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 811-21569 Pioneer Asset Allocation Trust (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: July 31 Date of reporting period: August 1, 2016 through January 31, 2017 Form N-CSR is to be used by management investment companies to file reports with the Commission not later than 10 days after the transmission to stockholders of any report that is required to be transmitted to stockholders under Rule 30e-1 under the Investment Company Act of 1940 (17 CFR 270.30e-1). The Commission may use the information provided on Form N-CSR in its regulatory, disclosure review, inspection, and policymaking roles. A registrant is required to disclose the information specified by Form N-CSR, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-CSR unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. ss. 3507. ITEM 1. REPORTS TO STOCKHOLDERS. Pioneer Solutions - Conservative Fund Pioneer Solutions - Balanced Fund Pioneer Solutions - Growth Fund -------------------------------------------------------------------------------- Semiannual Report | January 31, 2017 -------------------------------------------------------------------------------- Ticker Symbols: Conservative Balanced Growth Class Fund Fund Fund ----- ---- ---- ---- A PIAVX PIALX GRAAX C PICVX PIDCX GRACX R PSMRX BALRX SOGRX Y IBBCX IMOYX IBGYX [LOGO] PIONEER Investments(R) visit us: us.pioneerinvestments.com Table of Contents President's Letter 2 Portfolio Management Discussion 4 Fund Reviews 11 Comparing Ongoing Fund Expenses 12 Prices and Distributions 18 Portfolio Summary & Performance Update 21 Schedule of Investments 36 Financial Statements 48 Notes to Financial Statements 70 Approval of Investment Advisory Agreement 104 Trustees, Officers and Service Providers 119 Pioneer Solutions Funds | Semiannual Report | 1/31/17 1 President's Letter Dear Shareowner, The 2016 calendar year featured many swings in market sentiment, both in the equity and fixed-income markets. After a slow start to the year, the markets began to rally in mid-February 2016 with a recovery in the prices of oil and other commodities, as well as slow, positive progress in U.S. employment figures. The rally persisted throughout much of the remaining 10 months of 2016, gaining further momentum in the second half of the year when U.S. gross domestic product (GDP) growth showed solid improvement during the third quarter and unemployment continued to decline. Finally, in November, the election of Donald Trump as the 45th President of the United States sparked a dramatic late-year market upturn that saw U.S. equities briefly climb to all-time highs. Speculation that the new Trump administration's policies would stimulate the U.S. economy through reduced taxes, less regulation, and increased government spending on infrastructure, fueled the year-end rally. For the full 12 months ended December 31, 2016, the Standard & Poor's 500 Index, a broad measure of U.S. stock market performance, returned a strong 11.9%. In bond markets, the Federal Reserve Board's (the Fed's) 0.25% hike in the Federal funds rate in December 2016, its first rate increase in a year, contributed to a sell-off in U.S. Treasuries. The pullback from Treasuries also derived from the market's increased inflation and growth expectations under the incoming Trump administration. Elsewhere within fixed income, corporate credit, particularly in the high-yield segment of the market, performed well over the fourth quarter and the full calendar year. U.S. high-yield securities, as measured by the Bank of America Merrill Lynch U.S. High Yield Index, returned a robust 17.5% for the 12 months ended December 31, 2016, with a rally in the energy sector following the recovery in oil and other commodity prices last February bolstering the high-yield market's performance. Meanwhile, the Bloomberg Barclays U.S. Aggregate Bond Index, which tracks the performance of Treasury and agency issues, corporate bond issues, and mortgage-backed securities, returned 2.7% for the same 12-month period, reflecting the relative weakness in government bonds. The U.S. economy's underlying fundamentals seem solid, and growth prospects for 2017 appear healthy. However, we remain concerned about risks to the economy of potentially disruptive trade policies pursued by the Trump administration. Barring a damaging trade war, though, we anticipate the Fed will continue to hike short-term interest rates gradually during 2017. In addition, we expect the Fed to consider carefully the potential economic effects of any fiscal policies enacted by the new Trump administration and the Republican-controlled Congress. In that regard, we believe President Trump's economic policies, if they come to fruition, could help boost real GDP growth. However, the impact of Trump's policies on U.S. GDP may be greater in 2018 rather than in 2017. Still, even prior to the late-year "Trump rally," U.S. GDP growth appeared to be settling in at a sustainable annual pace of more than 2% as 2016 drew to a close, following some weaker performance in the first half of the year. Continued improvement in the employment market driven in part by gains in manufacturing output were among the factors behind the bounce-back in GDP. 2 Pioneer Solutions Funds | Semiannual Report | 1/31/17 While economic conditions inside the U.S. appear solid, many economies around the world continue to experience slow growth rates. Moreover, several countries in various regions face a number of challenges in 2017 and beyond, including the shifting geopolitics driving "Brexit" - the United Kingdom's pending exit from the European Union - as well as related populist movements in Europe, limited productivity gains, aging populations, and transitioning economic models in China and other emerging markets. In recent years, global central banks have kept interest rates at close to zero in an effort to stimulate economic growth. While financial markets often benefited from the low rates, it now appears that those policies may be losing their effectiveness, leaving central banks little room to maneuver going forward. Moreover, the low interest rates have caused government bond yields to plummet, presenting a dilemma for the income-oriented investor. Against this backdrop of still-low global interest rates, shifting priorities of central banks, evolving demographics, and numerous geopolitical concerns, we believe investors are likely to face ongoing challenges and much uncertainty when it comes to finding opportunities for both income and capital appreciation. While much has been made of passive investing as a possible source of stability in this uncertain environment, it is our view that all investment decisions are active choices. Throughout Pioneer's history, we have believed in the importance of active management. During challenging market conditions, we view the value of active management as even more compelling. Our experienced and tenured investment teams focus on identifying value across global markets using proprietary research, careful risk management, and a long-term perspective. We believe our shareowners can benefit from the experience and tenure of our investment teams as well as the insights generated from our extensive research process. As always, and particularly during times of market uncertainty, we encourage you to work with your financial advisor to develop an overall investment plan that addresses both your short- and long-term goals, and to implement such a plan in a disciplined manner. We greatly appreciate the trust you have placed in us and look forward to continuing to serve you in the future. Sincerely, /s/ Lisa M. Jones Lisa M. Jones President and CEO Pioneer Investment Management USA Inc. January 31, 2017 Any information in this shareowner report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. 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 Solutions Funds | Semiannual Report | 1/31/17 3 Portfolio Management Discussion | 1/31/17 In the following interview, portfolio managers John O'Toole and Paul Weber discuss the market environment and investment strategies that applied to the Pioneer Solutions Funds for the six-month period ended January 31, 2017. Working out of Pioneer's Dublin, Ireland office, Mr. O'Toole, Head of Multi-Asset Portfolio Management at Pioneer, Mr. Weber, Head of Fund Research & Manager Selection at Pioneer, and Salvatore Buono, Head of Strategy Alignment and Structured Products at Pioneer, are responsible for the day-to-day management of the portfolios. Q How did the Funds perform during the six-month period ended January 31, 2017? A During the six-month period ended January 31, 2017, Pioneer Solutions - Conservative Fund's Class A shares returned -0.22% at net asset value, while the Morgan Stanley Capital International (MSCI) World ND Index(1) returned 4.95% and the Bloomberg Barclays U.S. Aggregate Bond Index returned -2.95%. During the same period, the average return of the 373 mutual funds in Lipper's Mixed-Asset Target Allocation Conservative Funds category was 0.94%, and the average return of the 207 mutual funds in Morningstar's 15% to 30% Equity Allocation Funds category was 0.63%. Pioneer Solutions - Balanced Fund's Class A shares returned 1.01% at net asset value during the six-month period, while the MSCI World ND Index returned 4.95% and the Bloomberg Barclays U.S. Aggregate Bond Index returned -2.95%. During the same period, the average return of the 589 mutual funds in Lipper's Mixed-Asset Target Allocation Moderate Funds category was 2.50%, and the average return of the 839 mutual funds in Morningstar's 50% to 70% Equity Allocation Funds category was 2.96%. Pioneer Solutions - Growth Fund's Class A shares returned 2.90% at net asset value during the six-month period, while the MSCI World ND Index returned 4.95% and the Bloomberg Barclays U.S. Aggregate Bond Index returned -2.95%. During the same period, the average return of the 518 1 The MSCI information may only be used for your internal use, may not be reproduced or redisseminated in any form and may not be used as a basis for or a component of any financial instruments or products or indices. None of the MSCI information is intended to constitute investment advice or a recommendation to make (or refrain from making) any kind of investment decision and may not be relied on as such. Historical data and analysis should not be taken as an indication or guarantee of any future performance analysis, forecast or prediction. The MSCI information is provided on an "as is" basis and the user of this information assumes the entire risk of any use made of this information. MSCI, each of its affiliates and each other person involved in or related to compiling, computing or creating any MSCI information (collectively, the "MSCI Parties") expressly disclaims all warranties (including, without limitation, any warranties of originality, accuracy, completeness, timeliness, non-infringement, merchantability and fitness for a particular purpose) with respect to this information. Without limiting any of the foregoing, in no event shall any MSCI Party have any liability for any direct, indirect, special, incidental, punitive, consequential (including, without limitation, lost profits) or any other damages. 4 Pioneer Solutions Funds | Semiannual Report | 1/31/17 mutual funds in Lipper's Mixed-Asset Target Allocation Growth Funds category was 3.37%, and the average return of the 416 mutual funds in Morningstar's 70% to 85% Equity Allocation Funds category was 3.92%. Q How would you characterize the economic and market backdrop during the six-month period ended January 31, 2017? A The reaction of investors to the November 8th U.S. presidential election result was the principal driver of the performance of risk-based asset classes such as equities and corporate bonds over the six-month period. The period opened against a backdrop of central banks in Europe, Japan, and China all pursuing aggressive policies to support economic growth. Activity in the developed markets was relatively flat as economic data continued to be indecisive with respect to the state of the global economy. As the period progressed, markets saw a pick-up in volatility as data indicated continued strengthening of the U.S. economy and speculation increased that the U.S. Federal Reserve (the Fed) would raise its benchmark interest rate before the end of 2016. The Fed eventually did increase rates by 0.25% in the middle of December. Equity markets as well as interest rates would rise sharply in the wake of the unanticipated U.S. election outcome, which resulted in Republican control of the White House and both houses of Congress. The results of the election led to speculation that economic growth would strengthen going forward based on the new Trump administration's expressed goals of cutting taxes, reducing regulations, and increasing infrastructure spending. In late November, the OPEC (Organization of Petroleum Exporting Countries) cartel announced an agreement to limit oil production, thus stabilizing the outlooks for the energy sector and for a number of emerging markets economies. Global sentiment towards riskier assets dampened somewhat in early December, though, when a referendum on Italian constitutional reform failed, leading the Prime Minister Renzi to resign. Viewed in conjunction with the results of the earlier "Brexit" referendum in the United Kingdom last June, the defeat of the Italian referendum renewed broader market concerns about the effects of rising populist movements on the future of the euro zone, which is the world's second-largest economic bloc. As noted earlier, in the middle of the December the Fed implemented a 0.25% interest-rate hike, as expected, which raised the influential Federal funds rate's target to a range of 0.50% to 0.75%. The Fed also signalled that it might enact as many as three more, very similar rate increases in 2017. Over the full six months, global equities in aggregate returned 4.95%, as measured by the MSCI World ND Index. The U.S. equity market returned 5.96%, as measured by the Standard & Poor's 500 Index, outperforming international equities, which returned 3.49%, as gauged by the MSCI Pioneer Solutions Funds | Semiannual Report | 1/31/17 5 Europe, Australasia, Far East Index. Emerging markets, as measured by the MSCI Emerging Markets Index, returned 4.92% during the six-month period. Within the U.S., small-cap stocks outperformed their large-cap counterparts, while value stocks outperformed growth-oriented stocks. Based largely on the post-U.S. election spike in interest rates, fixed-income markets finished in negative territory, returning -2.95% as measured by the Bloomberg Barclays U.S. Aggregate Bond Index, the most popular measure of the performance of the U.S. bond market. Q Can you review your overall investment approach taken with respect to management of the Funds? A We allocate the assets of each Fund within broad strategic guidelines designed to address a particular investor risk profile. In seeking to gain the desired exposures in the portfolios to U.S. equities, international equities, bonds, and cash, we utilize a broad selection of mutual funds. Under this approach, we typically incorporate into the portfolios a substantial representation of carefully selected mutual funds managed by Pioneer, and by other, third-party managers. In addition, we use derivative positions, which we discuss in more detail later in this report, to help manage exposures and the overall risk/reward profile for each Fund. Importantly, we manage each Fund with an eye toward the allocation of a "risk budget," rather than under a straightforward asset allocation approach. This reflects the fact that the majority of the risk embedded in an equally weighted bond and equity portfolio is concentrated within the equity component. Q What considerations and tactical shifts did you apply to the Funds' asset allocations during the six-month period ended January 31, 2017? A For most of the period, we maintained the Funds' allocations to equities at a neutral level. Within the Funds' equity allocations, we maintained a bias toward the U.S. and Japan relative to Europe. After the U.S. presidential election, we decided to tilt the portfolios toward value within U.S. equities. With respect to the Funds' fixed-income allocations, toward the end of the period we trimmed the portfolios' overweights to below-investment-grade, high-yield corporate bonds, while increasing exposures to U.S. bond funds with flexible investment approaches. Q How did your allocations and investment strategies for the Funds affect their performance during the six-month period ended January 31, 2017? A On the whole, security selection results within the Funds' U.S. equity allocations detracted from returns, with the earlier tilt in the portfolios toward growth-oriented issues the main negative factor. Underweights to European equities as well as stock selection results in that segment of the 6 Pioneer Solutions Funds | Semiannual Report | 1/31/17 market also detracted from the Funds' performance. Finally, overweight allocations to U.S. real estate investment trusts (REITs) had a negative impact on each Fund's performance during the period. Across the portfolios, positive contributions to performance came from security selection within the fixed-income allocations and from overweight exposures to both high-yield and inflation-protected bonds. In addition, the shorter-duration positioning within each Fund's fixed-income allocations helped to buffer performance as Treasury yields spiked following the U.S. election. (Duration is a measure of the sensitivity of the price, or the value of principal, of a fixed-income investment to a change in interest rates, expressed as a number of years.) In addition, overweighting both U.S. and Japanese equities aided the Funds' performance during the period. In the Conservative Fund, the portfolio's macroeconomic-based asset allocation strategy detracted from relative performance. In addition, our relative-value trades across the different asset classes was a small detractor from the Fund's performance during the period. On the positive side, the Conservative Fund's performance benefited from a core position in Pioneer Strategic Income Fund, along with allocations to a number of other flexible bond portfolios. Short-duration positioning and long credit-spread exposure in the fixed-income portion of the portfolio also added value. (Credit spreads are commonly defined as the differences in yield between Treasuries and other types of fixed-income securities with similar maturities.) Also within the Conservative Fund, we saw positive performance from an overweight to Japanese equities and a long stance on U.S. inflation, combined with an underweight to European equities. In the Balanced Fund, the Fund's relative performance was constrained by an underweight position in European equities and by weak overall selection results, particularly with respect to U.S. mutual funds, where our earlier tilt toward growth relative to value detracted from relative returns. Positive performance contributors included exposures to Pioneer Strategic Income Fund and Pioneer Dynamic Credit Fund. In addition, overweight allocations to U.S. and Japanese equities, both of which rallied in the wake of the U.S. election results, aided the Fund's returns. The Balanced Fund's overweights to U.S. inflation-linked securities and high-yield bonds were also beneficial for relative returns. In the Growth Fund, the portfolio's exposures to U.S. and European equity funds detracted from the Fund's results during the period, as did our overall asset allocation decisions based on macroeconomic factors. The Fund's underperformance in that segment derived largely from an overweight portfolio exposure to real estate-oriented investments such as REITs. On the positive side, security selection results - mainly in the fixed-income portion of the portfolio - benefited the Growth Fund's relative Pioneer Solutions Funds | Semiannual Report | 1/31/17 7 performance. Meanwhile, allocations to Pioneer International Equity Fund and Pioneer Global Equity Fund also contributed to the Fund's returns. Finally, from an asset allocation perspective, the principal positive contributor to the Growth Fund's relative performance during the period was an overweight to Japanese equities. Q The Funds have the ability to invest in derivatives. Did you use derivatives as part of your investment strategy during the six-month period ended January 31, 2017, and did those positions have a material effect on performance? A We will use derivatives regularly in an effort to execute our investment strategies for each fund in an efficient manner, including to gain or trim market exposures in the portfolios and to implement relative-value trades. In particular, during the six-month period, we used derivatives such as futures, foreign forward currency contracts, options, and swaps to manage the portfolios' overlay durations and corresponding interest-rate sensitivity. As noted earlier, the Funds' shorter-duration positioning contributed positively to relative performance. Q What factors are you watching most closely as you determine strategy for the Funds going forward? A Our base-case scenario is for reasonable economic growth and moderate consumer price inflation. Concerns about U.S. monetary, budgetary, and trade policies will likely garner the most attention in the financial markets over the next several months, together with the heavy political calendar in Europe. In the U.S., the main questions are how much of President Trump's proposed supply-and-demand-side economic policies will become law, and how will they affect economic growth and U.S. inflation rates? We expect the Fed to monitor the evolution of economic policies and consumer prices, given that the U.S. has now achieved what is considered full employment status. While financial markets seem to expect a very gradual tightening of monetary conditions, U.S. policymakers could surprise on the upside if they feel that inflationary pressure is building. In Europe, there are major elections scheduled in the countries representing the two largest European Union economies: France over the course of April and May, and Germany in September of 2017. The rising support for extremist parties on both sides of the political spectrum in Europe has increased the level of uncertainty about the election outcomes in both countries. 8 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Please refer to the Schedule of Investments on pages 36-47 for a full listing of fund securities. All investments are subject to risk, including the possible loss of principal. In the past several years, financial markets have experienced increased volatility, depressed valuations, decreased liquidity and heightened uncertainty. These conditions may continue, recur, worsen or spread. Each portfolio in Pioneer Solutions Funds is a "fund-of-funds" which seeks to achieve its investment objectives by investing primarily in other funds ("the underlying funds") managed by Pioneer or one of its affiliates, rather than by taking direct positions in securities. The Solutions Funds' performance depend on the adviser's skill in determining the strategic asset allocations, the mix of underlying funds, as well as the performance of those underlying funds. The underlying funds' performance may be lower than the performance of the asset class that they were selected to represent. In addition to the Funds' operating expenses, investors will indirectly bear the operating expenses of investments in any underlying funds. Each of the underlying funds has its own investment risks. At times, the Funds' investments may represent industries or sectors that are interrelated or have common risks, making them more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. Investments in equity securities are subject to price fluctuation. When interest rates rise, the prices of fixed income securities in the funds will generally fall. Conversely, when interest rates fall, the prices of fixed income securities in the funds will generally rise. Investments in the Funds are subject to possible loss due to the financial failure of issuers of underlying securities and their inability to meet their debt obligations. Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, economic, and political conditions. The portfolios may invest in underlying funds with exposure to REIT securities, the value of which can fall for a variety of reasons, such as declines in rental income, fluctuating interest rates, poor property management, environmental liabilities, uninsured damage, increased competition, or changes in real estate tax laws. The Funds may invest in underlying funds with exposure to commodities. The value of commodity-linked derivatives may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, factors affecting a particular industry or commodity, international economic, political and regulatory developments, supply and demand, and governmental regulatory policies. The Funds may use derivatives, such as options, futures, inverse floating rate obligations, swaps, and others, which can be illiquid, may disproportionately increase losses, and have a potentially large impact on fund performance. Derivatives may have a leveraging effect on the Fund. Pioneer Solutions Funds | Semiannual Report | 1/31/17 9 The Funds may invest in credit default swaps, which may in some cases be illiquid, and they increase credit risk since the fund has exposure to both the issuer of the referenced obligation and the counterparty to the credit default swap. The Funds and some of the underlying funds employ leverage, which increases the volatility of investment returns and subjects the Funds to magnified losses if an underlying fund's investments decline in value. The Funds and some of the underlying funds may employ short selling, a speculative strategy. Unlike the possible loss on a security that is purchased, there is no limit on the amount of loss on an appreciating security that is sold short. The value of the investments held by the Funds for cash management or temporary defensive purposes may be affected by market risks, changing interest rates, and by changes in credit ratings of the investments. If the Funds hold cash that is uninvested, the Funds will not earn income on the cash and the Funds' yields will go down. These risks may increase share price volatility. There is no assurance that these and other strategies used by the Funds will be successful. Please see the prospectus for a more complete discussion of the Funds' risks. Before making an investment in any fund, you should consider all the risks associated with it. Please see the Fund Reviews beginning on page 11 for information on specific weightings and performance for each of the funds. Before investing, consider the product's investment objectives, risks, charges and expenses. Contact your advisor or Pioneer Investments for a prospectus or summary prospectus containing this information. Read it carefully. Any information in this shareowner report regarding market or economic trends or the factors influencing each fund's historical or future performance are statements of opinion as of the date of this report. Past performance is no guarantee of future results. 10 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Fund Reviews | 1/31/17 Portfolio Allocations Pioneer Solutions - Conservative Fund As of January 31, 2017, the Fund had an allocation of 19.9% equities and 80.1% fixed income. Within the fixed-income portion of the Fund, the largest holding at the end of the period was in Pioneer Bond Fund, at 28.2% of assets, followed by Pioneer Strategic Income Fund, at 26.0% of assets. The largest equity positions in the portfolio at period end were in Pioneer Disciplined Value Fund, at 2.1% of assets, followed by Pioneer Mid Cap Value Fund, at 1.6% of assets. Pioneer Solutions - Balanced Fund As of January 31, 2017, the Fund had an allocation of 54.4% equities, 45.5% fixed income, with the rest in option contracts. Within the fixed-income portion of the Fund, the largest holding at the end of the period was in Pioneer Bond Fund, at 11.0% of assets, followed by Pioneer Strategic Income Fund, at 8.0% of assets. The largest equity positions in the portfolio at period end were in Pioneer Disciplined Value Fund, at 6.0% of assets, followed by Pioneer Mid Cap Value Fund, at 4.4% of assets. Pioneer Solutions - Growth Fund As of January 31, 2017, the Fund had an allocation of 77.9% equities, 21.3% fixed income, with the rest in option contracts. Within the fixed-income portion of the Fund, the largest holding at the end of the period was in Pioneer Bond Fund, at 7.4% of assets, followed by Columbia Contrarian Core Fund, at 4.0% of assets. The largest equity positions in the portfolio at period end were in Pioneer Disciplined Value Fund, at 9.1% of assets, followed by Pioneer Mid Cap Value Fund, at 6.6% of assets. Pioneer Solutions Funds | Semiannual Report | 1/31/17 11 Comparing Ongoing Fund Expenses Pioneer Solutions - Conservative Fund 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 Solutions Conservative Fund Based on actual returns from August 1, 2016 through January 31, 2017. ------------------------------------------------------------------------------------ Share Class A C R Y ------------------------------------------------------------------------------------ Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 8/1/16 ------------------------------------------------------------------------------------ Ending Account Value $ 997.80 $ 994.40 $ 996.70 $ 997.60 (after expenses) on 1/31/17 ------------------------------------------------------------------------------------ Expenses Paid $ 3.52 $ 7.29 $ 4.53 $ 3.27 During Period* ------------------------------------------------------------------------------------ * Expenses are equal to the Fund's annualized net expense ratio of 0.70%, 1.45%, 0.90% and 0.65% for Class A, C, R and Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/365 to reflect the one half-year period. Fund expense ratios do not include estimates for acquired fund fees and expenses (AFFE). If AFFE estimates were included, expenses paid during the period would have been $6.60, $10.36, $7.60 and $6.34 for Class A, C, R and Y shares, respectively, based on the respective expense ratio for each class of 1.31%, 2.06%, 1.51% and 1.26%. 12 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Solutions Conservative Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from August 1, 2016 through January 31, 2017. ------------------------------------------------------------------------------------ Share Class A C R Y ------------------------------------------------------------------------------------ Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 8/1/16 ------------------------------------------------------------------------------------ Ending Account Value $ 1,021.68 $ 1,017.90 $ 1,020.67 $ 1,021.93 (after expenses) on 1/31/17 ------------------------------------------------------------------------------------ Expenses Paid $ 3.57 $ 7.37 $ 4.58 $ 3.31 During Period* ------------------------------------------------------------------------------------ * Expenses are equal to the Fund's annualized net expense ratio of 0.70%, 1.45%, 0.90% and 0.65% for Class A, C, R and Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/365 to reflect the one half-year period. Fund expense ratios do not include estimates for acquired fund fees and expenses (AFFE). If AFFE estimates were included, expenses paid during the period would have been $6.67, $10.46, $7.68 and $6.41 for Class A, C, R and Y shares, respectively, based on the respective expense ratio for each class of 1.31%, 2.06%, 1.51% and 1.26%. Pioneer Solutions Funds | Semiannual Report | 1/31/17 13 Comparing Ongoing Fund Expenses Pioneer Solutions - Balanced Fund 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 Solutions Balanced Fund Based on actual returns from August 1, 2016 through January 31, 2017. ------------------------------------------------------------------------------------ Share Class A C R Y ------------------------------------------------------------------------------------ Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 8/1/16 ------------------------------------------------------------------------------------ Ending Account Value $ 1,010.10 $ 1,007.10 $ 1,010.20 $ 1,011.90 (after expenses) on 1/31/17 ------------------------------------------------------------------------------------ Expenses Paid $ 3.34 $ 6.93 $ 4.56 $ 2.43 During Period* ------------------------------------------------------------------------------------ * Expenses are equal to the Fund's annualized net expense ratio of 0.66%, 1.37%, 0.90% and 0.48% for Class A, C, R and Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/365 to reflect the one half-year period. Fund expense ratios do not include estimates for acquired fund fees and expenses (AFFE). If AFFE estimates were included, expenses paid during the period would have been $6.99, $10.57, $8.21 and $6.09 for Class A, C, R and Y shares, respectively, based on the respective expense ratio for each class of 1.38%, 2.09%, 1.62% and 1.20%. 14 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Solutions Balanced Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from August 1, 2016 through January 31, 2017. ------------------------------------------------------------------------------------ Share Class A C R Y ------------------------------------------------------------------------------------ Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 8/1/16 ------------------------------------------------------------------------------------ Ending Account Value $ 1,021.88 $ 1,018.30 $ 1,020.67 $ 1,022.79 (after expenses) on 1/31/17 ------------------------------------------------------------------------------------ Expenses Paid $ 3.36 $ 6.97 $ 4.58 $ 2.45 During Period* ------------------------------------------------------------------------------------ * Expenses are equal to the Fund's annualized net expense ratio of 0.66%, 1.37%, 0.90% and 0.48% for Class A, C, R and Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/365 to reflect the one half-year period. Fund expense ratios do not include estimates for acquired fund fees and expenses (AFFE). If AFFE estimates were included, expenses paid during the period would have been $7.02, $10.61, $8.24 and $6.11 for Class A, C, R and Y shares, respectively, based on the respective expense ratio for each class of 1.38%, 2.09%, 1.62% and 1.20%. Pioneer Solutions Funds | Semiannual Report | 1/31/17 15 Comparing Ongoing Fund Expenses Pioneer Solutions - Growth Fund 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 Solutions Growth Fund Based on actual returns from August 1, 2016 through January 31, 2017. ------------------------------------------------------------------------------------ Share Class A C R Y ------------------------------------------------------------------------------------ Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 8/1/16 ------------------------------------------------------------------------------------ Ending Account Value $ 1,029.00 $ 1,035.90 $ 1,027.80 $ 1,029.90 (after expenses) on 1/31/17 ------------------------------------------------------------------------------------ Expenses Paid $ 3.27 $ 6.93 $ 4.60 $ 2.25 During Period* ------------------------------------------------------------------------------------ * Expenses are equal to the Fund's annualized net expense ratio of 0.64%, 1.35%, 0.90% and 0.44% for Class A, C, R and Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/365 to reflect the one half-year period. Fund expense ratios do not include estimates for acquired fund fees and expenses (AFFE). If AFFE estimates were included, expenses paid during the period would have been $7.11, $10.78, $8.43 and $6.09 for Class A, C, R and Y shares, respectively, based on the respective expense ratio for each class of 1.39%, 2.10%, 1.65% and 1.19%. 