OMB APPROVAL OMB Number: 3235-0570 Expires: August 31, 2013 Estimated average burden hours per response.....18.9 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, 2011 through April 30, 2012 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 SHAREOWNERS. Pioneer Global Aggregate Bond Fund -------------------------------------------------------------------------------- Semiannual Report | April 30, 2012 -------------------------------------------------------------------------------- Ticker Symbols: Class A PGABX Class C PGCBX Class Y PGYBX [LOGO]PIONEER Investments(R) visit us: us.pioneerinvestments.com Table of Contents Letter to Shareowners 2 Portfolio Management Discussion 4 Portfolio Summary 8 Prices and Distributions 9 Performance Update 10 Comparing Ongoing Fund Expenses 13 Schedule of Investments 15 Financial Statements 40 Notes to Financial Statements 47 Approval of Investment Advisory Agreement 57 Trustees, Officers and Service Providers 61 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 1 President's Letter Dear Shareowner, The U.S. economy continued its recovery through the first quarter of 2012, even as broader global concerns weighed on investors. The U.S. unemployment rate fell to 8.1% in April, and some indicators suggest that it may continue to trend down. The housing market continued to improve, fueled in part by record-low mortgage rates. The risk of rising oil prices appeared to recede. The improved outlook helped U.S. equity markets to perform well in the first quarter, with the Standard & Poor's 500 Index rising by 12%. For bond investors, the riskier sectors of the bond market fared the best. The broad bond market, as measured by the Barclays Capital Aggregate Bond Index, rose by just 0.3%, while the high-yield bond market, as measured by the Bank of America Merrill Lynch High Yield Master II Index, rose by 5.15%. We are cautiously optimistic that the U.S. economy will continue to improve. But we are also closely monitoring macroeconomic concerns that could change the market's direction, such as the lingering debt woes in Europe, the state of the Chinese economy, and the U.S. government's fiscal situation. Clouds have continued to hover over Europe, as the exit of Greece from the Euro-zone remains a possibility. Meanwhile, China continues to face a potential slowdown in economic growth. In the U.S., tax increases and spending cuts scheduled to take effect at year-end should, unless fiscal policy changes, sharply reduce the budget deficit -- which would be very good for the country in the longer run -- but also could potentially stall U.S. economic growth in 2013. All of these considerations may lead to further market volatility. At Pioneer, we have long advocated the benefits of staying diversified and investing for the long term. The strategy has generally performed well for many investors. Our advice, as always, is to work closely with a trusted financial advisor to discuss your goals and work together to develop an investment strategy that meets your individual needs. There is no single best strategy that works for every investor. Pioneer's investment professionals focus on finding good opportunities to invest in both equity and bond markets using the same disciplined investment approach we have used since 1928. Our strategy is to identify undervalued individual securities with the greatest potential for success, carefully weighing risk against reward. Our teams of investment professionals continually 2 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 monitor and analyze the relative valuations of different sectors and securities globally to help build portfolios that we believe can help you achieve your investment goals. We invite you to learn more about Pioneer and our time-tested approach to investing by consulting with your financial advisor or visiting us online at us.pioneerinvestments.com. We greatly appreciate your trust in us, and we thank you for investing with Pioneer. Sincerely, /s/ Daniel K. Kingsbury Daniel K. Kingsbury President and CEO Pioneer Investment Management USA, Inc. Any information in this shareowner report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 3 Portfolio Management Discussion | 4/30/12 Rising confidence that the world economic recovery was gathering strength helped to lift the performance of global fixed-income investments early in the six-month period ended April 30, 2012. Confidence was shaken somewhat late in the period, however, amid renewed concerns about European sovereign-debt problems and sluggish job growth in the U.S. In the following interview, Charles Melchreit discusses the performance of Pioneer Global Aggregate Bond Fund during the six-month period. Mr. Melchreit, vice president and portfolio manager at Pioneer, is responsible for the daily management of the Fund, along with Mr. Tanguy Le Saout, Head of European Fixed-Income Portfolio Management and European Fixed-Income Research at Pioneer. Q How did the Fund perform during the six months ended April 30, 2012? A Pioneer Global Aggregate Bond Fund Class A shares returned 2.18% at net asset value during the six months ended April 30, 2012, while the Fund's benchmark, the Barclays Capital Global Aggregate Bond Index (the Barclays Index), returned 0.96%. During the same six-month period, the average return of the 193 mutual funds in Lipper's Global Income Funds category was 2.80%. At the end of the period on April 30, 2012, the 30-day standardized SEC yield of the Fund's Class A shares was 2.23% with fees waived, and 1.79% without fees waived. Q What was the investment environment like during the six months ended April 30, 2012? A A generally improving global economy encouraged investment in the global fixed-income markets early on in the six-month period, with investors demonstrating confidence in the fiscal and monetary policies of various central banks that had been implemented to encourage economic growth. In the United States, statistics measuring both economic growth and employment trends appeared to be getting better following troubling evidence of some weakening during the summer and early fall of 2011. While the sovereign-debt problems in some European countries, most notably Greece and Spain, caused cycles of investor angst, followed by relief, the markets reacted positively to a change in monetary policy by the European Central Bank (ECB), which moved to inject added liquidity into the financial system. In Asia, investors had been worried about a "hard landing" in China after a period of double-digit growth rates in that country. However, the Chinese government's monetary policies appeared to be successful in slowing growth to a more moderate pace, without plunging the country's economy into recession. 4 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 The favorable signs appeared to weaken, however, in the early spring of 2012. In the United States, job growth began weakening after the healthier rates during the winter. Rising world oil prices also fed fears that higher transportation and energy costs could impede growth in consumer spending in the United States and Asia. In Europe, renewed fears that austerity programs were pushing the economies there into recession led to a political backlash against the programs. As a result, the governments of the Netherlands, France and Greece all saw new leadership elected. Q How did you position the Fund in that environment during the six months ended April 30, 2012? A During the period we believed that the world's fundamentally strongest economies were in the United States, select emerging markets, and commodity-exporting countries such as Canada, Australia, and Norway. Consistent with that view, we placed the greatest emphasis in those areas when managing the Fund's portfolio. We increased the Fund's weighting in the United States to approximately 54% of net assets at the end of the period on April 30, 2012, while also raising portfolio exposure to some of the more financially solid emerging market nations, including Indonesia, Korea, Malaysia, Mexico and the Philippines. The Fund remained underweighted in Europe because of the region's well-documented debt problems. Among the more financially troubled European countries, the Fund had no investments in the government debt of either Greece or Portugal, and was significantly underweighted in the government debt of Italy and Spain. Ireland was the only peripheral European nation where the Fund had noteworthy investments in government debt, as we believed that the national government in Ireland had done a good job of managing the country during the financial crisis. In developed markets, we overweighted the Fund to corporate bonds and mortgage-backed securities, while underweighting government securities. In emerging markets, we emphasized government debt. As of April 30, 2012, the Fund had 28% of its net assets invested in mortgage-backed securities, 17.8% of net assets invested in investment-grade corporate debt, and another 7.7% of net assets allocated to U.S. high-yield corporate debt. International investment-grade debt represented 28.2% of the Fund's net assets, while emerging market and international high-yield debt combined to account for 28.2% of net assets. Q How did the Fund's positioning during the six-month period ended April 30, 2012, affect performance? A The Fund's sector allocations helped performance as corporate bonds and other risk-related investments were in favor during the six-month period. The Fund's significant exposure to U.S. corporate bonds supported results, Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 5 as did investments in non-government agency collateralized mortgage obligations and commercial mortgages. The Fund's currency weightings also aided performance relative to the Barclays Index, particularly an overweighted position in the U.S. dollar and underweights in the Japanese yen and the euro. The positive effects of these currency exposures helped to offset the negative effects of the Fund's overweighted positions in the Canadian, Norwegian and Swedish currencies. We eventually reduced portfolio exposure to the Canadian dollar during the six-month period. On the negative side, the Fund's positioning relative to interest rates detracted somewhat from performance during the period. As interest rates continued to decline, our emphasis on shorter-maturity investments in the portfolio held back results when longer-maturity investments outperformed. During the period we maintained an average portfolio duration that was shorter than that of the benchmark, consistent with our view that there is more potential price risk in longer-maturity securities at a time when an economy is growing. (Duration is a measurement of price sensitivity to changes in interest rates.) Normally, bond prices decline when interest rates rise, which often occurs when an economy is improving. Conversely, bond prices tend to rise when interest rates decline. At the end of the semiannual reporting period on April 30, 2012, the Fund's effective duration was 4.68 years. Q What is your investment outlook? A We continue to be cautiously positive about growth in the United States, believing that the economy will grow at an annual pace of 2% in 2012, and we expect to continue to overweight the Fund in domestic investments. While the rate of recovery in the U.S. may be slow, there does appear to be a recovery. In addition, we are encouraged by improvements in the employment market and a pick-up in construction spending, both of which should add to the foundation for future growth. Moreover, consumer credit has improved and the outlook for consumers has been trending positive. That said, potential obstacles do remain on the domestic front, most notably the lack of political consensus surrounding fiscal policy and dealing with the nation's debt. At the same time, while the Federal Reserve Board's accommodative monetary policy has been supporting growth, we are concerned that the policy could set the table for future inflation. We may consider increasing the Fund's allocations to Asia and select emerging markets, where we think interest rates may begin to decline and bond prices may rise as central banks in the region start relaxing some of their tighter monetary policies. 6 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 In contrast, we plan to have the Fund remain significantly underweighted in Europe, where the situation is much less encouraging. The austerity policies put into place to solve the sovereign-debt crisis have led to a more volatile political landscape in several European nations. We intend to monitor the situation very carefully. As the political situation on the Continent evolves, we think European banks might start to present more attractive investment opportunities. Please refer to the Schedule of Investments on pages 15-39 for a full listing of Fund securities. The portfolio may invest in mortgage-backed securities, which during times of fluctuating interest rates may increase or decrease more than other fixed-income securities. Mortgage-backed securities are also subject to pre-payments. The portfolio may invest in derivative securities, which may include futures and options. These types of instruments can increase price fluctuation. 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 risk. Investing in foreign and/or emerging market securities involves risks relating to interest rates, currency exchange rates, economic, and political conditions. 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. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. 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. These statements should not be relied upon for any other purposes. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 7 Portfolio Summary | 4/30/12 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 32.4% U.S. Corporate Bonds 22.8% Collateralized Mortgage Obligations 16.3% U.S. Government Securities 11.1% International Corporate Bonds 6.8% Asset Backed Securities 3.5% Municipal Bonds 2.7% Convertible Corporate Bonds 1.4% Temporary Cash Investment 1.0% U.S. Preferred Stocks 1.0% Convertible Preferred Stocks 1.0% 10 Largest Holdings -------------------------------------------------------------------------------- (As a percentage of total long-term holdings)* 1. Fannie Mae, 5.0%, 7/1/40 3.32% 2. Indonesia Treasury Bond, 7.375%, 9/15/16 2.06 3. Poland Government Bond, 5.25%, 10/25/17 1.57 4. Japan Government Two Year Bond, 0.2%, 8/15/13 1.53 5. Japan Government Ten Year Bond, 1.7%, 9/20/16 1.39 6. Sweden Government Bond, 5.5%, 10/8/12 1.29 7. Japan Government Twenty Year Bond, 1.5%, 3/20/19 1.26 8. Federal Home Loan Mortgage Corp., 5.0%, 10/1/38 0.96 9. France Government Bond OAT, 3.25%, 10/25/21 0.95 10. Merrill Lynch Financial Assets, Inc., Floating Rate Note, 1/12/40 0.94 * This list excludes temporary cash investments and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 8 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 Prices and Distributions | 4/30/12 Net Asset Value per Share -------------------------------------------------------------------------------- Class 4/30/12 10/31/11 A $11.26 $11.22 -------------------------------------------------------------------------------- C $11.28 $11.23 -------------------------------------------------------------------------------- Y $11.35 $11.30 -------------------------------------------------------------------------------- Distributions per Share: 11/1/11-4/30/12 -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains A $0.1770 $0.0051 $0.0183 -------------------------------------------------------------------------------- C $0.1232 $0.0051 $0.0183 -------------------------------------------------------------------------------- Y $0.1781 $0.0051 $0.0183 -------------------------------------------------------------------------------- Index Definitions -------------------------------------------------------------------------------- The Barclays Capital Global Aggregate Bond Index 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 10-12. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 9 Performance Update | 4/30/12 Class A Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Global Aggregate Bond Fund at public offering price, compared to that of the Barclays Capital Global Aggregate Bond Index. Average Annual Total Returns (As of April 30, 2012) -------------------------------------------------------------------------------- Net Asset Public Offering Period Value (NAV) Price (POP) -------------------------------------------------------------------------------- Life-of-Class (12/27/07) 6.29% 5.18% 1 Year 3.04 -1.58 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2012) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.07% 1.00% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global Barclays Capital Aggregate Bond Fund Global Aggregate Bond Index ------------------- --------------------------- 12/07 9,550 10,000 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 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 contractual expense limitations currently in effect through 3/1/13 for Class A shares. There can be no assurance that Pioneer will extend the expense limitations beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 10 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 Performance Update | 4/30/12 Class C Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Global Aggregate Bond Fund, compared to that of the Barclays Capital Global Aggregate Bond Index. Average Annual Total Returns (As of April 30, 2012) -------------------------------------------------------------------------------- If If Period Held Redeemed -------------------------------------------------------------------------------- Life-of-Class (12/27/07) 5.42% 5.42% 1 Year 2.18 2.18 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2012) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.94% 1.90% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global Barclays Capital Aggregate Bond Fund Global Aggregate Bond Index ------------------- --------------------------- 12/07 10,000 10,000 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 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 contractual expense limitations currently in effect through 3/1/13 for Class C shares. There can be no assurance that Pioneer will extend the expense limitations beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 11 Performance Update| 4/30/12 Class Y Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Pioneer Global Aggregate Bond Fund, compared to that of the Barclays Capital Global Aggregate Bond Index. Average Annual Total Returns (As of April 30, 2012) -------------------------------------------------------------------------------- If If Period Held Redeemed -------------------------------------------------------------------------------- Life-of-Class (12/27/07) 6.52% 6.52% 1 Year 3.56 3.56 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2012) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 1.55% 0.75% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Global Barclays Capital Aggregate Bond Fund Global Aggregate Bond Index ------------------- --------------------------- 12/07 5,000,000 5,000,000 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 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 contractual expense limitations currently in effect through 3/1/13 for Class Y shares. There can be no assurance that Pioneer will extend the expense limitations beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 12 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 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 Aggregate Bond Fund Based on actual returns from November 1, 2011, through April 30, 2012. -------------------------------------------------------------------------------- Share Class A C Y -------------------------------------------------------------------------------- Beginning Account Value $1,000.00 $1,000.00 $1,000.00 on 11/1/11 -------------------------------------------------------------------------------- Ending Account Value $1,021.80 $1,017.70 $1,022.60 (after expenses) on 4/30/12 -------------------------------------------------------------------------------- Expenses Paid During Period* $5.03 $9.53 $4.32 -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.00%, 1.90%, and 0.86% for Class A, Class C, and Class Y shares respectively, multiplied by the average account value over the period, multiplied by 182/366. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 13 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Global Aggregate Bond Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from November 1, 2011, through April 30, 2012. -------------------------------------------------------------------------------- Share Class A C Y -------------------------------------------------------------------------------- Beginning Account Value $1,000.00 $1,000.00 $1,000.00 on 11/1/11 -------------------------------------------------------------------------------- Ending Account Value $1,019.89 $1,015.42 $1,020.59 (after expenses) on 4/30/12 -------------------------------------------------------------------------------- Expenses Paid During Period* $5.02 $9.52 $4.32 -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.00%, 1.90%, and 0.86% for Class A, Class C, and Class Y shares respectively, multiplied by the average account value over the period, multiplied by 182/366. 14 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 Schedule of Investments | 4/30/12 (unaudited) ------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------ CONVERTIBLE CORPORATE BONDS -- 1.3% ENERGY -- 0.0% Coal & Consumable Fuels -- 0.0% 20,000 BB-/NR Alpha Appalachia Holdings, Inc., 3.25%, 8/1/15 $ 18,300 ----------- Total Energy $ 18,300 ------------------------------------------------------------------------------------------------------ CAPITAL GOODS -- 0.4% Electrical Components & Equipment -- 0.2% 56,000 B/B2 General Cable Corp., 4.5%, 11/15/29 (Step) $ 59,500 ------------------------------------------------------------------------------------------------------ Construction & Farm Machinery & Heavy Trucks -- 0.2% 75,000 B/NR Navistar International Corp., 3.0%, 10/15/14 $ 77,344 ----------- Total Capital Goods $ 136,844 ------------------------------------------------------------------------------------------------------ HEALTH CARE EQUIPMENT & SERVICES -- 0.3% Health Care Equipment -- 0.3% 75,000 BB+/NR Hologic, Inc., 2.0%, 12/15/37 (Step) $ 80,812 ----------- Total Health Care Equipment & Services $ 80,812 ------------------------------------------------------------------------------------------------------ SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 0.6% Semiconductor Equipment -- 0.3% 75,000 BBB-/Baa1 Lam Research Corp., 1.25%, 5/15/18 (144A) $ 75,000 ------------------------------------------------------------------------------------------------------ Semiconductors -- 0.3% 85,000 A-/NR Intel Corp., 2.95%, 12/15/35 $ 96,794 ----------- Total Semiconductors & Semiconductor Equipment $ 171,794 ------------------------------------------------------------------------------------------------------ TOTAL CONVERTIBLE CORPORATE BONDS (Cost $390,126) $ 407,750 ------------------------------------------------------------------------------------------------------ PREFERRED STOCKS -- 1.0% BANKS -- 0.4% Diversified Banks -- 0.4% 4,000 6.00 BBB+/A3 US Bancorp, Floating Rate Note, 12/31/99 (Perpetual) $ 103,280 ----------- Total Banks $ 103,280 ------------------------------------------------------------------------------------------------------ DIVERSIFIED FINANCIALS -- 0.6% Other Diversified Financial Services -- 0.6% 6,527 7.88 BB/Baa3 Citigroup Capital XIII, Floating Rate Note, 10/30/40 $ 173,814 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 15 Schedule of Investments | 4/30/12 (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- Other Diversified Financial Services -- (continued) 850 8.12 CCC+/B3 GMAC Capital Trust I, Floating Rate Note, 2/15/40 $ 20,358 ----------- $ 194,172 ------------------------------------------------------------------------------------------------------- Total Diversified Financials $ 194,172 ------------------------------------------------------------------------------------------------------- TOTAL PREFERRED STOCKS (Cost $285,928) $ 297,452 ------------------------------------------------------------------------------------------------------- CONVERTIBLE PREFERRED STOCK -- 0.5% BANKS -- 0.5% Diversified Banks -- 0.5% 140 BBB+/Ba1 Wells Fargo & Co., 7.5%, 12/31/99 (Perpetual) $ 156,804 ----------- Total Banks $ 156,804 ------------------------------------------------------------------------------------------------------- TOTAL CONVERTIBLE PREFERRED STOCK (Cost $146,838) $ 156,804 ------------------------------------------------------------------------------------------------------- ASSET BACKED SECURITIES -- 3.3% AUTOMOBILES & COMPONENTS -- 0.7% Auto Parts & Equipment -- 0.5% CAD 150,000 AAA/NR Ford Auto Securitization Trust, 2.431%, 11/15/14 (144A) $ 153,734 ------------------------------------------------------------------------------------------------------- Automobile Manufacturers -- 0.2% 20,000 NR/Aa1 Santander Drive Auto Receivables Trust, 2.66%, 1/15/16 $ 20,094 30,000 A/A1 Santander Drive Auto Receivables Trust, 3.78%, 11/15/17 30,739 ----------- $ 50,833 ----------- Total Automobiles & Components $ 204,567 ------------------------------------------------------------------------------------------------------- RETAILING -- 0.2% Automotive Retail -- 0.2% EURO 45,550 1.66 AAA/Aaa E-CARAT, Floating Rate Note, 10/18/18 $ 60,543 EURO 7,255 1.71 AAA/NR Volkswagen Car Lease, Floating Rate Note, 8/21/15 9,615 ----------- $ 70,158 ----------- Total Retailing $ 70,158 ------------------------------------------------------------------------------------------------------- BANKS -- 1.5% Diversified Banks -- 0.0% 12,852 0.33 NR/Aa1 Wells Fargo Home Equity Trust, Floating Rate Note, 4/25/37 $ 12,491 ------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- 1.5% 24,700 NR/A1 Bombardier Capital Mortgage Securitization Corp., 6.65%, 4/15/28 $ 26,031 The accompanying notes are an integral part of these financial statements. 16 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 ---------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 79,260 A/B2 Citicorp Residential Mortgage Securities, Inc., 5.836%, 7/25/36 (Step) $ 78,981 2,922 0.34 BBB/Baa3 Citigroup Mortgage Loan Trust, Inc., Floating Rate Note, 1/25/37 2,857 CAD 133,023 NR/Aaa CNH Capital Canada Receivables Trust, 1.694%, 7/15/14 (144A) 134,754 17,675 0.61 AAA/Baa2 Countrywide Asset-Backed Certificates, Floating Rate Note, 1/25/36 16,767 29,925 4.46 BBB/Ba1 Countrywide Asset-Backed Certificates, Floating Rate Note, 10/25/35 28,812 27,414 5.07 AAA/B2 Countrywide Asset-Backed Certificates, Floating Rate Note, 2/25/36 24,801 25,388 0.59 BBB/Baa3 Countrywide Home Equity Loan Trust, Floating Rate Note, 11/15/28 24,276 50,000 0.64 AAA/Aa2 First NLC Trust, Floating Rate Note, 9/25/35 46,711 6,119 0.88 A/A2 GSAMP Trust, Floating Rate Note, 3/25/35 5,797 5,176 0.62 AAA/Aa1 GSAMP Trust, Floating Rate Note, 9/25/35 5,059 3,212 0.30 CCC/Ba3 Morgan Stanley ABS Capital I, Floating Rate Note, 12/25/36 1,762 230 0.29 CCC/Caa2 Morgan Stanley IXIS Real Estate Capital Trust, Floating Rate Note, 11/25/36 76 31,877 0.50 AAA/Aa3 Option One Mortgage Loan Trust, Floating Rate Note, 11/25/35 30,458 17,919 5.91 AA/A3 Origen Manufactured Housing, Floating Rate Note, 1/15/35 18,777 18,628 0.68 AA+/A3 Residential Asset Securities Corp., Floating Rate Note, 8/25/35 17,834 ----------- $ 463,753 ----------- Total Banks $ 476,244 ---------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.9% Other Diversified Financial Services -- 0.2% 4,967 NR/NR DT Auto Owner Trust, 5.92%, 10/15/15 (144A) $ 5,030 44,092 AAA/A2 Sierra Receivables Funding Co., LLC, 5.84%, 5/20/18 (144A) 44,172 ----------- $ 49,202 ---------------------------------------------------------------------------------------------------------- Specialized Finance -- 0.4% 99,625 BBB+/Baa1 Dominos Pizza Master Issuer LLC, 5.216%, 1/25/42 (144A) $ 103,438 26,147 NR/Baa1 Irwin Home Equity Corp., 5.32%, 6/25/35 (Step) 24,780 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 17 Schedule of Investments | 4/30/12 (unaudited) (continued) ------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------ Specialized Finance -- (continued) 9,559 0.59 AAA/Aaa New Century Home Equity Loan Trust, Floating Rate Note, 3/25/35 $ 8,835 ----------- $ 137,053 ------------------------------------------------------------------------------------------------------ Consumer Finance -- 0.3% GBP 50,000 1.27 AAA/Aaa Chester Asset Receivables Dealings, Floating Rate Note, 4/15/16 $ 79,618 ----------- Total Diversified Financials $ 265,873 ------------------------------------------------------------------------------------------------------ TOTAL ASSET BACKED SECURITIES (Cost $1,011,122) $ 1,016,842 ------------------------------------------------------------------------------------------------------ COLLATERALIZED MORTGAGE OBLIGATIONS -- 15.4% BANKS -- 9.1% Thrifts & Mortgage Finance -- 9.1% 23,247 NR/Ba3 Banc of America Alternative Loan Trust, 5.0%, 7/25/19 $ 23,570 35,515 NR/B1 Banc of America Alternative Loan Trust, 5.5%, 11/25/19 35,929 74,872 NR/Baa2 Banc of America Alternative Loan Trust, 5.5%, 9/25/33 76,161 31,081 AAA/Baa2 Banc of America Alternative Loan Trust, 5.75%, 4/25/33 32,555 20,262 NR/Baa3 Banc of America Alternative Loan Trust, 6.0%, 3/25/34 20,811 23,721 0.69 NR/A1 Banc of America Alternative Loan Trust, Floating Rate Note, 12/25/33 22,591 39,286 B-/NR Banc of America Funding Corp., 5.5%, 1/25/36 39,026 104,065 NR/Ba3 Bayview Commercial Asset Trust, 3.855%, 9/25/37 (Step) (144A) 9,366 163,370 3.57 NR/Ba3 Bayview Commercial Asset Trust, Floating Rate Note, 7/25/37 (144A) 11,403 50,000 0.41 BBB+/Aa2 Citigroup Commercial Mortgage Trust, Floating Rate Note, 4/15/22 (144A) 46,028 100,000 5.03 NR/Aa1 Citigroup Commercial Mortgage Trust, Floating Rate Note, 9/20/51 (144A) 98,552 34,353 NR/Baa1 Citigroup Mortgage Loan Trust, Inc., 6.75%, 8/25/34 36,597 100,000 NR/Aaa Commercial Mortgage Pass Through Certificates, 4.063%, 12/10/44 101,871 45,094 AAA/Ba1 Countrywide Alternative Loan Trust, 4.25%, 4/25/34 44,899 105,000 AAA/Baa2 Countrywide Alternative Loan Trust, 5.0%, 7/25/19 106,226 The accompanying notes are an integral part of these financial statements. 18 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 -------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value -------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 11,151 BB/B2 Countrywide Alternative Loan Trust, 5.5%, 1/25/35 $ 11,305 20,373 BB/NR Countrywide Alternative Loan Trust, 5.5%, 8/25/34 19,188 18,490 0.69 B-/NR Countrywide Alternative Loan Trust, Floating Rate Note, 8/25/18 17,249 26,071 4.82 AAA/Ba1 Countrywide Home Loan Mortgage Pass Through Trust, Floating Rate Note, 12/25/33 24,895 GBP 16,171 2.29 NR/Aaa Darrowby Plc, Floating Rate Note, 12/20/43 26,266 1,400,000 1.37 BBB/A3 Extended Stay America Trust, Floating Rate Note, 1/5/16 (144A) 10,345 12,489 CCC/NR First Horizon Asset Securities, Inc., 6.0%, 5/25/36 12,067 50,000 NR/Aaa GS Mortgage Securities Corp., II, 5.56%, 11/10/39 56,678 103,116 2.75 AAA/NR GSR Mortgage Loan Trust, Floating Rate Note, 8/25/33 101,732 35,000 NR/Aaa JP Morgan Chase Commercial Mortgage Securities Corp., 4.171%, 8/15/46 38,204 48,755 0.60 NR/Ba1 JP Morgan Chase Commercial Mortgage Securities Corp., Floating Rate Note, 11/15/18 (144A) 40,467 15,000 5.15 AA+/Aaa JP Morgan Chase Commercial Mortgage Securities Corp., Floating Rate Note, 7/12/35 15,075 100,000 4.65 BBB+/Baa1 JP Morgan Chase Commercial Mortgage Securities Corp., Floating Rate Note, 7/15/28 (144A) 98,186 22,012 BBB/Ba2 JP Morgan Mortgage Trust, 6.0%, 9/25/34 22,503 18,321 4.89 AAA/A2 JP Morgan Mortgage Trust, Floating Rate Note, 2/25/34 18,478 15,750 4.44 AAA/A3 JP Morgan Mortgage Trust, Floating Rate Note, 2/25/35 15,791 179,296 3.06 AAA/NR JP Morgan Mortgage Trust, Floating Rate Note, 5/25/34 175,000 34,000 5.62 BBB+/NR LB-UBS Commercial Mortgage Trust, Floating Rate Note, 10/15/35 (144A) 33,581 13,292 5.41 AAA/Aaa Lehman Brothers Small Balance Commercial, Floating Rate Note, 12/25/36 (144A) 13,147 9,330 A-/NR MASTR Alternative Loans Trust, 4.5%, 1/25/15 9,321 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 19 Schedule of Investments | 4/30/12 (unaudited) (continued) --------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value --------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 10,091 B+/NR MASTR Alternative Loans Trust, 5.5%, 10/25/19 $ 10,353 22,095 AAA/NR MASTR Alternative Loans Trust, 5.5%, 2/25/35 21,792 57,646 B/NR MASTR Alternative Loans Trust, 6.0%, 7/25/34 57,359 77,987 6.80 A-/NR MASTR Seasoned Securities Trust, Floating Rate Note, 9/25/32 81,957 5,181 AAA/Aaa Merrill Lynch Mortgage Trust, 4.556%, 6/12/43 5,194 27,676 0.70 AAA/Baa2 MLCC Mortgage Investors, Inc., Floating Rate Note, 3/25/30 24,177 20,303 0.47 AAA/A3 MLCC Mortgage Investors, Inc., Floating Rate Note, 4/25/29 18,036 100,000 NR/NR Morgan Stanley Reremic Trust, 5.0%, 11/26/36 (144A) 96,915 GBP 117,680 1.48 AAA/NR Paragon Secured Finance Plc, Floating Rate Note, 11/15/35 169,597 8,624 B+/B2 RAAC Series, 6.0%, 1/25/32 8,801 AUD 82,791 4.96 AAA/A1 Rams Mortgage Securities Pty, Ltd., Floating Rate Note, 7/21/35 82,190 20,781 B-/NR Residential Asset Securitization Trust, 5.5%, 2/25/35 20,897 23,053 B/NR Residential Asset Securitization Trust, 5.5%, 7/25/35 20,873 37,833 BBB+/NR Residential Asset Securitization Trust, 5.75%, 12/25/34 38,765 75,798 BB/NR Residential Funding Mortgage Securities, Inc., 5.25%, 8/25/35 75,637 26,130 0.46 AAA/Ba3 Sequoia Mortgage Trust, Floating Rate Note, 3/20/35 22,695 67,059 2.87 AAA/A3 Structured Asset Securities Corp., Floating Rate Note, 10/25/33 65,265 50,000 AAA/Aa1 Timberstar Trust, 5.668%, 10/15/36 (144A) 55,882 5,577,722 0.14 AAA/Aaa Wachovia Bank Commercial Mortgage Trust, Floating Rate Note, 6/15/45 3,977 92,368 2.45 AA/NR WaMu Mortgage Pass Through Certificates, Floating Rate Note, 1/25/35 89,140 69,642 2.59 AA+/Ba3 WaMu Mortgage Pass Through Certificates, Floating Rate Note, 6/25/34 68,762 2,109 2.48 CC/NR WaMu Mortgage Pass Through Certificates, Floating Rate Note, 9/25/35 2,079 90,922 NR/Aaa Wells Fargo Commercial Mortgage Trust, 3.349%, 11/15/43 (144A) 95,302 The accompanying notes are an integral part of these financial statements. 20 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 -------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value -------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 13,953 AAA/Baa3 Wells Fargo Mortgage Backed Securities Trust, 4.75%, 12/25/18 $ 14,401 21,311 AAA/A1 Wells Fargo Mortgage Backed Securities Trust, 5.0%, 11/25/36 22,211 18,951 BB-/B1 Wells Fargo Mortgage Backed Securities Trust, 5.5%, 10/25/35 19,187 49,557 NR/B1 Wells Fargo Mortgage Backed Securities Trust, 5.75%, 3/25/36 49,005 18,443 CCC/B1 Wells Fargo Mortgage Backed Securities Trust, 6.0%, 8/25/36 18,411 22,361 2.64 BBB-/B1 Wells Fargo Mortgage Backed Securities Trust, Floating Rate Note, 3/25/35 21,699 50,000 BBB/NR WFDB Commercial Mortgage Trust, 5.914%, 7/5/24 (144A) 51,582 ----------- $ 2,797,204 ----------- Total Banks $ 2,797,204 -------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 4.3% Other Diversified Financial Services -- 2.2% 19,219 A+/NR Banc of America Mortgage Securities, Inc., 5.5%, 11/25/34 $ 20,073 30,552 AAA/NR Banc of America Mortgage Securities, Inc., 5.75%, 1/25/35 31,299 14,451 2.75 AAA/NR Banc of America Mortgage Securities, Inc., Floating Rate Note, 6/25/34 14,369 10,219 5.06 AA-/NR Banc of America Mortgage Securities, Inc., Floating Rate Note, 9/25/35 9,843 6,761 NR/B1 Citicorp Mortgage Securities, Inc., 5.0%, 2/25/36 6,898 100,000 5.57 NR/Aa2 DBUBS Mortgage Trust, Floating Rate Note, 8/10/44 (144A) 107,872 GBP 49,795 1.32 AA+/Aaa Epic Plc, Floating Rate Note, 10/28/16 77,194 178,022 AAA/NR Residential Accredit Loans, Inc., 4.0%, 3/25/34 181,686 49,328 AAA/Ba1 Residential Accredit Loans, Inc., 4.25%, 1/25/34 49,943 45,988 NR/Ba1 Residential Accredit Loans, Inc., 5.0%, 9/25/19 46,120 15,883 NR/B3 Residential Accredit Loans, Inc., 5.5%, 12/25/34 16,030 53,133 AAA/NR Residential Accredit Loans, Inc., 6.0%, 10/25/34 53,718 20,788 0.79 AAA/Ba1 Residential Accredit Loans, Inc., Floating Rate Note, 1/25/34 19,788 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 21 Schedule of Investments | 4/30/12 (unaudited) (continued) --------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value --------------------------------------------------------------------------------------------------------- Other Diversified Financial Services -- (continued) 33,528 0.79 NR/Baa1 Residential Accredit Loans, Inc., Floating Rate Note, 10/25/17 $ 31,459 ----------- $ 666,292 --------------------------------------------------------------------------------------------------------- Specialized Finance -- 2.0% 2,354 AAA/NR CW Capital Cobalt, Ltd., 5.174%, 8/15/48 $ 2,350 CAD 250,000 4.74 NR/Aaa Merrill Lynch Financial Assets, Inc., Floating Rate Note, 1/12/40 270,059 CAD 199,159 4.71 AAA/Aaa Merrill Lynch Financial Assets, Inc., Floating Rate Note, 3/12/49 205,150 EURO 100,000 2.01 AAA/Aaa Permanent Master Issuer Plc, Floating Rate Note, 7/15/42 132,305 ----------- $ 609,864 --------------------------------------------------------------------------------------------------------- Investment Banking & Brokerage -- 0.1% 50,000 5.94 BB+/A3 Bear Stearns Commercial Mortgage Securities, Floating Rate Note, 9/11/38 $ 44,268 ----------- Total Diversified Financials $ 1,320,424 --------------------------------------------------------------------------------------------------------- REAL ESTATE -- 1.0% Mortgage REIT's -- 1.0% 14,648 1.59 AA+/Aa2 Credit Suisse First Boston Mortgage Securities Corp., Floating Rate Note, 12/25/33 $ 13,892 50,000 6.45 CCC-/B3 Credit Suisse First Boston Mortgage Securities Corp., Floating Rate Note, 9/15/34 (144A) 33,677 25,000 4.49 NR/A3 FREMF Mortgage Trust, Floating Rate Note, 1/25/46 (144A) 24,765 25,000 4.94 NR/A3 FREMF Mortgage Trust, Floating Rate Note, 4/25/44 (144A) 25,555 50,000 5.05 NR/A3 FREMF Mortgage Trust, Floating Rate Note, 7/25/44 (144A) 52,364 25,000 4.44 A+/NR FREMF Mortgage Trust, Floating Rate Note, 7/25/48 (144A) 25,490 75,000 4.31 NR/Baa2 FREMF Mortgage Trust, Floating Rate Note, 9/25/44 (144A) 67,168 45,000 5.33 NR/NR FREMF Mortgage Trust, Floating Rate Note, 9/25/45 (144A) 47,361 ----------- $ 290,272 ----------- Total Real Estate $ 290,272 --------------------------------------------------------------------------------------------------------- GOVERNMENT -- 1.0% 115,569 NR/NR Fannie Mae REMICS, 6.0%, 3/25/35 $ 124,714 14,102 NR/NR Fannie Mae REMICS, 6.25%, 6/25/44 14,109 The accompanying notes are an integral part of these financial statements. 