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, 2010 through April 30, 2011 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 High Yield Fund -------------------------------------------------------------------------------- Semiannual Report | April 30, 2011 -------------------------------------------------------------------------------- Ticker Symbols: Class A PGHYX Class B PGHBX Class C PGYCX Class Y GHYYX Class Z PGHZX [LOGO] PIONEER Investments(R) visit 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 59 Notes to Financial Statements 68 Approval of Investment Advisory Agreement 80 Trustees, Officers and Service Providers 84 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 1 President's Letter Dear Shareowner, The U.S. economy is moving forward on a slow path to recovery. We believe the theme for the economy in 2011 may be modest but positive growth. The private sector is showing signs of slow but steady improvement, led by higher capital investment, solid exports, improved consumption, and gradually rising demand for consumer auto loans and commercial loans. At the same time, the risks to a steady recovery remain substantial, including the continued delays in the housing sector's recovery, rising oil prices, and the fiscal drag of U.S. federal and state budget cuts. We are concerned about the long-term risk of inflation in an environment of accommodative Fed policy, continued low nominal and "real" interest rates and rising commodity prices. The recovery process may occur more slowly than many would like, and will almost certainly be accompanied by short-term market swings. But our investment professionals are finding good opportunities to invest. Through the first quarter of 2011, although bonds remained popular with investors, we believed there was value in the equity market. In both equity and bond markets, we are finding good opportunities to invest using the same disciplined approach we have used at Pioneer since 1928, which is to focus on identifying undervalued individual securities with the greatest potential for success, carefully weighing risk against reward. Our teams of investment professionals continually 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. 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. For instance, bond markets certainly rewarded investors for most of 2010, even though equity valuations seemed quite reasonable and were inexpensive relative to bonds and compared with historic levels -- conditions which represented potentially good value for long-term 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. 2 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 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 www.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 Trust's historical or future performance are statements of the opinion of the Trust's management 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 | 4/30/11 3 Portfolio Management Discussion | 4/30/11 Helped both by mounting evidence of improving business conditions and by the Federal Reserve Board's (the Fed's) injections of more liquidity into the financial system, higher-yielding investments generated healthy returns over the six months ended April 30, 2011. In the following interview, Andrew Feltus discusses the factors that influenced the performance of Pioneer Global High Yield Fund during the six-month period. Mr. Feltus, senior vice president and portfolio manager at Pioneer, is a member of Pioneer's Fixed-Income team and is responsible for the daily management of the Fund, along with Tracy Wright, vice president and portfolio manager at Pioneer. Q How did the Fund perform during the six months ended April 30, 2011? A Pioneer Global High Yield Fund Class A shares returned 7.72% at net asset value over the six months ended April 30, 2011, while the Fund's benchmarks, the Bank of America Merrill Lynch (BofA ML) High Yield Master II Index and the BofA ML Global High Yield and Emerging Markets Plus Index, returned 6.14% and 4.66%, respectively. During the same period, the average return of the 514 mutual funds in Lipper's High Current Yield Funds category was 6.11%. On April 30, 2011, the 30-day standardized SEC yield of the Fund's Class A shares was 7.12%. Q What was the environment like for investing in high-yield securities during the six months ended April 30, 2011? A It was a good market for higher-yielding, lower-rated securities, and it was propelled by two forces. First, the Fed's second round of quantitative easing, which involved Fed purchases of U.S. Treasury securities in the open market to inject more liquidity into the financial system, provided stimulus for the market. Second, investors saw growing signs that the economy was turning the corner and moving away from the risk of falling again into recession (also known as a "double-dip" recession). Corporate profits continued to climb, while bank lending activity improved, consumer spending increased, and even the jobs market showed progress, although at a moderate pace. Meanwhile, investors saw relatively low default rates in the high-yield bond market as further evidence of the creditworthiness of lower-rated debt. As a consequence, the yield differences, or spreads, between high-yield bonds compared with Treasuries continued to contract, and high-yield bonds outperformed other fixed-income securities. Consistent with the overall trend favoring higher-risk securities, lower-rated credits outperformed high-rated securities within the high-yield universe. 4 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 Q What were your principal investment strategies for the Fund over the six months ended April 30, 2011, and how did they affect the Fund's performance? A We continued to focus on high-yield corporate bonds, especially the debt of U.S. corporations. For example, on April 30, 2011, the end of the six-month period, nearly 62% of the Fund's assets were invested in U.S. high-yield debt. The emphasis on high-yield corporates helped the Fund's performance, especially because security selection among the high-yield investments was quite good, as we took advantage of Pioneer's emphasis on fundamental analysis of high-yield debt. However, an underweighting of lower-rated high-yield bonds, such as CCC-rated securities, tended to hold back the Fund's results when they outperformed during the period. The Fund was underweighted in emerging markets debt relative to the BofA ML Global High Yield and Emerging Markets Plus Index, and the underexposure helped relative performance, as the emerging markets sector turned in a negative overall performance during the six-month period. However, among the Fund's holdings in the emerging markets, we emphasized corporate securities rather than sovereign debt, and that positioning, in addition to the Fund's exposure to emerging markets currencies, such as those of Brazil and Colombia, had a positive influence on relative performance. As of April 30, 2011, nearly 27% of the Fund's investments were in emerging markets debt. The Fund's exposure to foreign currencies helped performance relative to many traditional domestic high-yield strategies. As of April 30, 2011, roughly 8.25% of the Fund's portfolio was invested in securities denominated in foreign currencies. In general, the U.S. dollar declined in value relative to foreign currencies, partly as a result of the lower interest rates in the United States and partly because of mounting concerns about the country's growing national debt. During the six months ended April 30, 2011, we increased the Fund's investments in floating-rate bank loans, which accounted for just over 9% of invested assets at the end of the period. The floating-rate bank loans exposure held back the Fund's performance, as floating-rate securities underperformed due to declining interest rates. The Fund had a small position in catastrophe-linked bonds, which are securities sold by property-and-casualty reinsurance companies to spread out the risks associated with property claims from large national disasters. The March 2011 earthquake and resulting tsunami in Japan caused the entire catastrophe-linked group to decline in value. Moreover, the Fund also had a very small investment in a catastrophe-linked bond issued by Muteki, which had direct exposure to the damage in Japan. The bond plummeted in value after the disaster in Japan. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 5 At the end of the period, 1.5% of the Fund's assets were invested in catastrophe-linked bonds. The Fund's small out-of-index exposures to asset-backed bonds and municipal bonds also held back performance results during the six-month period, although not significantly. The investments in asset-backed bonds performed positively during the period, even though they proved to be a drag on benchmark-relative performance. During the six-month period, we added investments in higher-yielding municipal bonds when we saw good values following a decline in the overall prices of municipals. We were attracted to municipals by their low prices and the fact that they offered tax-advantaged yields comparable to the yields of bonds in the taxable sector. As of April 30, 2011, about 3.4% of the Fund's portfolio was invested in municipal securities. All of the Fund's municipal holdings were backed by specific revenue sources, such as industrial developments (revenue bonds), rather than by general state or municipal tax receipts (general obligation bonds). While the investments in municipal bonds held back the Fund's benchmark-relative performance during the six-month period, they still generated positive results overall. Q Did the Fund invest in any derivative securities during the six months ended April 30, 2011, and if so, did they affect performance? A We did invest the Fund in currency forward contracts to reduce the volatility associated with investments in foreign currencies. While these investments did reduce volatility during the six months ended April 30, 2011, they did prove to be a minor drag on the Fund's total return when the euro gained in value relative to the U.S. dollar. Q What were some of the individual investments that affected the Fund's performance, either positively or negatively, during the six months ended April 30, 2011? A Security selection was positive for the Fund overall, especially individual investments in convertible securities, which received a boost in performance as the equity markets rallied and prices of convertible securities moved in sympathy with stocks. In fact, four of the top-performing Fund holdings for the six-month period were convertible securities. They included the convertible debt of WESCO International, a distributor of electrical industrial products; Sino Forest, a Chinese paper products corporation; Cubist Pharmaceuticals, which specializes in drugs treating infectious diseases; and Ford Motor, the U.S. automotive corporation. Another convertible security that helped the Fund's performance was the debt of Massey Energy, which appreciated in value when the company was acquired. Several high-yield bond investments also added to the Fund's performance results when their issuing companies were acquired by other corporations, including debt of 6 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 Frac Tech Service, Terremark Worldwide and Global Crossing. Other investments that helped boost performance were asset-backed securities issued by Dunkin Donuts, and the corporate bonds of INEOS and Ono Finance. The latter two investments were denominated in the euro and gained in value as the currency appreciated. We did have a few disappointments in the Fund's portfolio, however, including the Muteki catastrophe-linked bond mentioned earlier. Other investments that proved to be a drag on results included bonds of Blaze Recycling, a metals recycling specialist; CEDC Finance Corporation International, a U.S.-based liquor distributor in Eastern Europe; Alliance One, a tobacco processor; and Horizon Lines, a shipping company. The only Fund investment that actually defaulted during the six-month period was the debt of Blaze Recycling, which eventually was converted into equity. Q What is your investment outlook? A We think that high-yield bonds should be able to maintain their outperformance of other fixed-income sectors as the current economic expansion persists and corporate profits continue to grow. However, we feel that investors should not expect a repeat of the strong absolute returns high-yield bonds have generated over the past 18 months. Investors also should be mindful that Treasury interest rates eventually could start to rise and that the trend will erode the performance of fixed-income securities generally, although we believe high-yield bonds still have the potential to outperform. Please refer to the Schedule of Investments on pages 18-58 for a full listing of Fund securities. 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 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. The Fund can invest in a limited number of securities and, as a result, the Fund's performance may be more volatile than the performance of other funds holding more securities. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 7 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 the opinion of Fund management 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 | 4/30/11 Portfolio Summary | 4/30/11 Portfolio Diversification -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [The following data was represented as a pie chart in the printed material] Corporate Bonds 70.4% Senior Secured Loans 6.8% Temporary Cash Investments 6.3% Convertible Corporate Bonds 5.6% Municipal Bonds 3.3% Asset Backed Securities 3.1% Collateralized Mortgage Obligations 1.8% Foreign Government Bonds 1.5% U.S. Common Stocks 0.7% Preferred Stocks 0.3% Depositary Receipts for International Stocks 0.1% U.S. Government Agency Obligation 0.1% 10 Largest Holdings -------------------------------------------------------------------------------- (As a percentage of total long-term holdings)* 1. Minerva Overseas II, 10.875%, 11/15/19 (144A) 0.88% 2. WESCO International, Inc., 6.0%, 9/15/29 0.84 3. Ford Motor Co., 4.25%, 11/15/16 0.74 4. Marfrig Overseas, Ltd., 9.5%, 5/4/20 (144A) 0.71 5. DynCorp International, Inc., 10.375%, 7/1/17 0.68 6. True Move Co., Ltd., 10.75%, 12/16/13 (144A) 0.66 7. Ineos Group Holdings Plc, 7.875%, 2/15/16 (144A) 0.65 8. Foresight Energy LLC, 9.625%, 8/15/17 (144A) 0.65 9. Energisa SA, 9.5%, 1/29/49 0.62 10. Alliance One International, Inc., 10.0%, 7/15/16 0.60 * 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 | 4/30/11 9 Prices and Distributions | 4/30/11 Net Asset Value per Share -------------------------------------------------------------------------------- -------------------------------------------- Class 4/30/11 10/31/10 -------------------------------------------- A $ 10.94 $ 10.53 -------------------------------------------- B $ 10.94 $ 10.53 -------------------------------------------- C $ 10.90 $ 10.49 -------------------------------------------- Y $ 10.75 $ 10.35 -------------------------------------------- Z $ 11.29 $ 10.86 -------------------------------------------- Distributions per Share: 11/1/10-4/30/11 -------------------------------------------------------------------------------- --------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains --------------------------------------------------------------------- A $ 0.3877 $ -- $ -- --------------------------------------------------------------------- B $ 0.3445 $ -- $ -- --------------------------------------------------------------------- C $ 0.3501 $ -- $ -- --------------------------------------------------------------------- Y $ 0.4027 $ -- $ -- --------------------------------------------------------------------- Z $ 0.4153 $ -- $ -- --------------------------------------------------------------------- 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 and Value of $5 million Investment" charts appearing on pages 11-15. 10 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 Performance Update | 4/30/11 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) Global 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, 2011) ------------------------------------------------------------- Net Asset Public Offering Period Value (NAV) Price (POP) ------------------------------------------------------------- Life-of-Class (8/27/01) 10.96% 10.43% 5 Years 7.80 6.80 1 Year 15.27 10.10 ------------------------------------------------------------- ------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2011) ------------------------------------------------------------- Gross Net ------------------------------------------------------------- 1.15% 1.10% ------------------------------------------------------------- [The following data was represented as a mountain chart in the printed material] Value of $10,000 Investment BofA ML BofA ML Global Pioneer Global High Yield and Global High High Yield Emerging Markets Yield Fund Master II Index Plus Index ---------- --------------- ---------- 8/31/2001 $9,550 $10,000 $10,000 4/30/2002 $10,163 $10,157 $10,198 4/30/2003 $12,102 $11,601 $10,974 4/30/2004 $14,238 $13,332 $12,591 4/30/2005 $16,148 $14,714 $13,406 4/30/2006 $18,021 $16,192 $14,621 4/30/2007 $20,478 $18,298 $16,436 4/30/2008 $19,860 $18,615 $16,300 4/30/2009 $14,069 $15,967 $13,906 4/30/2010 $22,757 $22,394 $20,053 4/30/2011 $26,232 $25,398 $22,735 Call 1-800-225-6292 or visit www.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 net expense ratio reflects contractual expense limitations currently in effect through 3/1/12 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. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 11 Performance Update | 4/30/11 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) Global 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, 2011) ------------------------------------------------------------- If If Period Held Redeemed ------------------------------------------------------------- Life-of-Class (11/21/03) 8.24% 8.24% 5 Years 6.95 6.95 1 Year 14.45 10.45 ------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2011) ------------------------------------------------------------- Gross Net ------------------------------------------------------------- 1.92% 1.92% ------------------------------------------------------------- [The following data was represented as a mountain chart in the printed material] Value of $10,000 Investment BofA ML BofA ML Global Pioneer Global High Yield and Global High High Yield Emerging Markets Yield Fund Master II Index Plus Index ---------- --------------- ---------- 11/30/2003 $10,000 $10,000 $10,000 4/30/2004 $10,277 $10,322 $10,396 4/30/2005 $11,563 $11,391 $11,069 4/30/2006 $12,811 $12,536 $12,072 4/30/2007 $14,430 $14,166 $13,571 4/30/2008 $13,879 $14,411 $13,458 4/30/2009 $9,745 $12,361 $11,481 4/30/2010 $15,660 $17,337 $16,557 4/30/2011 $17,923 $19,663 $18,772 Call 1-800-225-6292 or visit www.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 www.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 net expense ratio reflects contractual expense limitations currently in effect through 3/1/12 for Class B 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 taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 12 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 Performance Update | 4/30/11 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) Global 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, 2011) ------------------------------------------------------------- If If Period Held Redeemed ------------------------------------------------------------- Life-of-Class (11/21/03) 8.19% 8.19% 5 Years 7.01 7.01 1 Year 14.50 14.50 ------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2011) ------------------------------------------------------------- Gross Net ------------------------------------------------------------- 1.82% 1.82% ------------------------------------------------------------- [The following data was represented as a mountain chart in the printed material] Value of $10,000 Investment BofA ML BofA ML Global Pioneer Global High Yield and Global High High Yield Emerging Markets Yield Fund Master II Index Plus Index ---------- --------------- ---------- 11/30/2003 $10,000 $10,000 $10,000 4/30/2004 $10,211 $10,322 $10,396 4/30/2005 $11,487 $11,391 $11,069 4/30/2006 $12,724 $12,536 $12,072 4/30/2007 $14,343 $14,166 $13,571 4/30/2008 $13,810 $14,411 $13,458 4/30/2009 $9,699 $12,361 $11,481 4/30/2010 $15,592 $17,337 $16,557 4/30/2011 $17,853 $19,663 $18,772 Call 1-800-225-6292 or visit www.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 net expense ratio reflects contractual expense limitations currently in effect through 3/1/12 for Class C shares. There can be no assurance that Pioneer will extend the expense limitations beyond such time. Please see the prospectus 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 | 4/30/11 13 Performance Update | 4/30/11 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) Global 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, 2011) ------------------------------------------------------------- If If Period Held Redeemed ------------------------------------------------------------- Life-of-Class (8/27/01) 10.95% 10.95% 5 Years 8.17 8.17 1 Year 15.42 15.42 ------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2011) ------------------------------------------------------------- Gross Net ------------------------------------------------------------- 0.73% 0.73% ------------------------------------------------------------- [The following data was represented as a mountain chart in the printed material] Value of $5 Million Investment BofA ML BofA ML Global Pioneer Global High Yield and Global High High Yield Emerging Markets Yield Fund Master II Index Plus Index ---------- --------------- ---------- 8/31/2001 $5,000,000 $5,000,000 $5,000,000 4/30/2002 $5,321,689 $5,078,451 $5,099,187 4/30/2003 $6,336,876 $5,800,388 $5,486,921 4/30/2004 $7,455,037 $6,666,235 $6,295,632 4/30/2005 $8,455,462 $7,356,993 $6,702,939 4/30/2006 $9,273,435 $8,096,111 $7,310,627 4/30/2007 $10,571,854 $9,149,031 $8,218,063 4/30/2008 $10,314,673 $9,307,316 $8,150,044 4/30/2009 $7,343,406 $7,983,255 $6,952,847 4/30/2010 $11,896,374 $11,196,830 $10,026,281 4/30/2011 $13,730,689 $12,698,956 $11,367,668 Call 1-800-225-6292 or visit www.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 | 4/30/11 Performance Update | 4/30/11 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) Global 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, 2011) ------------------------------------------------------------- If If Period Held Redeemed ------------------------------------------------------------- Life-of-Class (8/27/01) 11.33% 11.33% 5 Years 8.50 8.50 1 Year 15.73 15.73 ------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2011) ------------------------------------------------------------- Gross Net ------------------------------------------------------------- 0.91% 0.90% ------------------------------------------------------------- [The following data was represented as a mountain chart in the printed material] Value of $10,000 Investment BofA ML BofA ML Global Pioneer Global High Yield and Global High High Yield Emerging Markets Yield Fund Master II Index Plus Index ---------- --------------- ---------- 8/31/2001 $10,000 $10,000 $10,000 4/30/2002 $10,643 $10,157 $10,198 4/30/2003 $12,674 $11,601 $10,974 4/30/2004 $14,910 $13,332 $12,591 4/30/2005 $16,911 $14,714 $13,406 4/30/2006 $18,872 $16,192 $14,621 4/30/2007 $21,329 $18,298 $16,436 4/30/2008 $20,875 $18,615 $16,300 4/30/2009 $15,151 $15,967 $13,906 4/30/2010 $24,518 $22,394 $20,053 4/30/2011 $28,375 $25,398 $22,735 Call 1-800-225-6292 or visit www.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 net expense ratio reflects contractual expense limitations currently in effect through 3/1/12 for Class Z 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 High Yield Fund | Semiannual Report | 4/30/11 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, 2010 through April 30, 2011. --------------------------------------------------------------------------------------------------------- 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 11/1/10 --------------------------------------------------------------------------------------------------------- Ending Account Value $ 1,077.20 $ 1,072.90 $ 1,073.70 $ 1,079.10 $ 1,079.30 (after expenses) on 4/30/11 --------------------------------------------------------------------------------------------------------- Expenses Paid $ 5.41 $ 9.61 $ 9.00 $ 3.76 $ 3.61 During Period* --------------------------------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.05%, 1.87%, 1.75%, 0.73%, and 0.70% for Class A, B, C, Y and Z shares, respectively, multiplied by the average account value over the period, multiplied by 181/365 (to reflect the partial year period). 16 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 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, 2010 through April 30, 2011. --------------------------------------------------------------------------------------------------------- Share Class A B C Y Z --------------------------------------------------------------------------------------------------------- Beginning Account Value $ 1,000.00 $ 1,000.00 $ 1,000.00 $ 1,000.00 $ 1,000.00 on 11/1/10 --------------------------------------------------------------------------------------------------------- Ending Account Value $ 1,019.59 $ 1,015.52 $ 1,016.12 $ 1,021.17 $ 1,021.32 (after expenses) on 4/30/11 --------------------------------------------------------------------------------------------------------- Expenses Paid $ 5.26 $ 9.35 $ 8.75 $ 3.66 $ 3.51 During Period* --------------------------------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.05%, 1.87%, 1.75%, 0.73%, and 0.70% for Class A, B, C, Y and Z shares, respectively, multiplied by the average account value over the period, multiplied by 181/365 (to reflect the partial year period). Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 17 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) ------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ------------------------------------------------------------------------------------------------- CONVERTIBLE CORPORATE BONDS -- 5.7% ENERGY -- 0.5% Coal & Consumable Fuels -- 0.4% 11,070,000 BB-/NR Massey Energy Co., 3.25%, 8/1/15 $ 12,467,588 ------------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 0.1% 1,885,000 BB+/Ba3 Chesapeake Energy Co., 2.5%, 5/15/37 (b) $ 2,066,431 -------------- Total Energy $ 14,534,019 ------------------------------------------------------------------------------------------------- MATERIALS -- 1.5% Construction Materials -- 0.4% 11,050,000 NR/NR Cemex SAB de CV, 3.75%, 3/15/18 $ 11,174,313 1,950,000 B/B2 Cemex SAB de CV, 4.875%, 3/15/15 1,954,875 -------------- $ 13,129,188 ------------------------------------------------------------------------------------------------- Forest Products -- 1.1% 12,459,000 BB/NR Sino-Forest Corp., 4.25%, 12/15/16 $ 17,084,404 12,150,000 BB/Ba2 Sino-Forest Corp., 5.0%, 8/1/13 16,478,438 -------------- $ 33,562,842 -------------- Total Materials $ 46,692,030 ------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 1.1% Construction & Farm Machinery & Heavy Trucks -- 0.2% 5,380,000 B/B1 Navistar International Corp., 3.0%, 10/15/14 $ 8,184,325 ------------------------------------------------------------------------------------------------- Electrical Component & Equipment -- 0.1% 1,250,000 B/B2 General Cable Corp., 4.5%, 11/15/29 $ 1,918,750 ------------------------------------------------------------------------------------------------- Trading Companies & Distributors -- 0.8% 10,923,000 B/NR WESCO International, Inc., 6.0%, 9/15/29 $ 25,559,820 -------------- Total Capital Goods $ 35,662,895 ------------------------------------------------------------------------------------------------- TRANSPORTATION -- 0.2% Marine -- 0.2% 9,481,000 CC/Ca Horizon Lines, Inc., 4.25%, 8/15/12 (b) $ 8,094,404 -------------- Total Transportation $ 8,094,404 ------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.7% Automobile Manufacturers -- 0.7% 12,029,000 B+/Ba3 Ford Motor Co., 4.25%, 11/15/16 (b) $ 22,434,085 -------------- Total Automobiles & Components $ 22,434,085 ------------------------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 0.2% Tobacco -- 0.2% 5,135,000 B-/Caa1 Alliance One International, Inc., 5.5%, 7/15/14 $ 5,475,194 -------------- Total Food, Beverage & Tobacco $ 5,475,194 ------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 18 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 ------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ------------------------------------------------------------------------------------------------ HEALTH CARE EQUIPMENT & SERVICES -- 0.1% Health Care Services -- 0.1% 2,203,000 B+/B2 Omnicare Inc., 3.25%, 12/15/35 $ 2,059,805 -------------- Total Health Care Equipment & Services $ 2,059,805 ------------------------------------------------------------------------------------------------ PHARMACEUTICALS & BIOTECHNOLOGY -- 0.3% Biotechnology -- 0.3% 7,600,000 NR/NR Cubist Pharmaceuticals, Inc., 2.5%, 11/1/17 $ 10,146,000 -------------- Total Pharmaceuticals & Biotechnology $ 10,146,000 ------------------------------------------------------------------------------------------------ REAL ESTATE -- 0.1% Real Estate Operating Companies -- 0.1% 1,900,000 B-/B3 Forest City Enterprises Co., 5.0%, 10/15/16 $ 3,056,625 -------------- Total Real Estate $ 3,056,625 ------------------------------------------------------------------------------------------------ SEMICONDUCTORS -- 0.9% 4,650,000 NR/NR JA Solar Holdings Co., 4.5%, 5/15/13 $ 4,458,188 8,850,000 NR/NR Renesola, Ltd., 4.125%, 3/15/18 9,109,659 3,687,000 NR/NR SunPower Corp., 4.75%, 4/15/14 4,074,135 11,919,000 B/NR Suntech Power, 3.0%, 3/15/13 11,114,468 -------------- $ 28,756,450 -------------- Total Semiconductors $ 28,756,450 ------------------------------------------------------------------------------------------------ TELECOMMUNICATION SERVICES -- 0.1% Integrated Telecommunication Services -- 0.1% 2,485,000 B+/B1 MasTec, Inc., 4.0%, 6/15/14 $ 3,948,041 -------------- Total Telecommunication Services $ 3,948,041 ------------------------------------------------------------------------------------------------ TOTAL CONVERTIBLE CORPORATE BONDS (Cost $132,738,975) $ 180,859,548 ------------------------------------------------------------------------------------------------ --------------------------------------------------------------------------------------- Shares --------------------------------------------------------------------------------------- PREFERRED STOCKS -- 0.3% CONSUMER SERVICES -- 0.0% Hotels, Resorts & Cruise Lines -- 0.0% 17,350 Perseus Holding Corp.* $ 433,750 ------------- Total Consumer Services $ 433,750 --------------------------------------------------------------------------------------- BANKS -- 0.0% Diversified Banks -- 0.0% 445 Wells Fargo & Co., 7.5%, 12/31/49 $ 480,369 ------------- Total Banks $ 480,369 --------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 19 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) -------------------------------------------------------------------------------------------- Floating S&P/Moody's Shares Rate (d) Ratings Value -------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.3% Diversified Financial Services -- 0.3% 280,000 GMAC Capital Trust, Inc.* $ 7,268,800 -------------- Total Diversified Financials $ 7,268,800 -------------------------------------------------------------------------------------------- TOTAL PREFERRED STOCKS (Cost $7,467,249) $ 8,182,919 -------------------------------------------------------------------------------------------- COMMON STOCKS -- 0.8% ENERGY -- 0.1% Oil & Gas Drilling -- 0.1% 46,147 Rowan Companies, Inc.