16 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Solutions Growth Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from August 1, 2016 through January 31, 2017. ------------------------------------------------------------------------------------ Share Class A C R Y ------------------------------------------------------------------------------------ Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 8/1/16 ------------------------------------------------------------------------------------ Ending Account Value $ 1,021.98 $ 1,018.40 $ 1,020.67 $ 1,022.99 (after expenses) on 1/31/17 ------------------------------------------------------------------------------------ Expenses Paid $ 3.26 $ 6.87 $ 4.58 $ 2.24 During Period* ------------------------------------------------------------------------------------ * Expenses are equal to the Fund's annualized net expense ratio of 0.64%, 1.35%, 0.90% and 0.44% for Class A, C, R and Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/365 to reflect the one half-year period. Fund expense ratios do not include estimates for acquired fund fees and expenses (AFFE). If AFFE estimates were included, expenses paid during the period would have been $7.07, $10.66, $8.39 and $6.06 for Class A, C, R and Y shares, respectively, based on the respective expense ratio for each class of 1.39%, 2.10%, 1.65% and 1.19%. Pioneer Solutions Funds | Semiannual Report | 1/31/17 17 Prices and Distributions | 1/31/17 Net Asset Value per Share -------------------------------------------------------------------------------- Conservative Fund -------------------------------------------------------------------------------- Class 1/31/17 7/31/16 -------------------------------------------------------------------------------- A $ 10.15 $ 10.41 -------------------------------------------------------------------------------- C $ 9.85 $ 10.06 -------------------------------------------------------------------------------- R $ 10.13 $ 10.38 -------------------------------------------------------------------------------- Y $ 9.56 $ 9.83 -------------------------------------------------------------------------------- Balanced Fund -------------------------------------------------------------------------------- Class 1/31/17 7/31/16 -------------------------------------------------------------------------------- A $ 11.22 $ 11.35 -------------------------------------------------------------------------------- C $ 10.35 $ 10.44 -------------------------------------------------------------------------------- R $ 11.18 $ 11.30 -------------------------------------------------------------------------------- Y $ 11.37 $ 11.51 -------------------------------------------------------------------------------- Growth Fund -------------------------------------------------------------------------------- Class 1/31/17 7/31/16 -------------------------------------------------------------------------------- A $ 12.49 $ 12.36 -------------------------------------------------------------------------------- C $ 11.78 $ 11.63 -------------------------------------------------------------------------------- R $ 12.42 $ 12.30 -------------------------------------------------------------------------------- Y $ 12.74 $ 12.63 -------------------------------------------------------------------------------- 18 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Distributions per Share: 8/1/16-1/31/17 -------------------------------------------------------------------------------- Conservative Fund -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains -------------------------------------------------------------------------------- A $ 0.2350 $ -- $ -- -------------------------------------------------------------------------------- C $ 0.1527 $ -- $ -- -------------------------------------------------------------------------------- R $ 0.2142 $ -- $ -- -------------------------------------------------------------------------------- Y $ 0.2444 $ -- $ -- -------------------------------------------------------------------------------- Balanced Fund -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains -------------------------------------------------------------------------------- A $ 0.2400 $ -- $ -- -------------------------------------------------------------------------------- C $ 0.1619 $ -- $ -- -------------------------------------------------------------------------------- R $ 0.2307 $ -- $ -- -------------------------------------------------------------------------------- Y $ 0.2715 $ -- $ -- -------------------------------------------------------------------------------- Growth Fund -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains -------------------------------------------------------------------------------- A $ 0.1579 $ -- $ 0.0656 -------------------------------------------------------------------------------- C $ 0.0714 $ -- $ 0.0656 -------------------------------------------------------------------------------- R $ 0.1515 $ -- $ 0.0656 -------------------------------------------------------------------------------- Y $ 0.1960 $ -- $ 0.0656 -------------------------------------------------------------------------------- Pioneer Solutions Funds | Semiannual Report | 1/31/17 19 Prices and Distributions | 1/31/17 (continued) Index Definitions -------------------------------------------------------------------------------- The Morgan Stanley Capital International (MSCI) World ND Index is an unmanaged measure of the performance of stock markets in the developed world. The Bloomberg Barclays U.S. Aggregate Bond Index is an unmanaged measure of the U.S. bond market. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. It is not possible to invest directly in an index. The indices defined here pertain to the "Value of $10,000 Investment" and "Value of $5 Million Investment" charts on pages 22-25, 27-30 and 32-35. 20 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Portfolio Summary | 1/31/17 Pioneer Solutions - Conservative Fund Asset Allocations -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] Fixed Income 75.6% International Equity 10.6% U.S. Equity 9.2% U.S. Government and Agency Obligation 2.6% Sovereign Debt Obligation 1.9% Purchased Put Options 0.1% Actual Portfolio Holdings (based on total portfolio)* -------------------------------------------------------------------------------- U.S. Stocks -------------------------------------------------------------------------------- Pioneer Disciplined Value Fund Class Y 2.11% -------------------------------------------------------------------------------- Pioneer Mid Cap Value Fund Class K 1.61 -------------------------------------------------------------------------------- Pioneer Fund Class Y 1.17 -------------------------------------------------------------------------------- Pioneer Fundamental Growth Fund Class K 1.06 -------------------------------------------------------------------------------- Pioneer Core Equity Fund Class Y 1.05 -------------------------------------------------------------------------------- AMG Managers Fairpointe Mid Cap Fund Class I 0.96 -------------------------------------------------------------------------------- Oak Ridge Small Cap Growth Fund Class K 0.66 -------------------------------------------------------------------------------- iShares US Aerospace & Defense ETF 0.58 -------------------------------------------------------------------------------- International Stocks -------------------------------------------------------------------------------- Pioneer Global Equity Fund Class K 4.00% -------------------------------------------------------------------------------- Pioneer International Equity Fund Class Y 3.52 -------------------------------------------------------------------------------- iShares MSCI China ETF 1.29 -------------------------------------------------------------------------------- iShares MSCI Canada ETF 0.67 -------------------------------------------------------------------------------- iShares Core MSCI Emerging Markets ETF 0.54 -------------------------------------------------------------------------------- JOHCM Asia Ex-Japan Equity Fund Class IS 0.39 -------------------------------------------------------------------------------- T. Rowe Price International Funds - European Stock Fund 0.21 -------------------------------------------------------------------------------- Bonds -------------------------------------------------------------------------------- Pioneer Bond Fund Class K 28.16% -------------------------------------------------------------------------------- Pioneer Strategic Income Fund Class K 26.03 -------------------------------------------------------------------------------- MFS Total Return Bond Fund Class I 4.96 -------------------------------------------------------------------------------- Doubleline Total Return Bond Fund Class I 4.93 -------------------------------------------------------------------------------- Western Asset Core Plus Bond Fund Class IS 4.91 -------------------------------------------------------------------------------- Pioneer Dynamic Credit Fund Class Y 2.17 -------------------------------------------------------------------------------- Pioneer Short Term Income Fund Class K 1.08 -------------------------------------------------------------------------------- Columbia Contrarian Core Fund Class Y 0.93 -------------------------------------------------------------------------------- Pioneer Floating Rate Fund Class K 0.80 -------------------------------------------------------------------------------- Pioneer Global Multisector Income Fund Class Y 0.64 -------------------------------------------------------------------------------- Pioneer High Yield Fund Class Y 0.61 -------------------------------------------------------------------------------- Pioneer Global High Yield Fund Class Y 0.36 -------------------------------------------------------------------------------- U.S. Government and Agency Obligations -------------------------------------------------------------------------------- U.S. Treasury Inflation Indexed Note 2.60% -------------------------------------------------------------------------------- Sovereign Debt Obligation -------------------------------------------------------------------------------- Japanese Government CPI Linked Bond 1.94% -------------------------------------------------------------------------------- Purchased Put Options -------------------------------------------------------------------------------- Put EUR Call JPY 0.06% -------------------------------------------------------------------------------- * This list excludes temporary cash investments and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. Pioneer Solutions Funds | Semiannual Report | 1/31/17 21 Performance Update | 1/31/17 Class A Shares Pioneer Solutions - Conservative Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class A shares of Pioneer Solutions - Conservative Fund at public offering price during the periods shown, compared to that of the MSCI World ND Index and the Bloomberg Barclays U.S. Aggregate Bond Index. Average Annual Total Returns (As of January 31, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays Net Public U.S. MSCI Asset Offering Aggregate World Value Price Bond ND Period (NAV) (POP) Index Index -------------------------------------------------------------------------------- 10 years 3.52% 2.91% 4.37% 3.95% 5 years 4.05 2.83 2.09 9.86 1 year 5.13 -0.89 1.45 17.11 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2016) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 1.47% 1.31% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Solutions - Bloomberg Barclays Conservative Fund U.S. Aggregate Bond Index MSCI World ND Index 1/07 $ 9,425 $10,000 $10,000 1/08 $ 9,675 $10,881 $ 9,953 1/09 $ 7,705 $11,162 $ 5,829 1/10 $ 9,674 $12,112 $ 7,962 1/11 $10,744 $12,725 $ 9,492 1/12 $10,920 $13,827 $ 9,208 1/13 $11,823 $14,185 $10,673 1/14 $12,488 $14,202 $12,388 1/15 $13,038 $15,141 $13,255 1/16 $12,667 $15,117 $12,581 1/17 $13,317 $15,337 $14,734 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 5.75% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through December 1, 2018, for Class A shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus for more information. Please see the financial highlights for more recent expense ratios. Expense ratios in the financial highlights, unlike those shown in the prospectus, do not reflect acquired fund fees and expenses. 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. Effective November 17, 2014, Pioneer became directly responsible for portfolio management of the Fund. The performance shown for periods prior to November 17, 2014, reflects the investment strategies employed during those periods. 22 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Performance Update | 1/31/17 Class C Shares Pioneer Solutions - Conservative Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class C shares of Pioneer Solutions - Conservative Fund during the periods shown, compared to that of the MSCI World ND Index and the Bloomberg Barclays U.S. Aggregate Bond Index. Average Annual Total Returns (As of January 31, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays U.S. MSCI Aggregate World If If Bond ND Period Held Redeemed Index Index -------------------------------------------------------------------------------- 10 years 2.69% 2.69% 4.37% 3.95% 5 years 3.29 3.29 2.09 9.86 1 year 4.43 4.43 1.45 17.11 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2016) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.20% 2.06% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Solutions - Bloomberg Barclays MSCI World Conservative Fund U.S. Aggregate Bond Index ND Index 1/07 $10,000 $10,000 $10,000 1/08 $10,175 $10,881 $ 9,953 1/09 $ 8,017 $11,162 $ 5,829 1/10 $ 9,960 $12,112 $ 7,962 1/11 $10,996 $12,725 $ 9,492 1/12 $11,089 $13,827 $ 9,208 1/13 $11,903 $14,185 $10,673 1/14 $12,497 $14,202 $12,388 1/15 $12,947 $15,141 $13,255 1/16 $12,482 $15,117 $12,581 1/17 $13,035 $15,337 $14,734 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through December 1, 2018, for Class C shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus for more information. Please see the financial highlights for more recent expense ratios. Expense ratios in the financial highlights, unlike those shown in the prospectus, do not reflect acquired fund fees and expenses. 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. Effective November 17, 2014, Pioneer became directly responsible for portfolio management of the Fund. The performance shown for periods prior to November 17, 2014, reflects the investment strategies employed during those periods. Pioneer Solutions Funds | Semiannual Report | 1/31/17 23 Performance Update | 1/31/17 Class R Shares Pioneer Solutions - Conservative Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class R shares of Pioneer Solutions - Conservative Fund during the periods shown, compared to that of the MSCI World ND Index and the Bloomberg Barclays U.S. Aggregate Bond Index. Average Annual Total Returns (As of January 31, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays Net U.S. MSCI Asset Aggregate World Value Bond ND Period (NAV) Index Index -------------------------------------------------------------------------------- 10 years 3.48% 4.37% 3.95% 5 years 3.98 2.09 9.86 1 year 4.93 1.45 17.11 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2016) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.11% 1.51% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Solutions - Bloomberg Barclays MSCI World Conservative Fund U.S. Aggregate Bond Index ND Index 1/07 $10,000 $10,000 $10,000 1/08 $10,264 $10,881 $ 9,953 1/09 $ 8,174 $11,162 $ 5,829 1/10 $10,263 $12,112 $ 7,962 1/11 $11,398 $12,725 $ 9,492 1/12 $11,584 $13,827 $ 9,208 1/13 $12,543 $14,185 $10,673 1/14 $13,248 $14,202 $12,388 1/15 $13,831 $15,141 $13,255 1/16 $13,419 $15,117 $12,581 1/17 $14,081 $15,337 $14,734 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. The performance shown for Class R shares for the period prior to the commencement of operations of Class R shares on July 1, 2015, is the net asset value performance of the Fund's Class A shares, which has not been restated to reflect any differences in expenses, including Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares generally are higher than those of Class R shares, the performance of Class R shares prior to their inception would have been higher than the performance shown. For the period beginning July 1, 2015, the actual performance of Class R shares is reflected. Class R shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through December 1, 2018, for Class R shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. Please see the financial highlights for more recent expense ratios. Expense ratios in the financial highlights, unlike those shown in the prospectus, do not reflect acquired fund fees and expenses. 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. Effective November 17, 2014, Pioneer became directly responsible for portfolio management of the Fund. The performance shown for periods prior to November 17, 2014, reflects the investment strategies employed during those periods. 24 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Performance Update | 1/31/17 Class Y Shares Pioneer Solutions - Conservative Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Class Y shares of Pioneer Solutions - Conservative Fund during the periods shown, compared to that of the MSCI World ND Index and the Bloomberg Barclays U.S. Aggregate Bond Index. Average Annual Total Returns (As of January 31, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays Net U.S. MSCI Asset Aggregate World Value Bond ND Period (NAV) Index Index -------------------------------------------------------------------------------- 10 years 2.53% 4.37% 3.95% 5 years 3.62 2.09 9.86 1 year 5.22 1.45 17.11 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2016) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 1.43% 1.26% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Solutions - Bloomberg Barclays MSCI World Conservative Fund U.S. Aggregate Bond Index ND Index 1/07 $5,000,000 $5,000,000 $5,000,000 1/08 $5,121,189 $5,440,411 $4,976,401 1/09 $3,956,250 $5,581,213 $2,914,645 1/10 $4,766,670 $6,055,972 $3,980,851 1/11 $5,309,730 $6,362,436 $4,745,794 1/12 $5,373,470 $6,913,559 $4,603,817 1/13 $5,753,075 $7,092,310 $5,336,255 1/14 $6,051,333 $7,101,101 $6,193,899 1/15 $6,294,834 $7,570,672 $6,627,377 1/16 $6,101,435 $7,558,552 $6,290,599 1/17 $6,419,902 $7,668,374 $7,367,005 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class 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 shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through December 1, 2018, for Class Y shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus for more information. Please see the financial highlights for more recent expense ratios. Expense ratios in the financial highlights, unlike those shown in the prospectus, do not reflect acquired fund fees and expenses. 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. Effective November 17, 2014, Pioneer became directly responsible for portfolio management of the Fund. The performance shown for periods prior to November 17, 2014, reflects the investment strategies employed during those periods. Pioneer Solutions Funds | Semiannual Report | 1/31/17 25 Portfolio Summary | 1/31/17 Pioneer Solutions - Balanced Fund Asset Allocations -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] Fixed Income 40.9% International Equity 29.5% U.S. Equity 24.9% U.S. Government and Agency Obligation 2.6% Sovereign Debt Obligation 2.0% Purchased Put Options 0.1% Actual Portfolio Holdings (based on total portfolio)* -------------------------------------------------------------------------------- U.S. Stocks -------------------------------------------------------------------------------- Pioneer Disciplined Value Fund Class Y 5.97% -------------------------------------------------------------------------------- Pioneer Mid Cap Value Fund Class K 4.44 -------------------------------------------------------------------------------- Pioneer Fund Class Y 3.37 -------------------------------------------------------------------------------- Pioneer Core Equity Fund Class Y 3.03 -------------------------------------------------------------------------------- Pioneer Fundamental Growth Fund Class K 2.94 -------------------------------------------------------------------------------- AMG Managers Fairpointe Mid Cap Fund Class I 2.62 -------------------------------------------------------------------------------- Oak Ridge Small Cap Growth Fund Class K 1.95 -------------------------------------------------------------------------------- iShares US Aerospace & Defense ETF 0.53 -------------------------------------------------------------------------------- International Stocks -------------------------------------------------------------------------------- Pioneer International Equity Fund Class Y 14.43% -------------------------------------------------------------------------------- Pioneer Global Equity Fund Class K 9.40 -------------------------------------------------------------------------------- T. Rowe Price International Funds - European Stock Fund 1.92 -------------------------------------------------------------------------------- iShares MSCI Canada ETF 1.66 -------------------------------------------------------------------------------- iShares MSCI China ETF 1.29 -------------------------------------------------------------------------------- iShares Core MSCI Emerging Markets ETF 0.53 -------------------------------------------------------------------------------- JOHCM Asia Ex-Japan Equity Fund Class IS 0.29 -------------------------------------------------------------------------------- Bonds -------------------------------------------------------------------------------- Pioneer Bond Fund Class K 10.98% -------------------------------------------------------------------------------- Pioneer Strategic Income Fund Class K 7.99 -------------------------------------------------------------------------------- Doubleline Total Return Bond Fund Class I 5.05 -------------------------------------------------------------------------------- MFS Total Return Bond Fund Class I 3.95 -------------------------------------------------------------------------------- Western Asset Core Plus Bond Fund Class IS 3.94 -------------------------------------------------------------------------------- Pioneer Dynamic Credit Fund Class Y 3.07 -------------------------------------------------------------------------------- Columbia Contrarian Core Fund Class Y 2.59 -------------------------------------------------------------------------------- Pioneer Global High Yield Fund Class Y 1.83 -------------------------------------------------------------------------------- Pioneer Global Multisector Income Fund Class Y 1.53 -------------------------------------------------------------------------------- Pioneer High Yield Fund Class Y 0.00+ -------------------------------------------------------------------------------- U.S. Government and Agency Obligations -------------------------------------------------------------------------------- U.S. Treasury Inflation Indexed Note 2.59% -------------------------------------------------------------------------------- Sovereign Debt Obligation -------------------------------------------------------------------------------- Japanese Government CPI Linked Bond 2.00% -------------------------------------------------------------------------------- Purchased Put Options -------------------------------------------------------------------------------- Put EUR Call JPY 0.11% -------------------------------------------------------------------------------- +Amount rounds to less than 0.1%. *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. 26 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Performance Update | 1/31/17 Class A Shares Pioneer Solutions - Balanced Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class A shares of Pioneer Solutions - Balanced Fund at public offering price during the periods shown, compared to that of the MSCI World ND Index and the Bloomberg Barclays U.S. Aggregate Bond Index. Average Annual Total Returns (As of January 31, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays Net Public U.S. MSCI Asset Offering Aggregate World Value Price Bond ND Period (NAV) (POP) Index Index -------------------------------------------------------------------------------- 10 years 3.32% 2.72% 4.37% 3.95% 5 years 5.45 4.21 2.09 9.86 1 year 7.34 1.09 1.45 17.11 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2016) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 1.39% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Solutions - Bloomberg Barclays MSCI World Balanced Fund U.S. Aggregate Bond Index ND Index 1/07 $ 9,425 $10,000 $10,000 1/08 $ 9,389 $10,881 $ 9,953 1/09 $ 6,543 $11,162 $ 5,829 1/10 $ 8,634 $12,112 $ 7,962 1/11 $ 9,969 $12,725 $ 9,492 1/12 $10,024 $13,827 $ 9,208 1/13 $10,988 $14,185 $10,673 1/14 $12,121 $14,202 $12,388 1/15 $12,756 $15,141 $13,255 1/16 $12,178 $15,117 $12,581 1/17 $13,072 $15,337 $14,734 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of the maximum 5.75% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown 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. Please see the financial highlights for more recent expense ratios. Expense ratios in the financial highlights, unlike those shown in the prospectus, do not reflect acquired fund fees and expenses. 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. Effective November 17, 2014, Pioneer became directly responsible for portfolio management of the Fund. The performance shown for periods prior to November 17, 2014, reflects the investment strategies employed during those periods. Pioneer Solutions Funds | Semiannual Report | 1/31/17 27 Performance Update | 1/31/17 Class C Shares Pioneer Solutions - Balanced Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class C shares of Pioneer Solutions - Balanced Fund during the periods shown, compared to that of the MSCI World ND Index and the Bloomberg Barclays U.S. Aggregate Bond Index. Average Annual Total Returns (As of January 31, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays U.S. MSCI Aggregate World If If Bond ND Period Held Redeemed Index Index -------------------------------------------------------------------------------- 10 years 2.59% 2.59% 4.37% 3.95% 5 years 4.74 4.74 2.09 9.86 1 year 6.64 6.64 1.45 17.11 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2016) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 2.09% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Solutions - Bloomberg Barclays MSCI World Balanced Fund U.S. Aggregate Bond Index ND Index 1/07 $10,000 $10,000 $10,000 1/08 $ 9,888 $10,881 $ 9,953 1/09 $ 6,837 $11,162 $ 5,829 1/10 $ 8,956 $12,112 $ 7,962 1/11 $10,265 $12,725 $ 9,492 1/12 $10,244 $13,827 $ 9,208 1/13 $11,149 $14,185 $10,673 1/14 $12,224 $14,202 $12,388 1/15 $12,770 $15,141 $13,255 1/16 $12,111 $15,117 $12,581 1/17 $12,915 $15,337 $14,734 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown 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. Please see the financial highlights for more recent expense ratios. Expense ratios in the financial highlights, unlike those shown in the prospectus, do not reflect acquired fund fees and expenses. 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. Effective November 17, 2014, Pioneer became directly responsible for portfolio management of the Fund. The performance shown for periods prior to November 17, 2014, reflects the investment strategies employed during those periods. 28 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Performance Update | 1/31/17 Class R Shares Pioneer Solutions - Balanced Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class R shares of Pioneer Solutions - Balanced Fund during the periods shown, compared to that of the MSCI World ND Index and the Bloomberg Barclays U.S. Aggregate Bond Index. Average Annual Total Returns (As of January 31, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays Net U.S. MSCI Asset Aggregate World Value Bond ND Period (NAV) Index Index -------------------------------------------------------------------------------- 10 years 3.30% 4.37% 3.95% 5 years 5.41 2.09 9.86 1 year 7.08 1.45 17.11 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2016) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 2.30% 1.62% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Solutions - Bloomberg Barclays MSCI World Balanced Fund U.S. Aggregate Bond Index ND Index 1/07 $10,000 $10,000 $10,000 1/08 $ 9,959 $10,881 $ 9,953 1/09 $ 6,940 $11,162 $ 5,829 1/10 $ 9,159 $12,112 $ 7,962 1/11 $10,574 $12,725 $ 9,492 1/12 $10,632 $13,827 $ 9,208 1/13 $11,655 $14,185 $10,673 1/14 $12,857 $14,202 $12,388 1/15 $13,530 $15,141 $13,255 1/16 $12,919 $15,117 $12,581 1/17 $13,834 $15,337 $14,734 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. The performance shown for Class R shares for the period prior to the commencement of operations of Class R shares on July 1, 2015, is the net asset value performance of the Fund's Class A shares, which has not been restated to reflect any differences in expenses, including Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares generally are higher than those of Class R shares, the performance of Class R shares prior to their inception would have been higher than the performance shown. For the period beginning July 1, 2015, the actual performance of Class R shares is reflected. Class R shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through December 1, 2018, for Class R shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. Please see the financial highlights for more recent expense ratios. Expense ratios in the financial highlights, unlike those shown in the prospectus, do not reflect acquired fund fees and expenses. 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. Effective November 17, 2014, Pioneer became directly responsible for portfolio management of the Fund. The performance shown for periods prior to November 17, 2014, reflects the investment strategies employed during those periods. Pioneer Solutions Funds | Semiannual Report | 1/31/17 29 Performance Update | 1/31/17 Class Y Shares Pioneer Solutions - Balanced Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Class Y shares of Pioneer Solutions - Balanced Fund during the periods shown, compared to that of the MSCI World ND Index and the Bloomberg Barclays U.S. Aggregate Bond Index. Average Annual Total Returns (As of January 31, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays Net U.S. MSCI Asset Aggregate World Value Bond ND Period (NAV) Index Index -------------------------------------------------------------------------------- 10 years 3.75% 4.37% 3.95% 5 years 5.75 2.09 9.86 1 year 7.64 1.45 17.11 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2016) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 1.12% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Solutions - Bloomberg Barclays MSCI World Balanced Fund U.S. Aggregate Bond Index ND Index 1/07 $5,000,000 $5,000,000 $5,000,000 1/08 $4,997,322 $5,440,411 $4,976,401 1/09 $3,512,300 $5,581,213 $2,914,645 1/10 $4,669,742 $6,055,972 $3,980,851 1/11 $5,414,182 $6,362,436 $4,745,794 1/12 $5,463,063 $6,913,559 $4,603,817 1/13 $6,005,949 $7,092,310 $5,336,255 1/14 $6,644,499 $7,101,101 $6,193,899 1/15 $7,010,968 $7,570,672 $6,627,377 1/16 $6,712,261 $7,558,552 $6,290,599 1/17 $7,224,900 $7,668,374 $7,367,005 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class 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 shown 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. Please see the financial highlights for more recent expense ratios. Expense ratios in the financial highlights, unlike those shown in the prospectus, do not reflect acquired fund fees and expenses. 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. Effective November 17, 2014, Pioneer became directly responsible for portfolio management of the Fund. The performance shown for periods prior to November 17, 2014, reflects the investment strategies employed during those periods. 30 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Portfolio Summary | 1/31/17 Pioneer Solutions - Growth Fund Asset Allocations -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] International Equity 40.7% U.S. Equity 37.2% Fixed Income 16.8% U.S. Government and Agency Obligation 2.5% Sovereign Debt Obligation 2.0% Purchased Put Options 0.7% Purchased Call Options 0.1% Actual Portfolio Holdings (based on total portfolio)* -------------------------------------------------------------------------------- U.S. Stocks -------------------------------------------------------------------------------- Pioneer Disciplined Value Fund Class Y 9.05% -------------------------------------------------------------------------------- Pioneer Mid Cap Value Fund Class K 6.63 -------------------------------------------------------------------------------- Pioneer Fund Class Y 5.05 -------------------------------------------------------------------------------- Pioneer Fundamental Growth Fund Class K 4.54 -------------------------------------------------------------------------------- Pioneer Core Equity Fund Class Y 4.52 -------------------------------------------------------------------------------- AMG Managers Fairpointe Mid Cap Fund Class I 3.99 -------------------------------------------------------------------------------- Oak Ridge Small Cap Growth Fund Class K 2.86 -------------------------------------------------------------------------------- iShares US Aerospace & Defense ETF 0.53 -------------------------------------------------------------------------------- International Stocks -------------------------------------------------------------------------------- Pioneer International Equity Fund Class Y 16.26% -------------------------------------------------------------------------------- Pioneer Global Equity Fund Class K 12.00 -------------------------------------------------------------------------------- JPMorgan Intrepid European Fund Class IS 3.56 -------------------------------------------------------------------------------- T. Rowe Price International Funds - European Stock Fund 3.00 -------------------------------------------------------------------------------- iShares MSCI Canada ETF 2.74 -------------------------------------------------------------------------------- JOHCM Asia Ex-Japan Equity Fund Class IS 1.37 -------------------------------------------------------------------------------- iShares MSCI China ETF 1.26 -------------------------------------------------------------------------------- iShares Core MSCI Emerging Markets ETF 0.51 -------------------------------------------------------------------------------- Bonds -------------------------------------------------------------------------------- Pioneer Bond Fund Class K 7.39% -------------------------------------------------------------------------------- Columbia Contrarian Core Fund Class Y 4.00 -------------------------------------------------------------------------------- Pioneer Strategic Income Fund Class K 3.17 -------------------------------------------------------------------------------- Doubleline Total Return Bond Fund Class I 1.17 -------------------------------------------------------------------------------- Pioneer Global Multisector Income Fund Class Y 1.10 -------------------------------------------------------------------------------- U.S. Government and Agency Obligations -------------------------------------------------------------------------------- U.S. Treasury Inflation Indexed Note 2.52% -------------------------------------------------------------------------------- Sovereign Debt Obligation -------------------------------------------------------------------------------- Japanese Government CPI Linked Bond 1.96% -------------------------------------------------------------------------------- Purchased Put Options -------------------------------------------------------------------------------- Russell 2000 Index 0.48% -------------------------------------------------------------------------------- Put EUR Call JPY 0.23 -------------------------------------------------------------------------------- S&P 500 Index 0.00+ -------------------------------------------------------------------------------- Purchased Call Options -------------------------------------------------------------------------------- S&P 500 Index 0.11% -------------------------------------------------------------------------------- +Amount rounds to less than 0.1%. *This list excludes temporary cash investments and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. Pioneer Solutions Funds | Semiannual Report | 1/31/17 31 Performance Update | 1/31/17 Class A Shares Pioneer Solutions - Growth Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class A shares of Pioneer Solutions - Growth Fund at public offering price during the periods shown, compared to that of the MSCI World ND Index and the Bloomberg Barclays U.S. Aggregate Bond Index. Average Annual Total Returns (As of January 31, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays Net Public U.S. MSCI Asset Offering Aggregate World Value Price Bond ND Period (NAV) (POP) Index Index -------------------------------------------------------------------------------- 10 years 3.28% 2.67% 4.37% 3.95% 5 years 6.56 5.30 2.09 9.86 1 year 10.12 3.74 1.45 17.11 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2016) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 1.40% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Solutions - Bloomberg Barclays MSCI World Growth Fund U.S. Aggregate Bond Index ND Index 1/07 $ 9,425 $10,000 $10,000 1/08 $ 9,270 $10,881 $ 9,953 1/09 $ 5,962 $11,162 $ 5,829 1/10 $ 8,047 $12,112 $ 7,962 1/11 $ 9,485 $12,725 $ 9,492 1/12 $ 9,470 $13,827 $ 9,208 1/13 $10,439 $14,185 $10,673 1/14 $11,684 $14,202 $12,388 1/15 $12,404 $15,141 $13,255 1/16 $11,814 $15,117 $12,581 1/17 $13,009 $15,337 $14,734 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of the maximum 5.75% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown 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. Please see the financial highlights for more recent expense ratios. Expense ratios in the financial highlights, unlike those shown in the prospectus, do not reflect acquired fund fees and expenses. 