22 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------- Government -- (continued) 45,625 NR/NR Freddie Mac REMICS, 5.5%, 2/15/33 $ 46,969 50,000 NR/NR Government National Mortgage Association, 4.5%, 9/20/39 56,320 961,677 0.68 NR/NR Government National Mortgage Association, Floating Rate Note, 11/16/51 43,282 299,355 1.10 NR/NR Government National Mortgage Association, Floating Rate Note, 8/16/52 24,248 ----------- $ 309,642 ----------- Total Government $ 309,642 ---------------------------------------------------------------------------------------------------- TOTAL COLLATERALIZED MORTGAGE OBLIGATIONS (Cost $4,700,553) $ 4,717,542 ---------------------------------------------------------------------------------------------------- CORPORATE BONDS -- 28.0% ENERGY -- 4.2% Oil & Gas Drilling -- 0.1% 25,000 BBB+/Baa1 Pride International, Inc., 6.875%, 8/15/20 $ 30,787 ---------------------------------------------------------------------------------------------------- Oil & Gas Equipment & Services -- 0.3% 50,000 BB/Ba3 Exterran Holdings, Inc., 7.25%, 12/1/18 $ 48,000 25,000 BBB/Baa2 Weatherford International, Ltd., Bermuda, 5.95%, 4/15/42 25,925 25,000 BBB/Baa2 Weatherford International, Ltd., Bermuda, 9.625%, 3/1/19 33,072 ----------- $ 106,997 ---------------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 1.4% 10,000 BBB+/Baa1 Canadian Natural Resources, Ltd., 5.9%, 2/1/18 $ 11,938 50,000 B/B3 Carrizo Oil & Gas, Inc., 8.625%, 10/15/18 53,000 100,000 B-/B3 Chaparral Energy, Inc., 8.25%, 9/1/21 106,500 90,000 B/B2 Linn Energy LLC, 6.25%, 11/1/19 (144A) 88,650 51,000 B/B2 Linn Energy LLC, 8.625%, 4/15/20 55,718 23,000 BBB/Baa2 Marathon Oil Corp., 5.9%, 3/15/18 27,089 70,000 BB-/B1 Plains Exploration & Production Co., 6.75%, 2/1/22 72,800 ----------- $ 415,695 ---------------------------------------------------------------------------------------------------- Oil & Gas Refining & Marketing -- 0.3% 40,000 A/A2 Motiva Enterprises LLC, 5.75%, 1/15/20 (144A) $ 46,688 25,000 BBB/Baa2 Spectra Energy Capital LLC, 6.2%, 4/15/18 29,402 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 23 Schedule of Investments | 4/30/12 (unaudited) (continued) --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value --------------------------------------------------------------------------------------------------- Oil & Gas Refining & Marketing -- (continued) 21,000 BBB/Baa2 Valero Energy Corp., 9.375%, 3/15/19 $ 27,769 ----------- $ 103,859 --------------------------------------------------------------------------------------------------- Oil & Gas Storage & Transportation -- 1.4% 25,000 BBB/Baa3 Buckeye Partners LP, 6.05%, 1/15/18 $ 28,418 25,000 BBB/Baa2 DCP Midstream LLC, 9.75%, 3/15/19 (144A) 32,342 65,000 7.00 BB+/Baa3 Enterprise Products Operating LLC, Floating Rate Note, 6/1/67 65,162 50,000 NR/B2 Everest Acquisition LLC, 9.375%, 5/1/20 (144A) 53,250 70,000 BBB/Baa2 Kinder Morgan Energy Partners LP, 4.15%, 3/1/22 71,615 10,000 BBB/Baa2 Kinder Morgan Energy Partners LP, 5.95%, 2/15/18 11,641 25,000 BBB-/Baa2 Plains All American Pipeline LP, 6.125%, 1/15/17 29,162 10,000 A/A3 Questar Pipeline Co., 5.83%, 2/1/18 11,824 30,000 BB/Ba1 Rockies Express Pipeline LLC, 5.625%, 4/15/20 (144A) 27,000 10,000 BBB/Baa2 Spectra Energy Capital LLC, 6.75%, 7/15/18 11,705 60,000 BBB/Baa2 Sunoco Logistics Partners Operations LP, 6.1%, 2/15/42 64,235 13,000 BBB-/Baa3 The Williams Companies, Inc., 7.75%, 6/15/31 15,889 ----------- $ 422,243 --------------------------------------------------------------------------------------------------- Coal & Consumable Fuels -- 0.7% 45,000 BB/Ba3 Alpha Natural Resources, Inc., 6.0%, 6/1/19 $ 42,075 25,000 BB-/B1 Berau Coal Energy Tbk PT, 7.25%, 3/13/17 (144A) 24,938 150,000 BB+/Ba1 Peabody Energy Corp., 6.0%, 11/15/18 (144A) 152,250 ----------- $ 219,263 ----------- Total Energy $ 1,298,844 --------------------------------------------------------------------------------------------------- MATERIALS -- 1.2% Commodity Chemicals -- 0.3% 70,000 BB/Ba2 NOVA Chemicals Corp., 8.375%, 11/1/16 $ 77,700 --------------------------------------------------------------------------------------------------- Specialty Chemicals -- 0.1% 25,000 BBB/Baa2 Cytec Industries, Inc., 8.95%, 7/1/17 $ 31,232 --------------------------------------------------------------------------------------------------- Construction Materials -- 0.1% 30,000 BBB/Baa2 Holcim US Finance Sarl & Cie SCS, 6.0%, 12/30/19 (144A) $ 31,877 --------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 24 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value Aluminum -- 0.1% 25,000 BBB-/Baa3 Alcoa, Inc., 6.15%, 8/15/20 $ 27,256 --------------------------------------------------------------------------------------------------- Diversified Metals & Mining -- 0.1% 35,000 BBB-/Baa3 AngloGold Ashanti Holdings Plc, 5.375%, 4/15/20 $ 36,634 --------------------------------------------------------------------------------------------------- Steel -- 0.5% 30,000 BBB-/Baa3 ArcelorMittal, 6.125%, 6/1/18 $ 31,619 25,000 BB+/Ba2 Commercial Metals Co., 7.35%, 8/15/18 26,062 100,000 NR/B2 Metinvest BV, 10.25%, 5/20/15 (144A) 99,250 ----------- $ 156,931 ----------- Total Materials $ 361,630 --------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 1.4% Aerospace & Defense -- 0.1% 30,000 BB/Ba2 Esterline Technologies Corp., 6.625%, 3/1/17 $ 31,012 Building Products -- 0.4% 25,000 BBB-/Ba2 Masco Corp., 5.95%, 3/15/22 $ 25,436 85,000 BBB-/Ba2 Masco Corp., 7.125%, 3/15/20 91,942 ----------- $ 117,378 --------------------------------------------------------------------------------------------------- Electrical Components & Equipment -- 0.3% 75,000 B+/Ba2 Belden, Inc., 7.0%, 3/15/17 $ 77,062 25,000 B/B2 WireCo WorldGroup, Inc., 9.5%, 5/15/17 25,812 ----------- $ 102,874 --------------------------------------------------------------------------------------------------- Industrial Conglomerates -- 0.1% 10,000 A-/A3 Tyco International Finance SA, 8.5%, 1/15/19 $ 13,106 --------------------------------------------------------------------------------------------------- Construction & Farm Machinery & Heavy Trucks -- 0.1% 10,000 A/Baa1 Cummins, Inc., 6.75%, 2/15/27 $ 12,120 --------------------------------------------------------------------------------------------------- Industrial Machinery -- 0.1% 15,000 BBB+/Baa1 Ingersoll-Rand Global Holding Co., Ltd., 9.5%, 4/15/14 $ 17,240 20,000 BBB-/Baa3 Valmont Industries, Inc., 6.625%, 4/20/20 23,364 ----------- $ 40,604 --------------------------------------------------------------------------------------------------- Trading Companies & Distributors -- 0.3% 55,000 BBB-/NR Aviation Capital Group Corp., 6.75%, 4/6/21 (144A) $ 54,417 40,000 BBB/Baa2 GATX Corp., 6.0%, 2/15/18 44,834 ----------- $ 99,251 ----------- Total Capital Goods $ 416,345 --------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 25 Schedule of Investments | 4/30/12 (unaudited) (continued) ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------- TRANSPORTATION -- 0.9% Air Freight & Logistics -- 0.2% 75,000 B+/Ba3 CEVA Group Plc, 8.375%, 12/1/17 (144A) $ 74,625 ---------------------------------------------------------------------------------------------------- Airlines -- 0.6% 145,572 BBB-/Baa3 American Airlines 2011-2 Class A Pass Through Trust, 8.625%, 10/15/21 $ 153,578 14,298 A-/Baa2 Delta Air Lines 2010-2 Class A Pass Through Trust, 4.95%, 5/23/19 15,299 ----------- $ 168,877 ---------------------------------------------------------------------------------------------------- Railroads -- 0.1% 25,000 BBB+/A3 Burlington Northern Santa Fe LLC, 5.75%, 3/15/18 $ 29,918 ----------- Total Transportation $ 273,420 ---------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.9% Auto Parts & Equipment -- 0.5% 100,000 B+/B2 Pittsburgh Glass Works LLC, 8.5%, 4/15/16 (144A) $ 98,500 50,000 B+/B1 Tower Automotive Holdings USA LLC, 10.625%, 9/1/17 (144A) 53,688 ----------- $ 152,188 ---------------------------------------------------------------------------------------------------- Automobile Manufacturers -- 0.4% AUD 100,000 A/A2 BMW Australia Finance, Ltd., 6.5%, 2/28/14 $ 107,572 10,000 BBB+/Baa1 Nissan Motor Acceptance Corp., 4.5%, 1/30/15 (144A) 10,711 ----------- $ 118,283 ----------- Total Automobiles & Components $ 270,471 ---------------------------------------------------------------------------------------------------- CONSUMER DURABLES & APPAREL -- 0.2% Homebuilding -- 0.1% 50,000 NR/Ba3 Desarrolladora Homex SAB de CV, 9.5%, 12/11/19 (144A) $ 51,625 ---------------------------------------------------------------------------------------------------- Household Appliances -- 0.1% 25,000 BBB-/Baa3 Whirlpool Corp., 5.5%, 3/1/13 $ 25,845 ----------- Total Consumer Durables & Apparel $ 77,470 ---------------------------------------------------------------------------------------------------- CONSUMER SERVICES -- 0.8% Casinos & Gaming -- 0.1% 25,000 BBB/Baa2 International Game Technology, 7.5%, 6/15/19 $ 29,698 ---------------------------------------------------------------------------------------------------- Education Services -- 0.7% 25,000 AAA/Aaa Massachusetts Institute of Technology, 5.6%, 7/1/11 $ 33,044 The accompanying notes are an integral part of these financial statements. 26 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------- Education Services -- (continued) 30,000 AAA/Aaa Stanford University, 4.75%, 5/1/19 $ 35,424 75,000 AA-/NR Tufts University, 5.017%, 4/15/12 80,686 50,000 AAA/Aaa Yale University, 2.9%, 10/15/14 52,780 ----------- $ 201,934 ----------- Total Consumer Services $ 231,632 ---------------------------------------------------------------------------------------------------- MEDIA -- 0.3% Broadcasting -- 0.2% 50,000 B-/B3 Telesat Canada, 12.5%, 11/1/17 $ 56,000 ---------------------------------------------------------------------------------------------------- Cable & Satellite -- 0.1% 25,000 BBB+/Baa1 British Sky Broadcasting Group Plc, 6.1%, 2/15/18 (144A) $ 29,506 10,000 BBB/Baa2 Time Warner Cable, Inc., 8.25%, 4/1/19 13,025 5,000 BBB/Baa2 Time Warner Cable, Inc., 8.75%, 2/14/19 6,602 ----------- $ 49,133 ----------- Total Media $ 105,133 ---------------------------------------------------------------------------------------------------- RETAILING -- 0.2% Internet Retail -- 0.2% 50,000 BBB-/Ba1 Expedia, Inc., 5.95%, 8/15/20 $ 52,271 ----------- Total Retailing $ 52,271 ---------------------------------------------------------------------------------------------------- FOOD & STAPLES RETAILING -- 0.0% Drug Retail -- 0.0% 14,561 BBB+/Baa2 CVS Pass-Through Trust, 5.773%, 1/10/33 (144A) $ 15,993 ----------- Total Food & Staples Retailing $ 15,993 ---------------------------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 1.0% Brewers -- 0.1% 20,000 A-/A3 Anheuser-Busch InBev Worldwide, Inc., 7.75%, 1/15/19 $ 26,461 ---------------------------------------------------------------------------------------------------- Agricultural Products -- 0.2% 50,000 BBB-/Ba1 Viterra, Inc., 5.95%, 8/1/20 (144A) $ 55,252 ---------------------------------------------------------------------------------------------------- Packaged Foods & Meats -- 0.7% 45,000 BBB-/Baa2 Kraft Foods, Inc., 6.5%, 2/9/40 $ 56,590 150,000 B+/B1 Post Holdings, Inc., 7.375%, 2/15/22 (144A) 156,000 ----------- $ 212,590 ----------- Total Food, Beverage & Tobacco $ 294,303 ---------------------------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 0.8% Health Care Facilities -- 0.2% 10,000 BB/Ba3 HCA, Inc., 8.5%, 4/15/19 $ 11,219 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 27 Schedule of Investments | 4/30/12 (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- Health Care Facilities -- (continued) 50,000 B-/B3 Health Management Associates, Inc., 7.375%, 1/15/20 (144A) $ 52,062 ----------- $ 63,281 ------------------------------------------------------------------------------------------------------- Managed Health Care -- 0.3% 100,000 BB+/Ba3 Amerigroup Corp., 7.5%, 11/15/19 $ 109,000 ------------------------------------------------------------------------------------------------------- Health Care Technology -- 0.3% 75,000 B-/B3 MedAssets, Inc., 8.0%, 11/15/18 $ 78,375 ----------- Total Health Care Equipment & Services $ 250,656 ------------------------------------------------------------------------------------------------------- PHARMACEUTICALS, BIOTECHNOLOGY & LIFE SCIENCES -- 0.1% Biotechnology -- 0.1% 25,000 BBB+/Baa2 Biogen Idec, Inc., 6.0%, 3/1/13 $ 26,031 ----------- Total Pharmaceuticals, Biotechnology & Life Sciences $ 26,031 ------------------------------------------------------------------------------------------------------- BANKS -- 5.1% Diversified Banks -- 3.0% NOK 250,000 AAA/Aaa Asian Development Bank, 3.375%, 5/20/14 $ 44,873 EURO 50,000 NR/Aaa AXA Bank Europe SCF, 3.5%, 11/5/20 68,272 AUD 100,000 AA/Aaa Cooperatieve Centrale Raiffeisen- Boerenleenbank BA Australia, 6.0%, 10/29/15 107,694 TRY 40,000 AA/Aaa Cooperatieve Centrale Raiffeisen- Boerenleenbank BA Netherlands, 3/3/15 17,896 EURO 50,000 NR/Aaa Cooperatieve Centrale Raiffeisen- Boerenleenbank BA Netherlands, 6.875%, 3/19/20 63,734 AUD 50,000 AAA/Aaa Inter-American Development Bank, 6.5%, 8/20/19 58,412 NOK 1,500,000 AAA/Aaa International Bank for Reconstruction & Development, 3.25%, 4/14/14 268,206 AUD 185,000 AAA/Aaa International Bank for Reconstruction & Development, 5.75%, 10/21/19 207,514 100,000 BBB+/A2 Intesa Sanpaolo S.p.A., 6.5%, 2/24/21 (144A) 90,856 ----------- $ 927,457 ------------------------------------------------------------------------------------------------------- Regional Banks -- 1.5% 70,000 BB+/Baa3 Capital One Capital VI, 8.875%, 5/15/40 $ 71,574 25,000 A/A1 Mellon Funding Corp., 5.5%, 11/15/18 28,617 65,000 8.25 BBB/Baa3 PNC Financial Services Group, Inc., Floating Rate Note, 5/29/49 (Perpetual) 67,407 115,000 6.75 BBB/Baa3 PNC Financial Services Group, Inc., Floating Rate Note, 7/29/49 (Perpetual) 120,540 The accompanying notes are an integral part of these financial statements. 28 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------------ Regional Banks -- (continued) 150,000 5.46 BBB+/Baa1 State Street Capital Trust III, Floating Rate Note, 1/29/49 (Perpetual) $ 150,588 20,000 A+/A1 Wachovia Bank NA, 6.0%, 11/15/17 23,303 ----------- $ 462,029 ------------------------------------------------------------------------------------------------------------ Thrifts & Mortgage Finance -- 0.6% GBP 100,000 AAA/Aaa Cie de Financement Foncier SA, 4.625%, 12/28/12 $ 165,405 ----------- Total Banks $ 1,554,891 ------------------------------------------------------------------------------------------------------------ DIVERSIFIED FINANCIALS -- 3.6% Other Diversified Financial Services -- 0.6% 20,000 BBB+/Baa2 Alterra Finance LLC, 6.25%, 9/30/20 $ 21,464 TRY 65,000 AAA/Aaa European Investment Bank, 0.00%, 3/2/15 29,458 25,000 A/Aa3 JPMorgan Chase & Co., 6.0%, 1/15/18 28,886 100,000 7.90 BBB/Baa1 JPMorgan Chase & Co., Floating Rate Note, 4/29/49 (Perpetual) 109,564 ----------- $ 189,372 ------------------------------------------------------------------------------------------------------------ Specialized Finance -- 0.4% 91,000 BBB/Baa3 Cantor Fitzgerald LP, 7.875%, 10/15/19 (144A) $ 91,552 10,000 A+/A1 National Rural Utilities Cooperative Finance Corp., 5.45%, 2/1/18 11,797 ----------- $ 103,349 ------------------------------------------------------------------------------------------------------------ Consumer Finance -- 0.8% 35,000 A+/A1 American Honda Finance Corp., 6.7%, 10/1/13 (144A) $ 37,633 CNY 1,000,000 A/A2 Caterpillar Financial Services Corp., 1.35%, 7/12/13 155,813 25,000 A/A2 Caterpillar Financial Services Corp., 7.05%, 10/1/18 32,056 30,000 CCC/B3 Springleaf Finance Corp., 6.9%, 12/15/17 24,488 ----------- $ 249,990 ------------------------------------------------------------------------------------------------------------ Asset Management & Custody Banks -- 0.1% 25,000 A-/A3 Eaton Vance Corp., 6.5%, 10/2/17 $ 28,588 ------------------------------------------------------------------------------------------------------------ Investment Banking & Brokerage -- 1.7% 110,000 5.79 BB+/Baa2 Goldman Sachs Capital II, Floating Rate Note, 6/1/43 $ 75,625 35,000 BBB/Baa2 Jefferies Group, Inc., 5.125%, 4/13/18 34,169 50,000 BBB/Baa2 Jefferies Group, Inc., 6.875%, 4/15/21 49,812 25,000 BBB/Baa2 Jefferies Group, Inc., 8.5%, 7/15/19 27,625 10,000 BBB/A3 Macquarie Group, Ltd., 6.0%, 1/14/20 (144A) 9,979 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 29 Schedule of Investments | 4/30/12 (unaudited) (continued) ------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------ Investment Banking & Brokerage -- (continued) 50,000 A-/Baa1 Merrill Lynch & Co., Inc., 5.45%, 2/5/13 $ 51,368 100,000 BBB+/Baa2 Merrill Lynch & Co., Inc., 7.75%, 5/14/38 110,742 10,000 A-/A2 Morgan Stanley, 5.5%, 1/26/20 9,775 45,000 A-/A2 Morgan Stanley, 6.625%, 4/1/18 47,036 25,000 BBB/Baa2 Raymond James Financial, Inc., 4.25%, 4/15/16 26,031 90,000 NR/Baa3 Scottrade Financial Services, Inc., 6.125%, 7/11/21 (144A) 90,115 ----------- $ 532,277 ----------- Total Diversified Financials $ 1,103,576 ------------------------------------------------------------------------------------------------------ INSURANCE -- 1.9% Life & Health Insurance -- 0.7% 35,000 BBB/Baa3 Delphi Financial Group, Inc., 7.875%, 1/31/20 $ 41,427 15,000 A-/Baa2 Lincoln National Corp., 8.75%, 7/1/19 19,187 25,000 6.05 BBB/Ba1 Lincoln National Corp., Floating Rate Note, 4/20/67 23,250 35,000 BBB/Baa2 MetLife, Inc., 10.75%, 8/1/39 48,650 45,000 A-/Baa2 Protective Life Corp., 7.375%, 10/15/19 51,084 25,000 A/Baa2 Prudential Financial, Inc., 5.15%, 1/15/13 25,760 ----------- $ 209,358 ------------------------------------------------------------------------------------------------------ Multi-line Insurance -- 0.3% 40,000 BBB/Baa3 Genworth Financial, Inc., 7.2%, 2/15/21 $ 38,420 45,000 7.00 BB/Baa3 Liberty Mutual Group, Inc., Floating Rate Note, 3/15/37 (144A) 40,500 ----------- $ 78,920 ------------------------------------------------------------------------------------------------------ Property & Casualty Insurance -- 0.7% 95,000 7.51 BB+/Ba2 Sirius International Group, Ltd., Floating Rate Note, 5/29/49 (Perpetual) (144A) $ 90,688 70,000 6.50 BBB/Baa1 The Allstate Corp., Floating Rate Note, 5/15/57 68,425 50,000 BBB-/Baa3 The Hanover Insurance Group, Inc., 7.5%, 3/1/20 57,434 ----------- $ 216,547 ------------------------------------------------------------------------------------------------------ Reinsurance -- 0.2% 40,000 BBB/NR Platinum Underwriters Finance, Inc., 7.5%, 6/1/17 $ 43,059 35,000 6.75 BBB-/Baa3 Reinsurance Group of America, Inc., Floating Rate Note, 12/15/65 32,386 ----------- $ 75,445 ----------- Total Insurance $ 580,270 ------------------------------------------------------------------------------------------------------ The accompanying notes are an integral part of these financial statements. 30 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- REAL ESTATE -- 1.0% Diversified REIT's -- 0.2% 40,000 BBB+/Baa1 Dexus Property Group, 7.125%, 10/15/14 (144A) $ 43,511 20,000 BBB/Baa2 Digital Realty Trust LP, 4.5%, 7/15/15 21,015 10,000 BBB/Baa2 Digital Realty Trust LP, 5.875%, 2/1/20 11,017 ----------- $ 75,543 ------------------------------------------------------------------------------------------------------- Office REIT's -- 0.2% 20,000 BBB-/Baa2 Alexandria Real Estate Equities, Inc., 4.6%, 4/1/22 $ 20,084 25,000 BBB/Baa2 Mack-Cali Realty LP, 5.125%, 2/15/14 26,131 ----------- $ 46,215 ------------------------------------------------------------------------------------------------------- Retail REIT's -- 0.1% 35,000 BB+/Baa3 DDR Corp., 7.5%, 4/1/17 $ 40,141 ------------------------------------------------------------------------------------------------------- Specialized REIT's -- 0.4% 10,000 BBB-/Baa2 Health Care Real Estate Investment Trust, Inc., 6.2%, 6/1/16 $ 11,093 25,000 BBB-/Baa3 Healthcare Realty Trust, Inc., 6.5%, 1/17/17 27,586 25,000 BBB-/Baa2 Hospitality Properties Trust, 7.875%, 8/15/14 27,359 45,000 BBB-/Baa3 Senior Housing Properties Trust, 6.75%, 4/15/20 48,267 ----------- $ 114,305 ------------------------------------------------------------------------------------------------------- Diversified Real Estate Activities -- 0.1% 35,000 A-/A2 WEA Finance LLC, 7.125%, 4/15/18 (144A) $ 41,593 ----------- Total Real Estate $ 317,797 ------------------------------------------------------------------------------------------------------- TECHNOLOGY HARDWARE & EQUIPMENT -- 0.5% Communications Equipment -- 0.5% 150,000 B/B3 CommScope, Inc., 8.25%, 1/15/19 (144A) $ 160,125 ----------- Total Technology Hardware & Equipment $ 160,125 ------------------------------------------------------------------------------------------------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 0.1% Semiconductor Equipment -- 0.1% 25,000 BBB/Baa1 KLA-Tencor Corp., 6.9%, 5/1/18 $ 30,250 ----------- Total Semiconductors & Semiconductor Equipment $ 30,250 ------------------------------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES -- 2.6% Integrated Telecommunication Services -- 1.6% CHF 40,000 BBB+/Baa1 Deutsche Telekom AG, 3.75%, 4/22/14 $ 46,749 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 31 Schedule of Investments | 4/30/12 (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- Integrated Telecommunication Services -- (continued) 30,000 BB/Ba2 Frontier Communications Corp., 8.5%, 4/15/20 $ 31,200 45,000 NR/A2 GTP Acquisition Partners I LLC, 4.347%, 6/15/16 (144A) 46,483 45,000 NR/A2 GTP Towers Issuer LLC, 4.436%, 2/15/15 (144A) 46,211 20,000 A/A2 Qtel International Finance, Ltd., 6.5%, 6/10/14 (144A) 21,800 EURO 50,000 BBB+/Baa1 Telefonica Emisiones SAU, 5.496%, 4/1/16 69,296 75,000 BBB+/Baa1 Telefonica Emisiones SAU, 6.221%, 7/3/17 76,516 150,000 B+/Ba3 UPCB Finance V, Ltd., 7.25%, 11/15/21 (144A) 157,875 ----------- $ 496,130 ------------------------------------------------------------------------------------------------------- Wireless Telecommunication Services -- 1.0% CNY 1,000,000 A-/A2 America Movil SAB de CV, 3.5%, 2/8/15 $ 160,119 35,000 B+/Ba2 Cricket Communications, Inc., 7.75%, 5/15/16 36,838 30,000 NR/A2 Crown Castle Towers LLC, 4.883%, 8/15/20 (144A) 31,821 75,000 B/B2 MetroPCS Wireless, Inc., 6.625%, 11/15/20 72,188 ----------- $ 300,966 ----------- Total Telecommunication Services $ 797,096 ------------------------------------------------------------------------------------------------------- UTILITIES -- 0.9% Electric Utilities -- 0.7% 10,000 A-/A3 Commonwealth Edison Co., 6.15%, 9/15/17 $ 12,152 25,000 BBB/Baa2 Commonwealth Edison Co., 6.95%, 7/15/18 30,294 10,000 6.70 BB+/Ba1 PPL Capital Funding, Inc., Floating Rate Note, 3/30/67 9,900 70,000 BBB-/Baa3 Public Service Co., of New Mexico, 7.95%, 5/15/18 85,695 50,000 6.25 BBB-/Baa2 Southern California Edison Co., Floating Rate Note, 8/1/49 (Perpetual) 52,181 10,000 BBB+/A3 West Penn Power Co., 5.95%, 12/15/17 (144A) 11,734 ----------- $ 201,956 ------------------------------------------------------------------------------------------------------- Multi-Utilities -- 0.1% 25,000 BBB+/Baa2 New York State Electric & Gas Corp., 6.15%, 12/15/17 (144A) $ 28,335 ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 32 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value --------------------------------------------------------------------------------------------------- Independent Power Producers & Energy Traders -- 0.1% 37,703 BBB-/Baa3 Panoche Energy Center LLC, 6.885%, 7/31/29 (144A) $ 41,539 ----------- Total Utilities $ 271,830 --------------------------------------------------------------------------------------------------- GOVERNMENT -- 0.3% Government -- 0.3% GBP 50,000 AAA/NR European Bank for Reconstruction & Development, 1.875%, 12/10/13 $ 82,434 ----------- Total Government $ 82,434 --------------------------------------------------------------------------------------------------- TOTAL CORPORATE BONDS (Cost $8,036,865) $ 8,572,468 --------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATIONS -- 10.5% 122,637 AAA/Aaa Fannie Mae, 4.0%, 11/1/41 $ 129,902 173,686 AAA/Aaa Fannie Mae, 4.0%, 12/1/41 183,975 149,048 AAA/Aaa Fannie Mae, 4.5%, 12/1/41 160,026 69,874 AAA/Aaa Fannie Mae, 4.5%, 4/1/41 75,021 67,495 AAA/Aaa Fannie Mae, 5.0%, 6/1/40 73,658 871,371 AAA/Aaa Fannie Mae, 5.0%, 7/1/40 950,942 474,458 AAA/Aaa Federal Home Loan Mortgage Corp., 5.0%, 9/1/38-10/1/38 513,036 111,346 AAA/Aaa Federal Home Loan Mortgage Corp., 6.0%, 8/1/37 124,833 254,962 AAA/Aaa Federal Home Loan Mortgage Corp., 6.5%, 1/1/38-4/1/38 287,337 142,995 AAA/Aaa Government National Mortgage Association I, 4.5%, 8/15/41 156,771 147,250 AAA/Aaa Government National Mortgage Association II, 4.5%, 9/20/41 161,758 30,000 AA+/Aaa U.S. Treasury Bonds, 4.25%, 5/15/39 36,877 60,000 AA+/Aaa U.S. Treasury Bonds, 4.5%, 2/15/36 76,238 10,000 AA+/Aaa U.S. Treasury Bonds, 4.5%, 5/15/38 12,759 60,000 AA+/Aaa U.S. Treasury Bonds, 4.5%, 8/15/39 76,659 100,000 AA+/Aaa U.S. Treasury Bonds, 4.75%, 2/15/41 132,891 50,000 AA+/Aaa U.S. Treasury Bonds, 5.375%, 2/15/31 69,828 ----------- $ 3,222,511 --------------------------------------------------------------------------------------------------- TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATIONS (Cost $3,076,117) $ 3,222,511 --------------------------------------------------------------------------------------------------- FOREIGN GOVERNMENT BONDS -- 30.6% AUD 100,000 NR/Aaa Australia Government Bond, 5.75%, 5/15/21 $ 121,492 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 33 Schedule of Investments | 4/30/12 (unaudited) (continued) ------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------ Foreign Government Bonds -- (continued) AUD 200,000 NR/Aaa Australia Government Bond, 6.5%, 5/15/13 $ 215,321 EURO 50,000 AA+/Aaa Austria Government Bond, 4.15%, 3/15/37 (144A) 74,435 EURO 110,000 AA+/Aaa Austria Government Bond, 4.3%, 7/15/14 156,741 EURO 50,000 AA+/Aaa Austria Government Bond, 4.35%, 3/15/19 (144A) 75,233 EURO 25,000 NR/Aa3 Belgium Government Bond, 5.5%, 3/28/28 40,097 EURO 50,000 NR/Aaa Bundesrepublik Deutschland, 2.0%, 1/4/22 68,698 EURO 100,000 NR/Aaa Bundesrepublik Deutschland, 3.25%, 1/4/20 152,082 EURO 125,000 NR/Aaa Bundesrepublik Deutschland, 6.5%, 7/4/27 255,382 CAD 10,000 AAA/Aaa Canada Housing Trust No 1, 3.35%, 12/15/20 (144A) 10,807 CAD 225,000 AAA/Aaa Canada Housing Trust No 1, 3.55%, 9/15/13 (144A) 234,491 CAD 100,000 AAA/Aaa Canada Housing Trust No 1, 3.8%, 6/15/21 (144A) 111,626 CAD 60,000 AAA/Aaa Canadian Government Bond, 1.5%, 3/1/17 60,434 CAD 250,000 AAA/Aaa Canadian Government Bond, 2.0%, 6/1/16 257,444 CZK 500,000 AA/A1 Czech Republic Government Bond, 3.7%, 6/16/13 27,250 DKK 170,000 AAA/Aaa Denmark Government Bond, 4.0%, 11/15/15 33,999 DKK 250,000 AAA/Aaa Denmark Government Bond, 4.5%, 11/15/39 63,907 100,000 B+/B1 Dominican Republic International Bond, 7.5%, 5/6/21 (144A) 105,350 EURO 150,000 NR/Aaa France Government Bond OAT, 3.0%, 10/25/15 210,619 EURO 200,000 NR/Aaa France Government Bond OAT, 3.25%, 10/25/21 272,624 EURO 117,000 NR/Aaa France Government Bond OAT, 3.75%, 4/25/21 166,126 EURO 25,000 NR/Aaa France Government Bond OAT, 4.0%, 10/25/38 34,670 HUF 5,000,000 BB+/Ba1 Hungary Government Bond, 6.75%, 2/12/13 22,926 IDR 200,000,000 BB+/NR Indonesia Recapitalization Bond, 14.25%, 6/15/13 24,122 The accompanying notes are an integral part of these financial statements. 34 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- Foreign Government Bonds -- (continued) IDR 100,000,000 BB+/NR Indonesia Recapitalization Bond, 14.275%, 12/15/13 $ 12,541 IDR 400,000,000 BB+/Baa3 Indonesia Treasury Bond, 11.0%, 12/15/12 45,409 IDR 50,000,000 BB+/Baa3 Indonesia Treasury Bond, 12.5%, 3/15/13 5,829 IDR 5,000,000,000 NR/Baa3 Indonesia Treasury Bond, 7.375%, 9/15/16 590,539 IDR 1,010,000,000 NR/NR Indonesia Treasury Bond, 8.25%, 6/15/32 127,295 IDR 25,000,000 NR/Baa3 Indonesia Treasury Bond, 9.0%, 9/15/13 2,888 EURO 90,000 BBB+/Ba1 Ireland Government Bond, 4.5%, 4/18/20 102,679 EURO 45,000 BBB+/Ba1 Ireland Government Bond, 5.0%, 10/18/20 52,576 EURO 85,000 BBB+/Ba1 Ireland Government Bond, 5.9%, 10/18/19 106,761 EURO 75,000 NR/A3 Italy Buoni Poliennali Del Tesoro, 2.25%, 11/1/13 98,402 EURO 50,000 NR/A3 Italy Buoni Poliennali Del Tesoro, 3.75%, 8/1/16 65,223 EURO 110,000 NR/A3 Italy Buoni Poliennali Del Tesoro, 4.75%, 2/1/13 148,251 EURO 25,000 NR/A3 Italy Buoni Poliennali Del Tesoro, 6.5%, 11/1/27 34,557 JPY 30,000,000 NR/Aa3 Japan Government Ten Year Bond, 1.7%, 9/20/16 399,945 JPY 5,000,000 NR/Aa3 Japan Government Thirty Year Bond, 2.3%, 12/20/36 68,546 JPY 27,000,000 NR/Aa3 Japan Government Twenty Year Bond, 1.5%, 3/20/19 361,247 JPY 35,000,000 NR/Aa3 Japan Government Two Year Bond, 0.2%, 8/15/13 439,000 MXN 1,690,000 A-/NR Mexican Bonos, 7.75%, 11/13/42 134,464 MXN 250,000 A-/Baa1 Mexican Bonos, 9.5%, 12/18/14 22,089 EURO 150,000 NR/Aaa Netherlands Government Bond, 4.0%, 7/15/16 222,731 EURO 100,000 NR/Aaa Netherlands Government Bond, 4.25%, 7/15/13 138,872 EURO 91,000 NR/Aaa Netherlands Government Bond, 5.5%, 1/15/28 163,835 NOK 150,000 AAA/Aaa Norway Government Bond, 4.25%, 5/19/17 29,495 NOK 275,000 AAA/Aaa Norway Government Bond, 5.0%, 5/15/15 52,923 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 35 Schedule of Investments | 4/30/12 (unaudited) (continued) ----------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ----------------------------------------------------------------------------------------------------- Foreign Government Bonds -- (continued) PHP 6,480,000 NR/NR Philippine Government Bond, 5.875%, 3/1/32 $ 153,436 PHP 2,440,000 NR/Ba2 Philippine Government Bond, 7.625%, 9/29/36 68,082 PLN 250,000 A/A2 Poland Government Bond, 5.0%, 4/25/16 79,705 PLN 1,400,000 A/A2 Poland Government Bond, 5.25%, 10/25/17 450,165 NZD 250,000 AA-/Aa2 Province of Ontario Canada, 6.25%, 6/16/15 219,573 AUD 120,000 AA+/Aa1 Queensland Treasury Corp., 6.0%, 7/21/22 134,587 200,000 BBB/Baa1 Russian Foreign Bond -- Eurobond, 4.5%, 4/4/22 (144A) 207,300 SGD 150,000 NR/Aaa Singapore Government Bond, 1.625%, 4/1/13 122,773 ZAR 1,500,000 NR/A3 South Africa Government Bond, 6.75%, 3/31/21 181,593 ZAR 250,000 A/A3 South Africa Government Bond, 7.5%, 1/15/14 33,109 ZAR 300,000 A/A3 South Africa Government Bond, 8.0%, 12/21/18 39,959 EURO 100,000 BBB+/A3 Spain Government Bond, 4.1%, 7/30/18 125,416 EURO 129,000 BBB+/A3 Spain Government Bond, 4.4%, 1/31/15 174,260 SEK 500,000 AAA/Aaa Sweden Government Bond, 3.5%, 3/30/39 93,954 SEK 55,000 AAA/Aaa Sweden Government Bond, 3.75%, 8/12/17 9,139 SEK 1,000,000 AAA/Aaa Sweden Government Bond, 4.25%, 3/12/19 174,249 SEK 2,450,000 AAA/Aaa Sweden Government Bond, 5.5%, 10/8/12 370,740 SEK 55,000 AAA/Aaa Sweden Government Bond, 6.75%, 5/5/14 9,082 GBP 50,000 NR/Aaa United Kingdom Gilt, 4.0%, 9/7/16 91,775 GBP 60,000 NR/Aaa United Kingdom Gilt, 4.25%, 12/7/27 115,767 GBP 70,000 NR/Aaa United Kingdom Gilt, 4.25%, 9/7/39 132,696 GBP 75,000 NR/Aaa United Kingdom Gilt, 8.75%, 8/25/17 169,998 ----------- $ 9,379,331 ----------- TOTAL FOREIGN GOVERNMENT BONDS (Cost $9,164,233) $ 9,379,331 ----------------------------------------------------------------------------------------------------- MUNICIPAL BONDS -- 2.6% Municipal Airport -- 0.1% 20,000 BBB/Baa1 Indianapolis Airport Authority, 5.1%, 1/15/17 $ 22,722 ----------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 36 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------ Municipal Development -- 0.2% 50,000 AA-/Aa3 California Statewide Communities Development Authority, 6.0%, 8/15/42 $ 58,612 ------------------------------------------------------------------------------------------------------ Higher Municipal Education -- 1.6% 50,000 AA-/Aa2 California State University, 5.0%, 11/1/39 $ 53,304 50,000 AAA/Aaa Connecticut State Health & Educational Facility Authority, 5.0%, 7/1/40 55,206 25,000 AAA/Aaa Connecticut State Health & Educational Facility Authority, 5.0%, 7/1/42 27,760 50,000 AAA/Aaa Houston Higher Education Finance Corp., 4.5%, 11/15/37 52,216 70,000 AAA/Aaa Massachusetts Health & Educational Facilities Authority, 5.5%, 11/15/36 84,144 25,000 AAA/Aaa Massachusetts Health & Educational Facilities Authority, 5.5%, 7/1/32 34,966 10,000 AAA/Aaa Massachusetts Health & Educational Facilities Authority, 5.5%, 7/1/36 11,913 20,000 AAA/Aaa Massachusetts Health & Educational Facilities Authority, 6.0%, 7/1/36 24,504 30,000 AAA/Aaa Missouri State Health & Educational Facilities Authority, 5.0%, 11/15/39 33,571 50,000 AAA/Aaa New York State Dormitory Authority, 5.0%, 7/1/38 55,632 50,000 AA/Aa1 New York State Dormitory Authority, 5.0%, 7/1/40 55,700 20,000 AAA/Aaa Permanent University Fund, 5.0%, 7/1/30 24,373 ----------- $ 513,289 ------------------------------------------------------------------------------------------------------ Municipal Medical -- 0.1% 25,000 AA-/A1 Massachusetts Development Finance Agency, 5.25%, 4/1/37 $ 27,462 ------------------------------------------------------------------------------------------------------ Municipal Transportation -- 0.2% 50,000 AA/Aa2 Harris County Metropolitan Transit Authority, 5.0%, 11/1/41 $ 55,168 ------------------------------------------------------------------------------------------------------ Municipal Water -- 0.2% 45,000 AAA/Aa1 City of Charleston South Carolina, 5.0%, 1/1/41 $ 50,725 20,000 AAA/Aa2 Hampton Roads Sanitation District, 5.0%, 4/1/38 21,669 ----------- $ 72,394 ------------------------------------------------------------------------------------------------------ Municipal Obligation -- 0.2% 50,000 AA+/Aa1 State of Washington, 5.0%, 8/1/39 $ 55,590 ------------------------------------------------------------------------------------------------------ TOTAL MUNICIPAL BONDS (Cost $731,545) $ 805,237 ------------------------------------------------------------------------------------------------------ The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 37 Schedule of Investments | 4/30/12 (unaudited) (continued) -------------------------------------------------------------------------------------------------- Principal Amount ($) Value -------------------------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENTS -- 0.9% Repurchase Agreement -- 0.9% 290,000 JPMorgan, Inc., 0.20%, dated 4/30/12, repurchase price of $290,000 plus accrued interest on 4/2/12 collateralized by $295,800 Federal National Mortgage Association (ARM), 2.191 - 5.904%, 11/1/35 - 8/1/45 $ 290,000 -------------------------------------------------------------------------------------------------- TOTAL TEMPORARY CASH INVESTMENTS (Cost $290,000) $ 290,000 -------------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 94.1% (Cost $27,833,328) (a) $28,865,937 -------------------------------------------------------------------------------------------------- OTHER ASSETS & LIABILITIES -- 5.9% $ 1,797,959 -------------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $30,663,896 ================================================================================================== NR Not rated by either S&P or Moody's. (Step) Bond issued with an initial coupon rate which converts to a higher rate at a later date. REIT's Real Estate Investment Trust. (Perpetual) Security with no stated maturity date. (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, 2012, the value of these securities amounted to $4,671,355 or 15.2% of total net assets. (a) At April 30, 2012, the net unrealized gain on investments based on cost for federal income tax purposes of $27,833,452 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $1,650,815 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (618,330) ---------- Net unrealized gain $1,032,485 ========== (b) Debt obligation with a variable interest rate. Rate shown is rate at end of period. Principal amounts are denominated in U.S. Dollars unless otherwise noted: AUD Austrialian Dollar CAD Canadian Dollar CHF Swiss Franc CNY New Chinese Yuan CZK Czech Krona DKK Danish Kroner EURO Euro GBP British Pound Sterling HUF Hungarian Forint The accompanying notes are an integral part of these financial statements. 38 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 IDR Indonesian Rupiah JPY Japanese Yen MXN Mexican Peso NOK Norwegian Krone NZD New Zealand Dollar PHP Philippine Peso PLN New Polish Zloty SEK Swedish Krone SGD Singapore Dollar TRY Turkish Lira ZAR South African Rand Purchases and sales of securities (excluding temporary cash investments) for the six months ended April 30, 2012 aggregated $6,778,474 and $4,216,964, respectively. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Level 1 -- quoted prices in active markets for identical securities Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) Generally, equity securities are categorized as Level 1, fixed income securities and senior loans are categorized as Level 2 and securities valued using fair value methods (other than prices supplied by independent pricing services) are categorized as level 3. See Notes to Financial Statements -- Note 1A. The following is a summary of the inputs used as of April 30, 2012, in valuing the Fund's assets: ------------------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ------------------------------------------------------------------------------------------------- Convertible Corporate Bonds $ -- $ 407,750 $-- $ 407,750 Preferred Stocks 297,452 -- 297,452 Convertible Preferred Stocks 156,804 -- -- 156,804 Asset Backed Securities -- 1,016,842 -- 1,016,842 Collateralized Mortgage Obligations -- 4,717,542 -- 4,717,542 Corporate Bonds -- 8,572,468 -- 8,572,468 U.S. Government Agency Obligations -- 3,222,511 -- 3,222,511 Foreign Government Bonds -- 9,379,331 -- 9,379,331 Municipal Bonds -- 805,237 -- 805,237 Repurchase Agreement -- 290,000 -- 290,000 ------------------------------------------------------------------------------------------------- Total $454,256 $28,411,681 $-- $28,865,937 ================================================================================================= Other Financial Instruments* $ -- $ 1,564 $-- $ 1,564 ================================================================================================= * Other financial instruments include the unrealized gain on foreign exchange contracts. The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 39 Statement of Assets and Liabilities | 4/30/12 (unaudited) ASSETS: Investment in securities, at value (cost $27,833,328) $28,865,937 Cash 146,411 Foreign currencies, at value (cost $1,411,907) 1,445,465 Receivables -- Investment securities sold 99,795 Fund shares sold 39,895 Interest 324,474 Forward foreign currency settlement contracts, net 1,564 Due from Pioneer Investment Management, Inc. 36,842 Other 26,150 ------------------------------------------------------------------------------------- Total assets $30,986,533 ------------------------------------------------------------------------------------- LIABILITIES: Payables -- Investment securities purchased $ 170,803 Fund shares repurchased 11,833 Dividends 56,818 Due to affiliates 23,097 Accrued expenses 60,086 ------------------------------------------------------------------------------------- Total liabilities $ 322,637 ------------------------------------------------------------------------------------- NET ASSETS: Paid-in capital $29,381,947 Undistributed net investment income 1,958 Accumulated net realized gain on investments and foreign currency transactions 212,466 Net unrealized gain on investments 1,032,609 Net unrealized gain on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 34,916 ------------------------------------------------------------------------------------- Total net assets $30,663,896 ===================================================================================== NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $12,754,793/1,132,527 shares) $ 11.26 Class C (based on $3,673,559/325,531 shares) $ 11.28 Class Y (based on $14,235,544/1,254,164 shares) $ 11.35 MAXIMUM OFFERING PRICE: Class A ($11.26 [divided by] 95.5%) $ 11.79 ===================================================================================== The accompanying notes are an integral part of these financial statements. 