaking to provide its code of ethics to any person without charge, upon request, pursuant to paragraph (f)(3) of this Item. The registrant has made no amendments to the code of ethics during the period covered by this report. (d) If the registrant has, during the period covered by the report, granted a waiver, including an implicit waiver, from a provision of the code of ethics to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, that relates to one or more of the items set forth in paragraph (b) of this Item, the registrant must briefly describe the nature of the waiver, the name of the person to whom the waiver was granted, and the date of the waiver. Not applicable. (e) If the registrant intends to satisfy the disclosure requirement under paragraph (c) or (d) of this Item regarding an amendment to, or a waiver from, a provision of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item by posting such information on its Internet website, disclose the registrant's Internet address and such intention. Not applicable. (f) The registrant must: (1) File with the Commission, pursuant to Item 12(a)(1), a copy of its code of ethics that applies to the registrant's principal executive officer,principal financial officer, principal accounting officer or controller, or persons performing similar functions, as an exhibit to its annual report on this Form N-CSR (see attachment); (2) Post the text of such code of ethics on its Internet website and disclose, in its most recent report on this Form N-CSR, its Internet address and the fact that it has posted such code of ethics on its Internet website; or (3) Undertake in its most recent report on this Form N-CSR to provide to any person without charge, upon request, a copy of such code of ethics and explain the manner in which such request may be made. 	See Item 10(2) ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT. (a) (1) Disclose that the registrant's board of trustees has determined that the registrant either: (i) Has at least one audit committee financial expert serving on its audit committee; or (ii) Does not have an audit committee financial expert serving on its audit committee. The registrant's Board of Trustees has determined that the registrant has at least one audit committee financial expert. (2) If the registrant provides the disclosure required by paragraph (a)(1)(i) of this Item, it must disclose the name of the audit committee financial expert and whether that person is "independent." In order to be considered "independent" for purposes of this Item, a member of an audit committee may not, other than in his or her capacity as a member of the audit committee, the board of trustees, or any other board committee: (i) Accept directly or indirectly any consulting, advisory, or other compensatory fee from the issuer; or (ii) Be an "interested person" of the investment company as defined in Section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19)). Ms. Marguerite A. Piret, an independent trustee, is such an audit committee financial expert. (3) If the registrant provides the disclosure required by paragraph (a)(1) (ii) of this Item, it must explain why it does not have an audit committee financial expert. Not applicable. ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES. (a) Disclose, under the caption AUDIT FEES, the aggregate fees billed for each of the last two fiscal years for professional services rendered by the principal accountant for the audit of the registrant's annual financial statements or services that are normally provided by the accountant in connection with statutory and regulatory filings or engagements for those fiscal years. The audit fees for the Trust were $294,263 payable to Deloitte & Touche LLP for the year ended August 31, 2015 and $203,733 for the year ended August 31, 2014. (b) Disclose, under the caption AUDIT-RELATED FEES, the aggregate fees billed in each of the last two fiscal years for assurance and related services by the principal accountant that are reasonably related to the performance of the audit of the registrant's financial statements and are not reported under paragraph (a) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. There were no audit-related services in 2015 or 2014. (c) Disclose, under the caption TAX FEES, the aggregate fees billed in each of the last two fiscal years for professional services rendered by the principal accountant for tax compliance, tax advice, and tax planning. Registrants shall describe the nature of the services comprising the fees disclosed under this category. The tax fees for the Trust were $42,100 payable to Deloitte & Touche LLP for the year ended August 31, 2015 and $42,100 for the year ended August 31, 2014. (d) Disclose, under the caption ALL OTHER FEES, the aggregate fees billed in each of the last two fiscal years for products and services provided by the principal accountant, other than the services reported in paragraphs (a) through (c) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. There were no other fees in 2015 or 2014. (e) (1) Disclose the audit committee's pre-approval policies and procedures described in paragraph (c)(7) of Rule 2-01 of Regulation S-X. PIONEER FUNDS APPROVAL OF AUDIT, AUDIT-RELATED, TAX AND OTHER SERVICES PROVIDED BY THE INDEPENDENT AUDITOR SECTION I - POLICY PURPOSE AND APPLICABILITY The Pioneer Funds recognize the importance of maintaining the independence of their outside auditors. Maintaining independence is a shared responsibility involving Pioneer Investment Management, Inc ("PIM"), the audit committee and the independent auditors. The Funds recognize that a Fund's independent auditors: 1) possess knowledge of the Funds, 2) are able to incorporate certain services into the scope of the audit, thereby avoiding redundant work, cost and disruption of Fund personnel and processes, and 3) have expertise that has value to the Funds. As a result, there are situations where it is desirable to use the Fund's independent auditors for services in addition to the annual audit and where the potential for conflicts of interests are minimal. Consequently, this policy, which is intended to comply with Rule 210.2-01(C)(7), sets