PIONEER BOND FUND /MA/
N-30D, 1996-08-29
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[Pioneer Logo] 

Pioneer 
Bond Fund 

ANNUAL REPORT 6/30/96 

<PAGE>
 
Table of Contents 

<TABLE>
<CAPTION>
<S>                                             <C>
Letter from the Chairman                         1 
Portfolio Summary                                2 
Performance Update                               3 
Portfolio Management Discussion                  6 
Schedule of Investments                          9 
Financial Statements                            14 
Notes to Financial Statements                   20 
Report of Independent Public Accountants        24 
Tax Treatment of Distributions                  25 
Trustees' Fees and Share Ownership              26 
Trustees, Officers and Service Providers        27 
</TABLE>

<PAGE>
 
Pioneer Bond Fund 

LETTER FROM THE CHAIRMAN 6/30/96 

Dear Shareowner, 

It is with great pleasure that I introduce this annual report for Pioneer 
Bond Fund, covering the year ended June 30, 1996. As you see, we've given 
your Fund's annual report a facelift. 

The new, improved style reflects what shareowners told us they want to see in 
fund reports. We wish to thank all of you who took the time to respond to our 
questions. Now, in both your annual and semiannual reports, you'll find a 
Table of Contents and consistent, easy-to-read summaries of portfolio 
information and performance. We've also included a separate Portfolio 
Management Discussion, where your Fund's portfolio manager offers insights 
into market conditions, portfolio strategy and results for the fiscal period. 

As you no doubt are aware, the bond market experienced a number of changes in 
the past year. We saw a significant shift from 1995, when the slow-paced 
economy pushed interest rates down and bond prices up. The trend reversed in 
February, following reports of accelerating economic growth. We are pleased 
to report that, despite the far less favorable environment for bonds overall, 
Pioneer Bond Fund continued to pay shareowners attractive dividends and 
generated a competitive, positive total return. 

On a closing note, we wish to welcome the Fund's new shareowners, 
particularly those who joined us through the Fund's Class C Shares, which 
were introduced on January 31, 1996. Please contact your investment 
representative, or Pioneer at 1-800-225-6292, if you have any questions about 
your investment in Pioneer Bond Fund. Thank you for your continued support. 

Respectfully, 

[/s/ John F. Cogan, Jr.] 

John F. Cogan, Jr. 
Chairman and President 

                                        1
<PAGE>
 
Pioneer Bond Fund 

PORTFOLIO SUMMARY 6/30/96 

Portfolio Quality 

(As a percentage of total investment portfolio) 

[Pie Graphic] 

BB 2%   Commercial Paper 9%   BBB 12%   U.S. Treasury/Agency 25% 
A 31%   AAA 10%   AA 11% 

Effective Portfolio Maturity 

(As a percentage of total investment portfolio) 

10-20 Years 8%   20+ Years 16%   0-2 Years 22% 
7-10 Years 6%   5-7 Years 8%   2-5 Years 40% 

10 Largest Holdings 

(As a percentage of investment in securities) 
<TABLE>
<CAPTION>
<S>                                                                            <C>
 1. U.S. Treasury Notes, 8.25%, 7/15/98                                        5.23% 
 2. U.S. Treasury Notes 8.5%, 2/15/00                                          4.09 
 3. U.S. Treasury Notes, 8.625%, 8/15/97                                       3.45 
 4. Imperical Oil Ltd., 8.75%, 10/15/19                                        2.69 
 5. International Bank for Reconstruction and Development, 9.25%, 7/15/17      2.30 
 6. General Motors Corp., 9.4%, 7/15/21                                        2.24 
 7. Commonwealth Edison Co., First Mortgage Bonds, 9.75%, 2/15/20              2.17 
 8. U.S. Treasury Bonds, 8.75%, 11/05/08                                       2.13 
 9. British Telecom Finance Plc, Deb., 9.625%, 2/15/19                         2.11 
10. Ford Motor Credit Co., 9.14%, 12/30/14                                     2.10 
</TABLE>

   Fund holdings will vary for other periods. 