* $ 1,924,330 -------------- Total Energy $ 1,924,330 -------------------------------------------------------------------------------------------- MATERIALS -- 0.5% Commodity Chemicals -- 0.0% 55,345 Georgia Gulf Corp.* $ 2,179,486 -------------------------------------------------------------------------------------------- Diversified Metals & Mining -- 0.3% 6,615,974 Blaze Recycling and Metals LLC Class A Units $ 4,565,022 95,846 Freeport-McMoRan Copper & Gold, Inc. (Class B) 5,274,405 -------------- $ 9,839,427 -------------------------------------------------------------------------------------------- Forest Products -- 0.0% 244,090 Ainsworth Lumber Co., Ltd.,* $ 799,788 -------------------------------------------------------------------------------------------- Steel -- 0.2% 127,393 KNIA Holdings, Inc.* $ 890,474 134,106 Vale SA (A.D.R.) 4,009,769 -------------- $ 4,900,243 -------------- Total Materials $ 17,718,944 -------------------------------------------------------------------------------------------- CAPITAL GOODS -- 0.0% Building Products -- 0.0% 894 Panolam Holdings Co.* $ 438,060 -------------- Total Capital Goods $ 438,060 -------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.2% Auto Parts & Equipment -- 0.2% 106,166 Lear Corp. $ 5,429,329 -------------- Total Automobiles & Components $ 5,429,329 -------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.0% Diversified Financial Services -- 0.0% 24,638 BTA Bank JSC* $ 346,755 -------------- Total Diversified Financials $ 346,755 -------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 20 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 -------------------------------------------------------------------------------------------------- Floating S&P/Moody's Shares Rate (d) Ratings Value -------------------------------------------------------------------------------------------------- REAL ESTATE -- 0.0% Real Estate Development -- 0.0% 159,647 Newhall Land Development LLC* $ 247,453 -------------- Total Real Estate $ 247,453 -------------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 0.0% Data Processing & Outsourced Services -- 0.0% 33,046 Perseus Holding Corp.* $ -- -------------- Total Software & Services $ -- -------------------------------------------------------------------------------------------------- TOTAL COMMON STOCKS (Cost $22,377,551) $ 26,104,871 -------------------------------------------------------------------------------------------------- Principal Amount ($) -------------------------------------------------------------------------------------------------- ASSET BACKED SECURITIES -- 3.2% MATERIALS -- 0.1% Aluminum -- 0.1% 805,793 0.84 AAA/Aaa Bayview Financial Acquisition, Floating Rate Note, 8/28/44 $ 780,194 1,500,000 CCC/B3 Security National Mortgage Loan Trust, 6.55%, 4/25/37 1,327,176 -------------- $ 2,107,370 -------------- Total Materials $ 2,107,370 -------------------------------------------------------------------------------------------------- CONSUMER SERVICES -- 0.5% Restaurants -- 0.5% 7,050,000 BBB-/Baa3 Dominos Pizza Master Issuer LLC, 5.261%, 4/25/37 $ 7,155,750 10,075,000 BB/Aaa Dominos Pizza Master Issuer LLC, 7.629%, 4/25/37 10,302,695 -------------- $ 17,458,445 -------------- Total Consumer Services $ 17,458,445 -------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.0% Automobile Manufacturers -- 0.0% 550,000 BB/Ba1 AmeriCredit Automobile Receivables Trust, 6.23%, 7/9/18 $ 567,385 -------------- Total Automobiles & Components $ 567,385 -------------------------------------------------------------------------------------------------- BANKS -- 1.6% Thrifts & Mortgage Finance -- 1.6% 2,837,523 1.16 AA+/Baa2 ACE 2004-HE4 M1, Floating Rate Note, 12/25/34 $ 2,174,405 507,170 0.35 CCC/Caa3 Ace Securities Corp., Floating Rate Note, 1/25/37 192,629 1,446,178 1.53 B-/Caa3 Amortizing Residential Collateral Trust, Floating Rate Note, 1/25/32 576,224 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 21 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value --------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 1,480,000 0.68 CCC/Baa2 Bear Stearns Asset Backed Securities, Inc., Floating Rate Note, 1/25/47 $ 649,273 4,667,167 0.91 A/Caa1 Bear Stearns Asset Backed Securities, Inc., Floating Rate Note, 3/25/35 4,003,594 1,698,156 0.34 CCC/A1 BSABS 2006-4 A1, Floating Rate Note, 10/25/33 1,622,479 8,090,000 0.43 BBB+/Caa2 Carrington Mortgage Loan Trust, Floating Rate Note, 12/25/36 5,660,330 795,225 0.36 AA/Ba3 Carrington Mortgage Loan Trust, Floating Rate Note, 2/25/32 720,890 1,737,814 0.38 AA+/Ba3 Carrington Mortgage Loan Trust, Floating Rate Note, 2/25/35 1,647,912 2,549,023 0.26 AAA/Ba3 Carrington Mortgage Loan Trust, Floating Rate Note, 12/25/36 2,449,641 3,403,990 B/Caa1 Citigroup Mortgage Loan Trust, Inc., 0.32375%, 7/25/45 2,805,310 1,576,667 0.51 AA-/Ba1 Countrywide Asset Backed Certificates, Floating Rate Note, 4/25/36 1,256,716 2,699,311 BBB+/B2 Countrywide Asset-Backed Certificates, 0.50875%, 6/25/36 2,339,258 1,700,000 0.88 BB/Caa1 Countrywide Asset-Backed Certificates, Floating Rate Note, 11/25/34 1,167,028 3,925,000 0.38 BB+/B3 Countrywide Asset-Backed Certificates, Floating Rate Note, 6/25/47 3,639,963 1,520,708 0.42 BB-/Caa2 CWL 2006-19 2A2, Floating Rate Note, 3/25/37 1,137,231 10,998,929 0.71 CCC/Aaa CWL 2007-SD1 A1, Floating Rate Note, 3/25/47 5,513,004 920,299 0.96 AAA/Caa2 FBR Securitization Trust, Floating Rate Note, 10/25/35 581,881 1,288,130 0.39 B-/B3 Gsamp Trust, Floating Rate Note, 1/25/37 1,166,420 4,000,000 BBB/Aaa LEAF II Receivables Funding LLC, 5.5%, 10/20/13 3,668,558 2,996,315 0.35 CCC/Caa3 Lehman XS Trust, Floating Rate Note, 8/25/36 1,529,763 6,527,771 0.61 CC/Ca Lehman XS Trust, Floating Rate Note, 12/25/35 1,950,146 1,499,136 0.33 B/Caa1 Morgan Stanley ABS Corp., Floating Rate Note, 10/25/36 1,349,108 1,476,112 0.37 AAA/Baa2 Residential Asset Mortgage, Products, Inc., Floating Rate Note, 10/25/35 1,326,148 341,463 0.49 B-/Ba2 Residential Asset Securities, Floating Rate Note, 1/25/35 309,300 -------------- $ 49,437,211 -------------- Total Banks $ 49,437,211 --------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 22 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ---------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.9% Diversified Financial Services -- 0.6% 422,531 0.85 B-/Ba3 Aircraft Finance Trust, Floating Rate Note, 5/15/24 $ 392,953 10,182,837 0.83 B-/Caa1 Aircraft Finance Trust, Floating Rate Note, 5/15/24 6,211,531 2,483,285 B/B1 Ellington Loan Acquisition, 1.0625%, 5/27/37 2,302,756 5,377,000 0.34 BBB/B2 Home Equity Asset Trust, Floating Rate Note, 3/25/37 4,434,170 17,704,465 CCC/Ca Long Beach Mortgage Loan Trust, 0.45063%, 3/25/46 6,961,555 -------------- $ 20,302,965 ---------------------------------------------------------------------------------------------------- Specialized Finance -- 0.3% 1,102,000 0.65 CCC+/Caa2 Lease Investment, Floating Rate Note, 7/15/31 $ 716,300 12,652,000 0.61 CCC+/Caa2 Lease Investment, Floating Rate Note, 7/15/31 8,097,280 -------------- $ 8,813,580 -------------- Total Diversified Financials $ 29,116,545 ---------------------------------------------------------------------------------------------------- REAL ESTATE -- 0.1% Mortgage Real Estate Investment Trust -- 0.1% 2,400,000 NR/NR Real Estate Asset Trust, 8.75%, 11/25/48 $ 2,418,240 -------------- Total Real Estate $ 2,418,240 ---------------------------------------------------------------------------------------------------- TOTAL ASSET BACKED SECURITIES (Cost $97,063,940) $ 101,105,196 ---------------------------------------------------------------------------------------------------- COLLATERALIZED MORTGAGE OBLIGATIONS -- 1.8% MATERIALS -- 0.1% Forest Products -- 0.1% 4,315,000 BB/B1 T SRA R 2006-1 F, 7.5296%, 10/15/36 (144A) $ 4,560,189 -------------- Total Materials $ 4,560,189 ---------------------------------------------------------------------------------------------------- BANKS -- 0.7% Thrifts & Mortgage Finance -- 0.7% 17,015,318 2.26 AAA/Aaa Bayview Commercial Asset Trust, Floating Rate Note, 4/25/36 $ 729,957 1,000,000 CCC+/NR Commercial Mortgage Pass Through Certificates, 6.85%, 8/15/33 986,111 1,389,226 B/Caa1 Countrywide Alternative Loan Trust, 5.25%, 8/25/35 1,321,415 2,710,854 B-/Ba1 Countrywide Home Loans, 4.5%, 9/25/35 2,553,354 2,387,205 0.58 CCC/C Countrywide Home Loans, Floating Rate Note, 3/25/35 636,212 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 23 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) -------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value -------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 1,834,451 0.71 D/C DSLA 2005-AR6 2A1C, Floating Rate Note, 10/19/45 $ 188,154 596,629 NR/NR First Horizon Asset Securities, Inc., 5.663817%, 11/25/34 511,719 289,882 0.99 AAA/Baa3 Impac CMB Trust, Floating Rate Note, 4/25/35 231,486 748,901 0.32 D/B3 Impac Securities Assets Corp., Floating Rate Note, 11/25/36 709,613 1,300,000 NR/Baa3 JP Morgan Chase Commercial Mortgage Securities Corp., 5.53853%, 7/12/37 1,054,541 3,005,617 AA/B3 JP Morgan Mortgage Trust, 4.89%, 2/25/35 2,577,443 1,749,985 2.86 NR/B1 JP Morgan Mortgage Trust, Floating Rate Note, 10/25/35 1,342,159 1,265,923 2.99 B+/B1 JP Morgan Mortgage Trust, Floating Rate Note, 11/25/35 1,218,636 3,302,255 0.47 D/C Luminent Mortgage Trust, Floating Rate Note, 7/25/36 126,324 1,873,666 0.57 BBB-/Caa1 Structured Asset Mortgage Investments, Inc., Floating Rate Note, 9/25/45 1,221,226 4,166,802 CCC/NR WaMu Mortgage Pass Through Certificates, 5.56151%, 12/25/36 3,823,220 4,022,332 0.49 AAA/Caa1 WaMu Mortgage Pass-Through Certificates, Floating Rate Note, 4/25/45 3,431,435 -------------- $ 22,663,005 -------------- Total Banks $ 22,663,005 -------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.2% Diversified Financial Services -- 0.1% 1,687,445 NR/B3 Credit Suisse Mortgage Capital Certificates, 5.0%, 4/25/37 $ 1,626,363 -------------------------------------------------------------------------------------------------- Investment Banking & Brokerage -- 0.1% 3,450,000 BBB-/NR Bear Stearns Commercial Mortgage, 6.94%, 2/15/35 $ 3,420,826 -------------- Total Diversified Financials $ 5,047,189 -------------------------------------------------------------------------------------------------- REAL ESTATE -- 0.4% Mortgage Real Estate Investment Trust -- 0.4% 701,892 AAA/B1 American Home Mortgage Investment, 2.45469%, 6/25/45 $ 578,684 3,000,000 BBB-/B2 Credit Suisse First Boston Mortgage, 5.51%, 3/15/35 2,756,917 9,000,000 A/NR Credit Suisse First Boston Mortgage Securities Corp., 7.08%, 12/15/35 8,894,099 The accompanying notes are an integral part of these financial statements. 24 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 -------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value -------------------------------------------------------------------------------------------------- Mortgage Real Estate Investment Trust -- (continued) 2,557,494 BB/Caa1 Deutsche ALT-A Securities, Inc., 5.5%, 11/25/35 $ 2,246,498 -------------- $ 14,476,198 -------------- Total Real Estate $ 14,476,198 -------------------------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES -- 0.3% Integrated Telecommunication Services -- 0.3% 9,670,000 NR/B2 Global Tower Partners Acquisition, 7.87%, 5/15/37 $ 9,961,073 -------------- Total Telecommunication Services $ 9,961,073 -------------------------------------------------------------------------------------------------- GOVERNMENT -- 0.1% 992,684 NR/B3 GSR Mortgage Loan Trust, 5.5%, 8/25/21 $ 955,709 830,521 BBB+/NR GSR Mortgage Loan Trust, 5.7199%, 2/25/34 729,131 -------------- $ 1,684,840 -------------- Total Government $ 1,684,840 -------------------------------------------------------------------------------------------------- TOTAL COLLATERALIZED MORTGAGE OBLIGATION (Cost $60,193,323) $ 58,392,494 -------------------------------------------------------------------------------------------------- CORPORATE BONDS -- 72.3% ENERGY -- 11.6% Coal & Consumable Fuels -- 2.3% 15,063,000 BB-/B2 Berau Capital Resources, Ltd., 12.5%, 7/8/15 (144A) $ 17,924,970 12,200,000 BB/Ba3 Bumi Capital Pte, Ltd., 12.0%, 11/10/16 14,396,000 1,240,000 BB/Ba3 Bumi Investment Pte, Ltd., 10.75%, 10/6/17 1,435,300 18,160,000 B/Caa1 Foresight Energy LLC, 9.625%, 8/15/17 (144A) 19,658,200 2,850,000 BB-/B2 International Coal Group, Inc., 9.125%, 4/1/18 (b) 3,227,625 2,706,000 B/B3 Murray Energy Corp., 10.25%, 10/15/15 2,908,950 6,395,000 B/B3 New World Resources BV, 7.375%, 5/15/15 (144A) 9,749,532 2,070,000 B/B2 Penn Virginia Resource Partner LP, 8.25%, 4/15/18 2,214,900 -------------- $ 71,515,477 -------------------------------------------------------------------------------------------------- Integrated Oil & Gas -- 0.1% 2,950,000 BBB/Baa3 Petroleum Co. of Trinidad & Tobago, Ltd., 9.75%, 8/14/19 $ 3,525,250 -------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 25 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ------------------------------------------------------------------------------------------------------- Oil & Gas Drilling -- 2.4% 23,000,000 NR/NR Aker Drilling AS, 11.0%, 2/24/16 $ 4,478,809 8,500,000 NR/NR Aker Drilling AS, 9.53%, 2/24/16 1,655,212 6,772,644 NR/NR DDI Holding AS, 9.3%, 1/19/12 (144A) 6,772,644 1,250,000 B-/Caa1 Hercules Offshore Inc., 10.5%, 10/15/17 1,312,500 9,607,550 NR/NR Norse Energy ASA, 6.5%, 7/14/13 (144A) 8,838,946 13,100,000 NR/NR Ocean Rig UDW, Inc., 9.5%, 4/27/16 13,100,000 13,640,000 B-/B3 Offshore Group Investment, Inc., 11.5%, 8/1/15 15,225,650 2,915,000 B+/B1 Parker Drilling Co., 9.125%, 4/1/18 3,228,363 8,730,000 B/B3 Pioneer Drilling Co., 9.875%, 3/15/18 9,428,400 NOK 17,000,000 11.65 NR/NR Sevan Drilling ASA, Floating Rate Note, 12/7/12 3,371,277 10,880,000 BB-/B2 Trinidad Drilling, Ltd., 7.875%, 1/15/19 11,532,800 -------------- $ 78,944,601 ------------------------------------------------------------------------------------------------------- Oil & Gas Equipment & Services -- 1.9% 3,943,000 B-/Caa1 Aquilex Holdings LLC, 11.125%, 12/15/16 $ 4,076,076 3,745,000 B+/B1 Complete Production Service Co., 8.0%, 12/15/16 3,950,975 1,600,000 0.00 NA/NA DP Producer AS, Floating Rate Note, 12/5/11 (144A) (e) 16,000 17,815,000 B-/B2 Expro Finance Luxembourg SCA, 8.5%, 12/15/16 (b) 17,414,163 1,275,000 BB/B2 Frac Tech Services LLC, 7.125%, 11/15/18 1,357,875 910,944 10.50 NR/NR Nexus ASA, Floating Rate Note, 3/7/12 (e) 911 5,200,000 NR/NR Sevan Marine ASA, 12.0%, 8/10/15 5,564,000 NOK 29,500,000 NR/NR Sevan Marine ASA, 13.25%, 8/10/15 6,026,155 31,500,000 NR/NR Sevan Marine ASA, 14.0%, 12/22/14 6,043,814 10,198,000 3.62 NR/NR Sevan Marine ASA, Floating Rate Note, 5/14/13 (144A) 9,229,190 NOK 32,463,000 11.99 NR/NR Sevan Marine ASA, Floating Rate Note, 10/24/12 (144A) 6,499,727 -------------- $ 60,178,886 ------------------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 4.0% 2,325,000 B/B3 Antero Resources Finance LLC, 9.375%, 12/01/17 $ 2,551,688 2,534,000 B-/B3 Carrizo Oil & Gas, Inc., 8.625%, 10/15/18 2,705,045 2,125,000 B-/Caa1 Chaparral Energy, Inc., 8.25%, 9/1/21 2,247,188 2,750,000 BB+/Ba3 Chesapeake Energy Co., 6.25%, 1/15/17 4,284,334 4,750,000 B/B2 Comstock Resources, Inc., 8.375%, 10/15/17 5,011,250 The accompanying notes are an integral part of these financial statements. 26 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 -------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value -------------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- (continued) 3,540,000 B/B2 Comstock Resources, Inc., 7.75%, 4/1/19 $ 3,637,350 3,715,000 B-/Caa1 Energy Partners, Ltd., 8.25%, 2/15/18 3,687,138 6,035,000 CCC+/Caa1 Goodrich Petroleum Corp., 8.875%, 3/15/19 6,095,350 6,025,000 BB-/B2 Hilcorp Energy, Inc., 9.0%, 6/1/16 (144A) 6,296,125 6,000,000 B/B2 Linn Energy LLC, 8.625%, 4/15/20 (144A) 6,630,000 45,000,000 B-/NR Norwegian Energy Co., AS, 12.9%, 11/20/14 9,097,079 12,000,000 NR/NR Norwegian Energy Corp., 10.25%, 4/27/16 2,308,133 4,755,000 BBB/Baa3 Novatek Finance, Ltd., 6.604%, 2/3/21 5,004,638 2,200,000 B-/Caa1 Oasis Petroleum, Inc., 7.25%, 8/1/11 2,222,000 8,500,000 B+/B3 Petrohawk Energy Corp., 7.25%, 8/15/18 9,031,250 5,000,000 B+/B3 Petrohawk Energy Corp., 7.25%, 8/15/18 (144A) 5,312,500 6,460,000 B/Caa1 Petroquest Energy Co., 10.0%, 9/1/17 6,847,600 7,260,000 BB-/B1 Plains Exploration & Production Co., 7.625%, 4/1/20 7,786,350 3,040,000 BB-/B1 Plains Exploration & Production Co., 8.625%, 10/15/19 3,385,800 2,535,000 BB-/B1 Plains Exploration & Production Co., 10.0%, 3/1/16 2,864,550 4,875,000 B-/B3 Quicksilver Resources, Inc., 7.125%, 4/1/16 4,862,813 3,370,000 B/B2 Quicksilver Resources, Inc., 9.125%, 8/15/19 3,698,575 3,520,000 B/B3 SandRidge Energy, Inc., 7.5%, 3/15/21 3,704,800 2,120,000 B/B3 SandRidge Energy, Inc., 8.75%, 1/15/20 2,332,000 6,015,000 B/B3 SandRidge Energy, Inc., 8.0%, 6/1/18 (b) 6,360,863 1,590,000 3.92 B/B3 SandRidge Energy, Inc., Floating Rate Note, 4/1/14 1,578,528 4,469,000 B/Caa1 Stone Energy Corp., 8.625%, 2/1/17 4,670,105 3,675,000 B/Caa1 Venoco, Inc., 8.875%, 2/15/19 3,688,781 -------------- $ 127,901,833 -------------------------------------------------------------------------------------------------- Oil & Gas Refining & Marketing -- 0.4% 4,049,000 BB/Ba3 Coffeyville Resources LLC, 9.0%, 4/1/15 $ 4,413,410 8,240,000 BB+/Ba1 Tesoro Corp., 9.75%, 6/1/19 9,373,000 -------------- $ 13,786,410 -------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 27 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ---------------------------------------------------------------------------------------------------- Oil & Gas Storage & Transportation -- 0.5% 2,360,000 8.38 BB/Ba1 Enterprise Products Operating Co., Floating Rate Note, 8/1/66 $ 2,563,550 5,030,000 BB/Ba1 Enterprise Products Operating Co., 7.0%, 6/1/67 5,023,713 7,343,000 BB/Ba1 Southern Union Co., 7.2%, 11/1/66 7,214,498 -------------- $ 14,801,761 -------------- Total Energy $ 370,654,218 ---------------------------------------------------------------------------------------------------- MATERIALS -- 11.0% Aluminum -- 0.7% 7,459,624 6.83 CCC+/B2 Noranda Aluminum Acquisition Corp., Floating Rate Note, 5/15/15 $ 7,254,484 13,315,000 B/B2 Novelis, Inc., 8.75%, 12/15/20 14,879,513 -------------- $ 22,133,997 ---------------------------------------------------------------------------------------------------- Commodity Chemicals -- 1.3% 11,343,000 NR/WR Basell Finance Co., 8.1%, 3/15/27 (144A) $ 12,704,160 11,100,000 CCC+/B3 Hexion US Finance Corp., 8.875%, 2/1/18 (144A) 12,043,500 4,755,000 BB-/B1 Nova Chemicals Corp., 8.625%, 11/1/19 (b) 5,462,306 11,320,000 NR/B1 Rain CII Carbon LLC and CII Carbon Corp., 8.0%, 12/1/18 11,886,000 -------------- $ 42,095,966 ---------------------------------------------------------------------------------------------------- Construction Materials -- 1.5% 12,050,000 CCC+/B3 AGY Holding Corp., 11.0%, 11/15/14 $ 11,718,625 2,080,000 B-/NR C10 - EUR Capital SPV, Ltd., BVI, 6.277%, 5/29/49 2,252,929 1,047,000 6.28 B-/BBB- C10 Capital SPV, Ltd., Floating Rate Note, 12/31/49 820,352 3,434,000 6.64 B-/NR C8 Capital SPV, Ltd., Floating Rate Note, 12/31/49 2,674,646 9,406,000 B/NR Cemex Finance LLC, 9.5%, 12/14/16 (144A) (b) 10,017,390 3,750,000 B/NR Cemex SAB de CV, 9.0%, 1/11/18 (b) 3,885,938 3,950,000 BB-/B1 Rearden G Holdings EINS GmbH, 7.875%, 3/30/20 (b) 4,285,750 9,515,000 B/B3 Texas Industries, Inc., 9.25%, 8/15/20 10,252,413 -------------- $ 45,908,043 ---------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 28 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 ----------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ----------------------------------------------------------------------------------------------------- Diversified Chemical -- 1.2% 13,410,000 CCC/Caa2 Ineos Group Holdings Plc, 7.875%, 2/15/16 (144A) $ 19,797,631 9,025,000 CCC/Caa1 Momentive Performance Material, Inc., 9.5%, 1/15/21 14,227,792 3,176,000 B+/B1 TPC Group LLC, 8.25%, 10/1/17 3,414,200 -------------- $ 37,439,623 ----------------------------------------------------------------------------------------------------- Diversified Metals & Mining -- 0.4% 8,725,000 B-/B3 Midwest Vanadium Pty, Ltd., 11.5%, 2/15/18 $ 9,052,188 3,525,000 B-/NR Mirabela Nickel, Ltd., 8.75%, 4/15/18 3,604,313 -------------- $ 12,656,501 ----------------------------------------------------------------------------------------------------- Metal & Glass Containers -- 1.4% 2,420,000 B-/B2 AEP Industries, Inc., 8.25%, 4/15/19 $ 2,480,500 700,000 B-/B3 Ardagh Glass Finance Plc, 8.75%, 2/1/20 (144A) 1,077,575 6,460,000 B-/B3 Ardagh Packaging Finance Plc, 9.25%, 10/15/20 10,196,085 5,000,000 B-/B3 Ardagh Packaging Finance Plc, 9.125%, 10/15/20 5,525,000 6,305,000 CCC+/B3 BWAY Holding Co., 10.0%, 6/15/18 (b) 6,919,738 7,100,000 CCC+/Caa1 BWAY Parent Co., Inc., 10.125%, 11/1/15 7,313,000 4,345,000 BB-/Ba3 Crown Americas LLC/Crown Americas Capital Corp II, 6.25%, 2/1/21 4,464,488 2,900,000 BB-/Ba1 Crown European Holdings SA, 7.125%, 8/15/18 4,453,482 1,450,000 BB+/Ba2 OI European Group BV, 6.75%, 9/15/20 2,175,644 -------------- $ 44,605,512 ----------------------------------------------------------------------------------------------------- Paper Packaging -- 1.5% 2,200,771 NR/NR Bio Pappel SAB de CV, 6.0%, 8/27/16 $ 1,980,694 15,426,044 NR/NR Bio Pappel SAB de CV, 6.0%, 8/27/16 13,883,440 EURO 6,800,000 B/B2 Nordenia Holdings GM, 9.75%, 7/15/17 11,048,019 9,430,000 B/B3 Packaging Dynamics Corp., 8.75%, 2/1/16 9,771,838 10,400,000 B/B3 US Corrugated, Inc., 10.0%, 6/1/13 10,192,000 -------------- $ 46,875,991 ----------------------------------------------------------------------------------------------------- Paper Products -- 1.1% 15,165,000 B/B3 Exopack Holding Corp., 11.25%, 2/1/14 $ 15,657,863 2,745,000 BB/Ba1 Fibria Overseas Finance, Ltd., 6.75%, 3/3/21 2,889,113 15,915,000 BB-/Ba3 Grupo Papelero Scribe SA, 8.875%, 4/7/20 (144A) (b) 15,119,250 -------------- $ 33,666,226 ----------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 29 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) -------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value -------------------------------------------------------------------------------------------------- Precious Metals & Minerals -- 0.0% 500,000 BB-/Ba3 Alrosa Finance SA, 8.875%, 11/17/14 (144A) $ 575,750 -------------------------------------------------------------------------------------------------- Specialty Chemicals -- 0.1% 1,909,000 BB-/B1 Nova Chemicals Corp., 7.875%, 9/15/25 $ 1,925,704 -------------------------------------------------------------------------------------------------- Steel -- 1.8% 12,950,000 CCC+/Caa2 Algoma Acquisition Corp., 9.875%, 6/15/15 (144A) $ 12,059,688 5,300,000 NR/Ba1 China Oriental Group, Ltd., 8.0%, 8/18/15 5,591,500 3,020,000 B+/B2 Evraz Group SA, 9.5%, 4/24/18 (144A) 3,510,750 4,475,000 B+/B3 Ferrexpo Finance Plc, 7.875%, 4/7/16 (b) 4,620,080 4,340,000 B/B3 JMC Steel Group, Inc., 8.25%, 3/15/18 4,546,150 8,100,000 NR/B2 Metinvest BV, 10.25%, 5/20/15 9,112,500 8,750,000 NR/B2 Metinvest BV, 8.75%, 2/14/18 9,384,375 4,890,000 CCC+/Caa1 Ryerson, Inc., 12.0%, 11/1/15 5,281,200 2,505,000 CC/Ca Zlomrex International Finance SA, 8.5%, 2/1/14 (144A) 2,936,271 -------------- $ 57,042,514 -------------- Total Materials $ 344,925,827 -------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 5.4% Aerospace & Defense -- 1.2% 6,800,000 B/B3 ADS Tactical, Inc., 11.0%, 4/1/18 $ 7,038,000 19,238,000 B/B1 DynCorp International, Inc., 10.375%, 7/1/17 (b) 20,584,660 2,885,000 BB/Ba3 Esterline Technologies Corp., 7.0%, 8/1/20 3,079,738 2,600,000 B-/B3 GeoEye, Inc., 8.625%, 10/1/16 2,756,000 2,890,000 B+/Ba3 Huntington Ingalls Industires, Inc., 6.875%, 3/15/18 3,041,725 2,310,000 B+/Ba3 Huntington Ingalls Industries, Inc., 7.125%, 3/15/21 2,431,275 -------------- $ 38,931,398 -------------------------------------------------------------------------------------------------- Building Products -- 0.4% 4,658,000 BB+/Ba3 Building Materials Corp., 7.5%, 3/15/20 $ 4,931,658 3,905,000 BB+/Ba3 Building Materials Corp., 6.75%, 5/1/21 3,958,694 3,271,000 NR/WR Industrias Unidas SA de CV, 11.5%, 11/15/16 (144A) (e) 2,502,315 -------------- $ 11,392,667 -------------------------------------------------------------------------------------------------- Construction & Engineering -- 1.1% 6,900,000 B+/Ba3 Abengoa Finance SAU, 8.875%, 11/1/17 $ 7,003,500 3,350,000 BB-/Ba3 Dycom Investments, Inc., 7.125%, 1/15/21 3,463,063 The accompanying notes are an integral part of these financial statements. 30 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value --------------------------------------------------------------------------------------------------- Construction & Engineering -- (continued) 11,300,000 B+/Ba3 Empresas ICA SAB de CV, 8.9%, 2/4/21 $ 11,752,000 9,175,000 B+/Caa1 New Enterprise Stone & Lime Co., 11.0%, 9/1/18 9,209,406 -------------- $ 31,427,969 --------------------------------------------------------------------------------------------------- Construction & Farm Machinery & Heavy Trucks -- 0.4% 1,075,000 B/B2 Accuride Corp., 9.5%, 8/1/18 $ 1,198,625 3,840,000 B+/Caa1 American Railcar Co., 7.50%, 3/1/14 3,945,600 4,005,000 B-/NR Commercial Vehicle Group, Inc., 7.875%, 4/15/19 4,095,113 4,290,000 B+/B1 Titan International, Inc., 7.875%, 10/1/17 4,611,750 -------------- $ 13,851,088 --------------------------------------------------------------------------------------------------- Electrical Component & Equipment -- 0.4% 10,825,000 B/B3 Coleman Cable, Inc., 9.0%, 2/15/18 $ 11,447,438 1,540,000 B/B3 WireCo WorldGroup, 9.5%, 5/15/17 1,655,500 -------------- $ 13,102,938 --------------------------------------------------------------------------------------------------- Industrial Conglomerates -- 0.3% 2,000,000 BB-/Ba3 Mark IV Europe SCA, 8.875%, 12/15/17 $ 3,130,717 7,800,000 BBB/Baa3 Votorantim Cimentos SA, 7.25%, 4/5/41 7,702,500 -------------- $ 10,833,217 --------------------------------------------------------------------------------------------------- Industrial Machinery -- 1.2% 7,800,000 B+/B1 Altra Holdings, Inc., 8.125%, 12/1/16 $ 8,482,500 5,322,000 NR/WR Indalex Holding, Inc., 11.5%, 2/1/14 (e) 93,135 5,080,000 B/B3 Liberty Tire Recycling LLC, 11.0%, 10/1/16 5,689,600 7,782,000 CCC+/B3 Mueller Water Products, Inc., 7.375%, 6/1/17 7,723,635 14,700,000 B+/Aaa WPE International, Inc., 10.375%, 9/30/20 15,582,000 -------------- $ 37,570,870 --------------------------------------------------------------------------------------------------- Trading Companies & Distributors -- 0.4% 2,325,000 B/B2 Avis Budget Car Rental LLC, 7.75%, 5/15/16 $ 2,400,563 9,940,000 NR/B3 Intcomex, Inc., 13.25%, 12/15/14 10,461,850 1,171,000 B/B1 Wesco Distribution, Inc., 7.5%, 10/15/17 1,209,058 -------------- $ 14,071,471 -------------- Total Capital Goods $ 171,181,618 --------------------------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES -- 0.5% Diversified Support Services -- 0.4% 13,050 NR/Caa1 Msx International, Inc., 12.5%, 4/1/12 (144A) $ 11,223,000 --------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 31 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) ------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ------------------------------------------------------------------------------------------------ Environmental & Facilities Services -- 0.1% 6,510,000 NR/WR Aleris International, Inc., 10.0%, 12/15/16 (e) $ 651 3,022,531 CCC+/Caa2 New Reclamation Group, Inc., 8.125%, 2/1/13 (144A) 4,036,218 -------------- $ 4,036,869 -------------- Total Commercial Services & Supplies $ 15,259,869 ------------------------------------------------------------------------------------------------ TRANSPORTATION -- 2.1% Air Freight & Couriers -- 0.5% 2,275,000 B/B2 AMGH Merger Sub, Inc. 9.25%, 11/1/18 $ 2,451,313 8,811,000 CCC+/Caa1 Ceva Group Plc, 11.5%, 4/1/18 (144A) 9,615,004 2,445,000 CCC+/Caa1 Ceva Group Plc, 11.625%, 10/1/16 2,704,781 -------------- $ 14,771,098 ------------------------------------------------------------------------------------------------ Airlines -- 0.4% 468,619 B/B1 Continental Airlines, Inc., 8.499%, 5/1/11 $ 463,933 11,163,000 B+/Ba3 Gol Finance LLP, 9.25%, 7/20/20 (144A) 11,944,410 1,845,703 BBB+/Baa2 United Air Lines, Inc., 9.75%, 1/15/17 2,099,488 -------------- $ 14,507,831 ------------------------------------------------------------------------------------------------ Airport Services -- 0.3% 4,826,250 B/B2 Aeropuertos Argentina 2000 SA, 10.75%, 12/1/20 $ 5,260,613 5,550,000 B/B2 Aguila 3 SA, 7.875%, 1/31/18 5,674,875 -------------- $ 10,935,488 ------------------------------------------------------------------------------------------------ Railroads -- 0.1% 2,100,000 CCC/Caa3 Florida East Coast Holdings Corp., 10.5%, 8/1/17 $ 2,220,750 ------------------------------------------------------------------------------------------------ Trucking -- 0.8% 7,930,000 NR/Ba2 Inversiones Alsacia SA, 8.0%, 8/18/18 $ 7,590,755 9,515,000 B-/Caa1 Swift Services Holdings, Inc., 10.0%, 11/15/18 10,442,713 6,125,000 B/B3 Syncreon Global Ireland, Ltd., 9.5%, 5/1/18 6,370,000 -------------- $ 24,403,468 -------------- Total Transportation $ 66,838,635 ------------------------------------------------------------------------------------------------ AUTOMOBILES & COMPONENTS -- 1.8% Auto Parts & Equipment -- 1.6% 2,525,000 CCC+/Caa1 Allison Transmission Co., 11.25%, 11/1/15 (144A) $ 2,796,185 1,510,000 BB+/Ba3 Lear Corp., 8.125%, 3/15/20 1,676,100 4,300,000 B+/B1 Pinafore LLC/Pinafore, Inc., 9.0%, 10/1/18 4,697,750 16,550,000 12.00 CCC-/Caa3 Stanadyne Corp., Floating Rate Note, 2/15/15 16,963,750 The accompanying notes are an integral part of these financial statements. 