40 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 Statement of Operations (unaudited) For the Six Months Ended 4/30/12 INVESTMENT INCOME: Dividends $ 6,857 Interest (net of foreign taxes withheld of $2,058) 627,868 ------------------------------------------------------------------------------------------------- Total investment income $634,725 ------------------------------------------------------------------------------------------------- EXPENSES: Management fees $ 74,197 Transfer agent fees and expenses Class A 9,564 Class C 2,581 Class Y 262 Distribution fees Class A 16,335 Class C 17,894 Shareholder communications expense 4,285 Administrative reimbursements 4,263 Custodian fees 6,970 Registration fees 21,021 Professional fees 29,105 Printing expense 33,312 Fees and expenses of nonaffiliated trustees 3,560 Miscellaneous 3,165 ------------------------------------------------------------------------------------------------- Total expenses $226,514 Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (71,180) ------------------------------------------------------------------------------------------------- Net expenses $155,334 ------------------------------------------------------------------------------------------------- Net investment income $479,391 ------------------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN ON INVESTMENTS, AND FOREIGN CURRENCY TRANSACTIONS: Net realized gain on: Investments $195,379 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 17,362 $212,741 ------------------------------------------------------------------------------------------------- Change in net unrealized gain on: Investments $ 18,139 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (14,969) $ 3,170 ------------------------------------------------------------------------------------------------- Net gain on investments and foreign currency transactions $215,911 ------------------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $695,302 ================================================================================================= The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 41 Statements of Changes in Net Assets --------------------------------------------------------------------------------------------------- Six Months Ended 4/30/12 Year Ended (unaudited) 10/31/11 --------------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income $ 479,391 $ 531,809 Net realized gain on investments, futures contracts and foreign currency transactions 212,741 20,479 Change in net unrealized gain (loss) on investments and foreign currency transactions 3,170 54,872 --------------------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $ 695,302 $ 607,160 --------------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.18 and $0.32 per share, respectively) $ (208,594) $ (273,085) Class C ($0.12 and $0.22 per share, respectively) (39,762) (67,255) Class Y ($0.18 and $0.32 per share, respectively) (209,076) (152,769) Net realized gain: Class A ($0.02 and $0.00 per share, respectively) (27,154) -- Class C ($0.02 and $0.00 per share, respectively) (7,524) -- Class Y ($0.02 and $0.00 per share, respectively) (23,477) -- --------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (515,587) $ (493,109) --------------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 5,504,512 $22,128,644 Reinvestment of distributions 201,808 230,156 Cost of shares repurchased (4,767,379) (6,631,172) --------------------------------------------------------------------------------------------------- Net increase in net assets resulting from Fund share transactions $ 938,941 $15,727,628 --------------------------------------------------------------------------------------------------- Net increase in net assets $ 1,118,656 $15,841,679 NET ASSETS: Beginning of period 29,545,240 13,703,561 --------------------------------------------------------------------------------------------------- End of period $30,663,896 $29,545,240 =================================================================================================== Undistributed (distributions in excess of) net investment income $ 1,958 $ (20,001) =================================================================================================== The accompanying notes are an integral part of these financial statements. 42 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------ '12 Shares '12 Amount '11 Shares '11 Amount (unaudited) (unaudited) ------------------------------------------------------------------------------------------------ Class A Shares sold 175,411 $ 1,925,364 1,010,747 $11,248,729 Reinvestment of distributions 15,975 177,858 17,937 199,884 Less shares repurchased (379,992) (4,233,658) (264,524) (2,920,267) ------------------------------------------------------------------------------------------------ Net increase (decrease) (188,606) $(2,130,436) 764,160 $8,528,346 ================================================================================================ Class C Shares sold 40,044 $ 441,878 80,347 $ 891,114 Reinvestment of distributions 2,141 23,887 2,718 30,177 Less shares repurchased (33,194) (369,205) (58,160) (641,829) ------------------------------------------------------------------------------------------------ Net increase 8,991 $ 96,560 24,905 $ 279,462 ================================================================================================ Class Y Shares sold 281,219 $ 3,137,270 886,941 $9,988,801 Reinvestment of distributions 6 63 8 95 Less shares repurchased (14,766) (164,516) (273,937) (3,069,076) ------------------------------------------------------------------------------------------------ Net increase 266,459 $ 2,972,817 613,012 $6,919,820 ================================================================================================ The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 43 Financial Highlights ------------------------------------------------------------------------------------------------------- Six Months Ended 4/30/12 Year Ended (unaudited) 10/31/11 ------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 11.22 $ 11.19 ------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.18 $ 0.34 Net realized and unrealized gain (loss) on investments 0.06 0.01 ------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets from investment operations $ 0.24 $ 0.35 Distributions to shareowners: Net investment income (0.18) (0.32) Net realized gain (0.02) -- Tax return of capital -- -- ------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 0.04 $ 0.03 ------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 11.26 $ 11.22 ======================================================================================================= Total return* 2.18% 3.22% Ratio of net expenses to average net assets 1.00%** 1.00% Ratio of net investment income to average net assets 3.30%** 2.94% Portfolio turnover rate 29%** 34% Net assets, end of period (in thousands) $12,755 $14,830 Ratios with no waiver of fees and assumption of expenses by the Adviser: Net expenses 1.63%** 2.07% Net investment income 2.70%** 1.86% ======================================================================================================= Financial Highlights ---------------------------------------------------------------------------------------------------------------------------- 12/28/07 (a) (Commencement Year Ended Year Ended of Operations) 10/31/10 10/31/09 to 10/31/08 ---------------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $10.84 $ 9.25 $10.00 ---------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.35 $ 0.39 $ 0.25 Net realized and unrealized gain (loss) on investments 0.41 1.57 (0.75) ---------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets from investment operations $ 0.76 $ 1.96 $(0.50) Distributions to shareowners: Net investment income (0.40) (0.37) (0.18) Net realized gain (0.01) -- (0.02) Tax return of capital -- -- (0.05) ---------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 0.35 $ 1.59 $(0.75) ---------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $11.19 $ 10.84 $ 9.25 ============================================================================================================================ Total return* 7.21% 21.58% (5.18)%*** Ratio of net expenses to average net assets 1.00% 1.00% 1.00%** Ratio of net investment income to average net assets 3.26% 3.83% 3.23%** Portfolio turnover rate 27% 28% 46%*** Net assets, end of period (in thousands) $6,235 $ 5,434 $3,628 Ratios with no waiver of fees and assumption of expenses by the Adviser: Net expenses 2.35% 2.90% 3.16%** Net investment income 1.91% 1.93% 1.07%** ============================================================================================================================ (a) Class A shares were first publicly offered on December 28, 2007. * Assumes initial investment at net asset value at the beginning of the period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of the period and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. *** Not annualized. The accompanying notes are an integral part of these financial statements. 44 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------ Six Months Ended 4/30/12 Year Ended (unaudited) 10/31/11 ------------------------------------------------------------------------------------------------------ Class C Net asset value, beginning of period $11.23 $11.19 ------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income $ 0.13 $ 0.24 Net realized and unrealized gain (loss) on investments 0.06 0.02 ------------------------------------------------------------------------------------------------------ Net increase (decrease) in net assets from investment operations $ 0.19 $ 0.26 Distributions to shareowners: Net investment income (0.12) (0.22) Net realized gain (0.02) -- Tax return of capital -- -- ------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 0.05 $ 0.04 ------------------------------------------------------------------------------------------------------ Net asset value, end of period $11.28 $11.23 ====================================================================================================== Total return* 1.77% 2.39% Ratio of net expenses to average net assets 1.90%** 1.90% Ratio of net investment income to average net assets 2.45%** 2.15% Portfolio turnover rate 29%** 34% Net assets, end of period (in thousands) $3,674 $3,555 Ratios with no waiver of fees and assumption of expenses by the Adviser: Net expenses 2.37%** 2.94% Net investment income 1.96%** 1.11% ====================================================================================================== --------------------------------------------------------------------------------------------------------------------------- 12/28/07 (a) (Commencement Year Ended Year Ended of Operations) 10/31/10 10/31/09 to 10/31/08 --------------------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $10.82 $ 9.23 $10.00 --------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.25 $ 0.29 $ 0.18 Net realized and unrealized gain (loss) on investments 0.43 1.58 (0.76) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets from investment operations $ 0.68 $ 1.87 $(0.58) Distributions to shareowners: Net investment income (0.30) (0.28) (0.12) Net realized gain (0.01) -- (0.02) Tax return of capital -- -- (0.05) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 0.37 $ 1.59 $(0.77) --------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $11.19 $10.82 $ 9.23 =========================================================================================================================== Total return* 6.45% 20.55% (5.95)%*** Ratio of net expenses to average net assets 1.90% 1.89% 1.90%** Ratio of net investment income to average net assets 2.37% 2.94% 2.29%** Portfolio turnover rate 27% 28% 46%*** Net assets, end of period (in thousands) $3,264 $3,281 $2,471 Ratios with no waiver of fees and assumption of expenses by the Adviser: Net expenses 3.00% 3.57% 3.84%** Net investment income 1.27% 1.26% 0.35%** =========================================================================================================================== (a) Class C shares were first publicly offered on December 28, 2007. * Assumes initial investment at net asset value at the beginning of the period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of the period and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. *** Not annualized. The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 45 Financial Highlights (continued) ------------------------------------------------------------------------------------------------------ Six Months Ended 4/30/12 Year Ended (unaudited) 10/31/11 ------------------------------------------------------------------------------------------------------ Class Y Net asset value, beginning of period $ 11.30 $ 11.22 ------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income $ 0.19 $ 0.35 Net realized and unrealized gain (loss) on investments 0.06 0.05 ------------------------------------------------------------------------------------------------------ Net increase (decrease) in net assets from investment operations $ 0.25 $ 0.40 Distributions to shareowners: Net investment income (0.18) (0.32) Net realized gain (0.02) -- Tax return of capital -- -- ------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 0.05 $ 0.08 ------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 11.35 $ 11.30 ====================================================================================================== Total return* 2.26% 3.66% Ratio of net expenses to average net assets 0.86%** 0.82% Ratio of net investment income to average net assets 3.36%** 3.01% Portfolio turnover rate 29%** 34% Net assets, end of period (in thousands) $14,236 $11,160 Ratios with no waiver of fees and assumption of expenses by the Adviser: Net expenses 1.20%** 1.55% Net investment income 3.02%** 2.28% ====================================================================================================== Financial Highlights (continued) ------------------------------------------------------------------------------------------------------------------------ 12/28/07 (a) (Commencement Year Ended Year Ended of Operations) 10/31/10 10/31/09 to 10/31/08 ------------------------------------------------------------------------------------------------------------------------ Class Y Net asset value, beginning of period $10.85 $ 9.25 $10.00 ------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income $ 0.34 $ 0.38 $ 0.27 Net realized and unrealized gain (loss) on investments 0.45 1.59 (0.77) ------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net assets from investment operations $ 0.79 $ 1.97 $(0.50) Distributions to shareowners: Net investment income (0.41) (0.37) (0.18) Net realized gain (0.01) -- (0.02) Tax return of capital -- -- (0.05) ------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 0.37 $ 1.60 $(0.75) ------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $11.22 $10.85 $ 9.25 ======================================================================================================================== Total return* 7.48% 21.69% (5.12)%*** Ratio of net expenses to average net assets 0.94% 1.00% 0.89%** Ratio of net investment income to average net assets 3.31% 3.83% 3.22%** Portfolio turnover rate 27% 28% 46%*** Net assets, end of period (in thousands) $4,205 $1,809 $1,542 Ratios with no waiver of fees and assumption of expenses by the Adviser: Net expenses 1.86% 2.48% 2.82%** Net investment income 2.38% 2.35% 1.29%** ======================================================================================================================== (a) Class Y shares were first publicly offered on December 28, 2007. * Assumes initial investment at net asset value at the beginning of the period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of the period. ** Annualized. *** Not annualized. The accompanying notes are an integral part of these financial statements. 46 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 Notes to Financial Statements | 4/30/12 (unaudited) 1. Organization and Significant Accounting Policies Pioneer Global Aggregate Bond 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 current income from an investment grade portfolio with due regard to preservation of capital and prudent investment risk. The Fund offers three classes of shares designated as Class A, Class C, and Class Y shares. Class A, Class C, and Class Y shares were first publicly offered on December 28, 2007. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different rates of class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends from net investment income earned by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per-share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per-share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Each share class has exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. There is no distribution plan for Class Y shares. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gain or loss on investments during the reporting period. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements, which are consistent with those policies generally accepted in the investment company industry: A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Fund is computed once daily, on each day the New York Stock Exchange Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 47 (NYSE) is open, as of the close of regular trading on the NYSE. Fixed income securities with remaining maturity of more than sixty days are valued at prices supplied by independent pricing services, which consider such factors as market prices, market events, quotations from one or more brokers, Treasury spreads, yields, maturities and ratings. Valuations may be supplemented by dealers and other sources, as required. Equity securities that have traded on an exchange are valued at the last sale price on the principal exchange where they are traded. Equity securities that have not traded on the date of valuation, or securities for which sale prices are not available, generally are valued using the mean between the last bid and asked prices. Short-term fixed income securities with remaining maturities of sixty days or less generally are valued at amortized cost. Securities for which independent pricing services are unable to supply prices or for which market prices and/or quotations are not readily available or are considered to be unreliable are valued using fair value methods pursuant to procedures adopted by the Board of Trustees. 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 from exchange prices. At April 30, 2012, there were no securities that were valued using fair value methods (other than securities valued using prices supplied by independent pricing services). 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. 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 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. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. 48 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 B. 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 market price of those securities but are included with the net realized and unrealized gain or loss on investments. C. 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 gains or losses are recorded in the Fund's financial statements. The Fund records realized gains and losses at the time a portfolio 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). D. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal income tax provision is required. Tax years for the prior three fiscal years are subject to examination by federal and state tax authorities. The amounts and characterizations of distributions to shareowners for financial reporting purposes are determined in accordance with federal income tax rules. Therefore, the sources of the Fund's distributions may be shown in the accompanying financial statements as from or in excess of net investment income or as from net realized gain on investment transactions, or as from paid-in capital, depending on the type of book/tax differences that may exist. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 49 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 year ended October 31, 2011 was as follows: -------------------------------------------------------------------------------- 2011 -------------------------------------------------------------------------------- Distributions paid from: Ordinary income $493,109 Long-term capital gain -- Distribution in excess of net investment income -- -------------------------------------------------------------------------------- Total $493,109 ================================================================================ The following shows the components of distributable earnings on a federal income tax basis at October 31, 2011: -------------------------------------------------------------------------------- 2011 -------------------------------------------------------------------------------- Distributable earnings: Undistributed ordinary income $ 25,553 Undistributed long-term gain 45,360 Current year dividend payable (29,327) Unrealized appreciation 1,060,648 -------------------------------------------------------------------------------- Total $1,102,234 ================================================================================ The difference between book-basis and tax-basis net unrealized loss is attributable to the tax deferral of losses on wash sales, adjustments relating to catastrophe bonds, the mark to market on foreign currency and futures contracts, interest on defaulted bonds and interest accruals on preferred stock. E. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly-owned indirect subsidiary of UniCredit S.p.A. (UniCredit), earned $1,400 in underwriting commissions on the sale of Class A shares during the six months ended April 30, 2012. F. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on its respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A and Class C shares of the Fund, respectively (see Note 4). Class Y shares do not pay distribution fees. All expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services are allocated among 50 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 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. G. Risks At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making the Fund more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. The Fund's 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. 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. H. Securities Lending The Fund may lend securities in its portfolio to certain broker-dealers or other institutional investors. When entering into a securities loan transaction, the Fund typically receives cash collateral from the borrower equal to at least the value of the securities loaned, which is invested in temporary investments. Credit Suisse AG, New York Branch, as the Fund's securities lending agent, manages the Fund's securities lending collateral. The income earned on the investment of collateral is shared with the borrower and the lending agent in payment of any rebate due to the borrower with respect to the securities loan, and in compensation for the lending agent's services to the Fund. The Fund also continues to receive payments in lieu of dividends or interest on the securities loaned. Gain or Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 51 loss on the value of the loaned securities that may occur during the term of the loan will be for the account of the Fund. The amount of the collateral is required to be adjusted daily to reflect any price fluctuation in the value of the loaned securities. If the required market value of the collateral is less than the value of the loaned securities, the borrower is required to deliver additional collateral for the account of the Fund prior to the close of business on that day. The Fund has the right, under the lending agreement, to terminate the loan and recover the securities from the borrower with prior notice. The Fund is required to return the cash collateral to the borrower and could suffer a loss if the value of the collateral, as invested, has declined. At April 30, 2012, the Fund had no securities on loan. I. Futures Contracts The Fund may enter into futures transactions to hedge against changes in interest rates, securities prices and currency exchange rates or to seek to increase total return. Futures contracts are types of derivatives. All futures contracts entered into by the Fund are traded on a futures exchange. Upon entering into a futures contract, the Fund is required to deposit with a broker an amount of cash or securities equal to the minimum "initial margin" requirements of the associated futures exchange. Subsequent payments for futures contracts ("variation margin") are paid or received by the Fund, depending on the daily fluctuation in the value of the contracts, and are recorded by the Fund as unrealized 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. These risks may decrease the effectiveness of the Fund's hedging strategies and potentially result in a loss. 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. There were no open futures contracts at April 30, 2012. J. Repurchase Agreements With respect to repurchase agreements entered into by the Fund, the value of the underlying securities (collateral), including accrued interest, is required to be equal to or in excess of the repurchase price. The collateral for all repurchase agreements is held in safekeeping in the customer-only account of the Fund's custodian or a subcustodian of the Fund. The Fund's investment adviser, Pioneer Investment Management, Inc. (PIM), is responsible for determining that the value of the collateral remains at least equal to the repurchase price. 52 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 2. Management Agreement PIM, a wholly-owned indirect subsidiary of UniCredit, manages the Fund's portfolio. Management fees are calculated daily at the annual rate of 0.50% of the Fund's average daily net assets. PIM has contractually agreed to limit ordinary operating expenses of the Fund to the extent required to reduce Fund expenses to 1.00%, 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, 2012 are reflected on the Statement of Operations. These expense limitations are in effect through March 1, 2013. There can be no assurance that PIM will extend the expense limitation agreement for a class of shares beyond the date referred to above. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund as administrative reimbursements. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $19,897 in management fees, administrative costs and certain other reimbursements payable to PIM at April 30, 2012. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimburses PIMSS for out-of-pocket expenses incurred by PIMSS related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the six months ended April 30, 2012, such out-of-pocket expenses by class of shares were as follows: -------------------------------------------------------------------------------- Shareholder Communications: -------------------------------------------------------------------------------- Class A $3,199 Class C 658 Class Y 428 -------------------------------------------------------------------------------- Total $4,285 ================================================================================ Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $2,451 in transfer agent fees and out-of-pocket reimbursements payable to PIMSS at April 30, 2012. 4. Distribution Plan The Fund has adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A and Class C shares. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 53 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 $749 in distribution fees payable to PFD at April 30, 2012. 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 one year of purchase are subject to a CDSC of 1.00%, based on the lower of cost or market value of shares being redeemed. Shares purchases 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, 2012, CDSCs in the amount of $134 were paid to PFD. 5. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS which may result in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the six months ended April 30, 2012, the Fund's expenses were not reduced under such arrangements. 6. Forward Foreign Currency Contracts At April 30, 2012, 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, 2012 was $404,156. Open hedges at April 30, 2012 were as follows: ------------------------------------------------------------------------------------------------------------ Net Contracts to In Exchange Settlement Unrealized Currency deliver For USD Date Value Gain (Loss) ------------------------------------------------------------------------------------------------------------ MYR (Malaysian Ringgit) (91,975) $ (91,975) 5/11/12 $ (91,975) $ (91,975) MYR (Malaysian Ringgit) 280,000 91,975 5/11/12 92,483 92,483 MYR (Malaysian Ringgit) (62,438) (62,438) 5/11/12 (62,438) (62,438) MYR (Malaysian Ringgit) 190,000 62,438 5/11/12 62,757 62,757 KRW (Korean Won) (181,027) (181,027) 6/11/12 (181,027) (181,027) KRW (Korean Won) 206,000,000 181,027 6/11/12 181,765 181,765 ------------------------------------------------------------------------------------------------------------ Total $ 1,564 ============================================================================================================ 54 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 7. Additional Disclosures about Derivative Instruments and Hedging Activities Values of derivative instruments as of April 30, 2012 were as follows: Asset Derivatives 2012 Liabilities Derivatives 2012 Derivatives Not Accounted for -------------------------------------------------------------------- as Hedging Instruments Under Accounting Standards Codification Balance Sheet Balance Sheet (ASC) 815 Location Value Location Value Foreign Exchange Contracts** Net Assets -- $337,005 Net Assets -- $335,441 Receivables Payables -------------------------------------------------------------------------------------------------------- Total $337,005 $335,441 ======================================================================================================== ** The value of foreign exchange contracts is shown as a net receivable on the Statement of Assets and Liabilities. The effect of derivative instruments on the Statement of Operations for the six months ended April 30, 2012 was as follows: -------------------------------------------------------------------------------------------------------- Change in Unrealized Realized Gain Gain or Derivatives Not Accounted for or (Loss) (Loss) on as Hedging Instruments Under on Derivatives Derivatives Accounting Standards Codification Location of Gain or (Loss) On Recognized Recognized (ASC) 815 Derivatives Recognized in Income in Income in Income -------------------------------------------------------------------------------------------------------- Foreign Exchange Contracts Net realized gain on forward foreign $18,385 currency contracts and other assets and liabilities denominated in foreign currencies Foreign Exchange Contracts Change in unrealized gain (loss) on $ (2,019) forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 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 effect until January 20, 2012 was in the amount of $165 million. Under such facility, interest on borrowings was payable at the higher of the London Interbank Offered Rate (LIBOR) on the borrowing date plus 1.25% on an annualized basis or the Federal Funds Rate on the borrowing date plus 1.25% on an annualized basis. The credit facility in effect as of February 15, 2012 is in the amount of $215 million. Under such facility, depending on the type of loan, interest on borrowings is payable at LIBOR plus 0.90% 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 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 55 date, (b) 2% plus the Federal Funds Rate on the borrowing date and (c) 2% plus the overnight Euro dollar 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, 2012, the Fund had no outstanding borrowings. 56 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 Approval of Investment Advisory Agreement Pioneer Investment Management, Inc. (PIM) serves as the investment adviser to Pioneer Global Aggregate Bond Fund (the Fund) pursuant to an investment advisory agreement between PIM and the Fund. In order for PIM to remain the investment adviser of the Fund, the Trustees of the Fund must determine annually whether to renew the investment advisory agreement for the Fund. The contract review process began in March 2011 as the Trustees of the Fund agreed on, among other things, an overall approach and timeline for the process. In July 2011, the Trustees approved the format of the contract review materials and submitted their formal request to PIM to furnish information necessary to evaluate the terms of the investment advisory agreement. The contract review materials were provided to the Trustees in July 2011 and September 2011. After reviewing and discussing the materials, the Trustees submitted a request for additional information to PIM, and materials were provided in response to this request. Meetings of the Independent Trustees of the Fund were held in July, September, October, and November, 2011 to review and discuss the contract review materials. In addition, the Trustees took into account the information related to the Fund provided to the Trustees at each regularly scheduled meeting. At a meeting held on November 29, 2011, based on their evaluation of the information provided by PIM and third parties, the Trustees of the Fund, including the Independent Trustees voting separately, unanimously approved the renewal of the investment advisory agreement for another year. In considering the renewal of the investment advisory agreement, 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 determining to approve the renewal of the agreement. 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, taking into account the investment objective and strategy of the Fund. The Trustees reviewed the terms of the investment advisory agreement. The Trustees also reviewed PIM's investment approach for the Fund, its research process and its process for trade execution. The Trustees considered the resources of PIM and the personnel of PIM who provide investment management services to the Fund. The Trustees considered the non-investment resources and personnel of PIM involved in PIM's services to the Fund, including PIM's compliance and legal resources and personnel. The Trustees also considered the substantial attention and high priority given by PIM's senior management to the Pioneer fund complex. In addition, the Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 57 Trustees considered PIM's plans to increase resources in its investment management function and other enhancements to PIM's advisory capabilities. 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. The Trustees also considered that, as administrator, PIM is responsible for the administration of the Fund's business and other affairs. The Trustees considered the fees paid to PIM for the provision of administration services. Based on these considerations, the Trustees concluded that the nature, extent and quality of services that had been provided by PIM to the Fund were satisfactory and consistent with the terms of the investment advisory agreement. Performance of the Fund The Trustees considered the performance results of the Fund over various time periods. They reviewed information comparing the Fund's performance with the performance of its peer group of funds as classified by Morningstar, Inc. (Morningstar), an independent provider of investment company data, and with the performance of the Fund's benchmark index. The Trustees considered that the Fund's annualized total return was in the fourth quintile of its Morningstar category for the one year period ended June 30, 2011 and in the second quintile of its Morningstar category for the three year period ended June 30, 2011. (In all quintile rankings referred to throughout this disclosure, first quintile is most favorable to the Fund's shareowners. Thus, highest relative performance would be first quintile and lowest relative expenses would also be first quintile.) The Trustees considered that the Fund's twelve month average gross portfolio yield (using month end 30 day effective yields) exceeded the twelve month average yield of the Fund's benchmark index. The Trustees discussed the Fund's recent underperformance and considered that performance had improved in the six months ended June 30, 2011. The Trustees indicated that they were satisfied with the information presented with respect to the Fund's performance. Management Fee and Expenses 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 Trust Research and Consulting, LLC (Strategic Insight), an independent third party. The Trustees considered that the Fund's management fee for the twelve months ended June 30, 2011 was in the second quintile relative to the management fees 58 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 paid by other funds in its Morningstar peer group for the comparable period. The Trustees considered that the Fund's expense ratio for the twelve months ended June 30, 2011 was in the first quintile relative to its Strategic Insight peer group for the comparable period. The Trustees reviewed gross and net management fees charged by PIM to its institutional and other clients, including publicly offered European funds, 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 to its other clients and considered the differences in management fees and profit margins for PIM's Fund and non-Fund services. In evaluating the fees associated with PIM's client accounts, the Trustees took into account the respective demands, resources and complexity associated with the Fund and 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 the investment advisory agreement with the Fund, PIM performs 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 entrepreneurial risks associated with PIM's management of the Fund and 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 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 realized by PIM and its affiliates 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 funds and fund shareholders. The Trustees recognize that economies of scale are difficult to identify and quantify, rarely identifiable on a Fund-by-Fund basis, and that, among other factors that Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 59 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 Funds. 