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 811-10395 Pioneer Series Trust VII (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: October 31 Date of reporting period: November 1, 2016 through April 30, 2017 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 Global High Yield Fund -------------------------------------------------------------------------------- Semiannual Report | April 30, 2017 -------------------------------------------------------------------------------- Ticker Symbols: Class A PGHYX Class C PGYCX Class Y GHYYX [LOGO] PIONEER Investments(R) visit us: us.pioneerinvestments.com Table of Contents President's Letter 2 Portfolio Management Discussion 4 Portfolio Summary 9 Prices and Distributions 10 Performance Update 11 Comparing Ongoing Fund Expenses 14 Schedule of Investments 16 Financial Statements 45 Notes to Financial Statements 52 Approval of New and Interim Management Agreements 70 Trustees, Officers and Service Providers 79 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 1 President's Letter After an overall strong year for leading market indices in 2016, U.S. markets continued to generate positive returns over the first calendar quarter of 2017, with so-called "risk" assets, such as equities and credit-sensitive bonds, posting solid gains. In the first quarter, U.S. equities, as measured by the Standard & Poor's 500 Index, returned slightly more than 6%, while high-yield securities dominated bond market performance. The transfer of power in Washington, D.C. in January had little or no effect on the markets in the first quarter, as the post-election momentum we witnessed late in the fourth quarter of 2016 slowed only when oil prices slumped in March, due to both higher-than-expected inventories and concerns over whether OPEC (Organization of Petroleum Exporting Countries) would continue its supply cuts in June. Not even the Federal Reserve System's (the Fed's) highly anticipated rate hike during the month of March, its second in three months, nor Britain's trigger of Article 50 to begin the "Brexit" process caused any dramatic sell-off of risk assets. While U.S. gross domestic product (GDP) did slow in the first quarter, the expectation is for GDP to accelerate in the second quarter, with a strong consumer leading the way. Pioneer believes the U.S. economy may lead all developed nations in 2017, with GDP growth in excess of 2% for the year. President Trump has proposed decidedly pro-business policies, such as lower taxes, higher infrastructure spending, and less regulation, though we believe the economy may realize the benefits of those policies, if enacted, more so in 2018 than in 2017. Conversely, the effects of the President's potentially restrictive trade policies could offset some of the benefits of the pro-growth fiscal policies. Even so, we believe solid domestic employment figures should continue to support consumption and the housing market, and that stronger corporate profits and increased government spending may contribute to economic growth in 2018 and beyond. Increasing global Purchasing Manager Indices (PMIs) suggest that growth in global economies is also improving. (PMIs are used to measure the economic health of the manufacturing sector.) There are, as always, some risks to our outlook. First, the market already has priced in a good deal of the Trump economic reform platform, and that could lead to near-term disappointment if Congressional follow-through does not happen this year. The future of the Affordable Care Act is another potential concern. The first attempt to repeal/replace it failed, but any new proposed 2 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 legislation will undoubtedly have an effect on the health care sector, one of the largest segments of the U.S. economy. Geopolitical risks, of course, remain a potential headwind, given ongoing strife in the Middle East and renewed tensions on the Korean Peninsula. While our current outlook is generally optimistic, conditions can and often do change, and while passive investment strategies may have a place in one's overall portfolio, it is our view that all investment decisions are active choices. Throughout Pioneer's history, we have believed in the importance of active management. The active decisions to invest in equities or fixed-income securities are made by a team of experienced investment professionals focusing on identifying value across global markets using proprietary research, careful risk management, and a long-term perspective. 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. 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 the trust you have placed in us 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. April 30, 2017 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. Past performance is no guarantee of future results. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 3 Portfolio Management Discussion | 4/30/17 High-yield bonds generated healthy, positive returns during the six-month period ended April 30, 2017, as investors maintained confidence in a steadily growing global economy. In the following interview, Andrew Feltus discusses the market environment and the performance of Pioneer Global High Yield Fund during the six-month period. Mr. Feltus, Director of High Yield and Bank Loans, a senior vice president and a portfolio manager at Pioneer, co-manages the Fund with Tracy Wright, a senior vice president and a portfolio manager at Pioneer. Q How did the Fund perform during the six-month period ended April 30, 2017? A Pioneer Global High Yield Fund's Class A shares returned 5.35% at net asset value during the six-month period ended April 30, 2017, while the Fund's benchmarks, the Bloomberg Barclays Global High Yield Index (the Bloomberg Barclays Index) and the Bank of America Merrill Lynch (BofA ML) U.S. High Yield Index, returned 5.10% and 5.50%, respectively. During the same period, the average return of the 691 mutual funds in Lipper's High Yield Funds category was 4.80%, and the average return of the 714 mutual funds in Morningstar's High Yield Bond Funds category was 4.88%. Q What were the main factors that affected the Fund's benchmark-relative performance during the six-month period ended April 30, 2017? A During the period, our emphasis on holding domestic corporate bonds in the portfolio as well as successful security selection in all high-yield markets helped the Fund perform essentially in line with its high-yield benchmark indices, while outpacing its competitive fund averages. The Fund's overweight position in U.S. high-yield corporate bonds provided a strong assist to benchmark-relative returns, as the asset class performed well over the six-month period. In addition, the Fund's underweight of European high-yield securities, which did not fare as well as U.S. high yield, contributed positively to benchmark-relative performance. In the emerging markets, we emphasized corporate bonds in the portfolio, which produced solid results for the Fund, while de-emphasizing sovereign debt, which underperformed. However, the Fund's exposures to out-of-benchmark groups such as insurance-linked securities, floating-rate bank loans, and asset-backed securities were a drag on benchmark-relative performance over the six months. The Fund's currency positions did not have a significant impact on benchmark -relative results during the period. Portfolio overweights to the U.S. dollar and the Russian ruble helped relative returns, while exposure to 4 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 the Mexican peso and an underweight to the British pound tended to hold back benchmark-relative results. At the end of the period, on April 30, 2017, 87% of the Fund's total investment portfolio was invested in U.S.-dollar denominated holdings. Q Which specific investments had noteworthy effects on the Fund's benchmark- relative performance during the six-month period ended April 30, 2017? A The Fund experienced good security selection results in all asset classes during the period. In the United States, the portfolio's investment in bonds of Scientific Games International, a producer of gaming equipment (including slot machines), was a standout performer, while investments in bonds of domestic energy companies also provided a major boost to the Fund's benchmark-relative performance. One energy holding in the portfolio that underperformed, however, was Talen Energy, a utility whose results suffered due to weak pricing in the Mid-Atlantic and Midwestern states. Among the Fund's emerging markets corporate holdings, a major contributor to benchmark-relative returns was the debt of China Fish Group, a company that had defaulted on its debt in 2015. During the past six months, however, the bonds rallied as the company reorganized. On the down side, the Fund's relative underweighting of the debt of Petrobras, the large Brazilian-based energy corporation, detracted from benchmark-relative performance when the bonds turned in solid results. In Europe, the Fund benefited from strong security selection results among its corporate debt holdings, especially in the banking sector, where performance was led by the portfolio's exposure to bonds of Italian banking firm Intesa. We favored the debt of European banks during the period because we believe those banks are making great strides in improving their capital structures, just as U.S. banks did following the 2008 financial crisis. One European-based investment in the portfolio that underperformed during the period was a position in Agrokor, a Croatian retailing and food company. Agrokor had difficulties refinancing its debt, but, fortunately, we liquidated the Fund's position before the company filed for bankruptcy. Q What factors affected the Fund's dividend* distributions to shareholders during the six months ended April 30, 2017? A The Fund's dividend distribution fell during the period, as current income generated by the portfolio's investments declined. Two factors were responsible for the decrease. First, as high-yield bond prices rallied, their * Dividends are not guaranteed. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 5 effective yields fell and spreads tightened (credit spreads are commonly defined as the differences in yield between Treasuries and other types of fixed-income securities with similar maturities). Second, during the aforementioned rally, we sold some of the Fund's high-yield holdings to take profits and upgrade the overall credit quality of the portfolio in an effort to reduce risk. The higher-quality, newer holdings in the portfolio typically feature lower yields than the bonds that we sold, and therefore generate less income. Q Did you invest the Fund in any derivative securities during the six-month period ended April 30, 2017? If so, did the investments have any material impact on the Fund's benchmark-relative results? A We did invest the Fund in two types of derivatives during the six months: forward foreign currency transactions (currency forwards) and credit default swaps. Each of the investments had minor, positive effects on the Fund's relative performance. We invested in the currency forwards in an attempt to manage the risk of holding investments in the portfolio denominated in foreign currencies. We invested in credit default swaps because they are liquid (easily tradable) investments that gave the Fund exposure to the high-yield bond market. Q What is your investment outlook? A The economic fundamentals underlying high-yield investments appear to be strong and improving. We anticipate that both the domestic and global economies will continue to expand, thus adding to corporate profitability and enabling companies to improve their earnings as well as strengthen their balance sheets. We believe those conditions should increase the probability that corporate bond defaults will further decline. We think there is good potential for U.S. economic growth to accelerate in the coming months, especially if President Trump should secure Congressional approval of his economic agenda, which includes reductions in both personal and corporate income tax rates as well as a boost in infrastructure spending. On the international front, we think Japan's economy should continue to improve, and we anticipate that growth trends in China and Europe should remain steady. An improving global economic outlook characterized by healthy corporate profits and low bond default rates also bodes well for the emerging markets. 6 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 However, as high-yield investments have outperformed other fixed-income securities, credit spreads have tightened. We believe high-yield bonds are fairly valued at the present time, but there may be less potential for price appreciation given the recent market rallies. As a consequence, we have become more cautious and started to reduce the overall credit risk of the portfolio's bond holdings. Please refer to the Schedule of Investments on pages 16-44 for a full listing of Fund securities. All investments are subject to risk, including the possible loss of principal. In the past several years, financial markets have experienced increased volatility, depressed valuations, decreased liquidity and heightened uncertainty. These conditions may continue, recur, worsen or spread. 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. Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, and economic and political conditions. Prepayment risk is the chance that an issuer may exercise its right to repay 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 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. 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. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 7 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. 8 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 Portfolio Summary | 4/30/17 Portfolio Diversification* -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] U.S. Corporate Bonds 44.3% International Corporate Bonds 38.6% Foreign Government Bonds 7.2% Senior Secured Loans 3.0% Convertible Corporate Bonds 2.2% Collateralized Mortgage Obligations 1.2% U.S. Government Securities 1.0% Warrants 0.9% Convertible Preferred Stocks 0.5% International Common Stocks 0.3% U.S. Preferred Stocks 0.3% U.S. Common Stocks 0.2% Temporary Cash Investment 0.2% International Preferred Stocks 0.1% Asset Backed Security 0.0%+ Municipal Bond 0.0%+ + amount rounds to less than 0.1%. * Includes investments in insurance linked securities totaling 2.5% of total investment portfolio. Geographical Distribution -------------------------------------------------------------------------------- (As a percentage of long-term holdings based on country of domicile) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] United States 52.6% Luxembourg 6.6% United Kingdom 4.6% Netherlands 4.1% Mexico 3.1% Argentina 2.8% Canada 2.4% France 2.3% Bermuda 2.0% Ireland 1.9% Turkey 1.7% Peru 1.4% Cayman Islands 1.2% Italy 1.1% Other (individually less than 1%) 12.2% 10 Largest Holdings -------------------------------------------------------------------------------- (As a percentage of total long-term holdings)** 1. Scientific Games International, Inc., 10.0%, 12/1/22 1.12% -------------------------------------------------------------------------------- 2. Minerva Luxembourg SA, 7.75%, 1/31/23 (144A) 1.11 -------------------------------------------------------------------------------- 3. Frontier Communications Corp., 8.75%, 4/15/22 0.95 -------------------------------------------------------------------------------- 4. Pesquera Exalmar SAA, 7.375%, 1/31/20 (144A) 0.90 -------------------------------------------------------------------------------- 5. Petrobras Global Finance BV, 5.375%, 1/27/21 0.86 -------------------------------------------------------------------------------- 6. Sprint Corp., 7.25%, 9/15/21 0.83 -------------------------------------------------------------------------------- 7. MTN Mauritius Investment, Ltd., 5.373%, 2/13/22 (144A) 0.79 -------------------------------------------------------------------------------- 8. Nationstar Mortgage LLC, 6.5%, 6/1/22 0.79 -------------------------------------------------------------------------------- 9. U.S. Treasury Bills, 5/18/17 0.77 -------------------------------------------------------------------------------- 10. Endo Finance LLC, 5.375%, 1/15/23 (144A) 0.73 -------------------------------------------------------------------------------- ** 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. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 9 Prices and Distributions | 4/30/17 Net Asset Value per Share -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Class 4/30/17 10/31/16 -------------------------------------------------------------------------------- A $8.93 $8.71 -------------------------------------------------------------------------------- C $8.90 $8.69 -------------------------------------------------------------------------------- Y $8.77 $8.55 -------------------------------------------------------------------------------- Distributions per Share: 11/1/16-4/30/17 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Short-Term Long-Term Tax Return Class Dividends Capital Gains Capital Gains of Capital -------------------------------------------------------------------------------- A $0.2390 $ -- $ -- $ -- -------------------------------------------------------------------------------- C $0.2082 $ -- $ -- $ -- -------------------------------------------------------------------------------- Y $0.2465 $ -- $ -- $ -- -------------------------------------------------------------------------------- Index Definitions -------------------------------------------------------------------------------- The Bloomberg Barclays Global High Yield Index is an unmanaged index that provides a broad-based measure of the global high-yield fixed-income markets. The index represents the union of the Barclays U.S. High-Yield, Barclays Pan-European High-Yield, Barclays U.S. Emerging Markets High-Yield, and Barclays Pan-European Emerging Markets High-Yield Indices. The BofA ML U.S. High Yield Index is an unmanaged, commonly accepted measure of the performance of high-yield securities. 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 indices defined here pertain to the "Value of $10,000 Investment" and "Value of $5 Million Investment" charts appearing on pages 11-13. 10 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 Performance Update | 4/30/17 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 High Yield Fund at public offering price during the periods shown, compared to that of the Bank of America (BofA) Merrill Lynch (ML) U.S. High Yield Index and the Bloomberg Barclays Global High Yield Index. Average Annual Total Returns (As of April 30, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays BofA Net Public Global ML U.S. Asset Offering High High Value Price Yield Yield Period (NAV) (POP) Index Index -------------------------------------------------------------------------------- 10 years 4.54% 4.07% 7.44% 7.32% 5 years 4.31 3.35 6.72 6.87 1 year 12.01 6.94 11.37 13.66 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2017) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 1.19% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global BofA ML U.S. Bloomberg Barclays High Yield Fund High Yield Index Global High Yield Index 4/07 $ 9,550 $10,000 $10,000 4/08 $ 9,265 $ 9,917 $10,044 4/09 $ 6,563 $ 8,460 $ 8,497 4/10 $10,617 $12,200 $12,319 4/11 $12,238 $13,828 $14,173 4/12 $12,066 $14,540 $14,803 4/13 $13,626 $16,582 $17,004 4/14 $14,165 $17,626 $18,265 4/15 $13,906 $18,078 $18,117 4/16 $13,300 $17,837 $18,401 4/17 $14,897 $20,273 $20,494 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 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. Please refer to the financial highlights for a more current expense ratio. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 11 Performance Update | 4/30/17 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 High Yield Fund during the periods shown, compared to that of the Bank of America (BofA) Merrill Lynch (ML) U.S. High Yield Index and the Bloomberg Barclays Global High Yield Index. Average Annual Total Returns (As of April 30, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays BofA Global ML U.S. High High If If Yield Yield Period Held Redeemed Index Index -------------------------------------------------------------------------------- 10 years 5.15% 5.15% 7.44% 7.32% 5 years 5.45 5.45 6.72 6.87 1 year 5.15 5.15 11.37 13.66 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2017) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 1.90% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global BofA ML U.S. Bloomberg Barclays High Yield Fund High Yield Index Global High Yield Index 4/07 $10,000 $10,000 $10,000 4/08 $ 9,628 $ 9,917 $10,044 4/09 $ 6,762 $ 8,460 $ 8,497 4/10 $10,871 $12,200 $12,319 4/11 $12,447 $13,828 $14,173 4/12 $12,209 $14,540 $14,803 4/13 $13,685 $16,582 $17,004 4/14 $14,126 $17,626 $18,265 4/15 $13,781 $18,078 $18,117 4/16 $13,071 $17,837 $18,401 4/17 $14,558 $20,273 $20,494 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. Please refer to the financial highlights for a more current expense ratio. 12 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 Performance Update | 4/30/17 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 High Yield Fund during the periods shown, compared to that of the Bank of America (BofA) Merrill Lynch (ML) U.S. High Yield Index and the Bloomberg Barclays Global High Yield Index. Average Annual Total Returns (As of April 30, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays BofA Net Global ML U.S. Asset High High Value Yield Yield Period (NAV) Index Index -------------------------------------------------------------------------------- 10 years 4.87% 7.44% 7.32% 5 years 4.60 6.72 6.87 1 year 12.43 11.37 13.66 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2017) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 0.90% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Global BofA ML U.S. Bloomberg Barclays High Yield Fund High Yield Index Global High Yield Index 4/07 $5,000,000 $ 5,000,000 $ 5,000,000 4/08 $4,878,365 $ 4,958,617 $ 5,021,894 4/09 $3,473,092 $ 4,230,222 $ 4,248,345 4/10 $5,626,437 $ 6,100,147 $ 6,159,254 4/11 $6,493,983 $ 6,914,207 $ 7,086,312 4/12 $6,427,665 $ 7,270,206 $ 7,401,312 4/13 $7,280,335 $ 8,290,919 $ 8,502,207 4/14 $7,594,227 $ 8,812,927 $ 9,132,290 4/15 $7,475,030 $ 9,039,084 $ 9,058,541 4/16 $7,158,187 $ 8,918,292 $ 9,200,607 4/17 $8,047,703 $10,136,411 $10,247,096 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. Please refer to the financial highlights for a more current expense ratio. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 13 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 Global High Yield Fund Based on actual returns from November 1, 2016, through April 30, 2017. -------------------------------------------------------------------------------- Share Class A C Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 Value on 11/1/16 -------------------------------------------------------------------------------- Ending Account Value (after expenses) $1,053.50 $1,051.50 $1,055.40 on 4/30/17 -------------------------------------------------------------------------------- Expenses Paid During Period* $ 6.11 $ 9.66 $ 4.64 -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized net expense ratio of 1.20%, 1.90%, and 0.91% for Class A, Class C and Class Y shares, respectively, multiplied by the average account value over the period, multiplied by 181/365 (to reflect the one-half year period). 14 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 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 Global High Yield Fund Based on a hypothetical 5% return per year before expenses, reflecting the period from November 1, 2016, through April 30, 2017. -------------------------------------------------------------------------------- Share Class A C Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 Value on 11/1/16 -------------------------------------------------------------------------------- Ending Account Value (after expenses) $1,018.84 $1,015.37 $1,020.28 on 4/30/17 -------------------------------------------------------------------------------- Expenses Paid During Period* $ 6.01 $ 9.49 $ 4.56 -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized net expense ratio of 1.20%, 1.90%, and 0.91% for Class A, Class C and Class Y shares, respectively, multiplied by the average account value over the period, multiplied by 181/365 (to reflect the one-half year period). Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 15 Schedule of Investments | 4/30/17 (unaudited) -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- CONVERTIBLE CORPORATE BONDS -- 2.2% ENERGY -- 0.5% Oil & Gas Exploration & Production -- 0.3% 1,785,000 Whiting Petroleum Corp., 1.25%, 4/1/20 $ 1,577,494 -------------------------------------------------------------------------------------------------------- Oil & Gas Storage & Transportation -- 0.2% 1,375,000 Golar LNG, Ltd., 2.75%, 2/15/22 (144A) $ 1,340,625 --------------- Total Energy $ 2,918,119 -------------------------------------------------------------------------------------------------------- MATERIALS -- 0.5% Construction Materials -- 0.5% 2,775,000 Cemex SAB de CV, 3.72%, 3/15/20 $ 3,130,547 -------------------------------------------------------------------------------------------------------- Steel -- 0.0%+ EUR 276,548 New World Resources NV, 4.0%, 10/7/20 (144A) (4.0% cash, 8.0% PIK) (PIK) $ 30 --------------- Total Materials $ 3,130,577 -------------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 0.2% Electrical Components & Equipment -- 0.2% 1,250,000 General Cable Corp., 4.5%, 11/15/29 (Step) $ 978,906 --------------- Total Capital Goods $ 978,906 -------------------------------------------------------------------------------------------------------- MEDIA -- 0.3% Cable & Satellite -- 0.3% 2,148,000 2.375 Dish Network Corp., 2.375%, 3/15/24 (144A) $ 2,235,262 --------------- Total Media $ 2,235,262 -------------------------------------------------------------------------------------------------------- PHARMACEUTICALS, BIOTECHNOLOGY & LIFE SCIENCES -- 0.0%+ Pharmaceuticals -- 0.0%+ 300,000 Jazz Investments I, Ltd., 1.875%, 8/15/21 $ 332,250 --------------- Total Pharmaceuticals, Biotechnology & Life Sciences $ 332,250 -------------------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 0.7% Internet Software & Services -- 0.5% 1,765,000 WebMD Health Corp., 1.5%, 12/1/20 $ 2,131,238 790,000 WebMD Health Corp., 2.625%, 6/15/23 (144A) 760,869 --------------- $ 2,892,107 -------------------------------------------------------------------------------------------------------- Application Software -- 0.2% 1,258,000 Citrix Systems, Inc., 0.5%, 4/15/19 1,540,264 --------------- Total Software & Services $ 4,432,371 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 16 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 0.0%+ Semiconductors -- 0.0%+ 2,393,896 LDK Solar Co, Ltd., 5.535%, 12/31/18, (5.535% cash, 5.535% PIK) (PIK) (d) $ 3,112 --------------- Total Semiconductors & Semiconductor Equipment $ 3,112 -------------------------------------------------------------------------------------------------------- TOTAL CONVERTIBLE CORPORATE BONDS (Cost $15,085,261) $ 14,030,597 -------------------------------------------------------------------------------------------------------- PREFERRED STOCKS -- 0.5% TRANSPORTATION -- 0.1% Air Freight & Logistics -- 0.1% 3,428 CEVA Group Plc, 12/31/14 (c) $ 771,338 --------------- Total Transportation $ 771,338 -------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.4% Consumer Finance -- 0.4% 96,924 6.82 GMAC Capital Trust I, Floating Rate Note, 2/15/40 $ 2,467,685 --------------- Total Diversified Financials $ 2,467,685 -------------------------------------------------------------------------------------------------------- TOTAL PREFERRED STOCKS (Cost $5,735,375) $ 3,239,023 -------------------------------------------------------------------------------------------------------- CONVERTIBLE PREFERRED STOCK -- 0.5% BANKS -- 0.5% Diversified Banks -- 0.5% 2,650 Bank of America Corp., 7.25% (Perpetual) $ 3,215,563 -------------------------------------------------------------------------------------------------------- TOTAL CONVERTIBLE PREFERRED STOCK (Cost $3,204,960) $ 3,215,563 -------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------- Shares -------------------------------------------------------------------------------------------------------- COMMON STOCKS -- 0.6% ENERGY -- 0.3% Oil & Gas Exploration & Production -- 0.3% 5,735,146 Ascent CNR Corp. Class A $ 745,569 1,046 Midstates Petroleum Co, Inc. 19,414 39,631 Pacific Exploration and Production Corp. 1,167,930 203 Swift Energy Co. 4,892 --------------- $ 1,937,805 -------------------------------------------------------------------------------------------------------- Coal & Consumable Fuels -- 0.0%+ 34 Contura Energy, Inc. $ 2,329 --------------- Total Energy $ 1,940,134 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 17 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Shares Value -------------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 0.0%+ Construction & Engineering -- 0.0%+ 530,321 Abengoa SA $ 17,913 5,483,653 Abengoa SA 83,650 --------------- $ 101,563 -------------------------------------------------------------------------------------------------------- Industrial Machinery -- 0.0%+ 156,027 Liberty Tire Recycling LLC (e) $ 1,560 --------------- Total Capital Goods $ 103,123 -------------------------------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES -- 0.0%+ Diversified Support Services -- 0.0%+ 63 IAP Worldwide Services, Inc. $ 84,949 --------------- Total Commercial Services & Supplies $ 84,949 -------------------------------------------------------------------------------------------------------- TRANSPORTATION -- 0.1% Air Freight & Logistics -- 0.1% 1,584 CEVA Group Plc* $ 316,730 --------------- Total Transportation $ 316,730 -------------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.1% Automobile Manufacturers -- 0.1% 53,820 Ford Motor Co. $ 617,315 --------------- Total Automobiles & Components $ 617,315 -------------------------------------------------------------------------------------------------------- CONSUMER DURABLES & APPAREL -- 0.0%+ Homebuilding -- 0.0%+ 1,443,476 Desarrolladora Homex SAB de CV* $ 139,418 --------------- Total Consumer Durables & Apparel $ 139,418 -------------------------------------------------------------------------------------------------------- CONSUMER SERVICES -- 0.0%+ Education Services -- 0.0%+ 11,492 Cengage Learning Holdings II, Inc. $ 120,666 --------------- Total Consumer Services $ 120,666 -------------------------------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 0.1% Distillers & Vintners -- 0.1% 43,811 Marie Brizard Wine & Spirits SA* $ 660,195 --------------- Total Food, Beverage & Tobacco $ 660,195 -------------------------------------------------------------------------------------------------------- TOTAL COMMON STOCKS (Cost $15,823,346) $ 3,982,530 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 18 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- ASSET BACKED SECURITY -- 0.1% BANKS -- 0.1% Thrifts & Mortgage Finance -- 0.1% 450,000 InSite Issuer LLC Class C Series 16-1A, 7.5%, 11/15/46 $ 460,288 -------------------------------------------------------------------------------------------------------- TOTAL ASSET BACKED SECURITY (Cost $450,000) $ 460,288 -------------------------------------------------------------------------------------------------------- COLLATERALIZED MORTGAGE OBLIGATIONS -- 1.2% BANKS -- 1.2% Thrifts & Mortgage Finance -- 1.2% 630,000 1.41 BAMLL Commercial Mortgage Securities Series 2016-Fr14 Class C, Floating Rate Note, 2/27/48 (144A) $ 531,366 1,500,000 6.10 Banc of America Commercial Mortgage Trust 2007-4, Floating Rate Note, 2/10/51 (144A) 1,482,482 1,500,000 3.21 Citigroup Commercial Mortgage Trust 2014-GC23 REMICS, Floating Rate Note, 7/12/47 (144A) 979,643 1,480,000 5.99 COBALT CMBS Commercial Mortgage Trust 2007-C3, Floating Rate Note, 5/15/46 1,479,684 455,000 5.99 COBALT CMBS Commercial Mortgage Trust 2007-C3, Floating Rate Note, 5/15/46 322,971 600,000 5.98 COMM 2007-C9 Mortgage Trust, Floating Rate Note, 12/10/49 (144A) 595,033 750,000 4.99 COMM 2014-FL5 Mortgage Trust REMICS, Floating Rate Note, 10/15/31 (144A) 693,569 917,448 5.74 EQTY 2014-MZ Mezzanine Trust, Floating Rate Note, 5/10/19 (144A) 920,255 416,597 Homeowner Assistance Program Reverse Mortgage Loan Trust 2013-RM1, 4.0%, 5/26/53 (144A) 414,514 500,000 4.10 JPMBB Commercial Mortgage Securities Trust 2014-C25 REMICS, Floating Rate Note, 11/18/47 (144A) 392,834 --------------- $ 7,812,351 --------------- Total Banks $ 7,812,351 -------------------------------------------------------------------------------------------------------- TOTAL COLLATERALIZED MORTGAGE OBLIGATIONS (Cost $7,789,785) $ 7,812,351 -------------------------------------------------------------------------------------------------------- CORPORATE BONDS -- 81.0% ENERGY -- 13.8% Oil & Gas Drilling -- 0.5% 2,306,000 Rowan Companies, Inc., 5.4%, 12/1/42 $ 1,741,030 417,000 Rowan Companies, Inc., 5.85%, 1/15/44 327,345 870,000 Trinidad Drilling, Ltd., 6.625%, 2/15/25 (144A) 2,068,375 --------------- $ 2,944,900 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 19 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Oil & Gas Equipment & Services -- 0.6% 1,000,000 Archrock Partners LP, 6.0%, 10/1/22 $ 997,500 1,117,000 Archrock Partners LP, 6.0%, 4/1/21 1,119,792 1,180,000 Borets Finance DAC, 6.5%, 4/7/22 (144A) 1,221,300 630,000 Weatherford Bermuda, Ltd., 8.25%, 6/15/23 682,762 --------------- $ 4,021,354 -------------------------------------------------------------------------------------------------------- Integrated Oil & Gas -- 2.1% 445,000 Ascent Resources/Aru Finance, 10.0%, 4/1/22 (144A) $ 460,019 5,165,000 Petrobras Global Finance BV, 5.375%, 1/27/21 5,306,263 1,256,000 Petrobras Global Finance BV, 6.25%, 3/17/24 1,299,332 2,400,000 Petrobras Global Finance BV, 7.375%, 1/17/27 2,580,720 600,000 Petroleos Mexicanos, 5.375%, 3/13/22 (144A) 630,750 MXN 8,650,000 Petroleos Mexicanos, 7.19%, 9/12/24 (144A) 404,647 700,000 4.77 Petroleos Mexicanos, Floating Rate Note, 3/11/22 (144A) 760,305 1,435,000 YPF SA, 8.5%, 3/23/21 (144A) 1,623,344 --------------- $ 13,065,380 -------------------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 7.0% 2,260,000 Antero Resources Corp., 5.0%, 3/1/25 (144A) $ 2,231,750 725,000 California Resources Corp., 8.0%, 12/15/22 (144A) 554,625 1,245,000 Carrizo Oil & Gas, Inc., 6.25%, 4/15/23 1,254,338 650,000 Chesapeake Energy Corp., 8.0%, 1/15/25 (144A) 642,688 600,000 Chesapeake Energy Corp., 8.0%, 12/15/22 (144A) 632,250 2,226,000 Cobalt International Energy, Inc., 10.75%, 12/1/21 (144A) 2,198,175 818,000 Cobalt International Energy, Inc., 7.75%, 12/1/23 (144A) 503,070 2,385,000 Continental Resources, Inc., 3.8%, 6/1/24 2,241,900 2,480,000 Denbury Resources, Inc., 5.5%, 5/1/22 1,847,600 2,095,000 GeoPark Latin America, Ltd. Agencia en Chile, 7.5%, 2/11/20 (144A) 2,105,475 1,380,000 Great Western Petroleum LLC, 9.0%, 9/30/21 (144A) 1,428,300 1,055,000 Gulfport Energy Corp., 6.0%, 10/15/24 1,039,175 2,000,000 Gulfport Energy Corp., 6.375%, 5/15/25 (144A) 1,992,500 1,634,000 Halcon Resources Corp., 12.0%, 2/15/22 (144A) 1,901,568 875,000 Halcon Resources Corp., 6.75%, 2/15/25 (144A) 840,000 2,390,000 Hilcorp Energy I LP, 5.0%, 12/1/24 (144A) 2,240,625 1,000,000 KazMunayGas National Co JSC, 4.4%, 4/30/23 (144A) 1,010,000 575,000 MEG Energy Corp., 6.5%, 1/15/25 (144A) 567,812 The accompanying notes are an integral part of these financial statements. 