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. Effective November 17, 2014, Pioneer became directly responsible for portfolio management of the Fund. The performance shown for periods prior to November 17, 2014, reflects the investment strategies employed during those periods. 32 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Performance Update | 1/31/17 Class C Shares Pioneer Solutions - Growth Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class C shares of Pioneer Solutions - Growth Fund during the periods shown, compared to that of the MSCI World ND Index and the Bloomberg Barclays U.S. Aggregate Bond Index. Average Annual Total Returns (As of January 31, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays U.S. MSCI Aggregate World If If Bond ND Period Held Redeemed Index Index -------------------------------------------------------------------------------- 10 years 2.56% 2.56% 4.37% 3.95% 5 years 5.81 5.81 2.09 9.86 1 year 9.26 9.26 1.45 17.11 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2016) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 2.10% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Solutions - Bloomberg Barclays MSCI World Growth Fund U.S. Aggregate Bond Index ND Index 1/07 $10,000 $10,000 $10,000 1/08 $ 9,769 $10,881 $ 9,953 1/09 $ 6,249 $11,162 $ 5,829 1/10 $ 8,357 $12,112 $ 7,962 1/11 $ 9,783 $12,725 $ 9,492 1/12 $ 9,707 $13,827 $ 9,208 1/13 $10,636 $14,185 $10,673 1/14 $11,822 $14,202 $12,388 1/15 $12,462 $15,141 $13,255 1/16 $11,784 $15,117 $12,581 1/17 $12,875 $15,337 $14,734 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown 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. Please see the financial highlights for more recent expense ratios. Expense ratios in the financial highlights, unlike those shown in the prospectus, do not reflect acquired fund fees and expenses. 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. Effective November 17, 2014, Pioneer became directly responsible for portfolio management of the Fund. The performance shown for periods prior to November 17, 2014, reflects the investment strategies employed during those periods. Pioneer Solutions Funds | Semiannual Report | 1/31/17 33 Performance Update | 1/31/17 Class R Shares Pioneer Solutions - Growth Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Class R shares of Pioneer Solutions - Growth Fund during the periods shown, compared to that of the MSCI World ND Index and the Bloomberg Barclays U.S. Aggregate Bond Index. Average Annual Total Returns (As of January 31, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays Net U.S. MSCI Asset Aggregate World Value Bond ND Period (NAV) Index Index -------------------------------------------------------------------------------- 10 years 3.24% 4.37% 3.95% 5 years 6.48 2.09 9.86 1 year 9.74 1.45 17.11 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2016) -------------------------------------------------------------------------------- Gross Net -------------------------------------------------------------------------------- 1.97% 1.65% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Solutions - Bloomberg Barclays MSCI World Growth Fund U.S. Aggregate Bond Index ND Index 1/07 $5,000,000 $5,000,000 $5,000,000 1/08 $4,947,810 $5,440,411 $4,976,401 1/09 $3,260,217 $5,581,213 $2,914,645 1/10 $4,409,500 $6,055,972 $3,980,851 1/11 $5,215,291 $6,362,436 $4,745,794 1/12 $5,167,339 $6,913,559 $4,603,817 1/13 $5,712,260 $7,092,310 $5,336,255 1/14 $6,407,069 $7,101,101 $6,193,899 1/15 $6,819,883 $7,570,672 $6,627,377 1/16 $6,510,168 $7,558,552 $6,290,599 1/17 $7,182,432 $7,668,374 $7,367,005 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. The performance shown for Class R shares for the period prior to the commencement of operations of Class R shares on July 1, 2015, is the net asset value performance of the Fund's Class A shares, which has not been restated to reflect any differences in expenses, including Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares generally are higher than those of Class R shares, the performance of Class R shares prior to their inception would have been higher than the performance shown. For the period beginning July 1, 2015, the actual performance of Class R shares is reflected. Class R shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects the contractual expense limitation currently in effect through December 1, 2018, for Class R shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. Please see the financial highlights for more recent expense ratios. Expense ratios in the financial highlights, unlike those shown in the prospectus, do not reflect acquired fund fees and expenses. 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. Effective November 17, 2014, Pioneer became directly responsible for portfolio management of the Fund. The performance shown for periods prior to November 17, 2014, reflects the investment strategies employed during those periods. 34 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Performance Update | 1/31/17 Class Y Shares Pioneer Solutions - Growth Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Class Y shares of Pioneer Solutions - Growth Fund during the periods shown, compared to that of the MSCI World ND Index and the Bloomberg Barclays U.S. Aggregate Bond Index. Average Annual Total Returns (As of January 31, 2017) -------------------------------------------------------------------------------- Bloomberg Barclays Net U.S. MSCI Asset Aggregate World Value Bond ND Period (NAV) Index Index -------------------------------------------------------------------------------- 10 years 3.69% 4.37% 3.95% 5 years 6.81 2.09 9.86 1 year 10.33 1.45 17.11 -------------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2016) -------------------------------------------------------------------------------- Gross -------------------------------------------------------------------------------- 1.12% -------------------------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Solutions - Bloomberg Barclays MSCI World Growth Fund U.S. Aggregate Bond Index ND Index 1/07 $10,000 $10,000 $10,000 1/08 $ 9,837 $10,881 $ 9,953 1/09 $ 6,326 $11,162 $ 5,829 1/10 $ 8,540 $12,112 $ 7,962 1/11 $10,065 $12,725 $ 9,492 1/12 $10,049 $13,827 $ 9,208 1/13 $11,077 $14,185 $10,673 1/14 $12,398 $14,202 $12,388 1/15 $13,163 $15,141 $13,255 1/16 $12,534 $15,117 $12,581 1/17 $13,755 $15,337 $14,734 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown 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. Please see the financial highlights for more recent expense ratios. Expense ratios in the financial highlights, unlike those shown in the prospectus, do not reflect acquired fund fees and expenses. 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. Effective November 17, 2014, Pioneer became directly responsible for portfolio management of the Fund. The performance shown for periods prior to November 17, 2014, reflects the investment strategies employed during those periods. Pioneer Solutions Funds | Semiannual Report | 1/31/17 35 Schedule of Investments | 1/31/17 (unaudited) Pioneer Solutions - Conservative Fund ------------------------------------------------------------------------------------------------ Shares Value ------------------------------------------------------------------------------------------------ MUTUAL FUNDS -- 94.0% UNAFFILIATED FUNDS -- 20.7% 12,926 AMG Managers Fairpointe Mid Cap Fund Class I $ 555,558 23,165 Columbia Contrarian Core Fund Class Y 539,050 269,095 Doubleline Total Return Bond Fund Class I 2,857,789 6,907 iShares Core MSCI Emerging Markets ETF 312,473 14,350 iShares MSCI Canada ETF 390,033 15,887 iShares MSCI China ETF 746,848 2,346 iShares US Aerospace & Defense ETF 334,047 21,683 JOHCM Asia Ex-Japan Equity Fund Class IS 225,718 271,289 MFS Total Return Bond Fund Class I 2,872,950 11,361 Oak Ridge Small Cap Growth Fund Class K 383,093 7,092 T. Rowe Price International Funds -- European Stock Fund 122,621 248,787 Western Asset Core Plus Bond Fund Class IS 2,848,611 ------------------------------------------------------------------------------------------------ TOTAL INVESTMENTS IN UNAFFILIATED FUNDS (Cost $12,317,742) $ 12,188,791 ------------------------------------------------------------------------------------------------ AFFILIATED FUNDS* -- 73.3% 1,696,269 Pioneer Bond Fund Class K $ 16,318,108 32,689 Pioneer Core Equity Fund Class Y 609,977 78,611 Pioneer Disciplined Value Fund Class Y 1,220,829 133,782 Pioneer Dynamic Credit Fund Class Y 1,254,875 68,371 Pioneer Floating Rate Fund Class K 464,923 22,781 Pioneer Fund Class Y 680,013 31,190 Pioneer Fundamental Growth Fund Class K 612,883 165,382 Pioneer Global Equity Fund Class K 2,317,002 23,959 Pioneer Global High Yield Fund Class Y 207,008 35,608 Pioneer Global Multisector Income Fund Class Y 372,100 36,395 Pioneer High Yield Fund Class Y 350,485 100,030 Pioneer International Equity Fund Class Y 2,039,619 37,459 Pioneer Mid Cap Value Fund Class K 933,478 65,634 Pioneer Short Term Income Fund Class K 625,492 1,411,045 Pioneer Strategic Income Fund Class K 15,084,071 ------------------------------------------------------------------------------------------------ TOTAL INVESTMENTS IN AFFILIATED FUNDS (Cost $42,743,051) $ 43,090,863 ------------------------------------------------------------------------------------------------ TOTAL MUTUAL FUNDS (Cost $55,060,793) $ 55,279,654 ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Principal Amount ($) ------------------------------------------------------------------------------------------------ U.S. GOVERNMENT AND AGENCY OBLIGATION -- 2.5% 1,495,075 U.S. Treasury Inflation Indexed Note, 0.375%, 7/15/25 $ 1,502,942 ------------------------------------------------------------------------------------------------ TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATION (Cost $1,463,944) $ 1,502,942 ------------------------------------------------------------------------------------------------ The accompanying notes are an integral part of these financial statements. 36 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ------------------------------------------------------------------------------------------------ Principal Amount ($) Value ------------------------------------------------------------------------------------------------ SOVEREIGN DEBT OBLIGATION -- 1.9% 120,465,842 JPY Japanese Government CPI Linked Bond, 0.10%, 3/10/25 $ 1,126,113 ------------------------------------------------------------------------------------------------ TOTAL SOVEREIGN DEBT OBLIGATION (Cost $1,172,735) $ 1,126,113 ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Counterparty/ Strike Expiration Description Exchange Price Date ------------------------------------------------------------------------------------------------ CURRENCY PUT OPTION PURCHASED -- 0.1% 1,400,000 EUR Put EUR Call JPY Morgan Stanley & Co. 120 5/12/17 $ 32,620 ------------------------------------------------------------------------------------------------ TOTAL CURRENCY PUT OPTION PURCHASED (Premiums paid $27,953) $ 32,620 ------------------------------------------------------------------------------------------------ TOTAL INVESTMENTS IN SECURITIES -- 98.5% (Cost $57,725,425) (a) $ 57,941,329 ------------------------------------------------------------------------------------------------ CURRENCY PUT OPTION WRITTEN -- (0.0)%+ (1,400,000) EUR Put EUR Call JPY Morgan Stanley & Co. 112 5/12/17 $ (9,578) ------------------------------------------------------------------------------------------------ TOTAL CURRENCY PUT OPTION WRITTEN (Premiums received $(6,809)) $ (9,578) ------------------------------------------------------------------------------------------------ OTHER ASSETS AND LIABILITIES -- 1.5% $ 878,707 ------------------------------------------------------------------------------------------------ TOTAL NET ASSETS -- 100.0% $ 58,810,458 ================================================================================================ * Affiliated funds managed by Pioneer Investment Management, Inc. + Amount rounds to greater than (0.1)%. (a) At January 31, 2017, the net unrealized depreciation on investments based on cost for federal tax purposes of $57,986,157 was as follows: Aggregate gross unrealized appreciation for all investments in which there is an excess of tax cost over value $ 895,697 Aggregate gross unrealized depreciation for all investments in which there is an excess of tax cost over value (940,525) ---------- Net unrealized depreciation $ (44,828) ---------- Purchases and sales of securities (excluding temporary cash investments) for the six months ended January 31, 2017 were as follows: Purchases Sales Long-Term U.S. Government $ -- $ -- Other Long-Term Securities $ 12,521,350 $15,245,034 The Fund is permitted to engage in purchase and sale transactions ("cross trades") with certain funds and accounts for which Pioneer Investment Management, Inc. (PIM) serves as the investment adviser, as set forth in Rule 17a-7 under the Investment Company Act of 1940, pursuant to procedures adopted by the Board of Trustees. Under these procedures, cross trades are effected at current market prices. During the six months ended January 31, 2017, the Trust did not engage in cross trade activity. The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 37 Schedule of Investments | 1/31/17 (unaudited) Pioneer Solutions - Conservative Fund (continued) CENTRALLY CLEARED INTEREST RATE SWAP AGREEMENTS -------------------------------------------------------------------------------------------------------- Net Annual Unrealized Notional Pay/ Floating Fixed Expiration Appreciation Principal ($) Exchange Receive Rate Rate Date (Depreciation) -------------------------------------------------------------------------------------------------------- EUR 224,029 London Receive EURIBOR 0.694% 2/10/25 $(3,874) Clearing House 6 Month SEK 2,127,723 London Pay LIBOR SEK 0.981% 2/10/25 2,549 Clearing House 3 Month -------------------------------------------------------------------------------------------------------- $(1,325) ======================================================================================================== INTEREST RATE SWAP AGREEMENT -------------------------------------------------------------------------------------------------------- Annual Notional Pay/ Floating Fixed Expiration Unrealized Principal ($) Counterparty Receive Rate Rate Date (Depreciation) -------------------------------------------------------------------------------------------------------- EUR 281,000 Deutsche Bank Pay EMMI EURO 0.332% 5/9/26 $(3,846) OverNight Index Average ======================================================================================================== NOTE: Principal amounts are denominated in U.S. Dollars unless otherwise noted: EUR Euro JPY Japanese Yen SEK Swedish Krone Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels below. Level 1 - quoted prices in active markets for identical securities. Level 2 - other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.). See Notes to Financial Statements -- Note 1A. Level 3 - significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments). See Notes to Financial Statements -- Note 1A. The following is a summary of the inputs used as of January 31, 2017, in valuing the Fund's assets: ------------------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ------------------------------------------------------------------------------------------------- Mutual Funds $ 55,279,654 $ -- $ -- $ 55,279,654 U.S. Government and Agency Obligation -- 1,502,942 -- 1,502,942 Sovereign Debt Obligation -- 1,126,113 -- 1,126,113 Currency Put Option Purchased -- 32,620 -- 32,620 ------------------------------------------------------------------------------------------------- Total $ 55,279,654 $ 2,661,675 $ -- $ 57,941,329 ------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 38 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ------------------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ------------------------------------------------------------------------------------------------- Other Financial Instruments Unrealized Appreciation on Futures Contracts $ 87,555 $ -- $ -- $ 87,555 Unrealized Depreciation on Futures Contracts (89,019) -- -- (89,019) Unrealized Appreciation on Forward Foreign Currency Contracts -- 60,695 -- 60,695 Unrealized Depreciation on Forward Foreign Currency Contracts -- (81,834) -- (81,834) Unrealized Appreciation on Centrally Cleared Interest Rate Swap Agreements -- 2,549 -- 2,549 Unrealized Depreciation on Centrally Cleared Interest Rate Swap Agreements -- (3,874) -- (3,874) Unrealized Depreciation on Interest Rate Swap Agreement -- (3,846) -- (3,846) Currency Put Option Written -- (9,578) -- (9,578) ------------------------------------------------------------------------------------------------- Total Other Financial Instruments $ (1,464) $ (35,888) $ -- $ (37,352) ================================================================================================= During the six months ended January 31, 2017, there were no transfers between Levels 1, 2, and 3. The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 39 Schedule of Investments | 1/31/17 (unaudited) Pioneer Solutions - Balanced Fund ---------------------------------------------------------------------------------------------------- Shares Value ---------------------------------------------------------------------------------------------------- MUTUAL FUNDS -- 93.9% UNAFFILIATED FUNDS -- 25.9% 102,480 AMG Managers Fairpointe Mid Cap Fund Class I $ 4,404,584 187,029 Columbia Contrarian Core Fund Class Y 4,352,165 798,304 Doubleline Total Return Bond Fund Class I 8,477,988 19,641 iShares Core MSCI Emerging Markets ETF 888,559 102,604 iShares MSCI Canada ETF 2,788,777 46,113 iShares MSCI China ETF 2,167,772 6,254 iShares US Aerospace & Defense ETF 890,507 46,855 JOHCM Asia Ex-Japan Equity Fund Class IS 487,762 625,958 MFS Total Return Bond Fund Class I 6,628,895 97,072 Oak Ridge Small Cap Growth Fund Class K 3,273,268 186,713 T. Rowe Price International Funds -- European Stock Fund 3,228,268 577,807 Western Asset Core Plus Bond Fund Class IS 6,615,890 ---------------------------------------------------------------------------------------------------- TOTAL INVESTMENTS IN UNAFFILIATED FUNDS (Cost $46,173,551) $ 44,204,435 ---------------------------------------------------------------------------------------------------- AFFILIATED FUNDS* -- 68.0% 1,917,203 Pioneer Bond Fund Class K $ 18,443,493 272,454 Pioneer Core Equity Fund Class Y 5,083,991 645,082 Pioneer Disciplined Value Fund Class Y 10,018,123 550,178 Pioneer Dynamic Credit Fund Class Y 5,160,673 189,412 Pioneer Fund Class Y 5,653,946 251,114 Pioneer Fundamental Growth Fund Class K 4,934,390 1,126,396 Pioneer Global Equity Fund Class K 15,780,808 356,705 Pioneer Global High Yield Fund Class Y 3,081,931 246,639 Pioneer Global Multisector Income Fund Class Y 2,577,377 1 Pioneer High Yield Fund Class Y 6 1,188,148 Pioneer International Equity Fund Class Y 24,226,345 299,074 Pioneer Mid Cap Value Fund Class K 7,452,924 1,255,956 Pioneer Strategic Income Fund Class K 13,426,170 ---------------------------------------------------------------------------------------------------- TOTAL INVESTMENTS IN AFFILIATED FUNDS (Cost $108,985,466) $ 115,840,177 ---------------------------------------------------------------------------------------------------- TOTAL MUTUAL FUNDS (Cost $155,159,017) $ 160,044,612 ---------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------- Principal Amount ($) ---------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATION -- 2.5% 4,330,526 U.S. Treasury Inflation Indexed Note, 0.375%, 7/15/25 $ 4,353,313 ---------------------------------------------------------------------------------------------------- TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATION (Cost $4,240,356) $ 4,353,313 ---------------------------------------------------------------------------------------------------- SOVEREIGN DEBT OBLIGATION -- 2.0% 359,401,406 JPY Japanese Government CPI Linked Bond, 0.10%, 3/10/25 $ 3,359,681 ---------------------------------------------------------------------------------------------------- TOTAL SOVEREIGN DEBT OBLIGATION (Cost $3,498,773) $ 3,359,681 ---------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 40 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ----------------------------------------------------------------------------------------------------- Counterparty/ Strike Expiration Description Exchange Price Date Value ----------------------------------------------------------------------------------------------------- CURRENCY PUT OPTION PURCHASED -- 0.1% 8,000,000 EUR Put EUR Call JPY Morgan Stanley & Co. 120 5/12/17 $ 186,402 ----------------------------------------------------------------------------------------------------- TOTAL CURRENCY PUT OPTION PURCHASED (Premiums paid $159,730) $ 186,402 ----------------------------------------------------------------------------------------------------- TOTAL INVESTMENTS IN SECURITIES -- 98.5% (Cost $163,057,876) (a) $ 167,944,008 ----------------------------------------------------------------------------------------------------- CURRENCY PUT OPTION WRITTEN -- (0.0)%+ (8,000,000) EUR Put EUR Call JPY Morgan Stanley & Co. 112 5/12/17 $ (54,731) ---------------------------------------------------------------------------------------------------- TOTAL CURRENCY PUT OPTION WRITTEN (Premiums received $(38,911)) $ (54,731) ----------------------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- 1.5% $ 2,620,949 ----------------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $ 170,510,226 ===================================================================================================== * Affiliated funds managed by Pioneer Investment Management, Inc. + Amount rounds to greater than (0.1)%. (a) At January 31, 2017, the net unrealized appreciation on investments based on cost for federal tax purposes of $164,246,965 was as follows: Aggregate gross unrealized appreciation for all investments in which there is an excess of tax cost over value $ 8,398,271 Aggregate gross unrealized depreciation for all investments in which there is an excess of tax cost over value (4,701,228) ----------- Net unrealized appreciation $ 3,697,043 =========== Purchases and sales of securities (excluding temporary cash investments) for the six months ended January 31, 2017 were as follows: ------------------------------------------------------------------------------------------- Purchases Sales ------------------------------------------------------------------------------------------- Long-Term U.S. Government $ -- $ -- Other Long-Term Securities $ 27,121,218 $ 39,469,822 The Fund is permitted to engage in purchase and sale transactions ("cross trades") with certain funds and accounts for which Pioneer Investment Management, Inc. (PIM) serves as the investment adviser, as set forth in Rule 17a-7 under the Investment Company Act of 1940, pursuant to procedures adopted by the Board of Trustees. Under these procedures, cross trades are effected at current market prices. During the six months ended January 31, 2017, the Trust did not engage in cross trade activity. The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 41 Schedule of Investments | 1/31/17 (unaudited) Pioneer Solutions - Balanced Fund (continued) CENTRALLY CLEARED INTEREST RATE SWAP AGREEMENTS ----------------------------------------------------------------------------------------------------------- Net Annual Unrealized Notional Pay/ Floating Fixed Expiration Appreciation Principal ($) Exchange Receive Rate Rate Date (Depreciation) ----------------------------------------------------------------------------------------------------------- EUR 677,667 London Receive EURIBOR 0.694% 2/10/25 $ (11,718) Clearing House 6 Month SEK 6,482,000 London Pay LIBOR SEK 0.981% 2/10/25 6,953 Clearing House 3 Month ----------------------------------------------------------------------------------------------------------- $ (4,765) =========================================================================================================== INTEREST RATE SWAP AGREEMENT ----------------------------------------------------------------------------------------------------------- Annual Notional Pay/ Floating Fixed Expiration Unrealized Principal ($) Counterparty Receive Rate Rate Date (Depreciation) ----------------------------------------------------------------------------------------------------------- EUR 844,000 Deutsche Bank Pay EMMI EURO 0.332% 5/9/26 $ (11,553) OverNight Index Average =========================================================================================================== NOTE: Principal amounts are denominated in U.S. Dollars unless otherwise noted: EUR Euro JPY Japanese Yen SEK Swedish Krone Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels below. Level 1 - quoted prices in active markets for identical securities. Level 2 - other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.). See Notes to Financial Statements -- Note 1A. Level 3 - significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments). See Notes to Financial Statements -- Note 1A. The accompanying notes are an integral part of these financial statements. 42 Pioneer Solutions Funds | Semiannual Report | 1/31/17 The following is a summary of the inputs used as of January 31, 2017, in valuing the Fund's assets: -------------------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total -------------------------------------------------------------------------------------------------- Mutual Funds $160,044,612 $ -- $ -- $160,044,612 U.S. Government and Agency Obligation -- 4,353,313 -- 4,353,313 Sovereign Debt Obligation -- 3,359,681 -- 3,359,681 Currency Put Option Purchased -- 186,402 -- 186,402 -------------------------------------------------------------------------------------------------- Total $160,044,612 $ 7,899,396 $ -- $167,944,008 -------------------------------------------------------------------------------------------------- Other Financial Instruments Unrealized Appreciation on Futures Contracts $ 244,321 $ -- $ -- $ 244,321 Unrealized Depreciation on Futures Contracts (329,145) -- -- (329,145) Unrealized Appreciation on Forward Foreign Currency Contracts -- 171,445 -- 171,445 Unrealized Depreciation on Forward Foreign Currency Contracts -- (261,792) -- (261,792) Unrealized Appreciation on Centrally Cleared Interest Rate Swap Agreements -- 6,953 -- 6,953 Unrealized Depreciation on Centrally Cleared Interest Rate Swap Agreements -- (11,718) -- (11,718) Unrealized Depreciation on Interest Rate Swap Agreement -- (11,553) -- (11,553) Currency Put Option Written -- (54,731) -- (54,731) -------------------------------------------------------------------------------------------------- Total Other Financial Instruments $ (84,824) $ (161,396) $ -- $ (246,220) ================================================================================================== During the six months ended January 31, 2017, there were no transfers between Levels 1, 2, and 3. The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 43 Schedule of Investments | 1/31/17 (unaudited) Pioneer Solutions - Growth Fund -------------------------------------------------------------------------------------------------------- Shares Value -------------------------------------------------------------------------------------------------------- MUTUAL FUNDS -- 90.5% UNAFFILIATED FUNDS -- 23.9% 271,844 AMG Managers Fairpointe Mid Cap Fund Class I $ 11,683,868 503,451 Columbia Contrarian Core Fund Class Y 11,715,305 323,717 Doubleline Total Return Bond Fund Class I 3,437,875 33,331 iShares Core MSCI Emerging Markets ETF 1,507,894 295,280 iShares MSCI Canada ETF 8,025,710 78,237 iShares MSCI China ETF 3,677,921 10,927 iShares US Aerospace & Defense ETF 1,555,896 386,257 JOHCM Asia Ex-Japan Equity Fund Class IS 4,020,938 441,868 JPMorgan Intrepid European Fund Class L 10,441,341 248,811 Oak Ridge Small Cap Growth Fund Class K 8,389,907 508,467 T. Rowe Price International Funds -- European Stock Fund 8,791,394 -------------------------------------------------------------------------------------------------------- TOTAL INVESTMENTS IN UNAFFILIATED FUNDS (Cost $77,098,721) $ 73,248,049 -------------------------------------------------------------------------------------------------------- AFFILIATED FUNDS* -- 66.6% 2,250,273 Pioneer Bond Fund Class K $ 21,647,626 709,759 Pioneer Core Equity Fund Class Y 13,244,098 1,708,557 Pioneer Disciplined Value Fund Class Y 26,533,890 495,573 Pioneer Fund Class Y 14,792,842 677,359 Pioneer Fundamental Growth Fund Class K 13,310,105 2,510,481 Pioneer Global Equity Fund Class K 35,171,839 308,606 Pioneer Global Multisector Income Fund Class Y 3,224,933 2,336,636 Pioneer International Equity Fund Class Y 47,644,016 779,974 Pioneer Mid Cap Value Fund Class K 19,436,952 870,025 Pioneer Strategic Income Fund Class K 9,300,567 -------------------------------------------------------------------------------------------------------- TOTAL INVESTMENTS IN AFFILIATED FUNDS (Cost $188,845,210) $ 204,306,868 -------------------------------------------------------------------------------------------------------- TOTAL MUTUAL FUNDS (Cost $265,943,931) $ 277,554,917 -------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------- Principal Amount ($) -------------------------------------------------------------------------------------------------------- U.S. GOVERNMENT AND AGENCY OBLIGATION -- 2.4% 7,355,279 U.S. Treasury Inflation Indexed Note, 0.375%, 7/15/25 $ 7,393,983 -------------------------------------------------------------------------------------------------------- TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATION (Cost $7,202,127) $ 7,393,983 -------------------------------------------------------------------------------------------------------- SOVEREIGN DEBT OBLIGATION -- 1.9% 612,808,840 JPY Japanese Government CPI Linked Bond, 0.10%, 3/10/25 $ 5,728,531 -------------------------------------------------------------------------------------------------------- TOTAL SOVEREIGN DEBT OBLIGATION (Cost $5,965,694) $ 5,728,531 ======================================================================================================== The accompanying notes are an integral part of these financial statements. 44 Pioneer Solutions Funds | Semiannual Report | 1/31/17 --------------------------------------------------------------------------------------------------------- Principal Counterparty/ Strike Expiration Amount ($) Description Exchange Price Date Value --------------------------------------------------------------------------------------------------------- CURRENCY PUT OPTION PURCHASED -- 0.2% 28,500,000 EUR Put EUR Call JPY Morgan Stanley & Co. 120 5/12/17 $ 664,056 --------------------------------------------------------------------------------------------------------- TOTAL CURRENCY PUT OPTION PURCHASED (Premiums paid $569,039) $ 664,056 --------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------------- Contracts --------------------------------------------------------------------------------------------------------- EXCHANGE-TRADED PUT OPTIONS PURCHASED -- 0.5% 169 Russell 2000 Index Chicago Board of Options 1,300 12/15/17 $ 1,383,434 47 S&P 500 Index Chicago Board of Options 1,950 3/17/17 10,340 --------------------------------------------------------------------------------------------------------- TOTAL EXCHANGE-TRADED PUT OPTIONS PURCHASED (Premiums paid $1,901,409) $ 1,393,774 --------------------------------------------------------------------------------------------------------- EXCHANGE-TRADED CALL OPTION PURCHASED -- 0.1% 69 S&P 500 Index Chicago Board of Options 2,250 3/17/17 $ 333,270 --------------------------------------------------------------------------------------------------------- TOTAL EXCHANGE-TRADED CALL OPTION PURCHASED (Premiums paid $254,816) $ 333,270 --------------------------------------------------------------------------------------------------------- TOTAL INVESTMENTS IN SECURITIES -- 95.6% (Cost $281,837,016) (a) $ 293,068,531 --------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------------- Principal Amount ($) --------------------------------------------------------------------------------------------------------- CURRENCY PUT OPTION WRITTEN -- (0.1)% (28,500,000) EUR Put EUR Call JPY Morgan Stanley & Co. 112 5/12/17 $ (194,978) --------------------------------------------------------------------------------------------------------- TOTAL CURRENCY PUT OPTION WRITTEN (Premiums paid $(138,622)) $ (194,978) --------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------------- Contracts --------------------------------------------------------------------------------------------------------- EXCHANGE-TRADED PUT OPTION WRITTEN -- (0.2)% (169) Russell 2000 Index Chicago Board of Options 1,100 12/15/17 $ (522,210) --------------------------------------------------------------------------------------------------------- TOTAL EXCHANGE-TRADED PUT OPTION WRITTEN (Premiums received $(574,156)) $ (522,210) --------------------------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- 4.7% $ 14,294,008 --------------------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $ 306,645,351 ========================================================================================================= * Affiliated funds managed by Pioneer Investment Management, Inc. (a) At January 31, 2017, the net unrealized appreciation on investments based on cost for federal tax purposes of $282,857,560 was as follows: Aggregate gross unrealized appreciation for all investments in which there is an excess of tax cost over value $ 20,487,286 Aggregate gross unrealized depreciation for all investments in which there is an excess of tax cost over value (10,276,315) ------------ Net unrealized appreciation $ 10,210,971 ============ The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 45 Schedule of Investments | 1/31/17 (unaudited) Pioneer Solutions - Growth Fund (continued) Purchases and sales of securities (excluding temporary cash investments) for the six months ended January 31, 2017 were as follows: -------------------------------------------------------------------------------- Purchases Sales -------------------------------------------------------------------------------- Long-Term U.S. Government $ -- $ -- Other Long-Term Securities $ 52,639,303 $ 72,715,266 The Fund is permitted to engage in purchase and sale transactions ("cross trades") with certain funds and accounts for which Pioneer Investment Management, Inc. (PIM) serves as the investment adviser, as set forth in Rule 17a-7 under the Investment Company Act of 1940, pursuant to procedures adopted by the Board of Trustees. Under these procedures, cross trades are effected at current market prices. During the six months ended January 31, 2017, the Trust did not engage in cross trade activity. CENTRALLY CLEARED INTEREST RATE SWAP AGREEMENTS --------------------------------------------------------------------------------------------------------- Net Annual Unrealized Notional Pay/ Floating Fixed Expiration Appreciation Principal ($) Exchange Receive Rate Rate Date (Depreciation) --------------------------------------------------------------------------------------------------------- EUR 1,116,002 London Receive EURIBOR 0.694% 2/10/25 $ (19,298) Clearing House 6 Month SEK 10,599,294 London Pay LIBOR SEK 0.981% 2/10/25 12,699 Clearing House 3 Month --------------------------------------------------------------------------------------------------------- $ (6,599) ========================================================================================================= INTEREST RATE SWAP AGREEMENT -------------------------------------------------------------------------------------------------------- Annual Notional Pay/ Floating Fixed Expiration Unrealized Principal ($) Counterparty Receive Rate Rate Date (Depreciation) --------------------------------------------------------------------------------------------------------- EUR 1,548,000 Deutsche Bank Pay EMMI EURO 0.332% 5/09/26 $(21,189) OverNight Index Average ========================================================================================================= NOTE: Principal amounts are denominated in U.S. Dollars unless otherwise noted: EUR Euro JPY Japanese Yen SEK Swedish Krone Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels below. Level 1 - quoted prices in active markets for identical securities. Level 2 - other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.). See Notes to Financial Statements -- Note 1A. Level 3 - significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments). See Notes to Financial Statements -- Note 1A. The accompanying notes are an integral part of these financial statements. 