                                       2
<PAGE>
 
Pioneer Bond Fund 

PERFORMANCE UPDATE 6/30/96 - CLASS A SHARES 

Share Prices and Distributions 

<TABLE>
<CAPTION>
<S>                          <C>           <C>               <C>
 Net Asset Value 
per Share                    6/30/96       6/30/95 
                             $9.08         $9.35 

Distributions per Share      Income        Short-Term        Long-Term 
(6/30/95-6/30/96)            Dividends     Capital Gains     Capital Gains 
                             $0.641               -                 - 
</TABLE>

Investment Returns 

The mountain chart on the right shows the growth of a $10,000 investment made 
in Pioneer Bond Fund at public offering price, compared to the growth of the 
Lehman Brothers Government/Corporate Bond Index. 

<TABLE>
<CAPTION>
<S>             <C>               <C>
Average Annual Total Returns 
(As of June 30, 1996) 

                Net Asset         Public Offering 
Period            Value                Price* 
10 Years          7.83%                 7.34% 
5 Years           7.84                  6.86 
1 Year            4.02                 -0.66 
</TABLE>

[Mountain Chart] 

$24,000  20,000  16,000  12,000  8,000 

[Plot Points Mountain Chart A]
 
                     Lehman Brothers
       Pioneer         Government/
        Bond            Corporate
        Fund           Bond Index
      --------      ----------------
6/86    9550             10000
6/87    9989             10468
6/88    10704            11250
6/89    11900            12639
6/90    12642            13537
6/91    13923            14921
6/92    15737            17035
6/93    17731            19274
6/94    17508            18993
6/95    19519            21417
6/96    20302            22414

Growth of $10,000   $22,414   $20,302 

    [ ] Pioneer Bond Fund* 

[ ] [ ] Lehman Brothers Government/ 
        Corporate Bond Index 

* Reflects deduction of the maximum 4.5% sales charge at the beginning of the 
  period and assumes reinvestment of distributions at net asset value. 

The Lehman Brothers Government/Corporate Bond Index is an unmanaged, 
composite index of the U.S. bond market. It contains 5,353 issues, including 
Treasury and government agency securities, investment-grade corporate bonds 
and Yankee bonds. Index returns assume reinvestment of dividends and, unlike 
Fund returns, do not reflect any fees, expenses or sales charges. You cannot 
invest directly in the Index. 

Past performance does not guarantee future results. Return and share price 
fluctuate, and your shares, when redeemed, may be worth more or less than 
their original cost. 

                                        3
<PAGE>
 
Pioneer Bond Fund 

PERFORMANCE UPDATE 6/30/96 - CLASS B SHARES 

Share Prices and Distributions 

<TABLE>
<CAPTION>
<S>                          <C>           <C>               <C>
Net Asset Value 
per Share                    6/30/96       6/30/95 
                             $9.02         $9.31 

Distributions per Share      Income        Short-Term        Long-Term 
(6/30/95-6/30/96)            Dividends     Capital Gains     Capital Gains 
                             $0.581               -                 - 
</TABLE>

Investment Returns 

The mountain chart on the right shows the growth of a $10,000 investment made 
in Pioneer Bond Fund, compared to the growth of the Lehman Brothers 
Government/Corporate Bond Index. 

<TABLE>
<CAPTION>
<S>                 <C>       <C>
 Average Annual Total Returns 
(As of June 30, 1996) 

                     If           If 
Period              Held      Redeemed* 
Life-of-Fund        5.70%        4.46% 
(4/4/94) 
1 Year              3.15        -0.73 
</TABLE>


[Mountain Chart] 

$16,000  12,000  8,000  4,000 

Plot Points Mountain Chart B

                     Lehman Brothers
       Pioneer         Government/
        Bond            Corporate
        Fund           Bond Index
      --------      ----------------
4/94    10000            10000
6/94    9896             9958
9/94    9914             10007
12/94   9906             10044
3/95    10327            10545
6/95    10942            11229
9/95    11089            11444
12/95   11600            11977
3/96    11274            11697
6/96    10986            11752

Growth of $10,000+   $11,752   $10,992 

    [ ] Pioneer Bond Fund* 

[ ] [ ] Lehman Brothers Government/ 
        Corporate Bond Index 

* Reflects deduction of the maximum applicable contingent deferred sales 
  charge (CDSC) at the end of the period and assumes reinvestment of 
  distributions. The maximum CDSC of 4% declines over six years. 