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 particularly, for example during the recent difficult periods for financial markets, as the level of services was maintained notwithstanding a significant decline in PIM's fee revenues from the Funds. Accordingly, the Trustees concluded that economies of scale, if any, were being appropriately shared with the Fund. Other Benefits The Trustees considered the other benefits to PIM from its relationship with the Fund. The Trustees considered the character and amount of fees paid by the Fund, other than under the investment advisory 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. The Trustees considered the intangible benefits to PIM by virtue of its relationship with the Fund and the other Pioneer funds. The Trustees concluded that the receipt of these benefits was reasonable in the context of the overall relationship between PIM and the Fund. Conclusion After consideration of the factors described above as well as other factors, the Trustees, including all of the Independent Trustees, concluded that the investment advisory agreement between PIM and the Fund, including the fees payable thereunder, was fair and reasonable and voted to approve the proposed renewal of the investment advisory agreement for the Fund. 60 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 Trustees, Officers and Service Providers Trustees John F. Cogan, Jr., Chairman David R. Bock Mary K. Bush Benjamin M. Friedman Margaret B.W. Graham Daniel K. Kingsbury Thomas J. Perna Marguerite A. Piret Stephen K. West Officers John F. Cogan, Jr., President Daniel K. Kingsbury, Executive Vice President Mark E. Bradley, Treasurer Christopher J. Kelley, Secretary Investment Adviser and Administrator Pioneer Investment Management, Inc. Custodian Brown Brothers Harriman & Co. Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Bingham McCutchen LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Sub-Administrator State Street Bank and Trust Company 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. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 61 This page for your notes. 62 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 This page for your notes. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 63 This page for your notes. 64 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 This page for your notes. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 65 This page for your notes. 66 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 This page for your notes. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 67 This page for your notes. 68 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/12 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Write to us: -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: us.pioneerinvestments.com This report must be preceded or accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. Pioneer Global High Yield Fund -------------------------------------------------------------------------------- Semiannual Report | April 30, 2012 -------------------------------------------------------------------------------- Ticker Symbols: Class A PGHYX Class B PGHBX Class C PGYCX Class Y GHYYX Class Z PGHZX [LOGO]PIONEER Investments(R) visit us: us.pioneerinvestments.com Table of Contents Letter to Shareowners 2 Portfolio Management Discussion 4 Portfolio Summary 9 Prices and Distributions 10 Performance Update 11 Comparing Ongoing Fund Expenses 16 Schedule of Investments 18 Financial Statements 56 Notes to Financial Statements 65 Approval of Investment Advisory Agreement 77 Trustees, Officers and Service Providers 81 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 1 President's Letter Dear Shareowner, The U.S. economy continued its recovery through the first quarter of 2012, even as broader global concerns weighed on investors. The U.S. unemployment rate fell to 8.1% in April, and some indicators suggest that it may continue to trend down. The housing market continued to improve, fueled in part by record-low mortgage rates. The risk of rising oil prices appeared to recede. The improved outlook helped U.S. equity markets to perform well in the first quarter, with the Standard & Poor's 500 Index rising by 12%. For bond investors, the riskier sectors of the bond market fared the best. The broad bond market, as measured by the Barclays Capital Aggregate Bond Index, rose by just 0.3%, while the high-yield bond market, as measured by the Bank of America Merrill Lynch High Yield Master II Index, rose by 5.15%. We are cautiously optimistic that the U.S. economy will continue to improve. But we are also closely monitoring macroeconomic concerns that could change the market's direction, such as the lingering debt woes in Europe, the state of the Chinese economy, and the U.S. government's fiscal situation. Clouds have continued to hover over Europe, as the exit of Greece from the Euro-zone remains a possibility. Meanwhile, China continues to face a potential slowdown in economic growth. In the U.S., tax increases and spending cuts scheduled to take effect at year-end should, unless fiscal policy changes, sharply reduce the budget deficit -- which would be very good for the country in the longer run -- but also could potentially stall U.S. economic growth in 2013. All of these considerations may lead to further market volatility. At Pioneer, we have long advocated the benefits of staying diversified and investing for the long term. The strategy has generally performed well for many investors. Our advice, as always, is to work closely with a trusted financial advisor to discuss your goals and work together to develop an investment strategy that meets your individual needs. There is no single best strategy that works for every investor. Pioneer's investment professionals focus on finding good opportunities to invest in both equity and bond markets using the same disciplined investment approach we have used since 1928. Our strategy is to identify undervalued individual securities with the greatest potential for success, carefully weighing risk against reward. Our teams of investment professionals continually 2 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 monitor and analyze the relative valuations of different sectors and securities globally to help build portfolios that we believe can help you achieve your investment goals. We invite you to learn more about Pioneer and our time-tested approach to investing by consulting with your financial advisor or visiting us online at us.pioneerinvestments.com. We greatly appreciate your trust in us, and we thank you for investing with Pioneer. Sincerely, /s/ Daniel K. Kingsbury Daniel K. Kingsbury President and CEO Pioneer Investment Management USA Inc. Any information in this shareowner report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 3 Portfolio Management Discussion | 4/30/12 Despite renewed concerns about European sovereign-debt problems, improved investor confidence in the prospects for a sustained recovery in world markets helped drive solid returns by higher-yielding, lower-rated fixed-income investments during most of the six-month period ended April 30, 2012. In the following interview, lead portfolio manager Andrew Feltus and assistant portfolio manager Tracy Wright discuss the factors that affected the performance of Pioneer Global High Yield Fund during the six-month period. Mr. Feltus, senior vice president and portfolio manager at Pioneer, and Ms. Wright, senior vice president and portfolio manager at Pioneer, are responsible for the daily management of the Fund. Q How did the Fund perform during the six months ended April 30, 2012? A Pioneer Global High Yield Fund Class A shares returned 5.68% at net asset value during the six months ended April 30, 2012, while the Fund's benchmarks, the Bank of America (BofA) Merrill Lynch (ML) High Yield Master II Index and the BofA ML Global High Yield and Emerging Markets Plus Index, returned 6.45% and 6.24%, respectively. During the same six-month period, the average return of the 514 mutual funds in Lipper's High Current Yield Funds category was 6.39%. At the end of the period on April 30, 2012, the 30-day standardized SEC yield of the Fund's Class A shares was 9.66%. Q How would you describe the investment environment during the six months ended April 30, 2012? A An improving global economy delivered a generally favorable backdrop for investments in credit-sensitive securities, including domestic high-yield corporate bonds and emerging market debt. The early weeks of the period, starting in November 2011, saw continued stabilization in the capital markets following a severe sell-off in the third calendar quarter of 2011. Then, in December 2011, a succession of positive developments triggered a significant change in market attitudes, and credit-sensitive investments embarked on a robust rally that continued through March of 2012. Contributing to the improving investment backdrop were reports suggesting a strengthening of the economic recovery in the United States, accompanied by a long-delayed improvement in the jobs market. Meanwhile, more accommodative monetary policies by the European Central Bank (ECB) injected additional money into the financial system in Europe and bolstered the liquidity of European banks, which also boosted confidence in the markets. At the same time, the Chinese government began an easing of monetary policy, which helped to quell fears about a slump in that growing economy. However, markets grew choppier in the final month 4 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 of the six-month period (April 2012), as the approach of national elections in Greece raised new worries that debt problems in Europe could have a contagious effect on the global markets. Q How was the Fund positioned during the six months ended April 30, 2012, and how did the positioning affect relative performance? A We maintained a relatively stable overall asset allocation strategy in the Fund's portfolio throughout the six months, with a primary focus on domestic high-yield bonds as well as a healthy allocation to emerging market debt. Over the six months, we increased portfolio exposure to emerging market currencies, notably in Asia, where many economies were growing strongly while maintaining discipline in their national fiscal and monetary policies. We reduced the Fund's exposure to Europe, primarily because of the severe debt problems in Greece and several other nations, which had raised questions about the financial strength of European banks. At the end of the period, on April 30, 2012, nearly 62% of the Fund's assets were invested in the United States, approximately 27% in emerging markets, including Asia, and about 10% in the European region. By sector, nearly 56% of the Fund's assets were invested in U.S. high-yield corporate bonds, which was the largest portfolio allocation. During the six-month period, we built up portfolio positions in domestic high-yield, floating-rate loans, which represented about 9% of net assets as of April 30, 2012. We like the more senior position of floating-rate loans in the corporate capital structure, which gives added protection to investors. In addition, valuations of floating-rate bank loans appeared attractive relative to high-yield bonds of higher quality (BB-rated). We also were attracted by the fact that the yields of floating-rate loans have the potential to increase should interest rates increase. Finally, the Fund was underweighted both in Europe and in Japan, where we saw few attractive opportunities. The Fund's focus on both U.S. high-yield and emerging market debt generally supported performance during the period. However, the portfolio's underweighted position in European high-yield corporate bonds detracted from performance, as lower-rated European corporate bonds outperformed after the ECB eased monetary policy. Nevertheless, we have continued to be cautious about the Fund's investments in Europe, and we have maintained the underweighted position there. Q What types of individual investments had the biggest impact on the Fund's relative performance during the six months ended April 30, 2012? A The Fund had solid results from holdings in both U.S. high-yield corporates and the emerging markets. The top overall contributor to the Fund's performance during the six-month period was the convertible debt of a U.S. company, WESCO International, a distributor of industrial and electrical Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 5 components. WESCO's business and equity performed well during the period. Other strong performers included the bonds of Burger King, which gained in value when the company announced plans for an initial stock offering, and of Jefferies Group, an investment bank. In the case of Jefferies, the company's debt had fallen in value after MF Global, another investment bank, went bankrupt. However, our credit research had led us to believe that the market had misunderstood Jefferies' financial strength and business, and so we built up a Fund position in the company's bonds. When the investment bank went on to announce solid earnings, the price of the bonds bounced back. Another high-yield holding that supported Fund performance during the period was Connacher Oil & Gas, a Canada-based integrated energy company that improved its balance sheet after it sold assets. The investment also benefited from a stronger Canadian dollar. Emerging market corporates was the Fund's best-performing sector during the six-month period. Top performers from that part of the portfolio included the debt of CEMEX, a global building materials company based in Mexico, and securities of Minerva and Marfrig, two Brazilian beef producers. The Fund did have some disappointing holdings during the period. Underperformers in the portfolio included the debt of AGY, a company that encountered cost-control problems in its production of fiber materials, and of Stanadyne, a producer of components for farm machinery that encountered short-term difficulties while establishing offshore production capabilities. The Fund also experienced two defaults during the six months ended April 30, 2012. The more serious default came from different airport facility securities backed by revenues from American Airlines. The securities fell in value after AMR, parent of the airline, unexpectedly filed for federal bankruptcy protection late in 2011. The other default in the portfolio involved the debt of Sino Forest, a Canada-based forest products company operating in China. We had expected that default, however, and it did not have a noteworthy impact on the Fund's performance during the six-month period. Q What is your investment outlook? A We have positioned the Fund for a period of continued, moderate economic growth, both domestically and globally, although we maintain a sense of caution about Europe. In the U.S, industrial output and retail sales have been positive, while the employment market finally is beginning to show improvement and the housing industry is showing evidence of stabilization. Meanwhile, corporate profits have remained healthy and most companies have strengthened their balance sheets. Default rates remain low by historical benchmarks. All of these factors, we think, should support high-yield investments. It is 6 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 important to keep in mind, however, that the current low-interest-rate environment has resulted in relatively lower yields from corporate bonds on an absolute basis, and that necessarily limits the returns that can reasonably be expected. While emerging market corporate bonds have rallied, we think they continue to offer opportunity, both because of the healthy growth trends in many emerging markets and because a number of emerging market-based companies have emerged as major players in the global economy. We think the Fund's ability to invest flexibly in higher-yielding opportunities throughout the world gives it the potential for solid returns, while its diversified* approach can help to reduce volatility. Please refer to the Schedule of Investments on pages 18-55 for a full listing of Fund securities. * Diversification does not assure a profit or protect against loss in a declining market. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 7 Investments in high-yield or lower-rated securities are subject to greater-than-average risk. 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. Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, economic, and political conditions. Investments in the Fund are subject to possible loss due to the financial failure of issuers of underlying securities and their inability to meet their debt obligations. Prepayment risk is the chance that mortgage-backed securities will be paid off early if falling interest rates prompt homeowners to refinance their mortgages. 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 associated with falling interest rates. 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. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. 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. These statements should not be relied upon for any other purposes. 8 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 Portfolio Summary | 4/30/12 Portfolio Quality -------------------------------------------------------------------------------- (As a percentage of long-term securities, based on S&P ratings) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] AAA 0.4% AA 0.3% A 1.1% BBB 6.0% BB 23.7% B 46.6% CCC 11.2% Not Rated 9.6% Cash Equivalents 1.1% Bond ratings are ordered highest to lowest in portfolio. Based on Standard & Poor's measures, AAA (highest possible rating) through BBB are considered investment grade; BB or lower ratings are considered non-investment grade. Cash equivalents and some bonds may not be rated. Geographical Distribution -------------------------------------------------------------------------------- (As a percentage of long-term holdings) [THE FOLLOWING DATA WAS REPRESENTED AS A BAR CHART IN THE PRINTED MATERIAL] United States 57.0% Cayman Islands 5.1% Mexico 3.9% Luxembourg 3.7% Argentina 3.4% Netherlands 3.0% Brazil 2.9% United Kingdom 2.6% Ireland 2.4% China 2.0% Canada 1.8% Singapore 1.3% Peru 1.2% Ohter (individually less than 1%) 9.7% 10 Largest Holdings -------------------------------------------------------------------------------- (As a percentage of total long-term holdings)* 1. Cincinnati Bell, Inc., 8.25%, 10/15/17 0.84% 2. Minerva Overseas II, Ltd., 10.875%, 11/15/19 (144A) 0.80 3. Energisa SA, 9.5%, 1/29/49 (Perpetual) (144A) 0.71 4. WESCO International, Inc., 6.0%, 9/15/29 0.71 5. LyondellBasell Industries NV, 5.0%, 4/15/19 (144A) 0.70 6. Alliance One International, Inc., 10.0%, 7/15/16 0.70 7. Ford Motor Co., 4.25%, 11/15/16 0.69 8. Alpha Appalachia Holdings, Inc., 3.25%, 8/1/15 0.69 9. Marfrig Overseas, Ltd., 9.5%, 5/4/20 (144A) 0.69 10. Chrysler Group LLC, Tranche B Term Loan, 4/28/17 0.68 * The 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 | 4/30/12 9 Prices and Distributions | 4/30/12 Net Asset Value per Share -------------------------------------------------------------------------------- Class 4/30/12 10/31/11 A $ 9.94 $ 9.83 -------------------------------------------------------------------------------- B $ 9.95 $ 9.83 -------------------------------------------------------------------------------- C $ 9.92 $ 9.80 -------------------------------------------------------------------------------- Y $ 9.77 $ 9.66 -------------------------------------------------------------------------------- Z $10.23 $10.11 -------------------------------------------------------------------------------- Distributions per Share: 11/1/11-4/30/12 -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains A $0.4325 $ -- $ -- -------------------------------------------------------------------------------- B $0.3934 $ -- $ -- -------------------------------------------------------------------------------- C $0.3993 $ -- $ -- -------------------------------------------------------------------------------- Y $0.4441 $ -- $ -- -------------------------------------------------------------------------------- Z $0.4583 $ -- $ -- -------------------------------------------------------------------------------- Index Definition -------------------------------------------------------------------------------- The Bank of America (BofA) Merrill Lynch (ML) Global High Yield and Emerging Markets Plus Index tracks the performance of the below and border-line investment-grade global debt markets denominated in the major developed market currencies. The index includes sovereign issuers rated BBB1 and lower along with corporate issuers rated BB1 and lower. There are no restrictions on issuer country of domicile. However, the bonds must be publicly issued in a developed market (i.e., investment-grade country). The BofA ML High Yield Master II Index is a 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 11-15. 10 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 Performance Update | 4/30/12 Class A Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Global High Yield Fund at public offering price, compared to that of the Bank of America (BofA) Merrill Lynch (ML) High Yield Master II Index and the Bank of America (BofA) Merrill Lynch (ML) Global High Yield and Emerging Markets Plus Index. Average Annual Total Returns (As of April 30, 2012) -------------------------------------------------------------------------------- Net Asset Public Offering Period Value (NAV) Price (POP) -------------------------------------------------------------------------------- 10 Years 9.79% 9.28% 5 Years 4.78 3.83 1 Year -1.40 -5.88 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2012) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 1.09% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global BofA ML Global High Yield BofA ML High High Yield Fund and Emerging Markets Plus Index Yield Master II Index --------------- ------------------------------- --------------------- 4/02 9,550 10,000 10,000 11,370 11,422 10,760 4/04 13,376 13,127 12,346 15,171 14,487 13,145 4/06 16,931 15,942 14,337 19,239 18,015 16,116 4/08 18,658 18,327 15,983 13,218 15,720 13,635 4/10 21,380 22,048 19,663 24,645 25,006 22,286 4/12 24,299 26,230 23,434 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. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 11 Performance Update | 4/30/12 Class B Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Global High Yield Fund, compared to that of the Bank of America (BofA) Merrill Lynch (ML) High Yield Master II Index and the Bank of America (BofA) Merrill Lynch (ML) Global High Yield and Emerging Markets Plus Index. Average Annual Total Returns (As of April 30, 2012) -------------------------------------------------------------------------------- If If Period Held Redeemed -------------------------------------------------------------------------------- Life-of-Class (11/21/03) 6.96% 6.96% 5 Years 3.99 3.99 1 Year -2.11 -5.74 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2012) -------------------------------------------------------------------------------- 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 Global High Yield BofA ML High High Yield Fund and Emerging Markets Plus Index Yield Master II Index --------------- ------------------------------- --------------------- 11/03 10,000 10,000 10,000 4/04 10,277 10,322 10,396 11,563 11,391 11,069 4/06 12,811 12,536 12,072 14,430 14,166 13,571 4/08 13,879 14,411 13,458 9,745 12,361 11,481 4/10 15,660 17,337 16,557 17,923 19,663 18,766 4/12 17,545 20,626 19,732 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. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. "If Redeemed" returns reflect the deduction of applicable contingent deferred sales charge (CDSC). Effective December 1, 2004, the period during which a CDSC is applied to withdrawals was shortened to 5 years. The maximum CDSC for Class B shares is 4% and declines over five years. For more complete information, please see the prospectus. Note: Shares purchased prior to December 1, 2004 remain subject to the CDSC in effect at the time you purchased those shares. For performance information for shares purchased prior to December 1, 2004, please visit us.pioneerinvestments.com. 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 taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 12 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 Performance Update | 4/30/12 Class C Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Global High Yield Fund, compared to that of the Bank of America (BofA) Merrill Lynch (ML) High Yield Master II Index and the Bank of America (BofA) Merrill Lynch (ML) Global High Yield and Emerging Markets Plus Index. Average Annual Total Returns (As of April 30, 2012) -------------------------------------------------------------------------------- If If Period Held Redeemed -------------------------------------------------------------------------------- Life-of-Class (11/21/03) 6.94% 6.94% 5 Years 4.07 4.07 1 Year -1.91 -1.91 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2012) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 1.78% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global BofA ML Global High Yield BofA ML High High Yield Fund and Emerging Markets Plus Index Yield Master II Index --------------- ------------------------------- --------------------- 11/03 10,000 10,000 10,000 4/04 10,211 10,322 10,396 11,487 11,391 11,069 4/06 12,724 12,536 12,072 14,343 14,166 13,571 4/08 13,810 14,411 13,458 9,699 12,361 11,481 4/10 15,592 17,337 16,557 17,853 19,663 18,766 4/12 17,512 20,626 19,732 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). The performance of Class C shares does not reflect the 1% front-end sales charge in effect prior to February 1, 2004. If you paid a 1% sales charge, your returns would be lower than those shown above. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 13 Performance Update | 4/30/12 Class Y Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Pioneer Global High Yield Fund, compared to that of the Bank of America (BofA) Merrill Lynch (ML) High Yield Master II Index and the Bank of America (BofA) Merrill Lynch Global High Yield and Emerging Markets Plus Index. Average Annual Total Returns (As of April 30, 2012) -------------------------------------------------------------------------------- If If Period Held Redeemed -------------------------------------------------------------------------------- 10 Years 9.83% 9.83% 5 Years 5.15 5.15 1 Year -1.02 -1.02 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2012) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 0.74% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Global BofA ML Global High Yield BofA ML High High Yield Fund and Emerging Markets Plus Index Yield Master II Index --------------- ------------------------------- --------------------- 4/02 5,000,000 5,000,000 5,000,000 5,953,821 5,710,784 5,380,191 4/04 7,004,391 6,563,256 6,173,172 7,944,341 7,243,344 6,572,556 4/06 8,712,869 7,971,045 7,168,423 9,932,801 9,007,701 8,058,206 4/08 9,691,166 9,163,539 7,991,510 6,899,507 7,859,932 6,817,601 4/10 11,177,255 11,023,867 9,831,250 12,900,688 12,502,788 11,143,223 4/12 12,768,943 13,115,210 11,716,966 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Performance shown for Class Y shares for periods prior to the inception of Class Y shares on December 28, 2005, reflects the NAV performance of the Fund's Class A shares. The performance does not reflect differences in expenses, including the Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares are generally higher than those of Class Y shares, the performance for Class Y shares prior to their inception on December 28, 2005 would have been higher than the performance shown. 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. 14 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 Performance Update | 4/30/12 Class Z Shares Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Global High Yield Fund, compared to that of the Bank of America (BofA) Merrill Lynch (ML) High Yield Master II Index and the Bank of America (BofA) Merrill Lynch Global High Yield and Emerging Markets Plus Index. Average Annual Total Returns (As of April 30, 2012) -------------------------------------------------------------------------------- If If Period Held Redeemed -------------------------------------------------------------------------------- 10 Years 10.15% 10.15% 5 Years 5.58 5.58 1 Year -1.37 -1.37 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2012) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 0.76% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Global BofA ML Global High Yield BofA ML High High Yield Fund and Emerging Markets Plus Index Yield Master II Index --------------- ------------------------------- --------------------- 4/02 10,000 10,000 10,000 11,908 11,422 10,760 4/04 14,009 13,127 12,346 15,889 14,487 13,145 4/06 17,731 15,942 14,337 20,040 18,015 16,116 4/08 19,613 18,327 15,983 14,235 15,720 13,635 4/10 23,036 22,048 19,663 26,660 25,006 22,286 4/12 26,295 26,230 23,434 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Performance shown for Class Z shares for periods prior to the inception of Class Z shares on July 6, 2007, reflects the NAV performance of the Fund's Class A shares. The performance does not reflect differences in expenses, including the Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares are generally higher than those of Class Z shares, the performance for Class Z shares prior to their inception on July 6, 2007 would have been higher than the performance shown. Class Z 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. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 15 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: 1. Divide your account value by $1,000 Example: an $8,600 account value [divided by] $1,000 = 8.6 2. Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Global High Yield Fund Based on actual returns from November 1, 2011 through April 30, 2012. ------------------------------------------------------------------------------------------------------------- Share Class A B C Y Z ------------------------------------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 $1,000.00 $1,000.00 Value on 11/1/11 ------------------------------------------------------------------------------------------------------------- Ending Account Value $1,056.80 $1,053.70 $1,054,50 $1,059.10 $1,058.90 (after expenses) on 4/30/12 ------------------------------------------------------------------------------------------------------------- Expenses Paid $5.73 $9.80 $9.09 $4.15 $4.35 During Period* ------------------------------------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.12%, 1.92%, 1.78%, 0.81% and 0.85%, for Class A, Class B, Class C, Class Y and Class Z shares, respectively, multiplied by the average account value over the period, multiplied by 182/366 (to reflect the one-half year period). 16 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 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% per year return before expenses, reflecting the period from November 1, 2011 through April 30, 2012. ------------------------------------------------------------------------------------------------------------- Share Class A B C Y Z ------------------------------------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 $1,000.00 $1,000.00 Value on 11/1/11 ------------------------------------------------------------------------------------------------------------- Ending Account Value $1,019.29 $1,015.32 $1,016.01 $1,020.84 $1,020.64 (after expenses) on 4/30/12 ------------------------------------------------------------------------------------------------------------- Expenses Paid $5.62 $9.62 $8.92 $4.07 $4.27 During Period* ------------------------------------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.12%, 1.92%, 1.78%, 0.81% and 0.85%, for Class A, Class B, Class C, Class Y and Class Z shares, respectively, multiplied by the average account value over the period, multiplied by 182/366 (to reflect the one-half year period). Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 17 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) -------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value -------------------------------------------------------------------------------------------------- CONVERTIBLE CORPORATE BONDS -- 6.2% ENERGY -- 0.8% Oil & Gas Exploration & Production -- 0.1% 4,130,000 BB/NR Chesapeake Energy Corp., 2.5%, 5/15/37 $ 3,510,500 -------------------------------------------------------------------------------------------------- Coal & Consumable Fuels -- 0.7% 19,320,000 BB-/NR Alpha Appalachia Holdings, Inc., 3.25%, 8/1/15 $ 17,677,800 1,305,000 CCC/B2 James River Coal Co., 3.125%, 3/15/18 484,481 -------------- $ 18,162,281 -------------- Total Energy $ 21,672,781 -------------------------------------------------------------------------------------------------- MATERIALS -- 0.7% Construction Materials -- 0.4% 11,050,000 NR/NR Cemex SAB de CV, 3.75%, 3/15/18 $ 9,875,938 -------------------------------------------------------------------------------------------------- Forest Products -- 0.3% 14,559,000 NR/NR Sino-Forest Corp., 4.25%, 12/15/16 (144A) (c) $ 4,076,520 12,150,000 NR/WR Sino-Forest Corp., 5.0%, 8/1/13 (c) 3,462,750 -------------- $ 7,539,270 -------------- Total Materials $ 17,415,208 -------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 1.0% Electrical Components & Equipment -- 0.1% 1,250,000 B/B2 General Cable Corp., 4.5%, 11/15/29 (Step) $ 1,328,125 -------------------------------------------------------------------------------------------------- Construction & Farm Machinery & Heavy Trucks -- 0.2% 6,285,000 B/NR Navistar International Corp., 3.0%, 10/15/14 $ 6,481,406 -------------------------------------------------------------------------------------------------- Trading Companies & Distributors -- 0.7% 7,423,000 B/NR WESCO International, Inc., 6.0%, 9/15/29 $ 18,204,908 -------------- Total Capital Goods $ 26,014,439 -------------------------------------------------------------------------------------------------- TRANSPORTATION -- 0.1% Marine -- 0.1% 5,171,454 NR/NR Horizon Lines, Inc., 6.0%, 4/15/17 $ 2,223,725 1,436,515 NR/NR Horizon Lines, Inc., 6.0%, 4/15/17 (d) 617,701 -------------- $ 2,841,426 -------------- Total Transportation $ 2,841,426 -------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.7% Automobile Manufacturers -- 0.7% 12,029,000 BB+/Ba2 Ford Motor Co., 4.25%, 11/15/16 $ 17,863,065 -------------- Total Automobiles & Components $ 17,863,065 -------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 18 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 0.2% Tobacco -- 0.2% 5,135,000 CCC+/Caa1 Alliance One International, Inc., 5.5%, 7/15/14 $ 4,948,856 -------------- Total Food, Beverage & Tobacco $ 4,948,856 ---------------------------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 0.1% Health Care Technology -- 0.1% 3,485,000 NR/NR WebMD Health Corp., 2.5%, 1/31/18 $ 3,010,169 -------------- Total Health Care Equipment & Services $ 3,010,169 ---------------------------------------------------------------------------------------------------- PHARMACEUTICALS, BIOTECHNOLOGY & LIFE SCIENCES -- 0.5% Biotechnology -- 0.5% 7,600,000 NR/NR Cubist Pharmaceuticals, Inc., 2.5%, 11/1/17 $ 11,932,000 -------------- Total Pharmaceuticals, Biotechnology & Life Sciences $ 11,932,000 ---------------------------------------------------------------------------------------------------- REAL ESTATE -- 0.2% Real Estate Operating Companies -- 0.2% 3,805,000 B-/B3 Forest City Enterprises, Inc., 4.25%, 8/15/18 (144A) $ 3,914,394 1,900,000 B-/NR Forest City Enterprises, Inc., 5.0%, 10/15/16 2,598,250 -------------- $ 6,512,644 -------------- Total Real Estate $ 6,512,644 ---------------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 0.4% Application Software -- 0.4% 1,025,000 NR/NR Mentor Graphics Corp., 4.0%, 4/1/31 $ 1,091,625 6,865,000 BB-/NR Nuance Communications, Inc., 2.75%, 11/1/31 (144A) 7,688,800 -------------- $ 8,780,425 ---------------------------------------------------------------------------------------------------- Systems Software -- 0.0% 565,000 NR/NR Rovi Corp., 2.625%, 2/15/40 $ 576,300 -------------- Total Software & Services $ 9,356,725 ---------------------------------------------------------------------------------------------------- TECHNOLOGY HARDWARE & EQUIPMENT -- 0.2% Computer Storage & Peripherals -- 0.2% 4,435,000 BB/NR SanDisk Corp., 1.5%, 8/15/17 $ 4,595,769 ---------------------------------------------------------------------------------------------------- Electronic Components -- 0.0% 1,605,000 BB+/NR Vishay Intertechnology, Inc., 2.25%, 5/15/41 (144A) $ 1,294,031 -------------- Total Technology Hardware & Equipment $ 5,889,800 ---------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 19 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) --------------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value --------------------------------------------------------------------------------------------------------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 1.2% Semiconductor Equipment -- 0.4% 3,400,000 BBB-/Baa1 Lam Research Corp., 1.25%, 5/15/18 (144A) $ 3,400,000 5,515,000 NR/NR Novellus Systems, Inc., 2.625%, 5/15/41 (144A) 7,314,269 -------------- $ 10,714,269 --------------------------------------------------------------------------------------------------------------- Semiconductors -- 0.8% 4,650,000 NR/NR JA Solar Holdings Co., Ltd., 4.5%, 5/15/13 $ 3,830,438 10,750,000 NR/NR ReneSola, Ltd., 4.125%, 3/15/18 (144A) 5,925,938 3,687,000 NR/NR SunPower Corp., 4.75%, 4/15/14 3,382,822 11,919,000 NR/NR Suntech Power Holdings Co., Ltd., 3.0%, 3/15/13 8,194,312 -------------- $ 21,333,510 -------------- Total Semiconductors & Semiconductor Equipment $ 32,047,779 --------------------------------------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES -- 0.1% Integrated Telecommunication Services -- 0.1% 2,485,000 NR/NR MasTec, Inc., 4.0%, 6/15/14 $ 3,273,988 -------------- Total Telecommunication Services $ 3,273,988 --------------------------------------------------------------------------------------------------------------- TOTAL CONVERTIBLE CORPORATE BONDS (Cost $174,229,136) $ 162,778,880 --------------------------------------------------------------------------------------------------------------- Shares --------------------------------------------------------------------------------------------------------------- PREFERRED STOCKS -- 0.4% CONSUMER SERVICES -- 0.0% Hotels, Resorts & Cruise Lines -- 0.0% 17,350 NR/NR Perseus Holding Corp., 14.0%, 4/15/14 (144A) $ 303,625 -------------- Total Consumer Services $ 303,625 --------------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.4% Other Diversified Financial Services -- 0.3% 355,600 8.12 CCC+/B3 GMAC Capital Trust I, Floating Rate Note, 2/15/40 $ 8,516,620 --------------------------------------------------------------------------------------------------------------- Consumer Finance -- 0.1% 3,100 CCC+/B3 Ally Financial, Inc., 7.0%, 12/31/99 (Perpetual) (144A) $ 2,631,319 -------------- Total Diversified Financials $ 11,147,939 --------------------------------------------------------------------------------------------------------------- TOTAL PREFERRED STOCKS (Cost $11,680,355) $ 11,451,564 --------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 20 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------- CONVERTIBLE PREFERRED STOCK -- 0.0% BANKS -- 0.0% Diversified Banks -- 0.0% 445 BBB+/Ba1 Wells Fargo & Co., 7.5%, 12/31/99 (Perpetual) $ 498,413 -------------- Total Banks $ 498,413 ---------------------------------------------------------------------------------------------------- TOTAL CONVERTIBLE PREFERRED STOCK (Cost $467,249) $ 498,413 ---------------------------------------------------------------------------------------------------- Shares ---------------------------------------------------------------------------------------------------- COMMON STOCKS -- 1.0% ENERGY -- 0.3% Oil & Gas Drilling -- 0.1% 46,147 Rowan Companies, Inc.