20 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production (continued) 1,860,000 MEG Energy Corp., 7.0%, 3/31/24 (144A) $ 1,660,050 880,000 Newfield Exploration Co., 5.375%, 1/1/26 922,900 425,000 Newfield Exploration Co., 5.625%, 7/1/24 449,174 1,455,000 Novatek OAO via Novatek Finance DAC, 4.422%, 12/13/22 (144A) 1,487,839 2,790,000 Oasis Petroleum, Inc., 6.875%, 3/15/22 2,824,875 320,000 Parsley Energy LLC, 5.25%, 8/15/25 (144A) 322,400 1,460,000 Parsley Energy LLC, 5.375%, 1/15/25 (144A) 1,474,600 250,000 Parsley Energy LLC, 6.25%, 6/1/24 (144A) 264,375 1,520,000 PDC Energy, Inc., 7.75%, 10/15/22 1,596,000 340,000 QEP Resources, Inc., 5.25%, 5/1/23 332,350 1,560,000 Rice Energy Inc., 6.25%, 5/1/22 1,631,183 2,727,000 Sanchez Energy Corp., 6.125%, 1/15/23 2,508,813 945,000 SM Energy Co., 6.75%, 9/15/26 952,088 200,000 SM Energy Company, 6.125%, 11/15/22 203,500 575,000 Whiting Petroleum Corp., 5.0%, 3/15/19 580,750 1,500,000 WPX Energy, Inc., 6.0%, 1/15/22 1,522,500 --------------- $ 43,965,248 -------------------------------------------------------------------------------------------------------- Oil & Gas Refining & Marketing -- 0.6% 1,790,000 Calumet Specialty Products Partners LP, 6.5%, 4/15/21 $ 1,512,550 448,000 EnLink Midstream Partners LP, 5.05%, 4/1/45 424,133 1,299,000 EnLink Midstream Partners LP, 5.6%, 4/1/44 1,321,838 415,000 PBF Holding Co LLC, 7.0%, 11/15/23 421,225 --------------- $ 3,679,746 -------------------------------------------------------------------------------------------------------- Oil & Gas Storage & Transportation -- 3.0% 1,085,000 Energy Transfer Equity LP, 5.875%, 1/15/24 $ 1,169,088 1,090,000 Genesis Energy LP, 5.75%, 2/15/21 1,102,262 2,645,000 Global Partners LP, 7.0%, 6/15/23 2,618,550 1,000,000 7.29 Golar LNG Partners LP, Floating Rate Note, 5/15/21 1,002,514 985,000 Holly Energy Partners LP, 6.0%, 8/1/24 (144A) 1,041,638 1,480,000 MPLX LP, 4.875%, 6/1/25 1,574,158 2,625,000 ONEOK, Inc., 7.5%, 9/1/23 3,105,157 500,000 Sabine Pass Liquefaction LLC, 5.0%, 3/15/27 (144A) 527,710 710,000 Sabine Pass Liquefaction LLC, 5.875%, 6/30/26 (144A) 791,734 2,150,000 Targa Resources Partners LP, 4.25%, 11/15/23 2,128,500 1,375,000 The Williams Companies, Inc., 4.55%, 6/24/24 1,407,656 2,635,000 The Williams Companies, Inc., 5.75%, 6/24/44 2,727,225 --------------- $ 19,196,192 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 21 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Coal & Consumable Fuels -- 0.0%+ 315,000 Alpha Natural Resources, Inc., 6.0%, 6/1/19 (d) $ 3,780 --------------- Total Energy $ 86,876,600 -------------------------------------------------------------------------------------------------------- MATERIALS -- 7.7% Commodity Chemicals -- 0.3% 1,000,000 Hexion, Inc., 6.625%, 4/15/20 $ 945,000 755,000 Tronox Finance LLC, 7.5%, 3/15/22 (144A) 788,975 --------------- $ 1,733,975 -------------------------------------------------------------------------------------------------------- Diversified Chemicals -- 1.7% EUR 2,015,000 Axalta Coating Systems LLC, 4.25%, 8/15/24 (144A) $ 2,345,739 460,000 Blue Cube Spinco, Inc., 9.75%, 10/15/23 556,600 3,365,000 CF Industries, Inc., 3.45%, 6/1/23 3,137,862 EUR 1,138,000 Ineos Finance Plc, 4.0%, 5/1/23 (144A) 1,287,765 EUR 880,000 Inovyn Finance Plc, 6.25%, 5/15/21 (144A) 1,006,790 2,550,000 Koks Oao (Koks Finance DAC, 7.5%, 5/4/22 (144A) 2,561,985 --------------- $ 10,896,741 -------------------------------------------------------------------------------------------------------- Fertilizers & Agricultural Chemicals -- 0.1% 725,000 CVR Partners LP, 9.25%, 6/15/23 (144A) $ 740,406 -------------------------------------------------------------------------------------------------------- Construction Materials -- 0.2% EUR 1,200,000 Cemex SAB de CV, 4.75%, 1/11/22 (144A) $ 1,361,194 -------------------------------------------------------------------------------------------------------- Metal & Glass Containers -- 0.9% EUR 700,000 ARD Finance SA, 6.625%, 9/15/23 (144A) (PIK) $ 792,275 700,000 ARD Finance SA, 7.125%, 9/15/23 (144A) (PIK) 726,250 475,000 Ardagh Group, 3.876%, 5/15/21 485,094 590,000 Ardagh Packaging Finance Plc, 4.625%, 5/15/23 (144A) 602,538 EUR 410,000 Ardagh Packaging Finance Plc, 6.75%, 5/15/24 (144A) 490,787 630,000 Ardagh Packaging Finance Plc, 7.25%, 5/15/24 (144A) 685,912 EUR 725,000 Horizon Holdings I SAS, 7.25%, 8/1/23 (144A) 843,813 EUR 950,000 Verallia Packaging SASU, 5.125%, 8/1/22 (144A) 1,101,972 --------------- $ 5,728,641 -------------------------------------------------------------------------------------------------------- Aluminum -- 0.6% 680,000 Constellium NV, 7.875%, 4/1/21 (144A) $ 733,652 3,025,000 Rusal Capital DAC, 5.125%, 2/2/22 (144A) 3,033,216 --------------- $ 3,766,868 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 22 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Diversified Metals & Mining -- 2.36 810,000 Ausdrill Finance Pty, Ltd., 6.875%, 11/1/19 (144A) $ 834,300 1,655,000 First Quantum Minerals, Ltd., 7.25%, 4/1/23 (144A) 1,684,997 757,000 FMG Resources August 2006 Pty, Ltd., 9.75%, 3/1/22 (144A) 871,023 1,150,000 Freeport-McMoRan, Inc., 3.55%, 3/1/22 1,081,000 1,100,000 MMC Norilsk Nickel OJSC via MMC Finance DAC, 5.55%, 10/28/20 (144A) 1,178,650 860,000 Prince Mineral Holding Corp., 11.5%, 12/15/19 (144A) 885,800 1,218,000 Rain CII Carbon LLC/CII, 7.25%, 4/1/25 (144A) 1,221,045 560,000 Vale Overseas, Ltd., 6.25%, 8/10/26 611,968 1,150,000 Vedanta Resources Plc, 6.375%, 7/30/22 (144A) 1,165,525 1,000,000 Vedanta Resources Plc, 7.125%, 5/31/23 1,045,000 3,645,000 Vedanta Resources Plc, 8.25%, 6/7/21 (144A) 3,964,666 2,130,000 VM Holding SA, 5/4/27, 5/4/27 (144A) 2,109,722 --------------- $ 16,653,696 -------------------------------------------------------------------------------------------------------- Steel -- 0.8% 715,000 ArcelorMittal, 6.125%, 6/1/25 $ 802,444 2,066,000 BlueScope Steel Finance, Ltd., 6.5%, 5/15/21 (144A) 2,189,960 EUR 135,483 0.00 New World Resources NV, Floating Rate Note, 10/7/20 (e) -- EUR 101,612 0.00 New World Resources NV, Floating Rate Note, 10/7/20 (e) -- 1,960,000 Samarco Mineracao SA, 4.125%, 11/1/22 (144A) (d) 1,254,400 910,000 Samarco Mineracao SA, 5.75%, 10/24/23 (144A) (d) 582,400 --------------- $ 4,829,204 -------------------------------------------------------------------------------------------------------- Forest Products -- 0.4% 2,655,000 Eldorado Intl. Finance GmbH, 8.625%, 6/16/21 (144A) $ 2,297,902 -------------------------------------------------------------------------------------------------------- Paper Products -- 0.1% 573,000 Resolute Forest Products, Inc., 5.875%, 5/15/23 $ 545,782 --------------- Total Materials $ 48,554,409 -------------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 3.3% Aerospace & Defense -- 0.6% EUR 3,615,000 TA MFG., Ltd., 3.625%, 4/15/23 $ 4,034,856 135,000 Triumph Group, Inc., 5.25%, 6/1/22 131,625 --------------- $ 4,166,481 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 23 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Construction & Engineering -- 0.4% 1,475,000 Amsted Industries, Inc., 5.375%, 9/15/24 (144A) $ 1,515,562 965,000 Covey Park Energy LLC/FI, 7.5%, 5/15/25 (144A) 965,000 --------------- $ 2,480,562 -------------------------------------------------------------------------------------------------------- Electrical Components & Equipment -- 0.5% 920,000 Exterran NRG Solutions, Ltd., 8.125%, 5/1/25 (144A) $ 949,325 2,000,000 General Cable Corp., 5.75%, 10/1/22 1,980,000 --------------- $ 2,929,325 -------------------------------------------------------------------------------------------------------- Industrial Conglomerates -- 0.6% 2,980,000 JB Poindexter & Co., Inc., 9.0%, 4/1/22 (144A) $ 3,121,550 485,000 Park-Ohio Industries, Inc., 6.625%, 4/15/27 (144A) 497,125 --------------- $ 3,618,675 -------------------------------------------------------------------------------------------------------- Construction & Farm Machinery & Heavy Trucks -- 0.2% EUR 735,000 4.25 Loxam SAS, 4.25%, 4/15/24 (144A) $ 827,518 EUR 705,000 6.00 Loxam SAS, 6.0%, 4/15/24 (144A) 804,249 --------------- $ 1,631,767 -------------------------------------------------------------------------------------------------------- Industrial Machinery -- 0.7% 1,810,000 Apex Tool Group LLC, 7.0%, 2/1/21 (144A) $ 1,674,250 EUR 2,365,000 Colfax Corp., 3.25%, 5/15/25 (144A) 2,602,673 --------------- $ 4,276,923 -------------------------------------------------------------------------------------------------------- Trading Companies & Distributors -- 0.3% 1,690,000 WESCO Distribution, Inc., 5.375%, 12/15/21 $ 1,736,475 --------------- Total Capital Goods $ 20,840,208 -------------------------------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES -- 0.2% Environmental & Facilities Services -- 0.1% 745,000 Clean Harbors, Inc., 5.125%, 6/1/21 $ 762,999 -------------------------------------------------------------------------------------------------------- Diversified Support Services -- 0.1% 400,000 Broadspectrum, Ltd., 8.375%, 5/15/20 (144A) $ 417,400 --------------- Total Commercial Services & Supplies $ 1,180,399 -------------------------------------------------------------------------------------------------------- TRANSPORTATION -- 2.2% Airlines -- 0.6% 1,204,982 Guanay Finance, Ltd., 6.0%, 12/15/20 (144A) $ 1,229,082 1,585,000 Latam Finance, Ltd., 6.875%, 4/11/24 (144A) 1,610,360 1,100,000 TAM Capital 3, Inc., 8.375%, 6/3/21 (144A) 1,139,875 --------------- $ 3,979,317 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 24 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Marine -- 0.6% 2,100,000 Far East Capital, Ltd. SA, 8.0%, 5/2/18 (d) $ 1,386,000 2,225,000 Navios South American Logistics, Inc., 7.25%, 5/1/22 (144A) 2,197,188 --------------- $ 3,583,188 -------------------------------------------------------------------------------------------------------- Railroads -- 0.2% EUR 1,325,000 Russian Railways via RZD Capital Plc, 3.3744%, 5/20/21 $ 1,534,492 -------------------------------------------------------------------------------------------------------- Trucking -- 0.0%+ 2,952,182 Inversiones Alsacia SA, 8.0%, 12/31/18 (144A) (d) $ 147,609 -------------------------------------------------------------------------------------------------------- Airport Services -- 0.2% 370,000 Aeropuertos Argentina 2000 SA, 6.875%, 2/1/27 (144A) $ 390,535 525,000 Aeropuertos Dominicanos Siglo XXI SA, 6.75%, 3/30/29 (144A) 562,212 --------------- $ 952,747 -------------------------------------------------------------------------------------------------------- Highways & Railtracks -- 0.6% MXN 37,000,000 Red de Carreteras de Occidente SAPIB de CV, 9.0%, 6/10/28 (144A) $ 1,887,404 1,820,000 Rumo Luxembourg Sarl, 7.375%, 2/9/24 (144A) 1,896,440 --------------- $ 3,783,844 --------------- Total Transportation $ 13,981,197 -------------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 1.1% Auto Parts & Equipment -- 1.1% 2,035,000 Dana Financing Luxembourg Sarl, 6.5%, 6/1/26 (144A) $ 2,131,662 EUR 1,350,000 IHO Verwaltungs GmbH, 3.75%, 9/15/26 (144A) (PIK) 1,526,768 EUR 1,000,000 Nemak Sab De CV, 3.25%, 5/15/24 (144A) 1,104,854 1,877,000 TI Group Automotive Systems LLC, 8.75%, 7/15/23 (144A) 2,008,390 --------------- $ 6,771,674 --------------- Total Automobiles & Components $ 6,771,674 -------------------------------------------------------------------------------------------------------- CONSUMER DURABLES & APPAREL -- 1.4% Homebuilding -- 1.4% 2,237,897 Abengoa Abenewco Two, 0.25%, 3/31/23 (144A) $ 300,997 690,000 Beazer Homes U.S.A., 6.75%, 3/15/25 (144A) 705,525 460,000 Beazer Homes U.S.A., 8.75%, 3/15/22 511,750 1,345,000 KB Home, 7.0%, 12/15/21 1,503,038 2,079,000 Lennar Corp., 4.75%, 11/15/22 2,162,160 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 25 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Homebuilding (continued) 2,200,000 Rialto Holdings LLC, 7.0%, 12/1/18 (144A) $ 2,233,000 1,625,000 Taylor Morrison Communities, Inc., 5.875%, 4/15/23 (144A) 1,730,625 --------------- $ 9,147,095 --------------- Total Consumer Durables & Apparel $ 9,147,095 -------------------------------------------------------------------------------------------------------- CONSUMER SERVICES -- 3.6% Casinos & Gaming -- 2.0% EUR 1,870,000 Codere Finance 2 Luxembourg SA, 6.75%, 11/1/21 (144A) $ 2,068,115 605,000 Codere Finance 2 Luxembourg SA, 7.625%, 11/1/21 (144A) 589,028 EUR 2,225,000 Intralot Capital Luxembourg SA, 6.75%, 9/15/21 (144A) 2,555,275 88,554 Mashantucket Western Pequot Tribe, 6.5%, 7/1/36 (1.0% cash, 5.50% PIK) (PIK) (d) 1,080 6,376,000 Scientific Games International, Inc., 10.0%, 12/1/22 6,917,961 625,000 Scientific Games International, Inc., 6.25%, 9/1/20 601,562 --------------- $ 12,733,021 -------------------------------------------------------------------------------------------------------- Hotels, Resorts & Cruise Lines -- 0.7% 1,504,000 Sabre GLBL, Inc., 5.375%, 4/15/23 (144A) $ 1,564,160 2,960,000 Viking Cruises, Ltd., 8.5%, 10/15/22 (144A) 3,093,200 --------------- $ 4,657,360 -------------------------------------------------------------------------------------------------------- Specialized Consumer Services -- 0.9% EUR 3,585,000 Boing Group Financing Plc, 6.625%, 7/15/19 (144A) $ 3,952,270 1,480,000 Constellis Holdings LLC, 9.75%, 5/15/20 (144A) 1,592,184 --------------- $ 5,544,454 --------------- Total Consumer Services $ 22,934,835 -------------------------------------------------------------------------------------------------------- MEDIA -- 3.6% Advertising -- 0.2% 1,125,000 MDC Partners, Inc., 6.5%, 5/1/24 (144A) $ 1,096,875 -------------------------------------------------------------------------------------------------------- Broadcasting -- 1.3% 1,900,000 CCO Holdings LLC/Capital Corp., 5.125%, 5/1/27 (144A) $ 1,938,000 1,650,000 Gray Television, Inc., 5.125%, 10/15/24 (144A) 1,654,125 1,970,000 Gray Television, Inc., 5.875%, 7/15/26 (144A) 2,038,950 1,600,000 Sinclair Television Group, Inc., 5.125%, 2/15/27 (144A) 1,588,000 EUR 1,240,000 United Group BV, 7.875%, 11/15/20 (144A) 1,406,134 --------------- $ 8,625,209 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 26 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Cable & Satellite -- 1.4% 320,000 Altice Financing SA, 6.625%, 2/15/23 (144A) $ 338,800 1,615,000 CCO Holdings LLC, 5.75%, 2/15/26 (144A) 1,715,421 1,075,000 CSC Holdings LLC, 5.5%, 4/15/27 (144A) 1,111,281 2,140,000 DISH DBS Corp., 5.875%, 7/15/22 2,266,881 283,000 Intelsat Connect Finance SA, 12.5%, 4/1/22 (144A) 249,040 595,000 Videotron, Ltd., 5.125%, 4/15/27 (144A) 606,722 EUR 2,300,000 Ziggo Secured Finance BV, 4.25%, 1/15/27 (144A) 2,646,937 --------------- $ 8,935,082 -------------------------------------------------------------------------------------------------------- Movies & Entertainment -- 0.7% GBP 1,070,000 AMC Entertainment Holdings, Ltd., 6.375%, 11/15/24 (144A) $ 1,476,080 1,575,000 Netflix Inc., 4.375% 11/15/26 1,551,375 EUR 1,125,000 WMG Acquisition Corp., 4.125%, 11/1/24 (144A) 1,287,458 --------------- $ 4,314,913 --------------- Total Media $ 22,972,079 -------------------------------------------------------------------------------------------------------- RETAILING -- 0.8% Distributors -- 0.2% 1,250,000 LKQ Corp., 4.75%, 5/15/23 $ 1,256,250 -------------------------------------------------------------------------------------------------------- Department Stores -- 0.6% 2,050,000 Grupo Kaltex SA de CV, 8.875%, 4/11/22 (144A) $ 2,035,650 2,285,000 PetSmart, Inc., 7.125%, 3/15/23 (144A) 2,087,919 --------------- $ 4,123,569 --------------- Total Retailing $ 5,379,819 -------------------------------------------------------------------------------------------------------- FOOD & STAPLES RETAILING -- 0.2% Food Retail -- 0.2% 1,535,000 C&S Group Enterprises LLC, 5.375%, 7/15/22 (144A) $ 1,515,812 --------------- Total Food & Staples Retailing $ 1,515,812 -------------------------------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 6.9% Agricultural Products -- 0.1% 1,625,000 Tonon Luxembourg SA, 10.5%, 5/14/24 (144A) (d) $ 731,250 -------------------------------------------------------------------------------------------------------- Packaged Foods & Meats -- 6.3% GBP 1,170,000 Boparan Finance Plc, 5.5%, 7/15/21 (144A) $ 1,515,150 4,050,000 CFG Investment SAC, 9.75%, 7/30/19 (144A) (d) 3,503,250 EUR 1,353,000 Darling Global Finance BV, 4.75%, 5/30/22 (144A) 1,554,751 775,000 FAGE International SA, 5.625%, 8/15/26 (144A) 788,562 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 27 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Packaged Foods & Meats (continued) 3,135,000 JBS USA LUX SA, 5.75%, 6/15/25 (144A) $ 3,236,888 525,000 Lamb Weston Holdings, Inc., 4.625%, 11/1/24 (144A) 542,062 525,000 Lamb Weston Holdings, Inc., 4.875%, 11/1/26 (144A) 541,406 1,335,000 Marb Bondco Plc, 7.0%, 3/15/24 (144A) 1,349,952 3,015,000 Marfrig Holdings Europe BV, 6.875%, 6/24/19 (144A) 3,130,927 3,923,000 Marfrig Holdings Europe BV, 8.0%, 6/8/23 (144A) 4,163,245 1,425,000 MHP SA, 8.25%, 4/2/20 (144A) 1,482,000 2,210,000 Minerva Luxembourg SA, 6.5%, 9/20/26 (144A) 2,193,403 6,530,000 Minerva Luxembourg SA, 7.75%, 1/31/23 (144A) 6,864,662 6,500,000 Pesquera Exalmar SAA, 7.375%, 1/31/20 (144A) 5,557,500 255,000 Post Holdings, Inc., 5.5%, 3/1/25 (144A) 266,475 2,630,000 Post Holdings, Inc., 6.0%, 12/15/22 (144A) 2,807,525 --------------- $ 39,497,758 -------------------------------------------------------------------------------------------------------- Tobacco -- 0.5% 535,000 Alliance One International Inc., 8.5%, 4/15/21 $ 555,062 2,750,000 Alliance One International, Inc., 9.875%, 7/15/21 2,374,625 --------------- $ 2,929,687 --------------- Total Food, Beverage & Tobacco $ 43,158,695 -------------------------------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 3.4% Health Care Services -- 0.3% 1,430,000 Team Health Holdings, Inc., 6.375%, 2/1/25 (144A) $ 1,396,038 820,000 Universal Hospital Services, Inc., 7.625%, 8/15/20 831,275 --------------- $ 2,227,313 -------------------------------------------------------------------------------------------------------- Health Care Facilities -- 1.3% 3,915,000 CHS, 6.875%, 2/1/22 $ 3,239,662 2,400,000 Kindred Healthcare Inc., 6.375%, 4/15/22 2,319,000 1,320,000 Kindred Healthcare, Inc., 8.0%, 1/15/20 1,362,900 1,175,000 RegionalCare Hospital Partners Holdings, Inc., 8.25%, 5/1/23 (144A) 1,250,053 --------------- $ 8,171,615 -------------------------------------------------------------------------------------------------------- Managed Health Care -- 1.4% 245,000 Centene Corp., 4.75%, 1/15/25 $ 248,981 1,840,000 Centene Corp., 4.75%, 5/15/22 1,909,000 1,550,000 Centene Corp., 5.625%, 2/15/21 1,629,438 1,500,000 Molina Healthcare, Inc., 5.375%, 11/15/22 1,567,500 3,155,000 Wellcare Health Plans, 5.25%, 4/1/25 3,281,200 --------------- $ 8,636,119 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 28 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Health Care Technology -- 0.4% EUR 2,200,000 Quintiles IMS, Inc., 3.25%, 3/15/25 (144A) $ 2,406,536 --------------- Total Health Care Equipment & Services $ 21,441,583 -------------------------------------------------------------------------------------------------------- PHARMACEUTICALS, BIOTECHNOLOGY & LIFE SCIENCES -- 2.1% Pharmaceuticals -- 2.1% 1,165,000 DPx Holdings BV, 7.5%, 2/1/22 (144A) $ 1,233,444 5,256,000 Endo Finance LLC, 5.375%, 1/15/23 (144A) 4,507,020 225,000 Horizon Pharma Inc., 8.75% 11/1/24 234,281 750,000 Horizon Pharma, Inc., 6.625%, 5/1/23 741,562 EUR 3,475,000 Valeant Pharmaceuticals International, Inc., 4.5%, 5/15/23 2,660,827 EUR 1,540,000 Valeant Pharmaceuticals International, Inc., 4.5%, 5/15/23 (144A) 1,179,186 1,640,000 Valeant Pharmaceuticals International, Inc., 5.875%, 5/15/23 (144A) 1,211,550 565,000 Valeant Pharmaceuticals International, Inc., 6.5%, 5/15/22 (144A) 578,419 755,000 Valeant Pharmaceuticals International, Inc., 7.0%, 5/15/24 (144A) 770,100 --------------- $ 13,116,389 --------------- Total Pharmaceuticals, Biotechnology & Life Sciences $ 13,116,389 -------------------------------------------------------------------------------------------------------- BANKS -- 8.4% Diversified Banks -- 7.8% 800,000 Access Bank Plc, 10.5%, 10/19/21 (144A) $ 849,488 1,885,000 9.25 Access Bank Plc, Floating Rate Note, 6/24/21 (144A) 1,833,540 835,000 7.20 Akbank Tas, Floating Rate Note, 3/16/27 (144A) 881,469 INR 134,290,000 Asian Development Bank, 6.2%, 10/6/26 2,067,767 INR 108,160,000 Asian Development Bank, 6.45%, 8/8/21 1,695,896 1,050,000 8.25 Banco de Galicia y Buenos Aires SA, Floating Rate Note, 7/19/26 (144A) 1,148,102 925,000 9.00 Banco do Brasil SA, Floating Rate Note (Perpetual) 974,950 1,765,000 6.50 Banco Gnb Sudameris SA, Floating Rate Note, 4/3/27 (144A) 1,820,950 295,000 3.80 Banco Nacional de Comercio Exterior SNC Cayman Islands, Floating Rate Note, 8/11/26 (144A) 289,838 2,000,000 Banco Nacional de Costa Rica, 6.25%, 11/1/23 (144A) 2,083,000 2,680,000 Banque Ouest Africaine de Developpement, 5.5%, 5/6/21 (144A) 2,847,929 1,400,000 BBVA Bancomer SA Texas, 6.75%, 9/30/22 (144A) 1,583,120 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 29 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Diversified Banks (continued) 3,625,000 7.62 BNP Paribas SA, Floating Rate Note, (Perpetual) (144A) $ 3,937,838 1,900,000 5.90 Citigroup, Inc., Floating Rate Note, (Perpetual) 1,995,000 854,000 6.25 Citigroup, Inc., Floating Rate Note, (Perpetual) 929,792 460,000 7.88 Credit Agricole SA, Floating Rate Note, (Perpetual) (144A) 492,117 2,525,000 8.12 Credit Agricole SA, Floating Rate Note, (Perpetual) (144A) 2,786,640 1,685,000 6.50 ING Groep NV, Floating Rate Note, 12/29/49 1,729,231 INR 42,350,000 Inter-American Development Bank, 6.0%, 9/5/17 657,650 INR 31,450,000 International Bank for Reconstruction & Development, 5.75%, 10/28/19 486,848 4,300,000 7.70 Intesa Sanpaolo S.p.A., Floating Rate Note, 12/29/49 (Perpetual) (144A) 4,240,875 EUR 970,000 6.38 Lloyds Banking Group Plc, Floating Rate Note, (Perpetual) 1,126,985 1,773,000 8.00 Royal Bank of Scotland Group Plc, Floating Rate Note, (Perpetual) 1,839,488 1,570,000 8.62 Royal Bank of Scotland Group Plc, Floating Rate Note, (Perpetual) 1,694,815 750,000 Sberbank of Russia Via SB Capital SA, 5.25%, 5/23/23 (144A) 774,375 1,640,000 7.38 Societe Generale SA, Floating Rate Note, (Perpetual) (144A) 1,734,300 650,000 Turkiye Is Bankasi A.S. 6.125%, 4/25/24 (144A) 660,036 1,840,000 Turkiye Is Bankasi, 5.375%, 10/6/21 (144A) 1,851,390 1,500,000 Turkiye Is Bankasi, 5.5%, 4/21/22 (144A) 1,504,500 1,259,000 8.00 Turkiye Vakiflar Bankasi TAO, Floating Rate Note, 11/1/27 (144A) 1,308,668 775,000 VTB Bank OJSC Via VTB Capital SA, 6.95%, 10/17/22 (144A) 844,750 --------------- $ 48,671,347 -------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- 0.6% 2,700,000 Alfa Bank AO Via Alfa Bond Issuance Plc, 7.5%, 9/26/19 (144A) $ 2,943,000 925,000 Vnesheconombank Via VEB Finance Plc, 6.902%, 7/9/20 (144A) 1,015,117 --------------- $ 3,958,117 --------------- Total Banks $ 52,629,464 -------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 3.9% Specialized Finance -- 1.5% 3,000,000 Cantor Fitzgerald LP, 7.875%, 10/15/19 (144A) $ 3,283,911 4,870,000 Nationstar Mortgage LLC, 6.5%, 6/1/22 4,894,350 The accompanying notes are an integral part of these financial statements. 30 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Specialized Finance (continued) 1,185,000 Nationstar Mortgage LLC, 6.5%, 7/1/21 $ 1,202,775 --------------- $ 9,381,036 -------------------------------------------------------------------------------------------------------- Consumer Finance -- 1.5% 150,000 Ally Financial, Inc., 4.625%, 5/19/22 $ 153,000 3,478,000 Ally Financial, Inc., 5.75%, 11/20/25 3,560,602 1,925,000 Credito Real SAB de CV SOFOM ER, 7.25%, 7/20/23 (144A) 2,009,219 INR 240,670,000 International Finance Corp., 8.25%, 6/10/21 4,000,812 --------------- $ 9,723,633 -------------------------------------------------------------------------------------------------------- Asset Management & Custody Banks -- 0.5% 2,800,000 JBS Investment Management, Ltd., 7.25%, 4/3/24 $ 2,929,500 -------------------------------------------------------------------------------------------------------- Investment Banking & Brokerage -- 0.4% 2,028,000 UBS AG, 7.625%, 8/17/22 $ 2,367,690 --------------- Total Diversified Financials $ 24,401,859 -------------------------------------------------------------------------------------------------------- INSURANCE -- 2.7% Life & Health Insurance -- 0.2% GBP 954,047 TIG FINCO Plc, 8.75%, 4/2/20 $ 1,200,769 GBP 168,361 8.50 TIG FINCO Plc, Floating Rate Note, 3/2/20 (144A) 222,824 --------------- $ 1,423,593 -------------------------------------------------------------------------------------------------------- Reinsurance -- 2.5% 450,000 6.13 Alamo Re, Ltd., Floating Rate Note, 6/7/18 (Cat Bond) (144A) $ 462,825 1,300,000 Arlington Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 8/31/16 (f)(g) 63,180 800,000 Berwick 2016-1 Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 2/1/18 (f)(g) 38,000 1,000,000 Berwick Segregated Account (Artex SAC Ltd.), Variable Rate Note, 1/22/16 (f)(g) 30,000 500,000 0.00 Caelus Re, Ltd., Floating Rate Note, 6/5/20 (Cat Bond) 500,000 2,600,000 Carnoustie 2016-N,Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 11/30/20 (f)(g) 281,320 800,000 Carnoustie 2017 Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 11/30/21 (f)(g) 810,160 3,900,000 Carnoustie Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 2/19/16 (f)(g) 79,560 600,000 Cypress 2017 Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 7/10/17 (f)(g) 533,880 600,000 Eden Re II, Ltd., Variable Rate Notes, 3/22/21 (f)(g) 615,900 2,646 Eden Re II, Ltd., Variable Rate Notes, 4/23/19 (f)(g) (144A) 57,114 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 31 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Reinsurance (continued) 300,000 7.34 Galilei Re, Ltd., Floating Rate Note, 1/8/20 (Cat Bond) (144A) $ 299,430 250,000 8.98 Galilei Re, Ltd., Floating Rate Note, 1/8/20 (Cat Bond) (144A) 247,575 300,000 6.34 Galilei Re, Ltd., Floating Rate Note, 1/8/20 (Cat Bond) (144A) 299,940 300,000 7.26 Galilei Re, Ltd., Floating Rate Note, 1/8/21 (Cat Bond) (144A) 299,940 1,600,000 Gleneagles Segregated Account (Artex SAC Ltd), Variable Rate Notes, 11/30/20 (f)(g) 269,120 800,000 Gullane 2017 Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 11/30/21 (f)(g) 813,680 3,500,000 Gullane Segregated Account (Artex SAC Ltd.), Variable Rate Note 11/30/20 (f)(g) 146,650 EUR 250,000 12.00 Horse Capital I DAC, Floating Rate Note, 6/15/20 (Cat Bond) (144A) 273,953 500,000 0.00 Kilimanjaro II Series A-1, Ltd., Floating Rate Note, 4/20/21 (Cat Bond) (144A) 502,400 350,000 Kingsbarns Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 5/15/17 (f)(g) 349,860 250,000 Limestone Re, Ltd., Floating Rate Note, 8/31/21 (f)(g) 251,775 250,000 Limestone Re, Ltd., Floating Rate Note, 8/31/21 (f)(g) 251,775 2,400,000 Lorenz Re, Ltd., Variable Rate Notes, 3/31/18 (f)(g) 13,920 1,100,000 Lorenz Re, Ltd., Variable Rate Notes, 3/31/19 (f)(g) 61,600 450,000 Lorenz Re, Ltd., Variable Rate Notes, 3/31/20 (f)(g) 452,700 490,000 Madison Re, Variable Rate Notes, 3/31/19 (f)(g) 544,341 3,900,000 Pangaea Re, Series 2015-1, Principal at Risk Notes, 2/1/19 (f)(g) 17,550 1,000,000 Pangaea Re, Series 2016-2, Principal at Risk Notes, 11/30/20 (f)(g) 1,152,200 3,500,000 Pangaea Re., Variable Rate Notes, 2/1/20 (f)(g) 486,500 300,000 Pinehurst Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 1/16/18 (f)(g) 288,390 1,300,000 Prestwick Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 7/1/16 (f)(g) 37,960 250,000 0.00 Residential Reinsurance 2016, Ltd., Floating Rate Note, 12/6/20 (Cat Bond) (144A) 235,350 500,000 5.03 Residential Reinsurance 2016, Ltd., Floating Rate Note, 12/6/23 (Cat Bond) (144A) 498,050 400,000 Resilience Re, Ltd., Variable Rate Notes, 1/9/19 (f)(g) 400,000 400,000 Resilience Re, Ltd., Variable Rate Notes, 4/7/18 (f)(g) (144A) 362,240 AUD 300,000 RW0009 (Artex SAC Ltd.), Variable Rate Notes, 7/10/17 (f)(g) 198,233 The accompanying notes are an integral part of these financial statements. 32 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Reinsurance (continued) 5,450 Sector Re V, Ltd., Variable Rate Notes, 12/1/20 (144A) (f)(g) $ 66,385 2,600,000 St. Andrews Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 1/22/16 (f)(g) 51,220 1,750,000 St. Andrews Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 2/1/18 (f)(g) 246,050 500,000 St. Andrews Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 2/1/19 (f)(g) 509,500 600,000 St. Andrews Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 6/1/19 (f)(g) 600,480 500,000 Sunningdale 2017 Segregated Account (Artex SAC Ltd.), Variable Rate Notes, 7/10/17 (f)(g) 462,550 JPY 98,019,477 Tralee Segregated Account (Artex SAC Ltd.), Variable Rate Note 7/15/17 (f)(g) 876,095 3,000,000 Versutus 2016, Class A-1, Variable Rate Notes, 11/30/20 (f)(g) 122,400 600,000 Versutus 2017, Class A-1, Variable Rate Notes, 11/30/21 (f)(g) 614,220 --------------- $ 15,775,971 --------------- Total Insurance $ 17,199,564 -------------------------------------------------------------------------------------------------------- REAL ESTATE -- 1.4% Specialized REIT -- 0.4% 2,314,110 AAF Holdings LLC, 12.0%, 7/1/19 (144A) (12.0% cash, 0.0% PIK) (PIK) $ 2,424,030 -------------------------------------------------------------------------------------------------------- Diversified REIT -- 0.4% EUR 1,960,000 MPT Operation Partnersp/Financial, 3.325%, 3/24/25 $ 2,178,627 -------------------------------------------------------------------------------------------------------- Specialized REIT -- 0.6% 2,870,000 Communications Sales & Leasing, Inc., 6.0%, 4/15/23 (144A) $ 2,986,608 919,000 Equinix, Inc., 5.375%, 4/1/23 956,909 --------------- $ 3,943,517 --------------- Total Real Estate $ 8,546,174 -------------------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 2.4% Internet Software & Services -- 0.4% 1,780,000 Cimpress NV, 7.0%, 4/1/22 (144A) $ 1,831,175 551,000 IAC, 4.875%, 11/30/18 558,576 --------------- $ 2,389,751 -------------------------------------------------------------------------------------------------------- IT Consulting & Other Services -- 0.5% 795,000 Change Healthcare Holdings LLC, 5.75%, 3/1/25 (144A) $ 815,869 735,000 Diamond 1 Finance Corp., 5.875%, 6/15/21 (144A) 779,100 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 33 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- IT Consulting & Other Services (continued) 1,455,000 Rackspace, 8.625%, 11/15/24 $ 1,540,481 --------------- $ 3,135,450 -------------------------------------------------------------------------------------------------------- Data Processing & Outsourced Services -- 1.3% EUR 1,250,000 Alliance Data Systems Co., 4.5%, 3/15/22 (144A) $ 1,421,696 1,765,000 Alliance Data Systems Company, 5.875, 11/1/21 1,826,775 3,100,000 Cardtronics, Inc., 5.125%, 8/1/22 3,162,000 610,000 Cardtronics, Inc., USA, 5.5%, 5/1/25 (144A) 622,962 1,260,000 First Data Corp., 7.0%, 12/1/23 (144A) 1,350,972 --------------- $ 8,384,405 -------------------------------------------------------------------------------------------------------- Application Software -- 0.2% 1,430,000 Open Text Corp., 5.875%, 6/1/26 (144A) $ 1,526,525 --------------- Total Software & Services $ 15,436,131 -------------------------------------------------------------------------------------------------------- TECHNOLOGY HARDWARE & EQUIPMENT -- 0.7% Communications Equipment -- 0.1% 512,000 CommScope Technologies Finance LLC, 6.0%, 6/15/25 (144A) $ 545,920 -------------------------------------------------------------------------------------------------------- Computer Hardware -- 0.2% 910,000 Diebold Nixdorf, Inc., 8.5%, 4/15/24 $ 1,014,650 -------------------------------------------------------------------------------------------------------- Electronic Components -- 0.4% EUR 250,000 Belden, Inc., 4.125%, 10/15/26 (144A) $ 279,210 1,000,000 Belden, Inc., 5.25%, 7/15/24 (144A) 1,010,000 EUR 1,095,000 Belden, Inc., 5.5%, 4/15/23 1,257,056 --------------- $ 2,546,266 --------------- Total Technology Hardware & Equipment $ 4,106,836 -------------------------------------------------------------------------------------------------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 0.1% Semiconductors -- 0.1% 434,000 Micron Technology, Inc., 5.5%, 2/1/25 $ 453,530 --------------- Total Semiconductors & Semiconductor Equipment $ 453,530 -------------------------------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES -- 6.6% Integrated Telecommunication Services -- 2.1% 2,260,000 CenturyLink, Inc., 5.625%, 4/1/25 $ 2,206,325 6,075,000 Frontier Communications Corp., 8.75%, 4/15/22 5,860,492 1,665,000 GCI, Inc., 6.875%, 4/15/25 1,789,875 2,975,000 Windstream Services LLC, 7.75%, 10/15/20 3,034,500 --------------- $ 12,891,192 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 34 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Wireless Telecommunication Services -- 4.5% 2,800,000 Altice Financing SA, 6.5%, 1/15/22 (144A) $ 2,936,500 600,000 Altice Finco SA, 8.125%, 1/15/24 (144A) 648,000 3,320,000 Digicel, Ltd., 6.0%, 4/15/21 (144A) 3,154,000 EUR 1,425,000 Impera Holdings SA, 5.375%, 9/15/22 (144A) 1,597,534 1,050,000 Mobile Telesystems OJSC via MTS International Funding, Ltd., 5.0%, 5/30/23 (144A) 1,090,792 4,825,000 MTN Mauritius Investment, Ltd., 5.373%, 2/13/22 (144A) 4,913,042 4,685,000 Sprint Corp., 7.25%, 9/15/21 5,124,219 1,155,000 T-Mobile USA, Inc., 6.0%, 4/15/24 1,251,442 2,750,000 Unison Ground Lease Funding LLC, 5.78%, 3/16/43 (144A) 2,720,653 2,470,000 VimpelCom Holdings BV, 7.5043%, 3/1/22 (144A) 2,799,770 RUB 124,400,000 VimpelCom Holdings BV, 9.0%, 2/13/18 (144A) 2,181,320 --------------- $ 28,417,272 --------------- Total Telecommunication Services $ 41,308,464 -------------------------------------------------------------------------------------------------------- UTILITIES -- 4.5% Electric Utilities -- 2.2% 1,325,000 Centrais Eletricas Brasileiras SA, 5.75%, 10/27/21 $ 1,356,800 EUR 1,475,000 ContourGlobal Power Holdings SA, 5.125%, 6/15/21 (144A) 1,703,188 1,325,000 5.25 Electricite de France SA, Floating Rate Note (Perpetual) (144A) 1,325,000 2,395,000 8.13 Enel S.p.A., Floating Rate Note, 9/24/73 (144A) 2,802,150 725,000 Stoneway Capital Corp., 10.0%, 3/1/27 (144A) 761,250 137,000 Talen Energy Supply LLC, 4.625%, 7/15/19 (144A) 134,945 3,260,000 Talen Energy Supply LLC, 6.5%, 6/1/25 2,591,700 2,715,000 TerraForm Power, 9.75%, 8/15/22 (144A) 3,013,650 --------------- $ 13,688,683 -------------------------------------------------------------------------------------------------------- Gas Utilities -- 0.6% 2,133,000 DCP Midstream Operating LP, 5.6%, 4/1/44 $ 2,037,015 1,850,000 Ferrellgas LP, 6.75%, 6/15/23 1,785,250 --------------- $ 3,822,265 -------------------------------------------------------------------------------------------------------- Multi-Utilities -- 0.5% 3,150,246 Ormat Funding Corp., 8.25%, 12/30/20 $ 3,150,246 -------------------------------------------------------------------------------------------------------- Independent Power Producers & Energy Traders -- 1.2% 1,195,000 Calpine Corp., 5.25%, 6/1/26 (144A) $ 1,202,469 725,000 Calpine Corp., 5.75%, 1/15/25 701,438 940,000 Instituto Costarricense de Electricidad, 6.95%, 11/10/21 (144A) 999,822 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 35 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Independent Power Producers & Energy Traders (continued) 1,800,000 NRG Energy, Inc., 6.25%, 5/1/24 $ 1,793,700 1,705,000 NRG Energy, Inc., 6.625%, 1/15/27 1,687,950 1,370,000 NRG Energy, Inc., 7.25%, 5/15/26 1,400,825 205,000 TerraForm Power Operating LLC, 6.375%, 2/1/23 (Step) (144A) 211,919 --------------- $ 7,998,123 --------------- Total Utilities $ 28,659,317 -------------------------------------------------------------------------------------------------------- TOTAL CORPORATE BONDS (Cost $500,959,640) $ 510,612,133 -------------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATIONS -- 1.1% 4,790,000 U.S. Treasury Bills, 5/18/17 (c) $ 4,788,462 2,000,000 U.S. Treasury Bills, 5/11/17 (c) 1,999,632 --------------- $ 6,788,094 -------------------------------------------------------------------------------------------------------- TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATIONS (Cost $6,787,927) $ 6,788,094 -------------------------------------------------------------------------------------------------------- FOREIGN GOVERNMENT BONDS -- 7.8% 1,845,000 Africa Finance Corp., 4.375%, 4/29/20 (144A) $ 1,909,354 2,250,000 Brazil Minas SPE via State of Minas Gerais, 5.333%, 2/15/28 (144A) 2,221,875 2,650,000 City of Buenos Aires Argentina, 7.5%, 6/1/27 (144A) 2,838,680 560,000 Ecuador Government International Bond, 10.5%, 3/24/20 (144A) 599,200 EGP 67,975,000 Egypt Treasury Bill, 3/6/18 (c) 3,247,002 1,321,053 6.79 EP PetroEcuador via Noble Sovereign Funding I, Ltd., Floating Rate Note, 9/24/19 1,323,695 690,000 Gabon Government International Bond, 6.375%, 12/12/24 (144A) 675,682 GHS 4,350,000 Ghana Government Bond, 21.5%, 3/9/20 1,055,664 GHS 9,405,000 Ghana Government Bond, 24.5%, 4/22/19 2,369,213 GHS 4,085,000 Ghana Government Bond, 24.75%, 7/19/21 1,106,513 1,770,000 Hazine Mustesarligi, 5.004%, 4/6/23 (144A) 1,803,630 925,000 Honduras Government International Bond, 6.25%, 1/19/27 (144A) 957,976 900,000 Jordan Government International Bond, 5.75%, 1/31/27 (144A) 889,038 1,535,000 Kenya Government International Bond, 5.875%, 6/24/19 (144A) 1,587,113 MXN 77,241,758 Mexican Udibonos, 2.0%, 6/9/22 3,860,715 The accompanying notes are an integral part of these financial statements. 