+ Index comparison begins 4/30/94. The Lehman Brothers Government/Corporate 
  Bond Index is an unmanaged, composite index of the U.S. bond market. It 
  contains 5,353 issues, including Treasury and government agency securities, 
  investment-grade corporate bonds and Yankee bonds. Index returns assume 
  reinvestment of dividends and, unlike Fund returns, do not reflect any 
  fees, expenses or sales charges. You cannot invest directly in the Index. 

  Past performance does not guarantee future results. Return and share price 
  fluctuate, and your shares, when redeemed, may be worth more or less than 
  their original cost. 

                                      4 
<PAGE>
 
Pioneer Bond Fund 

PERFORMANCE UPDATE 6/30/96 - CLASS C SHARES 

Share Prices and Distributions 
<TABLE>
<CAPTION>
<S>                          <C>           <C>               <C>
 Net Asset Value 
per Share                    6/30/96       1/31/96 
                             $9.02         $9.54 

Distributions per Share      Income        Short-Term        Long-Term 
(1/31/96-6/30/96)            Dividends     Capital Gains     Capital Gains 
                             $0.233               -                 - 
</TABLE>

Investment Returns 

The table below shows the Fund's total return since its recent inception. A 
mountain chart comparing the Fund to the Lehman Brothers Government/ 
Corporate Bond Index will appear in the Fund's semiannual report dated 
December 31, 1996. 

<TABLE>
<CAPTION>
<S>                  <C>        <C>
 Cumulative Total Returns 
(As of June 30, 1996) 

                       If           If 
Period                Held      Redeemed* 
Life-of-Fund         -3.00%       -3.95% 
(1/31/96) 

</TABLE>

* Reflects deduction of the 1% contingent deferred sales charge (CDSC) at the 
  end of the period and assumes reinvestment of distributions. 

Past performance does not guarantee future results. Return and share price 
fluctuate, and your shares, when redeemed, may be worth more or less than 
their original cost. 

                                      5 
<PAGE>

Pioneer Bond Fund 

PORTFOLIO MANAGEMENT DISCUSSION 6/30/96 

Dear Shareowner, 

As portfolio manager for Pioneer Bond Fund, I welcome this opportunity to 
update you about the bond market for the period covering your Fund's 
eighteenth fiscal year. First of all, however, allow me to thank you for your 
interest in the Fund; we at Pioneer believe that conservative, high-quality 
investments have a place in most financial portfolios. We will continue to do 
all we can to provide you with dependable dividends and competitive 
investment returns. 

A Shifting Bond Market 
The United States bond market and your Fund began the fiscal year on a 
strong, positive note. In fact, prices of most bonds increased dramatically 
throughout 1995, thanks to low inflation, a slow-moving economy and lower- 
trending interest rates. These conditions remained intact as we moved into 
1996, and the feeling was that the bond market would continue to be 
profitable. The generally optimistic outlook was reinforced when the Federal 
Reserve (the Fed) cut short-term interest rates in December and January, 
indicating that too-fast economic growth and inflation were not concerns. 

The mood changed in February, however, when the monthly employment report, 
one of many indicators used to monitor the economy's strength, showed the 
biggest job increase in 12 years. Worries about an overheating economy 
triggered fears that the Fed would raise short-term rates. At the same time, 
strong economic forecasts led the stock market in its continued upward surge, 
further undermining investor confidence in bonds. The resulting drop in bond 
prices translated into a yield of 6.89% for the benchmark 30-year Treasury 
bond as of June 30, versus 6.62% one year earlier and 5.95% on December 31, 
1995. 

Pioneer Bond Fund's results tracked those of the general market, with solid 
performance for the last six months of 1995, and negative results recorded 
for 1996. When all was said and done, your Fund's Class A Shares posted a 
total return of 4.02% for the year, at net asset value, a hair below the 
4.06% turned in by the average corporate debt A-rated mutual fund tracked by 
Lipper Analytical Services. Lipper, an indepen-

                                      6 
<PAGE>

Pioneer Bond Fund 

dent mutual fund research firm, tracked 116 funds for the period. For 
additional information about your Fund's performance, please refer to the 
Performance Updates, which begin on page 3. 