* $ 1,593,456 ---------------------------------------------------------------------------------------------------- Oil & Gas Equipment & Services -- 0.0% 248,438 Sevan Marine ASA* $ 590,475 ---------------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 0.2% 145,359,884 Norse Energy Corp., ASA* $ 6,350,810 -------------- Total Energy $ 8,534,741 ---------------------------------------------------------------------------------------------------- MATERIALS -- 0.5% Commodity Chemicals -- 0.1% 55,345 Georgia Gulf Corp.* $ 1,961,980 ---------------------------------------------------------------------------------------------------- Diversified Metals & Mining -- 0.3% 6,615,974 Blaze Recycling and Metals LLC (Class A) Units (d) $ 4,366,543 95,846 Freeport-McMoRan Copper & Gold, Inc. (Class B) 3,670,902 -------------- $ 8,037,445 ---------------------------------------------------------------------------------------------------- Steel -- 0.1% 134,106 Vale SA (A.D.R.) $ 2,900,713 ---------------------------------------------------------------------------------------------------- Forest Products -- 0.0% 244,090 Ainsworth Lumber Co., Ltd.* $ 309,022 -------------- Total Materials $ 13,209,160 ---------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 0.0% Building Products -- 0.0% 894 Panolam Holdings Co.* (d) $ 438,060 -------------- Total Capital Goods $ 438,060 ---------------------------------------------------------------------------------------------------- TRANSPORTATION -- 0.0% Marine -- 0.0% 136,065 Horizon Lines, Inc.* $ 361,933 -------------- Total Transportation $ 361,933 ---------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 21 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ---------------------------------------------------------------------------------------------------- Floating S&P/Moody's Shares Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.2% Auto Parts & Equipment -- 0.2% 99,863 Lear Corp. $ 4,144,314 -------------- Total Automobiles & Components $ 4,144,314 ---------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.0% Other Diversified Financial Services -- 0.0% 24,638 BTA Bank JSC (G.D.R.) (144A)* $ 54,204 -------------- Total Diversified Financials $ 54,204 ---------------------------------------------------------------------------------------------------- REAL ESTATE -- 0.0% Real Estate Development -- 0.0% 159,647 Newhall Land Development LLC* $ 207,541 -------------- Total Real Estate $ 207,541 ---------------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 0.0% Data Processing & Outsourced Services -- 0.0% 33,046 Perseus Holdings, Ltd.* $ 82,615 -------------- Total Software & Services $ 82,615 ---------------------------------------------------------------------------------------------------- TOTAL COMMON STOCKS (Cost $32,040,777) $ 27,032,568 ---------------------------------------------------------------------------------------------------- Principal Amount ($) ---------------------------------------------------------------------------------------------------- ASSET BACKED SECURITIES -- 2.0% AUTOMOBILES & COMPONENTS -- 0.0% Automobile Manufacturers -- 0.0% 550,000 BB/Ba1 AmeriCredit Automobile Receivables Trust, 6.23%, 7/9/18 $ 577,912 -------------- Total Automobiles & Components $ 577,912 ---------------------------------------------------------------------------------------------------- BANKS -- 1.3% Thrifts & Mortgage Finance -- 1.3% 475,638 0.33 CCC/Caa3 ACE Securities Corp., Floating Rate Note, 1/25/37 $ 132,306 2,837,523 1.14 AA+/Baa3 ACE Securities Corp., Floating Rate Note, 12/25/34 2,134,271 1,260,479 1.51 CCC/Caa3 Amortizing Residential Collateral Trust, Floating Rate Note, 1/25/32 536,382 499,566 0.82 AAA/Aaa Bayview Financial Acquisition Trust, Floating Rate Note, 8/28/44 479,887 1,480,000 0.69 CCC/B2 Bear Stearns Asset Backed Securities Trust, Floating Rate Note, 1/25/47 537,687 1,350,000 1.29 BB/A2 Bear Stearns Asset Backed Securities Trust, Floating Rate Note, 10/25/34 932,249 1,258,743 0.37 CCC/B1 Bear Stearns Asset Backed Securities Trust, Floating Rate Note, 10/25/36 1,193,561 3,976,356 0.92 A/Caa1 Bear Stearns Asset Backed Securities Trust, Floating Rate Note, 3/25/35 3,129,659 The accompanying notes are an integral part of these financial statements. 22 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------ Thrifts & Mortgage Finance -- (continued) 675,000 NR/NR CarNow Auto Receivables Trust, 6.9%, 11/15/16 (144A) $ 674,993 677,157 0.36 BB/Ba3 Carrington Mortgage Loan Trust, Floating Rate Note, 2/25/37 661,847 8,090,000 0.44 CCC/Caa2 Carrington Mortgage Loan Trust, Floating Rate Note, 2/25/37 4,731,436 559,086 0.34 CCC/Ba3 Carrington Mortgage Loan Trust, Floating Rate Note, 6/25/37 506,810 2,925,613 0.30 CCC/Caa1 Citigroup Mortgage Loan Trust, Inc., Floating Rate Note, 7/25/45 2,061,106 1,700,000 1.21 BB/Caa1 Countrywide Asset-Backed Certificates, Floating Rate Note, 11/25/34 893,500 10,266,931 0.69 CCC/NR Countrywide Asset-Backed Certificates, Floating Rate Note, 3/25/47 (144A) 4,144,688 2,077,845 0.42 BBB-/B2 Countrywide Asset-Backed Certificates, Floating Rate Note, 6/25/36 1,711,087 813,832 0.94 AAA/Caa2 FBR Securitization Trust, Floating Rate Note, 10/25/35 455,922 965,744 0.37 B-/B3 GSAMP Trust, Floating Rate Note, 1/25/37 859,932 4,000,000 BBB/NR Leaf II Receivables Funding LLC, 5.5%, 2/20/22 (144A) 3,710,000 5,805,582 0.59 CC/Ca Lehman XS Trust, Floating Rate Note, 12/25/35 1,692,327 2,650,374 0.36 CCC/Caa3 Lehman XS Trust, Floating Rate Note, 8/25/36 1,385,425 1,173,549 0.40 BB+/Ba1 Residential Asset Mortgage Products, Inc., Floating Rate Note, 8/25/36 988,118 1,500,000 6.55 CCC/B3 Security National Mortgage Loan Trust, Floating Rate Note, 4/25/37 (144A) 1,305,094 -------------- $ 34,858,287 -------------- Total Banks $ 34,858,287 ------------------------------------------------------------------------------------------------------ DIVERSIFIED FINANCIALS -- 0.7% Other Diversified Financial Services -- 0.4% 9,145,407 0.72 B-/Caa1 Aircraft Finance Trust, Floating Rate Note, 5/15/24 (144A) $ 4,298,341 1,517,119 1.04 B/B1 Ellington Loan Acquisition Trust, Floating Rate Note, 5/27/37 (144A) 1,397,042 4,740,591 0.35 CCC/B2 Home Equity Asset Trust, Floating Rate Note, 3/25/37 3,872,267 662,907 BB/NR Sierra Receivables Funding Co., LLC, 9.31%, 7/20/28 (144A) 662,790 -------------- $ 10,230,440 ------------------------------------------------------------------------------------------------------ The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 23 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ----------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ----------------------------------------------------------------------------------------------------------- Specialized Finance -- 0.3% 11,634,489 0.63 CCC+/Caa2 Lease Investment Flight Trust, Floating Rate Note, 7/15/31 $ 7,504,245 1,013,374 0.67 CCC+/Caa2 Lease Investment Flight Trust, Floating Rate Note, 7/15/31 653,626 -------------- $ 8,157,871 -------------- Total Diversified Financials $ 18,388,311 ----------------------------------------------------------------------------------------------------------- TOTAL ASSET BACKED SECURITIES (Cost $57,503,182) $ 53,824,510 ----------------------------------------------------------------------------------------------------------- COLLATERALIZED MORTGAGE OBLIGATIONS -- 1.3% BANKS -- 0.5% Thrifts & Mortgage Finance -- 0.5% 14,765,841 2.93 AAA/Ba3 Bayview Commercial Asset Trust, Floating Rate Note, 4/25/36 (144A) $ 321,009 1,000,000 6.85 CCC+/NR Commercial Mortgage Pass Through Certificates, Floating Rate Note, 8/15/33 (144A) 636,664 797,400 CC/Caa1 Countrywide Alternative Loan Trust, 5.25%, 8/25/35 797,589 501,182 5.67 NR/NR First Horizon Asset Securities, Inc., Floating Rate Note, 11/25/34 439,018 650,192 NR/B3 GSR Mortgage Loan Trust, 5.5%, 8/25/21 621,050 809,976 5.74 BB-/NR GSR Mortgage Loan Trust, Floating Rate Note, 2/25/34 689,877 258,820 1.00 AAA/Baa3 Impac CMB Trust, Floating Rate Note, 1/25/35 195,245 1,658,539 2.86 NR/B1 JP Morgan Mortgage Trust, Floating Rate Note, 10/25/35 1,339,288 611,657 2.59 CCC/B1 JP Morgan Mortgage Trust, Floating Rate Note, 11/25/35 601,922 2,925,402 4.71 BBB/Caa3 JP Morgan Mortgage Trust, Floating Rate Note, 2/25/35 2,434,327 4,315,000 BB/B1 Timberstar Trust, 7.53%, 10/15/36 (144A) 3,987,004 2,261,835 5.18 CCC/NR WaMu Mortgage Pass Through Certificates, Floating Rate Note, 12/25/36 1,825,391 -------------- $ 13,888,384 -------------- Total Banks $ 13,888,384 ----------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.3% Other Diversified Financial Services -- 0.2% 1,042,121 NR/B3 Credit Suisse Mortgage Capital Certificates, 5.0%, 4/25/37 $ 961,837 The accompanying notes are an integral part of these financial statements. 24 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------ Other Diversified Financial Services -- (continued) 2,500,000 0.94 BBB+/Baa2 Morgan Stanley Capital I, Floating Rate Note, 12/15/20 (144A) $ 2,279,875 700,000 8.11 NR/NR Vericrest Opportunity Loan Transferee, Floating Rate Note, 3/25/49 (144A) 700,875 -------------- $ 3,942,587 ------------------------------------------------------------------------------------------------------ Investment Banking & Brokerage -- 0.1% 3,450,000 6.94 BBB-/NR Bear Stearns Commercial Mortgage Securities, Floating Rate Note, 2/15/35 (144A) $ 3,408,980 -------------- Total Diversified Financials $ 7,351,567 ------------------------------------------------------------------------------------------------------ REAL ESTATE -- 0.4% Mortgage REIT's -- 0.4% 1,133,015 2.73 AAA/Caa1 American Home Mortgage Investment Trust, Floating Rate Note, 6/25/45 $ 908,892 9,000,000 7.08 CCC-/NR Credit Suisse First Boston Mortgage Securities Corp., Floating Rate Note, 12/15/35 (144A) 7,943,400 2,456,421 5.50 CC/Caa1 Deutsche ALT-A Securities Inc Alternate Loan Trust, Floating Rate Note, 11/25/35 2,104,821 -------------- $ 10,957,113 -------------- Total Real Estate $ 10,957,113 ------------------------------------------------------------------------------------------------------ GOVERNMENT -- 0.1% 22,711,897 1.47 NR/Aaa Government National Mortgage Association, Floating Rate Note, 10/16/52 $ 1,722,516 -------------- Total Government $ 1,722,516 ------------------------------------------------------------------------------------------------------ TOTAL COLLATERALIZED MORTGAGE OBLIGATIONS (Cost $36,278,349) $ 33,919,580 ------------------------------------------------------------------------------------------------------ CORPORATE BONDS -- 72.2% ENERGY -- 11.0% Oil & Gas Drilling -- 1.8% 3,600,000 NR/NR Deep Drilling 1 Pte, Ltd., 12.0%, 12/21/15 $ 3,438,323 1,250,000 B-/Caa1 Hercules Offshore, Inc., 10.5%, 10/15/17 (144A) 1,306,250 8,900,000 CCC+/Caa2 Ocean Rig UDW, Inc., 9.5%, 4/27/16 8,900,000 13,445,000 B-/B3 Offshore Group Investments, Ltd., 11.5%, 8/1/15 14,705,469 4,510,000 B-/B3 Offshore Group Investments, Ltd., 11.5%, 8/1/15 (144A) 4,932,812 6,395,000 B+/NR Pioneer Drilling Co., 9.875%, 3/15/18 6,746,725 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 25 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value -------------------------------------------------------------------------------------------------------- Oil & Gas Drilling -- (continued) 7,990,000 BB-/B2 Trinidad Drilling, Ltd., 7.875%, 1/15/19 (144A) $ 8,509,350 -------------- $ 48,538,929 -------------------------------------------------------------------------------------------------------- Oil & Gas Equipment & Services -- 1.2% 17,815,000 B-/B3 Expro Finance Luxembourg SCA, 8.5%, 12/15/16 (144A) $ 17,280,550 1,825,000 BB/Ba3 Exterran Holdings, Inc., 7.25%, 12/1/18 1,752,000 2,275,000 CCC+/Caa2 Green Field Energy Services, Inc., 13.0%, 11/15/16 (144A) 2,229,500 910,944 NR/NR Nexus 1 Pte, Ltd., 10.5%, 4/9/22 (144A) 911 NOK 32,463,000 12.98 NR/NR Sevan Marine ASA, Floating Rate Note, 10/24/12 (144A) 3,403,960 NOK 23,000,000 NR/NR Transocean Drilling Norway AS, 11.0%, 2/24/16 4,341,064 NOK 16,000,000 9.67 NR/NR Transocean Drilling Norway AS, Floating Rate Note, 2/24/16 2,977,928 -------------- $ 31,985,913 -------------------------------------------------------------------------------------------------------- Integrated Oil & Gas -- 0.2% CAD 5,070,000 BB-/Caa2 Connacher Oil and Gas, Ltd., 8.75%, 8/1/18 (144A) $ 5,109,282 -------------------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 4.7% 7,485,000 B/B3 Carrizo Oil & Gas, Inc., 8.625%, 10/15/18 $ 7,934,100 7,990,000 B-/B3 Chaparral Energy, Inc., 8.25%, 9/1/21 8,509,350 7,920,000 BB/Ba3 Chesapeake Energy Corp., 6.775%, 3/15/19 7,702,200 3,235,000 BB+/Ba1 Cimarex Energy Co., 5.875%, 5/1/22 3,348,225 4,740,000 B/B2 Comstock Resources, Inc., 7.75%, 4/1/19 4,408,200 1,120,000 BB+/B1 Concho Resources, Inc., 6.5%, 1/15/22 1,181,600 5,035,000 CCC+/Caa1 Goodrich Petroleum Corp., 8.875%, 3/15/19 4,871,362 5,215,000 B-/Caa1 Kodiak Oil & Gas Corp., 8.125%, 12/1/19 (144A) 5,527,900 13,600,000 B/B2 Linn Energy LLC, 6.25%, 11/1/19 (144A) 13,396,000 12,850,000 B+/NR MIE Holdings Corp., 9.75%, 5/12/16 (144A) 12,801,170 NOK 12,000,000 NR/NR Norwegian Energy Co., AS, 10.25%, 4/27/16 2,099,292 NOK 45,000,000 NR/NR Norwegian Energy Co., AS, 12.9%, 11/20/14 7,838,215 2,840,000 B/Caa1 Oasis Petroleum, Inc., 6.5%, 11/1/21 2,896,800 3,065,000 CCC+/Caa1 PetroBakken Energy, Ltd., 8.625%, 2/1/20 (144A) 3,195,262 3,775,000 BBB+/Baa3 Petrohawk Energy Corp., 7.25%, 8/15/18 4,303,500 The accompanying notes are an integral part of these financial statements. 26 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------ Oil & Gas Exploration & Production -- (continued) 6,460,000 B/Caa1 Petroquest Energy, Inc., 10.0%, 9/1/17 $ 6,669,950 2,580,000 B-/B3 Quicksilver Resources, Inc., 7.125%, 4/1/16 2,360,700 3,370,000 B/B2 Quicksilver Resources, Inc., 9.125%, 8/15/19 3,252,050 4,370,000 B/B1 Samson Investment Co., 9.75%, 2/15/20 (144A) 4,561,188 8,605,000 B/B3 SandRidge Energy, Inc., 8.0%, 6/1/18 (144A) 8,927,688 3,080,000 BB/B1 SM Energy Co., 6.5%, 11/15/21 3,249,400 2,919,000 B/Caa1 Stone Energy Corp., 8.625%, 2/1/17 3,072,248 2,275,000 B-/Caa1 Venoco, Inc., 8.875%, 2/15/19 2,132,812 -------------- $ 124,239,212 ------------------------------------------------------------------------------------------------------ Oil & Gas Refining & Marketing -- 0.0% 765,000 BB+/Ba1 Tesoro Corp., 9.75%, 6/1/19 $ 870,188 ------------------------------------------------------------------------------------------------------ Oil & Gas Storage & Transportation -- 0.8% 5,030,000 7.00 BB+/Baa3 Enterprise Products Operating LLC, Floating Rate Note, 6/1/67 $ 5,042,575 13,700,000 NR/B2 Everest Acquisition LLC, 9.375%, 5/1/20 (144A) 14,590,500 950,000 3.56 BB/Ba1 Southern Union Co., Floating Rate Note, 11/1/66 801,562 -------------- $ 20,434,637 ------------------------------------------------------------------------------------------------------ Coal & Consumable Fuels -- 2.3% 815,000 BB/Ba3 Alpha Natural Resources, Inc., 6.0%, 6/1/19 $ 762,025 5,575,000 B+/B1 Arch Coal, Inc., 7.25%, 6/15/21 (144A) 4,975,688 15,063,000 BB-/B1 Berau Capital Resources Pte, Ltd., 12.5%, 7/8/15 (144A) 16,832,902 3,750,000 BB-/B1 Berau Coal Energy Tbk PT, 7.25%, 3/13/17 (144A) 3,740,625 12,200,000 BB/Ba3 Bumi Capital Pte, Ltd., 12.0%, 11/10/16 (144A) 13,420,000 11,485,000 B/Caa1 Foresight Energy LLC, 9.625%, 8/15/17 (144A) 11,886,975 4,435,000 B/B2 James River Coal Co., 7.875%, 4/1/19 2,882,750 2,706,000 B/B3 Murray Energy Corp., 10.25%, 10/15/15 (144A) 2,570,700 2,070,000 B/B2 Penn Virginia Resource Partners LP, 8.25%, 4/15/18 2,126,925 -------------- $ 59,198,590 -------------- Total Energy $ 290,376,751 ------------------------------------------------------------------------------------------------------ The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 27 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- MATERIALS -- 10.5% Commodity Chemicals -- 1.4% 11,343,000 NR/WR Basell Finance Co., BV, 8.1%, 3/15/27 (144A) $ 13,441,455 9,350,000 CCC+/B3 Hexion US Finance Corp., 8.875%, 2/1/18 9,794,125 2,259,000 BB/Ba2 NOVA Chemicals Corp., 7.875%, 9/15/25 2,281,590 11,320,000 BB/B1 Rain CII Carbon LLC, 8.0%, 12/1/18 (144A) 11,857,700 -------------- $ 37,374,870 ------------------------------------------------------------------------------------------------------- Diversified Chemicals -- 1.8% EURO 10,935,000 CCC+/Caa1 Ineos Group Holdings, Ltd., 7.875%, 2/15/16 (144A) $ 13,316,184 800,000 CCC+/Caa1 Ineos Group Holdings, Ltd., 8.5%, 2/15/16 (144A) 782,000 17,540,000 BB+/Ba2 LyondellBasell Industries NV, 5.0%, 4/15/19 (144A) 18,110,050 EURO 9,025,000 NR/Caa1 Momentive Performance Materials, Inc., 9.5%, 1/15/21 9,497,023 EURO 4,390,000 B+/B2 Styrolution Group GmbH, 7.625%, 5/15/16 (144A) 5,258,795 -------------- $ 46,964,052 ------------------------------------------------------------------------------------------------------- Construction Materials -- 0.9% 12,050,000 CC/Caa3 AGY Holding Corp., 11.0%, 11/15/14 $ 4,338,000 4,275,000 B-/NR Cemex Espana Luxembourg, 9.875%, 4/30/19 (144A) 3,997,125 9,406,000 B-/NR Cemex Finance LLC, 9.5%, 12/14/16 (144A) 9,264,910 3,750,000 B-/NR Cemex SAB de CV, 9.0%, 1/11/18 (144A) 3,506,250 2,735,000 B-/Caa2 Texas Industries, Inc., 9.25%, 8/15/20 2,666,625 -------------- $ 23,772,910 ------------------------------------------------------------------------------------------------------- Metal & Glass Containers -- 1.1% 4,105,000 B-/B3 AEP Industries, Inc., 8.25%, 4/15/19 $ 4,310,250 9,059,942 B-/Caa1 ARD Finance SA, 11.125%, 6/1/18 (144A) (PIK) 9,082,592 5,000,000 BB-/B3 Ardagh Packaging Finance Plc, 9.125%, 10/15/20 (144A) 5,412,500 EURO 2,100,000 B-/B3 Ardagh Packaging Finance Plc, 9.25%, 10/15/20 (144A) 2,863,055 7,904,423 CCC+/Caa1 BWAY Parent Co, Inc., 10.125%, 11/1/15 (PIK) 8,062,511 -------------- $ 29,730,908 ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 28 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- Paper Packaging -- 1.1% 15,426,044 NR/NR Bio Pappel SAB de CV, 7.0%, 8/27/16 (Step) $ 11,878,054 2,200,771 NR/NR Bio Pappel SAB de CV, 7.0%, 8/27/16 (Step) (144A) 1,694,594 EURO 6,800,000 B/B2 Nordenia International AG, 9.75%, 7/15/17 (144A) 9,675,881 4,430,000 B/B3 Packaging Dynamics Corp., 8.75%, 2/1/16 (144A) 4,706,875 -------------- $ 27,955,404 ------------------------------------------------------------------------------------------------------- Aluminum -- 0.0% 306 B-/B3 Noranda Aluminum Acquisition Corp., 4.659%, 5/15/15 (PIK) $ 295 ------------------------------------------------------------------------------------------------------- Diversified Metals & Mining -- 1.4% 10,175,000 CCC+/Caa1 Midwest Vanadium Pty, Ltd., 11.5%, 2/15/18 (144A) $ 6,817,250 11,725,000 CCC+/Caa1 Mirabela Nickel, Ltd., 8.75%, 4/15/18 (144A) 8,617,875 4,750,000 NR/B1 Mongolian Mining Corp., 8.875%, 3/29/17 (144A) 4,749,348 12,910,000 BB/Ba3 Vedanta Resources Plc, 8.25%, 6/7/21 (144A) 12,264,500 2,000,000 BB/Ba3 Vedanta Resources Plc, 9.5%, 7/18/18 (144A) 2,055,000 1,585,000 BBB-/Baa3 Volcan Cia Minera SAA, 5.375%, 2/2/22 (144A) 1,646,022 -------------- $ 36,149,995 ------------------------------------------------------------------------------------------------------- Steel -- 2.4% 12,950,000 CCC/Caa2 Algoma Acquisition Corp., 9.875%, 6/15/15 (144A) $ 11,914,000 5,300,000 NR/Ba1 China Oriental Group Co., Ltd., 8.0%, 8/18/15 (144A) 4,836,250 11,975,000 B-/B3 Ferrexpo Finance Plc, 7.875%, 4/7/16 (144A) 11,151,719 6,000,000 BB+/Ba3 Fosun International, Ltd., 7.5%, 5/12/16 (144A) 5,610,000 4,340,000 B/B3 JMC Steel Group, 8.25%, 3/15/18 (144A) 4,491,900 7,620,000 NR/B2 Metinvest BV, 10.25%, 5/20/15 (144A) 7,562,850 11,550,000 NR/B2 Metinvest BV, 8.75%, 2/14/18 (144A) 10,683,750 4,890,000 CCC+/Caa1 Ryerson, Inc., 12.0%, 11/1/15 5,097,825 EURO 2,505,000 CCC/Caa2 Zlomrex International Finance SA, 8.5%, 2/1/14 (144A) 2,752,067 -------------- $ 64,100,361 ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 29 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- Paper Products -- 0.4% 14,215,000 B+/Ba3 Grupo Papelero Scribe SA, 8.875%, 4/7/20 (144A) $ 12,011,675 -------------- Total Materials $ 278,060,470 ------------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 6.2% Aerospace & Defense -- 0.6% 19,238,000 B-/B2 DynCorp International, Inc., 10.375%, 7/1/17 $ 16,496,585 ------------------------------------------------------------------------------------------------------- Building Products -- 0.8% 3,905,000 BB+/Ba3 Building Materials Corp., of America, 6.75%, 5/1/21 (144A) $ 4,066,081 16,000,000 NR/Ba2 China Liansu Group Holdings, Ltd., 7.875%, 5/13/16 (144A) 15,160,000 3,739,472 NR/NR Industrias Unidas SA de CV, 11.5%, 11/15/16 2,767,209 -------------- $ 21,993,290 ------------------------------------------------------------------------------------------------------- Construction & Engineering -- 0.9% 6,900,000 B+/Ba3 Abengoa Finance SAU, 8.875%, 11/1/17 (144A) $ 6,589,500 2,980,000 BB-/Ba3 Dycom Investments, Inc., 7.125%, 1/15/21 3,069,400 7,900,000 B+/B1 Empresas ICA SAB de CV, 8.9%, 2/4/21 (144A) 7,821,000 9,175,000 CCC/Caa3 New Enterprise Stone & Lime Co., Inc., 11.0%, 9/1/18 7,523,500 -------------- $ 25,003,400 ------------------------------------------------------------------------------------------------------- Electrical Components & Equipment -- 0.5% 10,825,000 B/B3 Coleman Cable, Inc., 9.0%, 2/15/18 $ 11,420,375 1,171,000 B/B1 WESCO Distribution, Inc., 7.5%, 10/15/17 1,198,811 1,540,000 B/B2 WireCo WorldGroup, Inc., 9.5%, 5/15/17 1,590,050 -------------- $ 14,209,236 ------------------------------------------------------------------------------------------------------- Industrial Conglomerates -- 0.6% 2,980,000 B/B2 JB Poindexter & Co., Inc., 9.0%, 4/1/22 (144A) $ 3,032,150 EURO 1,800,000 BB-/Ba3 Mark IV Europe Lux SCA, 8.875%, 12/15/17 (144A) 2,454,047 1,200,000 CCC+/B3 Park-Ohio Industries, Inc., 8.125%, 4/1/21 1,236,000 7,800,000 BBB/Baa3 Votorantim Cimentos SA, 7.25%, 4/5/41 (144A) 7,936,500 -------------- $ 14,658,697 ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 30 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 --------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value --------------------------------------------------------------------------------------------------------- Construction & Farm Machinery & Heavy Trucks -- 0.9% 6,780,000 B/B2 Commercial Vehicle Group, Inc., 7.875%, 4/15/19 $ 6,780,000 6,225,000 BB/Ba3 Lonking Holdings, Ltd., 8.5%, 6/3/16 (144A) 5,851,500 4,400,000 NR/NR OSX 3 Leasing BV, 9.25%, 3/20/15 (144A) 4,559,280 2,280,000 BB-/B2 Terex Corp., 6.5%, 4/1/20 2,342,700 2,740,000 B+/B1 Titan International, Inc., 7.875%, 10/1/17 2,904,400 -------------- $ 22,437,880 --------------------------------------------------------------------------------------------------------- Industrial Machinery -- 1.1% 5,322,000 NR/WR Indalex Holding Corp., 11.5%, 2/1/14 (c) $ 19,958 5,080,000 B/Caa1 Liberty Tire Recycling, 11.0%, 10/1/16 (144A) 4,787,900 7,237,000 CCC+/Caa2 Mueller Water Products, Inc., 7.375%, 6/1/17 7,255,092 1,725,000 B/B1 Schaeffler Finance BV, 7.75%, 2/15/17 (144A) 1,828,500 1,465,000 B/B1 Schaeffler Finance BV, 8.5%, 2/15/19 (144A) 1,571,212 14,600,000 B+/NR WPE International Cooperatief UA, 10.375%, 9/30/20 (144A) 12,848,000 -------------- $ 28,310,662 --------------------------------------------------------------------------------------------------------- Trading Companies & Distributors -- 0.8% 9,840,000 B-/B3 INTCOMEX, Inc., 13.25%, 12/15/14 $ 9,987,600 2,735,000 B/B3 UR Financing Escrow Corp., 7.375%, 5/15/20 (144A) 2,871,750 6,820,000 B/B3 UR Financing Escrow Corp., 7.625%, 4/15/22 (144A) 7,212,150 -------------- $ 20,071,500 -------------- Total Capital Goods $ 163,181,250 --------------------------------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES -- 0.4% Environmental & Facilities Services -- 0.1% 6,510,000 NR/WR Old AII, Inc., 10.0%, 12/15/16 (c) $ 651 EURO 3,022,531 CCC+/Caa2 The New Reclamation Group Pty, Ltd., 8.125%, 2/1/13 (144A) 2,880,556 -------------- $ 2,881,207 --------------------------------------------------------------------------------------------------------- Diversified Support Services -- 0.3% 6,365,000 B/B3 ADS Tactical, Inc., 11.0%, 4/1/18 (144A) $ 6,683,250 -------------- Total Commercial Services & Supplies $ 9,564,457 --------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 31 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ----------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ----------------------------------------------------------------------------------------------------- TRANSPORTATION -- 2.2% Air Freight & Logistics -- 0.6% 12,061,000 B-/Caa1 CEVA Group Plc, 11.5%, 4/1/18 (144A) $ 11,880,085 2,445,000 B-/B3 CEVA Group Plc, 11.625%, 10/1/16 (144A) 2,597,812 -------------- $ 14,477,897 ----------------------------------------------------------------------------------------------------- Airlines -- 0.7% 1,635,019 BB/Ba2 Continental Airlines 1998-1 Class B Pass Through Trust, 6.748%, 3/15/17 $ 1,618,669 2,125,000 BBB-/Ba2 Continental Airlines 2012-1 Class B Pass Thru Trusts, 6.25%, 4/11/20 2,151,562 7,363,000 B/NR Gol Finance, 9.25%, 7/20/20 (144A) 6,589,885 8,250,000 B/NR TAM Capital 3, Inc., 8.375%, 6/3/21 (144A) 8,580,000 -------------- $ 18,940,116 ----------------------------------------------------------------------------------------------------- Marine -- 0.0% 1,345,000 B+/B3 Navios South American Logistics, Inc., 9.25%, 4/15/19 $ 1,230,675 ----------------------------------------------------------------------------------------------------- Railroads -- 0.1% 2,335,962 CCC/Caa3 Florida East Coast Holdings Corp., 10.5%, 8/1/17 (PIK) $ 1,921,329 ----------------------------------------------------------------------------------------------------- Trucking -- 0.5% 7,656,551 NR/Ba2 Inversiones Alsacia SA, 8.0%, 8/18/18 (144A) $ 7,517,049 6,125,000 B/B3 syncreon Global Ireland, Ltd., 9.5%, 5/1/18 (144A) 6,079,062 -------------- $ 13,596,111 ----------------------------------------------------------------------------------------------------- Airport Services -- 0.3% 4,536,250 B/B2 Aeropuertos Argentina 2000 SA, 10.75%, 12/1/20 (144A) $ 4,513,569 3,900,000 B/B2 Aguila 3 SA, 7.875%, 1/31/18 (144A) 4,085,250 -------------- $ 8,598,819 -------------- Total Transportation $ 58,764,947 ----------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 2.6% Auto Parts & Equipment -- 1.4% 4,800,000 B+/B2 Pittsburgh Glass Works LLC, 8.5%, 4/15/16 (144A) $ 4,728,000 4,365,000 CCC/Caa1 Stanadyne Corp., 10.0%, 8/15/14 3,655,688 16,550,000 CCC-/Caa3 Stanadyne Holdings, Inc., 12.0%, 2/15/15 (Step) 12,743,500 11,854,000 B+/B1 Tower Automotive Holdings USA LLC, 10.625%, 9/1/17 (144A) 12,728,232 4,260,000 CCC+/B3 UCI International, Inc., 8.625%, 2/15/19 4,366,500 -------------- $ 38,221,920 ----------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 32 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 -------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value -------------------------------------------------------------------------------------------------------- Tires & Rubber -- 0.1% 2,810,000 B+/B1 The Goodyear Tire & Rubber Co., 7.0%, 5/15/22 $ 2,788,925 -------------------------------------------------------------------------------------------------------- Automobile Manufacturers -- 1.1% 4,000,000 NR/Ba1 Automotores Gildemeister SA, 8.25%, 5/24/21 (144A) $ 4,224,000 11,605,000 B/B2 Chrysler Group LLC, 8.0%, 6/15/19 12,011,175 7,865,000 B/B2 Chrysler Group LLC, 8.25%, 6/15/21 8,140,275 5,000,000 B+/B1 Hyva Global BV, 8.625%, 3/24/16 (144A) 4,212,500 -------------- $ 28,587,950 -------------- Total Automobiles & Components $ 69,598,795 -------------------------------------------------------------------------------------------------------- CONSUMER DURABLES & APPAREL -- 3.0% Homebuilding -- 1.2% 1,600,000 CCC/Caa3 Beazer Homes USA, Inc., 9.125%, 5/15/19 $ 1,340,000 8,750,000 CCC/Caa3 Beazer Homes USA, Inc., 9.125%, 6/15/18 7,437,500 2,050,000 BB-/NR Corp GEO SAB de CV, 8.875%, 3/27/22 (144A) 2,080,750 10,272,000 NR/Ba3 Desarrolladora Homex SAB de CV, 9.5%, 12/11/19 (144A) 10,605,840 3,805,000 B+/B1 Meritage Homes Corp., 7.0%, 4/1/22 (144A) 3,862,075 7,500,000 NR/Ba3 Urbi Desarrollos Urbanos SAB de CV, 9.75%, 2/3/22 (144A) 7,800,000 -------------- $ 33,126,165 -------------------------------------------------------------------------------------------------------- Housewares & Specialties -- 1.5% 2,400,000 B-/Caa1 Reynolds Group Issuer, Inc., 8.5%, 2/15/21 (144A) $ 2,316,000 3,235,000 B-/Caa1 Reynolds Group Issuer, Inc., 9.0%, 4/15/19 (144A) 3,251,175 7,490,000 B-/Caa1 Reynolds Group Issuer, Inc., 9.25%, 5/15/18 (144A) 7,564,900 7,675,000 B-/Caa1 Reynolds Group Issuer, Inc., 9.875%, 8/15/19 (144A) 8,001,188 11,165,000 CCC+/B3 Yankee Candle Co., Inc., 9.75%, 2/15/17 11,667,425 5,775,000 CCC+/Caa1 YCC Holdings LLC, 10.25%, 2/15/16 (PIK) 5,904,938 -------------- $ 38,705,626 -------------------------------------------------------------------------------------------------------- Leisure Products -- 0.3% EURO 4,700,000 CCC/Caa2 Heckler & Koch GmbH, 9.5%, 5/15/18 (144A) $ 4,043,751 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 33 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value -------------------------------------------------------------------------------------------------------- Leisure Products -- (continued) 5,000,000 B/B2 Icon Health & Fitness, Inc., 11.875%, 10/15/16 (144A) $ 4,312,500 -------------- $ 8,356,251 -------------- Total Consumer Durables & Apparel $ 80,188,042 -------------------------------------------------------------------------------------------------------- CONSUMER SERVICES -- 1.7% Casinos & Gaming -- 0.8% 10,750,000 NR/WR Buffalo Thunder Development Authority, 9.375%, 12/15/14 (144A) (c) $ 4,004,375 4,395,000 B/B2 Codere Finance Luxembourg SA, 9.25%, 2/15/19 (144A) 4,048,894 2,052,000 B-/NR Little Traverse Bay Bands of Odawa Indians, 9.0%, 8/31/20 (144A) 1,867,320 EURO 1,000,000 8.25 BB/Ba2 Lottomatica S.p.A., Floating Rate Note, 3/31/66 (144A) 1,181,728 5,965,000 NR/WR Mashantucket Western Pequot Tribe, 8.5%, 11/15/15 (144A) (c) 544,306 EURO 6,335,000 B-/B3 Peermont Global Pty, Ltd., 7.75%, 4/30/14 (144A) 7,798,350 1,725,000 CCC/Caa2 Shingle Springs Tribal Gaming Authority, 9.375%, 6/15/15 (144A) 1,254,938 -------------- $ 20,699,911 -------------------------------------------------------------------------------------------------------- Hotels, Resorts & Cruise Lines -- 0.2% 4,977,000 CCC+/B3 Grupo Posadas SAB de CV, 9.25%, 1/15/15 (144A) $ 4,404,645 -------------------------------------------------------------------------------------------------------- Restaurants -- 0.5% BRL 4,250,000 NR/Ba2 Arcos Dorados Holdings, Inc., 10.25%, 7/13/16 (144A) $ 2,293,286 15,915,000 CCC+/Caa1 Burger King Capital Holdings LLC, 0.0%, 4/15/19 (Step) (144A) 12,214,762 -------------- $ 14,508,048 -------------------------------------------------------------------------------------------------------- Education Services -- 0.2% 4,225,000 B-/B2 Cambium Learning Group, Inc., 9.75%, 2/15/17 $ 4,108,812 -------------- Total Consumer Services $ 43,721,416 -------------------------------------------------------------------------------------------------------- MEDIA -- 2.7% Advertising -- 0.6% 3,800,000 NR/B3 Good Sam Enterprises LLC, 11.5%, 12/1/16 $ 3,966,250 5,549,000 B+/B2 MDC Partners, Inc., 11.0%, 11/1/16 6,034,538 8,700,000 B-/Caa2 Sitel LLC, 11.5%, 4/1/18 6,090,000 -------------- $ 16,090,788 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 34 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 -------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value -------------------------------------------------------------------------------------------------------- Broadcasting -- 1.7% 2,968,235 CCC+/Caa3 Intelsat Luxembourg SA, 11.5%, 2/4/17 $ 3,094,385 15,840,000 CCC+/Caa3 Intelsat Luxembourg SA, 11.5%, 2/4/17 (144A) (PIK) 16,354,800 4,300,000 B/B1 Nara Cable Funding, Ltd., 8.875%, 12/1/18 (144A) 3,934,500 EURO 10,950,000 B/B1 Nara Cable Funding, Ltd., 8.875%, 12/1/18 (144A) 13,044,571 EURO 1,925,000 CCC+/Caa1 Ono Finance II Plc, 11.125%, 7/15/19 (144A) 2,114,862 4,245,000 B-/B3 Telesat Canada, 12.5%, 11/1/17 4,754,400 -------------- $ 43,297,518 -------------------------------------------------------------------------------------------------------- Movies & Entertainment -- 0.1% 2,125,000 B-/B3 Regal Entertainment Group, 9.125%, 8/15/18 $ 2,353,438 -------------------------------------------------------------------------------------------------------- Publishing -- 0.3% 6,135,000 B-/Caa1 Interactive Data Corp., 10.25%, 8/1/18 $ 6,932,550 1,675,000 B/B3 MPL 2 Acquisition Canco, Inc., 9.875%, 8/15/18 (144A) 1,444,688 -------------- $ 8,377,238 -------------- Total Media $ 70,118,982 -------------------------------------------------------------------------------------------------------- RETAILING -- 0.7% Internet Retail -- 0.3% 7,415,000 B/B3 Ticketmaster Entertainment LLC, 10.75%, 8/1/16 $ 7,952,588 -------------------------------------------------------------------------------------------------------- Department Stores -- 0.4% 10,855,000 B/NR Grupo Famsa SAB de CV, 11.0%, 7/20/15 (144A) $ 11,452,025 -------------- Total Retailing $ 19,404,613 -------------------------------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 5.3% Distillers & Vintners -- 0.3% EURO 4,171,607 NR/NR Belvedere SA, 7.692%, 11/10/19 $ 1,270,002 EURO 320,792 7.69 NR/NR Belvedere SA, Floating Rate Note, 11/10/19 97,662 7,512,000 B-/B3 CEDC Finance Corp International, Inc., 9.125%, 12/1/16 (144A) 5,896,920 -------------- $ 7,264,584 -------------------------------------------------------------------------------------------------------- Soft Drinks -- 0.0% 1,590,000 BB/Ba2 Central American Bottling Corp., 6.75%, 2/9/22 (144A) $ 1,645,650 -------------------------------------------------------------------------------------------------------- Agricultural Products -- 0.2% 4,959,000 B+/B3 Southern States Cooperative, Inc., 11.25%, 5/15/15 (144A) $ 5,318,528 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 35 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ---------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------------- Packaged Foods & Meats -- 4.1% EURO 3,200,000 B/NR Agrokor DD, 9.875%, 5/1/19 (144A) $ 4,299,215 6,000,000 NR/B1 Bertin SA, 10.25%, 10/5/16 (144A) 6,480,000 12,305,000 NR/B2 Corp Pesquera Inca SAC, 9.0%, 2/10/17 (144A) 13,166,350 9,500,000 B/B3 FAGE Dairy Industry SA, 9.875%, 2/1/20 (144A) 8,882,500 2,969,595 NR/NR Independencia International, Ltd., 12.0%, 12/30/16 (144A) (c) 2,970 9,590,000 BB/B1 JBS Finance II, Ltd., 8.25%, 1/29/18 (144A) 9,382,856 1,250,000 BB/B1 JBS USA LLC, 8.25%, 2/1/20 (144A) 1,265,625 20,248,000 B+/B1 Marfrig Overseas, Ltd., 9.5%, 5/4/20 (144A) 17,666,380 3,783,000 B+/B1 Marfrig Overseas, Ltd., 9.625%, 11/16/16 (144A) 3,593,850 4,755,000 B+/B2 Minerva Luxembourg SA, 12.25%, 2/10/22 (144A) 5,064,075 19,900,000 B+/B2 Minerva Overseas II, Ltd., 10.875%, 11/15/19 (144A) 20,497,000 10,905,000 B-/Caa1 Pilgrim's Pride Corp., 7.875%, 12/15/18 11,068,575 7,158,000 NR/B1 SA Fabrica de Produtos Alimenticios Vigor, 9.25%, 2/23/17 (Step) (144A) 6,950,418 -------------- $ 108,319,814 ---------------------------------------------------------------------------------------------------------- Tobacco -- 0.7% 17,855,000 B/B2 Alliance One International, Inc., 10.0%, 7/15/16 $ 18,033,550 -------------- Total Food, Beverage & Tobacco $ 140,582,126 ---------------------------------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 2.5% Health Care Equipment -- 0.3% 8,850,000 CCC+/Caa2 Accellent, Inc., 10.0%, 11/1/17 $ 7,234,875 ---------------------------------------------------------------------------------------------------------- Health Care Supplies -- 0.4% 1,550,000 B/B2 Alere, Inc., 7.875%, 2/1/16 $ 1,613,938 5,750,000 B/Caa1 ConvaTec Healthcare E SA, 10.5%, 12/15/18 (144A) 5,879,375 3,200,000 B-/Caa1 Immucor, Inc., 11.125%, 8/15/19 3,588,000 -------------- $ 11,081,313 ---------------------------------------------------------------------------------------------------------- Health Care Services -- 1.0% 4,339,000 B-/Caa1 BioScrip, Inc., 10.25%, 10/1/15 $ 4,696,968 1,945,000 CCC+/B3 ExamWorks Group, Inc., 9.0%, 7/15/19 (144A) 1,974,175 4,253,000 CCC/Caa2 Gentiva Health Services, Inc., 11.5%, 9/1/18 3,965,922 5,975,000 CCC+/Caa1 Surgical Care Affiliates, Inc., 10.0%, 7/15/17 (144A) 6,034,750 The accompanying notes are an integral part of these financial statements. 