36 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- FOREIGN GOVERNMENT BONDS (continued) MXN 9,886,577 Mexican Udibonos, 3.5%, 12/14/17 $ 524,673 EUR 1,915,000 Mexico Government International Bond, 4.0%, 3/15/15 1,875,735 1,415,000 Namibia International Bonds, 5.25%, 10/29/25 (144A) 1,432,688 1,760,000 Oman Government International Bond, 5.375%, 3/8/27 (144A) 1,836,278 1,334,660 Province of Salta Argentina, 9.5%, 3/16/22 (144A) 1,418,076 1,380,000 Provincia de Buenos Aires Argentina, 9.125%, 3/16/24 (144A) 1,566,990 2,590,000 Provincia de Entre Rios Argentina, 8.75%, 2/8/25 (144A) 2,646,151 3,015,000 Provincia del Chubut Argentina, 7.75%, 7/26/26 (144A) 3,034,386 1,125,000 Republic Of Argentina, 6.825%, 1/26/27 1,188,562 1,850,000 Republic Of Argentina, 7.5%, 4/22/26 2,026,675 RON 8,220,000 Romania Government Bond, 5.85%, 4/26/23 2,255,088 2,575,000 Turkey Government International Bond, 6.0%, 3/25/27 2,755,250 --------------- $ 49,005,902 -------------------------------------------------------------------------------------------------------- TOTAL FOREIGN GOVERNMENT BONDS (Cost $49,966,265) $ 49,005,902 -------------------------------------------------------------------------------------------------------- SENIOR FLOATING RATE LOAN INTERESTS -- 3.0%** ENERGY -- 0.3% Oil & Gas Drilling -- 0.3% 1,950,000 7.00 Gavilan Resources LLC, Initial Term Loan (Second Lien), 2/23/24 $ 1,945,710 -------------------------------------------------------------------------------------------------------- Coal & Consumable Fuels -- 0.0%+ 1,034,769 8.15 Long Haul Holdings, Ltd., Facility B Loan, 11/17/13 (d) $ 108,651 --------------- Total Energy $ 2,054,361 -------------------------------------------------------------------------------------------------------- MATERIALS -- 0.6% Paper Packaging -- 0.3% 1,615,000 6.65 Caraustar Industries, Inc., Refinancing Term Loan, 3/9/22 $ 1,630,141 -------------------------------------------------------------------------------------------------------- Diversified Metals & Mining -- 0.0%+ 64,892 3.75 Fortescue Metals Group Ltd., Bank Loan, 6/30/19 $ 65,371 -------------------------------------------------------------------------------------------------------- Steel -- 0.3% 1,985,025 4.91 Zekelman Industries, Inc., Term Loan, 6/8/21 $ 2,011,078 --------------- Total Materials $ 3,706,590 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 37 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 0.3% Aerospace & Defense -- 0.3% 1,845,711 7.75 DynCorp International, Inc., Term Loan B2, 7/7/20 $ 1,852,632 --------------- Total Capital Goods $ 1,852,632 -------------------------------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES -- 0.1% Diversified Support Services -- 0.1% 489,559 3.76 IAP Worldwide Services, Inc., Term Loan, 7/18/19 $ 465,081 --------------- Total Commercial Services & Supplies $ 465,081 -------------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.0%+ Auto Parts & Equipment -- 0.0%+ 1,773 2.99 Allison Transmission, Inc., Term B-3 Loan, 8/23/19 $ 1,793 --------------- Total Automobiles & Components $ 1,793 -------------------------------------------------------------------------------------------------------- MEDIA -- 0.3% Advertising -- 0.3% 2,127,200 6.75 Affinion Group, Inc., Tranche B Term Loan, 4/30/18 $ 2,127,011 --------------- Total Media $ 2,127,011 -------------------------------------------------------------------------------------------------------- RETAILING -- 0.2% Automotive Retail -- 0.2% 1,398,829 4.74 CWGS Group LLC, Term Loan, 11/3/23 $ 1,410,370 --------------- Total Retailing $ 1,410,370 -------------------------------------------------------------------------------------------------------- HOUSEHOLD & PERSONAL PRODUCTS -- 0.4% Household Products -- 0.2% 1,397,813 8.50 Redbox Automated Retail LLC, Term Loan (First Lien), 9/28/21 $ 1,402,471 -------------------------------------------------------------------------------------------------------- Personal Products -- 0.2% 796,000 4.49 Revlon Consumer Products Corp., Initial Term B Loan, 7/22/23 $ 798,932 --------------- Total Household & Personal Products $ 2,201,403 -------------------------------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 0.7% Health Care Services -- 0.5% 999,129 4.35 Alliance HealthCare Services, Inc., Initial Term Loan, 6/3/19 $ 999,754 657,679 6.50 BioScrip, Inc., Initial Term B Loan, 7/31/20 652,336 394,608 6.50 BioScrip, Inc., Term Loan, 7/31/20 391,401 1,310,000 4.50 National Surgical Hospitals, Inc., Term Loan (First Lien), 5/15/22 1,310,786 --------------- $ 3,354,277 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 38 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------- Principal Floating Amount ($)(l) Rate (b) Value -------------------------------------------------------------------------------------------------------- Managed Health Care -- 0.2% 591,387 10.25 MMM Holdings, Inc., Term Loan, 10/9/17 (d) $ 579,559 429,935 10.25 MSO of Puerto Rico, Inc., MSO Term Loan, 12/12/17 (d) 421,337 --------------- $ 1,000,896 --------------- Total Health Care Equipment & Services $ 4,355,173 -------------------------------------------------------------------------------------------------------- UTILITIES -- 0.1% Electric Utilities -- 0.1% 162,500 3.74 Vistra Operations Co LLC, Initial Term C Loan, 8/4/23 $ 162,348 710,719 3.75 Vistra Operations Co LLC, Initial Term Loan, 8/4/23 710,053 --------------- $ 872,401 --------------- Total Utilities $ 872,401 -------------------------------------------------------------------------------------------------------- TOTAL SENIOR FLOATING RATE LOAN INTERESTS (Cost $19,515,417) $ 19,046,815 -------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------- Shares -------------------------------------------------------------------------------------------------------- RIGHTS / WARRANTS -- 0.0%+ ENERGY -- 0.0%+ Oil & Gas Exploration & Production -- 0.0%+ 7,415 Midstates Petroleum Company, Inc. Warrants, 4/21/20 $ -- -------------------------------------------------------------------------------------------------------- Coal & Consumable Fuels -- 0.0%+ 56 Contura Energy, Inc., 7/26/23 $ 1,601 --------------- Total Energy $ 1,601 -------------------------------------------------------------------------------------------------------- TOTAL RIGHTS / WARRANTS (Cost $164) $ 1,601 -------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------- Principal Amount ($)(l) -------------------------------------------------------------------------------------------------------- MUNICIPAL COLLATERALIZED DEBT OBLIGATION -- 0.0%+ Municipal General -- 0.0%+ 8,875,000 0.00 Non-Profit Preferred Funding Trust I, Floating Rate Note, 9/15/37 (144A) $ 177,500 -------------------------------------------------------------------------------------------------------- TOTAL MUNICIPAL COLLATERALIZED DEBT OBLIGATION (Cost $8,860,350) $ 177,500 -------------------------------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENT -- 0.3% Commercial Paper -- 0.3% 1,580,000 Natixis NY, Commercial Paper, 5/1/17 (c) $ 1,579,879 -------------------------------------------------------------------------------------------------------- TOTAL TEMPORARY CASH INVESTMENT (Cost $1,580,000) $ 1,579,879 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 39 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Number Strike Expiration of Contracts Description Counterparty Price Date Value -------------------------------------------------------------------------------------------------------- CALL OPTIONS PURCHASED -- 0.0%+ MXN 297,012(i) Desarrolladora Homex Bank of New York SAB de CV Mellon Corp $--(k) 10/23/22 $ -- MXN 297,012(j) Desarrolladora Homex Bank of New York SAB de CV Mellon Corp --(k) 10/23/22 -- --------------- $ -- -------------------------------------------------------------------------------------------------------- TOTAL CALL OPTIONS PURCHASED (Premiums paid $0) $ -- -------------------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 98.3% (Cost $635,758,490) (a) $ 619,952,276 -------------------------------------------------------------------------------------------------------- OTHER ASSETS & LIABILITIES -- 1.7% $ 10,816,756 -------------------------------------------------------------------------------------------------------- NET ASSETS -- 100.0% $ 630,769,032 ======================================================================================================== * Non-income producing security. + Amount rounds to less than 0.1%. REIT Real Estate Investment Trust. (Perpetual) Security with no stated maturity date. (PIK) Represents a pay-in-kind security. (Cat Bond) Catastrophe or event linked bond. At April 30, 2017 the value of these securities amounted to $3,619,463 or 0.6% of net assets. See Notes to Financial Statements -- 1H. REMICS Real Estate Mortgage Investment Conduits. (Step) Bond issued with an initial coupon rate which converts to a higher rate at a later date. ** 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 rate of a certificate of deposit or (iv) other base lending rates used by commercial lenders. The rate shown is the coupon rate at period end. (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 April 30, 2017, the value of these securities amounted to $336,360,919 or 53.3% of net assets. (a) At April 30, 2017, the net unrealized depreciation on investments based on cost for federal income tax purposes of $637,476,827 was as follows: Aggregate gross unrealized appreciation for all investments in which there is an excess of value over tax cost $ 31,519,562 Aggregate gross unrealized depreciation for all investments in which there is an excess of tax cost over value (49,044,113) ------------ Net unrealized depreciation $(17,524,551) ============ The accompanying notes are an integral part of these financial statements. 40 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 (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 recognized through accretion of discount. (d) Security is in default. (e) Security is valued using fair value methods (other than prices supplied by independent pricing services or broker dealers). See Notes to Financial Statements -- Note 1A. (f) Structured reinsurance investment. At April 30, 2017, the value of these securities amounted to $12,156,508 or 1.9% of net assets. See Notes to Financial Statements -- Note 1H. (g) Rate to be determined. (h) Distributions of investments by country of domicile (excluding temporary cash investments) as a percentage of total investment in securities, is as follows: United States 52.6% Luxembourg 6.6% United Kingdom 4.6% Netherlands 4.1% Mexico 3.1% Argentina 2.8% Canada 2.4% France 2.3% Bermuda 2.0% Ireland 1.9% Turkey 1.7% Peru 1.4% Cayman Islands 1.2% Italy 1.1% Other (individually less than 1%) 12.2% ------ 100.0% ====== (i) Option does not become effective until underlying company's outstanding common shares reach a market capitalization of MXN 12.5 Billion. (j) Option does not become effective until underlying company's outstanding common shares reach a market capitalization of MXN 15.5 Billion. (k) Strike price is 1 Mexican Peso (MXN). (l) Principal amounts are denominated in U.S. Dollars unless otherwise noted: AUD Australian Dollar EGP Egyptian Pound EUR Euro GBP British Pound Sterling GHS Ghanian Cedis INR Indian Rupee JPY Japanese Yen MXN Mexican Peso RON Romanian Leu RUB Russian Ruble The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 41 Schedule of Investments | 4/30/17 (unaudited) (continued) Purchases and sales of securities (excluding temporary cash investments) for the six months ended April 30, 2017 were as follows: -------------------------------------------------------------------------------- Purchases Sales -------------------------------------------------------------------------------- Long-Term U.S. Government Securities $ -- $ -- Other Long-Term Securities $167,384,352 $204,170,961 The Fund is permitted to engage in purchase and sale transactions ("cross trades") with certain Funds and accounts for which Pioneer Investment Management, Inc. (PIM), serves as the Fund's investment adviser, as set forth in Rule 17a-7 under the Investment Company Act of 1940, pursuant to procedures adopted by the Board of Trustees. Under these procedures, cross trades are effected at current market prices. During the six months ended April 30, 2017, the Fund engaged in purchases and sales pursuant to these procedures amounting to $3,603,959 and $18,163,680, respectively, which resulted in a net realized gain of $485,468. CENTRALLY CLEARED CREDIT DEFAULT SWAP AGREEMENTS -- SELL PROTECTION -------------------------------------------------------------------------------------------------------- Premiums Notional Obligation Credit Expiration Received Unrealized Principal($)(1) Exchange Entity/Index Coupon Rating(2) Date (Paid) Appreciation -------------------------------------------------------------------------------------------------------- 4,326,700 Chicago Markit CDX 5.00% BBB+ 12/20/20 $ (33,363) $402,381 Mercentile North America Exchange High Yield Index 3,276,900 Chicago Markit CDX 5.00% BBB+ 6/20/21 141,038 159,629 Mercentile North America Exchange High Yield Index -------------------------------------------------------------------------------------------------------- $ 107,675 $562,010 ======================================================================================================== (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. 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. The accompanying notes are an integral part of these financial statements. 42 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 The following is a summary of the inputs used as of April 30, 2017, in valuing the Fund's investments: ------------------------------------------------------------------------------------------ Level 1 Level 2 Level 3 Total ------------------------------------------------------------------------------------------ Convertible Corporate Bonds $ -- $ 14,030,597 $ -- $ 14,030,597 Preferred Stocks Transportation Air Freight & Logistics -- 771,338 -- 771,338 Diversified Financials Consumer Finance 2,467,685 -- -- 2,467,685 Convertible Preferred Stock 3,215,563 -- -- 3,215,563 Common Stocks Energy Oil & Gas Exploration & Production 1,192,236 745,569 1,937,805 Capital Goods Industrial Machinery -- -- 1,560 1,560 Commercial Services & Supplies Diversified Support Services -- 84,949 -- 84,949 Transportation Air Freight & Logistics 316,730 -- 316,730 Consumer Services Education Services 120,666 -- 120,666 All Other Common Stocks 1,520,820 -- -- 1,520,820 Asset Backed Securities -- 460,288 -- 460,288 Collateralized Mortgage Obligations -- 7,812,351 -- 7,812,351 Corporate Bonds Insurance Reinsurance -- 3,619,463 12,156,508 15,775,971 All Other Corporate Bonds -- 494,836,162 -- 494,836,162 U.S. Government and Agency Obligations -- 6,788,094 -- 6,788,094 Foreign Government Bonds -- 49,005,902 -- 49,005,902 Senior Floating Rate Loan Interests -- 19,046,815 -- 19,046,815 Rights/Warrants -- 1,601 -- 1,601 Municipal Collateralized Debt Obligation -- 177,500 -- 177,500 Commercial Paper -- 1,579,879 1,579,879 Call Options Purchased -- -- -- -- ------------------------------------------------------------------------------------------ Total $ 8,396,304 $599,397,904 $ 12,158,068 $619,952,276 ========================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 43 Schedule of Investments | 4/30/17 (unaudited) (continued) ---------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ---------------------------------------------------------------------------------------- Other Financial Instruments Unrealized appreciation on forward foreign currency contracts $-- $ 21,978 $-- $ 21,978 Unrealized depreciation on forward foreign currency contracts -- (89,441) -- (89,441) Unrealized appreciation on centrally cleared swap contracts -- 562,009 -- 562,009 ---------------------------------------------------------------------------------------- Total Other Financial Instruments $-- $494,546 $-- $494,546 ======================================================================================== The following is a reconciliation of assets valued using significant observable inputs (Level 3): ---------------------------------------------------------------------------------------------- Convertible Common Corporate Corporate Stocks Bonds Bonds Total ---------------------------------------------------------------------------------------------- Balance as of 10/31/16 $ 4,300,699 $ 346,412 $ 27,598,609 $ 32,245,720 Realized gain (loss)(1) (2,417,743) (3,729,029) 5,450 (6,141,322) Change in unrealized appreciation (depreciation)(2) 2,584,216 3,729,029 (560,967) 5,752,278 Purchases -- -- 7,043,196 7,043,196 Sales (4,465,612) (346,412) (21,929,780) (26,741,804) Transfers between Level 3* -- -- -- -- ---------------------------------------------------------------------------------------------- Balance as of 4/30/17 $ 1,560 $ -- $ 12,156,508 $ 12,158,068 ============================================================================================== 1 Realized gain (loss) on these securities is included in the net realized gain (loss) from investments in the Statement of Operations. 2 Unrealized appreciation (depreciation) on these securities is included in the change in unrealized appreciation (depreciation) on investments in the Statement of Operations. * Transfers are calculated on the beginning of period values. During the six months ended April 30, 2017, there were no transfers between Levels 1, 2 and 3. Net change in unrealized appreciation (depreciation) of investments still held as of 4/30/17 $(239,574) --------- The accompanying notes are an integral part of these financial statements. 44 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 Statement of Assets and Liabilities | 4/30/17 (unaudited) ASSETS: Investment in securities (cost $635,758,490) $ 619,952,276 Cash 2,987,817 Foreign currencies, at value (cost $5,801,411) 5,909,606 Restricted cash* 419,636 Receivables -- Investment securities sold 3,869,916 Fund shares sold 1,762,197 Dividends 56,104 Interest 8,822,825 Unrealized appreciation on forward foreign currency contracts 21,978 Variation margin on centrally cleared swap contracts 3,879 Other assets 41,128 ---------------------------------------------------------------------------------------- Total assets $ 643,847,362 ======================================================================================== LIABILITIES: Payables -- Investment securities purchased $ 8,973,528 Fund shares repurchased 3,110,482 Distributions 439,595 Trustee fees 3,573 Unrealized depreciation on forward foreign currency contracts 89,441 Due to affiliates 72,388 Accrued expenses 389,323 ---------------------------------------------------------------------------------------- Total liabilities $ 13,078,330 ======================================================================================== NET ASSETS: Paid-in capital $1,147,429,547 Distributions in excess of net investment income (1,412,228) Accumulated net realized loss on investments, swap contracts, futures contracts and foreign currency transactions (500,005,844) Net unrealized depreciation on investments (15,806,214) Unrealized appreciation on swap contracts 562,009 Net unrealized appreciation on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 1,762 ---------------------------------------------------------------------------------------- Net assets $ 630,769,032 ======================================================================================== NET ASSET VALUE PER SHARE: No par value (unlimited number of shares authorized) Class A (based on $183,570,931/20,567,547 shares) $ 8.93 Class C (based on $165,080,547/18,543,269 shares) $ 8.90 Class Y (based on $282,117,554/32,185,628 shares) $ 8.77 MAXIMUM OFFERING PRICE: Class A ($8.93 (divided by) 95.5%) $ 9.35 ======================================================================================== * Represents restricted cash deposited at the counterparty for derivative contracts The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 45 Statement of Operations (unaudited) For the Six Months Ended April 30, 2017 INVESTMENT INCOME: Interest $ 22,500,812 Dividends 188,118 ----------------------------------------------------------------------------------------------- Total investment income $ 22,688,930 ----------------------------------------------------------------------------------------------- EXPENSES: Management fees $ 2,185,622 Transfer agent fees Class A 138,900 Class C 85,311 Class Y 160,604 Distribution fees Class A 237,389 Class C 855,311 Shareholder communication expense 34,353 Administrative expense 111,399 Custodian fees 36,625 Registration fees 35,587 Professional fees 29,518 Printing expense 19,896 Fees and expenses of nonaffiliated Trustees 13,852 Miscellaneous 63,980 ----------------------------------------------------------------------------------------------- Total expenses $ 4,008,347 ----------------------------------------------------------------------------------------------- Net investment income $ 18,680,583 ----------------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS, CLASS ACTIONS, SWAP CONTRACTS AND FOREIGN CURRENCY TRANSACTIONS: Net realized gain (loss) on: Investments $ (17,748,476) Class actions 86,981 Swap contracts 95,815 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (472,214) $ (18,037,894) ----------------------------------------------------------------------------------------------- Change in net unrealized appreciation (depreciation) on: Investments $ 32,418,804 Swap contracts 269,629 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (317,604) $ 32,370,829 ----------------------------------------------------------------------------------------------- Net realized and unrealized gain (loss) on investments, class actions, swap contracts and foreign currency transactions $ 14,332,935 ----------------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $ 33,013,518 =============================================================================================== The accompanying notes are an integral part of these financial statements. 46 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 Statements of Changes in Net Assets ----------------------------------------------------------------------------------------- Six Months Ended 4/30/17 Year Ended (unaudited) 10/31/16 ----------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income $ 18,680,583 $ 49,164,741 Net realized gain (loss) on investments, class actions, swap contracts and foreign currency transactions (18,037,894) (93,291,792) Change in net unrealized appreciation (depreciation) on investments, swap contracts and foreign currency transactions 32,370,829 77,920,640 ----------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $ 33,013,518 $ 33,793,589 ----------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.24 and $0.47 per share, respectively) $ (5,284,347) $ (12,102,966) Class C ($0.21 and $0.41 per share, respectively) (4,157,544) (9,849,973) Class Y ($0.25 and $0.48 per share, respectively) (7,981,452) (20,292,853) Tax return of capital: Class A ($0.00 and $0.04 per share, respectively) -- (1,039,895) Class C ($0.00 and $0.04 per share, respectively) -- (957,019) Class Y ($0.00 and $0.04 per share, respectively) -- (1,462,389) ----------------------------------------------------------------------------------------- Total distributions to shareowners $ (17,423,343) $ (45,705,095) ----------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 58,178,995 $ 107,183,404 Reinvestment of distributions 15,114,421 40,330,239 Cost of shares repurchased (123,278,064) (447,001,020) ----------------------------------------------------------------------------------------- Net decrease in net assets resulting from Fund share transactions $ (49,984,648) $ (299,487,377) ----------------------------------------------------------------------------------------- Net decrease in net assets $ (34,394,473) $ (311,398,883) NET ASSETS: Beginning of period $ 665,163,505 $ 976,562,388 ----------------------------------------------------------------------------------------- End of period $ 630,769,032 $ 665,163,505 ----------------------------------------------------------------------------------------- Distributions in excess of net investment income $ (1,412,228) $ (2,669,468) ========================================================================================= The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 47 Statements of Changes in Net Assets (continued) -------------------------------------------------------------------------------------- Six Months Six Months Ended Ended 4/30/17 4/30/17 Year Ended Year Ended Shares Amount 10/31/16 10/31/16 (unaudited) (unaudited) Shares Amount -------------------------------------------------------------------------------------- Class A Shares sold 704,011 $ 6,118,288 1,502,404 $ 12,563,258 Reinvestment of distributions 533,980 4,685,867 1,415,368 11,855,334 Less shares repurchased (3,799,256) (33,239,193) (9,210,188) (76,947,782) -------------------------------------------------------------------------------------- Net decrease (2,561,265) $ (22,435,038) (6,292,416) $ (52,529,190) ====================================================================================== Class C Shares sold 301,765 $ 2,630,350 755,257 $ 6,249,038 Reinvestment of distributions 388,020 3,397,154 1,047,555 8,752,547 Less shares repurchased (3,274,864) (28,556,620) (8,203,488) (68,568,704) -------------------------------------------------------------------------------------- Net decrease (2,585,079) $ (22,529,116) (6,400,676) $ (53,567,119) ====================================================================================== Class Y Shares sold 5,749,091 $ 49,430,357 10,732,152 $ 88,371,108 Reinvestment of distributions 815,492 7,031,400 2,404,961 19,722,358 Less shares repurchased (7,157,271) (61,482,251) (37,531,165) (301,484,534) -------------------------------------------------------------------------------------- Net decrease (592,688) $ (5,020,494) (24,394,052) $ (193,391,068) ====================================================================================== The accompanying notes are an integral part of these financial statements. 48 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 Financial Highlights ------------------------------------------------------------------------------------------------------------------------------------ Six Months Year Year Ended Year Year Year Ended Ended 4/30/17 Ended Ended Ended 10/31/13 10/31/12 (unaudited) 10/31/16 10/31/15 10/31/14 (Consolidated) (Consolidated) ------------------------------------------------------------------------------------------------------------------------------------ Class A Net asset value, beginning of period $ 8.71 $ 8.64 $ 9.79 $ 10.13 $ 10.13 $ 9.83 ------------------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income (loss) $ 0.26(a) $ 0.54(a) $ 0.58(a) $ 0.66 $ 0.71 $ 0.76 Net realized and unrealized gain (loss) on investments 0.20 0.04(b) (1.19) (0.34) (0.02) 0.35 ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 0.46 $ 0.58 $ (0.61) $ 0.32 $ 0.69 $ 1.11 ------------------------------------------------------------------------------------------------------------------------------------ Distribution to shareowners: Net investment income $ (0.24) $ (0.47) $ (0.46) $ (0.63) $ (0.69) $ (0.81) Tax return of capital -- (0.04) (0.08) (0.03) -- -- ------------------------------------------------------------------------------------------------------------------------------------ Total distributions $ (0.24) $ (0.51) $ (0.54) $ (0.66) $ (0.69) $ (0.81) ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 0.22 $ 0.07 $ (1.15) $ (0.34) $ -- $ 0.30 ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 8.93 $ 8.71 $ 8.64 $ 9.79 $ 10.13 $ 10.13 ==================================================================================================================================== Total return* 5.35%(d) 7.14%(c) (6.36)% 3.16% 6.96% 11.89% Ratio of net expenses to average net assets 1.20%** 1.19% 1.17% 1.13% 1.10% 1.10% Ratio of net investment income (loss) to average net assets 5.97%** 6.50% 6.31% 6.62% 6.97% 7.74% Portfolio turnover rate 54%** 40% 32% 32% 33% 33% Net assets, end of period (in thousands) $183,571 $201,360 $254,056 $373,543 $ 531,829 $602,568 ==================================================================================================================================== * 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 per share data presented above is based on the average shares outstanding for the period presented. (b) 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. (c) If the Fund had not recognized gains in the settlement of class action lawsuits during the year ended October 31, 2016, the total return would have been 7.01%. (d) If the Fund had not recognized gain in the settlement of class action lawsuits during the period ended April 30, 2017, the total return would have been 5.23%. The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 49 Financial Highlights (continued) ------------------------------------------------------------------------------------------------------------------------------------ Six Months Year Year Ended Year Year Year Ended Ended 4/30/17 Ended Ended Ended 10/31/13 10/31/12 (unaudited) 10/31/16 10/31/15 10/31/14 (Consolidated) (Consolidated) ------------------------------------------------------------------------------------------------------------------------------------ Class C Net asset value, beginning of period $ 8.69 $ 8.62 $ 9.76 $ 10.10 $ 10.10 $ 9.80 ------------------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income (loss) $ 0.23(a) $ 0.48(a) $ 0.51(a) $ 0.59 $ 0.63 $ 0.69 Net realized and unrealized gain (loss) on investments 0.19 0.04(b) (1.17) (0.34) (0.01) 0.35 ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 0.42 $ 0.52 $ (0.66) $ 0.25 $ 0.62 $ 1.04 ------------------------------------------------------------------------------------------------------------------------------------ Distribution to shareowners: Net investment income $ (0.21) $ (0.41) $ (0.40) $ (0.56) $ (0.62) $ (0.74) Tax return of capital -- (0.04) (0.08) (0.03) -- -- ------------------------------------------------------------------------------------------------------------------------------------ Total distributions $ (0.21) $ (0.45) $ (0.48) $ (0.59) $ (0.62) $ (0.74) ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 0.21 $ 0.07 $ (1.14) $ (0.34) $ -- $ 0.30 ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 8.90 $ 8.69 $ 8.62 $ 9.76 $ 10.10 $ 10.10 ==================================================================================================================================== Total return* 5.15% 6.40%(c) (6.96)% 2.43% 6.23% 11.17% Ratio of net expenses to average net assets 1.90%** 1.90% 1.87% 1.83% 1.81% 1.78% Ratio of net investment income (loss) to average net assets 5.27%** 5.79% 5.61% 5.91% 6.26% 7.08% Portfolio turnover rate 54%** 40% 32% 32% 33% 33% Net assets, end of period (in thousands) $165,081 $183,542 $237,163 $354,162 $ 420,932 $468,920 ==================================================================================================================================== * 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 per share data presented above is based on the average shares outstanding for the period presented. (b) 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. (c) If the Fund had not recognized gains in the settlement of class action lawsuits during the year ended October 31, 2016, the total return would have been 6.28%. The accompanying notes are an integral part of these financial statements. 50 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 ------------------------------------------------------------------------------------------------------------------------------------ Six Months Year Year Ended Year Year Year Ended Ended 4/30/17 Ended Ended Ended 10/31/13 10/31/12 (unaudited) 10/31/16 10/31/15 10/31/14 (Consolidated) (Consolidated) ------------------------------------------------------------------------------------------------------------------------------------ Class Y Net asset value, beginning of period $ 8.55 $ 8.49 $ 9.62 $ 9.96 $ 9.96 $ 9.66 ------------------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income (loss) $ 0.27(a) $ 0.57(a) $ 0.60(a) $ 0.67 $ 0.72 $ 0.76 Net realized and unrealized gain (loss) on investments 0.20 0.01(b) (1.17) (0.33) (0.01) 0.37 ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 0.47 $ 0.58 $ (0.57) $ 0.34 $ 0.71 $ 1.13 ------------------------------------------------------------------------------------------------------------------------------------ Distribution to shareowners: Net investment income $ (0.25) $ (0.48) $ (0.48) $ (0.65) $ (0.71) $ (0.83) Tax return of capital -- (0.04) (0.08) (0.03) -- -- ------------------------------------------------------------------------------------------------------------------------------------ Total distributions $ (0.25) $ (0.52) $ (0.56) $ (0.68) $ (0.71) $ (0.83) ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 0.22 $ 0.06 $ (1.13) $ (0.34) $ -- $ 0.30 ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 8.77 $ 8.55 $ 8.49 $ 9.62 $ 9.96 $ 9.96 ==================================================================================================================================== Total return* 5.54%(c) 7.34% (6.08)% 3.40% 7.27% 12.35% Ratio of net expenses to average net assets 0.91%** 0.90% 0.87% 0.84% 0.82% 0.80% Ratio of net investment income (loss) to average net assets 6.23%** 6.93% 6.60% 6.88% 7.24% 8.03% Portfolio turnover rate 54%** 40% 32% 32% 33% 33% Net assets, end of period (in thousands) $282,118 $280,262 $485,344 $682,911 $ 780,656 $945,946 ==================================================================================================================================== * 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. (a) The per share data presented above is based on the average shares outstanding for the period presented. (b) 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. (c) If the Fund had not recognized gain in the settlement of class action lawsuits during the period ended April 30, 2017, the total return would have been 5.42%. The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 51 Notes to Financial Statements | 4/30/17 (unaudited) 1. Organization and Significant Accounting Policies Pioneer Global High Yield Fund (the Fund) is one of two portfolios comprising Pioneer Series Trust VII (the Trust), a Delaware statutory trust. The Fund is registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The investment objective of the Fund is to maximize total return through a combination of income and capital appreciation. The Fund offers three classes of shares designated as Class A, Class C and Class Y shares. Class Z shares converted to Class Y shares as of the close of business on August 7, 2015. 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 (U.S. GAAP) that require the management of the Fund to 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 Fund is an investment company and follows investment company accounting and reporting guidance under U.S. GAAP. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements: 52 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 A. Security Valuation 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 by using 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, or may use a pricing matrix or other fair value methods or techniques to provide an estimated value of the security or instrument. A pricing matrix is a means of valuing a debt security on the basis of current market prices for other debt securities, historical trading patterns in the market for fixed income securities and/or other factors. Non-U.S. debt securities that are listed on an exchange will be valued at the bid price obtained from an independent third party pricing service. When independent market quotations are considered to be unreliable, the value of that security may be determined using quotations from one or more broker-dealers. Loan interests 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 third party 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 or catastrophe bonds are valued at the bid price obtained from an independent third party pricing service. Other insurance linked securities (including sidecars, collateralized reinsurance and industry loss warranties) 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. The value of foreign securities is translated into U.S. dollars based on foreign currency exchange rate quotations supplied by a third party pricing source. Trading in non-U.S. equity 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. The Fund may use a fair value model developed by an independent pricing service to value non-U.S. equity securities. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 53 Equity securities that have traded on an exchange are valued by using 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 or, if both last bid and asked prices are not available, at the last quoted bid price. Last sale and bid and asked prices are provided by independent third party pricing services. In the case of equity securities not traded on an exchange, prices are typically determined by independent third party pricing services using a variety of techniques and methods. Swap contracts, including interest rate swaps, caps and floors (other than centrally cleared swap contracts) are valued at the dealer quotations obtained from reputable International Swap Dealers association members. Centrally cleared swaps are valued at the daily settlement price provided by the central clearing counterparty. Forward foreign currency exchange contracts are valued daily using the foreign exchange rate or, for longer term forward contract positions, the spot currency rate and the forward points on a daily basis, in each case provided by a third party pricing service. Contracts whose forward settlement date falls between two quoted days are valued by interpolation. Securities or loan interests for which independent pricing services or broker dealers 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 and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), 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. 54 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 At April 30, 2017, three securities were valued using fair value methods (in addition to securities valued using prices supplied by independent pricing services, broker-dealers or using a third party insurance industry pricing model) representing less than 0.1% of net assets. 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, including interest on income bearing cash accounts, is recorded on the accrual basis, net of unrecoverable foreign taxes withheld at the applicable country rates. Security transactions are recorded as of trade date. 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 prices of those securities but are included with the net realized and unrealized gain or loss on investments. D. 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 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 55 the time a hedge 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). E. 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 net taxable income and net realized capital gains, if any, to its shareowners. Therefore, no provision for federal income taxes is required. As of October 31, 2016, 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. GAAP. 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. The tax character of current year distributions payable will be determined at the end of the current taxable year. The tax character of distributions paid during the years ended October 31, 2016 was as follows: ---------------------------------------------------------------------------- 2016 ---------------------------------------------------------------------------- Distributions paid from: Ordinary income $ 42,245,792 Tax return of capital 3,459,303 ---------------------------------------------------------------------------- Total $ 45,705,095 ============================================================================ 56 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 The following shows the components of distributable earnings on a federal income tax basis at October 31, 2016: ---------------------------------------------------------------------------- 2016 ---------------------------------------------------------------------------- Distributable earnings: Capital loss carryforward $(481,966,368) Current year dividend payable (360,623) Net unrealized depreciation (49,923,699) ---------------------------------------------------------------------------- Total $(532,250,690) ============================================================================ The difference between book basis and tax basis unrealized depreciation is attributable to the tax deferral of losses on wash sales, the mark-to-market of foreign currency contracts and swaps, adjustments relating to catastrophe bonds, swaps, partnerships, interest on defaulted bonds, and interest accruals on preferred stock. F. 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, earned $3,333 in underwriting commissions on the sale of Class A shares during the six months ended April 30, 2017. 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 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 Fund's transfer agent 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 Global High Yield Fund | Semiannual Report | 4/30/17 57 H. Insurance-Linked Securities (ILS) 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. 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"). A traditional ILW takes the form of a bilateral reinsurance contract, but there are also products that take the form of derivatives, collateralized structures, or exchange traded instruments. Structured reinsurance investments, including quota share instruments, collateralized reinsurance investments and ILWs, are subject to the same risks as event-linked bonds. In addition, where the instruments are based on the performance 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 structured reinsurance investments and therefore the Fund's assets are placed at greater risk of loss than if PIM had more complete information. Structured reinsurance instruments generally will be considered illiquid securities by the Fund. These securities may be difficult to purchase, sell or unwind. Illiquid securities also may be difficult to value. If the Fund is forced to sell an illiquid asset, the Fund may be forced to sell at a loss. 58 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 I. Risks The value of securities held by the Fund may go up or down, sometimes rapidly or unpredictably, due to general market conditions, such as real or perceived adverse economic, political or regulatory conditions, inflation, changes in interest rates, lack of liquidity in the bond markets or adverse investor sentiment. In the past several years, financial markets have experienced increased volatility, depressed valuations, decreased liquidity and heightened uncertainty. These conditions may continue, recur, worsen or spread. 