Focus on a Diversified, High-Quality Portfolio 
Pioneer Bond Fund invests for current income with capital appreciation 
through U.S. government securities and high-quality corporate bonds. At least 
85% of its total assets must be invested in bonds rated A or better. At the 
close of the fiscal year, the Fund's holdings maintained an average quality 
rating of AA. More detailed information about your Fund's portfolio appears 
on page 2. 

As the year progressed and bond prices became more volatile, we adjusted the 
portfolio to make it more conservative. We shortened the Fund's duration 
(which reflects the sensitivity of bond prices to changes in interest rates), 
in large part by increasing short-term cash equivalents. We also augmented 
the Fund's weighting in securities with less than five years to their 
effective maturity, generally by selling Treasury bonds with more than 20 
years to maturity. We prefer to adjust the portfolio with Treasurys, given 
their ready liquidity. These changes moved the portfolio's average effective 
life to 7.6 years, versus 11.1 years last June 30 and 9.6 years on December 
31, 1995. While short-term issues may not be major contributors to the Fund's 
income stream, they do add price stability. We believe our strategy will work 
in the Fund's favor if the economy, bond market and interest rates continue 
to be as erratic as they were over much of the past year. 

As mentioned, we make adjustments to the portfolio by buying and selling 
Treasurys. On the flip side, we prefer to hold corporate securities since we 
subject each issue to a lengthy credit analysis process before we add it to 
the portfolio. Your portfolio's corporate holdings remain diversified across 
a variety of sectors, although we continued to favor industrial issuers. We 
constantly keep an eye toward quality and try to select issues with the 
potential for a credit upgrade. As a result, we tend to choose well-known, 
proven companies. These firms have a solid long-term history of repaying 
their debt; currently we especially like American Airlines, Wal-Mart and 
General Motors. 

                                      7 
<PAGE>
 
Pioneer Bond Fund 

PORTFOLIO MANAGEMENT DISCUSSION 6/30/96 
(continued) 

Moving Forward 
The bond market's results over the past 12 months demonstrate how closely 
investors have watched the economy and how quickly they acted on their 
emotions. Until the economy or policy-makers appear set on a certain course, 
prices could remain volatile over the near term. While we all would prefer 
slow, steady gains from conservative bond investments, you can take solace in 
the fact that a long-term view is the best way to ride out market turbulence 
- - and to work toward future financial goals. 

On a positive note, we think that inflation will remain subdued in the second 
half of the year. Since February, the economy has shown sustainable and good 
growth, but with low inflation. At this point, however, it is uncertain what 
action - if any - the Fed will take. In this election year, the Fed may be 
hesitant to act in the absence of evidence of extreme inflation or economic 
growth. 

Another factor that could benefit bonds is the significant appreciation that 
has taken place in the stock market. Many investors chose to participate in 
stocks during the past year and ignored the bond market. We think this could 
soon change, given the gains the stock market has realized, as well as the 
heightened volatility stocks have been experiencing. We expect many equity 
investors who become nervous about stocks will turn to bonds, especially 
since many bonds are now attractively priced. 

Regardless of market conditions, our primary focus for your Fund remains the 
same - to generate a steady stream of income while maintaining principal. We 
expect Pioneer Bond Fund's conservative focus will continue to provide 
shareowners with solid long-term results. If you have any questions about 
your investment in the Fund, please contact your investment representative, 
or call Pioneer at 1-800-225-6292. 