46 Pioneer Solutions Funds | Semiannual Report | 1/31/17 The following is a summary of the inputs used as of January 31, 2017, in valuing the Fund's assets: -------------------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total -------------------------------------------------------------------------------------------------- Mutual Funds $ 277,554,917 $ -- $ -- $277,554,917 U.S. Government and Agency Obligation -- 7,393,983 -- 7,393,983 Sovereign Debt Obligation -- 5,728,531 -- 5,728,531 Currency Put Option Purchased -- 664,056 -- 664,056 Exchange-Traded Put Options Purchased 1,393,774 -- -- 1,393,774 Exchange-Traded Call Option Purchased 333,270 -- -- 333,270 -------------------------------------------------------------------------------------------------- Total $ 279,281,961 $13,786,570 $ -- $293,068,531 -------------------------------------------------------------------------------------------------- Other Financial Instruments Unrealized Appreciation on Futures Contracts $ 593,834 $ -- $ -- $ 593,834 Unrealized Depreciation on Futures Contracts (448,223) -- -- (448,223) Unrealized Appreciation on Forward Foreign Currency Contracts -- 306,923 -- 306,923 Unrealized Depreciation on Forward Foreign Currency Contracts -- (420,748) -- (420,748) Unrealized Appreciation on Centrally Cleared Interest Rate Swap Agreements -- 12,699 -- 12,699 Unrealized Depreciation on Centrally Cleared Interest Rate Swap Agreements -- (19,298) -- (19,298) Unrealized Depreciation on Interest Rate Swap Agreement -- (21,189) -- (21,189) Currency Put Option Written -- (194,978) -- (194,978) Exchange-Traded Put Option Written (522,210) -- -- (522,210) -------------------------------------------------------------------------------------------------- Total Other Financial Instruments $ (376,599) $ (336,591) $ -- $ (713,190) ================================================================================================== During the six months ended January 31, 2017, there were no transfers between Levels 1, 2, and 3. The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 47 Statements of Assets and Liabilities | 1/31/17 (unaudited) ------------------------------------------------------------------------------------------------------- Pioneer Pioneer Pioneer Solutions - Solutions - Solutions - Conservative Balanced Growth Fund Fund Fund ------------------------------------------------------------------------------------------------------- ASSETS: Investments in securities of affiliated funds, at value (at cost $42,743,051, $108,985,466 and $188,845,210, respectively) $43,090,863 $ 115,840,177 $ 204,306,868 Investments in securities of unaffiliated funds, at value (at cost $14,982,374, $54,072,410 and $92,991,806, respectively) 14,850,466 52,103,831 88,761,663 Cash 302,279 659,574 13,131,623 Foreign currencies, at value (at cost $6,521, $178,674 and $934,393, respectively) 7,898 170,207 948,725 Restricted cash* 411,335 1,897,975 1,639,215 Unrealized appreciation on forward foreign currency contracts 60,695 171,445 306,923 Receivables for: Investment funds sold 53,386 170,366 -- Capital stock sold 85,132 401,778 83,139 Distributions to shareowners -- 1,758 -- Dividends 113,269 167,421 104,516 Interest 685 2,020 3,439 Due from Pioneer Investment Management, Inc. 40,556 42 67 Variation margin for centrally cleared interest rate swap agreements 9,347 26,220 33,274 Other assets 21,360 21,628 17,731 ------------------------------------------------------------------------------------------------------- Total assets $59,047,271 $ 171,634,442 $ 309,337,183 ======================================================================================================= LIABILITIES: Written options (premiums received $(6,809), $(38,911) and $(712,778), respectively) 9,578 54,731 717,188 Unrealized depreciation on interest rate swaps 3,846 11,553 21,189 Unrealized depreciation on forward foreign currency contracts 81,834 261,792 420,748 Payables for: Investment Funds purchased 28,079 330,657 571,606 Capital stock redeemed 8,158 276,128 485,448 Distributions to shareowners 2,262 -- 2,583 Variation margin for futures contracts 16,844 19,930 197,249 Due to affiliates 31,835 96,937 150,607 Accrued expenses and other liabilities 54,377 72,488 125,214 ------------------------------------------------------------------------------------------------------- Total liabilities $ 236,813 $ 1,124,216 $ 2,691,832 ======================================================================================================= * Represents restricted cash deposited at the custodian and/or counterparty for derivative contracts. The accompanying notes are an integral part of these financial statements. 48 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ------------------------------------------------------------------------------------------------------- Pioneer Pioneer Pioneer Solutions - Solutions - Solutions - Conservative Balanced Growth Fund Fund Fund ------------------------------------------------------------------------------------------------------- NET ASSETS: Paid-in capital $60,533,180 $170,089,717 $ 289,956,024 Undistributed (distributions in excess of) net investment income 25,110 (152,807) (770,953) Accumulated net realized gain (loss) on investments, futures contracts, swap contracts, written options and foreign currency transactions (1,935,286) (4,096,237) 6,214,977 Net unrealized appreciation on investments 215,904 4,886,132 11,231,515 Net unrealized appreciation (depreciation) on futures contracts (1,464) (84,824) 145,611 Net unrealized depreciation on swap contracts (5,171) (16,318) (27,788) Net unrealized depreciation on written options (2,769) (15,820) (4,410) Net unrealized depreciation on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (19,046) (99,617) (99,625) ------------------------------------------------------------------------------------------------------- Total net assets $58,810,458 $170,510,226 $ 306,645,351 ======================================================================================================= NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Net Assets of Class A Shares $43,363,663 $115,981,899 $ 234,937,710 Net Assets of Class C Shares $15,330,188 $ 53,745,290 $ 70,714,837 Net Assets of Class R Shares $ 8,631 $ 19,481 $ 26,137 Net Assets of Class Y Shares $ 107,976 $ 763,556 $ 966,667 Class A Shares Outstanding 4,271,246 10,333,806 18,814,551 Class C Shares Outstanding 1,556,941 5,195,193 6,000,736 Class R Shares Outstanding 852 1,743 2,105 Class Y Shares Outstanding 11,290 67,180 75,867 Net Asset Value - Class A Shares $ 10.15 $ 11.22 $ 12.49 Net Asset Value - Class C Shares $ 9.85 $ 10.35 $ 11.78 Net Asset Value - Class R Shares $ 10.13 $ 11.18 $ 12.42 Net Asset Value - Class Y Shares $ 9.56 $ 11.37 $ 12.74 MAXIMUM OFFERING PRICE: Class A (100 (divided by) 94.25 x net asset value per share) $ 10.77 $ 11.90 $ 13.25 ======================================================================================================= The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 49 Statements of Operations (unaudited) For the Six Months Ended 1/31/17 ------------------------------------------------------------------------------------------------------- Pioneer Pioneer Pioneer Solutions - Solutions - Solutions - Conservative Balanced Growth Fund Fund Fund ------------------------------------------------------------------------------------------------------- INVESTMENT INCOME: Dividend income from underlying affiliated funds $ 772,752 $ 1,865,682 $ 2,689,408 Dividend income from underlying unaffiliated funds 184,757 637,770 933,141 Interest 9,743 24,279 45,342 ------------------------------------------------------------------------------------------------------- Total Investment Income $ 967,252 $ 2,527,731 $ 3,667,891 ------------------------------------------------------------------------------------------------------- EXPENSES: Management fees $ 40,945 $ 116,775 $ 201,597 Transfer agent fees Class A 17,661 52,946 131,930 Class C 6,544 16,097 30,068 Class R 26 58 98 Class Y 146 552 802 Distribution fees Class A 57,647 151,550 295,607 Class C 83,873 287,265 363,146 Class R 22 43 55 Shareholder communications expense 6,621 22,975 52,372 Administrative expense 20,345 47,506 83,783 Custodian fees 21,033 25,811 17,365 Registration fees 31,538 35,141 19,223 Professional fees 19,726 21,018 28,894 Printing fees 6,696 8,853 8,891 Pricing fees 748 931 791 Fees and expenses of non-affiliated trustees 3,553 3,663 5,098 Insurance expense 362 1,192 2,011 Miscellaneous 4,116 4,856 7,041 ------------------------------------------------------------------------------------------------------- Total expenses $ 321,602 $ 797,232 $ 1,248,772 Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. $ (38,240) $ (59) $ (91) ------------------------------------------------------------------------------------------------------- Net expenses $ 283,362 $ 797,173 $ 1,248,681 ------------------------------------------------------------------------------------------------------- Net investment income $ 683,890 $ 1,730,558 $ 2,419,210 ======================================================================================================= The accompanying notes are an integral part of these financial statements. 50 Pioneer Solutions Funds | Semiannual Report | 1/31/17 For the Six Months Ended 1/31/17 ------------------------------------------------------------------------------------------------------- Pioneer Pioneer Pioneer Solutions - Solutions - Solutions - Conservative Balanced Growth Fund Fund Fund ------------------------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS, FUTURES CONTRACTS, SWAP CONTRACTS, WRITTEN OPTIONS AND FOREIGN CURRENCY TRANSACTIONS: Net realized gain (loss) on: Underlying affiliated funds $ (159,814) $ 1,631,526 $ 6,026,671 Underlying unaffiliated funds (137,135) (923,975) (2,371,185) Capital gain on distributions from underlying affiliated funds 312,234 1,165,286 4,162,676 Capital gain on distributions from underlying unaffiliated funds 35,056 433,965 975,954 Futures contracts (593,708) (2,234,233) (784,862) Swap contracts (128,341) (394,595) (655,496) Written options (45,078) (113,230) (149,351) Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 162,458 812,771 464,367 ------------------------------------------------------------------------------------------------------- $ (554,328) $ 377,515 $ 7,668,774 ------------------------------------------------------------------------------------------------------- Change in net unrealized appreciation (depreciation) on: Underlying affiliated funds $ (286,019) $ (1,132,681) $ (5,646,599) Underlying unaffiliated funds (357,756) (237,866) 1,694,740 Futures contracts 165,597 443,975 1,632,030 Swap contracts 116,033 358,832 588,848 Written options (20,313) (80,147) (122,047) Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 7,378 38,389 110,276 ------------------------------------------------------------------------------------------------------- $ (375,080) $ (609,498) $ (1,742,752) ------------------------------------------------------------------------------------------------------- Net realized and unrealized gain (loss) on investments, futures contracts, swap contracts, written options and forward foreign currency contracts and other assets and liabilities denominated in foreign currencies $ (929,408) $ (231,983) $ 5,926,022 ------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from operations $ (245,518) $ 1,498,575 $ 8,345,232 ======================================================================================================= The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 51 Statements of Changes in Net Assets ------------------------------------------------------------------------------------------------------- Pioneer Solutions - Pioneer Solutions - Conservative Fund Balanced Fund --------------------------------------------------------------- Six Months Six Months Ended Year Ended Year 1/31/17 Ended 1/31/17 Ended (unaudited) 7/31/16 (unaudited) 7/31/16 ------------------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income (loss) $ 683,890 $ 1,452,905 $ 1,730,558 $ 3,022,656 Net realized gain (loss) on investments, futures contracts, swap contracts, written options and forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (554,328) (934,959) 377,515 (2,330,784) Change in net unrealized appreciation (depreciation) on investments, futures contracts, swap contracts, written options and forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (375,080) (250,550) (609,498) (6,511,117) ------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from operations $ (245,518) $ 267,396 $ 1,498,575 $ (5,819,245) ------------------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.24, $0.29, $0.24 and $0.27, respectively) $(1,025,860) $(1,205,906) $(2,480,991) $ (2,947,850) Class C ($0.15, $0.20, $0.16 and $0.19, respectively) (243,573) (335,987) (853,099) (1,111,615) Class R ($0.21, $0.30, $0.23 and $0.30, respectively) (182) (253) (382) (257) Class Y ($0.24, $0.27, $0.27 and $0.30, respectively) (2,842) (2,891) (20,656) (34,638) Net realized gain: Class A ($0.00, $1.13, $0.00 and $0.86, respectively) -- (4,678,518) -- (9,290,030) Class C ($0.00, $1.13, $0.00 and $0.86, respectively) -- (1,937,019) -- (5,108,460) Class R ($0.00, $1.13, $0.00 and $0.86, respectively) -- (964) -- (748) Class Y ($0.00, $1.13, $0.00 and $0.86, respectively) -- (11,928) -- (99,468) ------------------------------------------------------------------------------------------------------- Total distributions to shareowners $(1,272,457) $(8,173,466) $(3,355,128) $ (18,593,066) ------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 52 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ------------------------------------------------------------------------------------------------------- Pioneer Solutions - Pioneer Solutions - Conservative Fund Balanced Fund --------------------------------------------------------------- Six Months Six Months Ended Year Ended Year 1/31/17 Ended 1/31/17 Ended (unaudited) 7/31/16 (unaudited) 7/31/16 ------------------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sales or exchange of shares $ 6,168,103 $ 11,217,618 $ 10,902,997 $ 25,621,474 Reinvestment of distributions 1,195,200 7,555,353 3,207,398 17,128,419 Cost of shares repurchased (11,220,735) (16,852,509) (27,916,476) (48,922,888) ------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from Fund share transactions (3,857,432) 1,920,462 (13,806,081) (6,172,995) ------------------------------------------------------------------------------------------------------- Net decrease in net assets $(5,375,407) $ (5,985,608) $(15,662,634) $(30,585,306) NET ASSETS: Beginning of period 64,185,865 70,171,473 186,172,860 216,758,166 ------------------------------------------------------------------------------------------------------- End of period $58,810,458 $ 64,185,865 $170,510,226 $186,172,860 ------------------------------------------------------------------------------------------------------- Undistributed (distributions in excess of) net investment income, end of period $ 25,110 $ 613,677 $ (152,807) $ 1,471,763 ======================================================================================================= The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 53 Statements of Changes in Net Assets (continued) ------------------------------------------------------------------------------------------------------- Pioneer Solutions - Growth Fund ----------------------------- Six Months Ended Year 1/31/17 Ended (unaudited) 7/31/16 ------------------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income (loss) $ 2,419,210 $ 3,091,367 Net realized gain (loss) on investments, futures contracts, swap contracts, written options and forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 7,668,774 1,560,401 Change in net unrealized appreciation (depreciation) on investments, futures contracts, swap contracts, written options and forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (1,742,752) (18,517,160) ------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from operations $ 8,345,232 $(13,865,392) ------------------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.16 and $0.18, respectively) $ (2,945,875) $ (3,448,475) Class C ($0.07 and $0.09, respectively) (430,655) (630,056) Class R ($0.15 and $0.21, respectively) (303) (150) Class Y ($0.20 and $0.21, respectively) (13,530) (21,523) Net realized gain: Class A ($0.07 and $0.84, respectively) (1,223,872) (16,258,476) Class C ($0.07 and $0.84, respectively) (395,672) (5,798,035) Class R ($0.07 and $0.84, respectively) (131) (610) Class Y ($0.07 and $0.84, respectively) (4,528) (88,090) ------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (5,014,566) $(26,245,415) ------------------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sales or exchange of shares $ 14,247,253 $ 35,429,202 Reinvestment of distributions 4,856,065 24,660,959 Cost of shares repurchased (35,696,992) (68,049,605) ------------------------------------------------------------------------------------------------------- Net decrease in net assets resulting from Fund share transactions (16,593,674) (7,959,444) ------------------------------------------------------------------------------------------------------- Net decrease in net assets $ (13,263,008) $(48,070,251) NET ASSETS: Beginning of period 319,908,359 367,978,610 ------------------------------------------------------------------------------------------------------- End of period $ 306,645,351 $319,908,359 ------------------------------------------------------------------------------------------------------- Undistributed (distributions in excess of) net investment income, end of period $ (770,953) $ 200,200 ======================================================================================================= The accompanying notes are an integral part of these financial statements. 54 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ----------------------------------------------------------------------------------------------------- Pioneer Solutions - Conservative Fund ------------------------------------------------------------------- Six Months Six Months Ended Ended 1/31/17 1/31/17 Year Ended Year Ended Shares Amount 7/31/16 7/31/16 (unaudited) (unaudited) Shares Amount ----------------------------------------------------------------------------------------------------- Class A Shares sold 476,275 $ 4,911,092 604,781 $ 6,405,174 Reinvestment of distributions 96,948 975,296 563,069 5,658,844 Less shares repurchased (766,607) (7,863,626) (837,372) (8,731,562) ----------------------------------------------------------------------------------------------------- Net increase (decrease) (193,384) $(1,977,238) 330,478 $ 3,332,456 ----------------------------------------------------------------------------------------------------- Class C Shares sold 122,490 $ 1,213,749 455,131 $ 4,728,950 Reinvestment of distributions 22,350 218,134 193,437 1,886,018 Less shares repurchased (335,672) (3,331,057) (763,235) (7,953,081) ----------------------------------------------------------------------------------------------------- Net decrease (190,832) $(1,899,174) (114,667) $(1,338,113) ===================================================================================================== Class Y Shares sold 4,491 $ 43,262 7,768 $ 83,494 Reinvestment of distributions 187 1,770 1,105 10,491 Less shares repurchased (2,698) (26,052) (15,770) (167,866) ----------------------------------------------------------------------------------------------------- Net increase (decrease) 1,980 $ 18,980 (6,897) $ (73,881) ===================================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 55 Statements of Changes in Net Assets (continued) ----------------------------------------------------------------------------------------------------- Pioneer Solutions - Balanced Fund -------------------------------------------------------------------- Six Months Six Months Ended Ended 1/31/17 1/31/17 Year Ended Year Ended Shares Amount 7/31/16 7/31/16 (unaudited) (unaudited) Shares Amount ----------------------------------------------------------------------------------------------------- Class A Shares sold 502,106 $ 5,645,050 1,047,166 $ 11,977,456 Reinvestment of distributions 221,950 2,448,106 1,084,238 12,067,537 Less shares repurchased (1,456,942) (16,402,751) (2,084,317) (23,686,989) ----------------------------------------------------------------------------------------------------- Net increase (decrease) (732,886) $ (8,309,595) 47,087 $ 358,004 ===================================================================================================== Class C Shares sold 484,977 $ 5,003,978 1,189,840 $ 12,457,865 Reinvestment of distributions 72,786 740,963 481,229 4,947,038 Less shares repurchased (1,056,703) (10,915,444) (2,287,374) (24,045,545) ----------------------------------------------------------------------------------------------------- Net decrease (498,940) $ (5,170,503) (616,305) $ (6,640,642) ===================================================================================================== Class R Shares sold 443 $ 4,965 748 $ 8,215 Reinvestment of distributions 18 201 9 95 Less shares repurchased -- -- (260) (2,797) ----------------------------------------------------------------------------------------------------- Net increase 461 $ 5,166 497 $ 5,513 ===================================================================================================== Class Y Shares sold 21,785 $ 249,004 100,886 $ 1,177,938 Reinvestment of distributions 1,623 18,128 10,102 113,749 Less shares repurchased (52,358) (598,281) (104,875) (1,187,557) ----------------------------------------------------------------------------------------------------- Net increase (decrease) (28,950) $ (331,149) 6,113 $ 104,130 ===================================================================================================== The accompanying notes are an integral part of these financial statements. 56 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ------------------------------------------------------------------------------------------------------- Pioneer Solutions - Growth Fund ------------------------------------------------------------------- Six Months Six Months Ended Ended 1/31/17 1/31/17 Year Ended Year Ended Shares Amount 7/31/16 7/31/16 (unaudited) (unaudited) Shares Amount ------------------------------------------------------------------------------------------------------- Class A Shares sold 688,614 $ 8,488,405 1,519,091 $ 18,784,192 Reinvestment of distributions 339,137 4,140,870 1,606,934 19,604,535 Less shares repurchased (1,845,787) (22,762,058) (3,271,985) (40,168,227) ------------------------------------------------------------------------------------------------------- Net decrease (818,036) $(10,132,783) (145,960) $ (1,779,500) ------------------------------------------------------------------------------------------------------- Class C Shares sold 467,531 $ 5,428,142 1,378,968 $ 16,056,831 Reinvestment of distributions 60,880 701,942 431,217 4,971,978 Less shares repurchased (1,066,010) (12,375,211) (2,353,490) (27,028,433) ------------------------------------------------------------------------------------------------------- Net decrease (537,599) $ (6,245,127) (543,305) $ (5,999,624) ======================================================================================================= Class R Shares sold 574 $ 7,040 784 $ 9,204 Reinvestment of distributions 22 276 -- -- Less shares repurchased -- -- -- -- ------------------------------------------------------------------------------------------------------- Net increase 596 $ 7,316 784 $ 9,204 ======================================================================================================= Class Y Shares sold 25,592 $ 323,666 45,377 $ 578,975 Reinvestment of distributions 1,041 12,977 6,788 84,446 Less shares repurchased (44,648) (559,723) (68,556) (852,945) ------------------------------------------------------------------------------------------------------- Net decrease (18,015) $ (223,080) (16,391) $ (189,524) ======================================================================================================= The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 57 --------------------------------------------------------------------------------------------------------------------------- Pioneer Solutions - Conservative Fund ------------------------------------------------------------- Six Months Ended Year Year Year Year Year 1/31/17 Ended Ended Ended Ended Ended (unaudited) 7/31/16 7/31/15 7/31/14 7/31/13 7/31/12 --------------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 10.41 $ 11.78 $ 11.86 $ 11.42 $ 10.73 $ 10.85 --------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.12 $ 0.26 $ 0.30 $ 0.25 $ 0.28 $ 0.28 Net realized and unrealized gain (loss) on investments (0.14) (0.21) (0.07) 0.55 0.64 (0.09) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.02) $ 0.05 $ 0.23 $ 0.80 $ 0.92 $ 0.19 --------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.24) $ (0.29) $ (0.31) $ (0.36) $ (0.23) $ (0.31) Net realized gain -- (1.13) -- -- -- -- --------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.24) $ (1.42) $ (0.31) $ (0.36) $ (0.23) $ (0.31) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.26) $ (1.37) $ (0.08) $ 0.44 $ 0.69 $ (0.12) --------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.15 $ 10.41 $ 11.78 $ 11.86 $ 11.42 $ 10.73 =========================================================================================================================== Total return* (0.22)%** 0.89% 2.01% 7.10% 8.72% 1.85% Ratio of net expenses to average net assets+ 0.70%*** 0.70% 0.71% 0.76% 0.77% 0.78% Ratio of net investment income to average net assets+ 2.39%*** 2.43% 2.53% 2.15% 2.51% 2.69% Portfolio turnover rate 21% 23% 108% 12% 17% 20% Net assets, end of period (in thousands) $43,364 $46,499 $48,721 $46,873 $44,239 $42,613 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: 0.82%*** 0.86% 0.79% 0.76% 0.77% 0.82% Total expenses to average net assets Net investment income to average net assets 2.27%*** 2.27% 2.45% 2.15% 2.51% 2.65% =========================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Not annualized. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. *** Annualized. The accompanying notes are an integral part of these financial statements. 58 Pioneer Solutions Funds | Semiannual Report | 1/31/17 --------------------------------------------------------------------------------------------------------------------------- Pioneer Solutions - Conservative Fund ------------------------------------------------------------- Six Months Ended Year Year Year Year Year 1/31/17 Ended Ended Ended Ended Ended (unaudited) 7/31/16 7/31/15 7/31/14 7/31/13 7/31/12 --------------------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 10.06 $ 11.41 $ 11.51 $ 11.09 $ 10.44 $ 10.56 --------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.08 $ 0.17 $ 0.19 $ 0.16 $ 0.18 $ 0.20 Net realized and unrealized gain (loss) on investments (0.14) (0.19) (0.06) 0.54 0.63 (0.09) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.06) $ (0.02) $ 0.13 $ 0.70 $ 0.81 $ 0.11 --------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.15) $ (0.20) $ (0.23) $ (0.28) $ (0.16) $ (0.23) Net realized gain -- (1.13) -- -- -- -- --------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.15) $ (1.33) $ (0.23) $ (0.28) $ (0.16) $ (0.23) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.21) $ (1.35) $ (0.10) $ 0.42 $ 0.65 $ (0.12) --------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.85 $ 10.06 $ 11.41 $ 11.51 $ 11.09 $ 10.44 =========================================================================================================================== Total return* (0.56)%** 0.18% 1.15% 6.42% 7.83% 1.16% Ratio of net expenses to average net assets+ 1.45%*** 1.45% 1.45% 1.49% 1.51% 1.56% Ratio of net investment income to average net assets+ 1.58%*** 1.69% 1.69% 1.40% 1.70% 1.91% Portfolio turnover rate 21% 23% 108% 12% 17% 20% Net assets, end of period (in thousands) $15,330 $17,586 $21,260 $22,290 $20,542 $16,257 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: 1.56%*** 1.59% 1.53% 1.49% 1.51% 1.56% Total expenses to average net assets Net investment income to average net assets 1.47%*** 1.55% 1.61% 1.40% 1.70% 1.91% =========================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Not annualized. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. *** Annualized. The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 59 Financial Highlights (continued) ----------------------------------------------------------------------------------------- Pioneer Solutions - Conservative Fund ------------------------------------- Six Months Ended Year 1/31/17 Ended 7/1/15 to (unaudited) 7/31/16 7/31/15 ----------------------------------------------------------------------------------------- Class R Net asset value, beginning of period $ 10.38 $ 11.78 $ 11.74 ----------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.11 $ 0.25 $ 0.02 Net realized and unrealized gain (loss) on investments (0.15) (0.22) 0.02 ----------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.04) $ 0.03 $ 0.04 ----------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.21) $ (0.30) $ -- Net realized gain -- (1.13) -- ----------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.21) $ (1.43) $ -- ----------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.25) $ (1.40) $ 0.04 ----------------------------------------------------------------------------------------- Net asset value, end of period $ 10.13 $ 10.38 $ 11.78 ========================================================================================= Total return* (0.33)%** 0.66% 0.34%** Ratio of net expenses to average net assets+ 0.90%*** 0.90% 0.93%*** Ratio of net investment income to average net assets+ 2.17%*** 2.30% 1.58%*** Portfolio turnover rate 21% 23% 108% Net assets, end of period (in thousands) $ 9 $ 9 $ 10 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Total expenses to average net assets 1.81%*** 1.50% 1.41%*** Net investment income to average net assets 1.26%*** 1.70% 1.10%*** ========================================================================================= (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Not annualized. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. *** Annualized. The accompanying notes are an integral part of these financial statements. 60 Pioneer Solutions Funds | Semiannual Report | 1/31/17 --------------------------------------------------------------------------------------------------------------------------- Pioneer Solutions - Conservative Fund ------------------------------------------------------------- Six Months Ended Year Year Year Year Year 1/31/17 Ended Ended Ended Ended Ended (unaudited) 7/31/16 7/31/15 7/31/14 7/31/13 7/31/12 --------------------------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 9.83 $ 11.18 $ 11.32 $ 10.86 $ 10.21 $ 10.41 --------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.12 $ 0.24 $ 0.21 $ 0.24 $ 0.20 $ 0.13 Net realized and unrealized gain (loss) on investments (0.15) (0.19) (0.01) 0.49 0.61 (0.10) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.03) $ 0.05 $ 0.20 $ 0.73 $ 0.81 $ 0.03 --------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.24) $ (0.27) $ (0.34) $ (0.27) $ (0.16) $ (0.23) Net realized gain -- (1.13) -- -- -- -- --------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.24) $ (1.40) $ (0.34) $ (0.27) $ (0.16) $ (0.23) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.27) $ (1.35) $ (0.14) $ 0.46 $ 0.65 $ (0.20) --------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.56 $ 9.83 $ 11.18 $ 11.32 $ 10.86 $ 10.21 =========================================================================================================================== Total return* (0.24)%** 0.95% 1.81% 6.83% 8.00% 0.34% Ratio of net expenses to average net assets+ 0.65%*** 0.65% 0.98% 0.98% 1.43% 2.26% Ratio of net investment income to average net assets+ 2.42%*** 2.37% 1.84% 2.13% 1.88% 1.28% Portfolio turnover rate 21% 23% 108% 12% 17% 20% Net assets, end of period (in thousands) $ 108 $ 92 $ 181 $ 123 $ 141 $ 65 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: 0.87%*** 0.82% 0.98% 0.98% 1.43% 2.26% Total expenses to average net assets Net investment income to average net assets 2.20%*** 2.19% 1.84% 2.13% 1.88% 1.28% =========================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Not annualized. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. *** Annualized. The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 61 Financial Highlights (continued) ---------------------------------------------------------------------------------------------------------------------------------- Pioneer Solutions - Balanced Fund --------------------------------------------------------------------- Six Months Ended Year Year Year Year Year 1/31/17 Ended Ended Ended Ended Ended (unaudited) 7/31/16 7/31/15 7/31/14 7/31/13 7/31/12 ---------------------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 11.35 $ 12.78 $ 12.73 $ 11.72 $ 10.46 $ 10.74 ---------------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.12 $ 0.20 $ 0.29 $ 0.19 $ 0.21 $ 0.18 Net realized and unrealized gain (loss) on investments (0.01) (0.50) 0.12 1.03 1.27 (0.22) ---------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.11 $ (0.30) $ 0.41 $ 1.22 $ 1.48 $ (0.04) ---------------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.24) $ (0.27) $ (0.36) $ (0.21) $ (0.22) $ (0.24) Net realized gain -- (0.86) -- -- -- -- ---------------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.24) $ (1.13) $ (0.36) $ (0.21) $ (0.22) $ (0.24) ---------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.13) $ (1.43) $ 0.05 $ 1.01 $ 1.26 $ (0.28) ---------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 11.22 $ 11.35 $ 12.78 $ 12.73 $ 11.72 $ 10.46 ================================================================================================================================== Total return* 1.01%** (2.11)% 3.33% 10.48% 14.32% (0.27)% Ratio of net expenses to average net assets+ 0.66%*** 0.67% 0.66% 0.64% 0.66% 0.72% Ratio of net investment income to average net assets+ 2.16%*** 1.77% 2.25% 1.57% 1.85% 1.75% Portfolio turnover rate 16% 16% 89% 10% 9% 9% Net assets, end of period (in thousands) $115,982 $125,608 $140,863 $136,511 $128,425 $118,833 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: 0.66%*** 0.67% 0.66% 0.64% 0.66% 0.72% Total expenses to average net assets Net investment income to average net assets 2.16%*** 1.77% 2.25% 1.57% 1.85% 1.75% ================================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Not annualized. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. *** Annualized. The accompanying notes are an integral part of these financial statements. 62 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ----------------------------------------------------------------------------------------------------------------------------- Pioneer Solutions - Balanced Fund --------------------------------------------------------------- Six Months Ended Year Year Year Year Year 1/31/17 Ended Ended Ended Ended Ended (unaudited) 7/31/16 7/31/15 7/31/14 7/31/13 7/31/12 ----------------------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 10.44 $ 11.84 $ 11.82 $ 10.92 $ 9.77 $ 10.07 ----------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.07 $ 0.12 $ 0.17 $ 0.09 $ 0.12 $ 0.10 Net realized and unrealized gain (loss) on investments -- (0.47) 0.14 0.96 1.19 (0.22) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.07 $ (0.35) $ 0.31 $ 1.05 $ 1.31 $ (0.12) ----------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.16) $ (0.19) $ (0.29) $ (0.15) $ (0.16) $ (0.18) Net realized gain -- (0.86) -- -- -- -- ----------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.16) $ (1.05) $ (0.29) $ (0.15) $ (0.16) $ (0.18) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.09) $ (1.40) $ 0.02 $ 0.90 $ 1.15 $ (0.30) ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.35 $ 10.44 $ 11.84 $ 11.82 $ 10.92 $ 9.77 ----------------------------------------------------------------------------------------------------------------------------- Total return* 0.71%** (2.81)% 2.64% 9.70% 13.56% (1.08)% ============================================================================================================================= Ratio of net expenses to average net assets+ 1.37%*** 1.37% 1.35% 1.33% 1.34% 1.41% Ratio of net investment income to average net assets+ 1.44%*** 1.10% 1.44% 0.81% 1.15% 1.06% Portfolio turnover rate 16% 16% 89% 10% 9% 9% Net assets, end of period (in thousands) $53,745 $59,444 $74,720 $75,377 $64,989 $53,594 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: 1.37%*** 1.37% 1.35% 1.33% 1.34% 1.41% Total expenses to average net assets Net investment income to average net assets 1.44%*** 1.10% 1.44% 1.44% 1.15% 1.06% ============================================================================================================================= (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Not annualized. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. *** Annualized. The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 63 Financial Highlights (continued) ------------------------------------------------------------------------------------------------------------------------- Pioneer Solutions - Balanced Fund --------------------------------------------------- Six Months Ended Year 1/31/17 Ended 7/1/15 to (unaudited) 7/31/16 7/31/15 ------------------------------------------------------------------------------------------------------------------------- Class R Net asset value, beginning of period $ 11.30 $ 12.78 $ 12.74 ------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.12 $ 0.15 $ 0.01 Net realized and unrealized gain (loss) on investments (0.01) (0.47) 0.03 ------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.11 $ (0.32) $ 0.04 ------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.23) $ (0.30) $ -- Net realized gain -- (0.86) -- ------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.23) $ (1.16) $ -- ------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.12) $ (1.48) $ 0.04 ------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 11.18 $ 11.30 $ 12.78 ========================================================================================================================= Total return* 1.02%** (2.34)% 0.31%** Ratio of net expenses to average net assets+ 0.90%*** 0.90% 0.93%*** Ratio of net investment income to average net assets+ 2.18%*** 1.28% 0.66%*** Portfolio turnover rate 16% 16% 89% Net assets, end of period (in thousands) $ 19 $ 14 $ 10 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Total expenses to average net assets 1.59%*** 1.58% 1.00%*** Net investment income to average net assets 1.49%*** 0.60% 0.58%*** ========================================================================================================================= (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Not annualized. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. *** Annualized. The accompanying notes are an integral part of these financial statements. 64 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ------------------------------------------------------------------------------------------------------------------------------- Pioneer Solutions - Balanced Fund ----------------------------------------------------------------- Six Months Ended Year Year Year Year Year 1/31/17 Ended Ended Ended Ended Ended (unaudited) 7/31/16 7/31/15 7/31/14 7/31/13 7/31/12 ------------------------------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 11.51 $ 12.94 $ 12.88 $ 11.86 $ 10.58 $ 10.88 ------------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.12 $ 0.26 $ 0.37 $ 0.23 $ 0.25 $ 0.22 Net realized and unrealized gain (loss) on investments 0.01 (0.53) 0.09 1.03 1.28 (0.23) ------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.13 $ (0.27) $ 0.46 $ 1.26 $ 1.53 $ (0.01) ------------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.27) $ (0.30) $ (0.40) $ (0.24) $ (0.25) $ (0.29) Net realized gain -- (0.86) -- -- -- -- ------------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.27) $ (1.16) $ (0.40) $ (0.24) $ (0.25) $ (0.29) ------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.14) $ (1.43) $ 0.06 $ 1.02 $ 1.28 $ (0.30) ------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 11.37 $ 11.51 $ 12.94 $ 12.88 $ 11.86 $ 10.58 =============================================================================================================================== Total return* 1.19%** (1.85)% 3.63% 10.68% 14.68% 0.00%(b) Ratio of net expenses to average net assets+ 0.48%*** 0.40% 0.36% 0.40% 0.36% 0.38% Ratio of net investment income to average net assets+ 2.11%*** 2.22% 2.92% 1.88% 2.26% 2.14% Portfolio turnover rate 16% 16% 89% 10% 9% 9% Net assets, end of period (in thousands) $ 764 $ 1,107 $ 1,165 $ 3,239 $ 4,134 $ 5,208 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: 0.48%*** 0.40% 0.36% 0.40% 0.36% 0.38% Total expenses to average net assets Net investment income to average net assets 2.11%*** 2.22% 2.92% 1.88% 2.26% 2.14% =============================================================================================================================== (a) Calculated using average shares outstanding for the period. (b) Amount rounds to less than 0.01%. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Not annualized. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. *** Annualized. The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 65 Financial Highlights (continued) ---------------------------------------------------------------------------------------------------------------------------------- Pioneer Solutions - Growth Fund --------------------------------------------------------------------- Six Months Ended Year Year Year Year Year 1/31/17 Ended Ended Ended Ended Ended (unaudited) 7/31/16 7/31/15 7/31/14 7/31/13 7/31/12 ---------------------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 12.36 $ 13.84 $ 13.60 $ 12.32 $ 10.75 $ 11.09 ---------------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.11 $ 0.13 $ 0.29 $ 0.16 $ 0.17 $ 0.14 Net realized and unrealized gain (loss) on investments 0.25 (0.59) 0.38 1.31 1.57 (0.29) ---------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.36 $ (0.46) $ 0.67 $ 1.47 $ 1.74 $ (0.15) ---------------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.16) $ (0.18) $ (0.43) $ (0.19) $ (0.17) $ (0.19) Net realized gain (0.07) (0.84) -- -- -- -- ---------------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.23) $ (1.02) $ (0.43) $ (0.19) $ (0.17) $ (0.19) ---------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 0.13 $ (1.48) $ 0.24 $ 1.28 $ 1.57 $ (0.34) ---------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 12.49 $ 12.36 $ 13.84 $ 13.60 $ 12.32 $ 10.75 ================================================================================================================================== Total return* 2.90%** (3.23)% 5.08% 11.96% 16.40% (1.31)% Ratio of net expenses to average net assets+ 0.64%*** 0.65% 0.69% 0.68% 0.69% 0.76% Ratio of net investment income to average net assets+ 1.74%*** 1.08% 2.15% 1.24% 1.50% 1.29% Portfolio turnover rate 18% 10% 98% 8% 6% 7% Net assets, end of period (in thousands) $234,938 $242,649 $273,763 $163,349 $149,586 $134,988 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: 0.64%*** 0.65% 0.69% 0.68% 0.69% 0.76% Total expenses to average net assets Net investment income to average net assets 1.74%*** 1.08% 2.15% 1.24% 1.50% 1.29% ================================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Not annualized. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. *** Annualized. The accompanying notes are an integral part of these financial statements. 66 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ------------------------------------------------------------------------------------------------------------------------------ Pioneer Solutions - Growth Fund ---------------------------------------------------------------- Six Months Ended Year Year Year Year Year 1/31/17 Ended Ended Ended Ended Ended (unaudited) 7/31/16 7/31/15 7/31/14 7/31/13 7/31/12 ------------------------------------------------------------------------------------------------------------------------------ Class C Net asset value, beginning of period $ 11.63 $ 13.08 $ 12.82 $ 11.65 $ 10.18 $ 10.50 ------------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income (a) $ 0.06 $ 0.05 $ 0.12 $ 0.06 $ 0.09 $ 0.06 Net realized and unrealized gain (loss) on investments 0.23 (0.57) 0.43 1.23 1.48 (0.27) ------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 0.29 $ (0.52) $ 0.55 $ 1.29 $ 1.57 $ (0.21) ------------------------------------------------------------------------------------------------------------------------------ Distributions to shareowners: Net investment income $ (0.07) $ (0.09) $ (0.29) $ (0.12) $ (0.10) $ (0.11) Net realized gain (0.07) (0.84) -- -- -- -- ------------------------------------------------------------------------------------------------------------------------------ Total distributions to shareowners $ (0.14) $ (0.93) $ (0.29) $ (0.12) $ (0.10) $ (0.11) ------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 0.15 $ (1.45) $ 0.26 $ 1.17 $ 1.47 $ (0.32) ------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 11.78 $ 11.63 $ 13.08 $ 12.82 $ 11.65 $ 10.18 ============================================================================================================================== Total return* 3.59%** (3.89)% 4.36% 11.09% 15.58% (1.91)% Ratio of net expenses to average net assets+ 1.35%*** 1.35% 1.38% 1.37% 1.40% 1.46% Ratio of net investment income to average net assets+ 0.97%*** 0.47% 0.95% 0.46% 0.78% 0.59% Portfolio turnover rate 18% 10% 98% 8% 6% 7% Net assets, end of period (in thousands) $70,715 $76,055 $92,650 $63,333 $53,032 $45,570 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: 1.35%*** 1.35% 1.38% 1.37% 1.40% 1.46% Total expenses to average net assets Net investment income to average net assets 0.97%*** 0.47% 0.95% 0.46% 0.78% 0.59% ============================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Not annualized. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. *** Annualized. The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 67 Financial Highlights (continued) ------------------------------------------------------------------------------------------------------------------------- Pioneer Solutions - Growth Fund ---------------------------------------------------- Six Months Ended Year 1/31/17 Ended 7/1/15 to (unaudited) 7/31/16 7/31/15 ------------------------------------------------------------------------------------------------------------------------- Class R Net asset value, beginning of period $ 12.30 $ 13.84 $ 13.78 ------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.12 $ 0.02 $ (0.00)(b) Net realized and unrealized gain (loss) on investments 0.22 (0.51) 0.06 ------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.34 $ (0.49) $ 0.06 ------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.15) $ (0.21) $ -- Net realized gain (0.07) (0.84) -- ------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.22) $ (1.05) $ -- ------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 0.12 $ (1.54) $ 0.06 ------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 12.42 $ 12.30 $ 13.84 ========================================================================================================================= Total return* 2.78%** (3.47)% 0.44%** Ratio of net expenses to average net assets+ 0.90%*** 0.90% 0.89%*** Ratio of net investment income to average net assets+ 1.88%*** 0.18% (0.38)%*** Portfolio turnover rate 18% 10% 98% Net assets, end of period (in thousands) $ 26 $ 19 $ 10 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Total expenses to average net assets 1.71%*** 1.22% 0.89%*** Net investment income to average net assets 1.07%*** (0.14)% (0.38)%*** ========================================================================================================================= (a) Calculated using average shares outstanding for the period. (b) Amount rounds to greater than $(0.005) per share. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Not annualized. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. *** Annualized. The accompanying notes are an integral part of these financial statements. 68 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ----------------------------------------------------------------------------------------------------------------------------- Pioneer Solutions - Growth Fund --------------------------------------------------------------- Six Months Ended Year Year Year Year Year 1/31/17 Ended Ended Ended Ended Ended (unaudited) 7/31/16 7/31/15 7/31/14 7/31/13 7/31/12 ----------------------------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 12.63 $ 14.11 $ 13.88 $ 12.56 $ 10.95 $ 11.45 ----------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.08 $ 0.19 $ 0.26 $ 0.28 $ 0.20 $ 0.17 Net realized and unrealized gain (loss) on investments 0.30 (0.62) 0.46 1.25 1.61 (0.44) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.38 $ (0.43) $ 0.72 $ 1.53 $ 1.81 $ (0.27) ----------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.20) $ (0.21) $ (0.49) $ (0.21) $ (0.20) $ (0.23) Net realized gain (0.07) (0.84) -- -- -- -- ----------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.27) $ (1.05) $ (0.49) $ (0.21) $ (0.20) $ (0.23) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 0.11 $ (1.48) $ 0.23 $ 1.32 $ 1.61 $ (0.50) ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 12.74 $ 12.63 $ 14.11 $ 13.88 $ 12.56 $ 10.95 ============================================================================================================================= Total return* 2.99%** (2.96)% 5.30% 12.25% 16.70% (2.28)% Ratio of net expenses to average net assets+ 0.44%*** 0.37% 0.47% 0.40% 0.44% 0.50% Ratio of net investment income to average net assets+ 1.32%*** 1.53% 1.87% 2.10% 1.71% 1.60% Portfolio turnover rate 18% 10% 98% 8% 6% 7% Net assets, end of period (in thousands) $ 967 $ 1,186 $ 1,556 $ 1,031 $ 1,314 $ 2,012 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Total expenses to average net assets 0.44%*** 0.37% 0.47% 0.40% 0.44% 0.50% Net investment income to average net assets 1.32%*** 1.53% 1.87% 2.10% 1.71% 1.60% ============================================================================================================================= (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Not annualized. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. *** Annualized. The accompanying notes are an integral part of these financial statements. Pioneer Solutions Funds | Semiannual Report | 1/31/17 69 Notes to Financial Statements | 1/31/17 (unaudited) 1. Organization and Significant Accounting Policies Pioneer Asset Allocation Trust (the "Trust") is organized as a Delaware statutory trust and is registered with the Securities and Exchange Commission under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. The Trust consists of three separate funds (each, a "Fund," and collectively, the "Funds"), each issuing four classes of shares as follows: Pioneer Solutions - Conservative Fund ("Conservative Fund") Pioneer Solutions - Growth Fund ("Growth Fund") Pioneer Solutions - Balanced Fund ("Balanced Fund"). The investment objective of each of the Conservative Fund, the Growth Fund and the Balanced Fund is to seek long-term capital growth and current income. Each Fund is a "fund of funds". Each Fund seeks to achieve its investment objective by investing primarily in other funds ("underlying funds"). Each Fund may also invest directly in securities and use derivatives. Each Fund invests mainly in funds managed by Pioneer Investment Management, Inc. (PIM). Each Fund may also invest in unaffiliated mutual funds or exchange-traded funds (ETFs). The Funds indirectly pay a portion of the expenses incurred by underlying funds. Consequently, an investment in the Funds entails more direct and indirect expenses than direct investment in the applicable underlying funds. Each Fund offers four classes of shares designated as Class A, Class C, Class R and Class Y shares. Each class of shares represents an interest in the same portfolio of investments of each 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 each Fund gives the Board of Trustees the flexibility to specify either per-share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per-share voting, each share of a class of a 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 70 Pioneer Solutions Funds | Semiannual Report | 1/31/17 date. Each share class has exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. There is no distribution plan for Class Y shares. The financial statements have been prepared in conformity with U.S. generally accepted accounting principles (U.S. GAAP) that require the management of the Funds to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from these estimates. Each Fund is an investment company and follows investment company accounting and reporting guidance under U.S. GAAP. The following is a summary of significant accounting policies followed by the Funds in the preparation of their financial statements: A. Security Valuation The net asset value of the Funds are computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. Shares of open-end registered investment companies (including money market mutual funds) are valued at such funds' net asset value. Repurchase agreements are valued at par. Cash may include overnight time deposits at approved financial institutions. Fixed-income securities are valued by using prices supplied by independent pricing services, which consider such factors as market prices, market events, quotations from one or more brokers, Treasury spreads, yields, maturities and ratings, or may use a pricing matrix or other fair value methods or techniques to provide an estimated value of the security or instrument. A pricing matrix is a means of valuing a debt security on the basis of current market prices for other debt securities, historical trading patterns in the market for fixed income securities and/or other factors. Non-U.S. debt securities that are listed on an exchange will be valued at the bid price obtained from an independent third party pricing service. When independent third party pricing services are unable to supply prices, or when prices or market quotations are considered to be unreliable, the value of that security may be determined using quotations from one or more broker-dealers. Swap contracts, including interest rate swaps, caps and floors (other than centrally cleared swap contracts) are valued at the dealer quotations obtained from reputable International Swap Dealers Association members. Centrally cleared swaps are valued at the daily settlement price provided by the central clearing counterparty. Pioneer Solutions Funds | Semiannual Report | 1/31/17 71 Futures contracts are generally valued at the closing settlement price established by the exchange on which they are traded. Options contracts are generally valued at the mean between the last bid and ask prices on the principal exchange where they are traded. Over-the-counter ("OTC") options and options on swaps ("swaptions") are valued using prices supplied by independent pricing services, which consider such factors as market prices, market events, quotations from one or more brokers, Treasury spreads, yields, maturities and ratings, or may use a pricing matrix or other fair value methods or techniques to provide an estimated value of the security or instrument. Forward foreign currency exchange contracts are valued daily using the foreign exchange rate or, for longer term forward contract positions, the spot currency rate, in each case provided by a third party pricing service. Contracts whose forward settlement date falls between two quoted days are valued by interpolation. Securities for which independent pricing services or broker-dealers are unable to supply prices or for which market prices and/or quotations are not readily available or are considered to be unreliable are valued by a fair valuation team comprised of certain personnel of Pioneer Investment Management, Inc. (PIM), the Fund's investment adviser and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), pursuant to procedures adopted by the Fund's Board of Trustees. PIM's fair valuation team uses fair value methods approved by the Valuation Committee of the Board of Trustees. PIM's fair valuation team is responsible for monitoring developments that may impact fair valued securities and for discussing and assessing fair values on an ongoing basis, and at least quarterly, with the Valuation Committee of the Board of Trustees. Inputs used when applying fair value methods to value a security may include credit ratings, the financial condition of the company, current market conditions and comparable securities. The Funds 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 each Fund's net asset value. Examples of a significant event might include political or economic news, corporate restructurings, natural disasters, terrorist activity or trading halts. Thus, the valuation of each Fund's securities may differ significantly from exchange prices and such differences could be material. At January 31, 2017, the Funds held no securities valued using fair value methods (other than securities valued using prices supplied by independent pricing services, broker-dealers or using a third party insurance industry pricing model). 72 Pioneer Solutions Funds | Semiannual Report | 1/31/17 B. Investment Income and Transactions Dividend income and realized capital gain distributions from investment company shares held are recorded on the ex-dividend date. Interest income, including interest on income bearing cash accounts, is recorded on the accrual basis. Dividend and interest income are reported net of unrecoverable foreign taxes withheld at the applicable country rates. Security transactions are recorded as of trade date. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. C. Foreign Currency Translation The books and records of the Funds are maintained in U.S. dollars. Amounts denominated in foreign currencies are translated into U.S. dollars using current exchange rates. Net realized gains and losses on foreign currency transactions, if any, represent, among other things, the net realized gains and losses on foreign currency contracts, disposition of foreign currencies and the difference between the amount of income accrued and the U.S. dollars actually received. Further, the effects of changes in foreign currency exchange rates on investments are not segregated in the Statement of Operations from the effects of changes in the market price of those securities but are included with the net realized and unrealized gain or loss on investments. D. Forward Foreign Currency Contracts The Funds may enter into forward foreign currency contracts (contracts) for the purchase or sale of a specific foreign currency at a fixed price on a future date. All contracts are marked to market daily at the applicable exchange rates, and any resulting unrealized appreciation or depreciation are recorded in the Funds' financial statements. The Funds record realized gains and losses at the time a contract is offset by entry into a closing transaction or extinguished by delivery of the currency. Risks may arise upon entering into these contracts from the potential inability of counterparties to meet the terms of the contracts and from unanticipated movements in the value of foreign currencies relative to the U.S. dollar (see Note 5). E. Federal Income Taxes It is the Funds' policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all taxable income and net realized capital gains, if any, to shareholders. Therefore, no federal income tax provisions are required. Tax years for the prior three fiscal years remain subject to examination by federal and state tax authorities. Pioneer Solutions Funds | Semiannual Report | 1/31/17 73 The amount and character of income and capital gain distributions to shareowners are determined in accordance with federal income tax rules, which may differ from U.S. GAAP. Distributions in excess of net investment income or net realized gains are temporary overdistributions for financial statement purposes resulting from differences in the recognition or classification of income or distributions for financial statement and tax purposes. Capital accounts within the financial statements are adjusted for permanent book/tax differences to reflect tax character, but are not adjusted for temporary differences. The tax character of current year distributions paid will be determined at the end of the current taxable year. The tax character of distributions paid during the year ended July 31, 2016 were as follows: --------------------------------------------------------------------------- 2016 --------------------------------------------------------------------------- Conservative Fund Distributions paid from: Ordinary income $ 1,550,713 Long-term capital gains 6,622,753 --------------------------------------------------------------------------- Total $ 8,173,466 --------------------------------------------------------------------------- Balanced Fund Distributions paid from: Ordinary income $ 4,100,023 Long-term capital gains 14,493,043 --------------------------------------------------------------------------- Total $18,593,066 --------------------------------------------------------------------------- Growth Fund Distributions paid from: Ordinary income $ 3,637,690 Long-term capital gains 22,607,725 --------------------------------------------------------------------------- Total $26,245,415 --------------------------------------------------------------------------- The following table shows the components of distributable earnings on a federal income tax basis at July 31, 2016: --------------------------------------------------------------------------- Conservative Fund Balanced Fund Growth Fund --------------------------------------------------------------------------- Undistributed ordinary income $ 593,085 $ 1,350,820 $ -- Undistributed long-term capital gains -- -- 889,982 Capital loss carryforward (1,104,901) (3,254,588) -- Unrealized appreciation/ depreciation 307,069 4,180,830 12,468,679 --------------------------------------------------------------------------- Total $ (204,747) $ 2,277,062 $13,358,661 --------------------------------------------------------------------------- The differences between book-basis and tax-basis net unrealized appreciation are attributable to the tax deferral of losses on wash sales. 74 Pioneer Solutions Funds | Semiannual Report | 1/31/17 F. Fund Shares The Funds record sales and repurchases of Fund shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Funds and a wholly owned indirect subsidiary of UniCredit, earned the following in underwriting commissions on the sale of Class A shares during the six months ended January 31, 2017: --------------------------------------------------------------------------- Fund Amount --------------------------------------------------------------------------- Conservative Fund $ 7,150 Balanced Fund 13,965 Growth Fund 30,960 G. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on its respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A and Class C shares of each Fund, respectively (see Note 4). Class Y shares do not pay distribution fees. All expenses and fees paid to the Fund's transfer agent, for its services are allocated among the class of shares based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by each of the Funds with respect to each class of shares are calculated in the same manner and at the same time, except that net investment income dividends to Class A, Class C, Class R and Class Y shares of each Fund can reflect different transfer agent and distribution expense rates. H. Risks Interest rates in the U.S. recently have been historically low, so the Fund faces a heightened risk that interest rates may rise. A general rise in interest rates may cause investors to move out of fixed income securities on a large scale, which could adversely affect the price and liquidity of fixed income securities and could also result in increased redemptions from the Fund. Some of the underlying funds can invest in either high yield securities or small/emerging growth companies. Investments in these types of securities generally are subject to greater volatility than either higher-grade securities or more established companies in more developed markets, respectively. The Funds' prospectus contains unaudited information regarding the Funds' principal risks. Please refer to that document when considering the Funds' principal risks. Pioneer Solutions Funds | Semiannual Report | 1/31/17 75 I. Futures Contracts The Funds may enter into futures transactions in order to attempt to hedge against changes in interest rates, securities prices and currency exchange rates or to seek to increase total return. Futures contracts are types of derivatives. All futures contracts entered into by the Funds are traded on a futures exchange. Upon entering into a futures contract, the Funds are required to deposit with a broker an amount of cash or securities equal to the minimum "initial margin" requirements of the associated futures exchange. The amount of cash deposited with the broker as collateral at January 31, 2017, and is included in "Restricted Cash" in the Statement of Assets and Liabilities, was as follows: --------------------------------------------------------------------------- Conservative Balanced Growth Fund Fund Fund --------------------------------------------------------------------------- Futures Collateral $272,618 $1,100,419 $ 1,683,656 Subsequent payments for futures contracts ("variation margin") are paid or received by the Funds, depending on the daily fluctuation in the value of the contracts, and are recorded by the Funds as unrealized appreciation or depreciation. When the contract is closed, the Funds realize a gain or loss equal to the difference between the opening and closing value of the contract as well as any fluctuation in foreign currency exchange rates where applicable. The use of futures contracts 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. The average value of contracts open during the six months ended January 31, 2017, was as follows: --------------------------------------------------------------------------- Conservative Balanced Growth Fund Fund Fund --------------------------------------------------------------------------- $(378,264) $(5,691,854) $(13,084,000) 76 Pioneer Solutions Funds | Semiannual Report | 1/31/17 At January 31, 2017, open futures contracts were as follows: Pioneer Solutions - Conservative Fund ----------------------------------------------------------------------------------------------------------- Number of Unrealized Contracts Settlement Appreciation Type Counterparty Long/(Short) Month Value (Depreciation) ----------------------------------------------------------------------------------------------------------- E-Mini NASDAQ 100 Societe Generale 3 3/17 $ 306,765 $ 3,324 E-Mini S&P 500 Morgan Stanley & Co. 2 3/17 227,450 (173) E-Mini XAI Industrial Morgan Stanley & Co. (5) 3/17 (316,500) (442) Euro BUXL 30 Year Bond UBS AG (6) 3/17 (1,083,205) 4,384 Euro Stoxx 50 Morgan Stanley & Co. (18) 3/17 (628,544) (10,729) Euro-Bund UBS AG 12 3/17 2,100,718 2,578 Euro-Schatz UBS AG (44) 3/17 (5,331,697) (6,057) FTSE 100 Credit Suisse 3 3/17 265,834 (7,723) FTSE 250 Credit Suisse (7) 3/17 (318,983) 2,859 H-Shares Index UBS AG (12) 3/17 (760,715) (26,525) Japan 10 Year Bond UBS AG (1) 3/17 (1,328,666) 1,950 MINI DJIA Societe Generale (3) 3/17 (296,880) 211 Nikkei 225 (SGX) UBS AG 12 3/17 1,010,062 23,810 S&P/TSX 60 Morgan Stanley & Co. 2 3/17 278,675 3,344 Stoxx 600 AUTO Societe Generale 22 3/17 650,517 20,643 Stoxx Europe 600 Credit Suisse (35) 3/17 (677,597) (13,301) U.S. 5 Year Note UBS AG 60 3/17 7,072,031 (8,437) U.S. 10 Year Note UBS AG 21 3/17 2,613,844 (10,172) U.S. Ultra Bond UBS AG (10) 3/17 (1,606,875) 19,063 XAK Technology Morgan Stanley & Co. 6 3/17 300,600 5,389 MSCI World IX Societe Generale (6) 6/17 (297,840) (5,460) ----------------------------------------------------------------------------------------------------------- $ 2,178,994 $ (1,464) =========================================================================================================== Pioneer Solutions Funds | Semiannual Report | 1/31/17 77 Pioneer Solutions - Balanced Fund ----------------------------------------------------------------------------------------------------------- Number of Unrealized Contracts Settlement Appreciation Type Counterparty Long/(Short) Month Value (Depreciation) ----------------------------------------------------------------------------------------------------------- E-Mini NASDAQ 100 Societe Generale 9 3/17 $ 920,295 $ 9,975 E-Mini S&P 500 Morgan Stanley & Co. (30) 3/17 (3,411,750) (14,438) E-Mini XAI Industrial Morgan Stanley & Co. (14) 3/17 (886,199) (1,238) Euro BUXL 30 Year Bond UBS AG (19) 3/17 (3,430,150) 12,374 Euro Stoxx 50 Morgan Stanley & Co. (146) 3/17 (5,098,191) (87,020) Euro-Bund UBS AG 37 3/17 6,477,215 7,832 Euro-Schatz UBS AG (130) 3/17 (15,752,742) (17,897) FTSE 100 Credit Suisse 10 3/17 886,113 (25,743) FTSE 250 Credit Suisse (19) 3/17 (865,811) 7,760 H-Shares Index UBS AG (35) 3/17 (2,218,753) (77,364) Japan 10 Year Bond UBS AG (3) 3/17 (3,985,994) 5,851 MINI DJIA Societe Generale (9) 3/17 (890,640) 632 Nikkei 225 (SGX) UBS AG 28 3/17 2,356,810 56,721 S&P/TSX 60 Morgan Stanley & Co. 7 3/17 975,362 11,706 Stoxx 600 AUTO Societe Generale 66 3/17 1,951,551 61,929 Stoxx Europe 600 Credit Suisse (101) 3/17 (1,955,352) (38,382) U.S. 5 Year Note UBS AG 174 3/17 20,508,891 (24,469) U.S. 10 Year Note UBS AG 56 3/17 6,970,250 (27,125) U.S. Ultra Bond UBS AG (28) 3/17 (4,499,250) 53,374 XAK Technology Morgan Stanley & Co. 18 3/17 901,800 16,167 MSCI World IX Societe Generale (17) 6/17 (843,880) (15,469) ----------------------------------------------------------------------------------------------------------- $ (1,890,425) $ (84,824) =========================================================================================================== 78 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Pioneer Solutions - Growth Fund ----------------------------------------------------------------------------------------------------------- Number of Unrealized Contracts Settlement Appreciation Type Counterparty Long/(Short) Month Value (Depreciation) ----------------------------------------------------------------------------------------------------------- E-Mini NASDAQ 100 Societe Generale 15 3/17 $ 1,533,825 $ 16,625 E-Mini S&P 500 Morgan Stanley & Co. 21 3/17 2,388,225 10,004 E-Mini XAI Industrial Morgan Stanley & Co. (24) 3/17 (1,519,200) (2,122) Euro BUXL 30 Year Bond UBS AG (33) 3/17 (5,957,628) 19,587 Euro Stoxx 50 Morgan Stanley & Co. (141) 3/17 (4,923,595) (84,040) Euro-Bund UBS AG 65 3/17 11,378,891 13,377 Euro-Schatz UBS AG (218) 3/17 (26,416,136) (30,012) FTSE 100 Credit Suisse 17 3/17 1,506,391 (43,763) FTSE 250 Credit Suisse (34) 3/17 (1,549,346) 13,886 H-Shares Index UBS AG (59) 3/17 (3,740,184) (130,414) Japan 10 Year Bond UBS AG (5) 3/17 (6,643,324) 9,751 MINI DJIA Societe Generale (15) 3/17 (1,484,400) 1,053 Nikkei 225 (SGX) UBS AG 133 3/17 11,194,850 269,800 S&P/TSX 60 Morgan Stanley & Co. 12 3/17 1,672,049 20,067 Stoxx 600 AUTO Societe Generale 111 3/17 3,282,154 104,154 Stoxx Europe 600 Credit Suisse (174) 3/17 (3,368,625) (66,123) U.S. 5 Year Note UBS AG 296 3/17 34,888,688 (41,625) U.S. 10 Year Note UBS AG 49 3/17 6,098,969 (23,734) U.S. Ultra Bond UBS AG (46) 3/17 (7,391,625) 87,688 XAK Technology Morgan Stanley & Co. 31 3/17 1,553,100 27,842 MSCI World IX Societe Generale (29) 6/17 (1,439,560) (26,390) ----------------------------------------------------------------------------------------------------------- $ 11,063,519 $ 145,611 =========================================================================================================== J. Option Writing The Funds may write put and covered call options to seek to increase total return. When an option is written, the Funds receive a premium and become obligated to purchase or sell the underlying security at a fixed price upon the exercise of the option. When the Funds write an option, an amount equal to the premium received by the Funds is recorded as a liability and is subsequently adjusted to the current value of the option written. Premiums received from writing options that expire unexercised are treated by the Funds on the expiration date as realized gains from investments. The difference between the premium and the amount paid on effecting a closing purchase transaction, including brokerage commissions, is also treated as a realized gain or, if the premium is less than the amount paid for the closing Pioneer Solutions Funds | Semiannual Report | 1/31/17 79 purchase transaction, as a realized loss. If a call option is exercised, the premium is added to the proceeds from the sale of the underlying security in determining whether the Funds have realized a gain or loss. The Funds, as writer of an option, bear the market risk of an unfavorable change in the price of the security underlying the written option. Written call and put option contracts