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 investments in foreign markets and countries with limited developing markets may subject the Fund to a greater degree of risk than in a developed market. These risks include disruptive political or economic conditions and the imposition of adverse governmental laws or currency exchange restrictions. 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. Interest rates in the U.S. recently have been historically low, so the Fund faces a heightened risk that interest rates may rise. A general rise in interest rates may cause investors to move out of fixed income securities on a large scale, which could adversely affect the price and liquidity of fixed income securities and could also result in increased redemptions from the Fund. Certain securities in which the Fund invests, including floating rate loans, once sold, may not settle for an extended period (for example, several weeks or even longer). The Fund will not receive its sale proceeds until that time, which may constrain the Fund's ability to meet its obligations (including obligations to redeeming shareholders). The Fund invests in below investment grade (high yield) debt securities and preferred stocks. Some of these high yield securities may be convertible into equity securities of the issuer. Debt securities rated below investment grade are commonly referred to as "junk bonds" and are considered speculative. These securities involve greater risk of loss, are subject to greater price volatility, and are less liquid, especially during periods of economic uncertainty or change, than higher rated debt securities. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 59 J. 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 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. 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. 60 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 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. The amount of cash deposited with a broker as collateral at April 30, 2017 was $415,255 and is recorded within "Restricted Cash" on the Statement of Assets and Liabilities. Open credit default swap contracts at April 30, 2017, are listed in the Schedule of Investments. The average value of swap contracts open during the six months ended April 30, 2017 was $535,000. K. Purchased Options The Fund may purchase put and call options 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. The average value of contracts open during the six months ended April 30, 2017 was $-. Purchased options open at period end are listed in the Fund's Schedule of Investments. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 61 2. Management Agreement PIM manages the Fund's portfolio. Management fees are calculated daily at the annual rate of 0.70% of the Fund's average daily net assets up to $500 million; 0.65% of the next $500 million; 0.60% of the next $500 million; 0.55% of the next $500 million; and 0.45% on assets over $2 billion. For the six months ended April 30, 2017, the effective management fee (excluding waivers and/or assumption of expenses) was equivalent to 0.68% of the Fund's average daily net assets. 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 $49,221 in management fees, administrative costs and certain other reimbursements payable to PIM at April 30, 2017. 3. Transfer Agent Boston Financial Data Services serves as the transfer agent to the Fund at negotiated rates. Transfer agent fees and payables shown on the Statement of Operations and the Statement of Assets and Liabilities, respectively, include sub-transfer agent expenses incurred through the Fund's omnibus relationship contracts. In addition, the Fund reimbursed the transfer agent for out-of-pocket expenses incurred by the transfer agent related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the six months ended April 30, 2017, such out-of-pocket expenses by class of shares were as follows: -------------------------------------------------------------------------------- Shareholder Communications: -------------------------------------------------------------------------------- Class A $ 16,468 Class C 9,799 Class Y 8,086 -------------------------------------------------------------------------------- Total $ 34,353 ================================================================================ 62 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 4. Distribution Plan The Fund has adopted a distribution plan (the 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 $23,167 in distribution fees payable to PFD at April 30, 2017. In addition, redemptions of each class of shares (except Class Y and Class Z 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 or Class Z shares. Proceeds from the CDSCs are paid to PFD. For the six months ended April 30, 2017, CDSCs in the amount of $4,200 were paid to PFD. 5. 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 which the Fund participated until February 9, 2016 was in the amount of $240 million. The credit facility in which the fund participated until February 7, 2017 was in the amount of $220 million. Effective February 8, 2017, the Fund participated in a facility that is in the amount of $195 million. Under such facility, depending on the type of loan, interest on borrowings is payable at the London Interbank Offered Rate (LIBOR) plus 0.85% 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 or (c) 2% plus the overnight Eurodollar rate on the borrowing date. The Funds pay an annual commitment fee to participate in a credit facility. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 63 The commitment fee is allocated among participating Funds based on an allocation schedule set forth in the credit agreement. For the six months ended April 30, 2017, the Fund had no borrowings under the credit facility. 6. Forward Foreign Currency Contracts During the six months ended April 30, 2017, 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 contracts open during the six months ended April 30, 2017 was $(12,365,739). Open forward foreign currency contracts at April 30, 2017 were as follows: ------------------------------------------------------------------------------------------------------- Currency Currency In Exchange Settlement Unrealized Sold Deliver Purchased for Counterparty Date Appreciation -------------------------------------------------------------------------------------------------------- KRW (977,275,000) USD 877,858 Bank Of New York 6/30/17 $ 17,760 AUD (249,751) USD 190,958 State Street Bank 6/30/17 4,218 And Trust Co. -------------------------------------------------------------------------------------------------------- Total $ 21,978 ======================================================================================================== -------------------------------------------------------------------------------------------------------- Currency Currency In Exchange Settlement Unrealized Sold Deliver Purchased for Counterparty Date Depreciation -------------------------------------------------------------------------------------------------------- USD (1,606,749) PHP 80,225,000 Bank Of America NA 7/10/17 $ (12,880) INR (431,482,360) USD 6,620,366 Bank Of America NA 7/12/17 (23,079) GBP (1,126,974) USD 1,413,327 Citibank NA 5/19/17 (46,821) EURO (4,835,532) USD 5,286,977 Goldman Sachs 7/31/17 (6,661) International -------------------------------------------------------------------------------------------------------- Total $ (89,441) ======================================================================================================== AUD Australian Dollar EUR Euro GBP British Pound Sterling INR Indian Rupee KRW South Korean Won PHP Philippine Peso 64 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 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 Over the Counter (OTC) derivatives and typically contains, among other things, close-out and set-off provisions which apply upon the occurrence of an event of default and/or a 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 each specific ISDA of each 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 "Restricted cash." 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 not been offset on the Statement of Assets and Liabilities. The following charts show gross assets and liabilities of the Fund as of April, 30 2017. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 65 -------------------------------------------------------------------------------------------------------------- Derivative Assets Derivatives Non-Cash Cash Net Amount Subject to Master Available for Collateral Collateral of Derivative Counterparty Netting Agreement Offset Received (a) Received (a) Assets (b) -------------------------------------------------------------------------------------------------------------- Bank of $ -- $ -- $ -- $ -- $ -- America NA State Street 4,218 -- -- -- 4,218 Bank And Trust Co. Bank of 17,760 -- -- -- 17,760 New York Citibank NA -- -- -- -- -- Goldman -- -- -- -- -- Sachs International -------------------------------------------------------------------------------------------------------------- Total $ 21,978 $ -- $ -- $ -- $ 21,978 ============================================================================================================== -------------------------------------------------------------------------------------------------------------- Derivative Liabilities Derivatives Non-Cash Cash Net Amount Subject to Master Available for Collateral Collateral of Derivative Counterparty Netting Agreement Offset Pledged (a) Pledged (a) Liabilities(c) -------------------------------------------------------------------------------------------------------------- Bank of $ 35,959 $ -- $ -- $ -- $ 35,959 America NA State Street -- -- -- -- -- Bank And Trust Co. Bank of -- -- -- -- -- New York Citibank NA 46,821 -- -- -- 46,821 Goldman 6,661 -- -- -- 6,661 Sachs International -------------------------------------------------------------------------------------------------------------- Total $ 89,441 $ -- $ -- $ -- $ 89,441 ============================================================================================================== (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: The Fund's use of derivatives subjects it to the following risks: Interest rate risk relates to the fluctuations in the value of interest-bearing securities due to changes in the prevailing levels of market interest rates. Credit risk relates to the ability of the issuer of a financial instrument to make further principal or interest payments on an obligation or commitment that it has to the Fund. Foreign exchange rate risk relates to fluctuations in the value of an asset or liability due to changes in currency exchange rates. 66 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 Equity risk relates to the fluctuations in the value of financial instruments as a result of changes in market prices (other than those arising from interest rate risk or foreign exchange risk), whether caused by factors specific to an individual investment, its issuer, or all factors affecting all instruments traded in a market or market segment. Commodity risk relates to the risk that the value of a commodity or commodity index will fluctuate based on increases or decreases in the commodities market and factors specific to a particular industry or commodity. The fair value of open derivative instruments (not considered to be hedging instruments for accounting disclosure purposes) by risk exposure at April 30, 2017 was as follows: ------------------------------------------------------------------------------------------------- Foreign Statement Interest Credit Exchange Equity Commodity Assets and Liabilities Rate Risk Risk Rate Risk Risk Risk ------------------------------------------------------------------------------------------------- Assets Unrealized appreciation of forward foreign currency contracts $ -- $ -- $ 21,978 $ -- $ -- Unrealized appreciation of centrally cleared swap contracts -- 562,009 -- -- -- ------------------------------------------------------------------------------------------------- Total Value $ -- $ 562,009 $ 21,978 $ -- $ -- ================================================================================================= Liabilities Unrealized depreciation of forward foreign currency contracts $ -- $ -- $ 89,441 $ -- $ -- ------------------------------------------------------------------------------------------------- Total Value $ -- $ -- $ 89,441 $ -- $ -- ================================================================================================= Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 67 The effect of derivative instruments (not considered to be hedging instruments for accounting disclosure purposes) on the Statement of Operations by risk exposure at April 30, 2017 was as follows: ------------------------------------------------------------------------------------------------- Foreign Statement of Interest Credit Exchange Equity Commodity Operations Rate Risk Risk Rate Risk Risk Risk ------------------------------------------------------------------------------------------------- Net realized gain (loss) on Swap contracts $ -- $ 95,758 $ -- $ -- $ -- Forward foreign currency contracts* -- -- (43,649) -- -- ------------------------------------------------------------------------------------------------- Total Value $ -- $ 95,758 $ (43,649) $ -- $ -- ================================================================================================= Change in net unrealized appreciation (depreciation) on Swap contracts $ -- $269,629 $ -- $ -- $ -- Forward foreign currency contracts* -- -- (371,528) -- -- ------------------------------------------------------------------------------------------------- Total Value $ -- $269,629 $(371,528) $ -- $ -- ================================================================================================= * Included in the amount shown on the Statement of Operations as foward foreign currency contracts and other assets and liabilities denominated in foreign currencies. 68 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 Additional Information Pioneer Investment Management, Inc. (the "Adviser"), the Fund"s investment adviser, is currently an indirect, wholly owned subsidiary of UniCredit S.p.A. ("UniCredit"). On December 12, 2016, UniCredit announced that it has entered into a binding agreement for the sale of its Pioneer Investments business, which includes the Adviser, to Amundi (the "Transaction"). Amundi is headquartered in Paris, France, and, as of September 30, 2016, had more than $1.1 trillion in assets under management worldwide. The closing of the Transaction is expected to happen in 2017, subject to certain regulatory and antitrust approvals, and other conditions. Under the Investment Company Act of 1940, the closing of the Transaction will cause the Fund's current investment advisory agreement with the Adviser to terminate. Accordingly, the Fund's Board of Trustees has approved a new investment advisory agreement for the Fund, which has been submitted to the shareholders of the Fund for their approval. Change in Independent Registered Public Accounting Firm Deloitte & Touche LLP, the Fund's independent registered public accounting firm, has informed the Board that it will no longer be independent with respect to the Fund upon the completion of the Transaction and, accordingly, that it intends to resign as the Fund's independent registered public accounting firm upon the completion of the Transaction. The Board will engage a new independent registered public accounting firm for the Fund upon the completion of the Transaction. During the periods that Deloitte & Touche LLP has served as the Fund's independent registered public accounting firm, including the Fund's two most recent fiscal years, Deloitte & Touche LLP's reports on the Fund's financial statements have not contained an adverse opinion or disclaimer of opinion and have not been qualified or modified as to uncertainty, audit scope or accounting principles. Further, there have been no disagreements with Deloitte & Touche LLP on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which, if not resolved to the satisfaction of Deloitte & Touche LLP, would have caused Deloitte & Touche LLP to make reference to the subject matter of the disagreement in connection with its report on the financial statements. In addition, there have been no reportable events of the kind described in Item 304(a)(1)(v) of Regulation S-K under the Securities Exchange Act of 1934. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 69 Approval of New and Interim Management Agreements Pioneer Investment Management, Inc. (PIM) serves as the investment adviser to Pioneer Global High Yield Fund (the Fund) pursuant to an investment management agreement between PIM and the Fund. PIM is the principal U.S. asset management business of Pioneer Investments, a group of companies owned by Pioneer Global Asset Management S.p.A. ("PGAM"). PGAM is a wholly-owned subsidiary of UniCredit S.p.A. ("UniCredit"). UniCredit and PGAM have entered into a binding agreement to sell Pioneer Investments, including PIM, to Amundi (the "Transaction"). Upon the consummation of the transaction, PIM will become an indirect wholly-owned subsidiary of Amundi and Amundi's wholly-owned subsidiary, Amundi USA, Inc. The closing of the Transaction is expected to happen in 2017. Under the Investment Company Act of 1940, the Fund's current investment management agreement (the "Current Management Agreement") will terminate automatically upon the consummation of the Transaction. In order for PIM to continue to manage the Fund after the consummation of the Transaction, the Trustees and shareholders of the Fund must approve a new investment management agreement for the Fund (the "New Management Agreement"). As discussed below, the Board of Trustees of the Fund approved the New Management Agreement at a meeting held on March 6-7, 2017. The New Management Agreement has been submitted to the shareholders of the Fund for their approval at a meeting to be held on June 13, 2017. If the shareholders of the Fund do not approve the New Management Agreement and the Transaction is completed, an interim investment management agreement between PIM and the Fund (the "Interim Management Agreement") will take effect upon the closing of the Transaction. The Board of Trustees of the Fund also approved the Interim Management Agreement at the March 6-7, 2017 meeting. Board Evaluation of the New and Interim Management Agreements The Board evaluated the Transaction and the New Management Agreement and Interim Management Agreement for the Fund. In connection with their evaluation of the Transaction and the New Management Agreement for the Fund, the Trustees requested such information as they deemed reasonably necessary, including: (a) the structure of the Transaction and the strategy underlying the Transaction; (b) the anticipated benefits of the Transaction to the Fund and its shareholders; (c) the post-Transaction plans for PIM, including Amundi's plans for integration of Pioneer Investments and PIM with its existing asset management businesses and plans for the future development 70 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 of PIM; (d) the effect of the Transaction on the ongoing services provided to the Fund, including the need to select a new independent registered public accounting firm for the Fund, and any plans to modify the operations of the Fund; (e) the stability and continuity of PIM's management and key employees, including compensation and benefits to PIM's key employees, and retention plans and incentive plan structure; (f) the post-Transaction indebtedness and financial resources of PIM; (g) Amundi's legal and operational structure, its principal shareholders and senior management, its investment management, risk management, administrative, legal and compliance functions; (h) certain regulatory matters relating to Amundi's affiliates; and (i) Amundi's commitment to the United States, including the role of PIM in the larger Amundi business. The Trustees also requested and obtained the following information in connection with their evaluation of the Transaction and the New Management Agreement for the Fund: (i) memoranda provided by Fund counsel that summarized the legal standards and other considerations that are relevant to the Trustees in their deliberations regarding the New Management Agreement; (ii) the qualifications of the investment management teams for the Fund, as well as the level of investment by the Fund's portfolio managers in the Fund; (iii) the Fund's management fees and total expense ratios, the financial statements of PIM and its pre- and post-Transaction parent companies, profitability analyses from PIM, and analyses from PIM as to possible economies of scale; (iv) the profitability of the institutional business of PIM and PIM's affiliate, Pioneer Institutional Asset Management, Inc. ("PIAM") as compared to that of PIM's fund management business; and (v) the differences between the fees and expenses of the Fund and the fees and expenses of PIM's and PIAM's institutional accounts, as well as the different services provided by Adviser to the Fund and by PIM and PIAM to the institutional accounts. In addition, the Trustees considered the information provided at regularly scheduled meetings throughout the year regarding the Fund's performance and risk attributes, including through meetings with investment management personnel, and took into account other information related to the Fund provided to the Trustees at regularly scheduled meetings. The Trustees also considered information they had received in their review of the continuance of the Current Management Agreement for the Fund in September 2016. At meetings held on January 9, 2017 and January 10, 2017, the Trustees met with representatives of Amundi and PGAM, including separate meetings of the Trustees who are not "interested persons" of the Fund Complex ("Independent Trustees") and counsel with representatives of Amundi and PGAM, and subsequently with representatives of Amundi. In those meetings, they received an extensive presentation from the representatives of Amundi, Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 71 including the chief executive officer of Amundi, describing Amundi's background and history, its global asset management activities, the growth of its business, and its status as the largest asset management firm in Europe and one of the largest globally; its capital structure and financial resources, including information as to the financing of the Transaction; its principal investors, including its majority investor Credit Agricole S.A., and Credit Agricole's long-term commitment to the asset management business; the philosophy and strategy underlying the Transaction and the complementarity of Amundi's and Pioneer Investments' respective asset management businesses; Amundi's various operating and investment committees and how they would likely interact with PIM; the proposed integration process, including the progress to date and the establishment of various integration work streams; Amundi's plans for management of PIM; Amundi's philosophy as to compensation of key employees and its general intentions with respect to incentive plans for key employees of PIM; Amundi's preliminary plans to achieve cost and other synergies; and opportunities to further develop the business of PIM and PIAM, including in the area of institutional asset management, and how that would benefit shareholders of the Pioneer Funds. In those meetings, the representatives of Amundi confirmed their intention that the Chief Executive Officer and Chief Investment Officer of PIM would remain in their current positions, and confirmed that they do not currently foresee major changes in the day-to-day investment management operations of PIM with respect to the Fund as a direct result of the Transaction. They discussed incentive arrangements for key personnel that would continue after the closing of the Transaction and their plans to establish a new long-term incentive plan following the closing. They also generally discussed ways in which PIM could potentially draw on the expanded global resources of Amundi post-Transaction. At those meetings, the Independent Trustees identified certain areas to which they requested further information, including as to trading and execution of securities transactions, research and portfolio management and potential changes in investment process, particularly where asset classes managed by PIM would overlap with asset classes managed by Amundi, the continued availability of resources currently at Pioneer Investments or elsewhere within Amundi to assist in management of certain Funds, and any anticipated significant changes in operations. The Independent Trustees considered the uncertainty as to whether the Fund's independent registered public accounting firm could continue to act in that capacity after the closing of the Transaction. The Independent Trustees also met with counsel to review the information they had received to date and to discuss next steps. 72 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 Subsequently, the Trustees received further information from Amundi, including written responses to questions raised by the Independent Trustees, and received from PIM the information requested of it. The Independent Trustees reviewed the information provided with counsel at telephonic meetings held on February 16, 2017 and February 27, 2017. The Trustees held a special in-person Board meeting on March 6-7, 2017 for further consideration of the New Management Agreements, the Interim Management Agreements and the Transaction. The Trustees met again with senior executives of Amundi at the March 6-7, 2017 meeting. At the March 6-7, 2017 meeting, based on their evaluation of the information provided by PIM and Amundi, the Trustees including the Independent Trustees voting separately, approved the New Management Agreement and the Interim Management Agreement for the Fund. In considering the New Management Agreement for the Fund, the Trustees considered various factors that they determined were relevant, including the factors described below. The Trustees did not identify any single factor as the controlling factor in their determinations. The Trustees considered the same factors with respect to the Interim Management Agreement for the Fund. Nature, Extent and Quality of Services The Trustees considered the nature, extent and quality of the services that had been provided by PIM to the Fund and that are expected to be provided by PIM to the Fund following the consummation of the Transaction. The Trustees reviewed the terms of the New Management Agreement, and noted that such terms are substantially similar to the terms of the Current Management Agreement, except for different execution dates, effective dates and termination dates. The Trustees reviewed PIM's investment approach for the Fund and its research process. The Trustees considered the resources of PIM and the personnel of PIM who provide investment management services to the Fund. They also reviewed the amount of non-investment resources and personnel of PIM that are involved in PIM's services to the Fund, including PIM's compliance and legal resources and personnel. The Trustees noted the substantial attention and high priority given by PIM's senior management to the Pioneer Fund complex. The Trustees considered that PIM supervises and monitors the performance of the Fund's service providers and provides the Fund with personnel (including Fund officers) and other resources that are necessary for the Fund's business management and operations and that PIM would continue to provide those investment management and research services and resources to the Fund following the consummation of the Transaction. The Trustees also considered that, as administrator, PIM would continue to be responsible for the Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 73 administration of the Fund's business and other affairs. The Trustees considered the fees to be paid to PIM for the provision of administration services. The Trustees considered that Deloitte & Touche LLP has informed the Board that it will no longer be independent with respect to the Fund upon the completion of the Transaction and, accordingly, that it will be necessary for the Board to engage a new independent registered public accounting firm for the Fund. The Trustees considered that the Transaction is not expected to have a material adverse impact on the nature, scope and overall quality of services provided to the Fund and its shareholders, including investment management, risk management, administrative, compliance, legal and other services, as a result of the Transaction. In that regard, the Trustees considered that Amundi is one of the largest asset managers globally, and that PIM may have access to additional research and portfolio management capabilities as a result of the Transaction and that PIM, as part of Amundi, is expected to have an enhanced global presence that may contribute to an increase in the overall scale and resources of PIM. Furthermore, in considering whether the Transaction would be expected to have a material adverse impact on the nature, scope and overall quality of services provided to the Fund and its shareholders, the Trustees considered the statements by representatives of Amundi that they expect the Chief Executive Officer and Chief Investment Officer of PIM to remain in their current positions and that they do not currently foresee major changes in the day-to-day investment management operations of PIM as a direct result of the Transaction, or the risk management, legal or compliance services provided by PIM, with respect to the Fund. They further considered the current incentive arrangements for key personnel of PIM that would continue after the closing of the Transaction. They also noted Amundi's stated intention to establish a new long-term incentive plan following the closing. The Trustees also took into account their experience in evaluating the proposed combination of Pioneer Investments and Santander Asset Management, which was announced in September, 2014 and abandoned in July, 2016. In light of, among other things, this experience, the Trustees determined that they were not able to identify any realistic alternatives to approving the New Management Agreement that would provide the level of services to the Fund and its shareholders that are expected to be provided by PIM after the closing of the Transaction. 74 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 Based on these considerations, the Trustees concluded that the nature, extent and quality of services that PIM would continue to provide to the Fund under the New Management Agreement would be satisfactory and consistent with the terms of the New Management Agreement. Performance of the Fund In considering the Fund's performance, the Trustees regularly reviewed and discussed throughout the year data prepared by PIM and information comparing the Fund's performance with the performance of its peer group of funds, as classified by each of Morningstar, Inc. (Morningstar) and Lipper, and the performance of the Fund's benchmark index. They also discussed the Fund's performance with PIM on a regular basis. The Trustees discussed the Fund's performance with PIM on a more frequent basis in light of the Fund's unfavorable performance compared to its benchmark index and peers over certain periods. The Trustees noted PIM's explanation for the Fund's relative performance, including the extent to which its peer group of funds are invested in U.S. high yield securities. The Trustees also noted the steps taken by PIM to address the Fund's performance, including enhancing the investment process used for the Fund. The Trustees' regular reviews and discussions were factored into the Trustees' deliberations concerning the approval of the New Management Agreement. Management Fee and Expenses The Trustees noted that the stated management fees to be paid by the Fund are identical under the Current Management Agreement and the New Management Agreement. The Trustees considered information showing the fees and expenses of the Fund in comparison to the management fees and expense ratios of its peer group of funds as classified by Morningstar and also to the expense ratios of a peer group of funds selected on the basis of criteria determined by the Independent Trustees for this purpose using data provided by Strategic Insight Mutual Fund Research and Consulting, LLC (Strategic Insight), an independent third party. In all quintile rankings referred to below, first quintile is most favorable to the Fund's shareowners. To the extent applicable, the Trustees also considered the impact of transfer agency, sub-transfer agency, and other non-management fee expenses on the expense ratios of the Fund. The Trustees noted that they separately review the Fund's transfer agency, sub-transfer agency and intermediary arrangements and that the results of the most recent such review were considered in the consideration of the Fund's expense ratio. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 75 The Trustees considered that the Fund's management fee as of September 30, 2016 was in the fourth quintile relative to the management fees paid by other funds in its Morningstar category for the comparable period. The Trustees considered that the Fund's management fee was approximately four basis points higher than the median management fee paid by other funds in its Morningstar category. The Trustees also considered the breakpoints in the management fee schedule and the reduced fee rates above certain asset levels. The Trustees considered that the expense ratio of the Fund's Class A shares as of September 30, 2016 was in the fifth quintile relative to its Morningstar category and in the fourth quintile relative to its Strategic Insight peer group, in each case for the comparable period. The Trustees considered that the expense ratio of the Fund's Class A shares was approximately two basis points higher than the median expense ratio paid by other funds in its Strategic Insight peer group. The Trustees considered that the expense ratio of the Fund's Class Y shares as of September 30, 2016 was in the fourth quintile relative to its Morningstar category and in the third quintile relative to its Strategic Insight peer group, in each case for the comparable period. The Trustees noted the impact of expenses relating to small accounts and omnibus accounts on transfer and sub-transfer agency expenses generally. The Trustees reviewed management fees charged by PIM and PIAM to institutional and other clients, including publicly offered European funds sponsored by PIM's affiliates, unaffiliated U.S. registered investment companies (in a sub-advisory capacity), and unaffiliated foreign and domestic separate accounts. The Trustees also considered PIM's costs in providing services to the Fund and PIM's and PIAM's costs in providing services to the other clients and considered the differences in management fees and profit margins for fund and non-fund services. In evaluating the fees associated with PIM's and PIAM's client accounts, the Trustees took into account the respective demands, resources and complexity associated with the Fund and other client accounts. The Trustees noted that in some instances the fee rates for those clients were lower than the management fee for the Fund and considered that, under both the Current Management Agreement and the New Management Agreement, PIM would perform additional services for the Fund that it does not provide to those other clients or services that are broader in scope, including oversight of the Fund's other service providers and activities related to compliance and the extensive regulatory and tax regimes to which the Fund is subject. The Trustees also considered the different risks associated with PIM's management of the Fund and PIM's and PIAM's management of the other client accounts. 76 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 The Trustees concluded that the management fee payable by the Fund to PIM was reasonable in relation to the nature and quality of the services to be provided by PIM. Profitability The Trustees considered information provided by PIM regarding the profitability of PIM with respect to the advisory services provided by PIM to the Fund, including the methodology used by PIM in allocating certain of its costs to the management of the Fund. The Trustees also considered PIM's profit margin in connection with the overall operation of the Fund. They further reviewed the financial results, including the profit margins, realized by PIM and PIAM from non-fund businesses. The Trustees considered PIM's profit margins with respect to the Fund in comparison to the limited industry data available and noted that the profitability of any adviser was affected by numerous factors, including its organizational structure and method for allocating expenses. The Trustees concluded that PIM's profitability with respect to the management of the Fund was not unreasonable. Economies of Scale The Trustees considered PIM's views relating to economies of scale in connection with the Pioneer Funds as fund assets grow and the extent to which any such economies of scale are shared with the Fund and Fund shareholders. The Trustees recognize that economies of scale are difficult to identify and quantify, and that, among other factors that may be relevant, are the following: fee levels, expense subsidization, investment by PIM in research and analytical capabilities and PIM's commitment and resource allocation to the Fund. The Trustees noted that profitability also may be an indicator of the availability of any economies of scale, although profitability may vary for other reasons including due to reductions in expenses. The Trustees concluded that economies of scale, if any, were being appropriately shared with the Fund. Other Benefits. The Trustees considered the other benefits that PIM enjoys from its relationship with the Fund. The Trustees considered the character and amount of fees paid or to be paid by the Fund, other than under the Current Management Agreement or the New Management Agreement, for services provided by PIM and its affiliates. The Trustees further considered the revenues and profitability of PIM's businesses other than the Fund business. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 77 To the extent applicable, the Trustees also considered the benefits to the Fund and to PIM and its affiliates from the use of "soft" commission dollars generated by the Fund to pay for research and brokerage services. The Trustees considered that following the completion of the Transaction, PIM will be the principal U.S. asset management business of Amundi, and that Amundi's worldwide asset management business will manage over $1.38 trillion in assets (including the Pioneer Funds). This may create opportunities for PIM, PIAM and Amundi that derive from PIM's relationships with the Fund, including Amundi's ability to market the services of PIM globally. The Trustees noted that PIM may have access to additional research capabilities as a result of the Transaction and Amundi's enhanced global presence that may contribute to an increase of the overall scale of PIM. The Trustees considered that PIM and the Fund are expected to receive reciprocal intangible benefits from the relationship, including mutual brand recognition and, for the Fund, direct and indirect access to the resources of a large global asset manager. The Trustees concluded that any such benefits received by PIM as a result of its relationship with the Fund were reasonable. Conclusion After consideration of the factors described above as well as other factors, the Trustees, including the Independent Trustees, concluded that the New Management Agreement and the Interim Management Agreement for the Fund, including the fees payable thereunder, were fair and reasonable and voted to approve the New Management Agreement and the Interim Management Agreement, and to recommend that shareholders approve the New Management Agreement. 78 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 Trustees, Officers and Service Providers Trustees Advisory Trustee Thomas J. Perna, Chairman Lorraine H. Monchak* David R. Bock Benjamin M. Friedman Officers Margaret B.W. Graham Lisa M. Jones, President and Chief Marguerite A. Piret Executive Officer Fred J. Ricciardi Mark E. Bradley, Treasurer and Kenneth J. Taubes Chief Financial Officer Christopher J. Kelley, Secretary and Chief Legal Officer Investment Adviser and Administrator Pioneer Investment Management, Inc. Custodian and Sub-Administrator Brown Brothers Harriman & Co. Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Morgan, Lewis & Bockius LLP Shareowner Services and Transfer Agent Boston Financial Data 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. * Ms. Monchak is a non-voting Advisory Trustee. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 79 This page is for your notes. 80 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 This page is for your notes. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 81 This page is for your notes. 82 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 This page is for your notes. Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 83 This page is for your notes. 84 Pioneer Global High Yield Fund | Semiannual Report | 4/30/17 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: -------------------------------------------------------------------------------- Pioneer Funds 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) 2017 Pioneer Investments 19382-11-0617 Pioneer Global Multisector Income Fund -------------------------------------------------------------------------------- Semiannual Report | April 30, 2017 -------------------------------------------------------------------------------- Ticker Symbols: Class A PGABX Class C PGCBX Class Y PGYBX [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 42 Notes to Financial Statements 49 Approval of New and Interim Management Agreements 68 Trustees, Officers and Service Providers 76 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 1 President's Letter After an overall strong year for leading market indices in 2016, U.S. markets continued to generate positive returns over the first calendar quarter of 2017, with so-called "risk" assets, such as equities and credit-sensitive bonds, posting solid gains. In the first quarter, U.S. equities, as measured by the Standard & Poor's 500 Index, returned slightly more than 6%, while high-yield securities dominated bond market performance. The transfer of power in Washington, D.C. in January had little or no effect on the markets in the first quarter, as the post-election momentum we witnessed late in the fourth quarter of 2016 slowed only when oil prices slumped in March, due to both higher-than-expected inventories and concerns over whether OPEC (Organization of Petroleum Exporting Countries) would continue its supply cuts in June. Not even the Federal Reserve System's (the Fed's) highly anticipated rate hike during the month of March, its second in three months, nor Britain's trigger of Article 50 to begin the "Brexit" process caused any dramatic sell-off of risk assets. While U.S. gross domestic product (GDP) did slow in the first quarter, the expectation is for GDP to accelerate in the second quarter, with a strong consumer leading the way. Pioneer believes the U.S. economy may lead all developed nations in 2017, with GDP growth in excess of 2% for the year. President Trump has proposed decidedly pro-business policies, such as lower taxes, higher infrastructure spending, and less regulation, though we believe the economy may realize the benefits of those policies, if enacted, more so in 2018 than in 2017. Conversely, the effects of the President's potentially restrictive trade policies could offset some of the benefits of the pro-growth fiscal policies. Even so, we believe solid domestic employment figures should continue to support consumption and the housing market, and that stronger corporate profits and increased government spending may contribute to economic growth in 2018 and beyond. Increasing global Purchasing Manager Indices (PMIs) suggest that growth in global economies is also improving. (PMIs are used to measure the economic health of the manufacturing sector.) There are, as always, some risks to our outlook. First, the market already has priced in a good deal of the Trump economic reform platform, and that could lead to near-term disappointment if Congressional follow-through does not happen this year. The future of the Affordable Care Act is another potential concern. The first attempt to repeal/replace it failed, but any new proposed 2 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 legislation will undoubtedly have an effect on the health care sector, one of the largest segments of the U.S. economy. Geopolitical risks, of course, remain a potential headwind, given ongoing strife in the Middle East and renewed tensions on the Korean Peninsula. While our current outlook is generally optimistic, conditions can and often do change, and while passive investment strategies may have a place in one's overall portfolio, it is our view that all investment decisions are active choices. Throughout Pioneer's history, we have believed in the importance of active management. The active decisions to invest in equities or fixed-income securities are made by a team of experienced investment professionals focusing on identifying value across global markets using proprietary research, careful risk management, and a long-term perspective. 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. 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 the trust you have placed in us 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. April 30, 2017 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. Past performance is no guarantee of future results. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 3 Portfolio Management Discussion | 4/30/17 Global inflationary pressures appeared to tick higher during the six-month period ended April 30, 2017, leading to rising interest rates that undermined the prices of many fixed-income asset classes. In that environment, credit-sensitive securities less vulnerable to changes in interest rates tended to outperform higher-quality debt. In the following interview, Charles Melchreit and Paresh Upadhyaya discuss the factors that affected the performance of Pioneer Global Multisector Income Fund during the six-month period. Mr. Melchreit, Director of Investment-Grade Management, a senior vice president and a portfolio manager at Pioneer, Mr. Upadhyaya, a senior vice president and portfolio manager at Pioneer, Kenneth J. Taubes, Executive Vice President, Chief Investment Officer, U.S., and a portfolio manager at Pioneer, and Andrew Feltus, Director of High Yield and Bank Loans, 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 six-month period ended April 30, 2017? A Pioneer Global Multisector Income Fund's Class A shares returned 0.93% at net asset value during the six-month period ended April 30, 2017, while the Fund's benchmark, the Bloomberg Barclays Global Aggregate Bond Index (the Bloomberg Barclays Index), returned -1.63%. During the same period, the average return of the 219 mutual funds in Lipper's Global Income Funds category was 0.13%, and the average return of the 345 mutual funds in Morningstar's World Bond Funds category was 0.51%. Q How would you describe the market environment for global fixed-income investors during the six-month period ended April 30, 2017? A Growing indications of rising inflationary pressures and increasing interest rates were the dominant factors affecting global bond markets over the six months. The period saw broad recognition that emerging markets had begun to catch up with the improving growth trends in more developed economies, leading to a reflating of asset values - including for commodities and manufactured goods - as well as rising interest rates, which accompanied the inflation expectations. The upward movement of interest rates, in turn, tended to undermine the prices and performance of government debt and other higher-quality securities. Although also affected by rising interest rates, more credit-sensitive securities tended to hold up better. During the period, inflationary expectations appeared to move higher with the victory of Donald J. Trump in the U.S. presidential election in November 2016. Trump's victory, and the 4 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 overall Republican (GOP) election sweep, which maintained the GOP's control of both houses of Congress, led many investors to anticipate that economic activity - as well as inflationary pressures - would accelerate, as one of the Trump Campaign's main themes had been a pro-growth agenda calling for widespread tax cuts, decreased regulation, and increased infrastructure spending. In general, major central banks maintained highly stimulative monetary policies; the U.S. Federal Reserve (the Fed), however, increased the influential Federal funds rate twice during the six-month period. Investors, though, viewed the Fed's actions as cautious and restrained, and unlikely to undermine a global economic rebound. Even ever-present and heightened geopolitical risks - especially a seemingly more combative posture from the government of North Korea and continued violence and turmoil in Syria failed to undermine economic growth expectations. Although U.S. gross domestic product (GDP) growth slowed to just 0.7% (later revised to 1.2%) in the first quarter of 2017, the markets remained optimistic about future growth, pointing to continued improvement in the U.S. job market, as the unemployment rate fell to 4.4%. Q What were the primary factors that affected the Fund's benchmark-relative performance during the six-month period ended April 30, 2017? A The Fund generated positive absolute returns while also outperforming its benchmark, the Bloomberg Barclays Index, during the six-month period. Performance versus the benchmark benefited significantly from the portfolio's relatively short duration, which limited the negative effects of rising Treasury yields in the United States, as the 10-year U.S. Treasury yield moved up from 1.78% to 2.28% during the period. (Duration is a measure of the sensitivity of the price, or the value of principal, of a fixed-income investment to a change in interest rates, expressed as a number of years. Shorter-duration portfolios tend to be less sensitive to changes in interest rates than longer-duration portfolios.) As of April 30, 2017, the Fund's effective duration was 5.82 years, or about one year shorter than that of the Bloomberg Barclays Index. Our focus on holding more credit-sensitive debt in the Fund's portfolio also aided benchmark-relative performance during the period. The Fund's exposure to the credit sectors was significant, and an emphasis on high-yield debt, in particular - most notably, the Fund's overweight to U.S. high-yield corporate bonds - helped relative returns. The U.S. high-yield market, as reflected by the Bank of American Merrill Lynch U.S. High Yield Index, returned a strong 5.50% for the six months. At the end of the period, more than a quarter of the Fund's total investment portfolio was allocated to securities rated below BBB. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 5 The Fund's currency positioning was another overall positive contributor to benchmark-relative performance during the period, with an overweight to the U.S. dollar and underweights to the euro and the Japanese yen providing the biggest benefits. However, the Fund's exposure to the Mexican peso, which represented, on average, about 2% of the Fund's total investment portfolio, detracted from benchmark-relative returns as the currency weakened over the six months. Although we liked the economic fundamentals in Mexico, the nation's currency declined on international markets as investors worried about the potential effects of President Trump's trade and immigration policies. Q Did the Fund invest in any derivative securities during the six-month period ended April 30, 2017? If so, did the investments affect the Fund's benchmark-relative performance? A We invested the Fund in three types of derivative securities during the period: forward foreign currency transactions (forwards), Treasury futures, and credit default swaps. We invested in the forwards to help manage the risks of changes in relative currency values. The Treasury futures were used as part of our strategy to maintain a short-duration stance relative to the Fund's benchmark. Finally, we used the credit default swaps to increase the Fund's exposure to higher-yielding sectors, which were outperforming during the period. All of the derivative investments had positive effects on the Fund's benchmark-relative performance. Q Were there any changes in the Fund's yield, or distributions to shareholders, during the six months ended April 30, 2017? A No, the Fund's dividend* distributions to shareholders remained relatively stable during the six months. Q What is your investment outlook? A Going forward, we believe we will see a more challenging environment for investing in global bond markets. High-yield bonds, which have been outperforming for more than a year, have become more expensive as yield, or credit spreads, have tightened. Over the past six months, the spreads between Treasuries and high-yield bonds narrowed from 4.86% to 3.81%, while spreads for other credit-sensitive debt also have shrunk. (Credit spreads are commonly defined as the differences in yield between Treasuries and other types of fixed-income securities with similar maturities.) While we remain positive about global economic growth trends, we have reduced the Fund's exposure to credit risk. We believe some of the market's recent, optimistic expectations for an acceleration of GDP growth may be * Dividends are not guaranteed. 6 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 difficult to achieve, although growth in China and the rest of Asia still appears steady, while the results of recent elections in France and the Netherlands have tempered worries about the European economy. The greatest geopolitical risk at the present time appears to be the heightened tensions on the Korean Peninsula, and so in managing the Fund's currency positions, we have reduced exposure to the (South) Korean won, while increasing the portfolio's exposure to the Japanese yen, which we believe is well placed to benefit from improving growth in Asia. We expect the Fed may raise the Federal funds rate once or twice more in 2017; and, historically, periods of monetary tightening have led to increases in market volatility. Further, despite back-ups in Treasury yields in recent months, we think rates still could move higher, even accompanied by a widening of credit spreads and weaker performance by credit-sensitive debt. Considering the prospect for further interest-rate increases, we have maintained our short-duration policy, and the Fund's duration remains approximately one year shorter than that of the Bloomberg Barclays Index. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 7 Please refer to the Schedule of Investments on pages 17-41 for a full listing of Fund securities. All investments are subject to risk, including the possible loss of principal. In the past several years, financial markets have experienced increased volatility, depressed valuations, decreased liquidity and heightened uncertainty. These conditions may continue, recur, worsen or spread. Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, and economic and political conditions. 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 Fund may invest in mortgage-backed securities, which during times of fluctu- ating interest rates may increase or decrease more than other fixed-income securities. Mortgage-backed securities are also subject to pre-payments. The securities issued by U.S. Government-sponsored entities (e.g., FNMA, Freddie Mac) are neither guaranteed nor issued by the U.S. Government. Floating rate loans and similar instruments may be illiquid or less liquid than other instruments, and the value of any collateral can decline or be insufficient to meet the issuer's obligations. 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 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 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. These risks may increase share price volatility. 8 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 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 Multisector Income Fund | Semiannual Report | 4/30/17 9 Portfolio Summary | 4/30/17 Portfolio Diversification* -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] Foreign Government Bonds 35.5% U.S. Government Securities 23.2% International Corporate Bonds 17.3% U.S. Corporate Bonds 14.4% Collateralized Mortgage Obligations 2.8% Senior Secured Loans 2.1% Closed End Fund 2.1% Municipal Bonds 0.9% U.S. Preferred Stocks 0.6% Asset Backed Securities 0.3% Convertible Corporate Bonds 0.3% Convertible Preferred Stocks 0.3% Temporary Cash Investment 0.2% * Includes investments in insurance linked securities totaling 0.3% of total investment portfolio. Geographical Distribution -------------------------------------------------------------------------------- (As a percentage of long-term holdings based on country of domicile) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] United States 42.2% Other (individually less than 1%) 10.9% United Kingdom 7.1% Supranational 6.5% Canada 5.4% Japan 4.1% Australia 3.7% New Zealand 3.4% Argentina 3.3% Netherlands 3.1% Norway 2.4% France 2.2% Mexico 2.0% Ivory Coast 1.7% Romania 1.0% Egypt 1.0% 10 Largest Holdings (As a percentage of total long-term holdings)** -------------------------------------------------------------------------------- 1. New Zealand Government Bond, 5.5%, 4/15/23 3.38% --------------------------------------------------------------------------------- 2. Australia Government Bond, 4.75%, 4/21/27 3.08 --------------------------------------------------------------------------------- 3. International Finance Corp., 6.3%, 11/25/24 2.54 --------------------------------------------------------------------------------- 4. U.S. Treasury Bills, 5/11/17 2.41 --------------------------------------------------------------------------------- 5. Canadian Government Bond, 2.25%, 6/1/25 2.36 --------------------------------------------------------------------------------- 6. Canadian Government Bond, 1.75%, 9/1/19 2.26 --------------------------------------------------------------------------------- 7. Japan Government Ten Year Bond, 0.1%, 9/20/26 2.18 --------------------------------------------------------------------------------- 8. Pioneer ILS Interval Fund (h) 2.13 --------------------------------------------------------------------------------- 9. United Kingdom Gilt, 3.5%, 1/22/45 1.62 --------------------------------------------------------------------------------- 10. U.S. Treasury Notes, 2.25%, 2/15/27 1.40 --------------------------------------------------------------------------------- ** 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 securities listed. (h) Affiliated funds managed by Pioneer Investment Management, Inc. 10 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 Prices and Distributions | 4/30/17 Net Asset Value per Share -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Class 4/30/17 10/31/16 -------------------------------------------------------------------------------- A $10.56 $10.60 -------------------------------------------------------------------------------- C $10.59 $10.63 -------------------------------------------------------------------------------- Y $10.65 $10.69 -------------------------------------------------------------------------------- Distributions per Share: 11/1/16-4/30/17 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Tax Return Class Income Capital Gains Capital Gains of Capital -------------------------------------------------------------------------------------- A $0.1360 $-- $-- $-- -------------------------------------------------------------------------------------- C $0.0913 $-- $-- $-- -------------------------------------------------------------------------------------- Y $0.1503 $-- $-- $-- -------------------------------------------------------------------------------------- Index Definitions -------------------------------------------------------------------------------- The Bloomberg Barclays Global Aggregate Bond Index is an unmanaged index that provides a broad-based measure of the global investment-grade fixed-income markets. 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 Global Multisector Income Fund | Semiannual Report | 4/30/17 11 Performance Update | 4/30/17 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 Multisector Income Fund at public offering price during the periods shown, compared to that of the Bloomberg Barclays Global Aggregate Bond Index. Average Annual Total Returns (As of April 30, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays Net Public Global Asset Offering Aggregate Value Price Bond Period (NAV) (POP) Index -------------------------------------------------------------------------------- Life of Class (12/27/2007) 4.17% 3.66% 2.84% 5 years 2.37 1.43 0.37 1 year 3.72 -0.92 -2.10 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2017) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.69% 1.02% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global Bloomberg Barclays Multisector Income Fund Global Aggregate Bond Index 12/07 $ 9,550 $10,278 4/08 $ 9,982 $10,460 4/09 $ 9,646 $10,229 4/10 $11,020 $11,176 4/11 $12,140 $12,345 4/12 $12,509 $12,752 4/13 $13,281 $12,937 4/14 $13,162 $13,147 4/15 $13,421 $12,657 4/16 $13,556 $13,270 4/17 $14,061 $12,991 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 March 1, 2018, 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. Please refer to the financial highlights for a more current expense ratio. 12 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 Performance Update | 4/30/17 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 Multisector Income Fund during the periods shown, compared to that of the Bloomberg Barclays Global Aggregate Bond Index. Average Annual Total Returns (As of April 30, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays Global Aggregate If If Bond Period Held Redeemed Index -------------------------------------------------------------------------------- Life of Class (12/27/2007) 3.29% 3.29% 2.84% 5 years 1.48 1.48 0.37 1 year 2.83 2.83 -2.10 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2017) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.55% 1.92% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global Bloomberg Barclays Multisector Income Fund Global Aggregate Bond Index 12/07 $10,000 $10,278 4/08 $10,429 $10,460 4/09 $ 9,976 $10,229 4/10 $11,309 $11,176 4/11 $12,370 $12,345 4/12 $12,640 $12,752 4/13 $13,301 $12,937 4/14 $13,088 $13,147 4/15 $13,214 $12,657 4/16 $13,229 $13,270 4/17 $13,604 $12,991 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 March 1, 2018, 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. Please refer to the financial highlights for a more current expense ratio. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 13 Performance Update | 4/30/17 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 Multisector Income Fund during the periods shown, compared to that of the Bloomberg Barclays Global Aggregate Bond Index. Average Annual Total Returns (As of April 30, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays Net Global Asset Aggregate Value Bond Period (NAV) Index -------------------------------------------------------------------------------- Life of Class (12/27/2007) 4.41% 2.84% 5 years 2.62 0.37 1 year 3.87 -2.10 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2017) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 1.43% 0.77% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Global Bloomberg Barclays Multisector Income Fund Global Aggregate Bond Index 12/07 $5,000,000 $5,139,010 4/08 $5,227,750 $5,229,772 4/09 $5,054,129 $5,114,537 4/10 $5,790,645 $5,588,203 4/11 $6,382,956 $6,172,351 4/12 $6,610,228 $6,375,830 4/13 $7,031,849 $6,468,690 4/14 $6,994,963 $6,573,437 4/15 $7,150,790 $6,328,422 4/16 $7,242,780 $6,634,971 4/17 $7,523,103 $6,495,683 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 March 1, 2018, 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. Please refer to the financial highlights for a more current expense ratio. 14 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 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 Global Multisector Income Fund Based on actual returns from November 1, 2016, through April 30, 2017. ----------------------------------------------------------------------------------------------- Share Class A C Y ----------------------------------------------------------------------------------------------- Beginning Account Value on 11/1/16 $1,000.00 $1,000.00 $1,000.00 ----------------------------------------------------------------------------------------------- Ending Account Value (after expenses) $1,009.30 $1,005.00 $1,010.60 on 4/30/17 ----------------------------------------------------------------------------------------------- Expenses Paid During Period* $ 4.98 $ 9.05 $ 3.74 ----------------------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized net expense ratio of 1.00%, 1.82% and 0.75% for Class A, Class C and Class Y shares, respectively, multiplied by the average account value over the period, multiplied by 181/365 (to reflect the one-half year period). Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 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 Global Multisector Income Fund Based on a hypothetical 5% return per year before expenses, reflecting the period from November 1, 2016, through April 30, 2017. ------------------------------------------------------------------------------------------------ Share Class A C Y ------------------------------------------------------------------------------------------------ Beginning Account Value on 11/1/16 $1,000.00 $1,000.00 $1,000.00 ------------------------------------------------------------------------------------------------ Ending Account Value (after expenses) $1,019.84 $1,015.77 $1,021.08 on 4/30/17 ------------------------------------------------------------------------------------------------ Expenses Paid During Period* $ 5.01 $ 9.10 $ 3.76 ------------------------------------------------------------------------------------------------ * Expenses are equal to the Fund's annualized net expense ratio of 1.00%, 1.82% and 0.75% for Class A, Class C and Class Y shares, respectively, multiplied by the average account value over the period, multiplied by 181/365 (to reflect the one-half year period). 16 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 Schedule of Investments | 4/30/17 (unaudited) -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- CONVERTIBLE CORPORATE BONDS -- 0.3% CAPITAL GOODS -- 0.1% Electrical Components & Equipment -- 0.1% 56,000 General Cable Corp., 4.5%, 11/15/29 (Step) $ 43,855 ---------------- Total Capital Goods $ 43,855 -------------------------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 0.2% Internet Software & Services -- 0.2% 125,000 WebMD Health Corp., 2.625%, 6/15/23 (144A) $ 120,391 ---------------- Total Software & Services $ 120,391 -------------------------------------------------------------------------------------------------------------- TOTAL CONVERTIBLE CORPORATE BONDS (Cost $174,318) $ 164,246 -------------------------------------------------------------------------------------------------------------- PREFERRED STOCKS -- 0.0%+ DIVERSIFIED FINANCIALS -- 0.0%+ Consumer Finance -- 0.0%+ 231 6.82 GMAC Capital Trust I, Floating Rate Note, 2/15/40 $ 5,881 ---------------- Total Diversified Financials $ 5,881 -------------------------------------------------------------------------------------------------------------- TOTAL PREFERRED STOCKS (Cost $4,505) $ 5,881 -------------------------------------------------------------------------------------------------------------- CONVERTIBLE PREFERRED STOCKS -- 0.3% BANKS -- 0.3% Diversified Banks -- 0.3% 44 Bank of America Corp., 7.25%, (Perpetual) $ 53,390 80 Wells Fargo & Co., 7.5% (Perpetual) 101,600 ---------------- $ 154,990 ---------------- Total Banks $ 154,990 -------------------------------------------------------------------------------------------------------------- TOTAL CONVERTIBLE PREFERRED STOCKS (Cost $135,552) $ 154,990 -------------------------------------------------------------------------------------------------------------- ASSET BACKED SECURITIES -- 0.4% FOOD & STAPLES RETAILING -- 0.1% Food Retail -- 0.1% 46,560 CKE Restaurant Holdings, Inc., 4.474%, 3/20/43 (144A) $ 46,307 ---------------- Total Food & Staples Retailing $ 46,307 -------------------------------------------------------------------------------------------------------------- BANKS -- 0.2% Thrifts & Mortgage Finance -- 0.2% 46,035 Bear Stearns Asset Backed Securities Trust, 8.34361%, 10/25/29 (Step) $ 45,798 8,995 1.68 New Century Home Equity Loan Trust 2005-1, Floating Rate Note, 3/25/35 8,955 466 Structured Asset Securities Corp., 5.27%, 10/25/34 (Step) 478 The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 17 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 28,803 Terwin Mortgage Trust Series TMTS 2005-16HE, 4.26762%, 9/25/36 (Step) $ 29,141 ---------------- $ 84,372 ---------------- Total Banks $ 84,372 -------------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.1% Specialized Finance -- 0.1% 57,794 Domino's Pizza Master Issuer LLC, 5.216%, 1/27/42 (144A) $ 58,244 ---------------- Total Diversified Financials $ 58,244 -------------------------------------------------------------------------------------------------------------- TOTAL ASSET BACKED SECURITIES (Cost $188,534) $ 188,923 -------------------------------------------------------------------------------------------------------------- COLLATERALIZED MORTGAGE OBLIGATIONS -- 2.8% BANKS -- 2.4% Thrifts & Mortgage Finance -- 2.4% 56,417 3.50 Agate Bay Mortgage Trust 2015-1, Floating Rate Note, 1/25/45 (144A) $ 57,094 45,885 3.50 Agate Bay Mortgage Trust 2015-5, Floating Rate Note, 7/25/45 (144A) 46,436 2,195 1.44 Alternative Loan Trust 2003-14T1, Floating Rate Note, 8/25/18 1,806 76,983 Bayview Commercial Asset Trust 2007-2, 7/27/37 (Step) (144A) (d) -- 4,470 3.39 CHL Mortgage Pass-Through Trust 2003-56, Floating Rate Note, 12/25/33 4,511 100,000 Citigroup Commercial Mortgage Trust, 3.137%, 2/10/48 100,466 100,000 Citigroup Commercial Mortgage Trust, 4.81%, 3/10/47 107,560 50,000 COMM 2013-LC6 Mortgage Trust, 2.941%, 1/10/46 50,564 25,000 4.70 COMM 2015-CCRE25 Mortgage Trust, Floating Rate Note, 8/12/48 26,568 90,000 Commercial Mortgage Pass Through Certificates, 2.822%, 10/17/45 91,185 50,000 4.69 CSAIL 2016-C5 Commercial Mortgage Trust REMICS, Floating Rate Note, 11/15/48 50,983 100,000 CSAIL 2016-C7 Commercial Mortgage Trust, 3.502%, 11/15/49 101,955 37,948 3.50 CSMC Trust 2014-WIN2, Floating Rate Note, 10/25/44 (144A) 37,910 25,000 GS Mortgage Securities Corp. II, 3.682%, 2/10/46 (144A) 25,642 29,486 JP Morgan Chase Commercial Mortgage Securities Trust 2011-C5, 4.1712%, 8/15/46 31,435 The accompanying notes are an integral part of these financial statements. 18 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 75,000 JP Morgan Chase Commercial Mortgage Securities Trust 2012-LC9, 2.84%, 12/15/47 $ 75,598 100,000 1.91 JP Morgan Chase Commercial Mortgage Securities Trust 2014-INN, Floating Rate Note, 6/15/29 (144A) 100,063 5,493 JP Morgan Mortgage Trust 2004-S1, 5.0%, 9/25/34 5,615 50,000 JPMBB Commercial Mortgage Securities Trust 2014-C22 REMICS, 3.8012%, 9/15/47 52,281 80,288 Morgan Stanley Capital I Trust 2007-HQ13, 5.569%, 12/15/44 80,961 37,943 3.25 NRP Mortgage Trust 2013-1, Floating Rate Note, 7/25/43 (144A) 38,015 GBP 45,793 0.76 Paragon Secured Finance No 1 Plc, Floating Rate Note, 11/15/35 57,012 24,996 RAAC Series 2004-SP2 Trust, 6.0%, 1/25/32 25,033 1,071 1.53 RALI Series 2002-QS16 Trust, Floating Rate Note, 10/25/17 1,067 25,109 2.50 Sequoia Mortgage Trust 2013-4, Floating Rate Note, 4/27/43 24,345 31,298 3.50 Sequoia Mortgage Trust, Floating Rate Note, 9/25/42 31,728 ---------------- $ 1,225,833 ---------------- Total Banks $ 1,225,833 -------------------------------------------------------------------------------------------------------------- GOVERNMENT -- 0.4% Government -- 0.4% 7,322 Federal National Mortgage Association REMICS, 4.5%, 6/25/29 $ 7,806 45,000 5.36 FREMF Mortgage Trust 2010-K9 REMICS, Floating Rate Note, 9/25/45 (144A) 48,739 50,000 4.93 FREMF Mortgage Trust 2011-K702, Floating Rate Note, 4/25/44 (144A) 51,035 50,000 5.05 FREMF Mortgage Trust 2011-K703, Floating Rate Note, 7/25/44 (144A) 51,407 26,806 Government National Mortgage Association, 4.5%, 9/20/39 28,867 18,426 Government National Mortgage Association, 5.25%, 8/16/35 20,356 ---------------- $ 208,210 ---------------- Total Government $ 208,210 -------------------------------------------------------------------------------------------------------------- TOTAL COLLATERALIZED MORTGAGE OBLIGATIONS (Cost $1,457,476) $ 1,434,043 -------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 19 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- CORPORATE BONDS -- 29.8% ENERGY -- 4.7% Oil & Gas Drilling -- 0.2% 100,000 Rowan Companies, Inc., 4.75%, 1/15/24 $ 88,000 -------------------------------------------------------------------------------------------------------------- Integrated Oil & Gas -- 1.7% EUR 175,000 BP Capital Markets Plc, 1.373%, 3/3/22 $ 199,425 240,000 Petrobras Global Finance BV, 5.375%, 1/27/21 246,564 155,000 Petroleos Mexicanos, 3.5%, 1/30/23 147,963 EUR 200,000 4.50 Repsol International Finance BV, Floating Rate Note, 3/25/75 223,194 55,000 YPF SA, 8.5%, 3/23/21 (144A) 62,219 ---------------- $ 879,365 -------------------------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 0.8% 75,000 Antero Resources Corp., 5.625%, 6/1/23 $ 77,156 35,000 Canadian Natural Resources, Ltd., 6.25%, 3/15/38 39,731 65,000 Carrizo Oil & Gas, Inc., 7.5%, 9/15/20 66,950 100,000 Hilcorp Energy I LP, 5.75%, 10/1/25 (144A) 97,000 25,000 Newfield Exploration Co., 5.375%, 1/1/26 26,219 100,000 Range Resources Corp., 5.0%, 3/15/23 (144A) 99,000 ---------------- $ 406,056 -------------------------------------------------------------------------------------------------------------- Oil & Gas Refining & Marketing -- 0.2% 53,000 EnLink Midstream Partners LP, 4.4%, 4/1/24 $ 54,375 21,000 Valero Energy Corp., 9.375%, 3/15/19 23,773 ---------------- $ 78,148 -------------------------------------------------------------------------------------------------------------- Oil & Gas Storage & Transportation -- 1.8% 95,000 Boardwalk Pipelines LP, 4.95%, 12/15/24 $ 101,240 25,000 DCP Midstream Operating LP, 9.75%, 3/15/19 (144A) 28,312 55,000 Enbridge Energy Partners LP, 7.375%, 10/15/45 70,472 100,000 Energy Transfer Equity LP, 5.875%, 1/15/24 107,750 125,000 Kinder Morgan, Inc. Delaware, 5.55%, 6/1/45 132,398 40,000 MPLX LP, 4.875%, 12/1/24 42,772 75,000 Plains All American Pipeline LP, 4.65%, 10/15/25 78,684 60,000 Sabine Pass Liquefaction LLC, 5.0%, 3/15/27 (144A) 63,325 25,000 Spectra Energy Capital LLC, 6.2%, 4/15/18 26,009 10,000 Spectra Energy Capital LLC, 6.75%, 7/15/18 10,510 60,000 Sunoco Logistics Partners Operations LP, 6.1%, 2/15/42 63,635 75,000 The Williams Companies, Inc., 5.75%, 6/24/44 77,625 13,000 The Williams Companies, Inc., 7.75%, 6/15/31 15,405 100,000 TransCanada PipeLines, Ltd., 1.875%, 1/12/18 100,124 The accompanying notes are an integral part of these financial statements. 