Respectfully, 

/s/ Sherman B. Russ 

Sherman B. Russ 
Portfolio Manager 

                                      8 
<PAGE>

Pioneer Bond Fund 

SCHEDULE OF INVESTMENTS 6/30/96 
<TABLE>
<CAPTION>
               S&P/Moody's 
Principal      Ratings 
Amount         (Unaudited)                                                     Value 
<S>            <C>           <C>                                         <C>
                             INVESTMENT IN SECURITIES - 90.7% 
                             U.S. Government and Agency 
                             Obligations - 24.8% 
$   79,155                   Federal Home Loan Mortgage Corp., 
                             10.0%, 2002                                  $   83,088 
   140,144                   Federal Home Loan Mortgage Corp., 
                             10.5%, 2019                                     154,377 
   174,294                   Federal Home Loan Mortgage Corp., 
                             REMIC Series 1988-24B, 9.5%, 2005               182,997 
 1,000,000                   Federal National Mortgage Association, 
                             8.8%, 1997                                    1,034,060 
 1,000,000                   Federal National Mortgage Association, 
                             9.2%, 1997                                    1,029,690 
 1,500,000                   Federal National Mortgage Association, 
                             9.2%, 2000                                    1,640,385 
 1,000,000                   Federal National Mortgage Association, 
                             10.35%, 2015                                  1,312,030 
   118,912                   Federal National Mortgage Association, 
                             10.0%, 2019                                     129,501
   856,858                   Federal National Mortgage Association,
                             11.0%, 2019                                     959,141 
 1,440,303                   Federal National Mortgage Association, 
                             REMIC Series 1989-72D, 8.9%, 2019             1,492,053 
   657,023                   Federal National Mortgage Association, 
                             REMIC Series 1989-19A, 10.3%, 2019              717,739 
     7,751                   Federal National Mortgage Association, 
                             REMIC Series 1989-19B, 10.3%, 2019                7,962 
   498,753                   Government National Mortgage 
                             Association, Midget, 10.0%, 2004 to 2006        525,246 
   361,985                   Government National Mortgage 
                             Association, 10.0%, 2018                        395,128 
   196,975                   Government National Mortgage 
                             Association, 9.5%, 2020                         210,509 
   478,486                   Government National Mortgage 
                             Association, 10.0%, 2020                        521,396 
 1,000,000                   Resolution Trust Corp., Series 
                             1992-5A6, 9.238%, 2026                        1,010,000 

   The accompanying notes are an integral part of these financial statements.

                                      9 
<PAGE>
 
Pioneer Bond Fund 

SCHEDULE OF INVESTMENTS 6/30/96 
(continued) 

               S&P/Moody's 
Principal      Ratings 
Amount         (Unaudited)                                                     Value 
                             U.S. Government and Agency 
                             Obligations - (Continued) 
$2,000,000                   U.S. Treasury Bonds, 8.75%, 2008            $ 2,218,440 
 1,565,000                   U.S. Treasury Notes, 8.5%, 1997               1,605,831 
 3,500,000                   U.S. Treasury Notes, 8.625%, 1997             3,602,270 
 5,250,000                   U.S. Treasury Notes, 8.25%, 1998              5,457,533 
 4,000,000                   U.S. Treasury Notes, 8.5%, 2000               4,266,240 
                                                                           ----------- 
                             Total U.S. Government and Agency 
                             Obligations (Cost $28,662,712)              $28,555,616 
                                                                           ----------- 
                             Industrials - 29.0% 
 1,000,000      A-/A2        Alcan Aluminum, Ltd., Deb., 9.625%, 
                             2019                                        $ 1,094,790 
 1,923,825      BBB-/A3      American Airlines Inc., 9.71%, 2007           2,124,115 
 1,000,000      A/A3         ARCO Chemical Co., Deb., 9.8%, 2020           1,229,580 
   500,000      A/A2         Atlantic Richfield Co., Deb., 9.875%, 
                             2016                                            615,795 
 1,500,000      A/A2         Caterpillar Inc., 9.75%, 2019                 1,676,445 
 1,200,000      BBB/Baa3     Centex Corp., Deb., 8.75%, 2007               1,248,000 
 1,500,000      BB+/Baa3     Coastal Corp., Deb., 9.625%, 2012             1,708,785 
 2,000,000      A-/A3        General Motors Corp., Notes, 9.4%, 2021       2,337,700 
 1,000,000      BBB-/Baa2    Georgia-Pacific Corp., Deb., 9.5%, 2022       1,059,230 
 2,600,000      AA+/Aa2      Imperial Oil Ltd., 8.75%, 2019                2,802,436 
 1,000,000      BBB/Ba1      Joy Technologies Co., Sen. Notes, 
                             10.25%, 2003                                  1,100,000 
 1,500,000      BBB/Baa3     News America Holdings, 10.125%, 2012          1,686,750 
 1,000,000      AA/Aa3       Norfolk Southern Corp., Notes, 9.0%, 
                             2021                                          1,162,280 
 1,000,000      A+/A1        J.C. Penney Co., Inc., Deb., 9.75%, 
                             2021                                          1,120,210 
 2,000,000      BBB/Baa1     Phillips Petroleum Co., Deb., 9.18%, 
                             2021                                          2,146,800 
 1,500,000      AA/Aa2       Proctor & Gamble Co., Notes, 9.36%, 
                             2021                                          1,776,825 
 1,000,000      BBB+/A3      Supervalue, Inc., Notes, 8.875%, 2022         1,039,870 
 1,500,000      BBB-/Baa2    Tenneco, Inc., Notes, 9.875%, 2001            1,656,720 