32 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 ----------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ----------------------------------------------------------------------------------------------- Auto Parts & Equipment -- (continued) 4,365,000 CCC/Caa1 Stanadyne Corp., 10.0%, 8/15/14 $ 4,468,669 11,154,000 B+/B1 Tower Automotive Holdings USA LLC, 10.625%, 9/1/17 (b) 12,478,538 4,260,000 CCC+/B3 Uncle Acquisition 2010 Corp., 8.625%, 2/15/19 4,526,250 -------------- $ 47,607,242 ----------------------------------------------------------------------------------------------- Automobile Manufacturers -- 0.2% 5,000,000 B+/B1 Hyva Global BV, 8.625%, 3/24/16 $ 5,175,000 ----------------------------------------------------------------------------------------------- Tires & Rubber -- 0.0% 1,545,000 B+/B1 Goodyear Tire & Rubber Co., 10.5%, 5/15/16 $ 1,749,713 800,000 B+/B1 Goodyear Tire & Rubber Co., 8.25%, 8/15/20 (b) 889,000 -------------- $ 2,638,713 -------------- Total Automobiles & Components $ 55,420,955 ----------------------------------------------------------------------------------------------- CONSUMER DURABLES & APPAREL -- 2.0% Homebuilding -- 0.6% 8,750,000 CCC/Caa2 Beazer Homes USA, Inc., 9.125%, 6/15/18 $ 8,728,125 1,600,000 CCC/Caa2 Beazer Homes USA, Inc., 9.125%, 5/15/19 1,596,000 7,435,000 BB-/Ba3 Desarrolladora Homex SAB de CV, 9.5%, 12/11/19 (144A) 8,308,613 -------------- $ 18,632,738 ----------------------------------------------------------------------------------------------- Housewares & Specialties -- 1.1% 2,400,000 B-/Caa1 Reynolds Group Holdings, Ltd., 8.25%, 2/15/21 $ 2,439,000 6,075,000 B/Caa1 Reynolds Group Issuer, Inc., 9.0%, 4/15/19 6,401,531 7,490,000 B-/Caa1 Reynolds Group Issuer, Inc., 8.5%, 5/15/18 (144A) 7,714,700 11,165,000 CCC+/B3 Yankee Acquisition Corp., 9.75%, 2/15/17 (b) 11,918,638 5,775,000 CCC+/Caa1 YCC Holdings LLC/Yankee Finance, Inc., 10.25%, 2/15/16 5,948,250 -------------- $ 34,422,119 ----------------------------------------------------------------------------------------------- Leisure Products -- 0.2% 5,000,000 B-/B2 Icon Health & Fitness, Inc., 11.875%, 10/15/16 $ 5,206,250 ----------------------------------------------------------------------------------------------- Textiles -- 0.1% 3,670,000 B/B1 Polymer Group, Inc., 7.75%, 2/1/19 $ 3,816,800 -------------- Total Consumer Durables & Apparel $ 62,077,907 ----------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 33 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ------------------------------------------------------------------------------------------------------- CONSUMER SERVICES -- 2.6% Casinos & Gaming -- 1.6% 9,750,000 NR/WR Buffalo Thunder Revenue Authority, 9.375%, 12/15/14 (e) $ 3,558,750 8,025,000 B/B2 Codere Finance SA, 8.25%, 6/15/15 (144A) 12,191,096 2,052,000 B-/NR Little Traverse Bay Bands of Odawa Indians, 9.0%, 8/31/20 1,846,800 8,640,000 8.25 BB/Ba2 Lottomatica S.p.A., Floating Rate Note, 3/31/66 (144A) 13,278,561 5,965,000 NR/WR Mashantucket Pequot Tribe, 8.5%, 11/15/15 (144A) (e) 745,625 EURO 6,335,000 B/B3 Peermont Global, Ltd., 7.75%, 4/30/14 (144A) 8,365,617 4,631,000 B/Caa1 Pinnacle Entertainment, Inc., 8.75%, 5/15/20 (b) 4,978,325 1,850,000 BB-/B1 Scientific Games Corp., 7.875%, 6/15/16 1,942,500 3,500,000 BB-/B1 Scientific Games International Corp., 8.125%, 9/15/18 3,683,750 1,725,000 CCC/Caa2 Shingle Springs Tribal, 9.375%, 6/15/15 (144A) 1,207,500 5,095,000 NR/WR Station Casinos, Inc., 6.625%, 3/15/18 (e) 510 -------------- $ 51,799,034 ------------------------------------------------------------------------------------------------------- Education Services -- 0.1% 4,225,000 B/B2 Cambium Learning Group, Inc., 9.75%, 2/15/17 $ 4,256,688 ------------------------------------------------------------------------------------------------------- Hotels, Resorts & Cruise Lines -- 0.2% 4,977,000 B-/B3 Grupo Posadas SAB de CV, 9.25%, 1/15/15 $ 4,889,903 ------------------------------------------------------------------------------------------------------- Restaurants -- 0.7% 15,915,000 CCC+/Caa1 Burger King Capital Corp., 0.0%, 4/15/19 (b) $ 9,389,850 5,675,000 B-/B3 Burger King Corp., 9.875%, 10/15/18 (b) 6,001,313 6,381,000 CCC+/Caa2 Dunkin Finance Corp., 9.625%, 12/1/18 6,508,620 -------------- $ 21,899,783 -------------- Total Consumer Services $ 82,845,408 ------------------------------------------------------------------------------------------------------- MEDIA -- 3.0% Advertising -- 0.6% 3,800,000 B-/B3 Affinity Group, Inc., 11.5%, 12/1/16 $ 4,018,500 5,549,000 B+/B2 MDC Partners, Inc., 11.0%, 11/1/16 (144A) 6,214,880 10,450,000 B-/Caa2 Sitel LLC/Sitel Finance Corp., 11.5%, 4/1/18 9,849,125 -------------- $ 20,082,505 ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 34 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 ------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ------------------------------------------------------------------------------------------------- Broadcasting -- 2.1% 10,900,000 B+/B2 CCO Holdings LLC/CCO Holdings Capital Corp., 7.0%, 1/15/19 $ 11,417,750 2,680,000 B/B1 Entravision Communications Corp., 8.75%, 8/1/17 2,874,300 5,186,000 B/B1 Hughes Network Systems LLC, 9.5%, 4/15/14 5,341,580 840,000 B/B1 Hughes Network Systems LLC, 9.5%, 4/15/14 865,200 13,065,000 CCC+/Caa3 Intelsat Bermuda, Ltd., 11.5%, 2/4/17 (144A) 14,306,175 3,968,235 CCC+/Caa3 Intelsat Bermuda, Ltd., 11.5%, 2/4/17 4,345,217 9,250,000 B/B2 Nara Cable Funding, Ltd., 8.875%, 12/1/18 14,188,603 1,925,000 CCC+/Caa2 Ono Finance II Plc, 11.125%, 7/15/19 3,106,142 2,285,000 B-/Caa1 Telesat Canada/Telesat LLC, 11.0%, 11/1/15 2,542,063 4,245,000 B-/Caa1 Telesat Canada/Telesat LLC, 12.5%, 11/1/17 5,051,550 2,065,000 B/B2 Ziggo Bond Co., BV, 8.0%, 5/15/18 3,220,976 -------------- $ 67,259,556 ------------------------------------------------------------------------------------------------- Movies & Entertainment -- 0.1% 2,060,000 B-/B3 Regal Entertainment Group, Inc., 9.125%, 8/15/18 $ 2,209,350 ------------------------------------------------------------------------------------------------- Publishing -- 0.2% 6,135,000 B-/Caa1 Interactive Data Corp., 10.25%, 8/1/18 $ 6,844,206 -------------- Total Media $ 96,395,617 ------------------------------------------------------------------------------------------------- RETAILING -- 1.5% Automotive Retail -- 0.0% 1,432,000 B-/Caa1 Sonic Automotive, Inc., 9.0%, 3/15/18 (b) $ 1,539,400 ------------------------------------------------------------------------------------------------- Department Stores -- 0.4% 10,955,000 B/NR Grupo Famsa SAB de CV, 11.0%, 7/20/15 $ 11,886,175 ------------------------------------------------------------------------------------------------- Distributors -- 0.8% 24,137,000 B/B3 Minerva Overseas II, Ltd., 10.875%, 11/15/19 (144A) $ 26,852,413 ------------------------------------------------------------------------------------------------- Internet Retail -- 0.3% 7,415,000 B/B3 Ticketmaster, Inc., 10.75%, 8/1/16 $ 8,110,156 -------------- Total Retailing $ 48,388,144 ------------------------------------------------------------------------------------------------- FOOD & DRUG RETAILING -- 0.3% Food Distributors -- 0.3% 9,421,000 BB-/B2 C&S Group Enterprise LLC, 8.375%, 5/1/17 (144A) (b) $ 9,868,498 -------------- Total Food & Drug Retailing $ 9,868,498 ------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 35 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) -------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value -------------------------------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 3.9% Agricultural Products -- 0.3% 5,000,000 BB/Ba2 Cosan SA Industria E Comercio SA de CV, 8.25%, 2/15/49 $ 5,012,500 4,959,000 B+/B3 Southern States Cooperative, Inc., 11.25%, 5/15/15 5,355,720 -------------- $ 10,368,220 -------------------------------------------------------------------------------------------------------- Brewers -- 0.0% 120,000 BBB+/A3 Cia Brasileira de Bebida SA de CV, 8.75%, 9/15/13 $ 137,100 -------------------------------------------------------------------------------------------------------- Distillers & Vintners -- 0.3% 320,792 NR/NR Belvedere SA, 0.0%, 4/11/14 $ 161,832 EURO 4,171,607 NR/NR Belvedere SA, 7.692%, 4/11/14 (e) 2,228,267 8,112,000 B/B1 CEDC Finance Corp., International, Inc., 9.125%, 12/1/16 (144A) (b) 7,848,360 -------------- $ 10,238,459 -------------------------------------------------------------------------------------------------------- Packaged Foods & Meats -- 2.7% 6,000,000 NR/B1 Bertin, Ltd., 10.25%, 10/5/16 (144A) $ 6,675,000 4,450,000 B-/B3 Blue Merger Sub, Inc., 7.625%, 2/15/19 (b) 4,555,688 12,305,000 NR/B2 Corp Pesquera Inca SAC, 9.0%, 2/10/17 (144A) 12,920,250 7,158,000 NR/B2 Fabrica de Productos Sa de CV, 9.25%, 2/23/17 (144A) 7,082,841 9,500,000 B-/B3 FAGE Dairy Industry, Ltd., 9.875%, 2/1/20 (144A) (b) 9,595,000 2,969,595 NR/NR Independencia International, Ltd., 12.0%, 12/30/16 (144A) (e) 22,272 9,590,000 BB/B1 JBS Finance II, Ltd., 8.25%, 1/29/18 9,949,625 20,248,000 B+/B1 Marfrig Overseas, Ltd., 9.5%, 5/4/20 (144A) 21,462,880 3,783,000 B+/B1 Marfrig Overseas, Ltd., 9.625%, 11/16/16 (144A) 4,066,725 9,885,000 BB-/B3 Pilgrim's Pride Corp., 7.875%, 12/15/18 (b) 9,267,188 -------------- $ 85,597,469 -------------------------------------------------------------------------------------------------------- Tobacco -- 0.6% 17,855,000 B+/B2 Alliance One International, Inc., 10.0%, 7/15/16 $ 18,256,738 -------------- Total Food, Beverage & Tobacco $ 124,597,986 -------------------------------------------------------------------------------------------------------- HOUSEHOLD & PERSONAL PRODUCTS -- 0.2% Personal Products -- 0.2% 5,880,000 B/B2 Revlon Consumer Products Corp., 9.75%, 11/15/15 $ 6,409,200 -------------- Total Household & Personal Products $ 6,409,200 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 36 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 ------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ------------------------------------------------------------------------------------------------ HEALTH CARE EQUIPMENT & SERVICES -- 2.0% Health Care Equipment -- 0.4% 8,850,000 CCC+/Caa2 Accellent, Inc., 10.0%, 11/1/17 $ 8,938,500 2,871,000 B+/B1 Accellent, Inc., 8.375%, 2/1/17 3,075,559 -------------- $ 12,014,059 ------------------------------------------------------------------------------------------------ Health Care Facilities -- 0.3% 4,200,000 B-/B3 Vanguard Health Holding Co., II LLC, 7.75%, 2/1/19 (b) $ 4,368,000 5,835,000 CCC+/Caa1 Vanguard Health Systems, Inc., 0.0%, 2/1/16 3,778,163 -------------- $ 8,146,163 ------------------------------------------------------------------------------------------------ Health Care Services -- 1.0% 6,964,000 B-/Caa1 BioScrip, Inc., 10.25%, 10/1/15 $ 6,964,000 7,903,000 B-/B2 Gentiva Health Services, Inc., 11.5%, 9/1/18 8,969,905 5,975,000 CCC+/Caa1 Surgical Care Affiliates, Inc., 10.0%, 7/15/17 (144A) 6,169,188 10,447,362 CCC+/B3 Surgical Care Affiliates, Inc., 8.875%, 7/15/15 (144A) (PIK) 10,734,664 -------------- $ 32,837,757 ------------------------------------------------------------------------------------------------ Health Care Supplies -- 0.2% 5,550,000 B-/B2 Inverness Medical Innovations, Inc., 7.875%, 2/1/16 $ 5,910,750 ------------------------------------------------------------------------------------------------ Health Care Technology -- 0.1% 3,000,000 B-/B3 MedAssets, Inc., 8.0%, 11/15/18 $ 3,082,500 -------------- Total Health Care Equipment & Services $ 61,991,229 ------------------------------------------------------------------------------------------------ PHARMACEUTICALS & BIOTECHNOLOGY -- 1.3% Biotechnology -- 0.8% 5,750,000 B/Caa1 ConvaTec Healthcare SA, 10.5%, 12/15/18 $ 6,195,625 7,200,000 B/B3 Grifols, Inc., 8.25%, 2/1/18 7,470,000 10,302,000 B+/B3 Lantheus Medical Imaging, Inc., 9.75%, 5/15/17 10,714,080 -------------- $ 24,379,705 ------------------------------------------------------------------------------------------------ Life Sciences Tools & Services -- 0.5% 9,461,554 B/Caa1 Catalent Pharma Solution, Inc., 9.5%, 4/15/17 (144A) $ 9,674,439 6,423,000 B+/B3 PharmaNet Development Group, Inc., 10.875%, 4/15/17 7,097,415 -------------- $ 16,771,854 -------------- Total Pharmaceuticals & Biotechnology $ 41,151,559 ------------------------------------------------------------------------------------------------ The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 37 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) -------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value -------------------------------------------------------------------------------------------------- BANKS -- 2.0% Diversified Banks -- 1.7% 1,200,000 2.21 BB+/Ba1 Alfa Div Payment Rights Finance, Inc., Floating Rate Note, 12/15/11 (144A) $ 1,190,814 6,430,000 NR/NR Asian Development Bank, Ltd., 14.0%, 8/7/12 4,544,544 6,875,000 BB/NR Banco de Credito del Sur, 9.75%, 11/6/69 7,641,851 8,825,000 B/B2 Banco de Galicia y Buenos Aires SA, 8.75%, 5/4/18 8,983,850 4,284,000 NR/Ba1 Banco Industrial SA de CV, 8.5%, 4/27/20 4,541,040 2,870,000 NR/B2 Banco Macro SA, 9.75%, 12/18/36 2,855,650 6,230,000 7.88 NR/Ba2 Banco Macro SA, Floating Rate Note, 6/7/12 4,641,350 3,880,000 NR/B2 Centercredit International, Inc., 8.625%, 1/30/14 (144A) 3,943,244 10,450,000 AAA/NR International Finance Corp., 9.25%, 3/15/13 6,616,737 268,495 B/NR JSC Temirbank, 14.0%, 6/30/22 320,852 2,750,000 9.20 CCC/Caa1 Kazkommerts Finance 2 BV, Floating Rate Note, 11/29/49 2,227,500 1,400,000 B/B2 Kazkommerts International BV, 8.0%, 11/3/15 1,417,500 3,080,000 BBB+/Baa2 Societe Generale SA, 8.75%, 10/29/49 3,249,400 -------------- $ 52,174,332 -------------------------------------------------------------------------------------------------- Regional Banks -- 0.2% 3,165,000 8.50 NR/Ba3 Banco Inter Peru SA de CV, Floating Rate Note, 4/23/70 (144A) $ 3,138,414 2,700,000 BB/Baa3 Capital One Capital, Inc., 10.25%, 8/15/39 2,916,000 -------------- $ 6,054,414 -------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- 0.1% 3,900,000 BB-/Ba1 Alfa Bank OJSC Via Alfa Bond, Inc., 7.875%, 9/25/17 $ 4,124,250 -------------- Total Banks $ 62,352,996 -------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 3.3% Consumer Finance -- 0.5% 10,495,000 NR/NR Tarjeta Naranja SA, 9.0%, 2/1/17 $ 10,819,044 3,030,000 B+/B2 TMX Finance LLC, 13.25%, 7/15/15 (144A) 3,393,600 -------------- $ 14,212,644 -------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 38 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 -------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value -------------------------------------------------------------------------------------------------- Diversified Financial Services -- 1.2% 1,300,000 B-/NR ATLAS VI Capital, Ltd., 11.5694%, 4/7/14 $ 1,844,779 4,410,796 NR/NR BTA Bank JSC, 0.0%, 7/1/20 (144A) 304,345 2,135,047 NR/NR BTA Bank JSC, 10.75%, 7/1/18 (144A) 2,239,131 483,765 NR/NR BTA Bank JSC, 7.2%, 7/1/25 (144A) 328,960 2,000,000 6.66 BB+/NR Caelus Re II, Ltd., Floating Rate Note, 5/24/13 2,003,600 16,410,000 AAA/Aaa European Investment Bank, Ltd., 0.0%, 3/2/15 7,937,710 680,000 AAA/Aaa European Investment Bank, Ltd., 10.0%, 9/10/13 465,864 3,900,000 AAA/Aaa European Investment Bank, Ltd., 14.0%, 7/5/16 3,143,998 1,135,000 BB/NR Ibis Re, Ltd., 11.2775%, 5/10/12 1,169,845 250,000 6.20 B+/NR Ibis Re, Ltd., Floating Rate Note, 5/3/13 (144A) 248,775 1,500,000 6.20 BB/NR Ibis Re, Ltd., Floating Rate Note, 5/3/13 (144A) 1,462,200 800,000 A+/Aa3 JPMorgan Chase & Co., 0.0%, 10/4/17 275,749 5,000,000 BB/NR Lodestone Re, Ltd., 0.0%, 1/8/14 4,917,500 4,000,000 8.37 BB/NR Lodestone Re, Ltd., Floating Rate Note, 5/17/13 (144A) 3,988,800 500,000 6.38 B/NR Mariah Re, Ltd., Floating Rate Note, 1/8/14 494,400 4,000,000 BB-/NR Queen Street II Capital, Ltd., 0.0%, 4/9/14 3,945,600 1,500,000 6.76 BB/NR Residential Reinsurance 2010, Ltd., Floating Rate Note, 6/6/13 (144A) 1,509,300 250,000 13.16 B-/NR Residential Reinsurance 2010, Ltd., Floating Rate Note, 6/6/13 (144A) 251,000 1,750,000 BB-/NR Residential Reinsurance 2010, Ltd., 0.0%, 6/6/13 1,703,450 -------------- $ 38,235,006 -------------------------------------------------------------------------------------------------- Investment Banking & Brokerage -- 0.6% 20,515,000 5.79 BBB-/Baa2 Goldman Sachs Capital Corp., Floating Rate Note, 12/29/49 $ 17,694,188 -------------------------------------------------------------------------------------------------- Multi-Sector Holding -- 0.1% 5,075,000 B/B2 Constellation Enterprises LLC, 10.625%, 2/1/16 $ 5,278,000 -------------------------------------------------------------------------------------------------- Specialized Finance -- 0.9% 6,360,000 BBB/Baa3 Cantor Fitzgerald LP, 7.875%, 10/15/19 $ 6,756,336 1,142,857 BBB-/Baa2 Glencore Finance Europe AG, 8.0%, 2/28/49 1,154,286 9,315,000 B+/B2 National Money Mart Co., 10.375%, 12/15/16 10,386,225 2,915,000 CCC-/Caa3 NCO Group, Inc., 11.875%, 11/15/14 (b) 2,546,981 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 39 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) ----------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ----------------------------------------------------------------------------------------------------- Specialized Finance -- (continued) 9,825,000 7.68 CCC-/Caa2 NCO Group, Inc., Floating Rate Note, 11/15/13 $ 8,719,688 -------------- $ 29,563,516 -------------- Total Diversified Financials $ 104,983,354 ----------------------------------------------------------------------------------------------------- INSURANCE -- 3.2% Insurance Brokers -- 1.4% 11,140,000 CCC/Caa1 Alliant Holdings, Inc., 11.0%, 5/1/15 (144A) $ 11,780,550 11,241,000 CCC+/Caa1 Hub International Holdings, Inc., 10.25%, 6/15/15 (144A) 11,690,640 4,300,000 CCC+/B3 Hub International Holdings, Inc., 9.0%, 12/15/14 (144A) 4,477,375 4,840,000 B-/B3 Towergate Finance Plc, 10.5%, 2/15/19 8,370,960 4,841,000 CCC/Caa1 Usi Holdings Corp., 9.75%, 5/15/15 (144A) 4,962,025 4,532,000 6.68 CCC/B3 Usi Holdings Corp., Floating Rate Note, 11/15/14 4,384,710 -------------- $ 45,666,260 ----------------------------------------------------------------------------------------------------- Life & Health Insurance -- 0.2% 5,230,000 BBB+/Baa3 Prudential Financial, Inc., 8.875%, 6/15/38 $ 6,406,750 ----------------------------------------------------------------------------------------------------- Multi-Line Insurance -- 0.4% 3,570,000 BB/Baa3 Liberty Mutual Group, Inc., 7.0%, 3/15/37 (144A) $ 3,516,450 5,170,000 10.75 BB/Baa3 Liberty Mutual Group, Inc., Floating Rate Note, 6/15/58 (144A) 7,031,200 918,450 BB-/NR Sul America Participacoes SA, 8.625%, 2/15/12 950,596 -------------- $ 11,498,246 ----------------------------------------------------------------------------------------------------- Property & Casualty Insurance -- 0.1% 3,695,000 BB/Ba2 White Mountains Re Group, Ltd., 7.506%, 5/29/49 $ 3,629,783 ----------------------------------------------------------------------------------------------------- Reinsurance -- 1.1% 1,875,000 7.19 BB+/NR Blue Fin, Ltd., Floating Rate Note, 4/10/12 $ 1,848,563 250,000 13.79 BB-/NR Blue Fin, Ltd., Floating Rate Note, 4/16/12 (Cat Bond) (144A) 260,975 1,000,000 8.92 BB/NR Caelus Re, Ltd., Floating Rate Note, 6/7/11 998,300 1,000,000 10.52 BB/NR East Lane Re III, Ltd., Floating Rate Note, 3/16/12 1,005,400 2,700,000 BB+/NR Foundation Re III, Ltd., 0.0%, 2/25/15 2,645,460 2,500,000 5.91 BB+/A2 Foundation Re III, Ltd., Floating Rate Note, 2/3/14 (Cat Bond) 2,469,250 The accompanying notes are an integral part of these financial statements. 40 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 -------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value -------------------------------------------------------------------------------------------------- Reinsurance -- (continued) 2,600,000 12.03 NR/B3 Globecat, Ltd., Floating Rate Note, 1/2/13 (144A) (Cat Bond) $ 2,458,560 375,000 8.78 NR/B1 Globecat, Ltd., Floating Rate Note, 1/2/13 (144A) (Cat Bond) 371,175 1,900,000 1.88 BB+/NR Merna Reinsurance, Ltd., Floating Rate Note, 4/8/13 1,910,640 1,700,000 13.56 B-/NR Montana Re, Ltd., Floating Rate Note, 12/7/12 1,657,160 250,000 12.00 B/NR MultiCat Mexico 2009, Floating Rate Note, 10/19/12 260,425 750,000 12.00 B/NR MultiCat Mexico 2009, Floating Rate Note, 10/19/12 796,725 250,000 10.40 B/NR MultiCat Mexico 2009, Floating Rate Note, 10/19/12 260,650 250,000 12.00 BB-/NR MultiCat Mexico 2009, Floating Rate Note, 10/19/12 257,000 325,000 7.20 NR/C Muteki Ltd., Floating Rate Note, 5/24/11 (Cat Bond) 390 1,800,000 12.25 BB/NR Mystic Re, Ltd., Floating Rate Note, 3/20/12 1,846,620 750,000 10.30 BB-/NR Mystic Re, Ltd., Floating Rate Note, 6/7/11 751,050 500,000 7.07 NR/B1 Nelson Re, Ltd., Floating Rate Note, 6/6/11 499,900 1,400,000 NR/B3 Nelson Re, Ltd., 11.62625%, 6/6/11 1,406,300 1,900,000 14.15 B-/NA Residential Re, Ltd., Floating Rate Note, 6/6/11 1,901,710 250,000 CC/NR Successor X, Ltd., 11.87982%, 4/4/13 (Cat Bond) 236,275 2,100,000 B-/NR Successor X, Ltd., 9.87982%, 4/4/13 (Cat Bond) 2,027,550 1,125,000 14.64 B-/NR Successor X, Ltd., Floating Rate Note, 12/13/13 1,105,088 2,600,000 16.14 NR/NR Successor X, Ltd., Floating Rate Note, 12/13/13 2,515,760 4,000,000 13.00 NR/NR Successor X, Ltd., Floating Rate Note, 2/25/14 3,852,400 -------------- $ 33,343,326 -------------- Total Insurance $ 100,544,365 -------------------------------------------------------------------------------------------------- REAL ESTATE -- 1.2% Diversified Real Estate Activities -- 0.6% 12,900,000 BB-/NR BR Malls International Finance, Ltd., 8.5%, 12/31/99 $ 13,641,750 5,590,000 BB-/NR BR Malls International Finance Finance, Ltd., 9.75%, 12/31/49 (144A) 5,911,425 -------------- $ 19,553,175 -------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 41 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) -------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value -------------------------------------------------------------------------------------------------- Real Estate Operating Companies -- 0.5% 6,750,000 B/B Alto Palermo SA, 7.875%, 5/11/17 (144A) $ 6,629,175 3,722,895 8.07 B/NR Alto Palermo SA, Floating Rate Note, 6/11/12 (144A) 1,619,459 8,405,000 B/NR IRSA Inversiones y Representacion SA, 8.5%, 2/2/17 (144A) (b) 8,362,975 -------------- $ 16,611,609 -------------------------------------------------------------------------------------------------- Specialized Real Estate Investment Trust -- 0.1% 1,650,000 B/B2 Sabra Health Care LP/Sabra Capital Corp., 8.125%, 11/1/18 $ 1,728,375 -------------- Total Real Estate $ 37,893,159 -------------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 1.5% Application Software -- 0.6% 8,684,000 B/B3 Allen Systems Group, Inc., 10.5%, 11/15/16 $ 8,901,100 9,840,000 CCC+/Caa2 Vangent, Inc., 9.625%, 2/15/15 9,901,500 -------------- $ 18,802,600 -------------------------------------------------------------------------------------------------- Data Processing & Outsourced Services -- 0.3% 3,597,000 B-/Caa1 First Data Corp., 12.625%, 1/15/21 $ 3,943,211 3,597,000 B-/Caa1 First Data Corp., 8.25%, 1/15/21 (b) 3,579,015 805,000 B-/Caa1 First Data Corp., 9.875%, 9/24/15 (b) 832,169 -------------- $ 8,354,395 -------------------------------------------------------------------------------------------------- IT Consulting & Other Services -- 0.2% 7,920,000 CCC+/Caa1 Activant Solutions, Inc., 9.5%, 5/1/16 $ 8,325,900 -------------------------------------------------------------------------------------------------- Systems Software -- 0.4% 12,144,117 NR/NR Pegasus Solutions, Inc., 13.0%, 4/15/14 (PIK) $ 11,415,470 -------------- Total Software & Services $ 46,898,365 -------------------------------------------------------------------------------------------------- TECHNOLOGY HARDWARE & EQUIPMENT -- 0.7% Communications Equipment -- 0.2% 7,150,000 B/B3 CommScope, Inc., 8.25%, 1/15/19 $ 7,525,375 -------------------------------------------------------------------------------------------------- Computer Storage & Peripherals -- 0.3% 8,535,000 BB+/Ba1 Seagate HDD Cayman Ltd., 7.75%, 12/15/18 $ 9,047,100 -------------------------------------------------------------------------------------------------- Electronic Equipment & Instruments -- 0.2% 6,496,000 B/B1 Da-Lite Screen Co., Inc., 12.5%, 4/1/15 (144A) $ 7,308,000 -------------- Total Technology Hardware & Equipment $ 23,880,475 -------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 42 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value --------------------------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES -- 7.2% Alternative Carriers -- 1.6% 4,625,000 B-/B2 Cogent Communication Group, Inc., 8.375%, 2/15/18 $ 4,798,438 13,606,000 B/B2 Global Crossing, Ltd., 12.0%, 9/15/15 15,919,020 5,266,000 CCC+/Caa2 Global Crossing, Ltd., 9.0%, 11/15/19 6,450,850 4,000,000 CCC+/Caa1 Paetec Escrow Corp., 9.875%, 12/1/18 4,330,000 11,765,000 B/Ba3 Paetec Holding, Inc., 8.875%, 6/30/17 (144A) 12,838,556 4,500,000 CCC+/Caa1 Paetec Holdings Corp., 9.5%, 7/15/15 (b) 4,725,000 -------------- $ 49,061,864 --------------------------------------------------------------------------------------------------- Integrated Telecommunication Services -- 3.2% 14,000,000 B/NR Bakrie Telecom Tbk PT, 11.5%, 5/7/15 (144A) $ 14,910,000 9,690,000 B-/B3 Broadview Networks Holdings, Inc., 11.375%, 9/1/12 9,544,650 1,360,000 B/B2 Cincinnati Bell, Inc., 7.0%, 2/15/15 1,387,200 12,067,000 B/B2 Cincinnati Bell, Inc., 8.25%, 10/15/17 12,248,005 6,660,000 B/B2 Cincinnati Bell, Inc., 8.375%, 10/15/20 6,676,650 8,478,000 CCC+/B3 Cincinnati Bell, Inc., 8.75%, 3/15/18 (b) 8,138,880 5,440,000 BB/Ba2 Frontier Communications Corp., 8.5%, 4/15/20 5,895,600 12,160,000 BB/Ba2 Frontier Communications Corp., 8.75%, 4/15/22 13,163,200 2,145,000 B-/B3 Global Crossing UK Finance Plc, 10.75%, 12/15/14 2,252,250 6,460,000 B+/B1 Mastec, Inc., 7.625%, 2/1/17 6,605,350 2,650,000 B+/Ba3 Windstream Corp., 7.75%, 10/1/21 (b) 2,802,375 5,000,000 B+/Ba3 Windstream Corp., 7.75%, 10/15/20 (b) 5,300,000 3,040,000 B+/Ba3 Windstream Corp., 7.75%, 10/15/20 (144A) 3,222,400 9,795,000 B+/Ba3 Windstream Corp., 8.125%, 9/1/18 10,554,113 -------------- $ 102,700,673 --------------------------------------------------------------------------------------------------- Wireless Telecommunication Services -- 2.4% 7,850,000 B+/B3 Cricket Communications, Inc., 7.75%, 10/15/20 (b) $ 8,016,813 3,000,000 CCC+/Caa1 Digicel Group, Ltd., 10.5%, 4/15/18 (b) 3,420,000 11,100,000 NR/B1 Digicel, Ltd., 8.25%, 9/1/17 (144A) 11,766,000 4,400,000 B/B2 MetroPCS Wireless, Inc., 7.875%, 9/1/18 (b) 4,741,000 6,650,000 BB/Ba2 MTS International, Inc., 8.625%, 6/22/20 7,573,020 5,425,000 B+/B2 NII Capital Corp., 7.625%, 4/1/21 5,736,938 5,180,000 B+/B1 NII Capital Corp., 10.0%, 8/15/16 5,944,050 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 43 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value --------------------------------------------------------------------------------------------------- Wireless Telecommunication Services -- (continued) 2,300,000 NR/NR Richland Towers Funding LLC/ Seattle Funding, 7.87%, 3/15/16 $ 2,284,820 2,000,000 B-/B2 True Move Co., Ltd., 10.375%, 8/1/14 (144A) 2,165,000 18,455,000 B-/B2 True Move Co., Ltd., 10.75%, 12/16/13 (144A) 20,023,675 3,625,000 BB/Ba3 VIP Finance Ireland, Ltd., 7.748%, 2/2/21 3,824,375 -------------- $ 75,495,691 -------------- Total Telecommunication Services $ 227,258,228 --------------------------------------------------------------------------------------------------- UTILITIES -- 4.0% Electric Utilities -- 1.8% 10,585,000 B-/NR CIA Transporte Energia SA de CV, 8.875%, 12/15/16 (144A) (b) $ 10,373,300 2,640,000 NR/Ba2 Dubai Electricity & Water Authority, 7.375%, 10/21/20 2,633,400 10,845,000 NR/Ba2 Dubai Electricity & Water Authority, 8.5%, 4/22/15 11,875,275 6,156,000 B-/B2 Empresa Distribuidora Y Comercial SA de CV, 9.75%, 10/25/22 6,340,680 17,750,000 NR/Ba2 Energisa SA, 9.5%, 1/29/49 18,726,250 994,605 B+/Ba2 FPL Energy National Wind Funding, Inc., 6.125%, 3/25/19 (144A) 962,031 1,074,740 B+/Ba2 FPL Energy Wind Funding, Inc., 6.876%, 6/27/17 (144A) 1,011,599 4,000,000 CC/Caa3 Texas Competitive Electric Holdings LLC, 15.0%, 4/1/21 (b) 3,540,000 2,695,000 CCC/B2 Texas Competitive Electric Holdings Co., LLC/TCEH Finance, 11.5%, 10/1/20 2,769,113 -------------- $ 58,231,648 --------------------------------------------------------------------------------------------------- Gas Utilities -- 0.5% 3,237,000 B-/B2 Star Gas Partners LP /Star Gas Finance Co., 8.875%, 12/1/17 $ 3,350,295 9,377,000 B/B2 Transportadora De Gas del Sur, 7.875%, 5/14/17 (144A) 9,330,115 -------------- $ 12,680,410 --------------------------------------------------------------------------------------------------- Independent Power Producer & Energy Traders -- 1.4% 6,025,000 B+/B1 Calpine Corp., 7.875%, 7/31/20 $ 6,491,938 16,000,000 NR/B1 Inkia Energy, Ltd., 8.375%, 4/4/21 16,360,000 641,723 NR/Ba1 Juniper Generation, Inc., 6.79%, 12/31/14 (144A) 609,014 5,025,000 BB-/B1 NRG Energy, Inc., 7.625%, 1/15/18 5,276,250 4,300,000 BB-/B1 NRG Energy, Inc., 7.625%, 1/15/18 4,547,250 The accompanying notes are an integral part of these financial statements. 44 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 --------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value --------------------------------------------------------------------------------------------------------- Independent Power Producer & Energy Traders -- (continued) 1,857,000 BB/Ba2 NSG Holdings, Inc., 7.75%, 12/15/25 $ 1,857,000 7,200,000 NR/B2 Star Energy Geothermal, Inc., 11.5%, 2/12/15 (b) 8,324,611 -------------- $ 43,466,063 --------------------------------------------------------------------------------------------------------- Multi-Utilities -- 0.3% 7,732,804 NR/NR Ormat Funding Corp., 8.25%, 12/30/20 $ 7,616,812 -------------- Total Utilities $ 121,994,933 --------------------------------------------------------------------------------------------------------- TOTAL CORPORATE BONDS (Cost $2,183,920,055) $2,283,812,545 --------------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AGENCY OBLIGATION -- 0.1% 23,000,000 1.48 NR/Aaa Government National Mortgage Association, Floating Rate Note, 10/16/52 $ 1,857,183 --------------------------------------------------------------------------------------------------------- TOTAL U.S. GOVERNMENT AGENCY OBLIGATION (Cost $1,809,853) $ 1,857,183 --------------------------------------------------------------------------------------------------------- FOREIGN GOVERNMENT BONDS -- 1.5% BRL 8,200,000 BBB-/Baa3 Brazilian Government, 10.25%, 1/10/28 $ 5,609,180 15,971,000 B/B2 City of Buenos Aires, 12.5%, 4/6/15 (144A) 17,967,375 2,950,000 BBB+/Baa3 Ireland Government Bond, 4.5%, 4/18/20 2,934,825 3,150,000 BBB+/Baa3 Ireland Government Bond, 5.0%, 10/18/20 3,162,493 2,100,000 BBB+/Baa3 Ireland Government Bond, 5.9%, 10/18/19 2,274,592 9,425,000 B/B3 Provincia de Buenos Aires Argentina, 10.875%, 1/26/21 8,941,969 2,600,000 B/NR Provincia de Neuquen Argentina, 7.875%, 4/26/21 2,619,500 COP 6,986,000,000 BBB-/Ba1 Republic of Colombia, 12.0%, 10/22/15 5,059,685 -------------- $ 48,569,619 --------------------------------------------------------------------------------------------------------- TOTAL FOREIGN GOVERNMENT BONDS (Cost $44,415,212) $ 48,569,619 --------------------------------------------------------------------------------------------------------- MUNICIPAL BONDS -- 3.4% COMMERCIAL SERVICES & SUPPLIES -- 0.0% Environmental & Facilities Services -- 0.0% 4,400,000 7.28 D/WR Ohio Air Quality Development, Floating Rate Note, 6/8/22 (e) $ 460,680 -------------- Total Commercial Services & Supplies $ 460,680 --------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 45 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value --------------------------------------------------------------------------------------------------- GOVERNMENT -- 3.4% Municipal Airport -- 0.5% 900,000 NR/NR Greater Orlando Aviation Authority, 6.5%, 11/15/36 $ 811,197 7,845,000 CCC+/B3 Houston Texas Airport Revenue, 6.75%, 7/1/29 7,620,555 15,000 B/B3 New Jersey Economic Development Authority Special Facility Revenue, 7.0%, 11/15/30 14,618 8,140,000 B/B3 New Jersey Economic Development Authority, 6.25%, 9/15/29 7,419,529 -------------- $ 15,865,899 --------------------------------------------------------------------------------------------------- Municipal Development -- 1.6% 3,755,000 CCC+/NR Alliance Airport Authority Texas, 5.25%, 12/1/29 $ 2,455,094 16,590,000 CCC+/NR Alliance Airport Authority Texas, 5.75%, 12/1/29 11,580,981 5,875,000 NR/Ba3 Brunswick & Glynn County Development Authority, 5.55%, 3/1/26 5,382,146 12,000,000 CCC+/NR Dallas-Fort Worth International Airport, 5.5%, 11/1/30 8,081,280 4,150,000 CCC+/Caa2 Dallas-Fort Worth Texas International Airport Revenue, 6.375%, 5/1/35 3,019,623 18,140,000 B+/B1 Port of Corpus Christi Authority of Nueces County, 6.7%, 11/1/30 18,208,206 -------------- $ 48,727,330 --------------------------------------------------------------------------------------------------- Municipal General -- 0.6% 3,545,000 BB/B1 County of Cook Illinois, 6.5%, 10/15/40 $ 3,560,527 9,785,000 BB-/B1 Illinois Finance Authority, 6.5%, 10/15/40 9,827,858 8,875,000 12.00 NR/NR Non-Profit PFD FDG TR I, Floating Rate Note, 9/15/37 5,494,424 -------------- $ 18,882,809 --------------------------------------------------------------------------------------------------- Municipal Pollution -- 0.7% 2,045,000 NR/Ba3 Bedford County Economic Development Authority, 6.3%, 12/1/25 $ 2,000,092 4,550,000 BBB-/NR Butler Industrial Development Board, 5.75, 9/1/28 4,239,736 4,610,000 B/Caa2 Ohio State Pollution Control Revenue, 5.6%, 8/1/32 3,634,616 3,980,000 B/Caa2 Ohio State Pollution Control Revenue, 5.65%, 3/1/33 3,149,772 4,390,000 NR/NR Parish of St James Louisiana, 7.7%, 10/1/22 4,389,737 The accompanying notes are an integral part of these financial statements. 