20 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- Oil & Gas Storage & Transportation -- (continued) 15,000 Williams Partners LP, 5.1%, 9/15/45 $ 15,299 ---------------- $ 933,560 ---------------- Total Energy $ 2,385,129 -------------------------------------------------------------------------------------------------------------- MATERIALS -- 1.1% Diversified Chemicals -- 0.2% 85,000 CF Industries, Inc., 3.45%, 6/1/23 $ 79,262 -------------------------------------------------------------------------------------------------------------- Fertilizers & Agricultural Chemicals -- 0.2% 105,000 Agrium, Inc., 5.25%, 1/15/45 $ 116,242 -------------------------------------------------------------------------------------------------------------- Construction Materials -- 0.3% EUR 125,000 CRH Finance DAC, 3.125%, 4/3/23 $ 154,591 -------------------------------------------------------------------------------------------------------------- Paper Packaging -- 0.3% 50,000 International Paper Co., 4.8%, 6/15/44 $ 51,141 5,000 International Paper Co., 6.0%, 11/15/41 6,018 EUR 100,000 SIG Combibloc Holdings SCA, 7.75%, 2/15/23 (144A) 116,820 ---------------- $ 173,979 -------------------------------------------------------------------------------------------------------------- Copper -- 0.1% 35,000 Freeport-McMoRan, Inc., 6.75%, 2/1/22 (144A) $ 36,531 ---------------- Total Materials $ 560,605 -------------------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 0.8% Aerospace & Defense -- 0.4% 50,000 Embraer Netherlands Finance BV, 5.4%, 2/1/27 $ 52,000 65,000 Rockwell Collins, 3.2%, 3/15/24 65,740 EUR 100,000 TA MFG., Ltd., 3.625%, 4/15/23 111,614 ---------------- $ 229,354 -------------------------------------------------------------------------------------------------------------- Building Products -- 0.3% 30,000 Masco Corp., 4.375%, 4/1/26 $ 31,728 25,000 Masco Corp., 5.95%, 3/15/22 28,353 35,000 Owens Corning, 3.4%, 8/15/26 34,083 35,000 Owens Corning, 4.2%, 12/1/24 36,373 30,000 Standard Industries, Inc., 5.375%, 11/15/24 (144A) 31,275 ---------------- $ 161,812 -------------------------------------------------------------------------------------------------------------- Trading Companies & Distributors -- 0.1% 40,000 GATX Corp., 6.0%, 2/15/18 $ 41,290 ---------------- Total Capital Goods $ 432,456 -------------------------------------------------------------------------------------------------------------- TRANSPORTATION -- 0.5% Airlines -- 0.0%+ 15,000 Delta Air Lines, 2.875%, 3/13/20 $ 15,134 The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 21 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- Airlines -- (continued) 6,702 Delta Air Lines 2010-2 Class A Pass Through Trust, 4.95%, 5/23/19 $ 6,983 ---------------- $ 22,117 -------------------------------------------------------------------------------------------------------------- Marine -- 0.4% 200,000 Pelabuhan Indonesia II PT, 4.25%, 5/5/25 (144A) $ 201,060 -------------------------------------------------------------------------------------------------------------- Railroads -- 0.1% 25,000 Burlington Northern Santa Fe LLC, 5.75%, 3/15/18 $ 25,926 ---------------- Total Transportation $ 249,103 -------------------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.2% Automobile Manufacturers -- 0.2% 35,000 Ford Motor Co., 4.346%, 12/8/26 $ 35,855 35,000 General Motors Co., 6.6%, 4/1/36 40,346 ---------------- $ 76,201 ---------------- Total Automobiles & Components $ 76,201 -------------------------------------------------------------------------------------------------------------- CONSUMER SERVICES -- 0.3% Casinos & Gaming -- 0.2% 25,000 International Game Technology, 7.5%, 6/15/19 $ 27,469 50,000 Scientific Games International, Inc., 10.0%, 12/1/22 54,250 ---------------- $ 81,719 -------------------------------------------------------------------------------------------------------------- Education Services -- 0.1% 75,000 Tufts University, 5.017%, 4/15/12 $ 75,388 ---------------- Total Consumer Services $ 157,107 -------------------------------------------------------------------------------------------------------------- MEDIA -- 0.8% Cable & Satellite -- 0.6% 100,000 Charter Communications Operating LLC, 6.384%, 10/23/35 $ 114,607 EUR 150,000 Sky Plc, 1.5%, 9/15/21 169,881 25,000 Sky Plc, 6.1%, 2/15/18 (144A) 25,826 ---------------- $ 310,314 -------------------------------------------------------------------------------------------------------------- Movies & Entertainment -- 0.2% EUR 100,000 WMG Acquisition Corp., 4.125%, 11/1/24 (144A) $ 114,441 ---------------- Total Media $ 424,755 -------------------------------------------------------------------------------------------------------------- RETAILING -- 0.1% Internet Retail -- 0.1% 50,000 Expedia, Inc., 5.95%, 8/15/20 $ 54,937 ---------------- Total Retailing $ 54,937 -------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 22 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- FOOD & STAPLES RETAILING -- 0.0%+ Drug Retail -- 0.0%+ 12,432 CVS Pass-Through Trust, 5.773%, 1/10/33 (144A) $ 14,003 ---------------- Total Food & Staples Retailing $ 14,003 -------------------------------------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 1.1% Brewers -- 0.1% 20,000 Anheuser-Busch InBev Worldwide, Inc., 7.75%, 1/15/19 $ 21,942 -------------------------------------------------------------------------------------------------------------- Packaged Foods & Meats -- 1.0% GBP 100,000 Boparan Finance Plc, 5.5%, 7/15/21 (144A) $ 129,500 70,000 Kraft Heinz Foods Co., 3.5%, 6/6/22 72,342 200,000 Marfrig Holdings Europe BV, 8.0%, 6/8/23 (144A) 212,248 90,000 Post Holdings, Inc., 5.0%, 8/15/26 (144A) 89,550 15,000 Post Holdings, Inc., 8.0%, 7/15/25 (144A) 17,062 ---------------- $ 520,702 ---------------- Total Food, Beverage & Tobacco $ 542,644 -------------------------------------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 0.4% Health Care Facilities -- 0.2% 70,000 CHS, 6.875%, 2/1/22 $ 57,925 50,000 Kindred Healthcare Inc., 6.375%, 4/15/22 48,312 ---------------- $ 106,237 -------------------------------------------------------------------------------------------------------------- Managed Health Care -- 0.2% 30,000 Centene Corp., 5.625%, 2/15/21 $ 31,538 25,000 Centene Corp., 6.125%, 2/15/24 26,938 20,000 Humana, Inc., 3.95%, 3/15/27 20,624 ---------------- $ 79,100 ---------------- Total Health Care Equipment & Services $ 185,337 -------------------------------------------------------------------------------------------------------------- PHARMACEUTICALS, BIOTECHNOLOGY & LIFE SCIENCES -- 0.3% Biotechnology -- 0.2% 80,000 AbbVie, Inc., 3.2%, 5/14/26 $ 77,963 -------------------------------------------------------------------------------------------------------------- Pharmaceuticals -- 0.1% EUR 100,000 Valeant Pharmaceuticals International, Inc., 4.5%, 5/15/23 $ 76,571 ---------------- Total Pharmaceuticals, Biotechnology & Life Sciences $ 154,534 -------------------------------------------------------------------------------------------------------------- BANKS -- 6.4% Diversified Banks -- 6.1% 200,000 Access Bank Plc, 10.5%, 10/19/21 (144A) $ 212,372 INR 2,100,000 Asian Development Bank, 6.2%, 10/6/26 32,335 INR 1,740,000 Asian Development Bank, 6.45%, 8/8/21 27,282 The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 23 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- Diversified Banks -- (continued) EUR 200,000 2.62 Barclays Plc, Floating Rate Note, 11/11/25 $ 222,801 EUR 150,000 BNP Paribas SA, 2.375%, 2/17/25 168,851 EUR 200,000 BPCE SA, 2.875%, 4/22/26 228,850 156,000 6.25 Citigroup, Inc., Floating Rate Note, (Perpetual) 169,845 50,000 5.90 Citigroup, Inc., Floating Rate Note, (Perpetual) 52,500 75,000 Cooperatieve Rabobank UA, 3.875%, 2/8/22 79,711 EUR 200,000 8.88 Erste Group Bank AG, Floating Rate Note, (Perpetual) 251,386 EUR 200,000 ING Group NV, 3.0%, 4/11/28 232,401 INR 700,000 Inter-American Development Bank, 6.0%, 9/5/17 10,870 NZD 505,000 International Bank for Reconstruction & Development, 3.5%, 1/22/21 352,735 NZD 45,000 International Bank for Reconstruction & Development, 4.625%, 10/6/21 32,725 AUD 185,000 International Bank for Reconstruction & Development, 5.75%, 10/21/19 150,576 INR 1,350,000 International Bank for Reconstruction & Development, 5.75%, 10/28/19 20,898 25,000 JPMorgan Chase & Co., 5.625%, 8/16/43 28,768 EUR 200,000 6.38 Lloyds Banking Group Plc, Floating Rate Note, (Perpetual) 232,368 100,000 Macquarie Bank, Ltd., 6.625%, 4/7/21 (144A) 113,276 200,000 8.00 Royal Bank of Scotland Group Plc, Floating Rate Note, (Perpetual) 207,500 50,000 4.50 Scotiabank Peru SAA, Floating Rate Note, 12/13/27 (144A) 51,250 EUR 200,000 UBS Group Funding Jersey, Ltd., 1.75%, 11/16/22 229,573 ---------------- $ 3,108,873 -------------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- 0.3% GBP 125,000 Nationwide Building Society, 3.0%, 5/6/26 $ 173,077 ---------------- Total Banks $ 3,281,950 -------------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 5.7% Other Diversified Financial Services -- 1.4% INR 11,500,000 European Investment Bank, 6%, 5/4/20 $ 178,704 IDR 2,440,000,000 European Investment Bank, 7.2%, 7/9/19 (144A) 184,094 NZD 100,000 JPMorgan Chase & Co., 4.25%, 11/2/18 69,714 90,000 6.75 JPMorgan Chase & Co., Floating Rate Note, (Perpetual) 101,520 200,000 Republic of Parguy, 4.7%, 3/27/27 (144A) 203,800 ---------------- $ 737,832 -------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 24 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- Specialized Finance -- 0.3% 56,000 Cantor Fitzgerald LP, 7.875%, 10/15/19 (144A) $ 61,300 EUR 100,000 Holcim Finance Luxembourg SA, 2.25%, 5/26/28 114,817 ---------------- $ 176,117 -------------------------------------------------------------------------------------------------------------- Consumer Finance -- 3.2% INR 81,420,000 International Finance Corp., 6.3%, 11/25/24 $ 1,265,742 INR 20,750,000 International Finance Corp., 8.25%, 6/10/21 344,941 ---------------- $ 1,610,683 -------------------------------------------------------------------------------------------------------------- Investment Banking & Brokerage -- 0.3% 75,000 Morgan Stanley, 4.1%, 5/22/23 $ 77,852 50,000 Morgan Stanley, 4.875%, 11/1/22 54,374 ---------------- $ 132,226 -------------------------------------------------------------------------------------------------------------- Diversified Capital Markets -- 0.5% EUR 200,000 7.75 Intesa Sanpaolo S.p.A., Floating Rate Note, (Perpetual) $ 233,174 10,000 Macquarie Group, Ltd., 6.0%, 1/14/20 (144A) 10,889 ---------------- $ 244,063 ---------------- Total Diversified Financials $ 2,900,921 -------------------------------------------------------------------------------------------------------------- INSURANCE -- 1.5% Insurance Brokers -- 0.2% 100,000 Brown & Brown, Inc., 4.2%, 9/15/24 $ 104,251 -------------------------------------------------------------------------------------------------------------- Life & Health Insurance -- 0.8% EUR 200,000 4.75 Credit Agricole Assurances SA, Floating Rate Note, 9/27/48 $ 233,174 45,000 Protective Life Corp., 7.375%, 10/15/19 50,440 100,000 5.88 Prudential Financial, Inc., Floating Rate Note, 9/15/42 110,480 ---------------- $ 394,094 -------------------------------------------------------------------------------------------------------------- Multi-line Insurance -- 0.2% 60,000 AXA SA, 8.6%, 12/15/30 $ 83,700 -------------------------------------------------------------------------------------------------------------- Property & Casualty Insurance -- 0.1% 35,000 Delphi Financial Group, Inc., 7.875%, 1/31/20 $ 39,638 -------------------------------------------------------------------------------------------------------------- Reinsurance -- 0.2% 30,000 Gullane Segregated Account (Artex SAC Ltd.), Variable Rate Note 11/30/20 (e) (f) $ 1,257 30,000 Gullane Segregated Account (Artex SAC Ltd.), Variable Rate Note 11/30/21 (e) (f) 30,513 30,000 Lorenz Re, Ltd., Variable Rate Notes, 3/31/18 (e) (f) 174 30,000 Lorenz Re, Ltd., Variable Rate Notes, 3/31/19 (e) (f) 1,680 30,000 Lorenz Re, Ltd., Variable Rate Notes, 3/31/20 (e) (f) 30,180 The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 25 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- Reinsurance -- (continued) 30,000 Pangaea Re, Series 2015-2, Principal at Risk Notes, 11/30/19 (e) (f) $ 2,421 50,000 Pangaea Re., Variable Rate Notes, 11/30/21 (e) (f) 51,375 30,000 Pangaea Re., Variable Rate Notes, 2/1/20 (e) (f) 4,170 JPY 2,513,320 Tralee Segregated Account (Artex), Variable Rate Note 7/15/17 (e) (f) 22,464 ---------------- $ 144,234 ---------------- Total Insurance $ 765,917 -------------------------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 0.1% Home Entertainment Software -- 0.1% 50,000 Activision Blizzard, Inc., 6.125%, 9/15/23 (144A) $ 54,250 ---------------- Total Software & Services $ 54,250 -------------------------------------------------------------------------------------------------------------- TECHNOLOGY HARDWARE & EQUIPMENT -- 0.3% Electronic Components -- 0.1% 41,000 Amphenol Corp., 3.2%, 4/1/24 $ 41,488 -------------------------------------------------------------------------------------------------------------- Electronic Manufacturing Services -- 0.2% 100,000 Flex, Ltd., 4.625%, 2/15/20 $ 105,160 ---------------- Total Technology Hardware & Equipment $ 146,648 -------------------------------------------------------------------------------------------------------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 0.2% Semiconductor Equipment -- 0.1% 25,000 Entegris, Inc., 6.0%, 4/1/22 (144A) $ 26,062 -------------------------------------------------------------------------------------------------------------- Semiconductors -- 0.1% 15,000 Broadcom Corp., 3.625%, 1/15/24 (144A) $ 15,218 55,000 Micron Technology, Inc., 5.25%, 8/1/23 (144A) 56,925 ---------------- $ 72,143 ---------------- Total Semiconductors & Semiconductor Equipment $ 98,205 -------------------------------------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES -- 1.8% Integrated Telecommunication Services -- 0.8% 25,000 AT&T, Inc., 3.95%, 1/15/25 $ 25,317 40,000 Frontier Communications Corp., 7.125%, 1/15/23 35,000 19,000 Frontier Communications Corp., 8.5%, 4/15/20 20,211 GBP 100,000 Koninklijke KPN NV, 5.0%, 11/18/26 154,087 EUR 125,000 5.00 Orange SA, Floating Rate Note, (Perpetual) 151,129 25,000 Unison Ground Lease Funding LLC, 2.981%, 3/16/43 (144A) 24,469 ---------------- $ 410,213 -------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 26 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- Wireless Telecommunication Services -- 1.0% 30,000 Crown Castle Towers LLC, 4.883%, 8/15/20 (144A) $ 31,990 200,000 Digicel, Ltd., 6.0%, 4/15/21 (144A) 190,000 200,000 MTN Mauritius Investment, Ltd., 6.5%, 10/13/26 (144A) 205,600 50,000 SBA Tower Trust, 2.877%, 7/15/21 (144A) 49,958 50,000 Sprint Corp., 7.25%, 9/15/21 54,688 ---------------- $ 532,236 ---------------- Total Telecommunication Services $ 942,449 -------------------------------------------------------------------------------------------------------------- UTILITIES -- 2.7% Electric Utilities -- 2.0% EUR 100,000 EDP Finance BV, 1.875%, 9/29/23 $ 111,820 100,000 Electricite de France SA, 6.0%, 1/22/14 (144A) 103,602 EUR 100,000 4.25 Electricite de France SA, Floating Rate Note, (Perpetual) 113,863 200,000 8.13 Enel S.p.A., Floating Rate Note, 9/24/73 (144A) 234,000 GBP 75,000 innogy Finance BV, 5.625%, 12/6/23 119,257 85,000 Nextera Energy, 3.55%, 5/1/27 85,546 70,000 Public Service Co. of New Mexico, 7.95%, 5/15/18 74,333 50,000 6.25 Southern California Edison Co., Floating Rate Note (Perpetual) 55,688 115,000 Talen Energy Supply LLC, 6.5%, 6/1/25 91,425 10,000 West Penn Power Co., 5.95%, 12/15/17 (144A) 10,250 ---------------- $ 999,784 -------------------------------------------------------------------------------------------------------------- Gas Utilities -- 0.5% 84,856 Nakilat, Inc., 6.267%, 12/31/33 (144A) $ 98,433 GBP 125,000 National Grid Gas Finance Plc, 2.125%, 9/22/28 158,946 ---------------- $ 257,379 -------------------------------------------------------------------------------------------------------------- Independent Power Producers & Energy Traders -- 0.2% 125,000 NRG Energy, Inc., 7.25%, 5/15/26 $ 127,812 ---------------- Total Utilities $ 1,384,975 -------------------------------------------------------------------------------------------------------------- REAL ESTATE -- 0.8% Diversified REIT -- 0.3% EUR 100,000 3.75 ATF Netherlands BV, Floating Rate Note, (Perpetual) $ 109,221 55,000 Essex Portfolio LP, 3.625%, 5/1/27 54,740 ---------------- $ 163,961 -------------------------------------------------------------------------------------------------------------- Office REIT -- 0.2% 25,000 Alexandria Real Estate Equities, Inc., 3.9%, 6/15/23 $ 25,726 40,000 Alexandria Real Estate Equities, Inc., 4.6%, 4/1/22 42,603 35,000 Highwoods Realty LP, 3.625%, 1/15/23 35,492 ---------------- $ 103,821 -------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 27 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- Residential REIT -- 0.1% 50,000 UDR, Inc., 4.0%, 10/1/25 $ 51,426 -------------------------------------------------------------------------------------------------------------- Specialized REIT -- 0.2% 100,000 Communications Sales & Leasing, Inc., 6.0%, 4/15/23 (144A) $ 104,063 ---------------- Total Real Estate $ 423,271 -------------------------------------------------------------------------------------------------------------- TOTAL CORPORATE BONDS (Cost $14,714,734) $ 15,235,397 -------------------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATIONS -- 22.7% 49,146 Fannie Mae, 3.0%, 1/1/47 $ 49,355 48,391 Fannie Mae, 3.0%, 10/1/46 48,368 68,275 Fannie Mae, 3.0%, 11/1/46 68,243 48,747 Fannie Mae, 3.0%, 2/1/43 48,965 31,424 Fannie Mae, 3.0%, 3/1/43 31,564 34,897 Fannie Mae, 3.0%, 3/1/47 34,880 27,203 Fannie Mae, 3.0%, 5/1/31 28,040 31,433 Fannie Mae, 3.0%, 5/1/43 31,574 36,372 Fannie Mae, 3.0%, 5/1/43 36,531 35,024 Fannie Mae, 3.0%, 6/1/45 35,140 24,172 Fannie Mae, 3.0%, 9/1/46 24,160 25,491 Fannie Mae, 3.5%, 1/1/46 26,235 39,651 Fannie Mae, 3.5%, 1/1/47 40,860 49,773 Fannie Mae, 3.5%, 1/1/47 51,226 49,535 Fannie Mae, 3.5%, 1/1/47 51,217 111,500 Fannie Mae, 3.5%, 10/1/45 114,895 73,205 Fannie Mae, 3.5%, 12/1/46 75,342 36,323 Fannie Mae, 3.5%, 2/1/29 37,990 99,323 Fannie Mae, 3.5%, 2/1/45 102,840 37,120 Fannie Mae, 3.5%, 2/1/45 38,375 124,315 Fannie Mae, 3.5%, 2/1/47 127,944 172,225 Fannie Mae, 3.5%, 5/1/44 177,751 220,000 Fannie Mae, 3.5%, 5/11/17 (TBA) 226,213 56,052 Fannie Mae, 3.5%, 6/1/42 57,938 24,765 Fannie Mae, 3.5%, 6/1/45 25,517 89,003 Fannie Mae, 3.5%, 7/1/46 91,602 49,974 Fannie Mae, 3.5%, 8/1/45 51,432 22,018 Fannie Mae, 3.5%, 8/1/45 22,661 33,600 Fannie Mae, 3.5%, 8/1/46 34,581 153,803 Fannie Mae, 3.5%, 9/1/42 158,903 68,899 Fannie Mae, 3.5%, 9/1/45 71,208 The accompanying notes are an integral part of these financial statements. 28 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATIONS -- (continued) 25,087 Fannie Mae, 3.5%, 9/1/45 $ 25,952 38,859 Fannie Mae, 3.5%, 9/1/46 39,993 96,683 Fannie Mae, 4.0%, 1/1/42 102,216 169,060 Fannie Mae, 4.0%, 1/1/47 178,232 44,031 Fannie Mae, 4.0%, 10/1/40 47,041 145,136 Fannie Mae, 4.0%, 10/1/43 153,771 21,486 Fannie Mae, 4.0%, 10/1/44 22,644 86,361 Fannie Mae, 4.0%, 10/1/45 91,018 48,865 Fannie Mae, 4.0%, 11/1/43 51,942 110,058 Fannie Mae, 4.0%, 11/1/44 115,993 117,994 Fannie Mae, 4.0%, 11/1/45 125,319 24,478 Fannie Mae, 4.0%, 11/1/46 25,798 24,773 Fannie Mae, 4.0%, 11/1/46 26,109 64,945 Fannie Mae, 4.0%, 12/1/45 68,447 19,509 Fannie Mae, 4.0%, 2/1/42 20,612 25,000 Fannie Mae, 4.0%, 4/1/47 26,456 44,935 Fannie Mae, 4.0%, 4/1/47 47,553 21,916 Fannie Mae, 4.0%, 5/1/46 23,098 48,939 Fannie Mae, 4.0%, 6/1/46 51,577 117,184 Fannie Mae, 4.0%, 7/1/46 123,503 47,221 Fannie Mae, 4.0%, 8/1/46 49,767 23,763 Fannie Mae, 4.0%, 8/1/46 25,044 8,728 Fannie Mae, 4.5%, 11/1/40 9,451 39,117 Fannie Mae, 4.5%, 11/1/43 42,108 17,423 Fannie Mae, 4.5%, 12/1/40 18,867 54,883 Fannie Mae, 4.5%, 2/1/44 59,121 44,824 Fannie Mae, 4.5%, 2/1/44 48,309 44,886 Fannie Mae, 4.5%, 2/1/47 48,378 17,303 Fannie Mae, 4.5%, 4/1/41 18,680 11,571 Fannie Mae, 4.5%, 5/1/41 12,574 46,135 Fannie Mae, 4.5%, 5/1/46 49,654 135,000 Fannie Mae, 4.5%, 5/11/17 (TBA) 145,230 18,710 Fannie Mae, 5.0%, 6/1/40 20,526 12,706 Fannie Mae, 5.5%, 10/1/35 14,166 18,061 Federal Home Loan Mortgage Corp., 3.0%, 1/1/43 18,145 24,880 Federal Home Loan Mortgage Corp., 3.0%, 12/1/46 24,862 33,231 Federal Home Loan Mortgage Corp., 3.0%, 2/1/43 33,379 73,883 Federal Home Loan Mortgage Corp., 3.0%, 2/1/47 73,831 66,243 Federal Home Loan Mortgage Corp., 3.0%, 4/1/43 66,559 41,259 Federal Home Loan Mortgage Corp., 3.0%, 4/1/43 41,456 The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 29 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATIONS -- (continued) 19,164 Federal Home Loan Mortgage Corp., 3.0%, 5/1/43 $ 19,242 35,000 Federal Home Loan Mortgage Corp., 3.0%, 5/11/17 (TBA) 34,951 15,264 Federal Home Loan Mortgage Corp., 3.0%, 9/1/42 15,332 24,195 Federal Home Loan Mortgage Corp., 3.0%, 9/1/46 24,178 19,993 Federal Home Loan Mortgage Corp., 3.5%, 10/1/42 20,668 124,968 Federal Home Loan Mortgage Corp., 3.5%, 11/1/45 128,695 126,501 Federal Home Loan Mortgage Corp., 3.5%, 12/1/44 130,189 74,094 Federal Home Loan Mortgage Corp., 3.5%, 12/1/46 76,597 21,255 Federal Home Loan Mortgage Corp., 3.5%, 3/1/46 21,874 50,000 Federal Home Loan Mortgage Corp., 3.5%, 5/11/17 (TBA) 51,412 103,015 Federal Home Loan Mortgage Corp., 3.5%, 6/1/45 106,494 88,848 Federal Home Loan Mortgage Corp., 3.5%, 7/1/46 91,930 37,949 Federal Home Loan Mortgage Corp., 3.5%, 8/1/46 39,146 123,499 Federal Home Loan Mortgage Corp., 3.5%, 8/1/46 127,574 98,655 Federal Home Loan Mortgage Corp., 3.5%, 8/1/46 101,895 128,130 Federal Home Loan Mortgage Corp., 4.0%, 1/1/44 135,009 24,753 Federal Home Loan Mortgage Corp., 4.0%, 1/1/46 26,078 14,240 Federal Home Loan Mortgage Corp., 4.0%, 12/1/44 15,003 37,847 Federal Home Loan Mortgage Corp., 4.0%, 2/1/44 40,071 38,817 Federal Home Loan Mortgage Corp., 4.0%, 2/1/46 40,895 25,146 Federal Home Loan Mortgage Corp., 4.0%, 3/1/46 26,492 119,576 Federal Home Loan Mortgage Corp., 4.0%, 4/1/47 125,979 50,000 Federal Home Loan Mortgage Corp., 4.0%, 4/1/47 52,868 25,000 Federal Home Loan Mortgage Corp., 4.0%, 4/1/47 26,434 50,000 Federal Home Loan Mortgage Corp., 4.0%, 4/1/47 52,677 25,000 Federal Home Loan Mortgage Corp., 4.0%, 4/1/47 26,434 222,435 Federal Home Loan Mortgage Corp., 4.0%, 5/1/44 234,344 22,933 Federal Home Loan Mortgage Corp., 4.0%, 6/1/46 24,161 49,358 Federal Home Loan Mortgage Corp., 4.5%, 6/1/41 53,273 31,625 Federal Home Loan Mortgage Corp., 5.0%, 10/1/38 34,550 7,645 Federal Home Loan Mortgage Corp., 5.0%, 12/1/39 8,432 4,904 Federal Home Loan Mortgage Corp., 5.0%, 5/1/39 5,391 27,109 Federal Home Loan Mortgage Corp., 5.0%, 9/1/38 29,611 18,411 Federal Home Loan Mortgage Corp., 6.0%, 8/1/37 20,865 18,535 Federal Home Loan Mortgage Corp., 6.5%, 1/1/38 21,421 42,792 Federal Home Loan Mortgage Corp., 6.5%, 4/1/38 47,525 27,784 Federal National Mortgage Association, 3.5%, 7/1/46 28,595 48,257 Federal National Mortgage Association, 5.0%, 8/1/31 53,201 The accompanying notes are an integral part of these financial statements. 30 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATIONS -- (continued) 120,335 Government National Mortgage Association I, 3.5%, 1/15/45 $ 125,066 11,513 Government National Mortgage Association I, 3.5%, 10/15/42 12,014 66,328 Government National Mortgage Association I, 3.5%, 11/15/41 69,087 37,455 Government National Mortgage Association I, 3.5%, 8/15/46 38,956 49,848 Government National Mortgage Association I, 4.0%, 4/15/45 52,766 73,627 Government National Mortgage Association I, 4.0%, 6/15/45 77,876 33,396 Government National Mortgage Association I, 4.5%, 1/15/40 36,413 13,342 Government National Mortgage Association I, 4.5%, 10/15/40 14,327 24,651 Government National Mortgage Association I, 4.5%, 7/15/41 26,420 27,857 Government National Mortgage Association I, 4.5%, 9/15/40 30,260 38,749 Government National Mortgage Association II, 3.0%, 9/20/46 39,315 124,104 Government National Mortgage Association II, 3.5%, 1/20/47 129,158 122,015 Government National Mortgage Association II, 3.5%, 11/20/46 126,984 75,000 Government National Mortgage Association II, 3.5%, 4/20/47 78,054 118,951 Government National Mortgage Association II, 4.0%, 1/20/47 125,947 169,674 Government National Mortgage Association II, 4.0%, 3/20/47 179,652 118,410 Government National Mortgage Association II, 4.5%, 1/20/47 126,527 26,752 Government National Mortgage Association II, 4.5%, 10/20/44 28,566 58,499 Government National Mortgage Association II, 4.5%, 11/20/44 62,465 119,209 Government National Mortgage Association II, 4.5%, 2/20/47 127,414 90,000 Government National Mortgage Association II, 4.5%, 4/20/47 96,206 39,522 Government National Mortgage Association II, 4.5%, 9/20/41 42,645 The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 31 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATIONS -- (continued) 1,200,000 U.S. Treasury Bills, 5/11/17 (c) $ 1,199,779 424,141 U.S. Treasury Inflation Indexed Bonds, 0.75%, 2/15/45 407,510 231,323 U.S. Treasury Inflation Indexed Bonds, 1.0%, 2/15/46 236,956 75,000 U.S. Treasury Notes, 1.125%, 7/31/21 73,131 375,000 U.S. Treasury Notes, 1.5%, 8/15/26 350,684 700,000 U.S. Treasury Notes, 1.625%, 5/15/26 663,250 700,000 U.S. Treasury Notes, 2.25%, 2/15/27 697,949 -------------------------------------------------------------------------------------------------------------- TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATIONS (Cost $11,496,229) $ 11,603,794 -------------------------------------------------------------------------------------------------------------- FOREIGN GOVERNMENT BONDS -- 35.9% 408,000 Africa Finance Corp., 4.375%, 4/29/20 (144A) $ 422,231 100,000 Argentina, Government Bond, 6.875%, 6/26/27 105,650 300,000 Argentina, Government Bond, 7.5%, 4/22/26 328,650 AUD 1,725,000 Australia Government Bond, 4.75%, 4/21/27 1,535,449 EUR 50,000 Austria Government Bond, 4.15%, 3/15/37 (144A) 83,741 228,000 Brazil Minas SPE via State of Minas Gerais, 5.333%, 2/15/28 (144A) 225,150 CAD 1,500,000 Canadian Government Bond, 1.75%, 9/1/19 1,123,395 CAD 1,500,000 Canadian Government Bond, 2.25%, 6/1/25 1,173,924 250,000 City of Buenos Aires Argentina, 7.5%, 6/1/27 (144A) 267,800 EGP 10,750,000 Egypt Treasury, 3/6/18 (c) 513,502 131,579 6.79 EP PetroEcuador via Noble Sovereign Funding I, Ltd., Floating Rate Note, 9/24/19 131,842 400,000 Gabon Government International Bond, 6.375%, 12/12/24 (144A) 391,700 GHS 700,000 Ghana Government Bond, 21.5%, 3/9/20 169,877 GHS 798,000 Ghana Government Bond, 24.5%, 4/22/19 201,024 GHS 314,000 Ghana Government Bond, 24.75%, 7/19/21 85,054 315,000 Honduras Government International Bond, 6.25%, 1/19/27 (144A) 326,230 422,000 Ivory Coast Government International Bond, 5.375%, 7/23/24 (144A) 410,879 415,000 Ivory Coast Government International Bond, 6.375%, 3/3/28 (144A) 417,191 JPY 120,000,000 Japan Government Ten Year Bond, 0.1%, 9/20/26 1,087,563 JPY 50,000,000 Japan Government Ten Year Bond, 1.0%, 12/20/21 472,987 JPY 50,000,000 Japan Government Twenty Year Bond, 1.5%, 3/20/19 463,309 MXN 3,830,000 Mexican Bonos, 4.75%, 6/14/18 199,115 MXN 2,400,000 Mexican Bonos, 6.5%, 6/9/22 124,177 MXN 300,000 Mexican Bonos, 7.5%, 6/3/27 16,226 MXN 3,898,300 Mexican Udibonos, 2.0%, 6/9/22 194,846 The accompanying notes are an integral part of these financial statements. 32 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- FOREIGN GOVERNMENT BONDS -- (continued) MXN 4,023,607 Mexican Udibonos, 3.5%, 12/14/17 $ 213,530 EUR 100,000 Mexico Government International Bond, 4.0%, 3/15/15 97,950 419,000 Namibia International Bonds, 5.25%, 10/29/25 (144A) 424,238 NZD 2,125,000 New Zealand Government Bond, 5.5%, 4/15/23 1,680,942 NOK 4,000,000 Norway Government Bond, 2.0%, 5/24/23 487,049 NOK 5,500,000 Norway Government Bond, 4.5%, 5/22/19 691,587 200,000 Oman Government Bond, 5.375%, 3/8/27 208,668 300,000 Provincia de Buenos Aires Argentina, 9.125%, 3/16/24 (144A) 340,650 300,000 Provincia de Buenos Aires Argentina, 9.95%, 6/9/21 (144A) 346,560 210,000 Provincia de Entre Rios Argentina, 8.75%, 2/8/25 (144A) 214,553 AUD 90,000 Queensland Treasury Corp., 5.5%, 6/21/21 75,957 AUD 100,000 Queensland Treasury Corp., 5.75%, 7/22/24 89,450 RON 750,000 Romania Government Bond, 5.85%, 4/26/23 205,756 RON 1,140,000 Romania Government Bond, 5.95%, 6/11/21 308,867 SEK 2,300,000 Sweden Government Bond, 2.5%, 5/12/25 303,230 200,000 Turkey Government International Bond, 6.0%, 3/25/27 214,000 140,000 Turkey Hazine Mustesarligi, 5.004%, 4/6/23 (144A) 142,660 GBP 435,000 United Kingdom Gilt, 1.75%, 7/22/19 584,300 GBP 450,000 United Kingdom Gilt, 3.5%, 1/22/45 804,835 GBP 150,000 United Kingdom Gilt, 4.25%, 9/7/39 284,891 GBP 150,000 United Kingdom Gilt, 8.75%, 8/25/17 199,564 -------------------------------------------------------------------------------------------------------------- TOTAL FOREIGN GOVERNMENT BONDS (Cost $18,955,657) $ 18,390,749 -------------------------------------------------------------------------------------------------------------- MUNICIPAL BONDS -- 1.0% (g) Municipal General -- 0.3% 70,000 JobsOhio Beverage System, 3.985%, 1/1/29 $ 74,731 20,000 JobsOhio Beverage System, 4.532%, 1/1/35 21,707 30,000 Virginia Commonwealth Transportation Board, 4.0%, 5/15/31 32,129 30,000 Virginia Commonwealth Transportation Board, 4.0%, 5/15/32 31,912 ---------------- $ 160,479 -------------------------------------------------------------------------------------------------------------- Higher Municipal Education -- 0.4% 25,000 Baylor University, 4.313%, 3/1/42 $ 25,983 25,000 California Educational Facilities Authority, 5.0%, 6/1/46 32,518 The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 33 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- Higher Municipal Education -- (continued) 15,000 Massachusetts Development Finance Agency, Harvard University-Series A, 5.0%, 7/15/40 $ 19,169 25,000 Massachusetts Institute of Technology, 5.6%, 7/1/11 31,214 50,000 University of Virginia, Green Bond Series A, 5.0%, 4/1/45 57,234 ---------------- $ 166,118 -------------------------------------------------------------------------------------------------------------- Municipal School District -- 0.1% 25,000 Frisco Independent School District, 4.0%, 8/15/40 $ 26,036 25,000 Frisco Independent School District, 4.0%, 8/15/45 25,880 ---------------- $ 51,916 -------------------------------------------------------------------------------------------------------------- Municipal Obligation -- 0.2% 50,000 State of Texas, 4.0%, 10/1/44 $ 51,786 50,000 State of Washington, 5.0%, 7/1/30 58,261 ---------------- $ 110,047 -------------------------------------------------------------------------------------------------------------- TOTAL MUNICIPAL BONDS (Cost $474,099) $ 488,560 -------------------------------------------------------------------------------------------------------------- SENIOR FLOATING RATE LOAN INTERESTS -- 2.1%** MATERIALS -- 0.1% Steel -- 0.1% 49,875 4.91 Zekelman Industries, Inc., Term Loan, 6/8/21 $ 50,530 ---------------- Total Materials $ 50,530 -------------------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 0.1% Industrial Conglomerates -- 0.1% 49,750 3.00 Milacron LLC, Term Loan (First Lien), 9/25/23 $ 50,061 ---------------- Total Capital Goods $ 50,061 -------------------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.2% Auto Parts & Equipment -- 0.2% 50,000 3.24 American Axle and Manufacturing, Inc., Term Loan (First Lien), 3/9/24 $ 49,856 49,873 5.90 Electrical Components International, Inc., Loan, 4/17/21 50,278 ---------------- $ 100,134 ---------------- Total Automobiles & Components $ 100,134 -------------------------------------------------------------------------------------------------------------- CONSUMER SERVICES -- 0.1% Specialized Consumer Services -- 0.1% 49,875 4.92 Kindercare Education LLC, Term Loan (First Lien), 8/13/22 $ 50,223 ---------------- Total Consumer Services $ 50,223 -------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 34 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- MEDIA -- 0.2% Cable & Satellite -- 0.1% 50,000 3.74 UPC Financing Partnership, Facility AP, 4/15/25 $ 50,244 Movies & Entertainment -- 0.1% 49,875 3.49 Regal Cinemas Corp., Refinancing Term Loan, 4/1/22 $ 50,479 ---------------- Total Media $ 100,723 -------------------------------------------------------------------------------------------------------------- RETAILING -- 0.1% Automotive Retail -- 0.1% 49,875 4.74 CWGS Group LLC, Term Loan, 11/3/23 $ 50,286 ---------------- Total Retailing $ 50,286 -------------------------------------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 0.1% Packaged Foods & Meats -- 0.1% 24,937 6.65 Give & Go Prepared Foods Corp., Term Loan (First Lien), 7/12/23 $ 25,166 ---------------- Total Food, Beverage & Tobacco $ 25,166 -------------------------------------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 0.1% Health Care Facilities -- 0.1% 49,366 4.69 Kindred Healthcare, Inc., Tranche B Loan (First Lien), 4/10/21 $ 49,497 -------------------------------------------------------------------------------------------------------------- Health Care Technology -- 0.0%+ 25,000 3.75 Change Healthcare Holdings LLC, Term Loan (First Lien), 2/3/24 $ 25,100 ---------------- Total Health Care Equipment & Services $ 74,597 -------------------------------------------------------------------------------------------------------------- PHARMACEUTICALS, BIOTECHNOLOGY & LIFE SCIENCES -- 0.5% Pharmaceuticals -- 0.5% 99,747 4.00 Endo Luxembourg Finance I Co Sarl, 2015 Incremental Term B Loan, 6/24/22 $ 99,969 100,000 5.00 Endo Luxembourg Finance, Term Loan (First Lien), 4/12/24 100,641 50,000 3.15 RPI Finance Trust, Term Loan (First Lien), 3/17/23 50,258 ---------------- $ 250,868 ---------------- Total Pharmaceuticals, Biotechnology & Life Sciences $ 250,868 -------------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.1% Specialized Finance -- 0.1% 49,896 3.31 Restaurant Brands, Term Loan (First Lien), 2/17/24 $ 49,984 ---------------- Total Diversified Financials $ 49,984 -------------------------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 0.2% Internet Software & Services -- 0.1% 24,938 4.53 Rackspace Hosting, Inc., Term B Loan (First Lien), 10/26/23 $ 25,143 -------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 35 Schedule of Investments | 4/30/17 (unaudited) (continued) -------------------------------------------------------------------------------------------------------------- Floating Principal Rate (b) Amount ($) (j) (unaudited) Value -------------------------------------------------------------------------------------------------------------- IT Consulting & Other Services -- 0.0%+ 25,000 3.49 Go Daddy Operating Co LLC, Initial Term Loan, 2/6/24 $ 25,113 -------------------------------------------------------------------------------------------------------------- Systems Software -- 0.1% 6,000 0.00 MA Finance Co., Term Loan (First Lien), 4/18/24 $ 6,030 44,000 2.75 Seattle Spinco, Inc., Term Loan (First Lien), 4/18/24 44,220 ---------------- $ 50,250 ---------------- Total Software & Services $ 100,506 -------------------------------------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES -- 0.1% Wireless Telecommunication Services -- 0.1% 50,000 3.50 Sprint Communications, Inc., Term Loan (First Lien), 2/2/24 $ 50,099 ---------------- Total Telecommunication Services $ 50,099 -------------------------------------------------------------------------------------------------------------- REAL ESTATE -- 0.2% Retail REIT -- 0.2% 99,494 4.40 DTZ US Borrower LLC, 2015-1 Additional Term Loan (First Lien), 11/4/21 $ 100,157 ---------------- Total Real Estate $ 100,157 -------------------------------------------------------------------------------------------------------------- TOTAL SENIOR FLOATING RATE LOAN INTERESTS (Cost $1,045,039) $ 1,053,334 -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- Shares -------------------------------------------------------------------------------------------------------------- CLOSED-END FUND -- 2.0% INSURANCE -- 2.0% Property & Casualty Insurance -- 2.0% 101,590 Pioneer ILS Interval Fund (h) $ 1,059,588 ---------------- Total Insurance $ 1,059,588 -------------------------------------------------------------------------------------------------------------- TOTAL CLOSED-END FUND (Cost $1,063,947) $ 1,059,588 -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- Principal Amount ($) (j) -------------------------------------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENTS -- 0.2% Commercial Paper -- 0.2% 130,000 Natixis, Commercial Paper, 5/1/17 (c) $ 129,990 -------------------------------------------------------------------------------------------------------------- TOTAL TEMPORARY CASH INVESTMENTS (Cost $130,000) $ 129,990 -------------------------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 97.5% (Cost $49,840,090) (a) (i) $ 49,909,495 -------------------------------------------------------------------------------------------------------------- OTHER ASSETS & LIABILITIES -- 2.5% $ 1,270,907 -------------------------------------------------------------------------------------------------------------- NET ASSETS -- 100.0% $ 51,180,402 ============================================================================================================== The accompanying notes are an integral part of these financial statements. 36 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 + Amount rounds to less than 0.1%. (TBA) To be announced securities. (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. REIT Real Estate Investment Trust. REMICS Real Estate Mortgage Investment Conduits. (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 April 30, 2017, the value of these securities amounted to $8,074,839 or 15.8% of net assets. ** 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 U.S. banks, (iii) the certificate of deposit or (iv) other base lending rates used by commercial lenders. The rate shown is the coupon rate at period end. (a) At April 30, 2017, the net unrealized appreciation on investments based on cost for federal income tax purposes of $49,854,054 was as follows: Aggregate gross unrealized appreciation for all investments in which there is an excess of value over tax cost $ 1,489,673 Aggregate gross unrealized depreciation for all investments in which there is an excess of tax cost over value (1,434,232) -------------- Net unrealized appreciation $ 55,441 ============== (b) Debt obligation with a variable interest rate. Rate shown is rate at period end. (c) Security issued with a zero coupon. Income is earned through accretion of discount. (d) Security represents the interest-only portion payments on a pool of underlying mortgages or mortgage-backed securities. (e) Structured reinsurance investment. At April 30, 2017, the value of these securities amounted to $144,234 or 0.2% of net assets. See Notes to Financial Statements -- Note 1I. (f) Rate to be determined. (g) Consists of Revenue Bonds unless otherwise indicated. (h) Affiliated funds managed by Pioneer Investment Management, Inc. The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 37 Schedule of Investments | 4/30/17 (unaudited) (continued) (i) Distributions of investments by country of domicile (excluding temporary cash investments) as a percentage of total investment in securities, is as follows: United States 42.2% Other (individually less than 1%) 10.9% United Kingdom 7.1% Supranational 6.5% Canada 5.4% Japan 4.1% Australia 3.7% New Zealand 3.4% Argentina 3.3% Netherlands 3.1% Norway 2.4% France 2.2% Mexico 2.0% Ivory Coast 1.7% Romania 1.0% Egypt 1.0% ------ 100.0% ====== (j) Principal amounts are denominated in U.S. Dollars unless otherwise noted: AUD Australian Dollar BRL Brazilian Real CAD Canadian Dollar EGP Egyptian Pound EUR Euro GBP British Pound Sterling GHS Ghanian Cedis INR Indian Rupee IDR Indonesian Rupiah JPY Japanese Yen MXN Mexican Peso NOK Norwegian Krone NZD New Zealand Dollar RON Romanian New Leu SEK Swedish Krona Purchases and sales of securities (excluding temporary cash investments) for the six months ended April 30, 2017 were as follows: ------------------------------------------------------------------------------------------------------ Purchases Sales ------------------------------------------------------------------------------------------------------ Long-Term U.S. Government $13,674,481 $ 7,273,125 Other Long-Term Securities $27,603,988 $10,654,826 The Fund is permitted to engage in purchase and sale transactions ("cross trades") with certain Funds and accounts for which Pioneer Investment Management, Inc. (PIM), serves as the Fund's investment adviser, as set forth in Rule 17a-7 under the Investment Company Act of 1940, pursuant to procedures adopted by the Board of Trustees. Under these procedures, cross trades are effected at current market prices. The accompanying notes are an integral part of these financial statements. 