36 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 -------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value -------------------------------------------------------------------------------------------------------- Health Care Services -- (continued) 10,447,362 CCC+/B3 Surgical Care Affiliates, Inc., 8.875%, 7/15/15 (144A) (PIK) $ 10,604,072 -------------- $ 27,275,887 -------------------------------------------------------------------------------------------------------- Health Care Facilities -- 0.6% 1,550,000 B-/B3 Kindred Healthcare, Inc., 8.25%, 6/1/19 $ 1,367,875 10,295,000 BB-/B1 Tenet Healthcare Corp., 6.25%, 11/1/18 (144A) 10,706,800 4,200,000 B-/B3 Vanguard Health Holding Co., II LLC, 7.75%, 2/1/19 4,215,750 172,000 CCC+/Caa1 Vanguard Health Systems, Inc., 2/1/16 113,950 -------------- $ 16,404,375 -------------------------------------------------------------------------------------------------------- Health Care Technology -- 0.2% 5,150,000 B-/B3 MedAssets, Inc., 8.0%, 11/15/18 $ 5,381,750 -------------- Total Health Care Equipment & Services $ 67,378,200 -------------------------------------------------------------------------------------------------------- PHARMACEUTICALS, BIOTECHNOLOGY & LIFE SCIENCES -- 0.4% Biotechnology -- 0.4% 10,302,000 B+/Caa2 Lantheus Medical Imaging, Inc., 9.75%, 5/15/17 $ 9,014,250 -------------------------------------------------------------------------------------------------------- Life Sciences Tools & Services -- 0.0% 924,776 9.50 B/Caa1 Catalent Pharma Solutions, Inc., Floating Rate Note, 4/15/15 $ 952,519 -------------- Total Pharmaceuticals, Biotechnology & Life Sciences $ 9,966,769 -------------------------------------------------------------------------------------------------------- BANKS -- 2.7% Diversified Banks -- 1.9% TRY 6,430,000 NR/NR Asian Development Bank, 14.0%, 8/7/12 $ 3,705,762 6,875,000 9.75 BB+/NR Banco de Credito del Peru Panama, Floating Rate Note, 11/6/69 (144A) 8,043,750 6,600,000 B/B2 Banco de Galicia y Buenos Aires, 8.75%, 5/4/18 (144A) 5,742,000 1,750,000 NR/Ba1 Banco do Estado do Rio Grande do Sul, 7.375%, 2/2/22 (144A) 1,838,902 2,140,000 NR/Ba1 Banco Industrial e Comercial SA, 8.5%, 4/27/20 (144A) 2,197,074 6,230,000 NR/Ba2 Banco Macro SA, 10.75%, 6/7/12 3,800,300 2,870,000 9.75 NR/B2 Banco Macro SA, Floating Rate Note, 12/18/36 2,095,100 3,880,000 NR/B2 Bank CenterCredit, 8.625%, 1/30/14 (144A) 3,957,600 5,100,000 NR/A2 BBVA Bancomer SA Texas, 6.5%, 3/10/21 (144A) 5,151,000 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 37 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ------------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------------- Diversified Banks -- (continued) EURO 2,600,000 NR/Aaa Cooperatieve Centrale Raiffeisen- Boerenleenbank BA Netherlands, 6.875%, 3/19/20 $ 3,314,155 1,400,000 B+/B2 Kazkommertsbank JSC, 8.0%, 11/3/15 (144A) 1,309,000 2,750,000 9.20 CCC-/Caa1 Kazkommertsbank JSC, Floating Rate Note, 11/29/49 (Perpetual) (144A) 1,567,500 80,000 BBB-/Ba1 Societe Generale SA, 8.75%, 10/29/49 (Perpetual) 72,400 7,400,000 NR/Baa1 VTB Bank OJSC Via VTB Capital SA, 6.0%, 4/12/17 (144A) 7,502,882 -------------- $ 50,297,425 ------------------------------------------------------------------------------------------------------------- Regional Banks -- 0.8% 3,165,000 8.50 NR/Ba3 Banco Internacional del Peru SAA, Floating Rate Note, 4/23/70 (144A) $ 3,373,574 2,700,000 BB+/Baa3 Capital One Capital V, 10.25%, 8/15/39 2,814,750 13,430,000 6.75 BBB/Baa3 PNC Financial Services Group, Inc., Floating Rate Note, 7/29/49 (Perpetual) 14,076,923 -------------- $ 20,265,247 -------------- Total Banks $ 70,562,672 ------------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 5.6% Other Diversified Financial Services -- 1.7% EURO 1,300,000 11.04 B-/NR ATLAS VI Capital, Ltd., Floating Rate Note, 4/7/14 (Cat Bond) (144A) $ 1,745,524 2,000,000 6.50 BB+/NR Caelus Re II, Ltd., Floating Rate Note, 5/24/13 (Cat Bond) (144A) 1,978,400 250,000 15.85 B+/NR Calabash Re, Ltd., Floating Rate Note, 6/15/12 (Cat Bond) (144A) 252,675 1,500,000 10.25 BB-/NR Compass Re, Ltd., Floating Rate Note, 1/8/15 (Cat Bond) (144A) 1,477,350 1,000,000 0.00 B+/NR Compass Re, Ltd., Floating Rate Note, 1/8/15 (Cat Bond) (144A) 973,500 400,000 0.00 BB/NR East Lane Re V, Ltd., Floating Rate Note, 3/16/16 (Cat Bond) (144A) 396,880 TRY 12,410,000 AAA/Aaa European Investment Bank, 0.0% 3/2/15 5,624,247 1,250,000 8.35 BB-/NR Ibis Re II, Ltd., Floating Rate Note, 2/5/15 (Cat Bond) (144A) 1,234,125 1,925,000 13.50 B-/NR Ibis Re II, Ltd., Floating Rate Note, 2/5/15 (Cat Bond) (144A) 1,889,772 1,135,000 10.72 BB/NR Ibis Re, Ltd., Floating Rate Note, 5/10/12 (Cat Bond) (144A) 1,133,978 1,500,000 6.20 BB-/NR Ibis Re, Ltd., Floating Rate Note, 5/3/13 (Cat Bond) (144A) 1,479,000 250,000 9.25 B/NR Ibis Re, Ltd., Floating Rate Note, 5/3/13 (Cat Bond) (144A) 246,300 The accompanying notes are an integral part of these financial statements. 38 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ----------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ----------------------------------------------------------------------------------------------------------- Other Diversified Financial Services -- (continued) TRY 800,000 A/Aa3 JPMorgan Chase & Co., 0.0% 10/4/17 (144A) $ 263,613 500,000 6.00 BB/NR Lodestone Re, Ltd., Floating Rate Note, 1/8/14 (Cat Bond) (144A) 484,500 5,000,000 7.25 BB/NR Lodestone Re, Ltd., Floating Rate Note, 1/8/14 (Cat Bond) (144A) 4,820,500 4,000,000 8.25 BB-/NR Lodestone Re, Ltd., Floating Rate Note, 5/17/13 (Cat Bond) (144A) 3,959,200 4,100,000 BB/NR Magnesita Finance, Ltd., 8.625%, 4/29/49 (Perpetual) (144A) 4,069,250 4,000,000 7.50 BB-/NR Queen Street II Capital, Ltd., Floating Rate Note, 4/9/14 (Cat Bond) (144A) 3,884,000 2,000,000 7.50 BB-/NR Queen Street IV Capital, Ltd., Floating Rate Note, 4/9/15 (Cat Bond) (144A) 1,903,200 900,000 0.00 NR/NR Queen Street V Re, Ltd., Floating Rate Note, 4/9/15 (Cat Bond) (144A) 884,610 250,000 0.00 B-/NR Residential Reinsurance 2010, Ltd., Floating Rate Note, 6/6/13 (Cat Bond) (144A) 250,775 1,750,000 7.25 NR/NR Residential Reinsurance 2010, Ltd., Floating Rate Note, 6/6/13 (Cat Bond) (144A) 1,715,175 1,500,000 0.00 BB/NR Residential Reinsurance 2010, Ltd., Floating Rate Note, 6/6/13 (Cat Bond) (144A) 1,484,850 3,450,000 12.00 B-/NR Residential Reinsurance 2011, Ltd., Floating Rate Note, 6/6/15 (Cat Bond) (144A) 3,330,975 -------------- $ 45,482,399 ----------------------------------------------------------------------------------------------------------- Multi-Sector Holdings -- 0.4% 5,075,000 B/B2 Constellation Enterprises LLC, 10.625%, 2/1/16 (144A) $ 5,100,375 4,020,000 AA/Aa3 IPIC GMTN, Ltd., 5.5%, 3/1/22 (144A) 4,200,900 -------------- $ 9,301,275 ----------------------------------------------------------------------------------------------------------- Specialized Finance -- 1.2% 7,675,000 BBB/Baa3 Cantor Fitzgerald LP, 7.875%, 10/15/19 (144A) $ 7,721,572 2,250,000 5.25 BB+/NR Kibou, Ltd., Floating Rate Note, 2/16/15 (Cat Bond) (144A) 2,245,950 10,460,000 NR/Ba3 Metalloinvest Finance, Ltd., 6.5%, 7/21/16 (144A) 10,407,700 9,315,000 B+/B2 National Money Mart Co., 10.375%, 12/15/16 10,456,088 -------------- $ 30,831,310 ----------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 39 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ----------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ----------------------------------------------------------------------------------------------------------- Consumer Finance -- 0.8% CNY 25,000,000 A/A2 Caterpillar Financial Services Corp., 1.35%, 7/12/13 $ 3,895,319 7,400,000 BB+/Ba1 Ford Motor Credit Co., LLC, 5.875%, 8/2/21 8,362,651 10,395,000 NR/NR Tarjeta Naranja SA, 9.0%, 1/28/17 (144A) 9,464,232 -------------- $ 21,722,202 ----------------------------------------------------------------------------------------------------------- Asset Management & Custody Banks -- 0.3% 8,150,000 NR/B1 Intercorp Retail Trust, 8.875%, 11/14/18 (144A) $ 8,720,500 ----------------------------------------------------------------------------------------------------------- Investment Banking & Brokerage -- 1.2% 20,515,000 5.79 BB+/Baa2 Goldman Sachs Capital II, Floating Rate Note, 6/1/43 $ 14,104,062 13,600,000 BBB/Baa2 Jefferies Group, Inc., 6.875%, 4/15/21 13,549,000 4,000,000 5.32 NR/NR UBS AG, Floating Rate Note, 1/15/14 (144A) 3,973,600 -------------- $ 31,626,662 -------------- Total Diversified Financials $ 147,684,348 ----------------------------------------------------------------------------------------------------------- INSURANCE -- 3.5% Insurance Brokers -- 1.6% 11,140,000 CCC/Caa2 Alliant Holdings I, Inc., 11.0%, 5/1/15 (144A) $ 11,627,375 11,241,000 CCC+/Caa2 HUB International Holdings, Inc., 10.25%, 6/15/15 (144A) 11,493,922 4,300,000 CCC+/Caa1 HUB International Holdings, Inc., 9.0%, 12/15/14 (144A) 4,375,250 GBP 4,840,000 B-/Caa1 Towergate Finance Plc, 10.5%, 2/15/19 (144A) 6,756,824 4,841,000 CCC/Caa2 USI Holdings Corp., 9.75%, 5/15/15 (144A) 4,895,461 4,532,000 4.38 CCC/Caa1 USI Holdings Corp., Floating Rate Note, 11/15/14 (144A) 4,243,085 -------------- $ 43,391,917 ----------------------------------------------------------------------------------------------------------- Multi-line Insurance -- 0.4% 3,570,000 7.00 BB/Baa3 Liberty Mutual Group, Inc., Floating Rate Note, 3/15/37 (144A) $ 3,213,000 5,170,000 10.75 BB/Baa3 Liberty Mutual Group, Inc., Floating Rate Note, 6/15/58 (144A) 7,031,200 -------------- $ 10,244,200 ----------------------------------------------------------------------------------------------------------- Property & Casualty Insurance -- 0.4% 8,535,000 7.51 BB+/Ba2 Sirius International Group, Ltd., Floating Rate Note, 5/29/49 (Perpetual) (144A) $ 8,147,596 The accompanying notes are an integral part of these financial statements. 40 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 --------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value --------------------------------------------------------------------------------------------------------- Property & Casualty Insurance -- (continued) 2,970,000 6.50 BBB-/Ba1 XL Group Plc, Floating Rate Note, 12/29/49 (Perpetual) $ 2,472,525 -------------- $ 10,620,121 --------------------------------------------------------------------------------------------------------- Reinsurance -- 1.1% 1,000,000 0.00 NR/NR Combine Re, Ltd., Floating Rate Note, 1/7/15 (Cat Bond) (144A) $ 996,800 750,000 0.00 NR/Ba3 Combine Re, Ltd., Floating Rate Note, 1/7/15 (Cat Bond) (144A) 747,600 2,700,000 5.00 BB+/NR Foundation Re III, Ltd., Floating Rate Note, 2/25/15 (Cat Bond) 2,626,290 2,500,000 5.75 BB/NR Foundation Re III, Ltd., Floating Rate Note, 2/3/14 (Cat Bond) (144A) 2,441,000 375,000 6.47 NR/B1 GlobeCat, Ltd., Floating Rate Note, 1/2/13 (Cat Bond) (144A) 371,812 2,600,000 9.72 NR/B3 GlobeCat, Ltd., Floating Rate Note, 1/2/13 (Cat Bond) (144A) 2,459,080 1,700,000 13.72 CCC+/NR Montana Re, Ltd., Floating Rate Note, 12/7/12 (Cat Bond) (144A) 1,608,200 750,000 11.50 B/NR MultiCat Mexico 2009, Ltd., Floating Rate Note, 10/19/12 (Cat Bond) (144A) 754,875 250,000 10.25 B/NR MultiCat Mexico 2009, Ltd., Floating Rate Note, 10/19/12 (Cat Bond) (144A) 247,450 250,000 10.25 B/NR MultiCat Mexico 2009, Ltd., Floating Rate Note, 10/19/12 (Cat Bond) (144A) 246,550 250,000 10.25 BB-/NR MultiCat Mexico 2009, Ltd., Floating Rate Note, 10/19/12 (Cat Bond) (144A) 247,350 2,500,000 12.00 B/NR Mystic Re, Ltd., Floating Rate Note, 3/12/15 (Cat Bond) (144A) 2,469,500 2,800,000 11.49 NR/NR Mythen, Ltd., Floating Rate Note, 5/7/15 (Cat Bond) (144A) 2,800,000 875,000 16.50 NR/NR Successor X, Ltd., Floating Rate Note, 1/27/15 (Cat Bond) (144A) 858,200 1,125,000 14.99 B-/NR Successor X, Ltd., Floating Rate Note, 1/7/14 (Cat Bond) (144A) 1,109,362 2,600,000 16.49 NR/NR Successor X, Ltd., Floating Rate Note, 1/7/14 (Cat Bond) (144A) 2,514,720 375,000 11.25 B-/NR Successor X, Ltd., Floating Rate Note, 11/10/15 (Cat Bond) (144A) 358,912 4,000,000 13.00 NR/NR Successor X, Ltd., Floating Rate Note, 2/25/14 (Cat Bond) (144A) 3,851,200 2,100,000 9.75 B-/NR Successor X, Ltd., Floating Rate Note, 4/4/13 (Cat Bond) (144A) 2,081,100 250,000 11.75 NR/NR Successor X, Ltd., Floating Rate Note, 4/4/13 (Cat Bond) (144A) 247,500 -------------- $ 29,037,501 -------------- Total Insurance $ 93,293,739 --------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 41 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- REAL ESTATE -- 1.2% Specialized REIT's -- 0.1% 1,650,000 BB-/B1 Sabra Health Care LP, 8.125%, 11/1/18 $ 1,755,188 ------------------------------------------------------------------------------------------------------- Diversified Real Estate Activities -- 0.5% 8,000,000 BB-/NR BR Malls International Finance, Ltd., 8.5%, 1/29/49 (Perpetual) (144A) $ 8,420,000 5,590,000 BB-/NR BR Malls International Finance, Ltd., 9.75%, 11/29/49 (Perpetual) (144A) 5,729,750 -------------- $ 14,149,750 ------------------------------------------------------------------------------------------------------- Real Estate Operating Companies -- 0.6% 2,284,651 B/NR Alto Palermo SA, 11.0%, 6/11/12 (144A) $ 2,010,493 6,750,000 B/NR Alto Palermo SA, 7.875%, 5/11/17 (144A) 6,007,500 8,405,000 B/NR IRSA Inversiones y Representaciones SA, 8.5%, 2/2/17 (144A) 7,808,245 -------------- $ 15,826,238 -------------- Total Real Estate $ 31,731,176 ------------------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 1.1% Data Processing & Outsourced Services -- 0.3% 3,597,000 B-/Caa1 First Data Corp., 12.625%, 1/15/21 $ 3,605,992 1,545,000 B+/B1 First Data Corp., 7.375%, 6/15/19 (144A) 1,579,762 3,597,000 B-/Caa1 First Data Corp., 8.25%, 1/15/21 (144A) 3,543,045 -------------- $ 8,728,799 ------------------------------------------------------------------------------------------------------- Application Software -- 0.3% 8,684,000 B/B3 Allen Systems Group, Inc., 10.5%, 11/15/16 (144A) $ 7,207,720 ------------------------------------------------------------------------------------------------------- Systems Software -- 0.5% 13,774,160 NR/NR Pegasus Solutions, Inc., 13.0%, 4/15/14 (144A) (PIK) $ 12,672,227 -------------- Total Software & Services $ 28,608,746 ------------------------------------------------------------------------------------------------------- TECHNOLOGY HARDWARE & EQUIPMENT -- 0.7% Communications Equipment -- 0.3% 5,675,000 B/B3 CommScope, Inc., 8.25%, 1/15/19 (144A) $ 6,058,062 1,675,000 B+/B1 ViaSat, Inc., 6.875%, 6/15/20 (144A) 1,695,938 -------------- $ 7,754,000 ------------------------------------------------------------------------------------------------------- Computer Storage & Peripherals -- 0.2% 3,985,000 BB+/Ba1 Seagate HDD Cayman, 7.75%, 12/15/18 $ 4,393,462 ------------------------------------------------------------------------------------------------------- Electronic Equipment Manufacturers -- 0.2% 5,500,000 BB-/B2 Viasystems, Inc., 7.875%, 5/1/19 (144A) $ 5,568,750 -------------- Total Technology Hardware & Equipment $ 17,716,212 ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 42 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 0.1% Semiconductor Equipment -- 0.1% 3,200,000 BB/B3 MEMC Electronic Materials, Inc., 7.75%, 4/1/19 $ 2,552,000 ------------------------------------------------------------------------------------------------------- Semiconductors -- 0.0% CNY 14,000,000 BB-/NR LDK Solar Co., Ltd., 10.0%, 2/28/14 $ 1,381,529 -------------- Total Semiconductors & Semiconductor Equipment $ 3,933,529 ------------------------------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES -- 4.5% Alternative Carriers -- 0.4% 9,765,000 BB-/WR PAETEC Holding Corp., 8.875%, 6/30/17 $ 10,668,262 ------------------------------------------------------------------------------------------------------- Integrated Telecommunication Services -- 3.1% 20,977,000 B/B1 Cincinnati Bell, Inc., 8.25%, 10/15/17 $ 21,711,196 7,160,000 B/B1 Cincinnati Bell, Inc., 8.375%, 10/15/20 7,160,000 8,478,000 CCC+/B3 Cincinnati Bell, Inc., 8.75%, 3/15/18 7,948,125 2,940,000 BB/Ba2 Frontier Communications Corp., 8.5%, 4/15/20 3,057,600 15,345,000 BB/Ba2 Frontier Communications Corp., 8.75%, 4/15/22 16,112,250 6,285,000 B+/NR Windstream Corp., 7.5%, 6/1/22 6,583,538 2,300,000 B+/Ba3 Windstream Corp., 7.75%, 10/1/21 2,466,750 6,765,000 B+/Ba3 Windstream Corp., 7.75%, 10/15/20 7,238,550 7,345,000 B+/Ba3 Windstream Corp., 8.125%, 9/1/18 7,895,875 -------------- $ 80,173,884 ------------------------------------------------------------------------------------------------------- Wireless Telecommunication Services -- 1.0% CNY 15,000,000 A-/A2 America Movil SAB de CV, 3.5%, 2/8/15 $ 2,401,778 1,000,000 NR/Caa1 Digicel Group, Ltd., 10.5%, 4/15/18 (144A) 1,096,200 2,950,000 NR/B1 Digicel, Ltd., 8.25%, 9/1/17 (144A) 3,075,375 650,000 BB/Ba2 MTS International Funding, Ltd., 8.625%, 6/22/20 (144A) 746,688 3,925,000 B+/B2 NII Capital Corp., 7.625%, 4/1/21 3,650,250 2,300,000 NR/NR Richland Towers Funding LLC, 7.87%, 3/15/16 (144A) 2,353,595 7,800,000 BB/Ba3 Vimpel Communications Via VIP Finance Ireland, Ltd., OJSC, 7.748%, 2/2/21 (144A) 7,762,950 3,275,000 BB/Ba3 Vimpel Communications Via VIP Finance Ireland, Ltd., OJSC, 9.125%, 4/30/18 (144A) 3,602,500 2,100,000 BB/Ba3 VimpelCom Holdings BV, 7.504%, 3/1/22 (144A) 2,037,000 -------------- $ 26,726,336 -------------- Total Telecommunication Services $ 117,568,482 ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 43 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------ UTILITIES -- 3.6% Electric Utilities -- 1.5% 12,081,000 B-/NR Cia de Transporte de Energia Electrica en Alta Tension Transener SA, 9.75%, 8/15/21 (144A) $ 8,577,510 2,640,000 NR/Ba1 Dubai Electricity & Water Authority, 7.375%, 10/21/20 (144A) 2,840,640 5,256,000 B-/B3 Empresa Distribuidora Y Comercializadora Norte, 9.75%, 10/25/22 (144A) 2,969,640 17,750,000 NR/Ba2 Energisa SA, 9.5%, 1/29/49 (Perpetual) (144A) 18,282,500 819,145 B/Ba2 FPL Energy National Wind Portfolio LLC, 6.125%, 3/25/19 (144A) 804,769 838,100 B/Ba2 FPL Energy Wind Funding LLC, 6.876%, 6/27/17 (144A) 670,480 1,950,000 BB+/Baa3 Israel Electric Corp., Ltd., 6.7%, 2/10/17 (144A) 2,022,735 2,695,000 CCC/B2 Texas Competitive Electric Holdings Co., LLC, 11.5%, 10/1/20 (144A) 1,670,900 4,000,000 CC/Caa3 Texas Competitive Electric Holdings Co., LLC, 15.0%, 4/1/21 1,140,000 -------------- $ 38,979,174 ------------------------------------------------------------------------------------------------------ Gas Utilities -- 0.3% 2,437,000 B-/B2 Star Gas Partners LP, 8.875%, 12/1/17 $ 2,424,815 7,966,000 B/B2 Transportadora de Gas del Sur SA, 7.875%, 5/14/17 (144A) 6,611,780 -------------- $ 9,036,595 ------------------------------------------------------------------------------------------------------ Multi-Utilities -- 0.3% 7,092,322 NR/NR Ormat Funding Corp., 8.25%, 12/30/20 $ 6,657,917 ------------------------------------------------------------------------------------------------------ Independent Power Producers & Energy Traders -- 1.5% 14,000,000 NR/B1 Inkia Energy, Ltd., 8.375%, 4/4/21 (144A) $ 14,735,000 940,000 NR/Baa3 Instituto Costarricense de Electricidad, 6.95%, 11/10/21 (144A) 991,700 378,098 NR/NR Juniper Generation LLC, 6.79%, 12/31/14 (144A) 321,723 2,300,000 BB-/Ba2 Listrindo Capital BV, 6.95%, 2/21/19 (144A) 2,393,587 5,025,000 BB-/B1 NRG Energy, Inc., 7.625%, 1/15/18 5,087,812 2,840,000 BB-/B1 NRG Energy, Inc., 7.625%, 5/15/19 2,797,400 8,750,000 BB-/B1 NRG Energy, Inc., 8.25%, 9/1/20 8,771,875 2,200,000 BB-/B1 NRG Energy, Inc., 8.5%, 6/15/19 2,244,000 1,857,000 BB+/Ba2 NSG Holdings LLC, 7.75%, 12/15/25 (144A) 1,866,285 -------------- $ 39,209,382 -------------- Total Utilities $ 93,883,068 ------------------------------------------------------------------------------------------------------ The accompanying notes are an integral part of these financial statements. 44 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ---------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------------- GOVERNMENT -- 0.0% Municipal Environment -- 0.0% 4,400,000 10.36 NR/NR Ohio Air Quality Development Authority, Floating Rate Note, 6/8/22 (144A) (d) $ 220,000 -------------- Total Government $ 220,000 ---------------------------------------------------------------------------------------------------------- TOTAL CORPORATE BONDS (Cost $1,973,189,779) $1,906,108,790 ---------------------------------------------------------------------------------------------------------- FOREIGN GOVERNMENT BONDS -- 3.6% BRL 5,700,000 BBB/Baa2 Brazilian Government International Bond, 10.25%, 1/10/28 $ 3,533,689 13,000,000 B/B2 City of Buenos Aires Argentina, 12.5%, 4/6/15 (144A) 13,162,500 COP 6,986,000,000 BBB-/Baa3 Colombia Government International Bond, 12.0%, 10/22/15 4,953,005 2,275,000 B+/B1 Dominican Republic International Bond, 7.5%, 5/6/21 (144A) 2,396,712 IDR 53,000,000,000 NR/NR Indonesia Treasury Bond, 7.0%, 5/15/22 6,230,177 IDR 84,459,000,000 NR/NR Indonesia Treasury Bond, 8.25%, 6/15/32 10,644,784 EURO 2,950,000 BBB+/Ba1 Ireland Government Bond, 4.5%, 4/18/20 3,365,597 EURO 3,150,000 BBB+/Ba1 Ireland Government Bond, 5.0%, 10/18/20 3,680,332 EURO 2,100,000 BBB+/Ba1 Ireland Government Bond, 5.9%, 10/18/19 2,637,624 MXN 144,510,000 A-/NR Mexican Bonos, 7.75%, 11/13/42 11,497,833 PHP 360,965,000 NR/NR Philippine Government Bond, 5.875%, 3/1/32 8,547,076 4,600,000 B/NR Province of Salta Argentina, 9.5%, 3/16/22 (144A) 4,002,000 7,425,000 B/B3 Provincia de Buenos Aires Argentina, 10.875%, 1/26/21 (144A) 5,151,094 2,125,000 B/B3 Provincia de Buenos Aires Argentina, 11.75%, 10/5/15 (144A) 1,854,062 2,600,000 B/NR Provincia de Neuquen Argentina, 7.875%, 4/26/21 (144A) 2,314,000 9,200,000 BBB/Baa1 Russian Foreign Bond - Eurobond, 5.625%, 4/4/42 (144A) 9,740,040 -------------- $ 93,710,525 -------------- TOTAL FOREIGN GOVERNMENT BONDS (Cost $93,764,216) $ 93,710,525 ---------------------------------------------------------------------------------------------------------- MUNICIPAL BONDS -- 0.8% Municipal Airport -- 0.3% 8,140,000 B/B3 New Jersey Economic Development Authority, 6.25%, 9/15/29 $ 8,159,536 ---------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 45 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) -------------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value -------------------------------------------------------------------------------------------------------------- Municipal Development -- 0.0% 15,000 7.00 B/B3 New Jersey Economic Development Authority, Floating Rate Note, 11/15/30 $ 15,056 -------------------------------------------------------------------------------------------------------------- Municipal General -- 0.5% 3,545,000 BB/B1 County of Cook Illinois, 6.5%, 10/15/40 $ 3,835,619 1,885,000 BB-/B1 Illinois Finance Authority, 6.5%, 10/15/40 2,039,532 8,875,000 0.00 NR/NR Non-Profit Preferred Funding Trust I, Floating Rate Note, 9/15/37 (144A) 5,718,162 -------------- $ 11,593,313 -------------- TOTAL MUNICIPAL BONDS (Cost $21,231,420) $ 19,767,905 -------------------------------------------------------------------------------------------------------------- SENIOR FLOATING RATE LOAN INTERESTS -- 9.1%** ENERGY -- 0.6% Oil & Gas Equipment & Services -- 0.4% 9,427,167 6.25 B+/B2 FTS International Services LLC, Term Loan, 4/19/16 $ 9,105,069 -------------------------------------------------------------------------------------------------------------- Coal & Consumable Fuels -- 0.2% 6,000,000 0.00 NR/NR Bumi Resources Tbk PT, Loan, 8/15/13 $ 6,000,000 -------------- Total Energy $ 15,105,069 -------------------------------------------------------------------------------------------------------------- MATERIALS -- 0.6% Commodity Chemicals -- 0.1% 1,723,188 6.00 B/B2 CPG International I, Inc., Term Loan, 1/26/17 $ 1,662,876 -------------------------------------------------------------------------------------------------------------- Diversified Chemicals -- 0.4% 4,095,000 0.00 NR/NR Ineos Group Holdings, Ltd., Term Loan, 5/4/18 $ 4,120,594 EURO 4,092,762 8.00 B+/Ba3 Ineos Group Holdings, Ltd., Term C1 Facility (New), 12/16/14 5,713,406 -------------- $ 9,834,000 -------------------------------------------------------------------------------------------------------------- Metal & Glass Containers -- 0.0% 304,424 4.50 B/Ba3 BWAY Holding Co., Replacement B Term Loan, 2/9/18 $ 305,565 28,861 4.50 B/Ba3 ICL Industrial Containers ULC, Replacement C Term Loan, 2/9/18 28,969 -------------- $ 334,534 -------------------------------------------------------------------------------------------------------------- Paper Products -- 0.1% 2,375,533 6.50 B/B1 Exopack Holding Corp., Term Loan B, 5/6/17 $ 2,375,533 -------------- Total Materials $ 14,206,943 -------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 46 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 0.7% Aerospace & Defense -- 0.6% 3,799,904 5.47 B/B2 Dubai Aerospace Enterprise (DAE), Tranche B-1 Loan, 7/31/14 $ 3,799,904 3,622,644 5.47 B/B2 Dubai Aerospace Enterprise (DAE), Tranche B-2 Loan, 7/31/14 3,622,644 3,784,825 6.49 BB/B1 Hunter Defense Technologies, Inc., Series 1 New Term Loan, 8/22/14 3,349,570 1,968,441 3.49 BB-/B1 Hunter Defense Technologies, Inc., Term Loan, 8/22/14 1,751,913 3,459,599 9.25 CCC/WR IAP Worldwide Services, Inc., Term Loan (First-Lien), 12/20/12 3,122,288 -------------- $ 15,646,319 ------------------------------------------------------------------------------------------------------- Building Products -- 0.0% 318,182 9.00 B-/B3 Goodman Global Group, Inc., Loan (Second Lien), 10/6/17 $ 324,247 ------------------------------------------------------------------------------------------------------- Electrical Components & Equipment -- 0.0% 857,803 5.75 B+/B1 Scotsman Industries, Inc., Term Loan, 4/30/16 $ 858,875 ------------------------------------------------------------------------------------------------------- Industrial Conglomerates -- 0.1% 1,467,116 6.25 B+/B2 Pro Mach, Inc., Term Loan, 7/6/17 $ 1,445,109 -------------- Total Capital Goods $ 18,274,550 ------------------------------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES -- 0.2% Environmental & Facilities Services -- 0.1% 2,144,398 8.75 NR/WR Aquilex Holdings LLC, Term Loan, 4/1/16 $ 2,128,315 655,000 5.50 B+/B1 WCA Waste Corp., Term Loan, 3/1/18 658,275 -------------- $ 2,786,590 ------------------------------------------------------------------------------------------------------- Research & Consulting Services -- 0.1% 1,335,446 5.75 BB/B1 Wyle Services Corp., Term Loan (First Lien), 3/31/17 $ 1,333,776 -------------- Total Commercial Services & Supplies $ 4,120,366 ------------------------------------------------------------------------------------------------------- TRANSPORTATION -- 0.1% Air Freight & Logistics -- 0.1% 508,620 5.47 NR/NR CEVA Group Plc, Dollar Tranche B Pre Funded L/C, 8/31/16 $ 480,646 794,899 5.47 NR/NR CEVA Group Plc, EGL Tranche B Term Loan, 8/31/16 749,192 779,050 5.47 NR/Ba3 CEVA Group Plc, U.S. Tranche B Term Loan, 8/31/16 736,202 -------------- $ 1,966,040 -------------- Total Transportation $ 1,966,040 ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 47 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------ AUTOMOBILES & COMPONENTS -- 0.8% Auto Parts & Equipment -- 0.1% 22,398 2.74 BB-/Ba3 Allison Transmission, Inc., Term B-1 Loan, 8/7/14 $ 22,377 3,175,000 6.75 NR/NR TI Group Automotive Systems LLC, Term Loan, 3/1/19 3,190,875 -------------- $ 3,213,252 ------------------------------------------------------------------------------------------------------ Automobile Manufacturers -- 0.7% 17,269,500 6.00 BB/Ba2 Chrysler Group LLC, Tranche B Term Loan, 4/28/17 $ 17,617,187 -------------- Total Automobiles & Components $ 20,830,439 ------------------------------------------------------------------------------------------------------ CONSUMER DURABLES & APPAREL -- 0.1% Housewares & Specialties -- 0.1% 2,320,000 5.25 B+/B1 Yankee Candle Co, Inc., Initial Term Loan, 3/2/19 $ 2,340,300 -------------- Total Consumer Durables & Apparel $ 2,340,300 ------------------------------------------------------------------------------------------------------ CONSUMER SERVICES -- 0.2% Specialized Consumer Services -- 0.2% 6,325,000 5.50 B/Ba3 Ascent Capital Group, Inc., Term Loan, 3/6/18 $ 6,384,297 -------------- Total Consumer Services $ 6,384,297 ------------------------------------------------------------------------------------------------------ MEDIA -- 0.3% Advertising -- 0.1% 2,238,598 5.00 B+/Ba3 Affinion Group, Inc., Tranche B Term Loan, 10/9/16 $ 2,132,265 ------------------------------------------------------------------------------------------------------ Cable & Satellite -- 0.2% 5,243,356 6.74 B-/B1 WideOpenWest LLC, Series A New Term Loan, 6/18/14 $ 5,256,465 ------------------------------------------------------------------------------------------------------ Publishing -- 0.0% 773,795 2.49 B/B2 Cengage Learning Acquisitions, Inc., Term Loan (Non Extending), 7/4/14 $ 709,818 -------------- Total Media $ 8,098,548 ------------------------------------------------------------------------------------------------------ RETAILING -- 0.2% Automotive Retail -- 0.2% 6,467,500 7.50 NR/B1 Stackpole International, Term Loan, 7/8/17 $ 6,516,006 -------------- Total Retailing $ 6,516,006 ------------------------------------------------------------------------------------------------------ FOOD, BEVERAGE & TOBACCO -- 0.6% Packaged Foods & Meats -- 0.6% 13,297,500 7.00 B+/B1 Pierre Foods, Inc., Loan (First Lien), 9/30/16 $ 13,372,298 The accompanying notes are an integral part of these financial statements. 48 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 -------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value -------------------------------------------------------------------------------------------------------- Packaged Foods & Meats -- (continued) 2,800,000 11.25 BB-/B2 Pierre Foods, Inc., Loan (Second Lien), 7/29/17 $ 2,810,500 -------------- $ 16,182,798 -------------- Total Food, Beverage & Tobacco $ 16,182,798 -------------------------------------------------------------------------------------------------------- HOUSEHOLD & PERSONAL PRODUCTS -- 0.1% Personal Products -- 0.1% 1,503,340 4.75 BB-/Ba3 Revlon, Inc., Term Loan B, 11/19/17 $ 1,506,393 -------------- Total Household & Personal Products $ 1,506,393 -------------------------------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 1.5% Health Care Services -- 1.0% 1,478,920 7.25 B+/Ba3 Alliance HealthCare Services, Inc., Initial Term Loan, 6/1/16 $ 1,419,763 2,076,948 6.50 BB-/Ba3 inVentiv Health, Inc., Consolidated Term Loan, 8/4/16 1,970,505 5,049,000 7.00 B+/B1 National Mentor Holdings, Inc., Tranche B Term Loan, 1/18/17 5,013,238 4,236,086 8.25 B/B2 National Surgical Hospitals, Inc., Initial Term Loan, 1/4/17 4,045,462 4,348,612 7.50 NR/B1 Prime Healthcare Services, Term B Loan, 4/28/15 4,326,869 2,816,667 8.75 BB-/Ba1 Sun Healthcare Group, Inc., Term Loan, 10/18/16 2,774,417 4,535,088 6.50 B/B1 Surgery Center Holdings, Inc., Term Loan, 9/20/16 4,331,009 1,456,563 7.25 B+/B1 Virtual Radiologic Corp., Term Loan A, 11/3/16 1,354,603 -------------- $ 25,235,866 -------------------------------------------------------------------------------------------------------- Health Care Facilities -- 0.2% 4,122,947 6.50 B/B1 Ardent Medical Services, Inc., Term Loan, 9/15/15 $ 4,138,408 -------------------------------------------------------------------------------------------------------- Managed Health Care -- 0.2% 2,305,000 8.50 B+/B1 Aveta, Inc., MMM Term Loan, 3/20/17 $ 2,302,119 2,305,000 8.50 B+/B1 Aveta, Inc., NAMM Term Loan, 4/4/17 2,310,762 -------------- $ 4,612,881 -------------------------------------------------------------------------------------------------------- Health Care Technology -- 0.1% 698,220 4.50 BB/Ba3 IMS Health, Inc., Tranche B Dollar Term Loan (2011), 8/31/17 $ 702,008 354,592 6.25 B/NR Physician Oncology Services LP, Delayed Draw Term Loan, 1/31/17 342,181 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 49 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- Health Care Technology -- (continued) 2,918,726 6.25 B/B2 Physician Oncology Services LP, Effective Date Term Loan, 2/10/17 $ 2,816,570 -------------- $ 3,860,759 -------------- Total Health Care Equipment & Services $ 37,847,914 ------------------------------------------------------------------------------------------------------- PHARMACEUTICALS, BIOTECHNOLOGY & LIFE SCIENCES -- 0.3% Biotechnology -- 0.3% 6,112,625 5.50 BB/B2 Axcan Intermediate Holdings, Inc., Term B-1 Loan, 1/25/17 $ 6,061,053 1,063,154 6.50 B+/B1 Generic Drug Holdings, Inc., Closing Date Term Loan, 4/7/16 1,060,496 146,182 6.50 B+/B1 Generic Drug Holdings, Inc., Delayed Draw Term Loan, 4/8/16 145,817 1,495,147 4.50 BB-/Ba3 Grifols, Inc., New U.S. Tranche B Term Loan, 6/4/17 1,500,521 -------------- $ 8,767,887 -------------- Total Pharmaceuticals, Biotechnology & Life Sciences $ 8,767,887 ------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.4% Other Diversified Financial Services -- 0.3% 993,485 0.00 NR/NR Long Haul Holdings, Ltd., Facility A Loan, 1/14/13 $ 933,876 792,928 0.00 NR/NR Long Haul Holdings, Ltd., Facility B, 1/14/13 745,353 7,925,138 7.50 B+/B2 Preferred Sands Holding Co., LLC, Term B Loan, 12/15/16 7,845,886 -------------- $ 9,525,115 ------------------------------------------------------------------------------------------------------- Consumer Finance -- 0.1% 1,765,000 5.50 CCC+/B2 Springleaf Finance Corp., Initial Loan, 5/28/17 $ 1,675,426 -------------- Total Diversified Financials $ 11,200,541 ------------------------------------------------------------------------------------------------------- INSURANCE -- 0.9% Insurance Brokers -- 0.7% 1,663,439 3.47 B-/B2 Alliant Holdings I, Inc., Term Loan, 8/21/14 $ 1,667,362 3,290,905 6.75 B-/B2 Alliant Holdings I, Inc., Tranche D Incremental Loan, 8/21/14 3,332,275 5,508,861 6.75 B+/B1 HUB International Holdings, Inc., 2014 Additional Term Loan, 6/13/14 5,559,311 737,601 2.97 B+/B1 HUB International Holdings, Inc., 2014 Delayed Draw Term Loan, 6/13/14 736,366 3,281,235 2.97 B+/B1 HUB International Holdings, Inc., 2014 Initial Term Loan, 6/13/14 3,269,935 The accompanying notes are an integral part of these financial statements. 50 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------ Insurance Brokers -- (continued) 2,817,750 7.00 B/B1 USI Holdings Corp., Series C New Term Loan, 5/5/14 $ 2,842,335 -------------- $ 17,407,584 ------------------------------------------------------------------------------------------------------ Multi-line Insurance -- 0.2% 6,750,000 5.74 CCC+/Caa1 AmWINS Group, Inc., Initial Term Loan (Second Lien), 6/11/13 $ 6,631,875 -------------- Total Insurance $ 24,039,459 ------------------------------------------------------------------------------------------------------ REAL ESTATE -- 0.0% Real Estate Development -- 0.0% 1,132,182 8.25 B-/B1 Ozburn-Hessey Logistics LLC, Term Loan (First Lien), 4/7/16 $ 999,150 -------------- Total Real Estate $ 999,150 ------------------------------------------------------------------------------------------------------ SOFTWARE & SERVICES -- 0.7% Application Software -- 0.7% 15,635,000 9.00 B/Ba3 Expert Global Solutions, Inc., Term B Advance (First Lien), 3/13/18 $ 15,498,194 698,233 5.25 B+/B1 Vertafore, Inc., Term Loan (First Lien), 7/31/16 701,507 3,500,000 9.75 CCC+/Caa1 Vertafore, Inc., Term Loan (Second Lien), 10/18/17 3,535,000 -------------- $ 19,734,701 -------------- Total Software & Services $ 19,734,701 ------------------------------------------------------------------------------------------------------ TECHNOLOGY HARDWARE & EQUIPMENT -- 0.6% Electronic Equipment Manufacturers -- 0.5% 13,175,000 0.00 BB-/B2 Viasystems, Inc., 4/3/13 $ 13,175,000 ------------------------------------------------------------------------------------------------------ Electronic Components -- 0.1% 3,994,773 5.00 B/B2 Scitor Corp., Term Loan, 1/21/17 $ 3,909,884 -------------- Total Technology Hardware & Equipment $ 17,084,884 ------------------------------------------------------------------------------------------------------ UTILITIES -- 0.2% Electric Utilities -- 0.2% 8,805,543 4.74 CCC/B2 Texas Competitive Electric Holdings Co LLC, 2017 Term Loan (Extending), 10/10/17 $ 4,846,721 -------------- Total Utilities $ 4,846,721 ------------------------------------------------------------------------------------------------------ TOTAL SENIOR FLOATING RATE LOAN INTERESTS (Cost $241,690,637) $ 240,053,006 ------------------------------------------------------------------------------------------------------ The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 51 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) ---------------------------------------------------------------------------------------------- Shares Value ---------------------------------------------------------------------------------------------- RIGHTS/WARRANTS -- 0.0% ENERGY -- 0.0% Oil & Gas Equipment & Services -- 0.0% 2,275 Green Field Energy Services, Inc. (144A) $ 138,775 ---------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 0.0% 5,925,293 Norse Energy Corp., ASA, 6/16/15 $ 155,327 ---------------------------------------------------------------------------------------------- Total Energy $ 294,102 ---------------------------------------------------------------------------------------------- TOTAL RIGHTS/WARRANTS (Cost $90,991) $ 294,102 ---------------------------------------------------------------------------------------------- Principal Amount ($) ---------------------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENTS -- 0.8% Repurchase Agreements -- 0.8% 10,615,000 JPMorgan, Inc., 0.20%, dated 4/30/12, repurchase price of $10,615,000 plus accrued interest on 5/1/12 collateralized by $10,827,307 Federal National Mortgage Association (ARM), 2.191 - 5.904%, 11/1/35 - 8/1/45 $ 10,615,000 10,615,000 RBC Capital Markets, Inc., 0.19%, dated 4/30/12, repurchase price of $10,615,000 plus accrued interest on 5/1/12 collateralized by $10,827,307 Freddie Mac Giant, 3.5%, 2/1/42 10,615,000 -------------- $ 21,230,000 ---------------------------------------------------------------------------------------------- TOTAL TEMPORARY CASH INVESTMENTS (Cost $21,230,000) $ 21,230,000 ---------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 97.4% (Cost $2,663,396,090) (a) (e) $2,570,669,843 ---------------------------------------------------------------------------------------------- OTHER ASSETS & LIABILITIES -- 2.6% $ 69,932,801 ---------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $2,640,602,644 ============================================================================================== Notional Unrealized Principal Swap Counterparty/Referenced Obligation Gain ---------------------------------------------------------------------------------------------- $ 14,000,000 JPMorgan Chase & Co., Index : Markit CDX.NA.HY.17, 5.0%, 12/20/16 $1,018,624 ---------- TOTAL CREDIT DEFAULT SWAP AGREEMENTS (Cost $1,442,875) $1,018,624 ========== (A.D.R.) American Depositary Receipt. (G.D.R.) Global Depositary Receipt. * Non-income producing security. WR Security rating withdrawn by either S&P or Moody's. NR Not rated by either S&P or Moody's. The accompanying notes are an integral part of these financial statements. 