46 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ---------------------------------------------------------------------------------------------------- Municipal Pollution -- (continued) 6,960,000 B/Caa2 Pennsylvania Economic Development Financing Authority, 6.0%, 6/1/31 $ 5,843,546 -------------- $ 23,257,499 -------------- Total Government $ 106,733,537 ---------------------------------------------------------------------------------------------------- TOTAL MUNICIPAL BONDS (Cost $114,330,761) $ 107,194,217 ---------------------------------------------------------------------------------------------------- SENIOR FLOATING RATE LOAN INTERESTS** -- 7.0% ENERGY -- 0.2% Coal & Consumable Fuels -- 0.2% 6,000,000 11.26 NR/NR Bumi Resources Tbk, Term Loan, 8/15/13 $ 6,000,000 ---------------------------------------------------------------------------------------------------- Oil & Gas Equipment And Services -- 0.0% 1,302,448 6.00 NR/NR Aquilex Holdings LLC, Term Loan, 4/1/16 $ 1,306,518 -------------- Total Energy $ 7,306,518 ---------------------------------------------------------------------------------------------------- MATERIALS -- 0.9% Commodity Chemicals -- 0.1% 1,740,638 6.00 NR/B2 CPG International I, Inc., Term Loan, 1/26/17 $ 1,749,341 ---------------------------------------------------------------------------------------------------- Diversified Chemical -- 0.6% 4,644,226 7.50 B/B1 Ineos Group Holdings Plc, Term B1 Facility (new), 12/16/13 $ 7,230,687 5,103,294 8.00 B/B1 Ineos Group Holdings Plc, Term C1 Facility (new), 12/16/14 7,945,418 1,279,116 7.50 NR/NR Ineos U.S. Finance Corp., Term B2 Facility Loan, 12/16/13 1,326,683 1,259,088 8.00 NR/NR Ineos U.S. Finance Corp., Term C2 Facility Loan, 12/16/14 1,305,910 -------------- $ 17,808,698 ---------------------------------------------------------------------------------------------------- Steel -- 0.2% 7,452,959 10.50 NR/NR Niagara Corp., Term Loan (New), 6/29/14 $ 7,415,694 -------------- Total Materials $ 26,973,733 ---------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 0.5% Aerospace & Defense -- 0.5% 3,799,904 5.28 NR/NR DAE Aviation Holdings, Tranche B1 Term Loan, 7/31/14 $ 3,842,653 491,958 3.56 B-/B1 Hunter Defense Technology, Term Loan, 8/22/14 482,119 3,901,850 6.56 BB/B1 Hunter Defense Technologies, Inc., Series 1 New Term Loan, 8/22/14 3,823,813 2,500,000 8.25 B-/Caa2 IAP Worldwide Services, Inc., Term Loan (First Lien), 12/20/12 2,498,438 3,660,578 5.28 NR/NR Standard Aero, Ltd., Tranche B2 Term Loan, 7/31/14 3,701,759 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 47 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) -------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value -------------------------------------------------------------------------------------------------- Aerospace & Defense -- (continued) 498,287 5.50 NR/Ba2 Tasc, Inc., Tranche A Term Loan, 12/18/14 $ 499,222 -------------- $ 14,848,004 -------------------------------------------------------------------------------------------------- Building Products -- 0.0% 500,000 9.00 BB/Ba2 Goodman Group Global Group, Inc., Term Loan (Second Lien), 10/30/17 $ 518,958 398,000 5.75 BB/Ba2 Goodman Group Global Group, Inc., Initial Term Loan (First Lien), 10/29/16 402,103 -------------- $ 921,061 -------------------------------------------------------------------------------------------------- Electrical Component & Equipment -- 0.0% 891,000 5.51 NR/NR Scotsman Industries, Inc., Term Loan, 4/30/16 $ 895,455 -------------- Total Capital Goods $ 16,664,520 -------------------------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES -- 0.3% Environmental & Facilities Services -- 0.2% 7,082,763 7.25 BB-/Baa3 Brickman Holdings, Ltd., Tranche B Term Loan, 9/21/16 $ 7,239,171 -------------------------------------------------------------------------------------------------- Research & Consulting Services -- 0.1% 1,409,122 7.75 NR/NR Wyle Services Corp., 2010 Incremental Term Loan, 3/25/16 $ 1,414,406 -------------- Total Commercial Services & Supplies $ 8,653,577 -------------------------------------------------------------------------------------------------- TRANSPORTATION -- 0.2% Air Freight & Couriers -- 0.2% 779,050 5.27 NR/B1 Ceva Group Plc, U.S. Term Loan, 11/4/13 $ 766,391 508,620 5.31 NR/NR Ceva Group Plc, Additional Pre-Funded Term Loan, 11/4/13 500,355 794,899 5.27 NR/NR Ceva Group Plc, EGL Term Loan, 11/4/13 781,982 -------------- $ 2,048,728 -------------- Total Transportation $ 2,048,728 -------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.1% Auto Parts & Equipment -- 0.1% 2,060,366 2.99 B+/B2 Allison Transmission, Inc., Term Loan, 8/7/14 $ 2,060,624 284,224 2.15 NR/NR Federal Mogul Corp., Tranche C Term Loan, 12/28/15 277,696 557,080 2.17 NR/NR Federal Mogul Corp., Tranche B Term Loan, 12/29/14 544,284 1,476,232 4.25 NR/NR Pinafore LLC/Pinafore, Inc., Term B-1 Loan, 9/21/16 1,492,094 -------------- $ 4,374,698 -------------- Total Automobiles & Components $ 4,374,698 -------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 48 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 ----------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ----------------------------------------------------------------------------------------------------- CONSUMER DURABLES & APPAREL -- 0.1% Housewares & Specialties -- 0.1% 310,000 4.25 NR/NR Reynolds Group Holdings, Ltd., U.S. Term Loan 2011, 2/9/18 $ 312,131 1,700,000 5.00 NR/NR Reynolds Group Holdings, Ltd., European Term Loan 2011, 2/9/18 2,522,379 -------------- $ 2,834,510 -------------- Total Consumer Durables & Apparel $ 2,834,510 ----------------------------------------------------------------------------------------------------- CONSUMER SERVICES -- 0.1% Education Services -- 0.0% 781,897 2.46 NR/NR Cengage Learning Acquisitions, Inc., Term Loan, 7/4/14 $ 754,083 ----------------------------------------------------------------------------------------------------- Specialized Consumer Services -- 0.1% 3,434,375 7.00 NR/NR Targus Information Corp., Initial Term Loan, 12/8/16 $ 3,477,305 -------------- Total Consumer Services $ 4,231,388 ----------------------------------------------------------------------------------------------------- MEDIA -- 0.3% Broadcasting -- 0.0% 1,000,000 2.71 NR/NR CCO Holdings LLC, Incremental Term Loan (Third Lien), 9/6/14 $ 989,063 ----------------------------------------------------------------------------------------------------- Cable & Satellite -- 0.2% 5,267,997 6.75 CCC/B2 WideOpenWest LLC, Series A Term Loan (New), 6/18/14 $ 5,294,337 ----------------------------------------------------------------------------------------------------- Publishing -- 0.1% 3,989,950 4.75 NR/NR Interactive Data Corp., Term Loan, 1/29/17 $ 4,022,045 -------------- Total Media $ 10,305,445 ----------------------------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 0.5% Packaged Foods & Meats -- 0.5% 2,800,000 11.25 NR/NR Pierre Foods, Inc., Term Loan (Second Lien), 7/29/17 $ 2,854,250 13,432,500 7.00 NR/NR Pierre Foods, Inc., Term Loan (First Lien), 7/29/16 13,552,835 -------------- $ 16,407,085 -------------- Total Food, Beverage & Tobacco $ 16,407,085 ----------------------------------------------------------------------------------------------------- HOUSEHOLD & PERSONAL PRODUCTS -- 0.1% Personal Products -- 0.1% 1,514,700 6.00 NR/Ba1 Revlon Consumer Products Corp., Term Loan, 3/11/15 $ 1,525,232 -------------- Total Household & Personal Products $ 1,525,232 ----------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 49 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value ---------------------------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 1.7% Health Care Facilities -- 0.1% 2,970,000 6.50 B+/B1 Ardent Health Services LLC, Term Loan, 9/15/15 $ 2,987,324 ---------------------------------------------------------------------------------------------------- Health Care Services -- 1.3% 3,276,184 8.50 B/B1 Avita, Inc., NAMM Term Loan, 4/1/14 $ 3,303,486 10,467,500 4.75 BB-/Ba2 Gentiva Health Services, Inc., Term B Borrowing Loan, 8/17/16 10,598,344 186,200 4.75 NR/NR InVentiv Health, Inc., Term B-1 Loan, 8/4/16 187,247 373,333 1.63 NR/NR InVentiv Health, Inc., Term B-2 Loan 8/4/16 375,200 1,538,394 4.75 NR/NR InVentiv Health, Inc., Term B Loan, 5/7/16 1,549,932 5,100,000 7.00 B+/B1 National Mentor Holdings, Inc., Tranche B Term Loan, 2/9/17 5,049,000 4,278,713 8.25 NR/NR National Specialty Hospitals, Inc., Initial Term Loan, 2/3/17 4,273,364 4,950,000 7.25 NR/NR Prime Healthcare Services, Inc., Term B Loan, 4/28/15 4,863,375 665,792 6.00 BB/Ba3 RehabCare Group, Inc., Term B Loan, 11/1/15 670,230 3,813,333 7.50 B+/Ba2 Sun HealthCare Group, Inc., Term Loan, 10/18/16 3,818,100 4,610,000 0.00 NR/NR Surgery Center Holdings, Inc., Term Loan, 2/6/17 4,650,338 1,471,313 7.75 NR/NR Virtual Radiologic Corp., Term Loan, 12/22/16 1,471,313 -------------- $ 40,809,929 ---------------------------------------------------------------------------------------------------- Health Care Supplies -- 0.1% 4,710,000 4.46 B-/B1 Alere, Inc., Term Loan (Second Lien), 6/26/15 $ 4,705,587 ---------------------------------------------------------------------------------------------------- Health Care Technology -- 0.1% 3,112,607 6.25 NR/NR Physician Oncology Services LP, Effective Date Term Loan, 1/31/17 $ 3,104,826 ---------------------------------------------------------------------------------------------------- Managed Health Care -- 0.1% 3,276,184 8.50 B/B1 Aveta, Inc., MMM Term Loan, 4/14/15 $ 3,303,486 -------------- Total Health Care Equipment & Services $ 54,911,152 ---------------------------------------------------------------------------------------------------- PHARMACEUTICALS & BIOTECHNOLOGY -- 0.3% Biotechnology -- 0.3% 6,174,525 5.50 NR/NR Axcan Intermediate Holdings, Inc., Term Loan, 1/25/17 $ 6,174,528 1,500,000 0.00 NR/NR Grifols SA, Foreign Tranche B Term Loan, 1/4/16 2,248,812 The accompanying notes are an integral part of these financial statements. 50 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value --------------------------------------------------------------------------------------------------- Biotechnology -- (continued) 575,000 0.00 NR/NR Grifols, Inc., U.S. Tranche B Term Loan, 6/4/16 $ 581,376 162,804 6.50 NR/NR Harvard Drug Group LLC, Delayed Draw Term Loan, 4/8/16 162,804 1,184,031 6.50 NR/NR Harvard Drug Group LLC, Term Loan, 4/8/16 1,184,031 -------------- $ 10,351,551 -------------- Total Pharmaceuticals & Biotechnology $ 10,351,551 --------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.2% Diversified Financial Services -- 0.2% 2,441,264 0.00 B/B2 Bakrie & Brothers Tbk PT, Tranche B Vallar Loan, 3/5/12 $ 2,441,264 3,058,736 0.00 NR/NR Long Haul Holdings, Ltd., Tranche A Vallar Loan, 3/5/12 3,058,736 -------------- $ 5,500,000 --------------------------------------------------------------------------------------------------- Specialized Finance -- 0.0% 930,345 8.00 B-/B2 NCO Group, Inc., Term B Advance, 5/15/13 $ 922,926 -------------- Total Diversified Financials $ 6,422,926 --------------------------------------------------------------------------------------------------- INSURANCE -- 0.9% Insurance Brokers -- 0.6% 2,749,312 3.30 NR/NR Alliant Holdings I, Inc., Term Loan, 8/21/14 $ 2,735,566 3,361,875 6.75 NR/NR Alliant Holdings I, Inc., Tranche D Incremental Term Loan, 8/21/14 3,403,898 745,318 2.81 B/NR HUB International Holdings, Inc., Delayed Draw Term Loan, 6/13/14 740,380 5,565,362 6.75 B/NR HUB International Holdings, Inc., Additional Term Loan, 6/13/14 5,582,753 3,315,684 2.81 B/NR HUB International Holdings, Inc., Initial Term Loan, 6/13/14 3,293,718 589,286 2.72 B/B2 USI Holdings Corp., Tranche B Term Loan, 5/5/14 583,393 2,846,650 7.00 B/B2 USI Holdings Corp., Series C Term Loan (New), 5/5/14 2,845,464 -------------- $ 19,185,172 --------------------------------------------------------------------------------------------------- Multi-Line Insurance -- 0.3% 4,409,766 2.82 B-/NR AmWins Group, Inc., Initial Term Loan, 6/8/13 $ 4,379,448 6,750,000 5.81 B-/NR AmWins Group, Inc., Initial Term Loan (Second Lien), 6/8/13 6,243,750 -------------- $ 10,623,198 -------------- Total Insurance $ 29,808,370 --------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 51 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value --------------------------------------------------------------------------------------------------- REAL ESTATE -- 0.0% Real Estate Development -- 0.0% 1,287,000 7.50 B/Ba3 Ozburn-Hessey Logistics Holding Co., Term Loan (First Lien), 4/7/16 $ 1,309,523 -------------- Total Real Estate $ 1,309,523 --------------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 0.2% Application Software -- 0.1% 3,500,000 9.75 BB-/NR Vertafore, Inc., Term Loan (Second Lien), 10/18/17 $ 3,570,000 --------------------------------------------------------------------------------------------------- Systems Software -- 0.1% 2,647,975 6.75 B+/B1 Telcordia Technologies, Inc., Term Loan, 4/9/16 $ 2,657,078 -------------- Total Software & Services $ 6,227,078 --------------------------------------------------------------------------------------------------- TECHNOLOGY HARDWARE & EQUIPMENT -- 0.2% Electronic Components -- 0.2% 4,189,500 5.00 NR/NR Scitor Corp., Term Loan, 9/26/14 $ 4,205,211 -------------- Total Technology Hardware & Equipment $ 4,205,211 --------------------------------------------------------------------------------------------------- UTILITIES -- 0.2% Electric Utilities -- 0.2% 8,805,543 3.74 BBB-/Ba1 Texas Competitive Electric Holdings, Inc., Initial Tranche B-2 Term Loan, 10/10/14 $ 7,070,851 -------------- Total Utilities $ 7,070,851 --------------------------------------------------------------------------------------------------- TOTAL SENIOR FLOATING RATE LOAN INTERESTS (Cost $216,547,828) $ 221,632,096 --------------------------------------------------------------------------------------------------- RIGHTS/WARRANTS -- 0.0% ENERGY -- 0.0% Oil & Gas Exploration & Production -- 0.0% 11,303,000 Norse Energy Corp., ASA* $ 32,368 5,925,293 Norse Energy Corp., ASA CW15* 395,923 1,130,300 Penoro Energy Corp., ASA-CW11* 6,474 -------------- Total Energy $ 434,765 --------------------------------------------------------------------------------------------------- TOTAL RIGHTS/WARRANTS (Cost $1,460,197) $ 434,765 --------------------------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENTS -- 6.5% Repurchase Agreements -- 1.6% 16,700,000 BNP Paribas Securities, Inc., 0.05%, dated 4/29/11, repurchase price of $16,700,000 plus accrued interest on 5/2/11 collateralized by $17,034,000 Government National Mortgage Association I, 5.5%, 12/15/39 $ 16,700,000 The accompanying notes are an integral part of these financial statements. 52 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value --------------------------------------------------------------------------------------------------- Repurchase Agreements -- (continued) 16,700,000 Deutschebank, 0.04%, dated 4/29/11, repurchase price of $16,700,000 plus accrued interest on 5/2/11 collateralized by $17,034,000 Federal National Mortgage Association, 5.5 - 7.0%, 8/1/37 - 2/1/38 $ 16,700,000 16,700,000 SG Americas Securities LLC, 0.05%, dated 4/29/11, repurchase price of $16,700,000 plus accrued interest on 5/2/11 collateralized by: $6,725,428 Federal National Mortgage Association, 4.0 - 7.0%, 2/1/34 - 10/1/40 $10,308,572 Freddie Mac Giant, 4.5 - 5.0%, 8/1/18 - 4/1/34 16,700,000 -------------- Total Repurchase Agreements $ 50,100,000 --------------------------------------------------------------------------------------------------- Securities Lending Collateral -- 4.9% (c) Certificates of Deposit: 4,028,600 Bank of Nova Scotia, 0.27%, 9/29/11 $ 4,028,600 2,820,020 BBVA Group NY, 1.11%, 7/26/11 2,820,020 4,028,600 BNP Paribas Bank NY, 0.34%, 5/9/11 4,028,600 4,028,600 Canadian Imperial Bank of Commerce NY, 0.22%, 10/3/11 4,028,600 4,028,600 DnB NOR Bank ASA NY, 0.24%, 6/7/11 4,028,600 2,014,226 National Australia Bank NY, 0.29%, 10/19/11 2,014,226 4,432,335 RaboBank Netherland NV NY, 0.34%, 4/2/12 4,432,335 2,417,160 Royal Bank of Canada NY, 0.34%, 12/2/11 2,417,160 4,028,600 Skandinav Enskilda Bank NY, 0.38%, 6/7/11 4,028,600 2,417,160 SOCGEN NY, 0.28%, 7/14/11 2,417,160 1,611,440 SOCGEN NY, 0.37%, 6/10/11 1,611,440 1,208,580 SOCGEN NY, 0.18%, 5/20/11 1,208,580 4,028,600 Svenska NY, 0.28%, 5/12/11 4,028,600 2,820,020 Svenska NY, 0.20%, 7/19/11 2,820,020 4,028,600 Westpac Banking Corp. NY, 0.34%, 12/6/11 4,028,600 -------------- $ 47,941,141 --------------------------------------------------------------------------------------------------- Commercial Paper: 1,611,440 American Honda Finance, 0.34%, 1/11/12 $ 1,611,440 1,613,211 American Honda Finance, 1.06%, 6/20/11 1,613,211 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 53 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (d) Ratings Value --------------------------------------------------------------------------------------------------- Commercial Paper -- (continued) 1,476,881 Australia & New Zealand Banking Group, 0.91%, 8/4/11 $ 1,476,881 1,611,219 BBVLON, 0.55%, 5/9/11 1,611,219 2,416,949 BBVLON, 0.35%, 5/9/11 2,416,949 4,027,062 BCSFUN, 0.25%, 6/24/11 4,027,062 603,958 BCSFUN, 0.22%, 7/29/11 603,958 3,625,150 CBAPP, 0.26%, 5/23/11 3,625,150 4,093,655 Caterpillar Financial Services Corp., 1.06%, 6/24/11 4,093,655 4,028,672 Federal Home Loan Bank, 0.27%, 6/1/11 4,028,672 402,822 General Electric Capital Corp., 0.39%, 6/6/11 402,822 3,222,634 HSBC, 0.25%, 5/11/11 3,222,634 604,859 JPMorgan Chase & Co., 1.06%, 6/13/11 604,859 3,625,740 JPMorgan Chase & Co., 0.30%, 5/18/11 3,625,740 2,013,862 NABPP, 0.25%, 6/1/11 2,013,862 3,220,971 NORDNA, 0.27%, 7/18/11 3,220,971 3,221,269 PARFIN, 0.23%, 7/11/11 3,221,269 1,611,440 Royal Bank of Canada NY, 0.30%, 4/30/12 1,611,440 2,416,881 SANU, 0.68%, 5/13/11 2,416,881 2,414,808 SANU, 0.68%, 6/17/11 2,414,808 2,013,083 SANU, 0.68%, 6/1/11 2,013,083 2,416,994 SEB, 0.19%, 5/13/11 2,416,994 2,014,238 SOCNAM, 0.37%, 5/3/11 2,014,238 4,028,600 Toyota Motor Credit Corp., 0.34%, 9/8/11 4,028,600 1,209,748 Wachovia, 0.46%, 3/1/12 1,209,748 1,612,052 Wachovia, 0.43%, 10/15/11 1,612,052 806,296 Wells Fargo & Co., 0.39%, 1/24/12 806,296 -------------- $ 61,964,494 --------------------------------------------------------------------------------------------------- Tri-party Repurchase Agreements: 7,227,470 Barclays Capital Plc, 0.03%, 5/2/11 $ 7,227,470 8,057,201 Deutsche Bank AG, 0.03, 5/2/11 8,057,201 8,057,201 HSBC Bank USA NA, 0.03%, 5/2/11 8,057,201 8,057,201 RBS Securities, Inc., 0.04%, 5/2/11 8,057,201 -------------- $ 31,399,073 --------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------- Shares Money Market Mutual Funds: 7,251,481 Dreyfus Preferred Money Market Fund $ 7,251,481 7,251,481 Fidelity Prime Money Market Fund 7,251,481 -------------- $ 14,502,962 --------------------------------------------------------------------------------------- Total Securities Lending Collateral $ 155,807,670 --------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 54 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 -------------------------------------------------------------------------------------- Shares -------------------------------------------------------------------------------------- TOTAL TEMPORARY CASH INVESTMENTS (Cost $205,907,670) $ 205,907,670 -------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 102.6% (Cost $3,088,232,614) (a) $3,244,053,123 -------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- (2.6)% $ (82,586,346) -------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $3,161,466,777 ====================================================================================== * Non-income producing security. (A.D.R.) American Depositary Receipt. WR Security rating withdrawn by either S&P or Moody's NR Not rated by either S&P or Moody's. 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, 2011, the value of these securities amounted to $642,310,049 or 20.3% 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, 2011, the net unrealized gain on investments based on cost for federal income tax purposes of $3,095,362,673, was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $236,134,520 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (87,444,070) ------------ Net unrealized gain $148,690,450 ============ (b) At April 30, 2011, the following securities were out on loan: --------------------------------------------------------------------------------- Principal Amount ($) Description Value --------------------------------------------------------------------------------- 9,000,000 Burger King Capital Corp., 0.0%, 4/15/19 $ 5,310,000 5,618,000 Burger King Corp., 9.875%, 10/15/18 5,941,035 2,430,000 Blue Merger Sub, Inc., 7.625%, 2/15/19 2,487,713 3,539,000 BWAY Holding Co., 10.0%, 6/15/18 3,884,053 9,326,000 C&S Group Enterprise LLC, 8.375%, 5/1/17 (144A) 9,768,985 8,000,000 CEDC Finance Corp., International, Inc., 9.125%, 12/1/16 (144A) 7,740,000 3,909,000 Cemex Finance LLC, 9.5%, 12/14/16 (144A) 4,163,085 The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 55 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) ------------------------------------------------------------------------------------- Principal Amount ($) Description Value ------------------------------------------------------------------------------------- 14,515,000 Cemex SAB de CV, 9.0%, 1/11/18 $ 15,041,171 238,000 Chesapeake Energy Co., 2.5%, 5/15/37 260,907 8,393,000 Cincinnati Bell, Inc., 8.75%, 3/15/18 8,057,280 7,771,000 Cricket Communications, Inc., 7.75%, 10/15/20 7,936,134 1,632,000 Digicel Group, Ltd., 10.5%, 4/15/18 1,860,480 2,000,000 DynCorp International, Inc., 10.375%, 7/1/17 2,140,000 3,700,000 Expro Finance Luxembourg SCA, 8.5%, 12/15/16 3,616,750 1,639,000 FAGE Dairy Industry, Ltd., 9.875%, 2/1/20 (144A) 1,655,390 2,755,000 Ferrexpo Finance Plc, 7.875%, 4/7/16 2,844,317 2,854,000 First Data Corp., 8.25%, 1/15/21 2,839,730 113,000 First Data Corp., 9.875%, 9/24/15 116,814 1,986,413 Ford Motor Co., 4.25%, 11/15/16 3,704,660 700,000 Goodyear Tire & Rubber Co., 8.25%, 8/15/20 777,875 3,000,000 Grupo Papelero Scribe SA, 8.875%, 4/7/20 (144A) 2,850,000 9,386,000 Horizon Lines, Inc., 4.25%, 8/15/12 8,013,298 380,000 International Coal Group, Inc., 9.125%, 4/1/18 430,350 500,000 IRSA Inversiones y Representacion SA, 8.5%, 2/2/17 (144A) 497,500 1,980,000 MetroPCS Wireless, Inc., 7.875%, 9/1/18 2,133,450 1,000,000 NCO Group, Inc., 11.875%, 11/15/14 873,750 2,412,000 Nova Chemicals Corp., 8.625%, 11/1/19 2,770,785 2,252,000 Paetec Holdings Corp., 9.5%, 7/15/15 2,364,600 9,786,000 Pilgrim's Pride Corp., 7.875%, 12/15/18 9,174,375 1,688,000 Pinnacle Entertainment, Inc., 8.75%, 5/15/20 1,814,600 900,000 Rearden G Holdings EINS GmbH, 7.875%, 3/30/20 976,500 2,900,000 SandRidge Energy, Inc., 8.0%, 6/1/18 3,066,750 610,000 Sonic Automotive, Inc., 9.0%, 3/15/18 655,750 1,000,000 Star Energy Geothermal, Inc., 11.5%, 2/12/15 1,156,196 3,960,000 Texas Competitive Electric Holdings LLC, 15.0%, 4/1/21 3,504,600 7,798,000 Tower Automotive Holdings USA, LLC, 10.625%, 9/1/17 8,724,013 604,000 CIA Transporte Energia SA de CV, 8.875%, 12/15/16 (144A) 591,920 2,485,000 Vanguard Health Holding Co., II LLC, 7.75%, 2/1/19 2,584,400 2,600,000 Windstream Corp., 7.75%, 10/1/21 2,749,500 2,450,000 Windstream Corp., 7.75%, 10/15/20 2,597,000 2,139,000 Yankee Acquisition Corp., 9.75%, 2/15/17 2,283,383 ------------------------------------------------------------------------------------- Total $149,959,100 ===================================================================================== The accompanying notes are an integral part of these financial statements. 56 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 (c) Securities lending collateral is managed by Credit Suisse AG, New York Branch. (d) Debt obligation with a variable interest rate. Rate shown is rate at end of period. (e) Security is in default and is non-Income producing. (f) Security is fair valued (see Note 1A). (g) Distributions of investments by country of issue (excluding temporary cash investments) as a percentage of total investment in securities, is as follows: United States 61.2% Cayman Islands 4.4 Argentina 3.4 Canada 2.9 Mexico 2.9 Brazil 2.8 Norway 2.7 Netherlands 2.4 Bermuda 2.4 Luxembourg 2.3 United Kingdom 2.0 Ireland 2.0 Indonesia 1.0 France 1.0 Other (individually less than 1%) 6.6 ----- 100.0% ===== NOTE: Principal amounts are denominated in U.S. Dollars unless otherwise denoted: NOK Norwegian Krone EURO Euro BRL Brazilian Real COP Colombian Peso Purchases and sales of securities (excluding temporary cash investments) for the six months ended April 30, 2011 aggregated $931,161,286 and $575,637,656, 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. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. 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) The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 57 Schedule of Investments | 4/30/11 (Consolidated) (unaudited) (continued) The following is a summary of the inputs used as of April 30, 2011, in valuing the Fund's assets: --------------------------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total --------------------------------------------------------------------------------------------------------- Asset Backed Securities $ -- $ 101,105,196 $ -- $ 101,105,196 Collateralized Mortgage Obligations -- 58,392,494 -- 58,392,494 Corporate Bonds -- 2,283,812,545 -- 2,283,812,545 Convertible Corporate Bonds -- 180,859,548 -- 180,859,548 Municipal Bonds -- 106,733,537 460,680 107,194,217 Foreign Government Bonds -- 48,569,619 -- 48,569,619 Senior Floating Rate Loan Interests -- 221,632,096 -- 221,632,096 Common Stocks 19,963,862 247,453 5,893,556 26,104,871 Convertible Preferred Stocks 7,749,169 433,750 -- 8,182,919 Warrants 434,765 -- -- 434,765 US Government Agency Obligation -- 1,857,183 -- 1,857,183 Temporary Cash Investments -- 191,404,708 -- 191,404,708 Mutual funds 14,502,962 -- -- 14,502,962 --------------------------------------------------------------------------------------------------------- Total $ 42,650,758 $ 3,195,048,129 $ 6,354,236 $ 3,244,053,123 ========================================================================================================= Other Financial Instruments* $ -- $ (1,153,263) $ -- $ (1,153,263) --------------------------------------------------------------------------------------------------------- * Other financial instruments include foreign exchange contracts The following is a reconciliation of assets valued using significant observable inputs (Level 3): ----------------------------------------------------------------------------------------------------------- Senior Floating Rate Loan Common Municipal Corporate Interests Stocks Bonds Bonds Total ----------------------------------------------------------------------------------------------------------- Balance as of 10/31/10 $ 7,564,567 $ 1,328,534 $ 460,680 $ 8,552,195 $ 17,905,976 Realized gain (loss) 1,286 -- -- -- 1,286 Change in unrealized appreciation (depreciation)(1) -- -- -- -- -- Net purchases (sales) (204,945) -- -- -- (204,945) Transfers in and out of Level 3 (7,360,908) 4,565,022 -- (8,552,195) (11,348,081) ----------------------------------------------------------------------------------------------------------- Balance as of 4/30/11 $ -- $ 5,893,556 $ 460,680 $ -- $ 6,354,236 =========================================================================================================== (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 4/30/11 $ (1,117,914) ------------ The accompanying notes are an integral part of these financial statements. 58 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 Statement of Assets and Liabilities | 4/30/11 (Consolidated) (unaudited) ASSETS: Investment in securities (including securities loaned of $149,959,100) (cost $3,088,232,614) $3,244,053,123 Cash 13,571,747 Foreign currencies, at value (cost $7,040,164) 7,450,962 Receivables -- Investment securities sold 1,229,589 Fund shares sold 27,202,324 Dividends and interest 59,058,398 Forward foreign currency settlement contracts, net 890 Other 97,063 ------------------------------------------------------------------------------------------- Total assets $3,352,664,096 ------------------------------------------------------------------------------------------- LIABILITIES: Payables -- Investment securities purchased $ 20,601,719 Fund shares repurchased 8,529,522 Dividends 3,408,351 Upon return of securities loaned 155,807,670 Forward foreign currency portfolio hedge contracts, open-net 1,154,153 Due to affiliates 550,276 Unrealized depreciation on unfunded corporate loans 1,819 Accrued expenses 1,143,809 ------------------------------------------------------------------------------------------- Total liabilities $ 191,197,319 ------------------------------------------------------------------------------------------- NET ASSETS: Paid-in capital $3,268,197,590 Accumulated net investment loss (4,469,005) Accumulated net realized loss on investments and foreign currency transactions (257,519,433) Net unrealized gain on investments 155,818,690 Net unrealized loss on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (561,065) ------------------------------------------------------------------------------------------- Total net assets $3,161,466,777 =========================================================================================== NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $1,211,649,270/110,782,867 shares) $ 10.94 Class B (based on $68,790,349/6,285,740 shares) $ 10.94 Class C (based on $548,744,474/50,323,413 shares) $ 10.90 Class Y (based on $1,310,146,286/121,841,875 shares) $ 10.75 Class Z (based on $22,136,398/1,960,574 shares) $ 11.29 MAXIMUM OFFERING PRICE: Class A ($10.94 [divided by] 95.5% ) $ 11.46 =========================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 59 Statement of Operations (Consolidated) (unaudited) For the Six Months Ended 4/30/11 INVESTMENT INCOME: Dividends (net of foreign taxes withheld of $7,294) $ 152,769 Interest 122,302,733 Income from securities loaned, net 152,673 ---------------------------------------------------------------------------------------------------- Total investment income $122,608,175 ---------------------------------------------------------------------------------------------------- EXPENSES: Management fees $ 8,264,961 Transfer agent fees Class A 581,756 Class B 55,605 Class C 167,347 Class Y 34,217 Class Z 4,698 Distribution fees Class A 1,395,153 Class B 369,213 Class C 2,643,975 Shareholder communication expense 1,093,708 Administrative reimbursements 444,453 Custodian fees 74,965 Registration fees 95,643 Professional fees 63,451 Printing expense 51,167 Fees and expenses of nonaffiliated trustees 44,743 Miscellaneous 100,395 ---------------------------------------------------------------------------------------------------- Total expenses $ 15,485,450 ---------------------------------------------------------------------------------------------------- Net investment income $107,122,725 ---------------------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS, UNFUNDED CORPORATE LOANS AND FOREIGN CURRENCY TRANSACTIONS: Net realized gain on: Investments $ 29,111,569 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 3,067,050 $ 32,178,619 ---------------------------------------------------------------------------------------------------- Change in net unrealized gain (loss) on: Investments $ 82,955,954 Unfunded corporate loans (36,463) Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (3,205,051) $ 79,714,440 ---------------------------------------------------------------------------------------------------- Net gain on investments and foreign currency transactions $111,893,059 ---------------------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $219,015,784 ==================================================================================================== The accompanying notes are an integral part of these financial statements. 