38 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 During the six months ended April 30, 2017, the Fund engaged in purchases and sales pursuant to these procedures amounting to $2,461,720 and $ --, respectively, which resulted in a net realized gain/loss of $ --. CENTRALLY CLEARED CREDIT DEFAULT SWAP AGREEMENT -- SELL PROTECTION ------------------------------------------------------------------------------------------------------------------ Notional Obligation Credit Expiration Premiums Unrealized Principal ($)(1) Exchange Entity/Index Coupon Rating(2) Date Paid Appreciation ------------------------------------------------------------------------------------------------------------------ 339,793 Chicago Markit CDX 5.00% B+ 12/20/19 $18,439 $10,645 Mercantile North America Exchange High Yield Index ------------------------------------------------------------------------------------------------------------------ CREDIT DEFAULT SWAP AGREEMENT -- SELL PROTECTION ------------------------------------------------------------------------------------------------------------------ Notional Obligation Credit Expiration Premiums Unrealized Principal ($)(1) Counterparty Entity/Index Coupon Rating(2) Date (Received) Depreciation ------------------------------------------------------------------------------------------------------------------ 50,000 Morgan Diamond 1.00% BBB+ 12/20/19 $(1,873) $1,009 Stanley Offshore Capital Drill Inc. Services LLC ------------------------------------------------------------------------------------------------------------------ (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 the weighted average of all the underlying securities in the index. 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 value of investments) See Notes to Financial Statements -- Note 1A. The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 39 Schedule of Investments | 4/30/17 (unaudited) (continued) The following is a summary of the inputs used as of April 30, 2017, in valuing the Fund's assets: ------------------------------------------------------------------------------------------------------------ Level 1 Level 2 Level 3 Total ------------------------------------------------------------------------------------------------------------ Convertible Corporate Bonds $ -- $ 164,246 $ -- $ 164,246 Preferred Stocks 5,881 -- -- 5,881 Convertible Preferred Stock 154,990 -- -- 154,990 Asset Backed Securities -- 188,923 -- 188,923 Collateralized Mortgage Obligations -- 1,434,043 -- 1,434,043 Corporate Bonds Insurance Reinsurance -- -- 144,234 144,234 All Other Corporate Bonds -- 15,091,163 -- 15,091,163 U.S. Government Agency Obligations -- 11,603,794 -- 11,603,794 Foreign Government Bonds -- 18,390,749 -- 18,390,749 Municipal Bonds -- 488,560 -- 488,560 Senior Floating Rate Loan Interests -- 1,053,334 -- 1,053,334 Closed-End Fund -- 1,059,588 -- 1,059,588 Commercial Paper -- 129,990 -- 129,990 ------------------------------------------------------------------------------------------------------------ Total $ 160,871 $ 49,604,390 $ 144,234 $ 49,909,495 ============================================================================================================ Other Financial Instruments Unrealized appreciation on futures contracts $ 59,008 $ -- $ -- $ 59,008 Unrealized depreciation on futures contracts (86,801) -- -- (86,801) Unrealized appreciation on forward foreign currency contracts -- 128,383 -- 128,383 Unrealized depreciation on forward foreign currency contracts -- (158,941) -- (158,941) Unrealized appreciation on centrally cleared swap contract -- 10,645 -- 10,645 Unrealized depreciation on credit default swap contract -- 1,009 -- 1,009 ------------------------------------------------------------------------------------------------------------ Total Other Financial Instruments $(27,793) $ (18,904) $ -- $ (46,697) ============================================================================================================ The accompanying notes are an integral part of these financial statements. 40 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 The following is a reconciliation of assets valued using significant unobservable inputs (Level 3): -------------------------------------------------------------------------------- Corporate Bonds -------------------------------------------------------------------------------- Balance as of 10/31/16 $126,790 Realized gain (loss)(1) -- Change in unrealized appreciation (depreciation)(2) (2,477) Purchases 110,000 Sales (90,079) Changes between level 3* -- -------------------------------------------------------------------------------- Balance as of 4/30/17 $144,234 ================================================================================ (1) Realized gain (loss) on these securities is included in the net realized gain (loss) from investments in the Statement of Operations. (2) Unrealized appreciation (depreciation) on these securities is included in the change in unrealized appreciation (depreciation) on investments in the Statement of Operations. * Transfers are calculated on the beginning of period values. During the six months ended April 30, 2017, there were no transfers between Levels 1, 2 and 3. Net change in unrealized appreciation (depreciation) of investments still held as of 4/30/17 $ (2,016) -------- The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 41 Statement of Assets and Liabilities | 4/30/17 (unaudited) ASSETS: Investment in securities of unaffiliated issuers, at value (cost $48,776,143) $48,849,907 Investment in securities of affiliated issuers, at value (cost $1,063,947) 1,059,588 -------------------------------------------------------------------------------------------------- Total investment in securities, at value (cost $49,840,090) $49,909,495 Cash 462,813 Foreign currencies, at value (cost $1,533,971) 1,550,321 Restricted cash* 186,382 Receivables -- Investment securities sold 532,901 Fund shares sold 67,386 Interest 468,288 Dividend 798 Variation margin for centrally cleared swap contracts 109 Unrealized appreciation on forward foreign currency contracts 128,383 Unrealized appreciation on credit default swap contracts 1,009 Due from Pioneer Investment Management, Inc. 8,981 Other assets 23,873 -------------------------------------------------------------------------------------------------- Total assets $53,340,739 ================================================================================================== LIABILITIES: Payables -- Investment securities purchased $ 1,778,133 Fund shares repurchased 14,903 Distributions 74,914 Audit Expense 29,529 Trustee fees 545 Swap contracts, premiums received 1,873 Variation margin for futures contracts 6,185 Unrealized depreciation on forward foreign currency contracts 158,941 Due to affiliates 5,292 Accrued expenses 90,022 -------------------------------------------------------------------------------------------------- Total liabilities $ 2,160,337 ================================================================================================== NET ASSETS: Paid-in capital $51,229,718 Distributions in excess of net investment income (110,863) Accumulated net realized gain on investments, futures contracts, swap contracts and foreign currency transactions 20,827 Net unrealized appreciation on investments 69,405 Net unrealized depreciation on futures contracts (27,793) Net unrealized appreciation on swap contracts 11,654 Net unrealized depreciation on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (12,546) -------------------------------------------------------------------------------------------------- Net assets $51,180,402 ================================================================================================== NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $24,841,892/2,353,309 shares) $ 10.56 Class C (based on $9,625,023/908,919 shares) $ 10.59 Class Y (based on $16,713,487/1,568,928 shares) $ 10.65 MAXIMUM OFFERING PRICE: Class A ($10.56 (divided by) 95.5%) $ 11.06 ================================================================================================== * Represents restricted cash deposited at the counterparty for derivative contracts The accompanying notes are an integral part of these financial statements. 42 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 Statement of Operations (unaudited) For the Six Months Ended 4/30/17 INVESTMENT INCOME: Interest $ 720,502 Dividends (including from affiliated issuer of $46,809) 51,600 ---------------------------------------------------------------------------------------------------- Total investment income $ 772,102 ---------------------------------------------------------------------------------------------------- EXPENSES: Management fees $ 96,169 Transfer agent fees Class A 99,883 Class C 2,021 Class Y 1,083 Distribution fees Class A 24,140 Class C 35,827 Shareholder communications expense 1,400 Administrative expense 16,564 Custodian fees 23,368 Registration fees 26,502 Professional fees 26,844 Printing expense 11,575 Pricing expense 13,579 Fees and expenses of non-affiliated Trustees 3,513 Miscellaneous 7,945 ---------------------------------------------------------------------------------------------------- Total expenses $ 390,413 Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (174,528) ---------------------------------------------------------------------------------------------------- Net expenses $ 215,885 ---------------------------------------------------------------------------------------------------- Net investment income $ 556,217 ---------------------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS, FUTURES CONTRACTS, SWAP CONTRACTS AND FOREIGN CURRENCY TRANSACTIONS: Net realized gain (loss) on: Investments $(561,874) Futures contracts 101,930 Swap contracts 5,858 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 527,987 $ 73,901 ---------------------------------------------------------------------------------------------------- Change in net unrealized appreciation (depreciation) on: Investments (including from affiliated issuer of ($26,085)) $ 263,597 Futures contracts (55,281) Swap contracts 7,784 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (100,403) $ 115,697 ---------------------------------------------------------------------------------------------------- Net realized and unrealized gain (loss) on investments, futures contracts, swap contracts and foreign currency transactions $ 189,598 ---------------------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $ 745,815 ==================================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 43 Statements of Changes in Net Assets ------------------------------------------------------------------------------------------------------ Six Months Ended 4/30/17 Year Ended (unaudited) 10/31/16 ------------------------------------------------------------------------------------------------------ FROM OPERATIONS: Net investment income $ 556,217 $ 847,139 Net realized gain (loss) on investments, futures contracts, swap contracts, written options and forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 73,901 (526,527) Change in net unrealized appreciation (depreciation) on investments, futures contracts, swap contracts, written options and foreign currency transactions 115,697 1,196,933 ------------------------------------------------------------------------------------------------------ Net increase (decrease) in net assets resulting from operations $ 745,815 $ 1,517,545 ------------------------------------------------------------------------------------------------------ DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.14 and $0.28 per share, respectively) $ (257,164) $ (353,498) Class C ($0.09 and $0.19 per share, respectively) (64,028) (80,543) Class Y ($0.15 and $0.31 per share, respectively) (209,451) (343,125) Tax return of capital: Class A ($0.00 and $0.08, respectively) -- (104,457) Class C ($0.00 and $0.08, respectively) -- (34,504) Class Y ($0.00 and $0.08, respectively) -- (88,241) ------------------------------------------------------------------------------------------------------ Total distributions to shareowners $ (530,643) $(1,004,368) ------------------------------------------------------------------------------------------------------ FROM FUND SHARE TRANSACTIONS (a): Net proceeds from sale of shares $28,596,034 $ 4,445,955 Reinvestment of distributions 201,409 501,412 Cost of shares repurchased (6,548,568) (5,772,331) ------------------------------------------------------------------------------------------------------ Net increase (decrease) in net assets resulting from Fund share transactions $22,248,875 $ (824,964) ------------------------------------------------------------------------------------------------------ Net increase (decrease) in net assets $22,464,047 $ (311,787) NET ASSETS: Beginning of year $28,716,355 $29,028,142 ------------------------------------------------------------------------------------------------------ End of year $51,180,402 $28,716,355 ------------------------------------------------------------------------------------------------------ Distributions in excess of net investment income $ (110,863) $ (136,437) ====================================================================================================== (a) At April 30, 2017, Pioneer Solutions-Growth Fund owned 6.4% of the value of outstanding shares of Pioneer Global Multisector Income Fund. The accompanying notes are an integral part of these financial statements. 44 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 ----------------------------------------------------------------------------------------------- Six Months Six Months Ended Ended 4/30/17 4/30/17 Year Ended Year Ended Shares Amount 10/31/16 10/31/16 (unaudited) (unaudited) Shares Amount ----------------------------------------------------------------------------------------------- Class A Shares sold 1,183,715 $12,306,642 252,692 $ 2,632,483 Reinvestment of distributions 15,337 159,574 38,692 401,821 Less shares repurchased (127,234) (1,323,757) (234,361) (2,430,066) ----------------------------------------------------------------------------------------------- Net increase 1,071,818 $11,142,459 57,023 $ 604,238 =============================================================================================== Class C Shares sold 531,147 $ 5,538,362 112,725 $ 1,164,736 Reinvestment of distributions 2,305 24,052 6,441 67,019 Less shares repurchased (35,752) (373,522) (102,171) (1,056,421) ----------------------------------------------------------------------------------------------- Net increase 497,700 $ 5,188,892 16,995 $ 175,334 =============================================================================================== Class Y Shares sold 1,024,325 $10,751,030 62,209 $ 648,736 Reinvestment of distributions 1,693 17,783 3,104 32,572 Less shares repurchased (464,245) (4,851,289) (218,162) (2,285,844) ----------------------------------------------------------------------------------------------- Net increase (decrease) 561,773 $ 5,917,524 (152,849) $(1,604,536) =============================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 45 Financial Highlights -------------------------------------------------------------------------------------------------------------------------------- Six Months Ended Year Year Year Year Year 4/30/17 Ended Ended Ended Ended Ended (unaudited) 10/31/16 10/31/15 10/31/14 10/31/13 10/31/12 -------------------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 10.60 $ 10.40 $ 10.91 $ 10.98 $11.49 $11.22 -------------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.14(b) $ 0.31(b) $ 0.31(b) $ 0.38 $ 0.30 $ 0.36 Net realized and unrealized gain (loss) on investments (0.04) 0.25 (0.41) (0.04) (0.35) 0.29 -------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.10 $ 0.56 $ (0.10) $ 0.34 $(0.05) $ 0.65 -------------------------------------------------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.14) $ (0.28) $ (0.31) $ (0.35) $(0.29) $(0.36) Net realized gain -- -- (0.10) (0.06) (0.17) (0.02) Tax return of capital -- (0.08) -- -- -- -- -------------------------------------------------------------------------------------------------------------------------------- Total distributions $ (0.14) $ (0.36) $ (0.41) $ (0.41) $(0.46) $(0.38) -------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.04) $ 0.20 $ (0.51) $ (0.07) $(0.51) $ 0.27 -------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.56 $ 10.60 $ 10.40 $ 10.91 $10.98 $11.49 ================================================================================================================================ Total return* 0.93% 5.59% (1.00)% 3.16% (0.45)% 5.98% Ratio of net expenses to average net assets (a) 1.00%** 1.00% 1.00% 1.01% 1.00% 1.00% Ratio of net investment income (loss) to average net assets 2.79%** 2.99% 2.87% 3.57% 3.36% 3.26% Portfolio turnover rate 84%** 37% 34% 51% 33% 29% Net assets, end of period (in thousands) $24,842 $13,579 $12,737 $11,601 $6,888 $9,128 Ratios with no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Total expenses to average net assets (a) 2.39%** 2.67% 2.67% 2.52% 2.05% 1.65% Net investment income (loss) to average net assets 1.40%** 1.32% 1.20% 2.06% 2.31% 2.60% ================================================================================================================================ * 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) Includes interest expense of 0.00%, 0.00%, 0.00%, 0.00%, 0.01% and 0.00%, respectively. (b) The per share data presented above is based on the average shares outstanding for the period presented. ** Annualized. The accompanying notes are an integral part of these financial statements. 46 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 -------------------------------------------------------------------------------------------------------------------------------- Six Months Ended Year Year Year Year Year 4/30/17 Ended Ended Ended Ended Ended (unaudited) 10/31/16 10/31/15 10/31/14 10/31/13 10/31/12 -------------------------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $10.63 $10.43 $10.94 $11.01 $11.51 $11.23 -------------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.10(b) $ 0.22(b) $ 0.21(b) $ 0.29 $ 0.20 $ 0.26 Net realized and unrealized gain (loss) on investments (0.05) 0.25 (0.41) (0.05) (0.34) 0.30 -------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.05 $ 0.47 $(0.20) $ 0.24 $(0.14) $ 0.56 -------------------------------------------------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $(0.09) $(0.19) $(0.21) $(0.25) $(0.19) $(0.26) Net realized gain -- -- (0.10) (0.06) (0.17) (0.02) Tax return of capital -- (0.08) -- -- -- -- -------------------------------------------------------------------------------------------------------------------------------- Total distributions $(0.09) $(0.27) $(0.31) $(0.31) $(0.36) $(0.28) -------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value (0.04) $ 0.20 $(0.51) $(0.07) $(0.50) $ 0.28 -------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $10.59 $10.63 $10.43 $10.94 $11.01 $11.51 ================================================================================================================================ Total return* 0.50% 4.67% (1.87)% 2.24% (1.24)% 5.09% Ratio of net expenses to average net assets (a) 1.82%** 1.90% 1.90% 1.91% 1.90% 1.90% Ratio of net investment income (loss) to average net assets 1.93%** 2.10% 1.96% 2.67% 2.46% 2.33% Portfolio turnover rate 84%** 37% 34% 51% 33% 29% Net assets, end of period (in thousands) $9,625 $4,370 $4,113 $4,156 $3,847 $4,414 Ratios with no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Total expenses to average net assets (a) 2.18%** 2.53% 2.56% 2.71% 2.75% 2.39% Net investment income (loss) to average net assets 1.56%** 1.46% 1.30% 1.87% 1.61% 1.84% ================================================================================================================================ * 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) Includes interest expense of 0.00%, 0.00%, 0.00%, 0.00%, 0.01% and 0.00%, respectively. (b) The per share data presented above is based on the average shares outstanding for the period presented. ** Annualized. The accompanying notes are an integral part of these financial statements. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 47 Financial Highlights (continued) --------------------------------------------------------------------------------------------------------------------------------- Six Months Ended Year Year Year Year Year 4/30/17 Ended Ended Ended Ended Ended (unaudited) 10/31/16 10/31/15 10/31/14 10/31/13 10/31/12 --------------------------------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 10.69 $ 10.50 $ 11.00 $ 11.07 $ 11.59 $ 11.30 --------------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.16(b) $ 0.34(b) $ 0.33(b) $ 0.42 $ 0.33 $ 0.39 Net realized and unrealized gain (loss) on investments (0.05) 0.24 (0.39) (0.05) (0.36) 0.30 --------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.11 $ 0.58 $ (0.06) $ 0.37 $ (0.03) $ 0.69 --------------------------------------------------------------------------------------------------------------------------------- Distribution to shareowners: Net investment income $ (0.15) $ (0.31) $ (0.34) $ (0.38) $ (0.32) $ (0.38) Net realized gain -- -- (0.10) (0.06) (0.17) (0.02) Tax return of capital -- (0.08) -- -- -- -- --------------------------------------------------------------------------------------------------------------------------------- Total distributions $ (0.15) $ (0.39) $ (0.44) $ (0.44) $ (0.49) $ (0.40) --------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.04) $ 0.19 $ (0.50) $ (0.07) $ (0.52) $ 0.29 --------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.65 $ 10.69 $ 10.50 $ 11.00 $ 11.07 $ 11.59 ================================================================================================================================= Total return* 1.06% 5.73% (0.62)% 3.42% (0.25)% 6.24% Ratio of net expenses to average net assets (a) 0.75%** 0.75% 0.75% 0.76% 0.75% 0.79% Ratio of net investment income (loss) to average net assets 3.06%** 3.24% 3.12% 3.81% 3.58% 3.42% Portfolio turnover rate 84%** 37% 34% 51% 33% 29% Net assets, end of period (in thousands) $16,713 $10,767 $12,178 $12,525 $17,438 $15,297 Ratios with no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Total expenses to average net assets (a) 1.14%** 1.41% 1.39% 1.50% 1.57% 1.18% Net investment income (loss) to average net assets 2.67%** 2.59% 2.48% 3.07% 2.76% 3.04% ================================================================================================================================= * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. (a) Includes interest expense of 0.00%, 0.00%, 0.00%, 0.00%, 0.01% and 0.00%, respectively. (b) The per share data presented above is based on the average shares outstanding for the period presented. ** Annualized. The accompanying notes are an integral part of these financial statements. 48 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 Notes to Financial Statements | 4/30/17 (unaudited) 1. Organization and Significant Accounting Policies Pioneer Global Multisector Income Fund (the Fund) is a series of Pioneer Series Trust VII, a Delaware statutory trust. The Fund is registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The investment objective of the Fund is to provide a high level of current income. 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 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 (U.S. GAAP) that require the management of the Fund to 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 Fund is an investment company and follows investment company accounting and reporting guidance under U.S. GAAP. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements: A. Security Valuation 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. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 49 Fixed-income securities are valued by using 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, or may use a pricing matrix or other fair value methods or techniques to provide an estimated value of the security or instrument. A pricing matrix is a means of valuing a debt security on the basis of current market prices for other debt securities, historical trading patterns in the market for fixed-income securities and/or other factors. Non-U.S. debt securities that are listed on an exchange will be valued at the bid price obtained from an independent third party pricing service. When independent market quotations are considered to be unreliable, the value of that security may be determined using quotations from one or more broker-dealers. The value of foreign securities is translated into U.S. dollars based on foreign currency exchange rate quotations supplied by a third party pricing source. Trading in non-U.S. equity 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. The fund may use a fair value model developed by an independent pricing service to value non-U.S. equity securities. Loan interests 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 third party 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 or catastrophe bonds are valued at the bid price obtained from an independent third party pricing service. Other insurance linked securities (including sidecars, collateralized reinsurance and industry loss warranties) 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 by using 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 or, if both last bid and asked prices are not available, at the last quoted bid price. Last sale and bid and asked prices are provided by 50 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 independent third party pricing services. In the case of equity securities not traded on an exchange, prices are typically determined by independent third party pricing services using a variety of techniques and methods. Swap contracts, including interest rate swaps, caps and floors (other than centrally cleared swap contracts) are valued at the dealer quotations obtained from reputable International Swap Dealers Association members. Centrally cleared swaps are valued at the daily settlement price provided by the central clearing counterparty. Futures contracts are generally valued at the closing settlement price established by the exchange on which they are traded. Forward foreign currency exchange contracts are valued daily using the foreign exchange rate or, for longer term forward contract positions, the spot currency rate and the forward points on a daily basis, in each case provided by a third party pricing service. Contracts whose forward settlement date falls between two quoted days are valued by interpolation. Securities or loan interests for which independent pricing services or broker dealers 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 and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), 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 April 30, 2017, no securities were valued using fair value methods (other than securities valued using prices supplied by independent pricing services, broker-dealers or using a third party insurance industry pricing model). Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 51 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, including interest on income bearing cash accounts, is recorded on the accrual basis. Dividend and interest income are reported net of unrecoverable foreign taxes withheld at the applicable country rates. Security transactions are recorded as of trade date. 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 prices of those securities but are included with the net realized and unrealized gain or loss on investments. D. 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 52 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 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). E. 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 net taxable income and net realized capital gains, if any, to its shareowners. Therefore, no provision for federal income taxes is required. As of October 31, 2016, 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. GAAP. 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. The tax character of current year distributions payable will be determined at the end of the current taxable year. The tax character of distributions during the year ended October 31, 2016 was as follows: --------------------------------------------------------------------------------- 2016 --------------------------------------------------------------------------------- Distributions paid from: Ordinary income $ 777,166 Long-term capital gain -- Return of capital 227,202 --------------------------------------------------------------------------------- Total $1,004,368 ================================================================================= The following shows the components of distributable earnings on a federal income tax basis at October 31, 2016: --------------------------------------------------------------------------------- 2016 --------------------------------------------------------------------------------- Distributable earnings: Capital loss carryforward $ (25,586) Current year dividend payable (31,114) Unrealized depreciation (207,788) --------------------------------------------------------------------------------- Total $ (264,488) ================================================================================= Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 53 The difference between book-basis and tax-basis net unrealized depreciation is attributable to the tax deferral of losses on wash sales, adjustments related to sidecars, the mark-to-market of forward, swaps and futures contracts, and interest accruals on preferred stock. F. 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, earned $2,620 in underwriting commissions on the sale of Class A shares during the six months ended April 30, 2017. 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 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 Fund's transfer agent, 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. H. Risks The value of securities held by the fund may go up or down, sometimes rapidly or unpredictably, due to general market conditions, such as real or perceived adverse economic, political or regulatory conditions, inflation, changes in interest rates, lack of liquidity in the bond markets or adverse investor sentiment. In the past several years, financial markets have experienced increased volatility, depressed valuations, decreased liquidity and heightened uncertainty. These conditions may continue, recur, worsen or spread. 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 54 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 those industries and sectors. The Fund's investments in foreign markets and countries with limited developing markets may subject the Fund to a greater degree of risk than investments in a developed market. These risks include disruptive political or economic conditions and the imposition of adverse governmental laws or currency exchange restrictions. 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. Interest rates in the U.S. recently have been historically low, so the Fund faces a heightened risk that interest rates may rise. A general rise in interest rates may cause investors to move out of fixed income securities on a large scale, which could adversely affect the price and liquidity of fixed income securities and could also result in increased redemptions from the Fund. The Fund invests in below investment grade (high yield) debt securities and preferred stocks. Some of these high yield securities may be convertible into equity securities of the issuer. Debt securities rated below investment grade are commonly referred to as "junk bonds" and are considered speculative. These securities involve greater risk of loss, are subject to greater price volatility, and are less liquid, especially during periods of economic uncertainty or change, than higher rated debt securities. I. Insurance-Linked Securities (ILS) 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 occurs, as defined within the terms of an event-linked bond, 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. 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"). A traditional Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 55 ILW takes the form of a bilateral reinsurance contract, but there are also products that take the form of derivatives, collateralized structures, or exchange traded instruments. Structured reinsurance investments, including quota share instruments, collateralized reinsurance investments and ILWs, generally are subject to the same risks as event-linked bonds. In addition, where the instruments are based on the performance 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 structured reinsurance investments, and therefore the Fund's assets are placed at greater risk of loss than if PIM had more complete information. Structured reinsurance instruments generally will be considered illiquid securities by the Fund. These securities may be difficult to purchase, sell or unwind. Illiquid securities also may be difficult to value. If the Fund is forced to sell an illiquid asset, the Fund may be forced to sell at a loss. J. 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 April 30, 2017 was $161,550 and is recorded within "Restricted cash" on the Statement of Assets and Liabilities. 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. Futures contracts are subject to market risk, interest rate risk and currency exchange rate risk. Changes in value of the contracts may not directly correlate to the changes in value of the underlying securities. With futures, there is minimal counterparty credit risk to the Fund since futures are exchange-traded and the exchange's clearinghouse, as counterparty to all exchange-traded futures, guarantees the futures against default. The average value of contracts open during the six months ended April 30, 2017, was $(2,987,563). 56 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 At April 30, 2017, open futures contracts were as follows: --------------------------------------------------------------------------------------------- Net Number of Unrealized Contracts Settlement Appreciation Type Counterparty Long/(Short) Month Value (Depreciation) --------------------------------------------------------------------------------------------- Euro Bund Citibank NA 13 6/17 $ 2,291,581 $ 3,803 US 2 Yr Note Citibank NA 6 6/17 1,299,656 1,923 US Ultra Bond Citibank NA 11 6/17 1,792,313 33,082 US 5 Yr Note Citibank NA (22) 6/17 (2,604,937) (18,785) US 10 Yr Note Citibank NA (43) 6/17 (5,405,906) (60,829) US 10 Yr Ultra Citibank NA (4) 6/17 (541,813) (7,187) EURO-BOBL Bond Citibank NA (25) 6/17 (3,591,866) 12,791 EURO-BUXL 30 Yr Bond Citibank NA 5 6/17 921,584 7,409 --------------------------------------------------------------------------------------------- Total $(5,839,388) $(27,793) ============================================================================================= K. Repurchase Agreements Repurchase agreements are arrangements under which the Fund purchases securities from a broker-dealer or a bank, called the counterparty, upon the agreement of the counterparty to repurchase the securities from the Fund at a later date, and at a specific price, which is typically higher than the purchase price paid by the Fund. The securities purchased serve as the Fund's collateral for the obligation of the counterparty to repurchase the securities. The value of the 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. In the event of a default by the counterparty, the Fund is entitled to sell the securities, but the Fund may not be able to sell them for the price at which they were purchased, thus causing a loss to the Fund. Additionally, if the counterparty becomes insolvent, there is some risk that the Fund will not have a right to the securities, or the immediate right to sell the securities. As of and for the six months ended April 30, 2017, the Fund had no open repurchase agreements. L. 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 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 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 57 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. 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. The amount of cash deposited with a broker as collateral at April 30, 2017 was $25,014 and is recorded within "Restricted Cash" on the Statement of Assets and Liabilities. 58 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 Open credit default swap contracts at April 30, 2017, are listed in the Schedule of Investments. The average value of swap contracts open during the six months ended April 30, 2017 was $24,640. 2. Management Agreement PIM manages the Fund's portfolio. Management fees are calculated daily at the annual rate of 0.50% of the Fund's average daily net assets. PIM has contractually agreed to limit ordinary operating expenses (ordinary operating expenses means all fund expenses other than extraordinary expenses, such as litigation, taxes, brokerage commissions and acquired fund fees and expenses) of the Fund to the extent required to reduce Fund expenses to 1.00%, 1.90% and 0.75% of the average daily net assets attributable to Class A, Class C and Class Y shares, respectively. Fees waived and expenses reimbursed during the six months ended April 30, 2017, are reflected on the Statement of Operations. These expense limitations are in effect through March 1, 2018. 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 from affiliates" reflected on the Statement of Assets and Liabilities is $3,560 in management fees, administrative costs and certain other reimbursements due to PIM at April 30, 2017. 