outstanding at period end are listed at the end of each Fund's Schedule of Investments. The average value of written option contracts open during the six months ended January 31, 2017 was as follows: ---------------------------------------------------------------------------- Conservative Balanced Growth Fund Fund Fund ---------------------------------------------------------------------------- $(29,294) $(87,147) $(251,507) Transactions in written options for the six months ended January 31, 2017 are summarized as follows: Pioneer Solutions - Conservative Fund --------------------------------------------------------------------------------------- Number of Premium Contracts Received --------------------------------------------------------------------------------------- Options open at beginning of period (12) $ (17,964) Options opened (1,400,644) (125,798) Options closed 483 105,945 Options expired 173 31,008 --------------------------------------------------------------------------------------- Options open at end of period (1,400,000) $ (6,809) Pioneer Solutions - Balanced Fund --------------------------------------------------------------------------------------- Number of Premium Contracts Received --------------------------------------------------------------------------------------- Options open at beginning of period (44) $ (65,867) Options opened (8,001,828) (376,662) Options closed 1,371 300,724 Options expired 501 102,894 --------------------------------------------------------------------------------------- Options open at end of period (8,000,000) $ (38,911) Pioneer Solutions - Growth Fund --------------------------------------------------------------------------------------- Number of Premium Contracts Received --------------------------------------------------------------------------------------- Options open at beginning of period (47) $ (195,892) Options opened (28,503,329) (1,314,775) Options closed 2,428 734,773 Options expired 779 63,116 --------------------------------------------------------------------------------------- Options open at end of period (28,500,169) $ (712,778) K. Purchased Options The Funds may purchase put and call options to seek increased total return. Purchased call and put options entitle the Funds to buy and sell a specified number of shares or units of a particular security, currency or index at a specified price at a specific date or within a specific period of time. Upon the 80 Pioneer Solutions Funds | Semiannual Report | 1/31/17 purchase of a call or put option, the premium paid by the Funds is included in the Statements of Assets and Liabilities as an investment. All premiums are marked-to-market daily, and any unrealized gains or losses are recorded in the Funds' financial statements. As the purchaser of an index option, the Funds have the right to receive a cash payment equal to any depreciation in the value of the index below the strike price of the option (in the case of a put) or equal to any appreciation in the value of the index over the strike price of the option (in the case of a call) as of the valuation date of the option. Premiums paid for purchased call and put options which have expired are treated as realized losses on investments in the Statements of Operations. Upon the exercise or closing of a purchased put option, the premium is offset against the proceeds on the sale of the underlying security or financial instrument in order to determine the realized gain or loss on investments. Upon the exercise or closing of a purchased call option, the premium is added to the cost of the security or financial instrument. The risk associated with purchasing options is limited to the premium originally paid. Purchased option contracts outstanding at period end are listed at the end of each Fund's Schedule of Investments. The average value of purchased options open during the six months ended January 31, 2017 was as follows: --------------------------------------------------------------------------- Conservative Balanced Growth Fund Fund Fund --------------------------------------------------------------------------- $17,845 $64,497 $762,449 L. Credit Default Swap Agreements A credit default swap is a contract between a buyer of protection and a seller of protection against a pre-defined credit event on an underlying reference obligation, which may be a single security or a basket or index of securities. The Funds may sell or buy credit default swap contracts to seek to increase the Funds' income, or to attempt to hedge the risk of default on Fund securities. A credit default swap index is used to hedge risk or take a position on a basket of credit entities or indices. As a seller of protection, the Funds 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 Funds. In return, the Funds would receive from the counterparty a periodic stream of payments during the term of the contract provided that no event of default occurred. The maximum exposure of loss to the seller would be the notional value of the credit default swaps outstanding. If no default occurs, the Funds would keep the stream of payments and would have no payment obligation. The Funds may also buy credit default swap contracts in order to hedge against the risk of default of debt securities, in which case the Funds would function as the counterparty referenced above. Pioneer Solutions Funds | Semiannual Report | 1/31/17 81 When the Funds enter into a credit default swap contract, the protection buyer makes an upfront or periodic payment to the protection seller in exchange for the rights to receive a contingent payment. An upfront payment made by the Funds, as the protection buyer, is recorded as an asset in the Statements of Assets and Liabilities. Periodic payments received or paid by the Funds are recorded as realized gains or losses in the Statements of Operations. Credit default swap contracts are marked-to-market daily using valuations supplied by independent sources and the change in value, if any, is recorded as unrealized appreciation or depreciation in the Statements of Assets and Liabilities. Payments received or made as a result of a credit event or upon termination of the contract are recognized, net of the appropriate amount of the upfront payment, as realized gains or losses in the Statements of Operations. Certain swap contracts that are cleared through a central clearinghouse are referred to as centrally cleared swaps. All payments made or received by the Funds are pursuant to a centrally cleared swap contract with the central clearing party rather than the original counterparty. Upon entering into a centrally cleared swap contract, the Funds are required to make an initial margin deposit, either in cash or in securities. The daily change in value on open centrally cleared contracts is recorded as variation margin on centrally cleared swaps on the Statements of Assets and Liabilities. Credit default swap contracts involving the sale of protection may involve greater risks than if the Funds 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 a Fund is a protection buyer and no credit event occurs, it will lose its investment. If a Fund is a protection seller and a credit event occurs, the value of the referenced debt instrument received by that Fund, together with the periodic payments received, may be less than the amount that Fund pays to the protection buyer, resulting in a loss to that Fund. There were no open credit default swap contracts at January 31, 2017. M. Inflation Rate Swap Contracts The Funds may enter into inflation rate swap contracts to attempt to hedge against inflation. Pursuant to the inflation rate swap agreement, the Funds negotiate with a counterparty to exchange a periodic stream of payments, based on a benchmark inflation index. One cash flow stream will typically be a floating rate payment linked to the specified inflation index while the other is typically a fixed interest rate. 82 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Inflation rate swap contracts are marked-to-market daily using valuations supplied by independent sources and the change in value, if any, is recorded as unrealized appreciation or depreciation in the Statements of Assets and Liabilities. Inflation rate swaps are normally issued on a zero coupon basis where all payments compound during the life of the contract and are netted upon the termination or maturity of the contract. Final payments received or paid by the Funds are recorded as realized gains or losses in the Statements of Operations. Inflation rate swap contracts are subject to movements in interest rates. There were no open inflation rate swap contracts at January 31, 2017. The average value of inflation rate swap contracts open during the six months ended January 31, 2017 was as follows: --------------------------------------------------------------------------- Conservative Balanced Growth Fund Fund Fund --------------------------------------------------------------------------- $(54,975) $(169,507) $(281,747) N. Interest Rate Swap Contracts The Funds may enter into interest rate swaps to attempt to hedge against interest rate fluctuations or to enhance their income. Pursuant to the interest rate swap agreement, the Funds negotiate with a counterparty to exchange a periodic stream of payments based on a benchmark interest rate. One cash flow stream will typically be a floating rate payment based upon the specified floating benchmark interest rate while the other is typically a fixed interest rate. Payment flows are usually netted against each other, with the difference being paid by one party to the other on a monthly basis. Periodic payments received or paid by the Funds are recorded as realized gains or losses in the Statements of Operations. Interest rate swap contracts are marked-to-market daily using valuations supplied by independent sources and the change in value, if any, is recorded as unrealized appreciation or depreciation in the Statements of Assets and Liabilities. Interest rate swap contracts are subject to counterparty risk and movements in interest rates. Open interest rate swap contracts at period end are listed at the end of each Fund's Schedule of Investments. The average value of interest rate swap contracts open during the six months ended January 31, 2017 was as follows: --------------------------------------------------------------------------- Conservative Balanced Growth Fund Fund Fund --------------------------------------------------------------------------- $3,023 $9,208 $ 17,116 The amount of cash deposited with the broker as collateral at January 31, 2017, and is included in "Restricted Cash" in the Statement of Assets and Liabilities, was as follows: --------------------------------------------------------------------------- Conservative Balanced Growth Fund Fund Fund --------------------------------------------------------------------------- $75,000 $145,000 $200,000 Pioneer Solutions Funds | Semiannual Report | 1/31/17 83 2. Management Agreement PIM manages the Funds' portfolios. Management fees for each Fund are calculated daily at an annual rate equal to 0.13% of the fund's average daily net assets up to $2.5 billion; 0.11% of the fund's average daily net assets over $2.5 billion up to $4 billion; 0.10% of the fund's average daily net assets over $4 billion up to $5.5 billion; and 0.08% of the fund's average daily net assets over $5.5 billion. For the six months ended January 31, 2017, the effective management fee for each Fund was equivalent to 0.13% of the Fund's average daily net assets. Fees waived and expenses reimbursed during the six months ended January 31, 2017 are reflected in the Statements of Operations. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Funds as administrative reimbursements. Included in "Due to affiliates" reflected on the Statements of Assets and Liabilities are the following amounts payable to PIM at January 31, 2017: -------------------------------------------------------------------------------- Fund Amount -------------------------------------------------------------------------------- Conservative Fund $ 7,593 Balanced Fund 21,268 Growth Fund 33,376 PIM has contractually agreed to limit ordinary operating expenses to the extent required to reduce fund expenses, other than underlying fund fees and expenses, as follows. These expense limitations are in effect through December 1, 2018. There can be no assurance that PIM will extend the expense limitation agreement for a class of shares beyond the date referred to above: -------------------------------------------------------------------------------- Fund Class A Class C Class R Class Y -------------------------------------------------------------------------------- Conservative Fund 0.70% 1.45% 0.90% 0.65% Balanced Fund 0.70% 1.45% 0.90% -- Growth Fund 0.70% 1.45% 0.90% -- 3. Transfer Agent Boston Financial Data Services serves as the transfer agent to the Funds at negotiated rates. Transfer agent fees and payables shown on the Statement of Operations and the Statement of Assets and Liabilities, respectively, include sub-transfer agent expenses incurred through the Fund's omnibus relationship contracts. In addition, the Funds reimburses the transfer agent for out-of-pocket expenses incurred by the transfer agent related to shareholder communications activities, such as proxy and statement mailings, outgoing phone calls. For the six months ended January 31, 2017, such out-of-pocket expenses by class of shares were as follows: 84 Pioneer Solutions Funds | Semiannual Report | 1/31/17 -------------------------------------------------------------------------------- Conservative Balanced Growth Shareholder Communications Fund Fund Fund -------------------------------------------------------------------------------- Class A $5,285 $17,375 $43,575 Class C 1,296 5,287 8,557 Class R 11 11 10 Class Y 29 302 230 -------------------------------------------------------------------------------- Total $6,621 $22,975 $52,372 ================================================================================ 4. Distribution Plan The Funds have adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to Class A and Class C shares. Pursuant to the Plan, each Fund pays PFD 0.25% of the Fund's average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with respect to Class A shares. Pursuant to the Plan, each Fund also pays PFD 1.00% of the average daily net assets attributable to Class C shares. The fee for Class C shares consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class C shares. Included in "Due to affiliates" reflected on the Statements of Assets and Liabilities are the following amounts in distribution fees payable to PFD at January 31, 2017: -------------------------------------------------------------------------------- Amount -------------------------------------------------------------------------------- Conservative Fund $ 24,242 Balanced Fund 75,669 Growth Fund 117,231 The Funds also have adopted a separate service plan for Class R shares (Service Plan). The Service Plan authorizes the Funds to pay securities dealers, plan administrators or other service organizations that agree to provide certain services to retirement plans or plan participants holding shares of the Funds a distribution fee of up to 0.50% of the Fund's average daily net assets attributable to Class R shares held by such plans. In addition, redemptions of each class of shares (except Class Y shares) may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within 12 months of purchase. Redemptions of Class C shares within one year of purchase are subject to a CDSC of 1.00% based on the lower of cost or market value of shares being redeemed. Shares purchased as part of an exchange remain subject to any CDSC that applied to the original purchase of those shares. There is no CDSC for Class Y shares. Proceeds from the CDSCs are paid to PFD. Pioneer Solutions Funds | Semiannual Report | 1/31/17 85 For the six months ended January 31, 2017, the following CDSCs were paid to PFD: -------------------------------------------------------------------------------- Fund Amount -------------------------------------------------------------------------------- Conservative Fund $ 784 Balanced Fund 1,515 Growth Fund 4,682 5. Forward Foreign Currency Contracts During the six months ended January 31, 2017, the Funds had entered into various forward foreign currency contracts that obligate the Funds 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 Funds may close out such contract by entering into an offsetting contract. The average value of contracts open during the six months ended January 31, 2017, were as follows: -------------------------------------------------------------------------------- Conservative Balanced Growth Fund Fund Fund -------------------------------------------------------------------------------- $(2,500,210) $(12,862,295) $(15,516,043) Open forward foreign currency contracts at January 31, 2017, were as follows: Pioneer Solutions - Conservative Fund -------------------------------------------------------------------------------------------------- In Currency Currency Exchange Settlement Unrealized Sold Deliver Purchased for Counterparty Date Appreciation -------------------------------------------------------------------------------------------------- CAD 19,640 EUR 14,033 Barclays Bank 4/12/17 $ 326 CAD 940,000 NOK 6,092,839 Barclays Bank 4/12/17 25,830 CAD 200,000 NOK 1,292,780 Goldman Sachs 4/12/17 4,294 International EUR 340,000 CZK 9,077,320 Goldman Sachs 10/24/17 14,142 International HUF 27,755,739 EUR 90,000 Barclays Bank 4/12/17 2,089 ILS 368,019 EUR 90,000 Barclays Bank 4/12/17 2,089 KRW 106,148,000 EUR 85,000 Barclays Bank 4/12/17 1,973 PLN 395,402 EUR 90,000 Barclays Bank 4/12/17 2,089 USD 98,284 EUR 91,504 Barclays Bank 4/12/17 833 USD 310,000 INR 21,272,200 Barclays Bank 4/12/17 2,139 USD 620,000 INR 42,516,500 Goldman Sachs 4/12/17 3,869 International USD 2,865 ZAR 39,219 Goldman Sachs 4/12/17 3 International ZAR 3,026,465 TRY 810,000 Goldman Sachs 4/12/17 1,019 International -------------------------------------------------------------------------------------------------- Total $ 60,695 ================================================================================================== 86 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ------------------------------------------------------------------------------------------------- In Currency Currency Exchange Settlement Unrealized Sold Deliver Purchased for Counterparty Date Depreciation ------------------------------------------------------------------------------------------------- AUD 935,000 USD 703,424 Goldman Sachs 4/12/17 $ (4,492) International CAD 19,640 EUR 14,033 Barclays Bank 4/12/17 (215) CAD 940,000 NOK 6,092,839 Barclays Bank 4/12/17 (8,386) CAD 200,000 NOK 1,292,780 Goldman Sachs 4/12/17 (1,016) CAD 594,242 USD 450,000 International Barclays Bank 4/12/17 (6,582) CAD 313,067 USD 240,000 Goldman Sachs 4/12/17 (543) International EUR 340,000 CZK 9,077,320 Goldman Sachs 10/24/17 (15,085) International EUR 448,987 USD 478,122 Goldman Sachs 4/12/17 (8,225) International GBP 440,000 USD 545,313 Goldman Sachs 4/12/17 (8,987) International HUF 27,755,739 EUR 90,000 Barclays Bank 4/12/17 (1,437) HUF 28,274,635 USD 98,386 Barclays Bank 4/12/17 (262) ILS 368,019 EUR 90,000 Barclays Bank 4/12/17 (2,375) ILS 378,500 USD 99,343 Barclays Bank 4/12/17 (1,216) JPY 80,506,639 USD 713,362 Goldman Sachs 4/12/17 (2,307) International KRW 106,148,000 EUR 85,000 Barclays Bank 4/12/17 (2,275) KRW 105,129,000 USD 90,000 Goldman Sachs 4/12/17 (1,488) International PLN 395,402 EUR 90,000 Barclays Bank 4/12/17 (3,263) PLN 377,295 USD 92,282 Barclays Bank 4/12/17 (1,863) ZAR 3,026,465 TRY 810,000 Goldman Sachs 4/12/17 (11,817) International ------------------------------------------------------------------------------------------------- Total $(81,834) ================================================================================================= AUD Australian Dollar CAD Canadian Dollar CZK Czech Koruna EUR Euro GBP Great British Pound HUF Hungarian Forint ILS Israeli New Shekel INR Indian Rupee JPY Japanese Yen KRW Korean Won NOK Norwegian Krone PLN Polish Zloty TRY Turkish Lira ZAR South African Rand Pioneer Solutions Funds | Semiannual Report | 1/31/17 87 Pioneer Solutions - Balanced Fund ------------------------------------------------------------------------------------------------- In Currency Currency Exchange Settlement Unrealized Sold Deliver Purchased for Counterparty Date Appreciation ------------------------------------------------------------------------------------------------- CAD 2,670,000 NOK 17,306,256 Barclays Bank 4/12/17 $ 73,372 CAD 570,000 NOK 3,684,423 Goldman Sachs 4/12/17 12,239 International EUR 980,000 CZK 26,164,040 Goldman Sachs 10/24/17 40,760 International HUF 86,351,188 EUR 280,000 Barclays Bank 4/12/17 6,499 ILS 1,144,948 EUR 280,000 Barclays Bank 4/12/17 6,499 KRW 312,200,000 EUR 250,000 Barclays Bank 4/12/17 5,802 PLN 1,230,140 EUR 280,000 Barclays Bank 4/12/17 6,498 USD 870,000 INR 59,699,400 Barclays Bank 4/12/17 6,003 USD 1,740,000 INR 119,320,500 Goldman Sachs 4/12/17 10,857 International USD 8,480 ZAR 116,088 Goldman Sachs 4/12/17 9 International ZAR 8,631,031 TRY 2,310,000 Goldman Sachs 4/12/17 2,907 International ------------------------------------------------------------------------------------------------- Total $ 171,445 ================================================================================================= 88 Pioneer Solutions Funds | Semiannual Report | 1/31/17 -------------------------------------------------------------------------------------------------- In Currency Currency Exchange Settlement Unrealized Sold Deliver Purchased for Counterparty Date Depreciation -------------------------------------------------------------------------------------------------- AUD 2,835,000 USD 2,132,841 Goldman Sachs 4/12/17 $ (13,621) International CAD 2,670,000 NOK 17,306,256 Barclays Bank 4/12/17 (23,820) CAD 570,000 NOK 3,684,423 Goldman Sachs 4/12/17 (2,895) International CAD 1,703,494 USD 1,290,000 Barclays Bank 4/12/17 (18,869) CAD 913,112 USD 700,000 Goldman Sachs 4/12/17 (1,583) International EUR 980,000 CZK 26,164,040 Goldman Sachs 10/24/17 (43,480) International EUR 5,003,362 USD 5,372,896 Goldman Sachs 4/12/17 (46,791) International GBP 1,265,000 USD 1,567,884 Goldman Sachs 4/12/17 (25,728) International HUF 86,351,188 EUR 280,000 Barclays Bank 4/12/17 (4,470) HUF 84,823,905 USD 295,157 Barclays Bank 4/12/17 (785) ILS 1,144,948 EUR 280,000 Barclays Bank 4/12/17 (7,387) ILS 1,135,500 USD 298,030 Barclays Bank 4/12/17 (3,648) JPY 283,139,240 USD 2,508,870 Goldman Sachs 4/12/17 (8,114) International KRW 312,200,000 EUR 250,000 Barclays Bank 4/12/17 (6,692) KRW 315,387,000 USD 270,000 Goldman Sachs 4/12/17 (4,466) International PLN 1,230,140 EUR 280,000 Barclays Bank 4/12/17 (10,152) PLN 1,131,885 USD 276,845 Barclays Bank 4/12/17 (5,590) ZAR 8,631,031 TRY 2,310,000 Goldman Sachs 4/12/17 (33,701) International -------------------------------------------------------------------------------------------------- Total $ (261,792) ================================================================================================== AUD Australian Dollar CAD Canadian Dollar CZK Czech Koruna EUR Euro GBP Great British Pound HUF Hungarian Forint ILS Israeli New Shekel INR Indian Rupee JPY Japanese Yen KRW Korean Won NOK Norwegian Krone PLN Polish Zloty TRY Turkish Lira ZAR South African Rand Pioneer Solutions Funds | Semiannual Report | 1/31/17 89 Pioneer Solutions - Growth Fund -------------------------------------------------------------------------------------------------- In Currency Currency Exchange Settlement Unrealized Sold Deliver Purchased for Counterparty Date Appreciation -------------------------------------------------------------------------------------------------- CAD 98,038 EUR 70,048 Barclays Bank 4/12/17 $ 1,626 CAD 4,630,000 NOK 30,010,475 Barclays Bank 4/12/17 127,234 CAD 1,010,000 NOK 6,528,539 Goldman Sachs 4/12/17 21,686 International EUR 1,740,000 CZK 46,454,520 Goldman Sachs 10/24/17 72,369 International HUF 141,862,666 EUR 460,000 Barclays Bank 4/12/17 10,676 ILS 1,880,986 EUR 460,000 Barclays Bank 4/12/17 10,676 KRW 549,472,000 EUR 440,000 Barclays Bank 4/12/17 10,212 PLN 2,020,945 EUR 460,000 Barclays Bank 4/12/17 10,676 USD 1,530,000 INR 104,988,600 Barclays Bank 4/12/17 10,557 USD 3,060,000 INR 209,839,500 Goldman Sachs 4/12/17 19,094 International USD 1,461,471 JPY 164,515,781 Barclays Bank 4/12/17 1,002 USD 14,554 ZAR 199,231 Goldman Sachs 4/12/17 16 International ZAR 15,244,418 TRY 4,080,000 Goldman Sachs 4/12/17 11,099 International -------------------------------------------------------------------------------------------------- Total $ 306,923 ================================================================================================== 90 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ------------------------------------------------------------------------------------------------- In Currency Currency Exchange Settlement Unrealized Sold Deliver Purchased for Counterparty Date Depreciation ------------------------------------------------------------------------------------------------- AUD 4,785,000 USD 3,599,875 Goldman Sachs 4/12/17 $ (22,990) International CAD 98,038 EUR 70,048 Barclays Bank 4/12/17 (1,076) CAD 4,630,000 NOK 30,010,475 Barclays Bank 4/12/17 (41,305) CAD 1,010,000 NOK 6,528,539 Goldman Sachs 4/12/17 (5,129) International CAD 3,010,826 USD 2,280,000 Barclays Bank 4/12/17 (33,349) CAD 1,591,423 USD 1,220,000 Goldman Sachs 4/12/17 (2,760) International EUR 1,740,000 CZK 46,454,520 Goldman Sachs 10/24/17 (77,199) International EUR 5,798,672 USD 6,226,945 Goldman Sachs 4/12/17 (54,228) International GBP 2,215,000 USD 2,745,424 Goldman Sachs 4/12/17 (44,972) International HUF 141,862,666 EUR 460,000 Barclays Bank 4/12/17 (7,343) HUF 141,373,175 USD 491,928 Barclays Bank 4/12/17 (1,308) ILS 1,880,986 EUR 460,000 Barclays Bank 4/12/17 (12,137) ILS 1,892,500 USD 496,716 Barclays Bank 4/12/17 (6,080) KRW 549,472,000 EUR 440,000 Barclays Bank 4/12/17 (11,778) KRW 537,326,000 USD 460,000 Goldman Sachs 4/12/17 (7,608) International PLN 2,020,945 EUR 460,000 Barclays Bank 4/12/17 (16,679) PLN 1,886,475 USD 461,408 Barclays Bank 4/12/17 (9,317) ZAR 15,244,418 TRY 4,080,000 Goldman Sachs 4/12/17 (65,490) International ------------------------------------------------------------------------------------------------- Total $(420,748) ================================================================================================= AUD Australian Dollar CAD Canadian Dollar CZK Czech Koruna EUR Euro GBP British Pound HUF Hungarian Forint ILS Israeli New Shekel INR Indian Rupee JPY Japanese Yen KRW Korean Won NOK Norwegian Krone PLN Polish Zloty TRY Turkish Lira ZAR South African Rand Pioneer Solutions Funds | Semiannual Report | 1/31/17 91 6. Assets and Liabilities Offsetting The Funds have entered into an International Swaps and Derivatives Association, Inc. Master Agreement ("ISDA Master Agreement") or similar agreement with substantially all their derivative counterparties. An ISDA Master Agreement is a bilateral agreement between the Funds and a counterparty that governs the trading of certain OTC derivatives and typically contains, among other things, close-out and set-off provisions which apply upon the occurrence of event of a default and/or termination event as defined under the relevant ISDA Master Agreement. The ISDA Master Agreement may also give a party the right to terminate all transactions traded under such agreement if, among other things, there is deterioration in the credit quality of the other party. Upon an event of default or a termination of the ISDA Master Agreement, the non-defaulting party has the right to close out all transactions under such agreement and to net amounts owed under each transaction to determine one net amount payable by one party to the other. The right to close out and net payments across all transactions under the ISDA Master Agreement could result in a reduction of the Funds' credit risk to their counterparty equal to any amounts payable by the Funds under the applicable transactions, if any. However, the Funds' right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific ISDA counterparty is subject. The collateral requirements for derivatives transactions under an ISDA Master Agreement are governed by a credit support annex to the ISDA Master Agreement. Collateral requirements are generally determined at the close of business each day and are typically based on changes in market values for each transaction under an ISDA Master Agreement and netted into one amount for such agreement. Generally, the amount of collateral due from or to a counterparty is subject to threshold (a "minimum transfer amount") before a transfer is required, which may vary by counterparty. Collaterals pledged for the benefit of the Funds and/or counterparty are held in segregated accounts by the Funds' custodian and cannot be sold, re-pledged, assigned or otherwise used while pledged. Cash that has been segregated to cover the Funds' collateral obligations, if any, will be reported separately in the Statements of Assets and Liabilities as "Restricted Cash." Securities pledged by the Funds as collateral, if any, are identified as such in the Schedules of Investments. 92 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Financial instruments subject to an enforceable master netting agreement such as an ISDA Master Agreement have been offset on the Statements of Assets and Liabilities. The following charts show gross assets and liabilities of the Funds as of January 31, 2017. Pioneer Solutions - Conservative Fund ------------------------------------------------------------------------------------------- Derivative Assets Subject to Derivatives Non-Cash Cash Net Amount Master Netting Available Collateral Collateral of Derivative Counterparty Agreement for Offset Received (a) Received (a) Assets (b) ------------------------------------------------------------------------------------------- Barclays Bank $ 37,368 $ (27,874) $ -- $ -- $ 9,494 Goldman Sachs International 23,327 (23,327) -- -- -- ------------------------------------------------------------------------------------------- Total $ 60,695 $ (51,201) $ -- $ -- $ 9,494 ============================================================================================ ------------------------------------------------------------------------------------------- Derivative Liabilities Subject to Derivatives Non-Cash Cash Net Amount Master Netting Available Collateral Collateral of Derivative Counterparty Agreement for Offset Pledged (a) Pledged (a) Liabilities (c) ------------------------------------------------------------------------------------------- Barclays Bank $ 27,874 $ (27,874) $ -- $ -- $ -- Deutsche Bank 3,846 -- -- (3,846) -- Goldman Sachs International 53,960 (23,327) -- -- 30,633 ------------------------------------------------------------------------------------------- Total $ 85,680 $ (51,201) $ -- $ (3,846) $ 30,633 =========================================================================================== Pioneer Solutions - Balanced Fund ------------------------------------------------------------------------------------------- Derivative Assets Subject to Derivatives Non-Cash Cash Net Amount Master Netting Available Collateral Collateral of Derivative Counterparty Agreement for Offset Received (a) Received (a) Assets (b) ------------------------------------------------------------------------------------------- Barclays Bank $104,673 $ (81,413) $ -- $ -- $ 23,260 Goldman Sachs International 66,772 (66,772) -- -- -- ------------------------------------------------------------------------------------------- Total $171,445 $(148,185) $ -- $ -- $ 23,260 =========================================================================================== -------------------------------------------------------------------------------------------- Derivative Liabilities Subject to Derivatives Non-Cash Cash Net Amount Master Netting Available Collateral Collateral of Derivative Counterparty Agreement for Offset Pledged (a) Pledged (a) Liabilities (c) -------------------------------------------------------------------------------------------- Barclays Bank $ 81,413 $ (81,413) $ -- $ -- $ -- Deutsche Bank 11,553 -- -- (11,553) -- Goldman Sachs International 180,379 (66,772) -- -- 113,607 -------------------------------------------------------------------------------------------- Total $273,345 $(148,185) $ -- $ (11,553) $113,607 ============================================================================================ Pioneer Solutions Funds | Semiannual Report | 1/31/17 93 Pioneer Solutions - Growth Fund --------------------------------------------------------------------------------------------- Derivative Assets Subject to Derivatives Non-Cash Cash Net Amount Master Netting Available Collateral Collateral of Derivative Counterparty Agreement for Offset Received (a) Received (a) Assets (b) --------------------------------------------------------------------------------------------- Barclays Bank $182,659 $(140,372) $ -- $ -- $ 42,287 Goldman Sachs International 124,264 (124,264) -- -- -- --------------------------------------------------------------------------------------------- Total $306,923 $(264,636) $ -- $ -- $ 42,287 ============================================================================================= --------------------------------------------------------------------------------------------- Derivative Liabilities Subject to Derivatives Non-Cash Cash Net Amount Master Netting Available Collateral Collateral of Derivative Counterparty Agreement for Offset Pledged (a) Pledged (a) Liabilities (c) --------------------------------------------------------------------------------------------- Barclays Bank $140,372 $(140,372) $ -- $ -- $ -- Deutsche Bank 21,189 -- -- (21,189) -- Goldman Sachs International 280,376 (124,264) -- -- 156,112 --------------------------------------------------------------------------------------------- Total $441,937 $(264,636) $ -- $ (21,189) $156,112 ============================================================================================== (a) The amount presented here may be less than the total amount of collateral received/pledged as the net amount of derivative assets and liabilities cannot be less than $0. (b) Represents the net amount due from the counterparty in the event of default. (c) Represents the net amount payable to the counterparty in the event of default. 7. Additional Disclosures about Derivative Instruments and Hedging Activities The Funds' use of derivatives subjects them to the following risks: Interest rate risk relates to the fluctuations in the value of interest-bearing securities due to changes in the prevailing levels of market interest rates. Credit risk relates to the ability of the issuer of a financial instrument to make further principal or interest payments on an obligation or commitment that it has to the Funds. Foreign exchange rate risk relates to fluctuations in the value of an asset or liability due to changes in currency exchange rates. Equity risk relates to the fluctuations in the value of financial instruments as a result of changes in market prices (other than those arising from interest rate risk or foreign exchange risk), whether caused by factors specific to an individual investment, its issuer, or all factors affecting all instruments traded in a market or market segment. 