60 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 Statements of Changes in Net Assets For the Six Months Ended 4/30/11 and the Year Ended 10/31/10, respectively ----------------------------------------------------------------------------------------------------- Six Months Ended 4/30/11 (Consolidated) Year Ended (unaudited) 10/31/10 ----------------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income $ 107,122,725 $ 171,352,607 Net realized gain (loss) on investments and foreign currency transactions 32,178,619 (27,665,242) Change in net unrealized gain (loss) on investments, unfunded corporate loans and foreign currency transactions 79,714,440 283,215,212 ----------------------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $ 219,015,784 $ 426,902,577 ----------------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.39 and $0.77 per share, respectively) $ (40,703,317) $ (84,181,285) Class B ($0.34 and $0.69 per share, respectively) (2,403,573) (6,109,636) Class C ($0.35 and $0.69 per share, respectively) (17,515,044) (34,338,055) Class Y ($0.40 and $0.79 per share, respectively) (44,860,295) (38,488,064) Class Z ($0.42 and $0.81 per share, respectively) (552,406) (478,741) ----------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (106,034,635) $ (163,595,781) ----------------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $1,013,092,075 $1,773,933,406 Reinvestment of distributions 85,221,238 113,535,022 Cost of shares repurchased (737,617,684) (1,258,976,809) ----------------------------------------------------------------------------------------------------- Net increase in net assets resulting from Fund share transactions $ 360,695,629 $ 628,491,619 ----------------------------------------------------------------------------------------------------- Net increase in net assets $ 473,676,778 $ 891,798,415 NET ASSETS: Beginning of period 2,687,789,999 1,795,991,584 ----------------------------------------------------------------------------------------------------- End of period $3,161,466,777 $2,687,789,999 ----------------------------------------------------------------------------------------------------- Accumulated net investment loss $ (4,469,005) $ (5,557,095) ----------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 61 Statements of Changes in Net Assets (continued) ------------------------------------------------------------------------------------------------------ '11 Shares '11 Amount '10 Shares '10 Amount (unaudited) (unaudited) ------------------------------------------------------------------------------------------------------ Class A Shares sold 33,099,325 $352,986,049 76,506,487 $755,963,989 Reinvestment of distributions 2,905,465 31,115,791 6,064,818 60,194,825 Less shares repurchased (31,300,525) (332,532,721) (84,895,358) (838,841,672) ------------------------------------------------------------------------------------------------------ Net increase (decrease) 4,704,264 $ 51,569,119 (2,324,053) $(22,682,858) ====================================================================================================== Class B Shares sold 118,677 $ 1,268,619 523,187 $ 5,148,813 Reinvestment of distributions 167,005 1,785,154 351,397 3,482,123 Less shares repurchased (1,604,553) (17,175,645) (3,559,373) (35,114,593) ------------------------------------------------------------------------------------------------------ Net decrease (1,318,871) $(14,121,872) (2,684,789) $(26,483,657) ====================================================================================================== Class C Shares sold 5,153,499 $ 55,094,685 11,525,379 $113,677,297 Reinvestment of distributions 1,079,114 11,507,026 1,912,159 18,934,344 Less shares repurchased (5,893,083) (62,726,851) (12,878,243) (126,810,362) ------------------------------------------------------------------------------------------------------ Net increase 339,530 $ 3,874,860 559,295 $ 5,801,279 ====================================================================================================== Class Y Shares sold 55,900,973 $586,461,413 92,141,904 $893,563,267 Reinvestment of distributions 3,830,895 40,356,605 3,098,547 30,659,013 Less shares repurchased (30,463,781) (321,589,703) (25,982,082) (254,814,140) ------------------------------------------------------------------------------------------------------ Net increase 29,268,087 $305,228,315 69,258,369 $669,408,140 ====================================================================================================== Class Z Shares sold 1,562,631 $ 17,281,309 545,517 $ 5,580,040 Reinvestment of distributions 40,976 456,662 25,802 264,717 Less shares repurchased (325,598) (3,592,764) (331,626) (3,396,042) ------------------------------------------------------------------------------------------------------ Net increase 1,278,009 $ 14,145,207 239,693 $ 2,448,715 ====================================================================================================== The accompanying notes are an integral part of these financial statements. 62 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 Financial Highlights ------------------------------------------------------------------------------------------------------------------------- Six Months Ended (Consolidated) (unaudited) Year Ended Year Ended 4/30/11 10/31/10 10/31/09 ------------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 10.53 $ 9.39 $ 7.56 ------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.40 $ 0.80 $ 0.90 Net realized and unrealized gain (loss) on investments and foreign currency transactions 0.40 1.11 1.98 ------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.80 $ 1.91 $ 2.88 ------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.39) $ (0.77) $ (1.05) Net realized gain -- -- -- ------------------------------------------------------------------------------------------------------------------------- Total distributions $ (0.39) $ (0.77) $ (1.05) ------------------------------------------------------------------------------------------------------------------------- Redemption Fee $ -- $ -- $ -- ------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 0.41 $ 1.14 $ 1.83 ------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.94 $ 10.53 $ 9.39 ========================================================================================================================= Total return* 7.72% 21.16% 43.56% Ratio of net expenses to average net assets+ 1.05%** 1.10% 1.10% Ratio of net investment income to average net assets+ 7.41%** 8.08% 11.68% Portfolio turnover rate 41%** 49% 33% Net assets, end of period (in thousands) $1,211,649 $1,118,216 $1,018,040 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.05%** 1.15% 1.32% Net investment income 7.41%** 8.03% 11.46% Ratios with waiver of fees by the Adviser and reduction for fees paid indirectly: Net expenses 1.05%** 1.10% 1.10% Net investment income 7.41%** 8.08% 11.68% ========================================================================================================================= --------------------------------------------------------------------------------------------------------------- Year Ended Year Ended Year Ended 10/31/08 10/31/07 10/31/06 --------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 12.30 $ 12.34 $ 11.88 --------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 1.03 $ 0.96 $ 0.90 Net realized and unrealized gain (loss) on investments and foreign currency transactions (4.59) 0.04 0.49 --------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (3.56) $ 1.00 $ 1.39 --------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (1.07) $ (0.98) $ (0.90) Net realized gain (0.11) (0.06) (0.03) --------------------------------------------------------------------------------------------------------------- Total distributions $ (1.18) $ (1.04) $ (0.93) --------------------------------------------------------------------------------------------------------------- Redemption Fee $ -- $ -- $ 0.00(a) --------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (4.74) $ (0.04) $ 0.46 --------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 7.56 $ 12.30 $ 12.34 =============================================================================================================== Total return* (31.45)% 8.30% 12.12% Ratio of net expenses to average net assets+ 1.10% 1.06% 1.10% Ratio of net investment income to average net assets+ 9.25% 7.73% 7.44% Portfolio turnover rate 25% 31% 41% Net assets, end of period (in thousands) $ 759,925 $1,369,044 $ 659,845 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.18% 1.06% 1.18% Net investment income 9.17% 7.73% 7.37% Ratios with waiver of fees by the Adviser and reduction for fees paid indirectly: Net expenses 1.10% 1.06% 1.10% Net investment income 9.25% 7.73% 7.44% =============================================================================================================== (a) Amount rounds to less than once cent per share. * 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, 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 | 4/30/11 63 Financial Highlights (continued) ---------------------------------------------------------------------------------------------------------------------- Six Months Ended (Consolidated) (unaudited) Year Ended Year Ended 4/30/11 10/31/10 10/31/09 ---------------------------------------------------------------------------------------------------------------------- Class B Net asset value, beginning of period $ 10.53 $ 9.37 $ 7.54 ---------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.34 $ 0.70 $ 0.81 Net realized and unrealized gain (loss) on investments and foreign currency transactions 0.41 1.15 2.01 ---------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.75 $ 1.85 $ 2.82 ---------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.34) $ (0.69) $ (0.99) Net realized gain -- -- -- ---------------------------------------------------------------------------------------------------------------------- Total distributions $ (0.34) $ (0.69) $ (0.99) ---------------------------------------------------------------------------------------------------------------------- Redemption Fee $ -- $ -- $ -- ---------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 0.41 $ 1.16 $ 1.83 ---------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.94 $ 10.53 $ 9.37 ====================================================================================================================== Total return* 7.29% 20.40% 42.42% Ratio of net expenses to average net assets+ 1.87%** 1.92% 2.00% Ratio of net investment income to average net assets+ 6.61%** 7.29% 10.88% Portfolio turnover rate 41%** 49% 33% Net assets, end of period (in thousands) $68,790 $80,179 $96,411 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.87%** 1.92% 2.08% Net investment income 6.61%** 7.29% 10.80% Ratios with waiver of fees paid by the Adviser and reduction for fees paid indirectly: Net expenses 1.87%** 1.92% 2.00% Net investment income 6.61%** 7.29% 10.88% ====================================================================================================================== ------------------------------------------------------------------------------------------------------------- Year Ended Year Ended Year Ended 10/31/08 10/31/07 10/31/06 ------------------------------------------------------------------------------------------------------------- Class B Net asset value, beginning of period $ 12.27 $ 12.31 $ 11.85 ------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.93 $ 0.86 $ 0.80 Net realized and unrealized gain (loss) on investments and foreign currency transactions (4.57) 0.03 0.49 ------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (3.64) $ 0.89 $ 1.29 ------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.98) $ (0.87) $ (0.80) Net realized gain (0.11) (0.06) (0.03) ------------------------------------------------------------------------------------------------------------- Total distributions $ (1.09) $ (0.93) $ (0.83) ------------------------------------------------------------------------------------------------------------- Redemption Fee $ -- $ -- $ 0.00(a) ------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (4.73) $ (0.04) $ 0.46 ------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 7.54 $ 12.27 $ 12.31 =========================================================================================================== Total return* (32.02)% 7.41% 11.25% Ratio of net expenses to average net assets+ 1.92% 1.86% 1.96% Ratio of net investment income to average net assets+ 8.47% 6.93% 6.63% Portfolio turnover rate 25% 31% 41% Net assets, end of period (in thousands) $ 83,412 $155,523 $130,563 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.92% 1.86% 1.96% Net investment income 8.47% 6.93% 6.60% Ratios with waiver of fees paid by the Adviser and reduction for fees paid indirectly: Net expenses 1.92% 1.85% 1.96% Net investment income 8.47% 6.94% 6.60% =========================================================================================================== (a) Amount rounds to less than one cent per share. * 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, 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. 64 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 ------------------------------------------------------------------------------------------------------------------------ Six Months Ended (Consolidated) (unaudited) Year Ended Year Ended 4/30/11 10/31/10 10/31/09 ------------------------------------------------------------------------------------------------------------------------ Class C Net asset value, beginning of period $ 10.49 $ 9.34 $ 7.51 ------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income $ 0.35 $ 0.73 $ 0.82 Net realized and unrealized gain (loss) on investments and foreign currency transactions 0.41 1.11 1.99 ------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 0.76 $ 1.84 $ 2.81 ------------------------------------------------------------------------------------------------------------------------ Distributions to shareowners: Net investment income $ (0.35) $ (0.69) $ (0.98) Net realized gain -- -- -- ------------------------------------------------------------------------------------------------------------------------ Total distributions $ (0.35) $ (0.69) $ (0.98) ------------------------------------------------------------------------------------------------------------------------ Redemption Fee $ -- $ -- $ -- ------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 0.41 $ 1.15 $ 1.83 ------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 10.90 $ 10.49 $ 9.34 ======================================================================================================================== Total return* 7.37% 20.43% 42.56% Ratio of net expenses to average net assets+ 1.75%** 1.82% 1.98% Ratio of net investment income to average net assets+ 6.72%** 7.39% 10.78% Portfolio turnover rate 41%** 49% 33% Net assets, end of period (in thousands) $548,744 $524,777 $461,644 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.75%** 1.82% 1.98% Net investment income 6.72%** 7.39% 10.78% Ratios with waiver of fees by the Adviser and reduction for fees paid indirectly: Net expenses 1.75%** 1.82% 1.98% Net investment income 6.72%** 7.39% 10.78% ======================================================================================================================== --------------------------------------------------------------------------------------------------------------- Year Ended Year Ended Year Ended 10/31/08 10/31/07 10/31/06 --------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 12.24 $ 12.28 $ 11.82 --------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.93 $ 0.86 $ 0.80 Net realized and unrealized gain (loss) on investments and foreign currency transactions (4.57) 0.04 0.49 --------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (3.64) $ 0.90 $ 1.29 --------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.98) $ (0.88) $ (0.80) Net realized gain (0.11) (0.06) (0.03) --------------------------------------------------------------------------------------------------------------- Total distributions $ (1.09) $ (0.94) $ (0.83) --------------------------------------------------------------------------------------------------------------- Redemption Fee $ -- $ -- $ 0.00(a) --------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (4.73) $ (0.04) $ 0.46 --------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 7.51 $ 12.24 $ 12.28 =============================================================================================================== Total return* (32.08)% 7.48% 11.30% Ratio of net expenses to average net assets+ 1.85% 1.82% 1.89% Ratio of net investment income to average net assets+ 8.55% 6.96% 6.66% Portfolio turnover rate 25% 31% 41% Net assets, end of period (in thousands) $347,459 $598,195 $413,213 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.85% 1.82% 1.89% Net investment income 8.55% 6.96% 6.66% Ratios with waiver of fees by the Adviser and reduction for fees paid indirectly: Net expenses 1.85% 1.82% 1.89% Net investment income 8.55% 6.96% 6.66% =============================================================================================================== (a) Amount rounds to less than one cent per share. * 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, 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 | 4/30/11 65 Financial Highlights (continued) -------------------------------------------------------------------------------------------------------------------- Six Months Ended (Consolidated) (unaudited) Year Ended Year Ended 4/30/11 10/31/10 10/31/09 -------------------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 10.35 $ 9.25 $ 7.46 -------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.41 $ 0.86 $ 0.94 Net realized and unrealized gain (loss) on investments and foreign currency transactions 0.39 1.03 1.91 -------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.80 $ 1.89 $ 2.85 Distributions to shareowners: Net investment income (0.40) (0.79) (1.06) Net realized gain -- -- -- -------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 0.40 $ 1.10 $ 1.79 -------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.75 $ 10.35 $ 9.25 ==================================================================================================================== Total return* 7.91% 21.35% 43.78% Ratio of net expenses to average net assets+ 0.73%** 0.73% 0.78% Ratio of net investment income to average net assets+ 7.70%** 8.44% 11.43% Portfolio turnover rate 41%** 49% 33% Net assets, end of period (in thousands) $1,310,146 $959,148 $215,614 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 0.73%** 0.73% 0.79% Net investment income 7.70%** 8.44% 11.43% Ratios with waiver of fees by the Adviser and reduction for fees paid indirectly: Net expenses 0.73%** 0.73% 0.78% Net investment income 7.70%** 8.44% 11.43% ==================================================================================================================== ------------------------------------------------------------------------------------------------------------------ 12/28/05 (a) Year Ended Year Ended to 10/31/08 10/31/07 10/31/06 ------------------------------------------------------------------------------------------------------------------ Class Y Net asset value, beginning of period $ 12.10 $ 12.19 $ 11.95 ------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income $ 1.05 $ 0.97 $ 0.77 Net realized and unrealized gain (loss) on investments and foreign currency transactions (4.48) (0.01) 0.23 ------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ (3.43) $ 0.96 $ 1.00 Distributions to shareowners: Net investment income (1.10) (0.99) (0.76) Net realized gain (0.11) (0.06) -- ------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ (4.64) $ (0.09) $ 0.24 ------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 7.46 $ 12.10 $ 12.19 ================================================================================================================== Total return* (30.96)% 8.12% 8.63%(b) Ratio of net expenses to average net assets+ 0.74% 0.70% 0.73%** Ratio of net investment income to average net assets+ 9.82% 8.05% 7.66%** Portfolio turnover rate 25% 31% 41%(b) Net assets, end of period (in thousands) $50,477 $23,414 $ 36 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 0.74% 0.70% 0.73%** Net investment income 9.82% 8.05% 7.66%** Ratios with waiver of fees by the Adviser and reduction for fees paid indirectly: Net expenses 0.74% 0.70% 0.73%** Net investment income 9.82% 8.05% 7.66%** ================================================================================================================== (a) Class Y shares were first publicly offered on December 28, 2005. (b) Not annualized. * 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. + Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 66 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 -------------------------------------------------------------------------------------------------------------------------- Six Months Ended (Consolidated) (unaudited) Year Ended Year Ended 4/30/11 10/31/10 10/31/09 -------------------------------------------------------------------------------------------------------------------------- Class Z Net asset value, beginning of period $ 10.86 $ 9.67 $ 7.79 -------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.44 $ 0.87 $ 1.00 Net realized and unrealized gain (loss) on investments and foreign currency transactions 0.41 1.13 1.98 -------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.85 $ 2.00 $ 2.98 Distributions to shareowners: Net investment income (0.42) (0.81) (1.10) Net realized gain -- -- -- -------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 0.43 $ 1.19 $ 1.88 -------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 11.29 $ 10.86 $ 9.67 ========================================================================================================================== Total return* 7.93% 21.58% 43.69% Ratio of net expenses to average net assets+ 0.70%** 0.90% 0.90% Ratio of net investment income to average net assets+ 7.62%** 8.28% 11.46% Portfolio turnover rate 41%** 49% 33% Net assets, end of period (in thousands) $22,136 $ 7,416 $ 4,283 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 0.70%** 0.91% 1.23% Net investment income 7.62%** 8.27% 11.13% Ratios with waiver of fees by the Adviser and reduction for fees paid indirectly: Net expenses 0.70%** 0.90% 0.90% Net investment income 7.62%** 8.28% 11.46% ========================================================================================================================== ------------------------------------------------------------------------------------------------------- Year Ended 7/6/07 (a) to 10/31/08 10/31/07 ------------------------------------------------------------------------------------------------------- Class Z Net asset value, beginning of period $ 12.31 $ 12.65 ------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 1.07 $ 0.33 Net realized and unrealized gain (loss) on investments and foreign currency transactions (4.37) (0.35) ------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (3.30) $ (0.02) Distributions to shareowners: Net investment income (1.11) (0.32) Net realized gain (0.11) -- ------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (4.52) $ (0.34) ------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 7.79 $ 12.31 ======================================================================================================= Total return* (29.21)% (0.09)%(b) Ratio of net expenses to average net assets+ 0.90% 0.69%** Ratio of net investment income to average net assets+ 9.85% 8.30%** Portfolio turnover rate 25% 31%(b) Net assets, end of period (in thousands) $ 2,366 $ 97 Ratios with no waiver of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Net expenses 1.11% 0.69%** Net investment income 9.64% 8.30%** Ratios with waiver of fees by the Adviser and reduction for fees paid indirectly: Net expenses 0.90% 0.69%** Net investment income 9.85% 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 the period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of the 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 | 4/30/11 67 Notes to Financial Statements | 4/30/11 (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 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. 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 68 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 information regarding the Fund's principal risks. Please refer to that document when considering the Fund's principal risks. 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. 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. 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. 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. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 69 Securities or 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. 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. 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. Thus, the valuation of the Fund's securities may differ from exchange prices. At April 30, 2011, seven securities were valued using fair value methods (in addition to securities valued using prices supplied by independent pricing services) representing 0.67% 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. 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. 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. 70 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 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 9.) 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 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 will be determined at the end of the current taxable year. The tax character of distributions paid during the year ended October 31, 2010 was as follows: ------------------------------------------------- 2010 ------------------------------------------------- Distributions paid from: Ordinary income $163,595,781 ------------------------------------------------- Total $163,595,781 ================================================= Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 71 The following shows the components of distributable earnings on a federal income tax-basis at October 31, 2010: ------------------------------------------------------- 2010 ------------------------------------------------------- Distributable earnings: Undistributed ordinary income $ 4,565,988 Capital loss carryforward (289,329,562) Current year dividend payable (3,361,514) Unrealized appreciation 68,413,126 ------------------------------------------------------- Total $ (219,711,962) ======================================================= The difference between book-basis and tax-basis unrealized appreciation is attributable to the tax deferral of losses on wash sales, adjustments relating to catastrophe bonds, and the tax-basis adjustments on partnerships 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 $91,815 in underwriting commissions on the sale of Class A shares during the six months ended April 30, 2011. 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, 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. 72 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 G. 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. H. Securities Lending The Fund lends 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. I. 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 Fund or to hedge the risk of default on portfolio securities. When the Fund is 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 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 73 default occurred. The maximum exposure of loss to the Fund as seller of protection 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 described 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. The Fund had no credit default swap contracts in the portfolio at April 30, 2011. 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, 2011, the effective management fee (excluding waivers and/or assumption of expenses) was equivalent to 0.61% of the average daily net assets. 74 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 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 are in effect through March 1, 2012 for Class A, Class B, Class C and Class Z shares. There can be no assurance that PIM will extend the expense limitation agreement for a class of shares beyond the date referred to above. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund as administrative reimbursements. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $111,277 in management fees, administrative costs and certain other reimbursements payable to PIM at April 30, 2011. 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 activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the six months ended April 30, 2011, such out-of-pocket expenses by class of shares were as follows: ----------------------------------------------- Shareholder Communications: ----------------------------------------------- Class A $ 340,858 Class B 32,777 Class C 151,145 Class Y 567,253 Class Z 1,675 ----------------------------------------------- Total $1,093,708 =============================================== Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $388,857 in transfer agent fees and out-of-pocket reimbursements payable to PIMSS at April 30, 2011. 4. Basis for Consolidation for the Pioneer Global High Yield Fund 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 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 75 of April 30, 2011, the Subsidiary represented approximately $4,565,022 or approximately 0.1% 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 $50,142 in distribution fees payable to PFD at April 30, 2011. 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 18 months of purchase (within 12 months for purchases made on or after April 1, 2009). 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, 2011, CDSCs in the amount of $119,875 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 $165 million 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. Interest on borrowings is 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 Funds pay an annual commitment fee for this facility. 76 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 The commitment fee is allocated among participating Funds based on an allocation schedule set forth in the credit agreement. As of April 30, 2011, there were no borrowings outstanding. 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, 2011, the Fund's expenses were not reduced under such arrangements. 