3. Transfer Agent Boston Financial Data Services serves as the transfer agent to the Fund at negotiated rates. Transfer agent fees and payables shown on the Statement of Operations and the Statement of Assets and Liabilities, respectively, include sub-transfer agent expenses incurred through the Fund's omnibus relationship contracts. In addition, the Fund reimbursed the transfer agent for out-of-pocket expenses incurred by the transfer agent related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the six months ended April 30, 2017, such out-of-pocket expenses by class of shares were as follows: -------------------------------------------------------------------------------- Shareholder Communications: -------------------------------------------------------------------------------- Class C $1,200 Class Y 200 -------------------------------------------------------------------------------- Total $1,400 ================================================================================ Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 59 4. Distribution Plan The Fund has adopted a distribution plan (the 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 $1,732 in distribution fees payable to PFD at April 30, 2017. 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 six months ended April 30, 2017, CDSCs in the amount of $29 were paid to PFD. 5. Forward Foreign Currency Contracts During the six months ended April 30, 2017, 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 six months ended April 30, 2017, was $ (7,046,859). 60 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 Open forward foreign currency contracts at April 30, 2017, were as follows: ---------------------------------------------------------------------------------------------------------- In Currency Currency Exchange Settlement Unrealized Sold Deliver Purchased For Counterparty Date Appreciation ---------------------------------------------------------------------------------------------------------- EUR (471,558) CZK 12,685,636 Bank of America NA 9/15/2017 $ 1,802 USD (1,354,008) EUR 1,260,000 Citibank NA 9/15/2017 28,871 New York NY USD (506,896) EUR 465,868 Goldman Sachs 5/30/2017 1,461 International CAD (924,209) USD 695,272 JP Morgan 7/13/2017 18,305 Chase Bank NA NZD (3,680,014) USD 2,579,977 State Street 6/30/2017 55,092 Bank & Trust AUD (2,458,679) USD 1,852,418 JP Morgan 5/26/2017 12,931 Chase Bank NA USD (1,020,669) EUR 944,453 State Street 5/30/2017 9,921 Bank & Trust ---------------------------------------------------------------------------------------------------------- Total $ 128,383 ========================================================================================================== ---------------------------------------------------------------------------------------------------------- In Currency Currency Exchange Settlement Unrealized Sold Deliver Purchased For Counterparty Date Depreciation ---------------------------------------------------------------------------------------------------------- ZAR (3,572,650) USD 258,988 JP Morgan 5/8/2017 $ (7,729) Chase Bank NA KRW (2,966,602,392) USD 2,591,901 Goldman Sachs 7/20/2017 (19,610) International EUR (3,030,798) USD 3,218,153 Brown Brothers 5/30/2017 (89,062) Harriman & Co. EUR (503,760) SEK 4,784,051 State Street 6/26/2017 (8,800) Bank & Trust TWD (16,485,602) USD 543,545 Goldman Sachs 7/20/2017 (3,837) International EUR (488,657) CHF 521,480 Societe Generale 7/12/2017 (7,486) USD (254,657) PHP 12,715,000 Bank of America NA 7/10/2017 (2,041) USD (2,804,669) JPY 310,769,076 State Street 7/12/2017 (6,440) Bank & Trust HUF (152,026,473) USD 518,534 Societe Generale 7/19/2017 (12,142) INR (22,302,702) USD 342,197 Bank of America NA 7/12/2017 (1,193) USD (110,844) IDR 1,481,876,069 JP Morgan 7/12/2017 (601) Chase Bank NA ---------------------------------------------------------------------------------------------------------- Total $(158,941) ========================================================================================================== AUD Australian Dollar CAD Canadian Dollar CHF Swiss Franc CZK Czech Koruna EUR Euro HUF Hungarian Forint IDR Indonesian Rupiah INR Indian Rupee JPY Japanese Yen KRW South Korean Won PHP Philippine Peso SEK Swedish Krona TWD New Taiwan Dollar ZAR South African Rand Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 61 6. 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 an event of default and/or a 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 each specific ISDA of each 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 "Restricted cash." 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 not been offset on the Statement of Assets and Liabilities. The following charts show gross assets and liabilities of the Fund as of April, 30 2017. 62 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 ----------------------------------------------------------------------------------------------------- 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) ----------------------------------------------------------------------------------------------------- Bank of America NA $ 1,802 $ (1,802) $-- $-- $ -- Brown Brothers Harriman & Co. -- -- -- -- -- Citibank NA New York NY 28,871 -- -- -- 28,871 Goldman Sachs International 1,461 (1,461) -- -- -- JP Morgan Chase Bank NA 31,236 (8,330) -- -- 22,906 Morgan Stanley Capital Services LLC 1,009 -- -- -- 1,009 State Street Bank & Trust 9,921 (9,921) -- -- -- Societe Generale -- -- -- -- -- ----------------------------------------------------------------------------------------------------- Total $74,300 $(21,514) $-- $-- $52,786 ===================================================================================================== ------------------------------------------------------------------------------------------------------- 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 (b) ------------------------------------------------------------------------------------------------------- Bank of America NA $ 3,234 $ (1,802) $-- $-- $ 1,432 Brown Brothers Harriman & Co. 89,062 -- -- -- 89,062 Citibank NA New York NY -- -- -- -- -- Goldman Sachs International 23,447 (1,461) -- -- 21,986 JP Morgan Chase Bank NA 8,330 (8,330) -- -- -- Morgan Stanley Capital Services LLC -- -- -- -- -- State Street Bank & Trust 15,240 (9,921) -- -- 5,319 Societe Generale 19,628 -- -- -- 19,628 ------------------------------------------------------------------------------------------------------- Total $158,941 $(21,514) $-- $-- $137,427 ======================================================================================================= (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. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 63 7. Additional Disclosures about Derivative Instruments and Hedging Activities The Fund's use of derivatives subjects it to the following risks: Interest rate risk relates to the fluctuations in the value of interest-bearing securities due to changes in the prevailing levels of market interest rates. Credit risk relates to the ability of the issuer of a financial instrument to make further principal or interest payments on an obligation or commitment that it has to the Fund. Foreign exchange rate risk relates to fluctuations in the value of an asset or liability due to changes in currency exchange rates. Equity risk relates to the fluctuations in the value of financial instruments as a result of changes in market prices (other than those arising from interest rate risk or foreign exchange risk), whether caused by factors specific to an individual investment, its issuer, or all factors affecting all instruments traded in a market or market segment. Commodity risk relates to the risk that the value of a commodity or commodity index will fluctuate based on increases or decreases in the commodities market and factors specific to a particular industry or commodity. The fair value of open derivative instruments (not considered to be hedging instruments for accounting disclosure purposes) by risk exposure at April 30, 2017 was as follows: ----------------------------------------------------------------------------------------------------- Foreign Statement of Assets Interest Credit Exchange Equity Commodity and Liabilities Rate Risk Risk Rate Risk Risk Risk ----------------------------------------------------------------------------------------------------- Assets Unrealized appreciation on forward foreign currency contracts $ -- $ -- $128,383 $-- $-- Unrealized appreciation on futures contracts* 59,008 -- -- -- -- Unrealized appreciation on centrally cleared swap contracts -- 10,645 -- -- -- Unrealized appreciation on swap contracts -- 1,009 -- -- -- ----------------------------------------------------------------------------------------------------- Total Value $59,008 $11,654 $128,383 $-- $-- ===================================================================================================== * Reflects unrealized appreciation/depreciation of futures contracts (see Note 1J). The current day's variation margin is disclosed on the Statement of Assets and Liabilities. 64 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 ----------------------------------------------------------------------------------------------------- Foreign Statement of Assets Interest Credit Exchange Equity Commodity and Liabilities Rate Risk Risk Rate Risk Risk Risk ----------------------------------------------------------------------------------------------------- Liabilities Unrealized depreciation on forward foreign currency contracts $ -- $-- $158,941 $-- $-- Unrealized depreciation on futures contracts* 86,801 -- -- -- -- ----------------------------------------------------------------------------------------------------- Total Value $86,801 $-- $158,941 $-- $-- ===================================================================================================== * Reflects unrealized appreciation/depreciation of futures contracts (see Note 1J). The current day's variation margin is disclosed on the Statement of Assets and Liabilities. The effect of derivative instruments (not considered to be hedging instruments for accounting disclosure purposes) on the Statement of Operations by risk exposure at April 30, 2017 was as follows: ----------------------------------------------------------------------------------------------------- Foreign Statement of Interest Credit Exchange Equity Commodity Operations Rate Risk Risk Rate Risk Risk Risk ----------------------------------------------------------------------------------------------------- Net realized gain (loss) on Futures contracts $101,930 $ -- $ -- $-- $-- Swap contracts -- 5,858 -- -- -- Forward foreign currency contracts** -- -- 574,987 -- -- ----------------------------------------------------------------------------------------------------- Total Value $101,930 $5,858 $ 574,987 $-- $-- ===================================================================================================== Change in net unrealized appreciation (depreciation) on Futures contracts $(55,281) $ -- $ -- $-- $-- Swap contracts -- 7,784 -- -- -- Forward foreign currency contracts** -- -- (122,490) -- -- ----------------------------------------------------------------------------------------------------- Total Value $(55,281) $7,784 $(122,490) $-- $-- ===================================================================================================== ** Included in the amount shown on the Statement of Operations as foward foreign currency contracts and other assets and liabilities denominated in foreign currencies. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 65 8. 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 which the Fund participated until February 9, 2016 was in the amount of $240 million. The credit facility in which the Fund participated until February 7, 2017, was in the amount of $220 million. Effective February 8, 2017, the Fund participated in a facility that is in the amount of $13.9 million. Under such facility, depending on the type of loan, interest on borrowings is payable at the London Interbank Offered Rate (LIBOR) plus 0.85% 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 or (c) 2% plus the overnight Eurodollar rate on the borrowing date. The Funds pay an annual commitment fee to participate in a credit facility. The commitment fee is allocated among participating Funds based on an allocation schedule set forth in the credit agreement. For the six months ended April 30, 2017, the Fund had no borrowings under the credit facility. 66 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 ADDITIONAL INFORMATION Pioneer Investment Management, Inc. (the "Adviser"), the Fund's investment adviser, is currently an indirect, wholly owned subsidiary of UniCredit S.p.A. ("UniCredit"). On December 12, 2016, UniCredit announced that it has entered into a binding agreement for the sale of its Pioneer Investments business, which includes the Adviser, to Amundi (the "Transaction"). Amundi is headquartered in Paris, France, and, as of September 30, 2016, had more than $1.1 trillion in assets under management worldwide. The closing of the Transaction is expected to happen in 2017, subject to certain regulatory and antitrust approvals, and other conditions. Under the Investment Company Act of 1940, the closing of the Transaction will cause the Fund's current investment advisory agreement with the Adviser to terminate. Accordingly, the Fund's Board of Trustees has approved a new investment advisory agreement for the Fund, which has been submitted to the shareholders of the Fund for their approval. Change in Independent Registered Public Accounting Firm Deloitte & Touche LLP, the Fund's independent registered public accounting firm, has informed the Board that it will no longer be independent with respect to the Fund upon the completion of the Transaction and, accordingly, that it intends to resign as the Fund's independent registered public accounting firm upon the completion of the Transaction. The Board will engage a new independent registered public accounting firm for the Fund upon the completion of the Transaction. During the periods that Deloitte & Touche LLP has served as the Fund's independent registered public accounting firm, including the Fund's two most recent fiscal years, Deloitte & Touche LLP's reports on the Fund's financial statements have not contained an adverse opinion or disclaimer of opinion and have not been qualified or modified as to uncertainty, audit scope or accounting principles. Further, there have been no disagreements with Deloitte & Touche LLP on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which, if not resolved to the satisfaction of Deloitte & Touche LLP, would have caused Deloitte & Touche LLP to make reference to the subject matter of the disagreement in connection with its report on the financial statements. In addition, there have been no reportable events of the kind described in Item 304(a)(1)(v) of Regulation S-K under the Securities Exchange Act of 1934. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 67 Approval of New and Interim Management Agreements Pioneer Investment Management, Inc. (PIM) serves as the investment adviser to Pioneer Global Multisector Income Fund (the Fund) pursuant to an investment management agreement between PIM and the Fund. PIM is the principal U.S. asset management business of Pioneer Investments, a group of companies owned by Pioneer Global Asset Management S.p.A. ("PGAM"). PGAM is a wholly-owned subsidiary of UniCredit S.p.A. ("UniCredit"). UniCredit and PGAM have entered into a binding agreement to sell Pioneer Investments, including PIM, to Amundi (the "Transaction"). Upon the consummation of the transaction, PIM will become an indirect wholly-owned subsidiary of Amundi and Amundi's wholly-owned subsidiary, Amundi USA, Inc. The closing of the Transaction is expected to happen in 2017. Under the Investment Company Act of 1940, the Fund's current investment management agreement (the "Current Management Agreement") will terminate automatically upon the consummation of the Transaction. In order for PIM to continue to manage the Fund after the consummation of the Transaction, the Trustees and shareholders of the Fund must approve a new investment management agreement for the Fund (the "New Management Agreement"). As discussed below, the Board of Trustees of the Fund approved the New Management Agreement at a meeting held on March 6-7, 2017. The New Management Agreement has been submitted to the shareholders of the Fund for their approval at a meeting to be held on June 13, 2017. If the shareholders of the Fund do not approve the New Management Agreement and the Transaction is completed, an interim investment management agreement between PIM and the Fund (the "Interim Management Agreement") will take effect upon the closing of the Transaction. The Board of Trustees of the Fund also approved the Interim Management Agreement at the March 6-7, 2017 meeting. Board Evaluation of the New and Interim Management Agreements The Board evaluated the Transaction and the New Management Agreement and Interim Management Agreement for the Fund. In connection with their evaluation of the Transaction and the New Management Agreement for the Fund, the Trustees requested such information as they deemed reasonably necessary, including: (a) the structure of the Transaction and the strategy underlying the Transaction; (b) the anticipated benefits of the Transaction to the Fund and its shareholders; (c) the post-Transaction plans for PIM, including Amundi's plans for integration of Pioneer Investments and PIM with its existing asset management businesses and plans for the future development of PIM; (d) the effect of the Transaction on the ongoing services provided to 68 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 the Fund, including the need to select a new independent registered public accounting firm for the Fund, and any plans to modify the operations of the Fund; (e) the stability and continuity of PIM's management and key employees, including compensation and benefits to PIM's key employees, and retention plans and incentive plan structure; (f) the post-Transaction indebtedness and financial resources of PIM; (g) Amundi's legal and operational structure, its principal shareholders and senior management, its investment management, risk management, administrative, legal and compliance functions; (h) certain regulatory matters relating to Amundi's affiliates; and (i) Amundi's commitment to the United States, including the role of PIM in the larger Amundi business. The Trustees also requested and obtained the following information in connection with their evaluation of the Transaction and the New Management Agreement for the Fund: (i) memoranda provided by Fund counsel that summarized the legal standards and other considerations that are relevant to the Trustees in their deliberations regarding the New Management Agreement; (ii) the qualifications of the investment management teams for the Fund, as well as the level of investment by the Fund's portfolio managers in the Fund; (iii) the Fund's management fees and total expense ratios, the financial statements of PIM and its pre- and post-Transaction parent companies, profitability analyses from PIM, and analyses from PIM as to possible economies of scale; (iv) the profitability of the institutional business of PIM and PIM's affiliate, Pioneer Institutional Asset Management, Inc. ("PIAM") as compared to that of PIM's fund management business; and (v) the differences between the fees and expenses of the Fund and the fees and expenses of PIM's and PIAM's institutional accounts, as well as the different services provided by Adviser to the Fund and by PIM and PIAM to the institutional accounts. In addition, the Trustees considered the information provided at regularly scheduled meetings throughout the year regarding the Fund's performance and risk attributes, including through meetings with investment management personnel, and took into account other information related to the Fund provided to the Trustees at regularly scheduled meetings. The Trustees also considered information they had received in their review of the continuance of the Current Management Agreement for the Fund in September 2016. At meetings held on January 9, 2017 and January 10, 2017, the Trustees met with representatives of Amundi and PGAM, including separate meetings of the Trustees who are not "interested persons" of the Fund Complex ("Independent Trustees") and counsel with representatives of Amundi and PGAM, and subsequently with representatives of Amundi. In those meetings, they received an extensive presentation from the representatives of Amundi, including the chief executive officer of Amundi, describing Amundi's Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 69 background and history, its global asset management activities, the growth of its business, and its status as the largest asset management firm in Europe and one of the largest globally; its capital structure and financial resources, including information as to the financing of the Transaction; its principal investors, including its majority investor Credit Agricole S.A., and Credit Agricole's long-term commitment to the asset management business; the philosophy and strategy underlying the Transaction and the complementarity of Amundi's and Pioneer Investments' respective asset management businesses; Amundi's various operating and investment committees and how they would likely interact with PIM; the proposed integration process, including the progress to date and the establishment of various integration work streams; Amundi's plans for management of PIM; Amundi's philosophy as to compensation of key employees and its general intentions with respect to incentive plans for key employees of PIM; Amundi's preliminary plans to achieve cost and other synergies; and opportunities to further develop the business of PIM and PIAM, including in the area of institutional asset management, and how that would benefit shareholders of the Pioneer Funds. In those meetings, the representatives of Amundi confirmed their intention that the Chief Executive Officer and Chief Investment Officer of PIM would remain in their current positions, and confirmed that they do not currently foresee major changes in the day-to-day investment management operations of PIM with respect to the Fund as a direct result of the Transaction. They discussed incentive arrangements for key personnel that would continue after the closing of the Transaction and their plans to establish a new long-term incentive plan following the closing. They also generally discussed ways in which PIM could potentially draw on the expanded global resources of Amundi post-Transaction. At those meetings, the Independent Trustees identified certain areas to which they requested further information, including as to trading and execution of securities transactions, research and portfolio management and potential changes in investment process, particularly where asset classes managed by PIM would overlap with asset classes managed by Amundi, the continued availability of resources currently at Pioneer Investments or elsewhere within Amundi to assist in management of certain Funds, and any anticipated significant changes in operations. The Independent Trustees considered the uncertainty as to whether the Fund's independent registered public accounting firm could continue to act in that capacity after the closing of the Transaction. The Independent Trustees also met with counsel to review the information they had received to date and to discuss next steps. Subsequently, the Trustees received further information from Amundi, including written responses to questions raised by the Independent Trustees, and received from PIM the information requested of it. The Independent Trustees reviewed the information provided with counsel at telephonic 70 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 meetings held on February 16, 2017 and February 27, 2017. The Trustees held a special in-person Board meeting on March 6-7, 2017 for further consideration of the New Management Agreements, the Interim Management Agreements and the Transaction. The Trustees met again with senior executives of Amundi at the March 6-7, 2017 meeting. At the March 6-7, 2017 meeting, based on their evaluation of the information provided by PIM and Amundi, the Trustees including the Independent Trustees voting separately, approved the New Management Agreement and the Interim Management Agreement for the Fund. In considering the New Management Agreement for the Fund, the Trustees considered various factors that they determined were relevant, including the factors described below. The Trustees did not identify any single factor as the controlling factor in their determinations. The Trustees considered the same factors with respect to the Interim Management Agreement for the Fund. Nature, Extent and Quality of Services The Trustees considered the nature, extent and quality of the services that had been provided by PIM to the Fund and that are expected to be provided by PIM to the Fund following the consummation of the Transaction. The Trustees reviewed the terms of the New Management Agreement, and noted that such terms are substantially similar to the terms of the Current Management Agreement, except for different execution dates, effective dates and termination dates. The Trustees reviewed PIM's investment approach for the Fund and its research process. The Trustees considered the resources of PIM and the personnel of PIM who provide investment management services to the Fund. They also reviewed the amount of non-investment resources and personnel of PIM that are involved in PIM's services to the Fund, including PIM's compliance and legal resources and personnel. The Trustees noted the substantial attention and high priority given by PIM's senior management to the Pioneer Fund complex. The Trustees considered that PIM supervises and monitors the performance of the Fund's service providers and provides the Fund with personnel (including Fund officers) and other resources that are necessary for the Fund's business management and operations and that PIM would continue to provide those investment management and research services and resources to the Fund following the consummation of the Transaction. The Trustees also considered that, as administrator, PIM would continue to be responsible for the administration of the Fund's business and other affairs. The Trustees considered the fees to be paid to PIM for the provision of administration services. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 71 The Trustees considered that Deloitte & Touche LLP has informed the Board that it will no longer be independent with respect to the Fund upon the completion of the Transaction and, accordingly, that it will be necessary for the Board to engage a new independent registered public accounting firm for the Fund. The Trustees considered that the Transaction is not expected to have a material adverse impact on the nature, scope and overall quality of services provided to the Fund and its shareholders, including investment management, risk management, administrative, compliance, legal and other services, as a result of the Transaction. In that regard, the Trustees considered that Amundi is one of the largest asset managers globally, and that PIM may have access to additional research and portfolio management capabilities as a result of the Transaction and that PIM, as part of Amundi, is expected to have an enhanced global presence that may contribute to an increase in the overall scale and resources of PIM. Furthermore, in considering whether the Transaction would be expected to have a material adverse impact on the nature, scope and overall quality of services provided to the Fund and its shareholders, the Trustees considered the statements by representatives of Amundi that they expect the Chief Executive Officer and Chief Investment Officer of PIM to remain in their current positions and that they do not currently foresee major changes in the day-to-day investment management operations of PIM as a direct result of the Transaction, or the risk management, legal or compliance services provided by PIM, with respect to the Fund. They further considered the current incentive arrangements for key personnel of PIM that would continue after the closing of the Transaction. They also noted Amundi's stated intention to establish a new long-term incentive plan following the closing. The Trustees also took into account their experience in evaluating the proposed combination of Pioneer Investments and Santander Asset Management, which was announced in September, 2014 and abandoned in July, 2016. In light of, among other things, this experience, the Trustees determined that they were not able to identify any realistic alternatives to approving the New Management Agreement that would provide the level of services to the Fund and its shareholders that are expected to be provided by PIM after the closing of the Transaction. Based on these considerations, the Trustees concluded that the nature, extent and quality of services that PIM would continue to provide to the Fund under the New Management Agreement would be satisfactory and consistent with the terms of the New Management Agreement. 72 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 Performance of the Fund In considering the Fund's performance, the Trustees regularly reviewed and discussed throughout the year data prepared by PIM and information comparing the Fund's performance with the performance of its peer group of funds, as classified by each of Morningstar, Inc. (Morningstar) and Lipper, and the performance of the Fund's benchmark index. They also discussed the Fund's performance with PIM on a regular basis. The Trustees' regular reviews and discussions were factored into the Trustees' deliberations concerning the approval of the New Management Agreement. Management Fee and Expenses The Trustees noted that the stated management fees to be paid by the Fund are identical under the Current Management Agreement and the New Management Agreement. The Trustees considered information showing the fees and expenses of the Fund in comparison to the management fees and expense ratios of its peer group of funds as classified by Morningstar and also to the expense ratios of a peer group of funds selected on the basis of criteria determined by the Independent Trustees for this purpose using data provided by Strategic Insight Mutual Fund Research and Consulting, LLC (Strategic Insight), an independent third party. In all quintile rankings referred to below, first quintile is most favorable to the Fund's shareowners. To the extent applicable, the Trustees also considered the impact of transfer agency, sub-transfer agency, and other non-management fee expenses on the expense ratios of the Fund. The Trustees noted that they separately review the Fund's transfer agency, sub-transfer agency and intermediary arrangements and that the results of the most recent such review were considered in the consideration of the Fund's expense ratio. The Trustees considered that the Fund's management fee as of September 30, 2016 was in the third quintile relative to the management fees paid by other funds in its Morningstar category for the comparable period. The Trustees considered that the expense ratio of the Fund's Class A shares as of September 30, 2016 was in the second quintile relative to its Morningstar category and in the second quintile relative to its Strategic Insight peer group, in each case for the comparable period. The Trustees noted that PIM had agreed to waive fees and/or reimburse expenses in order to limit the ordinary operating expenses of the Fund. The Trustees reviewed management fees charged by PIM and PIAM to institutional and other clients, including publicly offered European funds sponsored by PIM's affiliates, unaffiliated U.S. registered investment companies (in a sub-advisory capacity), and unaffiliated foreign and domestic separate accounts. The Trustees also considered PIM's costs in providing services to the Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 73 Fund and PIM's and PIAM's costs in providing services to the other clients and considered the differences in management fees and profit margins for fund and non-fund services. In evaluating the fees associated with PIM's and PIAM's client accounts, the Trustees took into account the respective demands, resources and complexity associated with the Fund and other client accounts. The Trustees noted that in some instances the fee rates for those clients were lower than the management fee for the Fund and considered that, under both the Current Management Agreement and the New Management Agreement, PIM would perform additional services for the Fund that it does not provide to those other clients or services that are broader in scope, including oversight of the Fund's other service providers and activities related to compliance and the extensive regulatory and tax regimes to which the Fund is subject. The Trustees also considered the different risks associated with PIM's management of the Fund and PIM's and PIAM's management of the other client accounts. The Trustees concluded that the management fee payable by the Fund to PIM was reasonable in relation to the nature and quality of the services to be provided by PIM. Profitability The Trustees considered information provided by PIM regarding the profitability of PIM with respect to the advisory services provided by PIM to the Fund, including the methodology used by PIM in allocating certain of its costs to the management of the Fund. The Trustees also considered PIM's profit margin in connection with the overall operation of the Fund. They further reviewed the financial results, including the profit margins, realized by PIM and PIAM from non-fund businesses. The Trustees considered PIM's profit margins with respect to the Fund in comparison to the limited industry data available and noted that the profitability of any adviser was affected by numerous factors, including its organizational structure and method for allocating expenses. The Trustees concluded that PIM's profitability with respect to the management of the Fund was not unreasonable. Economies of Scale The Trustees considered PIM's views relating to economies of scale in connection with the Pioneer Funds as fund assets grow and the extent to which any such economies of scale are shared with the Fund and Fund shareholders. The Trustees recognize that economies of scale are difficult to identify and quantify, and that, among other factors that may be relevant, are the following: fee levels, expense subsidization, investment by PIM in research and analytical capabilities and PIM's commitment and resource allocation to the Fund. The Trustees noted that profitability also may be an indicator of the 74 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 availability of any economies of scale, although profitability may vary for other reasons including due to reductions in expenses. The Trustees concluded that economies of scale, if any, were being appropriately shared with the Fund. Other Benefits The Trustees considered the other benefits that PIM enjoys from its relationship with the Fund. The Trustees considered the character and amount of fees paid or to be paid by the Fund, other than under the Current Management Agreement or the New Management Agreement, for services provided by PIM and its affiliates. The Trustees further considered the revenues and profitability of PIM's businesses other than the Fund business. To the extent applicable, the Trustees also considered the benefits to the Fund and to PIM and its affiliates from the use of "soft" commission dollars generated by the Fund to pay for research and brokerage services. The Trustees considered that following the completion of the Transaction, PIM will be the principal U.S. asset management business of Amundi, and that Amundi's worldwide asset management business will manage over $1.38 trillion in assets (including the Pioneer Funds). This may create opportunities for PIM, PIAM and Amundi that derive from PIM's relationships with the Fund, including Amundi's ability to market the services of PIM globally. The Trustees noted that PIM may have access to additional research capabilities as a result of the Transaction and Amundi's enhanced global presence that may contribute to an increase of the overall scale of PIM. The Trustees considered that PIM and the Fund are expected to receive reciprocal intangible benefits from the relationship, including mutual brand recognition and, for the Fund, direct and indirect access to the resources of a large global asset manager. The Trustees concluded that any such benefits received by PIM as a result of its relationship with the Fund were reasonable. Conclusion After consideration of the factors described above as well as other factors, the Trustees, including the Independent Trustees, concluded that the New Management Agreement and the Interim Management Agreement for the Fund, including the fees payable thereunder, were fair and reasonable and voted to approve the New Management Agreement and the Interim Management Agreement, and to recommend that shareholders approve the New Management Agreement. Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 75 Trustees, Officers and Service Providers Trustees Advisory Trustee Thomas J. Perna, Chairman Lorraine H. Monchak* David R. Bock Benjamin M. Friedman Officers Margaret B.W. Graham Lisa M. Jones, President and Chief Marguerite A. Piret Executive Officer Fred J. Ricciardi Mark E. Bradley, Treasurer and Kenneth J. Taubes Chief Financial Officer Christopher J. Kelley, Secretary and Chief Legal Officer Investment Adviser and Administrator Pioneer Investment Management, Inc. Custodian and Sub-Administrator Brown Brothers Harriman & Co. Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Morgan, Lewis & Bockius LLP Shareowner Services and Transfer Agent Boston Financial Data 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. * Ms. Monchak is a non-voting Advisory Trustee. 76 Pioneer Global Multisector Income Fund | Semiannual Report | 4/30/17 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: -------------------------------------------------------------------------------- Pioneer Funds 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) 2017 Pioneer Investments 21910-09-0617 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. N/A (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. N/A (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. N/A (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. N/A (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. N/A (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. N/A (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. N/A 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 VII By (Signature and Title)* /s/ Lisa M. Jones Lisa M. Jones, President & Chief Executive Officer Date June 27, 2017 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 June 27, 2017 By (Signature and Title)* /s/ Mark E. Bradley Mark E. Bradley, Treasurer & Chief Accounting & Financial Officer Date June 27, 2017 * Print the name and title of each signing officer under his or her signature.