forth guidelines and procedures to be followed by the Funds when retaining the independent audit firm to perform audit, audit-related tax and other services under those circumstances, while also maintaining independence. Approval of a service in accordance with this policy for a Fund shall also constitute approval for any other Fund whose pre-approval is required pursuant to Rule 210.2-01(c)(7)(ii). In addition to the procedures set forth in this policy, any non-audit services that may be provided consistently with Rule 210.2-01 may be approved by the Audit Committee itself and any pre-approval that may be waived in accordance with Rule 210.2-01(c)(7)(i)(C) is hereby waived. Selection of a Fund's independent auditors and their compensation shall be determined by the Audit Committee and shall not be subject to this policy. SECTION II - POLICY ---------------- -------------------------------- ------------------------------------------------- SERVICE SERVICE CATEGORY DESCRIPTION SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES CATEGORY ---------------- -------------------------------- ------------------------------------------------- I. AUDIT Services that are directly o Accounting research assistance SERVICES related to performing the o SEC consultation, registration independent audit of the Funds statements, and reporting o Tax accrual related matters o Implementation of new accounting standards o Compliance letters (e.g. rating agency letters) o Regulatory reviews and assistance regarding financial matters o Semi-annual reviews (if requested) o Comfort letters for closed end offerings ---------------- -------------------------------- ------------------------------------------------- II. Services which are not o AICPA attest and agreed-upon procedures AUDIT-RELATED prohibited under Rule o Technology control assessments SERVICES 210.2-01(C)(4) (the "Rule") o Financial reporting control assessments and are related extensions of o Enterprise security architecture the audit services support the assessment audit, or use the knowledge/expertise gained from the audit procedures as a foundation to complete the project. In most cases, if the Audit-Related Services are not performed by the Audit firm, the scope of the Audit Services would likely increase. The Services are typically well-defined and governed by accounting professional standards (AICPA, SEC, etc.) ---------------- -------------------------------- ------------------------------------------------- ------------------------------------- ------------------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------- ------------------------------------ o "One-time" pre-approval o A summary of all such for the audit period for all services and related fees pre-approved specific service reported at each regularly subcategories. Approval of the scheduled Audit Committee independent auditors as meeting. auditors for a Fund shall constitute pre approval for these services. ------------------------------------- ------------------------------------ o "One-time" pre-approval o A summary of all such for the fund fiscal year within services and related fees a specified dollar limit (including comparison to for all pre-approved specified dollar limits) specific service subcategories reported quarterly. o Specific approval is needed to exceed the pre-approved dollar limit for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for Audit-Related Services not denoted as "pre-approved", or to add a specific service subcategory as "pre-approved" ------------------------------------- ------------------------------------ SECTION III - POLICY DETAIL, CONTINUED ----------------------- --------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES DESCRIPTION ----------------------- --------------------------- ----------------------------------------------- III. TAX SERVICES Services which are not o Tax planning and support prohibited by the Rule, o Tax controversy assistance if an officer of the Fund o Tax compliance, tax returns, excise determines that using the tax returns and support Fund's auditor to provide o Tax opinions these services creates significant synergy in the form of efficiency, minimized disruption, or the ability to maintain a desired level of confidentiality. ----------------------- --------------------------- ----------------------------------------------- ------------------------------------- ------------------------- AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------- ------------------------- ------------------------------------- ------------------------- o "One-time" pre-approval o A summary of for the fund fiscal year all such services and within a specified dollar limit related fees 				 (including comparison 			 to specified dollar 			 limits) reported 			 quarterly. o Specific approval is needed to exceed the pre-approved dollar limits for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for tax services not denoted as pre-approved, or to add a specific service subcategory as "pre-approved" ------------------------------------- ------------------------- SECTION III - POLICY DETAIL, CONTINUED ----------------------- --------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES DESCRIPTION ----------------------- --------------------------- ----------------------------------------------- IV. OTHER SERVICES Services which are not o Business Risk Management support prohibited by the Rule, o Other control and regulatory A. SYNERGISTIC, if an officer of the Fund compliance projects UNIQUE QUALIFICATIONS determines that using the Fund's auditor to provide these services creates significant synergy in the form of efficiency, minimized disruption, the ability to maintain a desired level of confidentiality, or where the Fund's auditors posses unique or superior qualifications to provide these services, resulting in superior value and results for the Fund. ----------------------- --------------------------- ----------------------------------------------- --------------------------------------- ------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------- -------------------------- o "One-time" pre-approval o A summary of for the