94 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Commodity risk relates to the risk that the value of a commodity or commodity index will fluctuate based on increases or decreases in the commodities market and factors specific to a particular industry or commodity. The fair value of open derivative instruments (not considered to be hedging instruments for accounting disclosure purposes) by risk exposure at January 31, 2017 was as follows: Pioneer Solutions - Conservative Fund Statement of Assets and Liabilities ----------------------------------------------------------------------------------------------- Foreign Interest Credit Exchange Equity Commodity Rate Risk Risk Risk Risk Risk ----------------------------------------------------------------------------------------------- Assets: Unrealized appreciation on futures contracts* $ 27,975 $ -- $ -- $ 59,580 $ -- Unrealized appreciation on centrally cleared interest rate swap agreements 2,549 -- -- -- -- Unrealized appreciation on forward foreign currency contracts -- -- 60,695 -- -- ----------------------------------------------------------------------------------------------- Total Value $ 30,524 $ -- $ 60,695 $ 59,580 $ -- =============================================================================================== Liabilities: Unrealized depreciation on futures contracts* $ (24,666) $ -- $ -- $ (64,353) $ -- Unrealized depreciation on centrally cleared interest rate swap agreements (3,874) -- -- -- -- Unrealized depreciation on interest rate swap agreement (3,846) -- -- -- -- Written options -- -- (9,578) -- -- Unrealized depreciation on forward foreign currency contracts -- -- (81,834) -- -- ----------------------------------------------------------------------------------------------- Total Value $ (32,386) $ -- $ (91,412) $ (64,353) $ -- =============================================================================================== * Reflects unrealized appreciation/depreciation on futures contracts (see Note 1I). The current day's variation margin is disclosed on the Statement of Assets and Liabilities. Pioneer Solutions Funds | Semiannual Report | 1/31/17 95 Pioneer Solutions - Balanced Fund Statement of Assets and Liabilities ----------------------------------------------------------------------------------------------- Foreign Interest Credit Exchange Equity Commodity Rate Risk Risk Risk Risk Risk ----------------------------------------------------------------------------------------------- Assets: Unrealized appreciation on futures contracts* $ 79,431 $ -- $ -- $ 164,890 $ -- Unrealized appreciation on centrally cleared interest rate swap agreements 6,953 -- -- -- -- Unrealized appreciation on forward foreign currency contracts -- -- 171,445 -- -- ----------------------------------------------------------------------------------------------- Total Value $ 86,384 $ -- $ 171,445 $ 164,890 $ -- =============================================================================================== Liabilities: Unrealized depreciation on futures contracts* $ (69,491) $ -- $ -- $ (259,654) $ -- Unrealized depreciation on centrally cleared interest rate swap agreements (11,718) -- -- -- -- Unrealized depreciation in interest rate swap agreement (11,553) -- -- -- -- Written options -- -- (54,731) -- -- Unrealized depreciation on forward foreign currency contracts -- -- (261,792) -- -- ----------------------------------------------------------------------------------------------- Total Value $ (92,762) $ -- $ (316,523) $ (259,654) $ -- =============================================================================================== * Reflects unrealized appreciation/depreciation on futures contracts (see Note 1I). The current day's variation margin is disclosed on the Statement of Assets and Liabilities. 96 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Pioneer Solutions - Growth Fund Statement of Assets and Liabilities ----------------------------------------------------------------------------------------------- Foreign Interest Credit Exchange Equity Commodity Rate Risk Risk Risk Risk Risk ----------------------------------------------------------------------------------------------- Assets: Unrealized appreciation on futures contracts* $ 130,403 $ -- $ -- $ 463,431 $ -- Unrealized appreciation on centrally cleared interest rate swap agreements 12,699 -- -- -- -- Unrealized appreciation on forward foreign currency contracts -- -- 306,923 -- -- ----------------------------------------------------------------------------------------------- Total Value $ 143,102 $ -- $ 306,923 $ 463,431 $ -- =============================================================================================== Liabilities: Unrealized depreciation on futures contracts* $ (95,371) $ -- $ -- $ (352,852) $ -- Unrealized depreciation on centrally cleared interest rate swap agreements (19,298) -- -- -- -- Unrealized depreciation on interest rate swap agreement (21,189) -- -- -- -- Written options -- -- (194,978) (522,210) -- Unrealized depreciation on forward foreign currency contracts -- -- (420,748) -- -- ----------------------------------------------------------------------------------------------- Total Value $(135,858) $ -- $ (615,726) $ (875,062) $ -- =============================================================================================== * Reflects unrealized appreciation/depreciation on futures contracts (see Note 1I). The current day's variation margin is disclosed on the Statement of Assets and Liabilities. Pioneer Solutions Funds | Semiannual Report | 1/31/17 97 The effect of derivative instruments (not considered to be hedging instruments for accounting disclosure purposes) on the Statement of Operations by risk exposure at January 31, 2017 was as follows: Pioneer Solutions - Conservative Fund Statement of Operations ----------------------------------------------------------------------------------------------- Foreign Interest Credit Exchange Equity Commodity Rate Risk Risk Risk Risk Risk ----------------------------------------------------------------------------------------------- Net realized gain (loss): Futures contracts $(513,434) $ -- $ -- $ (80,274) $ -- Swap contracts (127,837) (504) -- -- -- Written options -- -- (50) (45,028) -- Forward foreign currency contracts* -- -- 171,203 -- -- ----------------------------------------------------------------------------------------------- Total Value $(641,271) $ (504) $ 171,153 $ (125,302) $ -- =============================================================================================== Change in net unrealized appreciation (depreciation) on: Futures contracts $ (7,115) $ -- $ -- $ 172,712 $ -- Swap contracts 116,033 -- -- -- -- Written options -- -- (2,769) (17,544) -- Forward foreign currency contracts* -- -- 13,399 -- -- ----------------------------------------------------------------------------------------------- Total Value $ 108,918 $ -- $ 10,630 $ 155,168 $ -- =============================================================================================== * Included in the amount shown on the Statement of Operations as forward foreign currency contracts and other assets and liabilities denominated in foreign currencies. Pioneer Solutions - Balanced Fund Statement of Operations ----------------------------------------------------------------------------------------------- Foreign Interest Credit Exchange Equity Commodity Rate Risk Risk Risk Risk Risk ----------------------------------------------------------------------------------------------- Net realized gain (loss): Futures contracts $ (1,476,967) $ -- $ -- $ (757,266) $ -- Swap contracts (394,198) (397) -- -- -- Written options -- -- (288) (112,942) -- Forward foreign currency contracts* -- -- 807,250 -- -- ----------------------------------------------------------------------------------------------- Total Value $ (1,871,165) $ (397) $ 806,962 $ (870,208) $ -- =============================================================================================== Change in net unrealized appreciation (depreciation) on: Futures contracts $ (5,431) $ -- $ -- $ 449,406 $ -- Swap contracts 358,832 -- -- -- -- Written options -- -- (15,820) (64,327) -- Forward foreign currency contracts* -- -- 71,814 -- -- ----------------------------------------------------------------------------------------------- Total Value $ 353,401 $ -- $ 55,994 $ 385,079 $ -- =============================================================================================== * Included in the amount shown on the Statement of Operations as forward foreign currency contracts and other assets and liabilities denominated in foreign currencies. 98 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Pioneer Solutions - Growth Fund Statement of Operations ----------------------------------------------------------------------------------------------- Foreign Interest Credit Exchange Equity Commodity Rate Risk Risk Risk Risk Risk ----------------------------------------------------------------------------------------------- Net realized gain (loss): Futures contracts $ (1,028,328) $ -- $ -- $ 243,466 $ -- Swap contracts (655,213) (283) -- -- -- Written options -- -- (1,025) (148,326) -- Forward foreign currency contracts* -- -- 513,387 -- -- ----------------------------------------------------------------------------------------------- Total Value $ (1,683,541) $ (283) $ 512,362 $ 95,140 $ -- =============================================================================================== Change in net unrealized appreciation (depreciation) on: Futures contracts $ 360,506 $ -- $ -- $1,271,524 $ -- Swap contracts 588,848 -- -- -- -- Written options -- -- (56,356) (65,691) -- Forward foreign currency contracts* -- -- 157,645 -- -- ----------------------------------------------------------------------------------------------- Total Value $ 949,354 -- $ 101,289 $1,205,833 $ -- =============================================================================================== * Included in the amount shown on the Statement of Operations as forward foreign currency contracts and other assets and liabilities denominated in foreign currencies. 8. Transactions in Underlying Funds An affiliated issuer may be considered one in which a Fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, each Fund assumes the following to be affiliated issuers: Pioneer Solutions - Conservative Fund -------------------------------------------------------------------------------------------------- Beginning Acquisitions Dispositions Ending Underlying Funds (Affiliated) Shares Shares Shares Shares -------------------------------------------------------------------------------------------------- Pioneer Bond Fund Class K 1,689,767 6,502 -- 1,696,269 Pioneer Core Equity Fund Class Y -- 36,692 (4,003) 32,689 Pioneer Disciplined Value Fund Class Y -- 88,233 (9,622) 78,611 Pioneer Dynamic Credit Fund Class Y 289,182 -- (155,400) 133,782 Pioneer Equity Income Fund Class K 77,024 -- (77,024) -- Pioneer Floating Rate Fund Class K 102,850 -- (34,479) 68,371 Pioneer Fund Class Y -- 25,566 (2,785) 22,781 Pioneer Fundamental Growth Fund Class K 64,833 13,617 (47,260) 31,190 Pioneer Global Equity Fund Class K 165,382 -- -- 165,382 Pioneer Global High Yield Fund Class Y 23,959 -- -- 23,959 Pioneer Global Multisector Income Fund Class Y 108,596 -- (72,988) 35,608 Pioneer High Yield Fund Class Y 36,395 -- -- 36,395 Pioneer International Equity Fund Class Y 100,030 -- -- 100,030 Pioneer Long/Short Bond Fund Class Y 17,146 -- (17,146) -- Pioneer Mid Cap Value Fund Class K -- 66,127 (28,668) 37,459 Pioneer Opportunistic Long/Short Credit Fund Class Y 17,516 -- (17,516) -- Pioneer Real Estate Shares Class Y 42,184 -- (42,184) -- Pioneer Short Term Income Fund Class K 209,963 -- (144,329) 65,634 Pioneer Strategic Income Fund Class K 878,149 532,896 -- 1,411,045 Pioneer Solutions Funds | Semiannual Report | 1/31/17 99 ----------------------------------------------------------------------------------------------------- Realized Capital Gain Dividend Ending Underlying Funds (Affiliated) Gain (Loss) Distributions Income Value ----------------------------------------------------------------------------------------------------- Pioneer Bond Fund Class K $ -- $ -- $289,982 $ 16,318,108 Pioneer Core Equity Fund Class Y 713 -- 8,593 609,977 Pioneer Disciplined Value Fund Class Y 1,375 -- 16,427 1,220,829 Pioneer Dynamic Credit Fund Class Y (65,071) -- 66,804 1,254,875 Pioneer Equity Income Fund Class K (124,008) 284,603 15,405 -- Pioneer Floating Rate Fund Class K -- -- 14,167 464,923 Pioneer Fund Class Y 1,151 -- 2,042 680,013 Pioneer Fundamental Growth Fund Class K 22,756 27,631 4,142 612,883 Pioneer Global Equity Fund Class K -- -- 39,427 2,317,002 Pioneer Global High Yield Fund Class Y -- -- 6,203 207,008 Pioneer Global Multisector Income Fund Class Y (55,001) -- 15,603 372,100 Pioneer High Yield Fund Class Y -- -- 9,570 350,485 Pioneer International Equity Fund Class Y -- -- 25,048 2,039,619 Pioneer Long/Short Bond Fund Class Y (15,562) -- -- -- Pioneer Mid Cap Value Fund Class K 317 -- 11,747 933,478 Pioneer Opportunistic Long/Short Credit Fund Class Y (19,364) -- -- -- Pioneer Real Estate Shares Class Y 97,210 -- 3,252 -- Pioneer Short Term Income Fund Class K (4,330) -- 14,741 625,492 Pioneer Strategic Income Fund Class K -- -- 229,599 15,084,071 ---------- ------------- ---------- ------------ $(159,814) $ 312,234 $ 772,752 $ 43,090,863 ========== ============= ========== ============ Pioneer Solutions - Balanced Fund -------------------------------------------------------------------------------------------------- Beginning Acquisitions Dispositions Ending Underlying Funds (Affiliated) Shares Shares Shares Shares -------------------------------------------------------------------------------------------------- Pioneer Bond Fund Class K 1,881,011 107,449 (71,257) 1,917,203 Pioneer Core Equity Fund Class Y 462,331 9,343 (199,220) 272,454 Pioneer Disciplined Value Fund Class Y -- 645,082 -- 645,082 Pioneer Dynamic Credit Fund Class Y 623,412 -- (73,234) 550,178 Pioneer Fund Class Y 111,677 77,735 -- 189,412 Pioneer Fundamental Growth Fund Class K 464,327 -- (213,213) 251,114 Pioneer Global Equity Fund Class K 1,200,077 -- (73,681) 1,126,396 Pioneer Global High Yield Fund Class Y 356,705 -- -- 356,705 Pioneer Global Multisector Income Fund Class Y 337,381 -- (90,742) 246,639 Pioneer High Yield Fund Class Y 1 -- -- 1 Pioneer International Equity Fund Class Y 1,204,839 -- (16,691) 1,188,148 Pioneer Long/Short Bond Fund Class Y 136,314 -- (136,314) -- Pioneer Mid Cap Value Fund Class K 75,246 266,025 (42,197) 299,074 Pioneer Opportunistic Long/Short Credit Fund Class Y 140,030 -- (140,030) -- Pioneer Real Estate Shares Class Y 149,770 -- (149,770) -- Pioneer Select Mid Cap Growth Fund Class K 82,865 -- (82,865) -- Pioneer Strategic Income Fund Class K 968,450 287,506 -- 1,255,956 100 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ----------------------------------------------------------------------------------------------------- Realized Capital Gain Dividend Ending Underlying Funds (Affiliated) Gain (Loss) Distributions Income Value ----------------------------------------------------------------------------------------------------- Pioneer Bond Fund Class K $ (13,895) $ -- $ 328,059 $ 18,443,493 Pioneer Core Equity Fund Class Y 169,337 -- 66,830 5,083,991 Pioneer Disciplined Value Fund Class Y -- -- 127,974 10,018,123 Pioneer Dynamic Credit Fund Class Y (34,357) -- 212,677 5,160,673 Pioneer Fund Class Y -- 775,812 33,948 5,653,946 Pioneer Fundamental Growth Fund Class K 98,078 169,479 32,218 4,934,390 Pioneer Global Equity Fund Class K 36,465 -- 286,098 15,780,808 Pioneer Global High Yield Fund Class Y -- -- 92,348 3,081,931 Pioneer Global Multisector Income Fund Class Y (77,496) -- 54,376 2,577,377 Pioneer High Yield Fund Class Y -- -- -- 6 Pioneer International Equity Fund Class Y (32,727) -- 301,692 24,226,345 Pioneer Long/Short Bond Fund Class Y (123,719) -- -- -- Pioneer Mid Cap Value Fund Class K (68,359) 112,478 64,381 7,452,924 Pioneer Opportunistic Long/Short Credit Fund Class Y (154,803) -- -- -- Pioneer Real Estate Shares Class Y 1,967,243 58,270 22,543 -- Pioneer Select Mid Cap Growth Fund Class K (134,241) 49,247 -- -- Pioneer Strategic Income Fund Class K -- -- 242,538 13,426,170 ---------- ------------- ------------ ------------ $1,631,526 $ 1,165,286 $ 1,865,682 $115,840,177 ========== ============= ============ ============ Pioneer Solutions - Growth Fund -------------------------------------------------------------------------------------------------- Beginning Acquisitions Dispositions Ending Underlying Funds (Affiliated) Shares Shares Shares Shares -------------------------------------------------------------------------------------------------- Pioneer Bond Fund Class K 2,250,273 -- -- 2,250,273 Pioneer Core Equity Fund Class Y 1,247,982 21,258 (559,481) 709,759 Pioneer Disciplined Value Fund Class Y -- 1,708,557 -- 1,708,557 Pioneer Fund Class Y 485,961 15,428 (5,816) 495,573 Pioneer Fundamental Growth Fund Class K 1,179,883 20,251 (522,775) 677,359 Pioneer Global Equity Fund Class K 2,510,481 -- -- 2,510,481 Pioneer Global Multisector Income Fund Class Y 308,606 -- -- 308,606 Pioneer International Equity Fund Class Y 2,336,636 -- -- 2,336,636 Pioneer Long/Short Bond Fund Class Y 93,457 -- (93,457) -- Pioneer Mid Cap Value Fund Class K 559,470 419,563 (199,059) 779,974 Pioneer Opportunistic Long/Short Credit Fund Class Y 95,114 -- (95,114) -- Pioneer Real Estate Shares Class Y 363,171 -- (363,171) -- Pioneer Select Mid Cap Growth Fund Class K 234,082 -- (234,082) -- Pioneer Strategic Income Fund Class K 311,871 558,154 -- 870,025 Pioneer Solutions Funds | Semiannual Report | 1/31/17 101 ----------------------------------------------------------------------------------------------------- Realized Capital Gain Dividend Ending Underlying Funds (Affiliated) Gain (Loss) Distributions Income Value ----------------------------------------------------------------------------------------------------- Pioneer Bond Fund Class K $ -- $ -- $ 387,484 $ 21,647,626 Pioneer Core Equity Fund Class Y 582,898 -- 180,279 13,244,098 Pioneer Disciplined Value Fund Class Y -- -- 344,958 26,533,890 Pioneer Fund Class Y (58,411) 2,715,208 106,091 14,792,842 Pioneer Fundamental Growth Fund Class K 240,477 430,657 86,905 13,310,105 Pioneer Global Equity Fund Class K -- -- 593,802 35,171,839 Pioneer Global Multisector Income Fund Class Y -- -- 50,768 3,224,933 Pioneer International Equity Fund Class Y -- -- 585,094 47,644,016 Pioneer Long/Short Bond Fund Class Y (84,822) -- -- -- Pioneer Mid Cap Value Fund Class K (378,192) 687,574 169,399 19,436,952 Pioneer Opportunistic Long/Short Credit Fund Class Y (105,149) -- -- -- Pioneer Real Estate Shares Class Y 6,209,083 190,122 58,038 -- Pioneer Select Mid Cap Growth Fund Class K (379,213) 139,115 -- -- Pioneer Strategic Income Fund Class K -- -- 126,590 9,300,567 ---------- ------------- ------------ ------------ $6,026,671 $ 4,162,676 $ 2,689,408 $204,306,868 ========== ============= ============ ============ 102 Pioneer Solutions Funds | Semiannual Report | 1/31/17 ADDITIONAL INFORMATION (unaudited) Pioneer Investment Management, Inc. (the "Adviser"), the Fund's investment adviser, is currently an indirect, wholly owned subsidiary of UniCredit S.p.A. ("UniCredit"). On December 12, 2016, UniCredit announced that it has entered into a binding agreement for the sale of its Pioneer Investments business, which includes the Adviser, to Amundi (the "Transaction"). Amundi is headquartered in Paris, France, and, as of September 30, 2016, had more than $1.1 trillion in assets under management worldwide. The closing of the Transaction is expected to happen in 2017, subject to certain regulatory and antitrust approvals, and other conditions. Under the Investment Company Act of 1940, the closing of the Transaction will cause the Fund's current investment advisory agreement with the Adviser to terminate. Accordingly, the Fund's Board of Trustees will be asked to approve a new investment advisory agreement for the Fund. If approved by the Board, the Fund's new investment advisory agreement will be submitted to the shareholders of the Fund for their approval. Pioneer Solutions Funds | Semiannual Report | 1/31/17 103 Pioneer Solutions - Conservative Fund Approval of Investment Advisory Agreement Pioneer Investment Management, Inc. (PIM) serves as the investment adviser to Pioneer Solutions - Conservative 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 January 2016 as the Trustees of the Fund agreed on, among other things, an overall approach and timeline for the process. Contract review materials were provided to the Trustees in March 2016 and May 2016. In addition, the Trustees reviewed and discussed the Fund's performance at regularly scheduled meetings throughout the year, and took into account other information related to the Fund provided to the Trustees at regularly scheduled meetings, in connection with the review of the Fund's investment advisory agreement. In March 2016, the Trustees, among other things, discussed the memorandum provided by Fund counsel that summarized the legal standards and other considerations that are relevant to the Trustees in their deliberations regarding the renewal of the investment advisory agreement, and reviewed and discussed the qualifications of the investment management teams, as well as the level of investment by the Fund's portfolio managers in the Fund. In May 2016, the Trustees, among other things, reviewed the Fund's management fee and total expense ratios, the financial statements of PIM and its parent companies, the profitability analyses provided by PIM, and possible economies of scale. The Trustees also reviewed the profitability of the institutional business of PIM and PIM's affiliate, Pioneer Institutional Asset Management, Inc. (together with PIM, "Pioneer"), as compared to that of PIM's fund management business, and considered the differences between the fees and expenses of the Fund and the fees and expenses of Pioneer's institutional accounts, as well as the different services provided by PIM to the Fund and by Pioneer to the institutional accounts. The Trustees further considered contract review materials in July and September 2016. At a meeting held on September 13, 2016, 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 approving the renewal of the investment advisory agreement, the Trustees 104 Pioneer Solutions Funds | Semiannual Report | 1/31/17 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 in to account the investment objective and strategy of the Fund. The Trustees also reviewed PIM's investment approach for the Fund and its research process. The Trustees considered the resources of PIM and the personnel of PIM who provide investment management services to the Fund and would provide services following the implementation of investment strategy changes for the Fund. They also reviewed the amount of non-Fund assets managed by the portfolio managers of the Fund. The Trustees considered the non-investment resources and personnel of PIM involved in PIM's services to the Fund, including PIM's compliance and legal resources and personnel. The Trustees noted the substantial attention and high priority given by PIM's senior management to the Pioneer fund complex. The Trustees considered that PIM supervises and monitors the performance of the Fund's service providers and provides the Fund with personnel (including Fund officers) and other resources that are necessary for the Fund's business management and operations. 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 In considering the Fund's performance, the Trustees regularly review and discuss throughout the year data prepared by PIM and information comparing the Fund's performance with the performance of its peer group of funds as classified by each of Morningstar, Inc. (Morningstar) and Lipper, and with the performance of the Fund's benchmark index. They also discuss the Fund's performance with PIM on a regular basis. The Trustees' regular reviews and discussions were factored into the Trustees' deliberations concerning the renewal of the advisory agreement. Pioneer Solutions Funds | Semiannual Report | 1/31/17 105 Management Fee and Expenses The Trustees considered information showing the fees and expenses of the Fund in comparison to the management fees and expense ratios of its peer group of funds as classified by Morningstar and also to the expense ratios of a peer group of funds selected on the basis of criteria determined by the Independent Trustees for this purpose using data provided by Strategic Insight Mutual Fund Research and Consulting, LLC (Strategic Insight), an independent third party. In all quintile rankings referred to below, first quintile is most favorable to the Fund's shareowners. The Trustees considered that the Fund's management fee for the most recent fiscal year was in the third 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 considered that the expense ratio of the Fund's Class A shares for the most recent fiscal year was in the fifth quintile relative to its Morningstar peer group and in the fourth quintile relative to its Strategic Insight peer group, in each case for the comparable period. The Trustees considered that PIM had agreed to waive fees and/or reimburse expenses in order to limit the ordinary operating expenses of the Fund. The Trustees noted the Fund's relatively small asset size compared to most of the other funds in its peer groups, and that the Fund has not been able to take advantage of the economies of scale afforded by greater asset size. The Trustees considered the impact of transfer agency, sub-transfer agency, and other non-management fee expenses on the expense ratios of the Fund, and noted the impact of expenses relating to small accounts and omnibus accounts on transfer and sub-transfer agency expenses generally. The Trustees noted that they separately review the Fund's transfer agency, sub-transfer agency and intermediary arrangements and that the results of the most recent such review were considered in the consideration of the Fund's expense ratio. The Trustees considered that such non-management fee operating expenses generally are spread over a smaller asset base than the other funds in the peer group, which results in these fees being significantly higher as a percentage of assets. The Trustees also considered information showing significant expense reimbursements by the sponsors of the other funds in the peer groups. The Trustees reviewed management fees charged by Pioneer to institutional and other clients, including publicly offered European funds sponsored by affiliates of Pioneer, unaffiliated U.S. registered investment companies (in a sub-advisory capacity), and unaffiliated foreign and domestic separate accounts. The Trustees also considered PIM's costs in providing services to the Fund and Pioneer's costs in providing services to the other clients and considered the differences in management fees and profit margins for Fund and non-Fund services. In evaluating the fees associated with Pioneer's client accounts, the Trustees took into account the respective demands, resources 106 Pioneer Solutions Funds | Semiannual Report | 1/31/17 and complexity associated with the Fund and client accounts. The Trustees noted that, in some instances, the fee rates for those clients were lower than the management fee for the Fund and considered that, under the investment advisory agreement with the Fund, PIM performs additional services for the Fund that it does not provide to those other clients or services that are broader in scope, including oversight of the Fund's other service providers and activities related to compliance and the extensive regulatory and tax regimes to which the Fund is subject. The Trustees also considered the different entrepreneurial risks associated with PIM's management of the Fund and Pioneer's management of the other client accounts. The Trustees concluded that the management fee payable by the Fund to PIM was reasonable in relation to the nature and quality of the services provided by PIM to the Fund. Profitability The Trustees considered information provided by PIM regarding the profitability of PIM with respect to the advisory services provided by PIM to the Fund, including the methodology used by PIM in allocating certain of its costs to the management of the Fund. The Trustees also considered PIM's profit margin in connection with the overall operation of the Fund. They further reviewed the financial results, including the profit margins, realized by PIM and 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 noted the breakpoints in the management fee schedule. The Trustees recognize that economies of scale are difficult to identify and quantify, and that, among other factors that may be relevant, are the following: fee levels, expense subsidization, investment by PIM in research and analytical capabilities and PIM's commitment and resource allocation to the Fund. The Trustees noted that profitability also may be an indicator of the availability of any economies of scale, although profitability may vary for other reasons including due to reductions in expenses. The Trustees concluded that economies of scale, if any, were being appropriately shared with the Funds. Pioneer Solutions Funds | Semiannual Report | 1/31/17 107 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. Pioneer is the principal U.S. asset management business of Pioneer Global Asset Management, the worldwide asset management business of UniCredit Group, which manages over $150 billion in assets (including the Funds). Pioneer and the Funds receive reciprocal intangible benefits from the relationship, including mutual brand recognition and, for the Funds, direct and indirect access to the resources of a large global asset manager. The Trustees concluded that any such benefits received by Pioneer as a result of its relationship with the Funds were reasonable and their consideration of the advisory agreement between the Fund and PIM and the fees thereunder were unaffected by Pioneer's possible receipt of any such intangible benefits. 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. 108 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Pioneer Solutions - Balanced Fund Approval of Investment Advisory Agreement Pioneer Investment Management, Inc. (PIM) serves as the investment adviser to Pioneer Solutions - Balanced 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 January 2016 as the Trustees of the Fund agreed on, among other things, an overall approach and timeline for the process. Contract review materials were provided to the Trustees in March 2016 and May 2016. In addition, the Trustees reviewed and discussed the Fund's performance at regularly scheduled meetings throughout the year, and took into account other information related to the Fund provided to the Trustees at regularly scheduled meetings, in connection with the review of the Fund's investment advisory agreement. In March 2016, the Trustees, among other things, discussed the memorandum provided by Fund counsel that summarized the legal standards and other considerations that are relevant to the Trustees in their deliberations regarding the renewal of the investment advisory agreement, and reviewed and discussed the qualifications of the investment management teams, as well as the level of investment by the Fund's portfolio managers in the Fund. In May 2016, the Trustees, among other things, reviewed the Fund's management fee and total expense ratios, the financial statements of PIM and its parent companies, the profitability analyses provided by PIM, and possible economies of scale. The Trustees also reviewed the profitability of the institutional business of PIM and PIM's affiliate, Pioneer Institutional Asset Management, Inc. (together with PIM, "Pioneer"), as compared to that of PIM's fund management business, and considered the differences between the fees and expenses of the Fund and the fees and expenses of Pioneer's institutional accounts, as well as the different services provided by PIM to the Fund and by Pioneer to the institutional accounts. The Trustees further considered contract review materials in July and September 2016. At a meeting held on September 13, 2016, 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 approving 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. Pioneer Solutions Funds | Semiannual Report | 1/31/17 109 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 in to account the investment objective and strategy of the Fund. The Trustees also reviewed PIM's investment approach for the Fund and its research process. The Trustees considered the resources of PIM and the personnel of PIM who provide investment management services to the Fund and would provide services following the implementation of investment strategy changes for the Fund. They also reviewed the amount of non-Fund assets managed by the portfolio managers of the Fund. The Trustees considered the non-investment resources and personnel of PIM involved in PIM's services to the Fund, including PIM's compliance and legal resources and personnel. The Trustees noted the substantial attention and high priority given by PIM's senior management to the Pioneer fund complex. The Trustees considered that PIM supervises and monitors the performance of the Fund's service providers and provides the Fund with personnel (including Fund officers) and other resources that are necessary for the Fund's business management and operations. 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 In considering the Fund's performance, the Trustees regularly review and discuss throughout the year data prepared by PIM and information comparing the Fund's performance with the performance of its peer group of funds as classified by each of Morningstar, Inc. (Morningstar) and Lipper, and with the performance of the Fund's benchmark index. They also discuss the Fund's performance with PIM on a regular basis. The Trustees' regular reviews and discussions were factored into the Trustees' deliberations concerning the renewal of the advisory agreement. Management Fee and Expenses The Trustees considered information showing the fees and expenses of the Fund in comparison to the management fees and expense ratios of its peer group of funds as classified by Morningstar and also to the expense ratios of a peer group of funds selected on the basis of criteria determined by the Independent Trustees for this purpose using data provided by Strategic Insight 110 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Mutual Fund Research and Consulting, LLC (Strategic Insight), an independent third party. In all quintile rankings referred to below, first quintile is most favorable to the Fund's shareowners. The Trustees considered that the Fund's management fee for the most recent fiscal year was in the third 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 considered that the expense ratio of the Fund's Class A shares for the most recent fiscal year was in the fifth quintile relative to its Morningstar peer group and in the fourth quintile relative to its Strategic Insight peer group, in each case for the comparable period. The Trustees considered that PIM had agreed to waive fees and/or reimburse expenses in order to limit the ordinary operating expenses of the Fund. The Trustees noted the Fund's relatively small asset size compared to most of the other funds in its peer groups, and that the Fund has not been able to take advantage of the economies of scale afforded by greater asset size. The Trustees considered the impact of transfer agency, sub-transfer agency, and other non-management fee expenses on the expense ratios of the Fund, and noted the impact of expenses relating to small accounts and omnibus accounts on transfer and sub-transfer agency expenses generally. The Trustees noted that they separately review the Fund's transfer agency, sub-transfer agency and intermediary arrangements and that the results of the most recent such review were considered in the consideration of the Fund's expense ratio. The Trustees considered that such non-management fee operating expenses generally are spread over a smaller asset base than the other funds in the peer group, which results in these fees being significantly higher as a percentage of assets. The Trustees also considered information showing significant expense reimbursements by the sponsors of the other funds in the peer groups. The Trustees reviewed management fees charged by Pioneer to institutional and other clients, including publicly offered European funds sponsored by affiliates of Pioneer, unaffiliated U.S. registered investment companies (in a sub-advisory capacity), and unaffiliated foreign and domestic separate accounts. The Trustees also considered PIM's costs in providing services to the Fund and Pioneer's costs in providing services to the other clients and considered the differences in management fees and profit margins for Fund and non-Fund services. In evaluating the fees associated with Pioneer'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 Pioneer Solutions Funds | Semiannual Report | 1/31/17 111 in scope, including oversight of the Fund's other service providers and activities related to compliance and the extensive regulatory and tax regimes to which the Fund is subject. The Trustees also considered the different entrepreneurial risks associated with PIM's management of the Fund and Pioneer's management of the other client accounts. The Trustees concluded that the management fee payable by the Fund to PIM was reasonable in relation to the nature and quality of the services provided by PIM to the Fund. Profitability The Trustees considered information provided by PIM regarding the profitability of PIM with respect to the advisory services provided by PIM to the Fund, including the methodology used by PIM in allocating certain of its costs to the management of the Fund. The Trustees also considered PIM's profit margin in connection with the overall operation of the Fund. They further reviewed the financial results, including the profit margins, realized by PIM and 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 noted the breakpoints in the management fee schedule. The Trustees recognize that economies of scale are difficult to identify and quantify, and that, among other factors that may be relevant, are the following: fee levels, expense subsidization, investment by PIM in research and analytical capabilities and PIM's commitment and resource allocation to the Fund. The Trustees noted that profitability also may be an indicator of the availability of any economies of scale, although profitability may vary for other reasons including reductions in expenses. The Trustees concluded that economies of scale, if any, were being appropriately shared with the Funds. 