8. Unfunded Loan Commitments As of April 30, 2011, the fund had unfunded loan commitments of approximately $1,099,060 (excluding unrealized depreciation on those commitments of $1,819 as of April 30, 2011) 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., Initial Term Loan 746,287 $746,287 $745,354 $ (933) -------------------------------------------------------------------------------------------------- Physician Oncology Services LLP, Delayed Draw Term Loan 354,592 $354,592 $353,705 $ (886) -------------------------------------------------------------------------------------------------- Total $ (1,819) ================================================================================================== In addition, the Fund had the following bridge loan commitments outstanding at April 30, 2011: --------------------------------------------------------------------------------------------------- Net Unrealized Loan Shares Cost Value Gain --------------------------------------------------------------------------------------------------- Echostar Satellite Services LLC, Senior Unsecured Bridge Loan 7,550,000 $ 7,550,000 $ 7,550,000 $-- --------------------------------------------------------------------------------------------------- Emergency Medical Services Corp., Bridge Loan (First Lien) 15,750,000 $15,750,000 $15,750,000 $-- --------------------------------------------------------------------------------------------------- Endo Pharmaceuticals Holdings, Inc., Bridge Loan 12,400,000 $12,400,000 $12,400,000 $-- --------------------------------------------------------------------------------------------------- Kindred Healthcare, Inc., Senior Unsecured Bridge Loan 10,500,000 $10,500,000 $10,500,000 $-- --------------------------------------------------------------------------------------------------- Silgan Holdings, Inc., Senior Subordinated Bridge Loan 14,350,000 $14,350,000 $14,350,000 $-- --------------------------------------------------------------------------------------------------- Total $-- =================================================================================================== 9. Forward Foreign Currency Contracts During the six months ended April 30, 2011, 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 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 77 the settlement date of a forward foreign currency contract, the Fund may close out such contract by entering into an offsetting contract. At April 31, 2011, the Fund's gross forward currency settlement contracts receivable and payable were $956,472 and $955,582 respectively, resulting in a net receivable of $890. The average value of contracts open during the six months ended April 30, 2011 was $14,518,909. Open portfolio hedges at April 30, 2011 were as follows: ------------------------------------------------------------------------------------------------- Net Contracts to In Exchange Settlement Unrealized Currency Deliver For Date Gain/(Loss) ------------------------------------------------------------------------------------------------- EUR (European Dollar) (1,300,000) $ (1,791,361) 6/08/11 $ (135,478) EUR (European Dollar) (10,500,000) $ (14,541,118) 6/15/11 $ (1,018,675) ------------------------------------------------------------------------------------------------- Total $ (1,154,153) ================================================================================================= 10. Additional Disclosures about Derivative Instruments and Hedging Activities: Values of derivative instruments as of April 30, 2011 were as follows: Asset Derivatives 2011 Liabilities Derivatives 2011 ---------------------------- ------------------------------ Balance Sheet Balance Sheet Derivatives Location Value Location Value -------------------------------------------------------------------------------------------- Foreign Exchange Contracts Receivables $890 Payables $1,154,153 -------------------------------------------------------------------------------------------- Total $890 $1,154,153 ============================================================================================ The effect of derivative instruments on the Statement of Operations for the six months ended April 30, 2011 was as follows: ------------------------------------------------------------------------------------------------- Change in Realized Gain Unrealized Gain or (Loss) on or (Loss) on Derivatives Derivatives Location of Gain or (Loss) On Recognized Recognized Derivatives Derivatives Recognized in Income in Income in Income ------------------------------------------------------------------------------------------------- Foreign Exchange Net realized loss on forward foreign Contracts currency contracts and other assets and liabilities denominated in foreign currencies $3,067,050 Foreign Exchange Change in unrealized gain on forward Contracts foreign currency contracts and other assets and liabilities denominated in foreign currencies $(3,205,051) 78 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 Subsequent Events In preparing these financial statements, PIM has evaluated the impact of all events and transactions for potential recognition or disclosure and has determined that there were no subsequent events requiring recognition or disclosure in the financial statements. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 79 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 2010 as the Trustees of the Fund agreed on, among other things, an overall approach and timeline for the process. In July 2010, 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 2010 and September 2010. 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, 2010 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 16, 2010, 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. In addition, the Trustees considered the arrangements put in place to retain key investment and other personnel. The Trustees also considered the substantial 80 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 attention and high priority given by PIM's senior management to the Pioneer fund complex. The Trustees considered that PIM supervises and monitors the performance of the Fund's service providers and provides the Fund with personnel (including Fund officers) and other resources that are necessary for the Fund's business management and operations. 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, 2010, in the fifth quintile of its Morningstar category for the three year period ended June 30, 2010, and in the second quintile of its Morningstar category for the five year period ended June 30, 2010. (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 noted that the yield of the Fund for the twelve months ended June 30, 2010 compared favorably to the yield of the Fund's benchmark for the same period. The Trustees concluded that the investment performance of the Fund was satisfactory. Management Fee and Expenses The Trustees considered information showing the fees and expenses of the Fund in comparison to the management fees of its peer group of funds as classified by Morningstar and 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, 2010 was in the fourth quintile relative to the management fees paid by other funds in its Morningstar peer group for the comparable period. The Trustees also considered the breakpoints in the management fee schedule and the reduced fee rates above certain asset levels. The Trustees noted that the Fund's asset-weighted management fee for its latest fiscal year end was four Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 81 basis points higher than the median of the Fund's peer group and one basis point higher than the last fund in the third quintile of the Fund's peer group. The Trustees also considered that the Fund's peer group was largely comprised of funds investing primarily in U.S. securities and that funds investing substantially in non-U.S. securities, like the Fund, tend to have higher management fees. The Trustees considered that the Fund's expense ratio for the twelve months ended June 30, 2010 was in the fourth quintile relative to its Strategic Insight peer group for the comparable period. The Trustees considered that the Fund's expense ratio was three basis points higher than the median expense ratio of its peer group. The Trustees also considered the impact of the Fund's management fee and non-management fee expenses on the Fund's expense ratio. The Trustees considered the contractual expense limitation agreed to by PIM with respect to the Fund. The Trustees also reviewed management fees charged by PIM to its institutional and other clients. 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 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. 82 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 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 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. Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 83 Trustees, Officers and Service Providers Trustees Officers John F. Cogan, Jr., Chairman John F. Cogan, Jr., President David R. Bock Daniel K. Kingsbury, Executive Mary K. Bush Vice President Benjamin M. Friedman Mark E. Bradley, Treasurer Margaret B.W. Graham Christopher J. Kelley, Secretary Daniel K. Kingsbury Thomas J. Perna Marguerite A. Piret Stephen K. West 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 pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at http://www.sec.gov. 84 Pioneer Global High Yield Fund | Semiannual Report | 4/30/11 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: www.pioneerinvestments.com This report must be preceded or accompanied by a prospectus. The Fund files a complete statement of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. Pioneer Global Aggregate Bond Fund -------------------------------------------------------------------------------- Semiannual Report | April 30, 2011 -------------------------------------------------------------------------------- Ticker Symbols: Class A PGABX Class C PGCBX Class Y PGYBX [LOGO]PIONEER Investments(R) visit 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 34 Notes to Financial Statements 41 Approval of Investment Advisory Agreement 51 Trustees, Officers and Service Providers 55 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 1 President's Letter Dear Shareowner, The U.S. economy is moving forward on a slow path to recovery. We believe the theme for the economy in 2011 may be modest but positive growth. The private sector is showing signs of slow but steady improvement, led by higher capital investment, solid exports, improved consumption, and gradually rising demand for consumer auto loans and commercial loans. At the same time, the risks to a steady recovery remain substantial, including the continued delays in the housing sector's recovery, rising oil prices, and the fiscal drag of U.S. federal and state budget cuts. We are concerned about the long-term risk of inflation in an environment of accommodative Fed policy, continued low nominal and "real" interest rates and rising commodity prices. The recovery process may occur more slowly than many would like, and will almost certainly be accompanied by short-term market swings. But our investment professionals are finding good opportunities to invest. Through the first quarter of 2011, although bonds remained popular with investors, we believed there was value in the equity market. In both equity and bond markets, we are finding good opportunities to invest using the same disciplined approach we have used at Pioneer since 1928, which is to focus on identifying undervalued individual securities with the greatest potential for success, carefully weighing risk against reward. Our teams of investment professionals continually 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. 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. For instance, bond markets certainly rewarded investors for most of 2010, even though equity valuations seemed quite reasonable and were inexpensive relative to bonds and compared with historic levels -- conditions which represented potentially good value for long-term 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. 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 2 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 www.pioneerinvestments.com. We greatly appreciate your trust in us and we thank you for investing with Pioneer. Sincerely, /s/ 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 the opinion of Fund management 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 | 4/30/11 3 Portfolio Management Discussion | 4/30/11 With the support of an improving global economy, corporate bonds and other securities with credit risk outpaced government debt during the six months ended April 30, 2011. In the following interview, Charles Melchreit discusses the factors that affected the performance of Pioneer Global Aggregate Bond Fund during the six-month period. Mr. Melchreit, vice president and portfolio manager at Pioneer, is a member of Pioneer's fixed-income team and is responsible for the daily management of the Fund along with Mr. Tanguy Le Saout, Head of Government Bond and Value-at-Risk (VaR) Portfolios for Pioneer in Europe. Q How did the Fund perform during the six months ended April 30, 2011? A Pioneer Global Aggregate Bond Fund Class A shares returned 2.35% at net asset value over the six months ended April 30, 2011, while the Fund's benchmark, the Barclays Capital Global Aggregate Bond Index (the Barclays Index), returned 1.72%. Over the same period, the average return of the 178 mutual funds in Lipper's Global Income Funds category was 2.03%. On April 30, 2011, the 30-day standardized SEC yield of the Fund's Class A shares was 2.28%. Q What was the investment environment like for global fixed-income securities during the six months ended April 30, 2011? A Investment-grade securities produced positive results for the six-month period, with credit-sensitive securities outperforming government debt. As evidence accumulated that the global economy had emerged from recession, higher-yielding, lower-quality debt -- especially corporate bonds -- outpaced higher-quality securities carrying little credit exposure. In addition to corporate bonds, asset-backed securities also performed better than low-yielding sovereign government debt, which struggled both on fears of increasing inflationary pressures and concerns about the sovereign debt woes of some governments in Europe. In world currency markets, the euro strengthened against the U.S. dollar, as investors were attracted to the higher interest rates available in Europe. Late in the six-month period, the yen weakened against the dollar because of central bank currency intervention following the March 2011 earthquake and tsunami in Japan. Q What were your principal investment strategies for the Fund over the six months ended April 30, 2011, and how did they affect the Fund's performance? A Our focus on corporate bonds and other credit-sensitive, investment-grade securities helped the Fund outperform both the Barclays Index and its Lipper peers during the period. In addition, the Fund's overall currency 4 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 positioning helped performance, as 43% of the Fund's net assets, on average, were held in securities denominated in foreign currencies. We maintained a large overweight to corporate bonds in the Fund's portfolio, representing 28% of net assets on average, compared with a 16% weighting in the Barclays Index benchmark. Most of the Fund's exposure to corporate bonds was held in investment-grade debt. The Fund also was overweighted to mortgage-backed and asset-backed securities (MBS and ABS), which represented 21% of net assets on average, compared with a 17% weighting in the Barclays Index. Consistent with that positioning, U.S. Treasuries were significantly underweighted, representing an average 6% of the Fund's net assets, compared with a 17% weighting in the Barclays Index. An underweighted position in non-U.S. sovereign debt also helped performance, as the Fund's exposure to the asset class represented, on average, about 30% of net assets, compared with 36% in the Barclays Index. In the Fund's currency positioning, overweighted exposures to the currencies of Australia, Canada, Norway and Sweden all helped contribute to outperformance of the benchmark, overcoming the negative effects of an underweighted position in the euro, which gained against the dollar. We de-emphasized the euro in the Fund's portfolio due to our concerns about the sovereign government credit problems in Europe, as governments such as Greece, Ireland and Portugal faced severe debt problems. However, the euro performed better than we anticipated, helped by the higher interest rates available in Europe as compared with the U.S. Because we were concerned about the risk that interest rates would begin to rise and undermine the value of bonds, we maintained a shorter duration in the Fund's portfolio than that of Barclays Index, and the strategy helped the Fund's performance. (Duration is a measure of a portfolio's price sensitivity to changes in interest rates.) At the end of the period, on April 30, 2011, the Fund's effective duration was 5.00 years. Q What types of investments tended to have the greatest influence on the Fund's performance, either positively or negatively, during the six months ended April 30, 2011? A The currency exposures of individual securities tended to have the greatest impact on the Fund's relative performance. In particular, the Fund's investments in Swedish Treasury bonds, short-term Australian debt, and Canadian Housing Trust securities all provided a boost to performance when the underlying currencies strengthened. Conversely, a position in a 30-year Treasury bond held back performance, as did a small Fund investment in a government security issued by Portugal. Investments in several Japanese government securities also detracted from the Fund's relative performance late in the period, as the Japanese yen weakened following the earthquake and tsunami. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 5 Q Did the Fund invest in any derivative securities during the six months ended April 30, 2011, and, if so, did they have a material effect on performance? A The Fund did invest in currency forward contracts to reduce its exposure to the euro. The investments had a slight negative effect on Fund performance when the euro strengthened. The Fund also invested in some U.S. Treasury futures contracts, but the contracts did not have an impact on the Fund's performance. Q What is your investment outlook? A We anticipate that interest rates will move higher, especially in the United States, where we think the greatest risk is that the Federal Reserve Board will wait too long and allow inflationary pressures to build before tightening monetary policy. We already have seen interest rates in Europe move higher because of the higher risks associated with sovereign government debt as well as rising inflation. In general, we think corporate bonds and other credit-sensitive securities, both in the United States and in other developed economies, are fairly priced and remain attractive as investment opportunities in light of our expectation that the global economy should continue to expand. As a consequence, we have maintained an overweight position to corporate credit in the Fund's portfolio. One notable exception to this view, however, pertains to the debt of major European banks. We have underweighted the Fund significantly to investments in those securities, both because of the banks' exposure to sovereign government problems in Europe and because of the residual effects of the banks' early investments in U.S. housing-related debt. We have a positive view of opportunities in the MBS and ABS groups, where we believe judicious security selection can add solid return potential. We have a more favorable view of U.S. commercial mortgages, as well as foreign asset-backed securities (excluding some housing-related bonds from peripheral European markets, such as Spain and Ireland). Looking ahead, we see improving opportunities in some global markets, including those in higher-quality securities in Asia (ex-Japan), as several economies in the region are supported by strong fiscal policies and expanding middle classes that can support continued economic growth. Please refer to the Schedule of Investments on pages 15-33 for a full listing of Fund securities. 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 6 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 emerging markets securities involves risks relating to interest rates, currency exchange rates and economic and political conditions. Investments in the Fund are subject to possible loss due to the financial failure of the issuers of the underlying securities and their inability to meet their debt obligations. Prepayment risk is the chance that mortgage-backed bonds 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 the opinion of Fund management 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 | 4/30/11 7 Portfolio Summary | 4/30/11 Portfolio Diversification -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] Foreign Government Bonds 35.2% U.S. Corporate Bonds 30.6% Collateralized Mortgage Obligations 14.8% U.S. Government Securities 10.8% Asset Backed Securities 5.0% Municipal Bonds 2.7% Preferred Stocks 0.5% Convertible Corporate Bonds 0.4% 10 Largest Holdings -------------------------------------------------------------------------------- (As a percentage of total debt holdings)* 1. Japan Government 5-Yr, 1.2%, 3/20/12 2.90% -------------------------------------------------------------------------------- 2. U.S. Treasury Notes, 4.75%, 2/15/41 2.33 -------------------------------------------------------------------------------- 3. International Bank Recon & Development, Ltd., 5.75%, 10/21/19 1.92 -------------------------------------------------------------------------------- 4. Bundesrepublik Deutschland, 6.5%, 7/4/27 1.88 -------------------------------------------------------------------------------- 5. Japan Government 10-Yr, 1.7%, 9/20/16 1.65 -------------------------------------------------------------------------------- 6. Canadian Government Bond, 2.0%, 6/1/16 1.62 -------------------------------------------------------------------------------- 7. Federal National Mortgage Association, 6.5%, 4/1/38 1.56 -------------------------------------------------------------------------------- 8. Canada Housing Trust No. 1, 3.55%, 9/15/13 1.55 -------------------------------------------------------------------------------- 9. U.S. Treasury Inflation Notes, 2.5%, 1/15/29 1.51 -------------------------------------------------------------------------------- 10. France Government Bond OAT, 3.0%, 10/25/15 1.41 -------------------------------------------------------------------------------- * 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 | 4/30/11 Prices and Distributions | 4/30/11 Net Asset Value per Share -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Class 4/30/11 10/31/10 -------------------------------------------------------------------------------- A $11.27 $11.19 -------------------------------------------------------------------------------- C $11.28 $11.19 -------------------------------------------------------------------------------- Y $11.30 $11.22 -------------------------------------------------------------------------------- Distributions per Share: 11/1/10-4/30/11 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains -------------------------------------------------------------------------------- A $0.1770 $ -- $ -- -------------------------------------------------------------------------------- C $0.1280 $ -- $ -- -------------------------------------------------------------------------------- Y $0.1786 $ -- $ -- -------------------------------------------------------------------------------- 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. You cannot 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 | 4/30/11 9 Performance Update | 4/30/11 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, 2011) ------------------------------------------------------------------- Net Asset Public Offering Period Value (NAV) Price (POP) ------------------------------------------------------------------- Life-of-Class (12/28/07) 7.28% 5.82% 1 Year 10.16 5.19 ------------------------------------------------------------------- Expense Ratio (Per prospectus dated March 1, 2011) ------------------------------------------------------------------- Gross Net ------------------------------------------------------------------- 2.35% 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 Call 1-800-225-6292 or visit 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 3/1/12 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 | 4/30/11 Performance Update | 4/30/11 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, 2011) ------------------------------------------------------------ If If Period Held Redeemed ------------------------------------------------------------ Life-of-Class (12/28/07) 6.41% 6.41% 1 Year 9.38 9.38 ------------------------------------------------------------ Expense Ratio (Per prospectus dated March 1, 2011) ------------------------------------------------------------ Gross Net ------------------------------------------------------------ 3.00% 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 Call 1-800-225-6292 or visit 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 3/1/12 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 | 4/30/11 11 Performance Update| 4/30/11 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, 2011) ------------------------------------------------------------ If If Period Held Redeemed ------------------------------------------------------------ Life-of-Class (12/28/07) 7.42% 7.42% 1 Year 10.23 10.23 ------------------------------------------------------------ Expense Ratio (Per prospectus dated March 1, 2011) ------------------------------------------------------------ Gross Net ------------------------------------------------------------ 1.86% 1.86% ------------------------------------------------------------ [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 Call 1-800-225-6292 or visit pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 12 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 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, 2010, through April 30, 2011. -------------------------------------------------------------------------------- Share Class A C Y -------------------------------------------------------------------------------- Beginning Account Value $1,000.00 $1,000.00 $1,000.00 on 11/1/10 -------------------------------------------------------------------------------- Ending Account Value $1,023.50 $1,019.80 $1,023.60 (after expenses) on 4/30/11 -------------------------------------------------------------------------------- Expenses Paid During Period* $5.02 $9.52 $5.32 -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.00%, 1.90%, and 1.06% for Class A, Class C, and Class Y shares respectively, multiplied by the average account value over the period, multiplied by 181/365. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 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, 2010, through April 30, 2011. -------------------------------------------------------------------------------- Share Class A C Y -------------------------------------------------------------------------------- Beginning Account Value $1,000.00 $1,000.00 $1,000.00 on 11/1/10 -------------------------------------------------------------------------------- Ending Account Value $1,019.84 $1,015.37 $1,019.54 (after expenses) on 4/30/11 -------------------------------------------------------------------------------- Expenses Paid During Period* $5.01 $9.49 $5.31 -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.00%, 1.90%, and 1.06% for Class A, Class C, and Class Y shares respectively, multiplied by the average account value over the period, multiplied by 181/365. 14 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 Schedule of Investments | 4/30/11 (unaudited) ---------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------------- CONVERTIBLE CORPORATE BONDS -- 0.3% ENERGY -- 0.1% Coal & Consumable Fuels -- 0.1% 20,000 BB-/NR Massey Energy Co., 3.25%, 8/1/15 $ 22,525 ----------- Total Energy $ 22,525 ---------------------------------------------------------------------------------------------------------- SEMICONDUCTORS -- 0.2% 35,000 A-/NR Intel Corp., 2.95%, 12/15/35 $ 37,319 ----------- Total Semiconductors $ 37,319 ---------------------------------------------------------------------------------------------------------- TOTAL CONVERTIBLE CORPORATE BONDS (Cost $49,307) $ 59,844 ---------------------------------------------------------------------------------------------------------- Shares PREFERRED STOCKS -- 0.5% BANKS -- 0.3% Diversified Banks -- 0.3% 50 Wells Fargo & Co., 7.5%, 12/31/49 $ 53,974 ----------- Total Banks $ 53,974 ---------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.2% Diversified Financial Services -- 0.2% 1,000 Citigroup Capital XIII, 7.875%, 10/30/40 $ 27,760 ----------- Total Diversified Financials $ 27,760 ---------------------------------------------------------------------------------------------------------- TOTAL PREFERRED STOCKS (Cost $78,884) $ 81,734 ---------------------------------------------------------------------------------------------------------- Principal Amount ($) ---------------------------------------------------------------------------------------------------------- ASSET BACKED SECURITIES -- 4.6% MATERIALS -- 1.0% Paper Products -- 0.4% 50,000 AAA/Aaa Chester Asset Receivables Dealings, 0.99338%, 4/15/16 $ 81,238 ---------------------------------------------------------------------------------------------------------- Precious Metals & Minerals -- 0.1% 20,597 5.91 AA/Aa2 Origen Manufactured Housing, Floating Rate Note, 1/15/35 $ 21,713 ---------------------------------------------------------------------------------------------------------- Steel -- 0.5% 50,000 AAA/Aa2 First NLC Trust, 0.74719%, 9/25/35 $ 46,553 32,154 0.68 AA+/Aa3 Nomura Home Equity Loan, Inc., Floating Rate Note, 5/25/35 30,918 ----------- $ 77,471 ----------- Total Materials $ 180,422 ---------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 15 Schedule of Investments | 4/30/11 (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) ate (b) Ratings Value ------------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.9% Auto Parts & Equipment -- 0.9% 50,000 AAA/NR Ford Auto Securitization, 2.431%, 11/17/14 $ 158,645 ----------- Total Automobiles & Components $ 158,645 ------------------------------------------------------------------------------------------------------- BANKS -- 1.2% Diversified Banks -- 0.1% 19,614 0.24 AAA/Aa1 Wells Fargo Home Equity, Floating Rate Note, 4/25/37 $ 19,067 ------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- 1.1% 6,996 BBB/Baa3 Citigroup Mortgage Loan, 0.34606%, 1/25/37 $ 6,784 25,000 0.74 AA+/A3 Countrywide Asset Backed Certificates, Floating Rate Note, 11/25/35 23,309 26,105 0.63 AAA/Baa2 Countrywide Asset-Backed Certificates, Floating Rate Note, 1/25/36 24,571 32,262 5.07 AAA/Ba2 Countrywide Asset-Backed Certificates, Floating Rate Note, 12/25/35 30,815 10,707 5.56 AAA/A2 CRMSI 2006-2 A3, Floating Rate Note, 9/25/36 10,741 8,307 0.69 A/A2 GSAMP Trust, Floating Rate Note, 3/25/35 7,968 8,748 0.64 AAA/Aa1 GSAMP Trust, Floating Rate Note, 9/25/35 8,429 4,684 0.32 B/Ba3 Morgan Stanley ABS Capital, Inc., Floating Rate Note, 12/25/36 4,449 242 0.31 A-/Caa2 Morgan Stanley Ixis Real Estate, Floating Rate Note, 11/25/36 234 41,322 0.52 AAA/Aa3 Option One Mortgage Loan Trust, Floating Rate Note, 11/25/35 39,259 20,000 0.67 AA+/A3 RASC 2005-KS7 M1, Floating Rate Note, 8/25/35 19,117 ----------- $ 175,676 ----------- Total Banks $ 194,743 ------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 0.8% Diversified Financial Services -- 0.5% 12,177 AA/NR DT Auto Owner Trust, 5.92%, 10/15/15 $ 12,222 27,509 NR/Aaa Edelweiss Auto Funding, Ltd., 1.317%, 1/11/14 40,450 50,000 0.75 AA-/A3 Long Beach Mortgage Loan Trust, Floating Rate Note, 4/25/35 45,397 ----------- $ 98,069 ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 16 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------- Specialized Finance -- 0.3% 33,697 5.32 NR/Baa1 Irwin Home Equity Corp., Floating Rate Note, 6/25/35 $ 32,625 9,559 0.63 AAA/Aaa New Century Home Equity Loan, Floating Rate Note, 3/25/35 8,516 ----------- $ 41,141 ----------- Total Diversified Financials $ 139,210 ---------------------------------------------------------------------------------------------------- REAL ESTATE -- 0.4% Mortgage Real Estate Investment Trust -- 0.4% 25,000 A+/NR FREMF Mortgage Trust, 4.437%, 11/25/17 $ 24,260 35,000 NR/NR FREMF Mortgage Trust, 5.163344%, 9/25/45 35,005 ----------- $ 59,265 ----------- Total Real Estate $ 59,265 ---------------------------------------------------------------------------------------------------- GOVERNMENT -- 0.3% 50,000 AAA/Aaa FHR 3211 PB, 5.5%, 2/15/33 $ 53,721 ----------- Total Government $ 53,721 ---------------------------------------------------------------------------------------------------- TOTAL ASSET BACKED SECURITIES (Cost $761,687) $ 786,006 ---------------------------------------------------------------------------------------------------- COLLATERALIZED MORTGAGE OBLIGATIONS -- 13.8% MATERIALS -- 0.3% Forest Products -- 0.3% 50,000 AAA/Aa1 TSTAR 2006-1A A, 5.668%, 10/15/36 $ 54,142 ----------- Total Materials $ 54,142 ---------------------------------------------------------------------------------------------------- BANKS -- 9.9% Thrifts & Mortgage Finance -- 9.9% 28,449 NR/Ba2 Bank of America Alternative Loan Trust, 5.0%, 7/25/19 $ 28,930 22,649 NR/Baa3 Bank of America Alternative Loan Trust, 6.0%, 3/25/34 23,217 31,012 0.71 NR/A1 Bank of America Alternative Loan Trust, Floating Rate Note, 12/25/33 29,425 36,266 AAA/Aa3 Bank of America Alternative Loan Trust, 5.75%, 4/25/33 37,938 17,885 NR/Baa2 Bank of America Alternative Loan Trust, 5.5%, 9/25/33 18,459 25,408 AAA/NR Bank of America Funding Corp., 5.5%, 1/25/36 26,155 189,040 AAA/A1 Bayview Commercial Asset Trust, 2.65868%, 7/25/37 16,541 116,686 AA/A3 Bayview Commercial Asset Trust, 2.83149%, 9/25/37 11,564 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 17 Schedule of Investments | 4/30/11 (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 100,000 AAA/Aaa Beluga Master Issuer BV, 1.181%, 4/28/99 $ 146,099 22,479 AAA/Aaa Citigroup Commercial Mortgage, 4.639%, 5/15/43 22,640 10,419 AAA/Ba1 Countrywide Alternative Loan Trust, 4.25%, 4/25/34 10,475 13,738 AAA/B2 Countrywide Alternative Loan Trust, 5.5%, 1/25/35 13,922 22,992 AAA/NR Countrywide Alternative Loan Trust, 5.5%, 8/25/34 22,655 17,649 AAA/Ba2 Countrywide Alternative Loan Trust, 5.5%, 4/25/34 17,830 25,962 0.71 AAA/NR Countrywide Alternative Loan Trust, Floating Rate Note, 8/25/18 24,828 35,983 AAA/Baa3 Countrywide Home Loan Mortgage Pass Through Trust, 4.867257%, 12/25/33 34,046 100,000 NR/Aaa Darrowby Plc, 2.3373%, 12/20/43 167,272 1,400,000 BBB/Baa2 Extended Stay America Trust, 1.165%, 1/5/16 27,145 20,876 A-/NR First Horizon Asset Securities, Inc., 6.0%, 5/25/36 20,998 16,955 AAA/Aaa GS Mortgage Securities Corp., II, 7.12%, 11/18/29 17,961 25,443 AAA/Ba2 JP Morgan Mortgage Trust, 6.0%, 8/25/34 23,723 15,000 AAA/Aaa JPMCC 2002-C3 B, 5.146%, 7/12/35 15,587 7,994 4.98 AAA/A2 JPMMT 2004-A1 3A1, Floating Rate Note, 2/25/34 8,138 34,000 BBB+/NR LB-UBS Commercial Mortgage, 5.616%, 10/15/35 33,278 22,369 AAA/A3 Lehman Brothers Small Balance Commercial, 5.41%, 12/25/36 22,025 25,884 AAA/NR Master Alternative Loans Trust, 5.5%, 2/25/35 26,643 21,718 AAA/NR Master Alternative Loans Trust, 4.5%, 1/25/15 21,707 14,358 AA/NR Master Alternative Loans Trust, 5.5%, 10/25/19 14,521 33,537 AAA/AAA Master Alternative Loans Trust, 6.0%, 7/25/34 33,882 15,969 6.73 BBB/NR Master Seasoned Securities Trust, Floating Rate Note, 9/25/32 16,766 6,942 AAA/Aaa Merrill Lynch Mortgage Trust, 4.556%, 6/12/43 7,023 28,946 AAA/A1 MLCC Mortgage Investors, Inc., 0.48344%, 3/25/30 26,177 16,743 0.49 AAA/Baa2 MLCC Mortgage Investors, Inc., Floating Rate Note, 4/25/29 15,755 The accompanying notes are an integral part of these financial statements. 