fund fiscal year within all such services and a specified dollar limit related fees 			 (including comparison 			 to specified dollar 				 limits) reported quarterly. o Specific approval is needed to exceed the pre-approved dollar limits for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for "Synergistic" or "Unique Qualifications" Other Services not denoted as pre-approved to the left, or to add a specific service subcategory as "pre-approved" ------------------------------------- -------------------------- SECTION III - POLICY DETAIL, CONTINUED ----------------------- ------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PROHIBITED SERVICE SUBCATEGORIES DESCRIPTION ----------------------- ------------------------- ----------------------------------------------- PROHIBITED SERVICES Services which result 1. Bookkeeping or other services in the auditors losing related to the accounting records or independence status financial statements of the audit under the Rule. client* 2. Financial information systems design and implementation* 3. Appraisal or valuation services, fairness* opinions, or contribution-in-kind reports 4. Actuarial services (i.e., setting actuarial reserves versus actuarial audit work)* 5. Internal audit outsourcing services* 6. Management functions or human resources 7. Broker or dealer, investment advisor, or investment banking services 8. Legal services and expert services unrelated to the audit 9. Any other service that the Public Company Accounting Oversight Board determines, by regulation, is impermissible ----------------------- ------------------------- ----------------------------------------------- ------------------------------------------- ------------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------------- ------------------------------ o These services are not to be o A summary of all performed with the exception of the(*) services and related services that may be permitted fees reported at each if they would not be subject to audit regularly scheduled procedures at the audit client (as Audit Committee meeting defined in rule 2-01(f)(4)) level will serve as continual the firm providing the service. confirmation that has 				 not provided any restricted services. ------------------------------------------- ------------------------------ -------------------------------------------------------------------------------- GENERAL AUDIT COMMITTEE APPROVAL POLICY: o For all projects, the officers of the Funds and the Fund's auditors will each make an assessment to determine that any proposed projects will not impair independence. o Potential services will be classified into the four non-restricted service categories and the "Approval of Audit, Audit-Related, Tax and Other Services" Policy above will be applied. Any services outside the specific pre-approved service subcategories set forth above must be specifically approved by the Audit Committee. o At least quarterly, the Audit Committee shall review a report summarizing the services by service category, including fees, provided by the Audit firm as set forth in the above policy. -------------------------------------------------------------------------------- (2) Disclose the percentage of services described in each of paragraphs (b) through (d) of this Item that were approved by the audit committee pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X. Non-Audit Services Beginning with non-audit service contracts entered into on or after May 6, 2003, the effective date of the new SEC pre-approval rules, the Trust's audit committee is required to pre-approve services to affiliates defined by SEC rules to the extent that the services are determined to have a direct impact on the operations or financial reporting of the Trust. For the years ended August 31 2015 and 2014, there were no services provided to an affiliate that required the Trust's audit committee pre-approval. (f) If greater than 50 percent, disclose the percentage of hours expended on the principal accountants engagement to audit the registrant's financial statements for the most recent fiscal year that were attributed to work performed by persons other than the principal accountant's full-time, permanent employees. N/A (g) Disclose the aggregate non-audit fees billed by the registrants accountant for services rendered to the registrant, and rendered to the registrants investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for each of the last two fiscal years of the registrant. The aggregate non-audit fees for the Trust were $42,100 payable to Deloitte & Touche LLP for the year ended August 31, 2015 and $42,100 for the year ended August 31, 2014. (h) Disclose whether the registrants audit committee of the board of trustees has considered whether the provision of non-audit services that were rendered to the registrants investment adviser (not including any subadviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. The Trust's audit committee of the Board of Trustees has considered whether the provision of non-audit services that were rendered to the Affiliates (as defined) that were not pre- approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS (a) If the registrant is a listed issuer as defined in Rule 10A-3 under the Exchange Act (17 CFR 240.10A-3), state whether or not the registrant has a separately-designated standing audit committee established in accordance with Section 3(a)(58)(A) of the Exchange Act (15 U.S.C. 78c(a)(58)(A)). If the registrant has such a committee, however designated, identify each committee member. If the entire board of directors is acting as the registrant's audit committee as specified in Section 3(a)(58)(B) of the Exchange Act (15 U.S.C. 78c(a)(58)(B)), so state. N/A (b) If applicable, provide the disclosure required by Rule 10A-3(d) under the Exchange Act (17 CFR 240.10A-3(d)) regarding an exemption from the listing standards for audit committees. N/A ITEM 6. SCHEDULE OF INVESTMENTS. File Schedule of Investments in securities of unaffiliated issuers as of the close of the reporting period as set forth in 210.1212 of Regulation S-X [17 CFR 210.12-12], unless the schedule is included as part of the report