   The accompanying notes are an integral part of these financial statements

                                      10 
<PAGE>
 
Pioneer Bond Fund 

               S&P/Moody's 
Principal      Ratings 
Amount         (Unaudited)                                                     Value 
                             Industrials - (Continued) 
$1,250,000      A+/A1        Texaco Capital Corp., Gtd. Deb., 9.75%, 
                             2020                                        $ 1,545,050 
 2,000,000      BBB-/Ba1     Time Warner Inc., Deb., 9.15%, 2023           2,067,880 
 1,000,000      BB+/Baa3     USX Corp.-U.S. Steel Group, Deb., 
                             9.375%, 2012                                  1,102,540 
 1,000,000      AA/Aa2       Wal-Mart Stores, Inc., Deb., 8.50%, 
                             2024                                          1,054,470 
                                                                           ----------- 
                             Total Industrials (Cost $32,680,551)        $33,356,271 
                                                                           ----------- 
                             Financial - 8.8% 
 2,000,000      A+/A1        Ford Motor Credit Co., 9.14%, 2014          $ 2,194,320 
 1,500,000      AA/Aa2       GEICO Corp., Deb., 9.15%, 2021                1,607,085 
 2,000,000      AAA/Aaa      Standard Credit Card Master Trust, 
                             Series 1991-3A, 8.875%, 1998                  2,091,860 
 2,000,000      AAA/Aaa      Standard Credit Card Trust, Series 
                             1990-6A, 9.375%, 1997                         2,060,000 
 1,000,000      A/A2         Transamerica Corp., 9.875%, 1998              1,048,950 
 1,000,000      A+/A3        W.R. Berkley, Deb., 8.7%, 2022                1,067,990 
                                                                           ----------- 
                             Total Financial (Cost $10,032,928)          $10,070,205 
                                                                           ----------- 
                             Banks - 15.5% 
 1,000,000      A+/A1        Banc One Corp., Sub. Notes, 10.0%, 2010     $ 1,201,320 
 1,000,000      A/A3         BankAmerica, Sub. Notes, 9.375%, 2001         1,095,020 
 1,000,000      AA-/Aa3      Barclays North American Capital Corp., 
                             Gtd. Sub. Cap. Notes, 9.75%, 2021             1,127,490 
 1,000,000      A-/A2        Chase Manhattan, 8.5%, 2002                   1,069,800 
 1,000,000      A-/A2        Chemical NY Corp., Sub. Notes, 9.75%, 
                             1999                                          1,077,300 
   898,000      A/A3         Citicorp, Sub. Notes, 10.75%, 2015              943,448 
 1,250,000      A-/A3        Comerica Inc., Sub. Deb., 10.125%, 1998       1,323,725 
 1,550,000      A-/A2        CoreStates Capital Corp., Gtd. Sub. 
                             Notes, 9.375%, 2003                           1,729,505 
 1,500,000      A-/A2        First Chicago Corp., Sub. Notes, 
                             10.25%, 2001                                  1,699,650 
 2,000,000      BBB+/A3      First Interstate Bancorp, Sub. Notes, 
                             9.0%, 2004                                    2,086,820 

   The accompanying notes are an integral part of these financial statements

                                       11
<PAGE>
 
Pioneer Bond Fund 
SCHEDULE OF INVESTMENTS 6/30/96 
(continued) 