18 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 ----------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ----------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- (continued) 100,000 NR/NR Morgan Stanley Remic Trust, 5.0%, 11/26/36 $ 100,000 139,198 AAA/NR Paragon Secured Finance Plc, 1.1375%, 11/15/35 213,398 9,984 BBB/Baa1 RAAC Series, 6.0%, 1/25/32 10,091 26,306 AAA/NR Residential Asset Securitization Trust, 5.5%, 7/25/35 25,228 28,300 A+/NR Residential Asset Securitization Trust, 5.5%, 2/25/35 28,547 27,835 0.43 AAA/Baa2 Sequoia Mortgage Trust, Floating Rate Note, 3/20/35 23,000 39,215 AAA/Aaa Wachovia Bank Commercial Mortgage, 4.957%, 8/15/35 39,418 6,004,139 0.01 AAA/Aaa Wachovia Bank Commercial Mortgage Trust, Floating Rate Note, 6/15/45 8,113 5,893 BB/NR WaMu Mortgage Pass Through Certificates, 4.82069%, 9/25/35 5,797 30,564 AAA/NR WaMu Mortgage Pass Through Certificates, 2.73272%, 1/25/35 29,988 18,119 0.49 AAA/Caa1 WaMu Mortgage Pass-Through Certificates, Floating Rate Note, 4/25/45 15,457 97,334 NR/Aaa Wells Fargo Commercial Mortgage, 3.349%, 10/15/57 98,153 20,103 A/B1 Wells Fargo Mortgage, 5.5%, 10/25/35 20,274 15,086 0.00 A-/NR Wells Fargo Mortgage Backed, Floating Rate Note, 4/25/36 14,895 32,758 AAA/A1 Wells Fargo Mortgage Backed Securities Trust, 5.0%, 11/25/36 33,068 23,803 NR/B1 Wells Fargo Mortgage Backed Securities Trust, 5.75%, 3/25/36 23,402 ----------- $ 1,672,154 ----------- Total Banks $ 1,672,154 ----------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 3.2% Consumer Finance -- 0.0% 12,150 AAA/Aaa GMAC Mortgage Corp., Loan Trust, 5.5%, 11/25/33 $ 12,272 ----------------------------------------------------------------------------------------------------- Diversified Financial Services -- 2.2% 21,919 AA-/NR Bank of America Mortgage Securities, 5.5%, 11/25/34 $ 22,949 7,100 AAA/NR Bank of America Mortgage Securities, 5.75%, 1/25/35 7,375 20,316 2.75 AAA/Aaa Bank of America Mortgage Securities, Floating Rate Note, 6/25/34 18,913 12,705 5.12 AAA/NR Bank of America Mortgage Securities, Floating Rate Note, 9/25/35 12,182 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 19 Schedule of Investments | 4/30/11 (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- Diversified Financial Services -- (continued) 7,519 AAA/NR Bank of America Mortgage Securities, Inc., 5.0%, 8/25/33 $ 7,510 8,094 NR/A2 Citicorp Mortgage Securities, Inc., 5.5%, 3/25/35 8,149 9,339 NR/B1 CMSI 2006-1 3A1, 5.0%, 2/25/36 9,410 21,010 AAA/Aaa Epic Plc, 1.015%, 10/28/16 33,530 9,254 AAA/Aaa Holland Euro-Denominated Mortgage, 1.096%, 8/18/39 13,697 20,770 5.50 AAA/B2 RALI 2004-QS16 1A1, Floating Rate Note, 12/25/34 21,025 58,412 NR/Ba1 Residential Accredited Loans, Inc., 5.0%, 5/25/19 58,411 28,718 AAA/NR Residential Accredited Loans, Inc., 6.0%, 10/25/34 29,020 21,688 0.81 AAA/Ba1 Residential Accredited Loans, Inc., Floating Rate Note, 1/25/34 20,235 36,046 4.25 AAA/Baa3 Residential Accredited Loans, Inc., Floating Rate Note, 1/25/34 36,451 28,255 NR/Ba3 Residential Accredited Loans, Inc., 5.0%, 8/25/18 28,466 51,486 0.81 AAA/Baa1 Residential Accredited Loans, Inc., Floating Rate Note, 10/25/17 50,635 ----------- $ 377,958 ------------------------------------------------------------------------------------------------------- Investment Banking & Brokerage -- 0.0% 820 5.52 NR/Aaa Bear Stearns Commercial Mortgage, Floating Rate Note, 4/12/38 $ 820 ------------------------------------------------------------------------------------------------------- Specialized Finance -- 1.0% 17,394 0.00 AAA/NR CW Capital Cobalt, Ltd., 5.174%, 8/15/48 $ 17,791 100,000 0.00 AAA/Aaa Permanent Master Issuer Plc, 2.577%, 7/15/42 147,591 ----------- $ 165,382 ----------- Total Diversified Financials $ 556,432 ------------------------------------------------------------------------------------------------------- REAL ESTATE -- 0.4% Mortgage Real Estate Investment Trust -- 0.4% 19,814 1.61 AA+/Aa2 Credit Suisse First Boston Mortgage, Floating Rate Note, 12/25/33 $ 19,015 50,000 BBB/A3 Credit Suisse First Boston Mortgage Securities Corp., 6.448%, 9/15/34 50,005 ----------- $ 69,020 ----------- Total Real Estate $ 69,020 ------------------------------------------------------------------------------------------------------- TOTAL COLLATERALIZED MORTGAGE OBLIGATIONS (Cost $2,322,185) $ 2,351,748 ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 20 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value --------------------------------------------------------------------------------------------------- CORPORATE BONDS -- 29.1% ENERGY -- 2.5% Integrated Oil & Gas -- 0.1% 23,000 BBB+/Baa1 Marathon Oil Corp., 5.9%, 3/15/18 $ 26,114 --------------------------------------------------------------------------------------------------- Oil & Gas Drilling -- 0.2% 25,000 BBB-/Ba1 Pride International, Inc., 6.875%, 8/15/20 $ 28,893 --------------------------------------------------------------------------------------------------- Oil & Gas Equipment & Services -- 0.2% 25,000 BBB/Baa2 Weatherford International, Ltd., 9.625%, 3/1/19 $ 32,422 --------------------------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 0.1% 10,000 BBB/Baa1 Canadian National Resources, Inc., 5.9%, 2/1/18 $ 11,393 --------------------------------------------------------------------------------------------------- Oil & Gas Refining & Marketing -- 0.6% 40,000 A/A2 Motiva Enterprises LLC, 5.75%, 1/15/20 (144A) $ 44,317 25,000 BBB/Baa2 Spectra Energy Capital Co., 6.2%, 4/15/18 28,123 21,000 BBB/Baa2 Valero Energy Corp., 9.375%, 3/15/19 27,280 ----------- $ 99,720 --------------------------------------------------------------------------------------------------- Oil & Gas Storage & Transportation -- 1.3% 25,000 BBB/Baa3 Buckeye Partners LP, 6.05%, 1/15/18 $ 27,726 25,000 BBB/Baa2 DCP Midstream LP, 9.75%, 3/15/19 32,457 40,000 BB/Ba1 Enterprise Products Operating Co., 7.0%, 6/1/67 39,950 10,000 BBB/Baa2 Kinder Morgan Energy Co., 5.95%, 2/15/18 11,182 25,000 BBB-/Baa3 Plains All America Pipeline, LP, 6.125%, 1/15/17 27,839 10,000 A/A3 Questar Pipeline Co., 5.83%, 2/1/18 11,174 30,000 BBB-/Ba1 Rockies Express Pipeline LLC, 5.625%, 4/15/20 30,367 10,000 BBB/Baa2 Spectra Energy Capital LLC, 6.75%, 7/15/18 11,272 20,000 BB+/Baa3 Williams Companies, Inc., 7.75%, 6/15/31 24,271 ----------- $ 216,238 ----------- Total Energy $ 414,780 --------------------------------------------------------------------------------------------------- MATERIALS -- 1.5% Aluminum -- 0.1% 25,000 BBB-/Baa3 Alcoa, Inc., 6.15%, 8/15/20 $ 26,919 --------------------------------------------------------------------------------------------------- Commodity Chemicals -- 0.1% 20,000 BB-/B1 Nova Chemicals Corp., 8.375%, 11/1/16 $ 22,600 --------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 21 Schedule of Investments | 4/30/11 (unaudited) (continued) --------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value --------------------------------------------------------------------------------------------------- Construction Materials -- 0.2% 30,000 BBB/Baa2 Holcim, Ltd., 6.0%, 12/30/19 (144A) $ 31,983 --------------------------------------------------------------------------------------------------- Diversified Metals & Mining -- 0.2% 35,000 BBB-/Baa3 AngloGold Ashanti Holdings, Ltd., 5.375%, 4/15/20 $ 35,995 --------------------------------------------------------------------------------------------------- Fertilizers & Agricultural Chemicals -- 0.2% 25,000 BB+/Ba1 CF Industries Holdings, Inc., 6.875%, 5/1/18 $ 28,219 --------------------------------------------------------------------------------------------------- Paper Products -- 0.1% 15,000 BBB/Ba1 Georgia-Pacific LLC, 5.4%, 11/1/20 $ 15,133 --------------------------------------------------------------------------------------------------- Specialty Chemicals -- 0.2% 25,000 BBB/Baa2 Cytec Industries, Inc., 8.95%, 7/1/17 $ 30,882 --------------------------------------------------------------------------------------------------- Steel -- 0.4% 30,000 BBB-/Baa3 ArcelorMittal, SA, 6.125%, 6/1/18 $ 32,458 25,000 BBB-/Baa3 Commercial Metals Co., 7.35%, 8/15/18 27,260 ----------- $ 59,718 ----------- Total Materials $ 251,449 --------------------------------------------------------------------------------------------------- CAPITAL GOODS -- 1.9% Aerospace & Defense -- 0.2% 30,000 BB/Ba3 Esterline Technologies, Inc., 6.625%, 3/1/17 $ 31,425 --------------------------------------------------------------------------------------------------- Building Products -- 0.3% 55,000 BBB/Ba2 Masco Corp., 7.125% 3/15/20 $ 57,415 --------------------------------------------------------------------------------------------------- Construction & Farm Machinery & Heavy Trucks -- 0.1% 10,000 BBB+/Baa2 Cummins, Inc., 6.75%, 2/15/27 $ 10,702 --------------------------------------------------------------------------------------------------- Electrical Component & Equipment -- 0.2% 25,000 B+/Ba2 Belden CDT, Inc., 7.0%, 3/15/17 $ 25,813 --------------------------------------------------------------------------------------------------- Industrial Conglomerates -- 0.3% 3,000,000 BBB/Baa3 Genworth Financial Assurance Holdings, Inc., 1.6%, 6/20/11 $ 36,858 10,000 A-/Baa1 Tyco International Finance SA, 8.5%, 1/15/19 12,767 ----------- $ 49,625 --------------------------------------------------------------------------------------------------- Industrial Machinery -- 0.2% 15,000 BBB+/Baa1 Ingersoll-Rand Global Holding, Inc., 9.5%, 4/15/14 $ 18,062 20,000 BBB-/Baa3 Valmont Industries, Inc., 6.625%, 4/20/20 21,501 ----------- $ 39,563 --------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 22 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------- Trading Companies & Distributors -- 0.6% 55,000 BBB-/BBB- Aviation Capital Group Corp., 6.75%, 4/6/21 $ 55,431 40,000 BBB/Baa1 GATX Financial Corp., 6.0%, 2/15/18 43,265 ----------- $ 98,696 ----------- Total Capital Goods $ 313,239 ---------------------------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES -- 0.2% Office Services & Supplies -- 0.2% 25,000 BBB+/A2 Pitney Bowes, Inc., 5.6%, 3/15/18 $ 26,668 ----------- Total Commercial Services & Supplies $ 26,668 ---------------------------------------------------------------------------------------------------- TRANSPORTATION -- 0.3% Airlines -- 0.1% 15,000 A-/Baa2 Delta Air Lines, Inc., 4.95%, 11/23/19 $ 15,000 ---------------------------------------------------------------------------------------------------- Railroads -- 0.2% 25,000 BBB+/A3 Burlington Santa Fe Corp., 5.75%, 3/15/18 $ 28,226 ----------- Total Transportation $ 43,226 ---------------------------------------------------------------------------------------------------- AUTOMOBILES & COMPONENTS -- 0.7% Automobile Manufacturers -- 0.7% 100,000 A-/A3 BMW Australia Finance, Ltd., 6.5%, 2/28/14 $ 110,271 10,000 BBB+/Baa2 Nissan Motor Acceptance Corp., 4.5%, 1/30/15 (144A) 10,514 ----------- $ 120,785 ----------- Total Automobiles & Components $ 120,785 ---------------------------------------------------------------------------------------------------- CONSUMER DURABLES & APPAREL -- 0.2% Household Appliances -- 0.2% 25,000 BBB-/Baa3 Whirlpool Corp., 5.5%, 3/1/13 $ 26,603 ----------- Total Consumer Durables & Apparel $ 26,603 ---------------------------------------------------------------------------------------------------- CONSUMER SERVICES -- 0.7% Casinos & Gaming -- 0.2% 25,000 BBB/Baa2 International Game Technology, Inc., 7.5%, 6/15/19 $ 28,765 ---------------------------------------------------------------------------------------------------- Education Services -- 0.5% 30,000 AAA/Aaa Leland Stanford Junior University, 4.75%, 5/1/19 $ 32,399 50,000 AAA/Aaa Yale University, 2.9%, 10/15/14 52,231 ----------- $ 84,630 ----------- Total Consumer Services $ 113,395 ---------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 23 Schedule of Investments | 4/30/11 (unaudited) (continued) ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------- MEDIA -- 0.3% Cable & Satellite -- 0.3% 25,000 BBB+/Baa1 British Sky Broadcasting, Ltd., 6.1%, 2/15/18 (144A) $ 28,047 10,000 BBB/Baa2 Time Warner Cable, Inc., 8.25%, 4/1/19 12,406 5,000 BBB/Baa2 Time Warner Cable, Inc., 8.75, 2/14/19 6,341 ----------- $ 46,794 ----------- Total Media $ 46,794 ---------------------------------------------------------------------------------------------------- RETAILING -- 0.3% Internet Retail -- 0.3% 50,000 BBB-/Ba1 Expedia, Inc., 5.95%, 8/15/20 $ 49,250 ----------- Total Retailing $ 49,250 ---------------------------------------------------------------------------------------------------- FOOD & DRUG RETAILING -- 0.1% Drug Retail -- 0.1% 14,915 0.00 BBB+/Baa2 CVS Pass-Through Trust, 5.773%, 1/10/33 $ 15,402 ----------- Total Food & Drug Retailing $ 15,402 ---------------------------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 0.9% Agricultural Products -- 0.3% 50,000 BBB-/Ba1 Viterra, Inc., 5.95%, 8/1/20 $ 50,536 ---------------------------------------------------------------------------------------------------- Brewers -- 0.1% 20,000 A-/Baa1 Anheuser-Busch InBev Worldwide, Inc., 7.75%, 1/15/19 $ 25,077 ---------------------------------------------------------------------------------------------------- Packaged Foods & Meats -- 0.3% 45,000 BBB-/Baa2 Kraft Foods, Inc., 6.5%, 2/9/40 $ 50,194 ---------------------------------------------------------------------------------------------------- Tobacco -- 0.2% 25,000 BBB/WR UST, Inc., 5.75%, 3/1/18 $ 26,746 ----------- Total Food, Beverage & Tobacco $ 152,553 ---------------------------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 0.1% Health Care Facilities -- 0.1% 5,000 BB-/B2 HCA, Inc., 9.125%, 11/15/14 $ 5,250 10,000 BB/Ba3 HCA, Inc., 8.5%, 4/15/19 11,100 ----------- $ 16,350 ----------- Total Health Care Equipment & Services $ 16,350 ---------------------------------------------------------------------------------------------------- PHARMACEUTICALS & BIOTECHNOLOGY -- 0.2% Biotechnology -- 0.2% 25,000 BBB+/Baa3 Biogen Idec, Inc., 6.0%, 3/1/13 $ 26,826 ----------- Total Pharmaceuticals & Biotechnology $ 26,826 ---------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 24 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 --------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value --------------------------------------------------------------------------------------------------------- BANKS -- 6.7% Diversified Banks -- 4.7% 50,000 AAA/NR AXA Bank Europe SCF, 3.5%, 11/5/20 $ 69,526 80,000 5.18 AA-/Aa3 BNP Paribas SA, Floating Rate Note, 10/17/16 116,725 100,000 AAA/Aaa Cooperative Centrale Raiffeisen, 6.0%, 10/29/15 108,411 50,000 AAA/Aaa Inter-American Development Bank, Ltd., 6.5%, 8/20/19 56,112 285,000 AAA/Aaa International Bank Recon & Development, Ltd., 5.75%, 10/21/19 305,745 40,000 AAA/Aaa Rabobank Nederland NV, 0.0%, 3/3/15 18,906 80,000 3.63 A-/A2 Standard Chartered, Ltd., Floating Rate Note, 2/3/17 117,893 ----------- $ 793,318 --------------------------------------------------------------------------------------------------------- Regional Banks -- 1.0% 40,000 BB/Baa3 Capital One Capital VI, 8.875%, 5/15/40 $ 42,250 25,000 A+/Aa3 Mellon Funding Corp., 5.5%, 11/15/18 27,756 65,000 8.25 BBB/Baa3 PNC Financial Services Group, Inc., Floating Rate Note, 5/29/49 68,795 20,000 AA-/Aa3 Wachovia Bank NA, 6.0%, 11/15/17 22,597 ----------- $ 161,398 --------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance -- 1.0% 100,000 AAA/Aaa Cie de Financement Foncier SA, 4.625%, 12/28/12 $ 174,546 ----------- Total Banks $ 1,129,262 --------------------------------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 4.0% Asset Management & Custody Banks -- 0.2% 25,000 A-/A3 Eaton Vance Corp., 6.5%, 10/2/17 $ 28,718 --------------------------------------------------------------------------------------------------------- Consumer Finance -- 0.5% 35,000 A+/A1 American Honda Finance, Inc., 6.7%, 10/1/13 (144A) $ 39,111 25,000 A/A2 Caterpillar Financial, Inc., 7.05%, 10/1/18 30,634 30,000 B/B3 Springleaf Finance Corp., 6.9%, 12/15/17 28,125 ----------- $ 97,870 --------------------------------------------------------------------------------------------------------- Diversified Financial Services -- 1.2% 20,000 BBB/Baa2 Alterra Finance LLC, 6.25%, 9/30/20 $ 20,504 65,000 AAA/Aaa European Investment Bank, Ltd., 0.0%, 3/2/15 31,441 15,000 AA+/Aa2 General Electric Capital Corp., 4.0%, 2/15/12 15,388 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 25 Schedule of Investments | 4/30/11 (unaudited) (continued) ------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------- Diversified Financial Services -- (continued) 25,000 A+/Aa3 JPMorgan Chase & Co., 6.0%, 1/15/18 $ 27,821 100,000 BBB+/Baa1 JPMorgan Chase & Co., 7.9%, 4/29/49 109,873 ----------- $ 205,027 ------------------------------------------------------------------------------------------------------- Investment Banking & Brokerage -- 1.8% 110,000 5.79 BBB-/Baa2 Goldman Sachs Capital, Inc., Floating Rate Note, 12/29/49 $ 94,875 35,000 BBB/Baa2 Jefferies Group, Inc., 5.125%, 4/13/18 35,221 25,000 BBB/Baa2 Jefferies Group, Inc., 6.875%, 4/15/21 27,406 10,000 A-/A2 Macquarie Group, Ltd., 6.0%, 1/14/20 10,205 50,000 A/A2 Merrill Lynch & Co., 5.45%, 2/5/13 53,218 10,000 A/A2 Morgan Stanley Co., 5.5%, 1/26/20 10,236 45,000 6.63 A/A2 Morgan Stanley Dean Witter Co., Floating Rate Note, 4/1/18 50,237 25,000 BBB/Baa2 Raymond James Financial, Inc., 4.25%, 4/15/16 25,655 ----------- $ 307,053 ------------------------------------------------------------------------------------------------------- Specialized Finance -- 0.3% 41,000 BBB/Baa3 Cantor Fitzgerald LP, 7.875%, 10/15/19 $ 43,555 10,000 A+/A1 National Rural Utilities Corp., 5.45%, 2/1/18 11,100 ----------- $ 54,655 ----------- Total Diversified Financials $ 693,323 ------------------------------------------------------------------------------------------------------- INSURANCE -- 2.8% Life & Health Insurance -- 1.2% 35,000 BBB/Baa3 Delphi Financial Group, Inc., 7.875%, 1/31/20 $ 38,827 25,000 BBB/Ba1 Lincoln National Corp., 6.05%, 4/20/67 24,813 15,000 A-/Baa2 Lincoln National Corp., 8.75%, 7/1/19 19,293 35,000 BBB/Baa2 MetLife, Inc., 10.75%, 8/1/39 49,350 45,000 A-/Baa2 Protective Life Corp., 7.375%, 10/15/19 50,990 25,000 A/Baa2 Prudential Financial, Inc., 5.15%, 1/15/13 26,467 ----------- $ 209,740 ------------------------------------------------------------------------------------------------------- Multi-Line Insurance -- 0.5% 40,000 BBB/Baa3 Genworth Financial, Inc., 7.2%, 2/15/21 $ 40,138 45,000 BB/Baa3 Liberty Mutual Group, Inc., 7.0%, 3/15/37 (144A) 44,325 ----------- $ 84,463 ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 26 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 ----------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ----------------------------------------------------------------------------------------------------- Property & Casualty Insurance -- 0.6% 50,000 BBB-/Baa3 The Hanover Insurance Group, Inc., 7.5%, 3/1/20 $ 53,669 25,000 BB-/Ba1 The Hanover Insurance Group, Inc., 8.207%, 2/3/27 22,375 20,000 BB/Ba2 White Mountains Re Group, Ltd., 7.506%, 5/29/49 19,647 ----------- $ 95,691 ----------------------------------------------------------------------------------------------------- Reinsurance -- 0.5% 40,000 BBB+/BBB+ Platinum Underwriters HD, 7.5%, 6/1/17 $ 42,846 35,000 BBB-/Baa3 Reinsurance Group of America, Inc., 6.75%, 12/15/65 34,488 ----------- $ 77,334 ----------- Total Insurance $ 467,228 ----------------------------------------------------------------------------------------------------- REAL ESTATE -- 2.0% Diversified Real Estate Activities -- 0.2% 35,000 A-/A2 WEA Finance LLC, 7.125%, 4/15/18 $ 41,004 ----------------------------------------------------------------------------------------------------- Diversified Real Estate Investment Trust -- 0.5% 40,000 BBB+/Baa1 Dexus Finance Pty, Ltd., 7.125%, 10/15/14 $ 45,148 20,000 BBB/Baa2 Digital Realty Trust LP, 4.5%, 7/15/15 20,727 10,000 BBB/Baa2 Digital Realty Trust LP, 5.875%, 2/1/20 10,575 ----------- $ 76,450 ----------------------------------------------------------------------------------------------------- Office Real Estate Investment Trust -- 0.2% 25,000 BBB/Baa2 Mack-Cali Realty LP, 5.125%, 2/15/14 $ 26,740 ----------------------------------------------------------------------------------------------------- Retail Real Estate Investment Trust -- 0.2% 35,000 BB+/Baa3 Developers Diversified Realty, Inc., 7.5%, 4/1/17 $ 40,212 ----------------------------------------------------------------------------------------------------- Specialized Real Estate Investment Trust -- 0.9% 10,000 BBB-/Baa2 Health Care REIT, Inc., 6.2%, 6/1/16 $ 11,068 25,000 BBB-/Baa3 Healthcare Realty Trust, Inc., 6.5%, 1/17/17 28,036 25,000 BBB-/Baa2 Hospitality Properties Trust, Inc., 7.875%, 8/15/14 28,110 45,000 BBB-/Baa3 Senior Housing Properties Trust, Inc., 6.75%, 4/15/20 47,862 35,000 BBB-/Baa3 Ventas Realty LP/V, 6.5%, 6/1/16 36,209 ----------- $ 151,285 ----------- Total Real Estate $ 335,691 ----------------------------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 0.3% Internet Software & Services -- 0.3% 45,000 NR/A2 GTP Towers Issuer LLC, 4.436%, 2/15/15 (144A) $ 46,236 ----------- Total Software & Services $ 46,236 ----------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 27 Schedule of Investments | 4/30/11 (unaudited) (continued) ------------------------------------------------------------------------------------------------------ Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ------------------------------------------------------------------------------------------------------ SEMICONDUCTORS -- 0.2% Semiconductor Equipment -- 0.2% 25,000 BBB/Baa1 Klac Instruments Corp., 6.9%, 5/1/18 $ 28,287 ----------- Total Semiconductors $ 28,287 ------------------------------------------------------------------------------------------------------ TELECOMMUNICATION SERVICES -- 1.5% Alternative Carriers -- 0.1% 10,000 CCC+/Caa1 Paetec Holdings, Inc., 9.5%, 7/15/15 $ 10,500 ------------------------------------------------------------------------------------------------------ Integrated Telecommunication Services -- 1.0% 40,000 BBB+/Baa1 Deutsche Telekom AG, 3.75%, 4/22/14 $ 48,995 20,000 BB/Baa3 Embarq Corp., 7.082%, 6/1/16 22,624 20,000 A/A2 Qtel International Finance, Ltd., 6.5%, 6/10/14 22,075 50,000 A-/Baa1 Telefonica Emisiones SAU, 5.496%, 4/1/16 78,542 ----------- $ 172,236 ------------------------------------------------------------------------------------------------------ Wireless Telecommunication Services -- 0.4% 35,000 B+/Ba2 Cricket Communications, Inc., 7.75%, 5/15/16 $ 37,363 30,000 NR/A2 Crown Castle Towers LLC, 4.883%, 8/15/20 29,857 ----------- $ 67,220 ----------- Total Telecommunication Services $ 249,956 ------------------------------------------------------------------------------------------------------ UTILITIES -- 1.3% Electric Utilities -- 0.7% 10,000 BBB+/A3 CenterPoint Energy Houston Electric LLC, 7.0%, 3/1/14 $ 11,469 10,000 A-/Baa1 Commonwealth Edison Co., 6.15%, 9/15/17 11,509 25,000 BBB/Baa3 Commonwealth Edison Co., 6.95%, 7/15/18 27,839 10,000 BB+/Ba1 PPL Capital Funding, Inc., 6.7%, 3/30/67 9,938 35,000 BB+/Baa3 Public Service of New Mexico, Inc., 7.95%, 5/15/18 39,623 10,000 BBB+/A3 West Penn Power Co., 5.95%, 12/15/17 11,287 ----------- $ 111,665 ------------------------------------------------------------------------------------------------------ Independent Power Producer & Energy Traders -- 0.4% 44,297 NR/B1 Coso Geothermal Power Holdings, Inc., 7.0%, 7/15/26 (144A) $ 36,980 38,840 BBB-/Baa3 Panoche Energy Center LLC, 6.88%, 7/31/29 (144A) 40,070 ----------- $ 77,050 ------------------------------------------------------------------------------------------------------ The accompanying notes are an integral part of these financial statements. 28 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 ----------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ----------------------------------------------------------------------------------------------------- Multi-Utilities -- 0.2% 25,000 BBB+/Baa2 NY State Gas and Electric, Co., 6.15%, 12/15/17 (144A) $ 27,433 ----------- Total Utilities $ 216,148 ----------------------------------------------------------------------------------------------------- GOVERNMENT -- 0.4% Government -- 0.4% 50,000 NR/NR European Bank for Redevelopment, Ltd., 1.875%, 12/10/13 $ 83,857 ----------- Total Government $ 83,857 ----------------------------------------------------------------------------------------------------- TOTAL CORPORATE BONDS (Cost $4,415,190) $ 4,867,308 ----------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AGENCY OBLIGATIONS -- 10.1% 152,265 AAA/Aaa Federal Home Loan Mortgage Corp., 6.5%, 8/1/37 $ 167,826 219,997 AAA/Aaa Federal National Mortgage Association, 6.5%, 4/1/38 247,254 95,417 AAA/Aaa Federal National Mortgage Association, 6.5%, 1/1/38 107,289 50,000 NR/NR Government National Mortgage Association, 4.5%, 9/20/39 50,630 981,152 0.70 NR/NR Government National Mortgage Association, Floating Rate Note, 11/16/51 52,167 25,000 AAA/Aaa U.S. Treasury Bonds, 6.25%, 8/15/23 31,395 206,124 AAA/Aaa U.S. Treasury Inflation Notes, 2.5%, 1/15/29 239,442 75,000 AAA/Aaa U.S. Treasury Notes, 8.75%, 8/25/17 169,670 10,000 AAA/Aaa U.S. Treasury Notes, 4.5%, 5/15/38 10,191 60,000 AAA/Aaa U.S. Treasury Notes, 4.5%, 2/15/36 61,491 100,000 AAA/Aaa U.S. Treasury Notes, 5.375%, 2/15/31 116,188 30,000 AAA/Aaa U.S. Treasury Notes, 4.25%, 5/15/39 29,245 60,000 AAA/Aaa U.S. Treasury Notes, 4.5%, 8/15/39 60,938 350,000 AAA/Aaa U.S. Treasury Notes, 4.75%, 2/15/41 369,797 ----------- $ 1,713,523 ----------------------------------------------------------------------------------------------------- TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $1,463,414) $ 1,713,523 ----------------------------------------------------------------------------------------------------- FOREIGN GOVERNMENT BONDS -- 33.1% 200,000 AAA/Aaa Australian Government ACGB, 5.75%, 6/15/11 $ 219,687 EURO 50,000 AAA/Aaa Austria Government Bond, 4.15%, 3/15/37 74,341 EURO 25,000 AA+/Aa1 Belgium Government Bond, 5.5%, 3/28/28 40,911 The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 29 Schedule of Investments | 4/30/11 (unaudited) (continued) --------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value --------------------------------------------------------------------------------------------------------- Foreign Government Bonds -- (continued) EURO 129,000 AA/Aa2 Bonos Y Oblig Del ES, 4.4%, 1/31/15 $ 193,127 EURO 100,000 AAA/Aaa Bundesrepublik Deutschland, 3.25%, 1/4/20 149,814 EURO 150,000 AAA/Aaa Bundesrepublik Deutschland, 6.5%, 7/4/27 298,072 EURO 110,000 A+/Aa2 Buoni Poliennali DE, 4.75%, 2/1/13 168,573 CAD 225,000 AAA/Aaa Canada Housing Trust No. 1, 3.55%, 9/15/13 246,320 CAD 10,000 AAA/Aaa Canada Housing Trust No. 1, 3.35%, 12/15/20 10,357 CAD 25,000 AAA/Aaa Canada Housing Trust No. 1, 3.75%, 3/15/20 26,924 CAD 100,000 AAA/Aaa Canada Housing Trust No. 1, 3.8%, 6/15/21 106,962 CAD 250,000 AAA/Aaa Canadian Government Bond, 2.0%, 6/1/16 257,002 DKK 250,000 AAA/Aaa Denmark Government Bond, 4.5%, 11/15/39 56,859 DKK 170,000 AAA/Aaa Denmark Government Bond, 4.0%, 11/15/15 35,701 DKK 75,000 AAA/Aaa Denmark Government Bond, 6.0%, 11/15/11 15,331 EURO 25,000 AAA/Aaa France Government Bond, 4.0%, 10/25/38 36,668 EURO 150,000 AAA/Aaa France Government Bond OAT, 3.0%, 10/25/15 224,676 SEK 1,000,000 AAA/Aaa Government of Sweden, 5.5%, 10/8/12 173,313 EURO 117,000 AAA/Aaa Government of France, 3.75%, 4/25/21 175,929 IDR 200,000,000 BB+/NR Indonesia Recapitalization Bond, 14.245%, 6/15/13 26,942 IDR 100,000,000 BB+/NR Indonesia Recapitalization Bond, 14.275%, 12/15/13 13,831 IDR 50,000,000 BB+/Ba1 Indonesia Treasury Bond, 12.5%, 3/15/13 6,467 IDR 100,000,000 BB+/Ba1 Indonesia Treasury Bond, 11.0%, 12/15/12 12,534 IDR 25,000,000 NR/Ba1 Indonesia Treasury Bond, 9.0%, 9/15/13 3,082 EURO 65,000 BBB+/Baa3 Ireland Government Bond, 4.5%, 4/18/20 64,666 EURO 15,000 BBB+/Baa3 Ireland Government Bond, 5.0%, 10/18/20 15,059 EURO 10,000 BBB+/Baa3 Ireland Government Bond, 5.9%, 10/18/19 10,831 EURO 50,000 A+/Aa2 Italy Buoni Polienna, 3.75%, 8/1/16 73,809 EURO 25,000 A+/Aa2 Italy Buoni Polienna, 6.5%, 11/1/27 41,880 EURO 75,000 NR/Aa2 Italy Buoni Poliennali Del Tesoro, 2.25%, 11/1/13 108,748 The accompanying notes are an integral part of these financial statements. 