to shareholders filed under Item 1 of this Form. Included in Item 1 ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES. A closed-end management investment company that is filing an annual report on this Form N-CSR must, unless it invests exclusively in non-voting securities, describe the policies and procedures that it uses to determine how to vote proxies relating to portfolio securities, including the procedures that the company uses when a vote presents a conflict between the interests of its shareholders, on the one hand, and those of the company's investment adviser; principal underwriter; or any affiliated person (as defined in Section 2(a)(3) of the Investment Company Act of 1940 (15 U.S.C. 80a-2(a)(3)) and the rules thereunder) of the company, its investment adviser, or its principal underwriter, on the other. Include any policies and procedures of the company's investment adviser, or any other third party, that the company uses, or that are used on the company's behalf, to determine how to vote proxies relating to portfolio securities. Not applicable to open-end management investment companies. ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES. (a) If the registrant is a closed-end management investment company that is filing an annual report on this Form N-CSR,provide the following information: (1) State the name, title, and length of service of the person or persons employed by or associated with the registrant or an investment adviser of the registrant who are primarily responsible for the day-to-day management of the registrant's portfolio ("Portfolio Manager"). Also state each Portfolio Manager's business experience during the past 5 years. Not applicable to open-end management investment companies. ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS. (a) If the registrant is a closed-end management investment company, in the following tabular format, provide the information specified in paragraph (b) of this Item with respect to any purchase made by or on behalf of the registrant or any affiliated purchaser, as defined in Rule 10b-18(a)(3) under the Exchange Act (17 CFR 240.10b-18(a)(3)), of shares or other units of any class of the registrant's equity securities that is registered by the registrant pursuant to Section 12 of the Exchange Act (15 U.S.C. 781). Not applicable to open-end management investment companies. ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS. Describe any material changes to the procedures by which shareholders may recommend nominees to the registrant's board of directors, where those changes were implemented after the registrant last provided disclosure in response to the requirements of Item 407(c)(2)(iv) of Regulation S-R(17 CFR 229.407)(as required by Item 22(b)(15)) of Schedule 14A (17 CFR 240.14a-101), or this Item. There have been no material changes to the procedures by which the shareholders may recommend nominees to the registrant's board of directors since the registrant last provided disclosure in response to the requirements of Item 407(c)(2)(iv) of Regulation S-R of Schedule 14(A) in its definitive proxy statement, or this item. ITEM 11. CONTROLS AND PROCEDURES. (a) Disclose the conclusions of the registrant's principal executive and principal financials officers, or persons performing similar functions, regarding the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Act (17 CFR 270.30a-3(c))) as of a date within 90 days of the filing date of the report that includes the disclosure required by this paragraph, based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the Act (17 CFR 270.30(a)-3(b) and Rules 13a-15(b) or 15d-15(b) under the Exchange Act (17 CFR 240.13a-15(b) or 240.15d-15(b)). The registrant's principal executive officer and principal financial officer have concluded that the registrant's disclosure controls and procedures are effective based on the evaluation of these controls and procedures as of a date within 90 days of the filing date of this report. (b) Disclose any change in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the Act (17CFR 270.30a-3(d)) that occured during the second fiscal quarter of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. There were no significant changes in the registrant's internal control over financial reporting that occurred during the second fiscal quarter of the period covered by this report that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting. The registrant's principal executive officer and principal financial officer, however, voluntarily are reporting the following information: In August of 2006 the registrant's investment adviser enhanced its internal procedures for reporting performance information required to be included in prospectuses. Those enhancements involved additional internal controls over the appropriateness of performance data generated for this purpose. Such enhancements were made following an internal review which identified prospectuses relating to certain classes of shares of a limited number of registrants where, inadvertently, performance information not reflecting the deduction of applicable sales charges was included. Those prospectuses were revised, and the revised prospectuses were distributed to shareholders. ITEM 12. EXHIBITS. (a) File the exhibits listed below as part of this Form. Letter or number the exhibits in the sequence indicated. (1) Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit. (2) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Act (17 CFR 270.30a-2(a)) , exactly as set forth below: Filed herewith. SIGNATURES [See General Instruction F] Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (Registrant) Pioneer Series Trust V By (Signature and Title)* /s/ Lisa M. Jones Lisa M. Jones, President & Chief Executive Officer Date October 30, 2015 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By (Signature and Title)* /s/ Lisa M. Jones Lisa M. Jones, President & Chief Executive Officer Date October 30, 2015 By (Signature and Title)* /s/ Mark Bradley Mark Bradley, Treasurer & Chief Accounting & Financial Officer Date October 30, 2015 * Print the name and title of each signing officer under his or her signature.