               S&P/Moody's 
Principal      Ratings 
Amount         (Unaudited)                                                     Value 
                             Banks - (Continued) 
$1,500,000      BBB+/A3      Fleet/Norstar Financial Group, Sub. 
                             Notes, 9.9%, 2001                           $ 1,678,425 
 1,000,000      A-/A3        Mellon Financial, Sub. Deb., 9.75%, 
                             2001                                          1,109,690 
 1,000,000      AA-/Aa3      National Westminster Bancorp Inc., Gtd. 
                             Cap. Notes, 9.375%, 2003                      1,127,530 
   500,000      AA-/A1       Republic New York Corp., Sub. Notes, 
                             9.3%, 2021                                      585,920 
                                                                           ----------- 
                             Total Banks (Cost $17,146,014)              $17,855,643 
                                                                           ----------- 
                             Utilities - 5.2% 
   500,000      AAA/Aaa      Cajun Electric Power, Cooperative 
                             Utility Trust, 10.125%, 2019                $   551,120 
 2,000,000      BBB/Baa2     Commonwealth Edison, First Mortgage 
                             Bonds, 9.75%, 2020                            2,260,720 
 1,000,000      A/A2         Virginia Electric Power, 8.75%, 2021          1,048,000 
 1,000,000      A-/A3        ONEOK Inc. Deb., 9.7%, 2019                   1,055,540 
 1,000,000      BBB+/Baa1    GTE Corp., Deb., 10.3%, 2017                  1,095,500 
                                                                           ----------- 
                             Total Utilities (Cost $5,850,410)           $ 6,010,880 
                                                                           ----------- 
                             Sovereigns and Supranationals - 7.4% 
   500,000      AA+/Aa1      British Columbia Hydro Power, 15.5%, 
                             2011                                        $   549,990 
 2,000,000      AAA/Aaa      British Telecom Finance, Deb., 9.625%, 
                             2019                                          2,204,040 
 1,000,000      AAA/Aaa      Inter-American Development Bank, Notes, 
                             9.45%, 1998                                   1,060,550 
 2,000,000      AAA/Aaa      International Bank for Reconstruction 
                             and Development, Deb., 9.25%, 2017            2,393,940 
   500,000      AA-/Aa3      Province of Ontario, 15.75%, 2012               558,730 
 1,000,000      BBB+/A2      Province of Saskatchewan, 9.375%, 2020        1,191,060 

   The accompanying notes are an integral part of these financial statements

                                      12 
<PAGE>
 
Pioneer Bond Fund 

               S&P/Moody's 
Principal      Ratings 
Amount         (Unaudited)                                                      Value 
                             Sovereigns and Supranationals - 
                             (Continued) 
$  500,000      AAA/Aaa      Tokyo (Metropolis of), Gtd. Bonds, 
                             10.375%, 1997                               $    524,570 
                                                                           ----------- 
                             Total Sovereigns and Supranationals 
                             (Cost $8,383,337)                           $  8,482,880 
                                                                           ----------- 
                             TOTAL INVESTMENT IN SECURITIES 
                             (Cost $102,755,952)                         $104,331,495 
                                                                           ----------- 
                             TEMPORARY CASH INVESTMENTS - 9.3% 
                             Commercial Paper - 9.3% 
 3,573,000                   Commercial Credit Corp., 5.37%, 7/2/96      $  3,573,000 
 4,338,000                   Ford Motor Credit Co., 5.45%, 7/3/96           4,338,000 
 2,723,000                   General Electric Credit Corp., 5.37%, 
                             7/1/96                                         2,723,000 
                             TOTAL TEMPORARY CASH INVESTMENTS 
                             (Cost $10,634,000)                          $ 10,634,000 
                                                                           ----------- 
                             TOTAL INVESTMENT IN SECURITIES AND 
                             TEMPORARY CASH INVESTMENTS - 100% (Cost 
                             $113,389,952)(a)(b)                         $114,965,495 
                                                                           -----------
</TABLE>

(a) At June 30, 1996, the net unrealized gain on investments based on cost 
    for federal income tax purposes of $113,389,952 was as follows: 

<TABLE>
<CAPTION>
<S>                                                           <C>
 Aggregate gross unrealized gain for all investments in 
  which there is an excess of value over tax cost             $ 3,180,303 
Aggregate gross unrealized loss for all investments in 
  which there is an excess of tax cost over value              (1,604,760) 
                                                                ---------- 
Net unrealized gain                                           $ 1,575,543 
                                                                ---------- 
</TABLE>

(b) At June 30, 1996, the Fund had a net capital loss carryforward of 
    approximately $3,200,964 which will expire between 1998 and 2004 if not 
    utilized. 