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. 112 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Pioneer is the principal U.S. asset management business of Pioneer Global Asset Management, the worldwide asset management business of UniCredit Group, which manages over $150 billion in assets (including the Funds). Pioneer and the Funds receive reciprocal intangible benefits from the relationship, including mutual brand recognition and, for the Funds, direct and indirect access to the resources of a large global asset manager. The Trustees concluded that any such benefits received by Pioneer as a result of its relationship with the Funds were reasonable and their consideration of the advisory agreement between the Fund and PIM and the fees thereunder were unaffected by Pioneer's possible receipt of any such intangible benefits. 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 Solutions Funds | Semiannual Report | 1/31/17 113 Pioneer Solutions - Growth Fund Approval of Investment Advisory Agreement Pioneer Investment Management, Inc. (PIM) serves as the investment adviser to Pioneer Solutions - Growth 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 January 2016 as the Trustees of the Fund agreed on, among other things, an overall approach and timeline for the process. Contract review materials were provided to the Trustees in March 2016 and May 2016. In addition, the Trustees reviewed and discussed the Fund's performance at regularly scheduled meetings throughout the year, and took into account other information related to the Fund provided to the Trustees at regularly scheduled meetings, in connection with the review of the Fund's investment advisory agreement. In March 2016, the Trustees, among other things, discussed the memorandum provided by Fund counsel that summarized the legal standards and other considerations that are relevant to the Trustees in their deliberations regarding the renewal of the investment advisory agreement, and reviewed and discussed the qualifications of the investment management teams, as well as the level of investment by the Fund's portfolio managers in the Fund. In May 2016, the Trustees, among other things, reviewed the Fund's management fee and total expense ratios, the financial statements of PIM and its parent companies, the profitability analyses provided by PIM, and possible economies of scale. The Trustees also reviewed the profitability of the institutional business of PIM and PIM's affiliate, Pioneer Institutional Asset Management, Inc. (together with PIM, "Pioneer"), as compared to that of PIM's fund management business, and considered the differences between the fees and expenses of the Fund and the fees and expenses of Pioneer's institutional accounts, as well as the different services provided by PIM to the Fund and by Pioneer to the institutional accounts. The Trustees further considered contract review materials in July and September 2016. At a meeting held on September 13, 2016, 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 approving 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. 114 Pioneer Solutions Funds | Semiannual Report | 1/31/17 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 in to account the investment objective and strategy of the Fund. The Trustees also reviewed PIM's investment approach for the Fund and its research process. The Trustees considered the resources of PIM and the personnel of PIM who provide investment management services to the Fund and would provide services following the implementation of investment strategy changes for the Fund. They also reviewed the amount of non-Fund assets managed by the portfolio managers of the Fund. The Trustees considered the non-investment resources and personnel of PIM involved in PIM's services to the Fund, including PIM's compliance and legal resources and personnel. The Trustees noted the substantial attention and high priority given by PIM's senior management to the Pioneer fund complex. The Trustees considered that PIM supervises and monitors the performance of the Fund's service providers and provides the Fund with personnel (including Fund officers) and other resources that are necessary for the Fund's business management and operations. 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 In considering the Fund's performance, the Trustees regularly review and discuss throughout the year data prepared by PIM and information comparing the Fund's performance with the performance of its peer group of funds as classified by each of Morningstar, Inc. (Morningstar) and Lipper, and with the performance of the Fund's benchmark index. They also discuss the Fund's performance with PIM on a regular basis. The Trustees' regular reviews and discussions were factored into the Trustees' deliberations concerning the renewal of the advisory agreement. Management Fee and Expenses The Trustees considered information showing the fees and expenses of the Fund in comparison to the management fees and expense ratios of its peer group of funds as classified by Morningstar and also to the expense ratios of a peer group of funds selected on the basis of criteria determined by the Independent Trustees for this purpose using data provided by Strategic Insight Pioneer Solutions Funds | Semiannual Report | 1/31/17 115 Mutual Fund Research and Consulting, LLC (Strategic Insight), an independent third party. In all quintile rankings referred to below, first quintile is most favorable to the Fund's shareowners. The Trustees considered that the Fund's management fee for the most recent fiscal year was in the third 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 considered that the expense ratio of the Fund's Class A shares for the most recent fiscal year was in the fourth quintile relative to its Morningstar peer group and in the fourth quintile relative to its Strategic Insight peer group, in each case for the comparable period. The Trustees considered that PIM had agreed to waive fees and/or reimburse expenses in order to limit the ordinary operating expenses of the Fund. The Trustees noted the Fund's relatively small asset size compared to most of the other funds in its peer groups, and that the Fund has not been able to take advantage of the economies of scale afforded by greater asset size. The Trustees considered the impact of transfer agency, sub-transfer agency, and other non-management fee expenses on the expense ratios of the Fund, and noted the impact of expenses relating to small accounts and omnibus accounts on transfer and sub-transfer agency expenses generally. The Trustees noted that they separately review the Fund's transfer agency, sub-transfer agency and intermediary arrangements and that the results of the most recent such review were considered in the consideration of the Fund's expense ratio. The Trustees considered that such non-management fee operating expenses generally are spread over a smaller asset base than the other funds in the peer group, which results in these fees being significantly higher as a percentage of assets. The Trustees also considered information showing significant expense reimbursements by the sponsors of the other funds in the peer groups. The Trustees reviewed management fees charged by Pioneer to institutional and other clients, including publicly offered European funds sponsored by affiliates of Pioneer, unaffiliated U.S. registered investment companies (in a sub-advisory capacity), and unaffiliated foreign and domestic separate accounts. The Trustees also considered PIM's costs in providing services to the Fund and Pioneer's costs in providing services to the other clients and considered the differences in management fees and profit margins for Fund and non-Fund services. In evaluating the fees associated with Pioneer'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 116 Pioneer Solutions Funds | Semiannual Report | 1/31/17 activities related to compliance and the extensive regulatory and tax regimes to which the Fund is subject. The Trustees also considered the different entrepreneurial risks associated with PIM's management of the Fund and Pioneer's management of the other client accounts. The Trustees concluded that the management fee payable by the Fund to PIM was reasonable in relation to the nature and quality of the services provided by PIM to the Fund. Profitability The Trustees considered information provided by PIM regarding the profitability of PIM with respect to the advisory services provided by PIM to the Fund, including the methodology used by PIM in allocating certain of its costs to the management of the Fund. The Trustees also considered PIM's profit margin in connection with the overall operation of the Fund. They further reviewed the financial results, including the profit margins, realized by PIM and 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 noted the breakpoints in the management fee schedule. The Trustees recognize that economies of scale are difficult to identify and quantify, and that, among other factors that may be relevant, are the following: fee levels, expense subsidization, investment by PIM in research and analytical capabilities and PIM's commitment and resource allocation to the Fund. The Trustees noted that profitability also may be an indicator of the availability of any economies of scale, although profitability may vary for other reasons including reductions in expenses. The Trustees concluded that economies of scale, if any, were being appropriately shared with the Funds. 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. Pioneer is the principal U.S. asset management business of Pioneer Global Pioneer Solutions Funds | Semiannual Report | 1/31/17 117 Asset Management, the worldwide asset management business of UniCredit Group, which manages over $150 billion in assets (including the Funds). Pioneer and the Funds receive reciprocal intangible benefits from the relationship, including mutual brand recognition and, for the Funds, direct and indirect access to the resources of a large global asset manager. The Trustees concluded that any such benefits received by Pioneer as a result of its relationship with the Funds were reasonable and their consideration of the advisory agreement between the Fund and PIM and the fees thereunder were unaffected by Pioneer's possible receipt of any such intangible benefits. 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. 118 Pioneer Solutions Funds | Semiannual Report | 1/31/17 Trustees, Officers and Service Providers Trustees Advisory Trustee Thomas J. Perna, Chairman Lorraine H. Monchak* David R. Bock Benjamin M. Friedman Officers Margaret B.W. Graham Lisa M. Jones, President and Chief Marguerite A. Piret Executive Officer Fred J. Ricciardi Mark E. Bradley, Treasurer and Kenneth J. Taubes Chief Financial Officer Christopher J. Kelley, Secretary and Chief Legal Officer Investment Adviser and Administrator Pioneer Investment Management, Inc. Custodian and Sub-Administrator Brown Brothers Harriman & Co. Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Morgan, Lewis & Bockius LLP Shareowner Services and Transfer Agent Boston Financial Data Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at us.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at www.sec.gov. * Ms. Monchak is a non-voting Advisory Trustee. Pioneer Solutions Funds | Semiannual Report | 1/31/17 119 This page is for your notes. 120 Pioneer Solutions Funds | Semiannual Report | 1/31/17 This page is for your notes. Pioneer Solutions Funds | Semiannual Report | 1/31/17 121 This page is for your notes. 122 Pioneer Solutions Funds | Semiannual Report | 1/31/17 This page is for your notes. Pioneer Solutions Funds | Semiannual Report | 1/31/17 123 This page is for your notes. 124 Pioneer Solutions Funds | Semiannual Report | 1/31/17 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Write to us: -------------------------------------------------------------------------------- Pioneer Funds P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: us.pioneerinvestments.com This report must be preceded or accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. [LOGO] PIONEER Investments(R) Pioneer Investment Management, Inc. 60 State Street Boston, MA 02109 us.pioneerinvestments.com Securities offered through Pioneer Funds Distributor, Inc. 60 State Street, Boston, MA 02109 Underwriter of Pioneer Mutual Funds, Member SIPC (C) 2017 Pioneer Investments 19016-11-0317 ITEM 2. CODE OF ETHICS. (a) Disclose whether, as of the end of the period covered by the report, the registrant has adopted a code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party. If the registrant has not adopted such a code of ethics, explain why it has not done so. The registrant has adopted, as of the end of the period covered by this report, a code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer and controller. (b) For purposes of this Item, the term "code of ethics" means written standards that are reasonably designed to deter wrongdoing and to promote: (1) Honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships; (2) Full, fair, accurate, timely, and understandable disclosure in reports and documents that a registrant files with, or submits to, the Commission and in other public communications made by the registrant; (3) Compliance with applicable governmental laws, rules, and regulations; (4) The prompt internal reporting of violations of the code to an appropriate person or persons identified in the code; and (5) Accountability for adherence to the code. (c) The registrant must briefly describe the nature of any amendment, during the period covered by the report, to a provision of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item. The registrant must file a copy of any such amendment as an exhibit pursuant to Item 10(a), unless the registrant has elected to satisfy paragraph (f) of this Item by posting its code of ethics on its website pursuant to paragraph (f)(2) of this Item, or by undertaking to provide its code of ethics to any person without charge, upon request, pursuant to paragraph (f)(3) of this Item. The registrant has made no amendments to the code of ethics during the period covered by this report. (d) If the registrant has, during the period covered by the report, granted a waiver, including an implicit waiver, from a provision of the code of ethics to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, that relates to one or more of the items set forth in paragraph (b) of this Item, the registrant must briefly describe the nature of the waiver, the name of the person to whom the waiver was granted, and the date of the waiver. Not applicable. (e) If the registrant intends to satisfy the disclosure requirement under paragraph (c) or (d) of this Item regarding an amendment to, or a waiver from, a provision of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item by posting such information on its Internet website, disclose the registrant's Internet address and such intention. Not applicable. (f) The registrant must: (1) File with the Commission, pursuant to Item 12(a)(1), a copy of its code of ethics that applies to the registrant's principal executive officer,principal financial officer, principal accounting officer or controller, or persons performing similar functions, as an exhibit to its annual report on this Form N-CSR (see attachment); (2) Post the text of such code of ethics on its Internet website and disclose, in its most recent report on this Form N-CSR, its Internet address and the fact that it has posted such code of ethics on its Internet website; or (3) Undertake in its most recent report on this Form N-CSR to provide to any person without charge, upon request, a copy of such code of ethics and explain the manner in which such request may be made. 	See Item 10(2) ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT. (a) (1) Disclose that the registrant's board of trustees has determined that the registrant either: (i) Has at least one audit committee financial expert serving on its audit committee; or (ii) Does not have an audit committee financial expert serving on its audit committee. The registrant's Board of Trustees has determined that the registrant has at least one audit committee financial expert. (2) If the registrant provides the disclosure required by paragraph (a)(1)(i) of this Item, it must disclose the name of the audit committee financial expert and whether that person is "independent." In order to be considered "independent" for purposes of this Item, a member of an audit committee may not, other than in his or her capacity as a member of the audit committee, the board of trustees, or any other board committee: (i) Accept directly or indirectly any consulting, advisory, or other compensatory fee from the issuer; or (ii) Be an "interested person" of the investment company as defined in Section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19)). Ms. Marguerite A. Piret, an independent trustee, is such an audit committee financial expert. (3) If the registrant provides the disclosure required by paragraph (a)(1) (ii) of this Item, it must explain why it does not have an audit committee financial expert. Not applicable. ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES. (a) Disclose, under the caption AUDIT FEES, the aggregate fees billed for each of the last two fiscal years for professional services rendered by the principal accountant for the audit of the registrant's annual financial statements or services that are normally provided by the accountant in connection with statutory and regulatory filings or engagements for those fiscal years. N/A (b) Disclose, under the caption AUDIT-RELATED FEES, the aggregate fees billed in each of the last two fiscal years for assurance and related services by the principal accountant that are reasonably related to the performance of the audit of the registrant's financial statements and are not reported under paragraph (a) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A (c) Disclose, under the caption TAX FEES, the aggregate fees billed in each of the last two fiscal years for professional services rendered by the principal accountant for tax compliance, tax advice, and tax planning. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A (d) Disclose, under the caption ALL OTHER FEES, the aggregate fees billed in each of the last two fiscal years for products and services provided by the principal accountant, other than the services reported in paragraphs (a) through (c) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A (e) (1) Disclose the audit committee's pre-approval policies and procedures described in paragraph (c)(7) of Rule 2-01 of Regulation S-X. PIONEER FUNDS APPROVAL OF AUDIT, AUDIT-RELATED, TAX AND OTHER SERVICES PROVIDED BY THE INDEPENDENT AUDITOR SECTION I - POLICY PURPOSE AND APPLICABILITY The Pioneer Funds recognize the importance of maintaining the independence of their outside auditors. Maintaining independence is a shared responsibility involving Pioneer Investment Management, Inc ("PIM"), the audit committee and the independent auditors. The Funds recognize that a Fund's independent auditors: 1) possess knowledge of the Funds, 2) are able to incorporate certain services into the scope of the audit, thereby avoiding redundant work, cost and disruption of Fund personnel and processes, and 3) have expertise that has value to the Funds. As a result, there are situations where it is desirable to use the Fund's independent auditors for services in addition to the annual audit and where the potential for conflicts of interests are minimal. Consequently, this policy, which is intended to comply with Rule 210.2-01(C)(7), sets forth guidelines and procedures to be followed by the Funds when retaining the independent audit firm to perform audit, audit-related tax and other services under those circumstances, while also maintaining independence. Approval of a service in accordance with this policy for a Fund shall also constitute approval for any other Fund whose pre-approval is required pursuant to Rule 210.2-01(c)(7)(ii). In addition to the procedures set forth in this policy, any non-audit services that may be provided consistently with Rule 210.2-01 may be approved by the Audit Committee itself and any pre-approval that may be waived in accordance with Rule 210.2-01(c)(7)(i)(C) is hereby waived. Selection of a Fund's independent auditors and their compensation shall be determined by the Audit Committee and shall not be subject to this policy. SECTION II - POLICY ---------------- -------------------------------- ------------------------------------------------- SERVICE SERVICE CATEGORY DESCRIPTION SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES CATEGORY ---------------- -------------------------------- ------------------------------------------------- I. AUDIT Services that are directly o Accounting research assistance SERVICES related to performing the o SEC consultation, registration independent audit of the Funds statements, and reporting o Tax accrual related matters o Implementation of new accounting standards o Compliance letters (e.g. rating agency letters) o Regulatory reviews and assistance regarding financial matters o Semi-annual reviews (if requested) o Comfort letters for closed end offerings ---------------- -------------------------------- ------------------------------------------------- II. Services which are not o AICPA attest and agreed-upon procedures AUDIT-RELATED prohibited under Rule o Technology control assessments SERVICES 210.2-01(C)(4) (the "Rule") o Financial reporting control assessments and are related extensions of o Enterprise security architecture the audit services support the assessment audit, or use the knowledge/expertise gained from the audit procedures as a foundation to complete the project. In most cases, if the Audit-Related Services are not performed by the Audit firm, the scope of the Audit Services would likely increase. The Services are typically well-defined and governed by accounting professional standards (AICPA, SEC, etc.) ---------------- -------------------------------- ------------------------------------------------- ------------------------------------- ------------------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------- ------------------------------------ o "One-time" pre-approval o A summary of all such for the audit period for all services and related fees pre-approved specific service reported at each regularly subcategories. Approval of the scheduled Audit Committee independent auditors as meeting. auditors for a Fund shall constitute pre approval for these services. ------------------------------------- ------------------------------------ o "One-time" pre-approval o A summary of all such for the fund fiscal year within services and related fees a specified dollar limit (including comparison to for all pre-approved specified dollar limits) specific service subcategories reported quarterly. o Specific approval is needed to exceed the pre-approved dollar limit for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for Audit-Related Services not denoted as "pre-approved", or to add a specific service subcategory as "pre-approved" ------------------------------------- ------------------------------------ SECTION III - POLICY DETAIL, CONTINUED ----------------------- --------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES DESCRIPTION ----------------------- --------------------------- ----------------------------------------------- III. TAX SERVICES Services which are not o Tax planning and support prohibited by the Rule, o Tax controversy assistance if an officer of the Fund o Tax compliance, tax returns, excise determines that using the tax returns and support Fund's auditor to provide o Tax opinions these services creates significant synergy in the form of efficiency, minimized disruption, or the ability to maintain a desired level of confidentiality. ----------------------- --------------------------- ----------------------------------------------- ------------------------------------- ------------------------- AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------- ------------------------- ------------------------------------- ------------------------- o "One-time" pre-approval o A summary of for the fund fiscal year all such services and within a specified dollar limit related fees 				 (including comparison 			 to specified dollar 			 limits) reported 			 quarterly. o Specific approval is needed to exceed the pre-approved dollar limits for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for tax services not denoted as pre-approved, or to add a specific service subcategory as "pre-approved" ------------------------------------- ------------------------- SECTION III - POLICY DETAIL, CONTINUED ----------------------- --------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES DESCRIPTION ----------------------- --------------------------- ----------------------------------------------- IV. OTHER SERVICES Services which are not o Business Risk Management support prohibited by the Rule, o Other control and regulatory A. SYNERGISTIC, if an officer of the Fund compliance projects UNIQUE QUALIFICATIONS determines that using the Fund's auditor to provide these services creates significant synergy in the form of efficiency, minimized disruption, the ability to maintain a desired level of confidentiality, or where the Fund's auditors posses unique or superior qualifications to provide these services, resulting in superior value and results for the Fund. ----------------------- --------------------------- ----------------------------------------------- --------------------------------------- ------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------- -------------------------- o "One-time" pre-approval o A summary of for the fund fiscal year within all such services and a specified dollar limit related fees 			 (including comparison 			 to specified dollar 				 limits) reported quarterly. o Specific approval is needed to exceed the pre-approved dollar limits for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for "Synergistic" or "Unique Qualifications" Other Services not denoted as pre-approved to the left, or to add a specific service subcategory as "pre-approved" ------------------------------------- -------------------------- SECTION III - POLICY DETAIL, CONTINUED ----------------------- ------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PROHIBITED SERVICE SUBCATEGORIES DESCRIPTION ----------------------- ------------------------- ----------------------------------------------- PROHIBITED SERVICES Services which result 1. Bookkeeping or other services in the auditors losing related to the accounting records or independence status financial statements of the audit under the Rule. client* 2. Financial information systems design and implementation* 3. Appraisal or valuation services, fairness* opinions, or contribution-in-kind reports 4. Actuarial services (i.e., setting actuarial reserves versus actuarial audit work)* 5. Internal audit outsourcing services* 6. Management functions or human resources 7. Broker or dealer, investment advisor, or investment banking services 8. Legal services and expert services unrelated to the audit 9. Any other service that the Public Company Accounting Oversight Board determines, by regulation, is impermissible ----------------------- ------------------------- ----------------------------------------------- ------------------------------------------- ------------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------------- ------------------------------ o These services are not to be o A summary of all performed with the exception of the(*) services and related services that may be permitted fees reported at each if they would not be subject to audit regularly scheduled procedures at the audit client (as Audit Committee meeting defined in rule 2-01(f)(4)) level will serve as continual the firm providing the service. confirmation that has 				 not provided any restricted services. ------------------------------------------- ------------------------------ -------------------------------------------------------------------------------- GENERAL AUDIT COMMITTEE APPROVAL POLICY: o For all projects, the officers of the Funds and the Fund's auditors will each make an assessment to determine that any proposed projects will not impair independence. o Potential services will be classified into the four non-restricted service categories and the "Approval of Audit, Audit-Related, Tax and Other Services" Policy above will be applied. Any services outside the specific pre-approved service subcategories set forth above must be specifically approved by the Audit Committee. o At least quarterly, the Audit Committee shall review a report summarizing the services by service category, including fees, provided by the Audit firm as set forth in the above policy. -------------------------------------------------------------------------------- (2) Disclose the percentage of services described in each of paragraphs (b) through (d) of this Item that were approved by the audit committee pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X. N/A (f) If greater than 50 percent, disclose the percentage of hours expended on the principal accountants engagement to audit the registrant's financial statements for the most recent fiscal year that were attributed to work performed by persons other than the principal accountant's full-time, permanent employees. N/A (g) Disclose the aggregate non-audit fees billed by the registrants accountant for services rendered to the registrant, and rendered to the registrants investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for each of the last two fiscal years of the registrant. N/A (h) Disclose whether the registrants audit committee of the board of trustees has considered whether the provision of non-audit services that were rendered to the registrants investment adviser (not including any subadviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. 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 registrant's audit committee as specified in Section 3(a)(58)(B) of the Exchange Act (15 U.S.C. 78c(a)(58)(B)), so state. N/A (b) If applicable, provide the disclosure required by Rule 10A-3(d) under the Exchange Act (17 CFR 240.10A-3(d)) regarding an exemption from the listing standards for audit committees. N/A ITEM 6. SCHEDULE OF INVESTMENTS. File Schedule of Investments in securities of unaffiliated issuers as of the close of the reporting period as set forth in 210.1212 of Regulation S-X [17 CFR 210.12-12], unless the schedule is included as part of the report to shareholders filed under Item 1 of this Form. Included in Item 1 ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES. A closed-end management investment company that is filing an annual report on this Form N-CSR must, unless it invests exclusively in non-voting securities, describe the policies and procedures that it uses to determine how to vote proxies relating to portfolio securities, including the procedures that the company uses when a vote presents a conflict between the interests of its shareholders, on the one hand, and those of the company's investment adviser; principal underwriter; or any affiliated person (as defined in Section 2(a)(3) of the Investment Company Act of 1940 (15 U.S.C. 80a-2(a)(3)) and the rules thereunder) of the company, its investment adviser, or its principal underwriter, on the other. Include any policies and procedures of the company's investment adviser, or any other third party, that the company uses, or that are used on the company's behalf, to determine how to vote proxies relating to portfolio securities. Not applicable to open-end management investment companies. ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES. (a) If the registrant is a closed-end management investment company that is filing an annual report on this Form N-CSR,provide the following information: (1) State the name, title, and length of service of the person or persons employed by or associated with the registrant or an investment adviser of the registrant who are primarily responsible for the day-to-day management of the registrant's portfolio ("Portfolio Manager"). Also state each Portfolio Manager's business experience during the past 5 years. Not applicable to open-end management investment companies. ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS. (a) If the registrant is a closed-end management investment company, in the following tabular format, provide the information specified in paragraph (b) of this Item with respect to any purchase made by or on behalf of the registrant or any affiliated purchaser, as defined in Rule 10b-18(a)(3) under the Exchange Act (17 CFR 240.10b-18(a)(3)), of shares or other units of any class of the registrant's equity securities that is registered by the registrant pursuant to Section 12 of the Exchange Act (15 U.S.C. 781). Not applicable to open-end management investment companies. ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS. Describe any material changes to the procedures by which shareholders may recommend nominees to the registrant's board of directors, where those changes were implemented after the registrant last provided disclosure in response to the requirements of Item 407(c)(2)(iv) of Regulation S-R(17 CFR 229.407)(as required by Item 22(b)(15)) of Schedule 14A (17 CFR 240.14a-101), or this Item. There have been no material changes to the procedures by which the shareholders may recommend nominees to the registrant's board of directors since the registrant last provided disclosure in response to the requirements of Item 407(c)(2)(iv) of Regulation S-R of Schedule 14(A) in its definitive proxy statement, or this item. ITEM 11. CONTROLS AND PROCEDURES. (a) Disclose the conclusions of the registrant's principal executive and principal financials officers, or persons performing similar functions, regarding the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Act (17 CFR 270.30a-3(c))) as of a date within 90 days of the filing date of the report that includes the disclosure required by this paragraph, based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the Act (17 CFR 270.30(a)-3(b) and Rules 13a-15(b) or 15d-15(b) under the Exchange Act (17 CFR 240.13a-15(b) or 240.15d-15(b)). The registrant's principal executive officer and principal financial officer have concluded that the registrant's disclosure controls and procedures are effective based on the evaluation of these controls and procedures as of a date within 90 days of the filing date of this report. (b) Disclose any change in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the Act (17CFR 270.30a-3(d)) that occured during the second fiscal quarter of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. There were no significant changes in the registrant's internal control over financial reporting that occurred during the second fiscal quarter of the period covered by this report that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting. The registrant's principal executive officer and principal financial officer, however, voluntarily are reporting the following information: In August of 2006 the registrant's investment adviser enhanced its internal procedures for reporting performance information required to be included in prospectuses. Those enhancements involved additional internal controls over the appropriateness of performance data generated for this purpose. Such enhancements were made following an internal review which identified prospectuses relating to certain classes of shares of a limited number of registrants where, inadvertently, performance information not reflecting the deduction of applicable sales charges was included. Those prospectuses were revised, and the revised prospectuses were distributed to shareholders. ITEM 12. EXHIBITS. (a) File the exhibits listed below as part of this Form. Letter or number the exhibits in the sequence indicated. (1) Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit. (2) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Act (17 CFR 270.30a-2(a)) , exactly as set forth below: Filed herewith. SIGNATURES [See General Instruction F] Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (Registrant) Pioneer Asset Allocation Trust By (Signature and Title)* /s/ Lisa M. Jones Lisa M. Jones, President & Chief Executive Officer Date March 29, 2017 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By (Signature and Title)* /s/ Lisa M. Jones Lisa M. Jones, President & Chief Executive Officer Date March 29, 2017 By (Signature and Title)* /s/ Mark E. Bradley Mark E. Bradley, Treasurer & Chief Accounting & Financial Officer Date March 29, 2017 * Print the name and title of each signing officer under his or her signature.