52 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 (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's Real Estate Investment Trust. PIK Represents a pay in kind security. (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, 2012, the value of these securities amounted to $1,333,407,384 or 50.5% of total 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 United States 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, 2012, the net unrealized loss on investments based on cost for federal income tax purposes of $2,662,968,665 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $ 112,597,557 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (204,896,379) ------------- Net unrealized loss $ (92,298,822) ============= (b) Debt obligation with a variable interest rate. Rate shown is rate at end of period. (c) Security is in default and is non-income producing. (d) Security is valued using fair value methods (other than prices supplied by independent pricing services). See Notes to Financial Statements -- Note 1A. (e) Distributions of investments by country of issue (excluding temporary cash investments) as a percentage of total investment in securities, is as follows: United States 57.0% Cayman Islands 5.1 Mexico 3.9 Luxembourg 3.7 Argentina 3.4 Netherlands 3.0 Brazil 2.9 United Kingdom 2.6 Ireland 2.4 China 2.0 Canada 1.8 Singapore 1.3 Peru 1.2 Other (individually less than 1%) 9.7 ----- 100.0% ===== The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 53 Schedule of Investments | 4/30/12 (Consolidated) (unaudited) (continued) NOTE: Principal amounts are denominated in U.S. Dollars unless otherwise noted: NOK Norwegian Krone EURO Euro BRL Brazilian Real CAD Canadian Dollar TRY Turkish Lira CNY New Chinese Yuan GBP British Pound Sterling IDR Indonesian Rupiah PHP Philippine Peso MXN Mexican Peso COP Columbian Peso Purchases and sales of securities (excluding temporary cash investments) for the six months ended April 30, 2012 aggregated $576,403,205 and $390,452,132, respectively. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Level 1 -- quoted prices in active markets for identical securities Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) Generally, equity securities are categorized as Level 1, fixed income securities and senior loans as Level 2 and securities valued using fair value methods (other than prices supplied by independent pricing services) are categorized as Level 3. See Notes to Financial Statements -- Note 1A. The accompanying notes are an integral part of these financial statements. 54 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 The following is a summary of the inputs used as of April 30, 2012, in valuing the Fund's assets: -------------------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total -------------------------------------------------------------------------------------------------- Asset Backed Securities $ -- $ 53,824,510 $ -- $ 53,824,510 Collateralized Mortgage Obligations -- 33,919,580 -- 33,919,580 Corporate Bonds -- 1,905,888,790 220,000 1,906,108,790 Convertible Corporate Bonds -- 159,937,454 2,841,426 162,778,880 Municipal Bonds -- 19,767,905 -- 19,767,905 Foreign Government Bonds -- 93,710,525 -- 93,710,525 Senior Floating Rate Loan Interests -- 240,053,006 -- 240,053,006 Common Stocks 21,937,809 290,156 4,804,603 27,032,568 Preferred Stocks 8,516,620 2,934,944 -- 11,451,564 Convertible Preferred Stocks 498,413 -- -- 498,413 Warrants 155,327 138,775 -- 294,102 Repurchase Agreements -- 21,230,000 -- 21,230,000 -------------------------------------------------------------------------------------------------- Total $31,108,169 $2,531,695,645 $7,866,029 $2,570,669,843 ================================================================================================== Other Financial Instruments* $ -- $ 1,022,163 $ -- $ 1,022,163 ================================================================================================== * Other financial instruments include credit default swaps and the unrealized gain (loss) on foreign exchange contracts The following is a reconciliation of assets valued using significant observable inputs (Level 3): -------------------------------------------------------------------------------------------------- Convertible Corporate Common Corporate Bonds Stocks Bonds Total -------------------------------------------------------------------------------------------------- Balance as of 10/31/11 $ -- $7,422,267 $460,680 $7,882,947 Realized gain (loss) -- 1,202,521 -- 1,202,521 Change in unrealized appreciation (depreciation)(1) (395,042) (1,629,098) (240,680) (2,264,820) Net purchases (sales) -- (2,191,087) -- (2,191,087) Transfers in and out of Level 3 3,236,468 -- -- 3,236,438 -------------------------------------------------------------------------------------------------- Balance as of 4/30/12 $2,841,426 $4,804,603 $220,000 $7,866,029 ================================================================================================== (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 gain (loss) on investments in the Statement of Operations. * Transfers are calculated on the beginning of period values. Net change in unrealized appreciation (depreciation) of investments still held as of 4/30/12 $98,479 ------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 55 Statement of Assets and Liabilities | 4/30/12 (Consolidated) (unaudited) ASSETS: Investment in securities (cost $2,663,396,090) $2,570,669,843 Cash 10,336,264 Credit default swap collateral 350,000 Foreign currencies, at value (cost $15,482,350) 15,698,190 Receivables -- Investment securities sold 10,971,471 Fund shares sold 14,327,325 Dividends and interest 49,391,891 Forward foreign currency portfolio hedge contracts, open-net 3,539 Unrealized appreciation on credit default swaps 1,018,624 Other 762,751 ---------------------------------------------------------------------------------------- Total assets $2,673,529,898 ---------------------------------------------------------------------------------------- LIABILITIES: Payables -- Investment securities purchased $ 20,683,568 Fund shares repurchased 8,940,920 Dividends 2,014,933 Due to affiliates 1,092,624 Accrued expenses 161,625 Unrealized depreciation on unfunded corporate loans 33,583 ---------------------------------------------------------------------------------------- Total liabilities $ 32,927,254 ---------------------------------------------------------------------------------------- NET ASSETS: Paid-in capital $3,006,640,645 Distributions in excess of net investment income (9,338,954) Accumulated net realized loss on investments and foreign currency transactions (265,167,897) Net unrealized loss on investments (92,759,830) Net unrealized gain on credit default swaps 1,018,624 Net unrealized gain on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 210,056 ---------------------------------------------------------------------------------------- Total net assets $2,640,602,644 ======================================================================================== NET ASSET VALUE PER SHARE: No par value (unlimited number of shares authorized) Class A (based on $703,163,556/70,715,793 shares) $ 9.94 Class B (based on 43,546,186/4,376,443 shares) $ 9.95 Class C (based on $465,460,838/46,933,451 shares) $ 9.92 Class Y (based on $1,420,400,798/145,314,429 shares) $ 9.77 Class Z (based on $8,031,266/784,801 shares) $ 10.23 MAXIMUM OFFERING PRICE: Class A ($9.94 [divided by] 95.5%) $ 10.41 ======================================================================================== The accompanying notes are an integral part of these financial statements. 56 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 Statement of Operations (Consolidated) (unaudited) For Six Months Ended 4/30/12 INVESTMENT INCOME: Interest (net of foreign taxes withheld of $17,909) $ 108,294,523 Dividends (net of foreign taxes withheld of $18,741) 689,269 Income from securities loaned, net 79,184 ---------------------------------------------------------------------------------------------------------- Total investment income $ 109,062,976 ---------------------------------------------------------------------------------------------------------- EXPENSES: Management fees $ 7,359,869 Transfer agent fees Class A 351,610 Class B 35,705 Class C 127,606 Class Y 41,868 Class Z 3,150 Distribution fees Class A 821,908 Class B 230,328 Class C 2,260,518 Shareholder communication expense 1,518,458 Administrative reimbursements 358,738 Custodian fees 49,378 Registration fees 130,242 Professional fees 71,939 Printing expense 24,038 Fees and expenses of nonaffiliated Trustees 39,707 Miscellaneous 144,418 ---------------------------------------------------------------------------------------------------------- Total expenses $ 13,569,481 ---------------------------------------------------------------------------------------------------------- Net investment income $ 95,493,495 ---------------------------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS, CLASS ACTION AND FOREIGN CURRENCY TRANSACTIONS: Net realized gain (loss) on: Investments $ (27,898,485) Class actions 610,059 Credit default swaps (947,611) Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (871,473) $ (29,107,510) ---------------------------------------------------------------------------------------------------------- Change in net unrealized loss on: Investments $ 70,692,488 Credit default swaps 1,204,474 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 221,332 $ 72,118,294 ---------------------------------------------------------------------------------------------------------- Net gain on investments $ 43,010,784 ---------------------------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $ 138,504,279 ========================================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 57 Statements of Changes in Net Assets Six Months Ended 4/30/12 Year Ended (unaudited) 10/31/11 FROM OPERATIONS: Net investment income $ 95,493,495 $ 205,492,800 Net realized gain (loss) on investments, credit default swaps, class actions and foreign currency transactions (29,107,510) 64,438,836 Change in net unrealized gain (loss) on investments and foreign currency transactions 72,118,294 (239,192,629) -------------------------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $ 138,504,279 $ 30,739,007 -------------------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.43 and $0.77 per share, respectively) $ (29,030,404) $ (71,500,008) Class B ($0.39 and $0.69 per share, respectively) (1,867,911) (4,324,584) Class C ($0.40 and $0.70 per share, respectively) (18,553,265) (34,373,840) Class Y ($0.44 and $0.80 per share, respectively) (61,472,202) (93,119,401) Class Z ($0.46 and $0.83 per share, respectively) (345,124) (1,004,924) -------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (111,268,906) $ (204,322,757) -------------------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale or exchange of shares $ 504,833,366 $ 1,848,261,452 Reinvestment of distributions 96,967,762 166,943,218 Cost of shares repurchased (520,287,942) (1,997,556,834) -------------------------------------------------------------------------------------------------------- Net increase in net assets resulting from Fund share transactions $ 81,513,186 $ 17,647,836 -------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets $ 108,748,559 $ (155,935,914) NET ASSETS: Beginning of period 2,531,854,085 2,687,789,999 -------------------------------------------------------------------------------------------------------- End of period $2,640,602,644 $ 2,531,854,085 ======================================================================================================== Undistributed (distributions in excess of) net investment income $ (9,338,954) $ 6,436,457 ======================================================================================================== The accompanying notes are an integral part of these financial statements. 58 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 --------------------------------------------------------------------------------------------------- '12 Shares '12 Amount '11 Shares '11 Amount (unaudited) (unaudited) --------------------------------------------------------------------------------------------------- Class A Shares sold 14,689,614 $ 144,155,419 45,322,070 $ 478,856,191 Reinvestment of distributions 2,563,272 25,033,386 5,325,281 55,922,586 Less shares repurchased (12,554,626) (122,504,822) (90,708,421) (956,573,557) --------------------------------------------------------------------------------------------------- Net increase (decrease) 4,698,260 $ 46,683,983 (40,061,070) $ (421,794,780) =================================================================================================== Class B Shares sold or exchanged 70,379 $ 687,915 182,501 $ 1,919,382 Reinvestment of distributions 154,313 1,504,922 315,412 3,301,623 Less shares repurchased (985,227) (9,628,117) (2,965,546) (31,230,042) --------------------------------------------------------------------------------------------------- Net decrease (760,535) $ (7,435,280) (2,467,633) $ (26,009,037) =================================================================================================== Class C Shares sold 3,916,842 $ 38,326,162 8,590,010 $ 90,033,530 Reinvestment of distributions 1,295,816 12,611,271 2,193,451 22,827,373 Less shares repurchased (5,265,238) (51,171,484) (13,781,313) (142,849,741) --------------------------------------------------------------------------------------------------- Net decrease (52,580) $ (234,052) (2,997,852) $ (29,988,838) =================================================================================================== Class Y Shares sold 33,216,245 $ 320,369,641 123,093,815 $1,257,879,328 Reinvestment of distributions 5,995,513 57,569,484 8,210,266 84,133,526 Less shares repurchased (35,139,544) (335,804,005) (82,635,654) (847,547,383) --------------------------------------------------------------------------------------------------- Net increase 4,072,214 $ 42,135,120 48,668,427 $ 494,465,471 =================================================================================================== Class Z Shares sold 127,481 $ 1,294,229 1,776,624 $ 19,573,021 Reinvestment of distributions 24,759 248,698 69,254 758,110 Less shares repurchased (117,088) (1,179,513) (1,778,794) (19,356,111) --------------------------------------------------------------------------------------------------- Net increase 35,152 $ 363,414 67,084 $ 975,020 =================================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 59 Financial Highlights ------------------------------------------------------------------------------------------------------ Six Months Ended 4/30/12 (Consolidated) (unaudited) ------------------------------------------------------------------------------------------------------ Class A Net asset value, beginning of period $ 9.83 ------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income $ 0.38 Net realized and unrealized gain (loss) on investments and foreign currency transactions 0.16 ------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 0.54 Distributions to shareowners: Net investment income (0.43) Net realized gain -- ------------------------------------------------------------------------------------------------------ Total distributions $ (0.43) ------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 0.11 ------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 9.94 ====================================================================================================== Total return* 5.68% Ratio of net expenses to average net assets+ 1.12%* Ratio of net investment income to average net assets+ 7.72%* Portfolio turnover rate 32%* Net assets, end of period (in thousands) $703,164 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.12%* Net investment income 7.72%* Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.12%* Net investment income 7.72%* ====================================================================================================== --------------------------------------------------------------------------------------------------------------------- Year Ended 10/31/11 Year Ended (Consolidated) 10/31/10 --------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 10.53 $ 9.39 --------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.77 $ 0.80 Net realized and unrealized gain (loss) on investments and foreign currency transactions (0.70) 1.11 --------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.07 $ 1.91 Distributions to shareowners: Net investment income (0.77) (0.77) Net realized gain -- -- --------------------------------------------------------------------------------------------------------------------- Total distributions $ (0.77) $ (0.77) --------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.70) $ 1.14 --------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.83 $ 10.53 ===================================================================================================================== Total return* 0.49% 21.16% Ratio of net expenses to average net assets+ 1.09% 1.10% Ratio of net investment income to average net assets+ 7.37% 8.08% Portfolio turnover rate 52% 49% Net assets, end of period (in thousands) $648,797 $1,117,231 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.09% 1.15% Net investment income 7.37% 8.02% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.09% 1.10% Net investment income 7.37% 8.07% ===================================================================================================================== ------------------------------------------------------------------------------------------------------------------- Year Ended Year Ended 10/31/09 10/31/08 ------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 7.56 $ 12.30 ------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.90 $ 1.03 Net realized and unrealized gain (loss) on investments and foreign currency transactions 1.98 (4.59) ------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 2.88 $ (3.56) Distributions to shareowners: Net investment income (1.05) (1.07) Net realized gain -- (0.11) ------------------------------------------------------------------------------------------------------------------- Total distributions $ (1.05) $ (1.18) ------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 1.83 $ (4.74) ------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.39 $ 7.56 =================================================================================================================== Total return* 43.56% (31.45)% Ratio of net expenses to average net assets+ 1.10% 1.10% Ratio of net investment income to average net assets+ 11.68% 9.25% Portfolio turnover rate 33% 25% Net assets, end of period (in thousands) $1,018,040 $759,925 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.32% 1.18% Net investment income 11.46% 9.17% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.10% 1.10% Net investment income 11.68% 9.25% =================================================================================================================== ----------------------------------------------------------------------------------------------------- Year Ended 10/31/07 ----------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 12.34 ----------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.96 Net realized and unrealized gain (loss) on investments and foreign currency transactions 0.04 ----------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 1.00 Distributions to shareowners: Net investment income (0.98) Net realized gain (0.06) ----------------------------------------------------------------------------------------------------- Total distributions $ (1.04) ----------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.04) ----------------------------------------------------------------------------------------------------- Net asset value, end of period $ 12.30 ===================================================================================================== Total return* 8.30% Ratio of net expenses to average net assets+ 1.06% Ratio of net investment income to average net assets+ 7.73% Portfolio turnover rate 31% Net assets, end of period (in thousands) $1,369,044 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.06% Net investment income 7.73% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.06% Net investment income 7.73% ===================================================================================================== * 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. + Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 60 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ------------------------------------------------------------------------------------------------------ Six Months Ended 4/30/12 (Consolidated) (unaudited) ------------------------------------------------------------------------------------------------------ Class B Net asset value, beginning of period $ 9.83 ------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income $ 0.28 Net realized and unrealized gain (loss) on investments and foreign currency transactions 0.23 ------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 0.51 Distributions to shareowners: Net investment income (0.39) Net realized gain -- ------------------------------------------------------------------------------------------------------ Total distributions $ (0.39) ------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 0.12 ------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 9.95 ====================================================================================================== Total return* 5.37% Ratio of net expenses to average net assets+ 1.92%* Ratio of net investment income to average net assets+ 5.90%* Portfolio turnover rate 32%* Net assets, end of period (in thousands) $43,546 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.92%* Net investment income 5.90%* Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.92%* Net investment income 5.90%* ====================================================================================================== --------------------------------------------------------------------------------------------------------------------- Year Ended 10/31/11 Year Ended (Consolidated) 10/31/10 --------------------------------------------------------------------------------------------------------------------- Class B Net asset value, beginning of period $ 10.53 $ 9.37 --------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.68 $ 0.70 Net realized and unrealized gain (loss) on investments and foreign currency transactions (0.69) 1.15 --------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.01) $ 1.85 Distributions to shareowners: Net investment income (0.69) (0.69) Net realized gain -- -- --------------------------------------------------------------------------------------------------------------------- Total distributions $ (0.69) $ (0.69) --------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.70) $ 1.16 --------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.83 $ 10.53 ===================================================================================================================== Total return* (0.32)% 20.40% Ratio of net expenses to average net assets+ 1.90% 1.92% Ratio of net investment income to average net assets+ 6.59% 7.27% Portfolio turnover rate 52% 49% Net assets, end of period (in thousands) $50,513 $80,100 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.90% 1.92% Net investment income 6.56% 7.27% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.90% 1.92% Net investment income 6.59% 7.27% ===================================================================================================================== --------------------------------------------------------------------------------------------------------------------------------- Year Ended Year Ended Year Ended 10/31/09 10/31/08 10/31/07 --------------------------------------------------------------------------------------------------------------------------------- Class B Net asset value, beginning of period $ 7.54 $ 12.27 $ 12.31 --------------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.81 $ 0.93 $ 0.86 Net realized and unrealized gain (loss) on investments and foreign currency transactions 2.01 (4.57) 0.03 --------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 2.82 $ (3.64) $ 0.89 Distributions to shareowners: Net investment income (0.99) (0.98) (0.87) Net realized gain -- (0.11) (0.06) --------------------------------------------------------------------------------------------------------------------------------- Total distributions $ (0.99) $ (1.09) $ (0.93) --------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 1.83 $ (4.73) $ (0.04) --------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.37 $ 7.54 $ 12.27 ================================================================================================================================= Total return* 42.42% (32.02)% 7.41% Ratio of net expenses to average net assets+ 2.00% 1.92% 1.86% Ratio of net investment income to average net assets+ 10.88% 8.47% 6.93% Portfolio turnover rate 33% 25% 31% Net assets, end of period (in thousands) $96,411 $83,412 $155,523 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 2.08% 1.92% 1.86% Net investment income 10.80% 8.47% 6.93% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 2.00% 1.92% 1.85% Net investment income 10.88% 8.47% 6.94% ================================================================================================================================= * 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. + Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 61 Financial Highlights (continued) ------------------------------------------------------------------------------------------------------------- Six Months Ended 4/30/12 (Consolidated) (unaudited) ------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 9.80 ------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.33 Net realized and unrealized gain (loss) on investments and foreign currency transactions 0.19 ------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.52 Distributions to shareowners: Net investment income (0.40) Net realized gain -- ------------------------------------------------------------------------------------------------------------- Total distributions $ (0.40) ------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 0.12 ------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.92 ============================================================================================================= Total return* 5.45% Ratio of net expenses to average net assets+ 1.78%* Ratio of net investment income to average net assets+ 6.74%* Portfolio turnover rate 32%* Net assets, end of period (in thousands) $465,461 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.78%* Net investment income 6.74%* Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.78%* Net investment income 6.74%* ============================================================================================================= ----------------------------------------------------------------------------------------------------------------------- Year Ended 10/31/11 Year Ended (Consolidated) 10/31/10 ----------------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 10.49 $ 9.34 ----------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.70 $ 0.73 Net realized and unrealized gain (loss) on investments and foreign currency transactions (0.69) 1.11 ----------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.01 $ 1.84 Distributions to shareowners: Net investment income (0.70) (0.69) Net realized gain -- -- ----------------------------------------------------------------------------------------------------------------------- Total distributions $ (0.70) $ (0.69) ----------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.69) $ 1.15 ----------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.80 $ 10.49 ======================================================================================================================= Total return* (0.13)% 20.43% Ratio of net expenses to average net assets+ 1.78% 1.82% Ratio of net investment income to average net assets+ 6.72% 7.37% Portfolio turnover rate 52% 49% Net assets, end of period (in thousands) $460,512 $524,448 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.78% 1.82% Net investment income 6.72% 7.37% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.78% 1.82% Net investment income 6.72% 7.37% ======================================================================================================================= --------------------------------------------------------------------------------------------------------------------------------- Year Ended Year Ended Year Ended 10/31/09 10/31/08 10/31/07 --------------------------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 7.51 $ 12.24 $ 12.28 --------------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.82 $ 0.93 $ 0.86 Net realized and unrealized gain (loss) on investments and foreign currency transactions 1.99 (4.57) 0.04 --------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 2.81 $ (3.64) $ 0.90 Distributions to shareowners: Net investment income (0.98) (0.98) (0.88) Net realized gain -- (0.11) (0.06) --------------------------------------------------------------------------------------------------------------------------------- Total distributions $ (0.98) $ (1.09) $ (0.94) --------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 1.83 $ (4.73) $ (0.04) --------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.34 $ 7.51 $ 12.24 ================================================================================================================================= Total return* 42.56% (32.08)% 7.48% Ratio of net expenses to average net assets+ 1.98% 1.85% 1.82% Ratio of net investment income to average net assets+ 10.78% 8.55% 6.96% Portfolio turnover rate 33% 25% 31% Net assets, end of period (in thousands) $461,644 $347,459 $598,195 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.98% 1.85% 1.82% Net investment income 10.78% 8.55% 6.96% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.98% 1.85% 1.82% Net investment income 10.78% 8.55% 6.96% ================================================================================================================================= * 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. + Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 62 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 ----------------------------------------------------------------------------------------------------------- Six Months Ended 4/30/12 (Consolidated) (unaudited) ----------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 9.66 ----------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.39 Net realized and unrealized gain (loss) on investments and foreign currency transactions 0.16 ----------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.55 Distributions to shareowners: Net investment income (0.44) Net realized gain -- ----------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 0.11 ----------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.77 =========================================================================================================== Total return* 5.91% Ratio of net expenses to average net assets+ 0.81%* Ratio of net investment income to average net assets+ 8.00%* Portfolio turnover rate 32%* Net assets, end of period (in thousands) $1,420,401 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 0.81%* Net investment income 8.00%* Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.81%* Net investment income 8.00%* =========================================================================================================== -------------------------------------------------------------------------------------------------------------------------- Year Ended 10/31/11 Year Ended (Consolidated) 10/31/10 -------------------------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 10.35 $ 9.25 -------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.81 $ 0.86 Net realized and unrealized gain (loss) on investments and foreign currency transactions (0.70) 1.03 -------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.11 $ 1.89 Distributions to shareowners: Net investment income (0.80) (0.79) Net realized gain -- -- -------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.69) $ 1.10 -------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.66 $ 10.35 ========================================================================================================================== Total return* 0.85% 21.35% Ratio of net expenses to average net assets+ 0.74% 0.73% Ratio of net investment income to average net assets+ 7.72% 8.42% Portfolio turnover rate 52% 49% Net assets, end of period (in thousands) $1,364,650 $958,596 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 0.74% 0.73% Net investment income 7.72% 8.42% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.74% 0.73% Net investment income 7.72% 8.42% ========================================================================================================================== ------------------------------------------------------------------------------------------------------------------------------------ Year Ended Year Ended Year Ended 10/31/09 10/31/08 10/31/07 ------------------------------------------------------------------------------------------------------------------------------------ Class Y Net asset value, beginning of period $ 7.46 $ 12.10 $ 12.19 ------------------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income $ 0.94 $ 1.05 $ 0.97 Net realized and unrealized gain (loss) on investments and foreign currency transactions 1.91 (4.48) (0.01) ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 2.85 $ (3.43) $ 0.96 Distributions to shareowners: Net investment income (1.06) (1.10) (0.99) Net realized gain -- (0.11) (0.06) ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 1.79 $ (4.64) $ (0.09) ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 9.25 $ 7.46 $ 12.10 ==================================================================================================================================== Total return* 43.78% (30.96)% 8.12% Ratio of net expenses to average net assets+ 0.78% 0.74% 0.70% Ratio of net investment income to average net assets+ 11.43% 9.82% 8.05% Portfolio turnover rate 33% 25% 31% Net assets, end of period (in thousands) $215,614 $50,477 $23,414 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 0.79% 0.74% 0.70% Net investment income 11.43% 9.82% 8.05% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.78% 0.74% 0.70% Net investment income 11.43% 9.82% 8.05% ==================================================================================================================================== * 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. ** Annualized. + Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 63 Financial Highlights (continued) ----------------------------------------------------------------------------------------------------------- Six Months Ended 4/30/12 (Consolidated) (unaudited) ----------------------------------------------------------------------------------------------------------- Class Z Net asset value, beginning of period $10.11 ----------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.40 Net realized and unrealized gain (loss) on investments and foreign currency transactions 0.18 ----------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.58 Distributions to shareowners: Net investment income (0.46) Net realized gain -- ----------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $(0.46) ----------------------------------------------------------------------------------------------------------- Net asset value, end of period $10.23 =========================================================================================================== Total return* 5.89% Ratio of net expenses to average net assets+ 0.85%* Ratio of net investment income to average net assets+ 7.94%* Portfolio turnover rate 32%* Net assets, end of period (in thousands) $8,031 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 0.85%* Net investment income 7.94%* Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.85%* Net investment income 7.94%* =========================================================================================================== ------------------------------------------------------------------------------------------------------------------------- Year Ended 10/31/11 Year Ended (Consolidated) 10/31/10 ------------------------------------------------------------------------------------------------------------------------- Class Z Net asset value, beginning of period $10.86 $ 9.67 ------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.85 $ 0.87 Net realized and unrealized gain (loss) on investments and foreign currency transactions (0.77) 1.13 ------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.08 $ 2.00 Distributions to shareowners: Net investment income (0.83) (0.81) Net realized gain -- -- ------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $(0.75) $ 1.19 ------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $10.11 $10.86 ========================================================================================================================= Total return* 0.53% 21.58% Ratio of net expenses to average net assets+ 0.76% 0.90% Ratio of net investment income to average net assets+ 7.67% 8.26% Portfolio turnover rate 52% 49% Net assets, end of period (in thousands) $7,580 $7,416 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 0.76% 0.91% Net investment income 7.67% 8.25% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.76% 0.90% Net investment income 7.67% 8.26% ========================================================================================================================= -------------------------------------------------------------------------------------------------------------------------- Year Ended Year Ended 10/31/09 10/31/08 -------------------------------------------------------------------------------------------------------------------------- Class Z Net asset value, beginning of period $ 7.79 $12.31 -------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 1.00 $ 1.07 Net realized and unrealized gain (loss) on investments and foreign currency transactions 1.98 (4.37) -------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 2.98 $(3.30) Distributions to shareowners: Net investment income (1.10) (1.11) Net realized gain -- (0.11) -------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 1.88 $(4.52) -------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.67 $ 7.79 ========================================================================================================================== Total return* 43.69% (29.21)% Ratio of net expenses to average net assets+ 0.90% 0.90% Ratio of net investment income to average net assets+ 11.46% 9.85% Portfolio turnover rate 33% 25% Net assets, end of period (in thousands) $4,283 $2,366 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.23% 1.11% Net investment income 11.13% 9.64% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.90% 0.90% Net investment income 11.46% 9.85% ========================================================================================================================== ----------------------------------------------------------------------------------------------------------- 7/6/07 (a) to 10/31/07 ----------------------------------------------------------------------------------------------------------- Class Z Net asset value, beginning of period $12.65 ----------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.33 Net realized and unrealized gain (loss) on investments and foreign currency transactions (0.35) ----------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $(0.02) Distributions to shareowners: Net investment income (0.32) Net realized gain -- ----------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $(0.34) ----------------------------------------------------------------------------------------------------------- Net asset value, end of period $12.31 =========================================================================================================== Total return* (0.09)%(b) Ratio of net expenses to average net assets+ 0.69%** Ratio of net investment income to average net assets+ 8.30%** Portfolio turnover rate 31%(b) Net assets, end of period (in thousands) $ 97 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 0.69%** Net investment income 8.30%** Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.69%** Net investment income 8.30%** =========================================================================================================== (a) Class Z shares were first publicly offered on July 6, 2007. (b) Not annualized. * 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. ** Annualized. + Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 64 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 Notes to Financial Statements | 4/30/12 (Consolidated) (unaudited) 1. Organization and Significant Accounting Policies Pioneer Global High Yield 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 maximize total return through a combination of income and capital appreciation. The Fund offers five classes of shares designated as Class A, Class B, Class C, Class Y and Class Z shares. Class Y shares were first publicly offered on December 28, 2005. Class Z shares were first publicly offered on July 6, 2007. Effective as of the close of business on December 31, 2009, Class B shares are no longer offered to new or existing shareholders, except that dividends and/or capital gain distributions may continue to be reinvested in Class B shares, and shareholders may exchange their Class B shares for Class B shares of other Pioneer funds, as permitted by existing exchange privileges. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different rates of class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends from net investment income earned by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Each share class has exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. There is no distribution plan for Class Y shares or Class Z shares. Class B shares convert to Class A shares approximately eight years after the date of purchase. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gain or loss on investments during the reporting year. Actual results could differ from those estimates. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 65 The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements, which are consistent with those policies generally accepted in the investment company industry: A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Fund is computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. Senior floating rate loan interests (senior loans) are valued in accordance with guidelines established by the Board of Trustees at the mean between the last available bid and asked prices from one or more brokers or dealers as obtained from Loan Pricing Corporation, an independent pricing service. Senior loans for which no reliable price quotes are available will be valued by Loan Pricing Corporation through the use of pricing matrices to determine valuations. Fixed income securities with remaining maturity of more than sixty days are valued at prices supplied by independent pricing services, which consider such factors as market prices, market events, quotations from one or more brokers, Treasury spreads, yields, maturities and ratings. Valuations may be supplemented by dealers and other sources, as required. Credit default swaps are valued by an independent pricing service based upon valuation models incorporating default probabilities, estimated recovery rates, actual reported transactions, and other available market data. Equity securities that have traded on an exchange are valued at the last sale price on the principal exchange where they are traded. Equity securities that have not traded on the date of valuation, or securities for which sale prices are not available, generally are valued using the mean between the last bid and asked prices. Short-term fixed income securities with remaining maturities of sixty days or less generally are valued at amortized cost. Money market mutual funds are valued at net asset value. Trading in foreign securities is substantially completed each day at various times prior to the close of the NYSE. The values of such securities used in computing the net asset value of the Fund's shares are determined as of such times. Securities or senior loans for which independent pricing services are unable to supply prices or for which market prices and/or quotations are not readily available or are considered to be unreliable are valued using fair value methods pursuant to procedures adopted by the Board of Trustees. 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 from exchange prices. 66 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 At April 30, 2012, four securities were valued using fair value methods (in addition to securities valued using prices supplied by independent pricing services) representing 0.2% of net assets. 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. 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 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. Interest income is recorded on the accrual basis, net of unrecoverable foreign taxes withheld at the applicable country rates. 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. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. B. 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 market price of those securities but are included with the net realized and unrealized gain or loss on investments. C. 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 gains or losses are recorded in the Fund's financial statements. The Fund records realized gains and losses at the time a Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 67 portfolio 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 8). D. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal income tax provision is required. Tax years for the prior three fiscal years remain subject to examination by federal and state tax authorities. The amounts and characterizations of distributions to shareowners for financial reporting purposes are determined in accordance with federal income tax rules. Therefore, the sources of the Fund's distributions may be shown in the accompanying financial statements as from or in excess of net investment income or as from net realized gain on investment transactions, or as from paid-in capital, depending on the type of book/tax differences that may exist. 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 year ended October 31, 2011 was as follows: -------------------------------------------------------------------------------- 2011 -------------------------------------------------------------------------------- Distributions paid from: Ordinary income $204,322,757 -------------------------------------------------------------------------------- Total $204,322,757 ================================================================================ The following shows the components of distributable earnings on a federal income tax basis at October 31, 2011: -------------------------------------------------------------------------------- 2011 -------------------------------------------------------------------------------- Distributable earnings: Undistributed ordinary income $ 15,829,962 Capital loss carryforward (235,848,362) Dividends payable (2,135,872) Net unrealized loss (171,119,102) -------------------------------------------------------------------------------- Total $(393,273,374) ================================================================================ The difference between book-basis and tax-basis net unrealized loss is attributable to the tax deferral of losses on wash sales, the mark-to-market of foreign currency contracts, adjustments relating to catastrophe bonds, 68 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 credit default swaps, interest accruals on preferred stocks and interest on defaulted bonds. E. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), earned $100,062 in underwriting commissions on the sale of Class A shares during the six months ended April 30, 2012. F. 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. During the six months ended April 30, 2012, the Fund recognized gains of $610,059 in the settlement of class action lawsuits from several different companies, as reflected on the Statement of Operations. Distribution fees are calculated based on the average daily net asset value attributable to Class A, Class B and Class C shares of the Fund, respectively (see Note 5). Class Y and Class Z shares do not pay distribution fees. All expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services are allocated among the classes of shares based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). The Fund declares as daily dividends substantially all of its net investment income. All dividends are paid on a monthly basis. Short-term capital gain distributions, if any, may be declared with the daily dividends. Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner and at the same time, except that net investment income dividends to Class A, Class B, Class C, Class Y and Class Z shares can reflect different transfer agent and distribution expense rates. G. Risks At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making the Fund more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. The Fund's 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 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 69 Fund's prospectus contains unaudited information regarding the Fund's principal risks. Please refer to that document when considering the Fund's principal risks. The Fund invests in 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. H. Repurchase Agreements With respect to repurchase agreements entered into by the Fund, the value of the underlying securities (collateral), including accrued interest, is required to be equal to or in excess of the repurchase price. The collateral for all repurchase agreements is held in safekeeping in the customer-only account of the Fund's custodian or a subcustodian of the Fund. The Fund's investment adviser, Pioneer Investment Management, Inc. (PIM), is responsible for determining that the value of the collateral remains at least equal to the repurchase price. I. Securities Lending The Fund may lend securities in its portfolio to certain broker-dealers or other institutional investors. When entering into a securities loan transaction, the Fund typically receives cash collateral from the borrower equal to at least the value of the securities loaned, which is invested in temporary investments. Credit Suisse AG, New York Branch, as the Fund's securities lending agent, manages the Fund's securities lending collateral. The income earned on the investment of collateral is shared with the borrower and the lending agent in payment of any rebate due to the borrower with respect to the securities loan, and in compensation for the lending agent's services to the Fund. The Fund also continues to receive payments in lieu of dividends or interest on the securities loaned. Gain or loss on the value of the loaned securities that may occur during the term of the loan will be for the account of the Fund. The amount of the collateral is required to be adjusted daily to reflect any price fluctuation in the value of the loaned securities. If the required market value of the collateral is less than the value of the loaned securities, the borrower is required to deliver additional collateral for the account of the Fund prior to the close of business on that day. The Fund has the right, under the lending agreement, to terminate the loan and recover the securities from the borrower with prior notice. The Fund is required to return the cash collateral to the borrower and could suffer a loss if the value of the collateral, as invested, has declined. There were no securities on loan at April 30, 2012. 70 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 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 buy or sell credit default swap contracts to increase the Fund's income, to add leverage to the portfolio or to hedge the risk of default on portfolio securities. 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, one party, 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 received by the Fund, as the protection seller, is recorded as a liability in the Fund's records. An upfront payment made by the Fund, as the protection buyer, is recorded as an asset in the Fund's records. Periodic payments received or paid by the Fund are recorded as realized gains or losses. The 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 gain or loss. 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. 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. During the six months ended April 30, 2012, the Fund opened one credit default swap, with a notional amount of $14,000,000, which was still open at period end. Credit default swap contracts outstanding at period end are listed at the end of the Fund's schedule of investments. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 71 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredit, the Fund's investment adviser, 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% of the excess over $2 billion. For the six months ended April 30, 2012, the effective management fee (excluding waivers and/or assumption of expenses) was equivalent to 0.59% of the average daily net assets. PIM has contractually agreed to limit ordinary operating expenses to the extent required to reduce Fund expenses to 1.10%, 2.00%, 2.00% and 0.90% of the average daily net assets attributable to Class A, Class B, Class C and Class Z shares, respectively. These expense limitations were in effect through March 1, 2012. 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 $244,890 in management fees, administrative costs and certain other reimbursements payable to PIM at April 30, 2012. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimburses PIMSS for out-of-pocket expenses incurred by PIMSS related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the six months ended April 30, 2012, such out-of-pocket expenses by class of shares were as follows: -------------------------------------------------------------------------------- Shareholder Communications: -------------------------------------------------------------------------------- Class A $ 357,658 Class B 25,339 Class C 139,666 Class Y 991,797 Class Z 3,998 -------------------------------------------------------------------------------- Total $1,518,458 ================================================================================ Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $773,156 in transfer agent fees and out-of-pocket reimbursements payable to PIMSS at April 30, 2012. 72 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 4. Basis for Consolidation of the Financial Statements The consolidated financial statements of the Fund include the accounts of the Subsidiary. All intercompany accounts and transactions have been eliminated in consolidation. The Subsidiary, a Delaware corporation, was incorporated on February 10, 2011 and is wholly-owned and controlled by the Fund. It is intended that the Fund will remain the sole shareholder of, and will continue to control, the Subsidiary. The Subsidiary acts as an investment vehicle for the Fund's interest in Blaze Recycling and Metals LLC, Class A Units. As of April 30, 2012, the Subsidiary represented approximately $4,366,543 or approximately 0.2% of the net assets of the Fund. 5. Distribution Plan The Fund has adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A, Class B 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 B and Class C shares. The fee for Class B and 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 B and Class C shares. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $74,578 in distribution fees payable to PFD at April 30, 2012. 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. Class B shares that are redeemed within five years of purchase are subject to a CDSC at declining rates beginning at 4.00%, based on the lower of cost or market value of shares being redeemed. Redemptions of Class C shares within one year 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, 2012, CDSCs in the amount of $37,643 were paid to PFD. 6. Line of Credit Facility The Fund, along with certain other funds in the Pioneer Family of Funds (the Funds), participates in a committed, unsecured revolving line of credit facility. Borrowings are used solely for temporary or emergency purposes. The Fund Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 73 may borrow up to the lesser of the amount available under the facility or the limits set for borrowing by the Fund's prospectus and the 1940 Act. The credit facility in effect until January 20, 2012 was in the amount of $165 million. Under such facility, interest on borrowings was payable at the higher of the London Interbank Offered Rate (LIBOR) on the borrowing date plus 1.25% on an annualized basis or the Federal Funds Rate on the borrowing date plus 1.25% on an annualized basis. The credit facility in effect as of February 15, 2012 is in the amount of $215 million. Under such facility, depending on the type of loan, interest on borrowings is payable at LIBOR plus 0.90% on an annualized basis, or the Alternate Base Rate, which is the greater of (a) the facility's administrative agent's daily announced prime rate on the borrowing date, (b) 2% plus the Federal Funds Rate on the borrowing date and (c) 2% plus the overnight Euro dollar 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, 2012, the Fund had no outstanding borrowings under a credit facility. 7. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS which may result in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the six months ended April 30, 2012, the Fund's expenses were not reduced under such arrangements. 8. Forward Foreign Currency Contracts During the six months ended April 30, 2012, the Fund 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, 2012 was $21,854,586. Open hedges at April 30, 2012 were as follows: ---------------------------------------------------------------------------------------------------------------------- Net Contracts to In Exchange Settlement Unrealized Currency deliver For USD Date Value Gain (Loss) ---------------------------------------------------------------------------------------------------------------------- EUR (Euro) (15,000,000) $(19,964,550) 5/15/12 $(19,855,636) $(19,855,636) EUR (Euro) (4,900,000) (6,474,478) 5/18/12 (6,486,260) (6,486,260) EUR (Euro) 19,964,550 19,964,550 5/15/12 19,964,550 19,964,550 EUR (Euro) 6,474,478 6,474,478 5/18/12 6,474,478 6,474,478 GBP (Pound Sterling) (2,000,000) (3,152,734) 5/14/12 (3,246,326) (3,246,326) GBP (Pound Sterling) 3,152,734 3,152,734 5/14/12 3,152,734 3,152,734 ---------------------------------------------------------------------------------------------------------------------- Total $ 3,539 ====================================================================================================================== 74 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 9. Unfunded Loan Commitments As of April 30, 2012, the fund had unfunded loan commitments of approximately $746,287 (excluding unrealized depreciation on those commitments of $33,583 as of April 30, 2012) which could be extended at the option of the borrower, pursuant to the following loan agreements: ------------------------------------------------------------------------------------------------------- Net Unrealized Loan Shares Cost Value Loss ------------------------------------------------------------------------------------------------------- National Specialty Hospitals, Inc., Delayed Draw Term Loan 746,287 $746,287 $712,704 $(33,583) ------------------------------------------------------------------------------------------------------- Total $(33,583) ======================================================================================================= In addition, the Fund had the following bridge loan commitments outstanding at April 30, 2012: ----------------------------------------------------------------------------------------------------------- Net Unrealized Loan Shares Cost Value Gain ----------------------------------------------------------------------------------------------------------- Molycorp, Inc., Senior Unsecued Bridge Loan 5,762,000 $5,762,000 $5,762,000 $-- ----------------------------------------------------------------------------------------------------------- Total $-- =========================================================================================================== 10. Additional Disclosures about Derivative Instruments and Hedging Activities: Values of derivative instruments as of April 30, 2012 were as follows: ----------------------------------------------------------------------------------------------------- Derivatives Not Accounted for as Hedging Instruments Asset Derivatives 2012 Liabilities Derivatives 2012 Under Accounting ------------------------------ --------------------------------- Standards Codification Balance Sheet Balance Sheet (ASC) 815 Location Value Location Value ----------------------------------------------------------------------------------------------------- Foreign Exchange Contracts Receivables $29,521,762 Payables $29,588,223 Credit Default Swaps Receivables $ 1,442,874 Payables $ 424,450 ----------------------------------------------------------------------------------------------------- Total $30,540,386 $30,012,673 ===================================================================================================== Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 75 The effect of derivative instruments on the Statement of Operations for the six months ended April 30, 2012 was as follows: ------------------------------------------------------------------------------------------------------------- Derivatives Not Change in Accounted for as Realized Gain Unrealized Gain Hedging Instruments or (Loss) or (Loss) on Under Accounting on Derivatives Derivatives Codification Location of Gain or (Loss) On Recognized Recognized (ASC) 815 Derivatives Recognized in Income in Income in Income ------------------------------------------------------------------------------------------------------------- Foreign Exchange Net realized loss on forward foreign Contracts currency contracts $(368,895) Foreign Exchange Change in unrealized loss on forward Contracts foreign currency contracts $64,815 Credit Default Swaps Net realized loss on credit default swaps $(947,611) Credit Default Swaps Change in unrealized loss on credit default swaps $1,204,474 76 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 Approval of Investment Advisory Agreement Pioneer Investment Management, Inc. (PIM) serves as the investment adviser to Pioneer Global High Yield Fund (the Fund) pursuant to an investment advisory agreement between PIM and the Fund. In order for PIM to remain the investment adviser of the Fund, the Trustees of the Fund must determine annually whether to renew the investment advisory agreement for the Fund. The contract review process began in March 2011 as the Trustees of the Fund agreed on, among other things, an overall approach and timeline for the process. In July 2011, the Trustees approved the format of the contract review materials and submitted their formal request to PIM to furnish information necessary to evaluate the terms of the investment advisory agreement. The contract review materials were provided to the Trustees in July 2011 and September 2011. After reviewing and discussing the materials, the Trustees submitted a request for additional information to PIM, and materials were provided in response to this request. Meetings of the Independent Trustees of the Fund were held in July, September, October, and November, 2011 to review and discuss the contract review materials. In addition, the Trustees took into account the information related to the Fund provided to the Trustees at each regularly scheduled meeting. At a meeting held on November 29, 2011, based on their evaluation of the information provided by PIM and third parties, the Trustees of the Fund, including the Independent Trustees voting separately, unanimously approved the renewal of the investment advisory agreement for another year. In considering the renewal of the investment advisory agreement, 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 determining to approve the renewal of the agreement. 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, taking into account the investment objective and strategy of the Fund. The Trustees reviewed the terms of the investment advisory agreement. The Trustees also reviewed PIM's investment approach for the Fund, its research process and its process for trade execution. The Trustees considered the resources of PIM and the personnel of PIM who provide investment management services to the Fund. The Trustees considered the non-investment resources and personnel of PIM involved in PIM's services to the Fund, including PIM's compliance and legal resources and personnel. The Trustees also considered the substantial attention and high priority given by PIM's senior management to the Pioneer fund complex. In addition, the Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 77 Trustees considered PIM's plans to increase resources in its investment management function and other enhancements to PIM's advisory capabilities. 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. The Trustees also considered that, as administrator, PIM is responsible for the administration of the Fund's business and other affairs. The Trustees considered the fees paid to PIM for the provision of administration services. Based on these considerations, the Trustees concluded that the nature, extent and quality of services that had been provided by PIM to the Fund were satisfactory and consistent with the terms of the investment advisory agreement. Performance of the Fund The Trustees considered the performance results of the Fund over various time periods. They reviewed information comparing the Fund's performance with the performance of its peer group of funds as classified by Morningstar, Inc. (Morningstar), an independent provider of investment company data, and with the performance of the Fund's benchmark index. The Trustees considered that the Fund's annualized total return was in the first quintile of its Morningstar category for the one year period ended June 30, 2011, in the fourth quintile of its Morningstar category for the three year period ended June 30, 2011, and in the third quintile of its Morningstar category for the five year period ended June 30, 2011. (In all quintile rankings referred to throughout this disclosure, first quintile is most favorable to the Fund's shareowners. Thus, highest relative performance would be first quintile and lowest relative expenses would also be first quintile.) The Trustees also considered that the Fund's twelve month average gross portfolio yield (using month end 30 day effective yields) exceeded the twelve month average yield of the Fund's benchmark index. The Trustees noted that the Fund's performance was improving. They indicated that they were satisfied with the information presented with respect to the Fund's performance. Management Fee and Expenses 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 Trust Research and Consulting, LLC (Strategic Insight), an independent third party. The Trustees considered that the Fund's management fee for the twelve months ended June 30, 2011 was in the third quintile relative to the management fees 78 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 paid by other funds in its Morningstar peer group for the comparable period. The Trustees noted that the assets of the Fund were currently in excess of the last breakpoint in the Fund's management fee schedule. The Trustees considered information that showed that the current fee schedule for the Fund would remain competitive at higher asset levels. The Trustees considered that the Fund's expense ratio for the twelve months ended June 30, 2011 was in the fifth quintile relative to its Strategic Insight peer group for the comparable period. The Trustees noted that the Fund's expense ratio was seven basis points above the median expense ratio of its peer group. The Trustees also compared the expense ratio of the Fund with the funds in the Fund's Morningstar peer group, which was comprised of a greater number of funds than the Strategic Insight peer group, and noted that the Fund's expense ratio for the twelve months ended June 30, 2011 was in the third quintile relative to its Morningstar category. The Trustees reviewed gross and net management fees charged by PIM to its institutional and other clients, including publicly offered European funds, 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 to its other clients and considered the differences in management fees and profit margins for PIM's Fund and non-Fund services. In evaluating the fees associated with PIM's client accounts, the Trustees took into account the respective demands, resources and complexity associated with the Fund and 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 the investment advisory agreement with the Fund, PIM performs 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 entrepreneurial risks associated with PIM's management of the Fund and 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 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 realized by PIM and its affiliates 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 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 79 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 funds and fund shareholders. The Trustees noted the breakpoints in the management fee schedule. The Trustees recognize that economies of scale are difficult to identify and quantify, rarely identifiable on a Fund-by-Fund basis, 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 Funds. 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 particularly, for example during the recent difficult periods for financial markets, as the level of services was maintained notwithstanding a significant decline in PIM's fee revenues from the Funds. Accordingly, the Trustees concluded that economies of scale, if any, were being appropriately shared with the Fund. Other Benefits The Trustees considered the other benefits to PIM from its relationship with the Fund. The Trustees considered the character and amount of fees paid by the Fund, other than under the investment advisory 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. The Trustees considered the intangible benefits to PIM by virtue of its relationship with the Fund and the other Pioneer funds. The Trustees concluded that the receipt of these benefits was reasonable in the context of the overall relationship between PIM and the Fund. Conclusion After consideration of the factors described above as well as other factors, the Trustees, including all of the Independent Trustees, concluded that the investment advisory agreement between PIM and the Fund, including the fees payable thereunder, was fair and reasonable and voted to approve the proposed renewal of the investment advisory agreement for the Fund. 80 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 Trustees, Officers and Service Providers Trustees John F. Cogan, Jr., Chairman David R. Bock Mary K. Bush Benjamin M. Friedman Margaret B.W. Graham Daniel K. Kingsbury Thomas J. Perna Marguerite A. Piret Stephen K. West Officers John F. Cogan, Jr., President Daniel K. Kingsbury, Executive Vice President Mark E. Bradley, Treasurer Christopher J. Kelley, Secretary Investment Adviser and Administrator Pioneer Investment Management, Inc. Custodian Brown Brothers Harriman & Co. Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Bingham McCutchen LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at us.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at www.sec.gov. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 81 This page for your notes. 82 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 This page for your notes. Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 83 This page for your notes. 84 Pioneer Global High Yield Fund | Semiannual Report | 4/30/12 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Write to us: -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: us.pioneerinvestments.com This report must be preceded or accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. 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 10(a), 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 accountant's 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 registrant's accountant for services rendered to the registrant, and rendered to the registrant's 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 registrant's audit committee of the board of trustees has considered whether the provision of non-audit services that were rendered to the registrant's investment adviser (not including any subadviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. The Fund's audit committee of the Board of Trustees has considered whether the provision of non-audit services that were rendered to the Affiliates (as defined) that were not pre- approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. Item 5. Audit Committee of Listed Registrants (a) If the registrant is a listed issuer as defined in Rule 10A-3 under the Exchange Act (17 CFR 240.10A-3), state whether or not the registrant has a separately-designated standing audit committee established in accordance with Section 3(a)(58)(A) of the Exchange Act (15 U.S.C. 78c(a)(58)(A)). If the registrant has such a committee, however designated, identify each committee member. If the entire board of directors is acting as the registrants 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 I Investments in securities of unaffiliated issuers as of the close of the reporting period as set forth in 210.12- 12 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 registrants portfolio (Portfolio Manager). Also state each Portfolio Managers 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 registrants equity securities that is registered by the registrant pursuant to Section 12 of the Exchange Act (15 U.S.C. 781). Instruction to paragraph (a). Disclose all purchases covered by this Item, including purchases that do not satisfy the conditions of the safe harbor of Rule 10b-18 under the Exchange Act (17 CFR 240.10b-18), made in the period covered by the report. Provide disclosures covering repurchases made on a monthly basis. For example, if the reporting period began on January 16 and ended on July 15, the chart would show repurchases for the months from January 16 through February 15, February 16 through March 15, March 16 through April 15, April 16 through May 15, May 16 through June 15, and June 16 through July 15. 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 registrants board of directors, where those changes were implemented after the registrant last provided disclosure in response to the requirements of Item 7(d)(2)(ii)(G) 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 registrants board of directors since the registrant last provided disclosure in response to the requirements of Item 7(d)(2)(ii)(G) 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 officer or officers and principal financial officer or officers, or persons performing similar functions, about the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-2(c) under the Act (17 CFR 270.30a-2(c))) based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of the report that includes the disclosure required by this paragraph. The registrant's principal executive officer and principal financial officer have concluded that the registrant's disclosure controls and procedures are effective based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of this report. (b) Disclose whether or not there were significant changes in the registrant's internal controls or in other factors that could significantly affect these controls subsequent to the date of their evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses. 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. File the exhibits listed below as part of this Form. Letter or number the exhibits in the sequence indicated. (a) 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. (b) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2 under the Act (17 CFR 270.30a-2). 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/ John F. Cogan, Jr. John F. Cogan, Jr, President Date June 29, 2012 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/ John F. Cogan, Jr. John F. Cogan, Jr., President Date June 29, 2012 By (Signature and Title)* /s/ Mark Bradley Mark Bradley, Treasurer & Chief Accounting & Financial Officer Date June 29, 2012 * Print the name and title of each signing officer under his or her signature.