30 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 -------------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value -------------------------------------------------------------------------------------------------------- Foreign Government Bonds -- (continued) JPY 20,000,000 AA-/Aa2 Japan Government 10-Yr, 1.7%, 9/20/16 $ 261,800 JPY 17,000,000 AA/Aa3 Japan Government 20-Yr, 1.5%, 3/20/19 218,547 JPY 2,500,000 AA-/Aa2 Japan Government 30-Yr, 2.3%, 12/20/36 31,911 JPY 37,000,000 AA-/Aa2 Japan Government 5-Yr, 1.2%, 3/20/12 460,470 2,500 A/Baa1 Mexican Bonos, 9.5%, 12/18/14 24,016 EURO 100,000 NR/Aaa Netherlands Government Bond, 4.25%, 7/15/13 155,660 EURO 150,000 NR/Aaa Netherlands Government Bond, 5.0%, 7/15/11 224,254 EURO 91,000 NR/Aaa Netherlands Government Bond, 5.5%, 1/15/28 162,922 NOK 150,000 AAA/Aaa Norway Government Bond, 4.25%, 5/19/17 30,045 NOK 275,000 AAA/Aaa Norway Government Bond, 5.0%, 5/15/15 56,455 250,000 A/A2 Poland Government Bond, 5.0%, 4/25/16 91,285 EURO 50,000 BBB-/Baa1 Portugal Obrigacoes do Tesouro, 3.85%, 4/15/21 47,295 EURO 50,000 AAA/Aaa Republic of Austria, 4.35%, 3/15/19 78,812 EURO 110,000 AAA/Aaa Republic of Austria, 7.0%, 7/15/14 172,103 300,000 A/A3 South Africa Government Bond, 8.0%, 12/21/18 44,875 EURO 100,000 AA/Aa2 Spain Government Bond, 4.1%, 7/30/18 141,164 SEK 200,000 AAA/Aaa Sweden Government Bond, 3.75%, 8/12/17 34,294 SEK 500,000 AAA/Aaa Sweden Government Bond, 3.5%, 3/30/39 82,524 SEK 1,000,000 AAA/NR Sweden Government Bond, 4.25%, 3/12/19 177,946 SEK 150,000 AAA/Aaa Sweden Government Bond, 4.5%, 8/12/15 26,448 GBP 50,000 AAA/Aaa United Kingdom Gilt, 4.25%, 9/7/39 84,614 GBP 60,000 AAA/Aaa United Kingdom Treasury, 4.25%, 12/7/27 102,900 ----------- $ 5,598,756 -------------------------------------------------------------------------------------------------------- TOTAL FOREIGN GOVERNMENT BONDS (Cost $5,249,878) $ 5,598,756 -------------------------------------------------------------------------------------------------------- MUNICIPAL BONDS -- 2.5% GOVERNMENT -- 2.5% Municipal Airport -- 0.1% 20,000 BBB/Baa2 Indianapolis Airport Authority, 5.1%, 1/15/17 $ 21,621 -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 31 Schedule of Investments | 4/30/11 (unaudited) (continued) ---------------------------------------------------------------------------------------------------- Principal Floating S&P/Moody's Amount ($) Rate (b) Ratings Value ---------------------------------------------------------------------------------------------------- Municipal Development -- 0.3% 50,000 AA-/Aa3 California Statewide Communities Development Authority, 6.0%, 8/15/42 $ 50,706 ---------------------------------------------------------------------------------------------------- Municipal Higher Education -- 1.8% 50,000 AA+/Aa2 California State University Revenue, 5.0%, 11/1/39 $ 45,162 25,000 AAA/Aaa Connecticut State Health & Educational, 5.0%, 7/1/42 25,420 10,000 AAA/Aaa Massachusetts Health & Educational Facilities, 5.5%, 7/1/36 10,670 70,000 AAA/Aaa Massachusetts Health & Educational Facilities Authority, 5.5%, 11/15/36 75,362 20,000 AAA/Aaa Massachusetts Health & Educational Facilities Authority, 6.0%, 7/1/36 22,117 25,000 AAA/Aaa Massachusetts State Health & Educational, 5.5%, 7/1/32 29,141 30,000 AAA/Aaa Missouri State Health & Educational Facilities, 5.0%, 11/15/39 30,733 50,000 AAA/Aaa New York State Dormitory Authority, 5.0%, 7/1/38 51,330 20,000 AAA/Aaa Texas A&M University, 5.0%, 7/1/30 21,385 ----------- $ 311,320 ---------------------------------------------------------------------------------------------------- Municipal Water -- 0.3% 25,000 AAA/Aa1 City of Charleston South Carolina, 5.0%, 1/1/41 $ 25,713 20,000 AAA/Aa2 Hampton Roads Sanitation District, 5.0%, 4/1/38 20,268 ----------- $ 45,981 ----------- Total Government $ 429,628 ---------------------------------------------------------------------------------------------------- TOTAL MUNICIPAL BONDS (Cost $419,732) $ 429,628 ---------------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 94.0% (Cost $14,760,279) (a) $15,888,547 ---------------------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- 6.0% $ 1,022,467 ---------------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $16,911,014 ==================================================================================================== WR Withdrawn Rating. NR Not rated by either S&P or Moody's. (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, 2011, the value of these securities amounted to $349,016 or 2.1% of total net assets. The accompanying notes are an integral part of these financial statements. 32 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 (a) At April 30, 2011, the net unrealized gain on investments based on cost for federal income tax purposes of $14,760,279 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $1,222,922 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (94,654) ---------- Net unrealized gain $1,128,268 ========== (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: CAD Canadian Dollar DKK Danish Kroner EURO Euro GBP British Pound Sterling JPY Japanese Yen NOK Norwegian Krone IDR Indonesian Rupiah SEK Swedish Krone Purchases and sales of securities (excluding temporary cash investments) for the six months ended April 30, 2011 aggregated $6,266,875 and $2,738,004, 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. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. 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) The following is a summary of the inputs used as of April 30, 2011, in valuing the Fund's assets: ---------------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ---------------------------------------------------------------------------------------------- Convertible Corporate Bonds $ -- $ 59,844 $ -- $ 59,844 Preferred Stocks 81,734 -- -- 81,734 Asset Backed Securities -- 786,006 -- 786,006 Collateralized Mortgage Obligations -- 2,351,748 -- 2,351,748 Corporate Bonds -- 4,867,308 -- 4,867,308 U.S. Government Agency Obligations -- 1,713,523 -- 1,713,523 Foreign Government Bonds -- 5,598,756 -- 5,598,756 Municipal Bonds -- 429,628 -- 429,628 ---------------------------------------------------------------------------------------------- Total $ 81,734 $15,806,813 $ -- $15,888,547 ============================================================================================== Other Financial Instruments* $ (2,235) $ (7,356) $ -- $ (9,590) ============================================================================================== * Other financial instruments include futures and foreign exchange contracts. The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 33 Statement of Assets and Liabilities | 4/30/11 (unaudited) ASSETS: Investment in securities, at value (cost $14,760,279) $15,888,547 Cash 845,049 Futures Collateral 1,600 Foreign currencies, at value (cost $145,069) 156,294 Receivables -- Fund shares sold 3,890 Dividends and interest 185,005 Due from Pioneer Investment Management, Inc. 19,176 Other 26,854 ------------------------------------------------------------------------------------- Total assets $17,126,415 ------------------------------------------------------------------------------------- LIABILITIES: Payables -- Investment securities purchased $ 41,322 Fund shares repurchased 87,539 Dividends 22,949 Forward foreign currency portfolio hedge contracts, open-net 7,356 Due to affiliates 2,176 Accrued expenses 54,059 ------------------------------------------------------------------------------------- Total liabilities $ 215,401 ------------------------------------------------------------------------------------- NET ASSETS: Paid-in capital 15,725,572 Distributions in excess of net investment income (20,072) Accumulated net realized gain on investments, foreign currency transactions, and futures contracts 69,907 Net unrealized gain on investments 1,128,268 Net unrealized gain on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 9,574 Net unrealized loss on futures contracts (2,235) ------------------------------------------------------------------------------------- Total net assets $16,911,014 ===================================================================================== NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $11,485,100/1,018,635 shares) $ 11.27 Class C (based on $3,408,060/302,119 shares) $ 11.28 Class Y (based on $2,017,854/178,565 shares) $ 11.30 MAXIMUM OFFERING PRICE: Class A ($11.80 [divided by] 95.5%) $ 11.80 ===================================================================================== The accompanying notes are an integral part of these financial statements. 34 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 Statement of Operations (unaudited) For the Period Ended 4/30/11 INVESTMENT INCOME: Dividends $ 492 Interest (net of foreign taxes withheld of $16) 303,332 ---------------------------------------------------------------------------------------------------- Total investment income $ 303,824 ---------------------------------------------------------------------------------------------------- EXPENSES: Management fees $ 35,389 Transfer agent fees and expenses Class A 5,212 Class C 1,979 Class Y 110 Distribution fees Class A 8,217 Class C 16,029 Shareholder communication expense 3,548 Administrative reimbursements 2,167 Custodian fees 3,426 Registration fees 66,264 Professional fees 31,966 Printing expense 7,477 Fees and expenses of nonaffiliated trustees 3,052 Miscellaneous 2,333 ---------------------------------------------------------------------------------------------------- Total expenses $ 187,169 Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (101,043) ---------------------------------------------------------------------------------------------------- Net expenses $ 86,126 ---------------------------------------------------------------------------------------------------- Net investment income $ 217,698 ---------------------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS, FUTURES CONTRACTS, AND FOREIGN CURRENCY TRANSACTIONS: Net realized gain on: Investments $ 5,431 Futures contracts 1,165 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 63,311 $ 69,907 ---------------------------------------------------------------------------------------------------- Change in net unrealized gain on: Investments $ 148,975 Futures contracts (2,235) Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (20,616) $ 126,124 ---------------------------------------------------------------------------------------------------- Net gain on investments, futures contracts and foreign currency transactions $ 196,031 ---------------------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $ 413,729 ==================================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 35 Statements of Changes in Net Assets For the Six Months Ended 4/30/11 and the Year Ended 11/30/10, respectively ------------------------------------------------------------------------------------------------- Six Months Ended 4/30/11 Year Ended (unaudited) 11/30/10 ------------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income $ 217,698 $ 373,430 Net realized gain (loss) on investments, futures contracts, and foreign currency transactions 69,907 (2,128) Change in net unrealized gain on investments, futures contracts and foreign currency transactions 126,124 475,934 ------------------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $ 413,729 $ 847,236 ------------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.18 and $0.40 per share, respectively) $ (107,029) $ (205,285) Class C ($0.13 and $0.30 per share, respectively) (37,756) (93,978) Class Y ($0.18 and $0.41 per share, respectively) (71,685) (130,900) Net realized gain: Class A ($0.00 and $0.01 per share, respectively) $ -- $ (5,781) Class C ($0.00 and $0.01 per share, respectively) -- (3,080) Class Y ($0.00 and $0.01 per share, respectively) (3,841) ------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (216,470) $ (442,865) ------------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 7,419,846 $ 6,586,211 Reinvestment of distributions 88,176 170,192 Cost of shares repurchased (4,497,828) (3,979,991) ------------------------------------------------------------------------------------------------- Net increase in net assets resulting from Fund share transactions $ 3,010,194 $ 2,776,412 ------------------------------------------------------------------------------------------------- Net increase in net assets $ 3,207,453 $ 3,180,783 NET ASSETS: Beginning of period 13,703,561 10,522,778 ------------------------------------------------------------------------------------------------- End of period $16,911,014 $13,703,561 ------------------------------------------------------------------------------------------------- Distributions in excess of net investment income $ (20,072) $ (38,992) ------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 36 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 ---------------------------------------------------------------------------------------------- '11 Shares '11 Amount '10 Shares '10 Amount ---------------------------------------------------------------------------------------------- Class A Shares sold 579,829 $ 6,396,190 249,681 $2,707,812 Reinvestment of distributions 6,529 71,998 12,059 129,397 Less shares repurchased (124,696) (1,361,614) (206,006) (2,197,810) ---------------------------------------------------------------------------------------------- Net increase 461,662 $ 5,106,574 55,734 $ 639,399 ============================================================================================== Class C Shares sold 37,874 $ 415,057 89,259 $ 962,994 Reinvestment of distributions 1,468 16,150 3,808 40,774 Less shares repurchased (28,858) (314,779) (104,501) (1,108,874) ---------------------------------------------------------------------------------------------- Net increase (decrease) 10,484 $ 116,428 (11,434) $ (105,106) ============================================================================================== Class Y Shares sold 55,596 $ 608,599 271,098 $2,915,405 Reinvestment of distributions 3 28 2 21 Less shares repurchased (251,727) (2,821,435) (63,073) (673,307) ---------------------------------------------------------------------------------------------- Net increase (decrease) (196,128) $ (2,212,808) 208,027 $2,242,119 ============================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 37 Financial Highlights --------------------------------------------------------------------------------------------------- Six Months 12/28/07 (a) Ended (Commencement 4/30/11 Year Ended Year Ended of Operations) (unaudited) 10/31/10 10/31/09 to 10/31/08 --------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 11.19 $10.84 $ 9.25 $10.00 --------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.19 $ 0.35 $ 0.39 $ 0.25 Net realized and unrealized gain (loss) on investments, futures contracts and foreign currency transactions 0.07 0.41 1.57 (0.75) --------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets from investment operations $ 0.26 $ 0.76 $ 1.96 $(0.50) Distributions to shareowners: Net investment income (0.18) (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 $ 0.08 $ 0.35 $ 1.59 $(0.75) --------------------------------------------------------------------------------------------------- Net asset value, end of period $ 11.27 $11.19 $10.84 $ 9.25 =================================================================================================== Total return* 2.35% 7.21% 21.58% (5.18)%*** Ratio of net expenses to average net assets 1.00%** 1.00% 1.00% 1.00%** Ratio of net investment income to average net assets 3.29%** 3.26% 3.83% 3.23%** Portfolio turnover rate 43%** 27% 28% 46%*** Net assets, end of period (in thousands) $11,485 $6,235 $5,434 $3,628 Ratios with no waiver of fees and assumption of expenses by the Adviser: Net expenses 2.59%** 2.35% 2.90% 3.16%** Net investment income 1.69%** 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. 38 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 --------------------------------------------------------------------------------------------------- Six Months 12/28/07 (a) Ended (Commencement 4/30/11 Year Ended Year Ended of Operations) (unaudited) 10/31/10 10/31/09 to 10/31/08 --------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $11.19 $10.82 $ 9.23 $10.00 --------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.13 $ 0.25 $ 0.29 $ 0.18 Net realized and unrealized gain (loss) on investments, futures contracts and foreign currency transactions 0.09 0.43 1.58 (0.76) --------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets from investment operations $ 0.22 $ 0.68 $ 1.87 $(0.58) Distributions to shareowners: Net investment income (0.13) (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 $ 0.09 $ 0.37 $ 1.59 $(0.77) --------------------------------------------------------------------------------------------------- Net asset value, end of period $11.28 $11.19 $10.82 $ 9.23 =================================================================================================== Total return* 1.98% 6.45% 20.55% (5.95)%*** Ratio of net expenses to average net assets 1.90%** 1.90% 1.89% 1.90%** Ratio of net investment income to average net assets 2.44%** 2.37% 2.94% 2.29%** Portfolio turnover rate 43%** 27% 28% 46%*** Net assets, end of period (in thousands) $3,408 $3,264 $3,281 $2,471 Ratios with no waiver of fees and assumption of expenses by the Adviser: Net expenses 3.33%** 3.00% 3.57% 3.84%** Net investment income 1.01%** 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 | 4/30/11 39 Financial Highlights (continued) --------------------------------------------------------------------------------------------------- Six Months 12/28/07 (a) Ended (Commencement 4/30/11 Year Ended Year Ended of Operations) (unaudited) 10/31/10 10/31/09 to 10/31/08 --------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $11.22 $10.85 $ 9.25 $10.00 --------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.16 $ 0.34 $ 0.38 $ 0.27 Net realized and unrealized gain (loss) on investments, futures contracts and foreign currency transactions 0.10 0.45 1.59 (0.77) --------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets from investment operations $ 0.26 $ 0.79 $ 1.97 $(0.50) Distributions to shareowners: Net investment income (0.18) (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 $ 0.08 $ 0.37 $ 1.60 $(0.75) --------------------------------------------------------------------------------------------------- Net asset value, end of period $11.30 $11.22 $10.85 $ 9.25 =================================================================================================== Total return* 2.36% 7.48% 21.69% (5.12)%*** Ratio of net expenses to average net assets 1.06%** 0.94% 1.00% 0.89%** Ratio of net investment income to average net assets 3.24%** 3.31% 3.83% 3.22%** Portfolio turnover rate 43%** 27% 28% 46%*** Net assets, end of period (in thousands) $2,018 $4,205 $1,809 $1,542 Ratios with no waiver of fees and assumption of expenses by the Adviser: Net expenses 2.25%** 1.86% 2.48% 2.82%** Net investment income 2.06%** 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. 40 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 Notes to Financial Statements | 4/30/10 (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. 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 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 41 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. 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 (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. 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. Thus, the valuation of the Fund's securities may differ from exchange prices. At April 30, 2011, 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. Short-term fixed income securities with remaining maturities of sixty days or less generally are valued at amortized cost. 42 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 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. 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). Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 43 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 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, 2010 was as follows: -------------------------------------------------------------------------------- 2010 -------------------------------------------------------------------------------- Distributions paid from: Ordinary income $412,471 Long-term capital gain 12,702 Distribution in excess of net investment income 17,692 -------------------------------------------------------------------------------- Total $442,865 ================================================================================ The following shows the components of distributable earnings on a federal income tax basis at October 31, 2010: -------------------------------------------------------------------------------- 2010 -------------------------------------------------------------------------------- Distributable earnings: Current year dividend payable $ (21,300) Unrealized appreciation 1,009,483 -------------------------------------------------------------------------------- Total $ 988,183 ================================================================================ 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 $2,121 in underwriting commissions on the sale of Class A shares during the six months ended April 30, 2011. 44 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 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 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. Securities Lending The Fund lends 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. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 45 H. 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. The average number of contracts open during the six months ended April 30, 2011 was 0.57. At April 30, 2011, open futures contracts were as follows: ---------------------------------------------------------------------------------- Number of Contracts Settlement Unrealized Type Long/(Short) Month Value Gain/(Loss) ---------------------------------------------------------------------------------- U.S. 10 Year Note (1) 6/11 $(121,234) $(2,235) ---------------------------------------------------------------------------------- $(2,235) ================================================================================== I. 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. 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. 46 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 PIM has contractually agreed to limit ordinary operating expenses of the Fund to the extent required to reduce Fund expenses to 1.00% and 1.90% of the average daily net assets attributable to Class A and Class C shares, respectively. These expense limitations are in effect through March 1, 2012 for Class A and Class C shares. There can be no assurance that PIM will extend the expense limitation agreement for a class of shares beyond the date referred to above. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund as administrative reimbursements. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $538 in management fees, administrative costs and certain other reimbursements payable to PIM at April 30, 2011. 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, 2011, such out-of-pocket expenses by class of shares were as follows: -------------------------------------------------------------------------------- Shareholder Communications: -------------------------------------------------------------------------------- Class A $1,116 Class C 805 Class Y 1,627 -------------------------------------------------------------------------------- Total $3,548 ================================================================================ Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $1,294 in transfer agent fees and out-of-pocket reimbursements payable to PIMSS at April 30, 2011. 4. Distribution Plan The Fund has adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A and Class C shares. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Pursuant to the Plan, the Fund also pays PFD 1.00% of the average daily net assets attributable to Class C shares. The fee for Class C shares consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class C shares. Included in "Due to affiliates" reflected Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 47 on the Statement of Assets and Liabilities is $344 in distribution fees payable to PFD at April 30, 2011. 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 18 months of purchase (within 12 months for purchases made on or after April 1, 2009). 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, 2011, CDSCs in the amount of $617 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, 2011, the Fund's expenses were not reduced under such arrangements. 6. Forward Foreign Currency Contracts At April 30, 2011, 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, 2011 was $476,580. There were no outstanding settlement contracts at April 30, 2011. Open portfolio hedges at April 30, 2011 were as follows: ------------------------------------------------------------------------------------------------- Net Net Contracts to In Exchange Settlement Unrealized Currency deliver For USD Date Value Gain (Loss) ------------------------------------------------------------------------------------------------- CAD (Canadian Dollar) 300,000 $ 313,589 6/15/11 $ 316,773 $ 3,184 EUR (Euro) (250,000) (352,649) 6/15/11 (370,471) (17,822) GBP (Pound Sterling) (200,000) (321,207) 6/15/11 (334,035) (12,828) JPY (Japanese Yen) (40,000,000) (507,699) 6/15/11 (493,120) 14,579 NOK (Norwegian Krone) 1,700,000 318,006 6/25/11 323,537 5,531 ------------------------------------------------------------------------------------------------- Total $ (7,356) ================================================================================================= 48 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 7. Additional Disclosures about Derivative Instruments and Hedging Activities The effect of derivative instruments on the Statement of Operations for the six months ended, April 30, 2011 was as follows: ---------------------------------------------------------------------------------------------------------- Change in Unrealized Realized Gain Gain or or (Loss) (Loss) on on Derivatives Derivatives Location of Gain or (Loss) On Recognized Recognized Derivatives Derivatives Recognized in Income in Income in Income ---------------------------------------------------------------------------------------------------------- Interest Rate Futures Net realized gain on futures contracts $1,165 Interest Rate Futures Change in net unrealized gain (loss) on $2,047 futures contracts Foreign Exchange Contracts Net realized gain on forward foreign $63,311 currency contracts and other assets and liabilities denominated in foreign currencies Foreign Exchange Contracts Change in unrealized gain (loss) on $(20,616) 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 $165 million 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. Interest on borrowings is 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 Funds pay an annual commitment fee for this 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, 2011, the Fund had no borrowings under this agreement. 9. Subsequent Events In preparing these financial statements, PIM has evaluated the impact of all events and transactions for potential recognition or disclosure and has determined that there were no subsequent events requiring recognition or disclosure in the financial statements. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 49 ADDITIONAL INFORMATION (unaudited) The percentages of the Fund's ordinary income distributions that are exempt from nonresident alien (NRA) tax withholding resulting from qualified interest income and qualified short term gains were 68.42% and 0.0%, respectively. 50 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 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 2010 as the Trustees of the Fund agreed on, among other things, an overall approach and timeline for the process. In July 2010, 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 2010 and September 2010. 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, 2010 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 16, 2010, 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. In addition, the Trustees considered the arrangements put in place to retain key investment and other personnel. The Trustees also considered the substantial Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 51 attention and high priority given by PIM's senior management to the Pioneer fund complex. The Trustees considered that PIM supervises and monitors the performance of the Fund's service providers and provides the Fund with personnel (including Fund officers) and other resources that are necessary for the Fund's business management and operations. 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 third quintile of its Morningstar category for the one year period ended June 30, 2010. (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 noted that the yield of the Fund for the twelve months ended June 30, 2010 compared favorably to the yield of the Fund's benchmark for the same period. The Trustees concluded that the investment performance of the Fund was satisfactory. Management Fee and Expenses The Trustees considered information showing the fees and expenses of the Fund in comparison to the management fees of its peer group of funds as classified by Morningstar and 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, 2010 was in the second quintile relative to the management fees 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, 2010 was in the first quintile relative to its Strategic Insight peer group for the comparable period. 52 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 The Trustees also reviewed management fees charged by PIM to its institutional and other clients. 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 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 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. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 53 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. 54 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 Trustees, Officers and Service Providers Trustees Officers John F. Cogan, Jr., Chairman John F. Cogan, Jr., President David R. Bock Daniel K. Kingsbury, Executive Mary K. Bush Vice President Benjamin M. Friedman Mark E. Bradley, Treasurer Margaret B.W. Graham Christopher J. Kelley, Secretary Daniel K. Kingsbury Thomas J. Perna Marguerite A. Piret Stephen K. West 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 pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at http://www.sec.gov. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 55 This page for your notes. 56 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 This page for your notes. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 57 This page for your notes. 58 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 This page for your notes. Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 59 This page for your notes. 60 Pioneer Global Aggregate Bond Fund | Semiannual Report | 4/30/11 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: www.pioneerinvestments.com This report must be preceded or accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. [LOGO]PIONEER Investments(R) Pioneer Investment Management, Inc. 60 State Street Boston, MA 02109 pioneerinvestments.com Securities offered through Pioneer Funds Distributor, Inc. 60 State Street, Boston, MA 02109 Underwriter of Pioneer Mutual Funds, Member SIPC (C) 2011 Pioneer Investments 21910-03-0611 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; (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. 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. (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, 2011 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, 2011 By (Signature and Title)* /s/ Mark Bradley Mark Bradley, Treasurer Date June 29, 2011 * Print the name and title of each signing officer under his or her signature.