Note: The Fund's investments in mortgage-backed securities of the Government 
      National Mortgage Association (GNMA) are interests in separate pools of 
      mortgages. All separate investments in this issuer which have the same 
      coupon rate have been aggregated for the purpose of presentation in 
      this schedule of investments. 

Purchases and sales of securities (excluding temporary cash investments) for 
the year ended June 30, 1996 were as follows: 

<TABLE>
<CAPTION>
<S>                                    <C>            <C>
                                        Purchases        Sales 
                                          --------      ---------- 
Long-term U.S. Government              $20,923,787    $39,787,869 
Other Long-term Securities              22,676,391     10,200,891 
</TABLE>

   The accompanying notes are an integral part of these financial statements

                                      13 
<PAGE>
 
Pioneer Bond Fund 

BALANCE SHEET 6/30/96 
<TABLE>
<CAPTION>
<S>                                                                <C>
 ASSETS: 
  Investment in securities, at value (including temporary cash 
   investments of $10,634,000) (cost $113,389,952)                 $114,965,495 
  Receivables - 
   Interest                                                           2,543,689 
   Fund shares sold                                                     321,226 
  Other                                                                  11,045 
                                                                       --------- 
    Total assets                                                   $117,841,455 
                                                                       --------- 
LIABILITIES: 
  Payables - 
   Fund shares repurchased                                         $    335,332 
   Dividends                                                            175,159 
  Due to affiliates                                                     140,062 
  Accrued expenses                                                       48,470 
                                                                       --------- 
    Total liabilities                                              $    699,023 
                                                                       --------- 
NET ASSETS: 
  Paid-in capital                                                  $119,332,609 
  Distributions in excess of net investment income                      (50,490) 
  Accumulated net realized loss on investments                       (3,715,230) 
  Net unrealized gain on investments                                  1,575,543 
                                                                       --------- 
    Total net assets                                               $117,142,432 
                                                                       --------- 
Net Asset Value Per Share: 
(Unlimited number of shares authorized) 
  Class A - (based on $101,956,701/11,229,772 shares)              $       9.08 
                                                                       --------- 
  Class B - (based on $14,842,995/1,645,017 shares)                $       9.02 
                                                                       --------- 
  Class C - (based on $342,736/37,978 shares)                      $       9.02 
                                                                       --------- 
Maximum Offering Price: 
  Class A                                                          $       9.51 
                                                                       --------- 
</TABLE>

   The accompanying notes are an integral part of these financial statements

                                      14 
<PAGE>
 
Pioneer Bond Fund 

STATEMENT OF OPERATIONS 
For the Year Ended 6/30/96 
<TABLE>
<CAPTION>
 INVESTMENT INCOME: 
<S>                                                        <C>         <C>
  Interest                                                             $9,441,368 
                                                                           --------- 
EXPENSES: 
  Management fees                                          $588,432 
  Transfer agent fees 
   Class A                                                  226,695 
   Class B                                                   27,817 
   Class C                                                      351 
  Distribution fees 
   Class A                                                  248,056 
   Class B                                                  119,908 
   Class C                                                      789 
  Accounting                                                 76,880 
  Professional fees                                          69,850 
  Registration fees                                          57,227 
  Custodian fees                                             28,048 
  Printing                                                   20,799 
  Fees and expenses of nonaffiliated trustees                17,961 
  Miscellaneous                                              20,164 
                                                               ---- 
    Total expenses                                                     $ 1,502,977 
    Less fees paid indirectly                                              (19,157) 
                                                                           --------- 
    Net expenses                                                       $ 1,483,820 
                                                                           --------- 
     Net investment income                                             $ 7,957,548 
                                                                           --------- 
REALIZED AND UNREALIZED LOSS ON INVESTMENTS: 
  Net realized loss on investments                                     $  (759,570) 
  Change in net unrealized gain on investments                         $(2,778,133) 
                                                                           --------- 
   Net loss on investments                                             $(3,537,703) 
                                                                           --------- 
   Net increase in net assets resulting from operations                $ 4,419,845 
                                                                           --------- 
</TABLE>

   The accompanying notes are an integral part of these financial statements

                                      15 
<PAGE>
 
Pioneer Bond Fund 

STATEMENTS OF CHANGES IN NET ASSETS 
For the Years Ended 6/30/96 and 6/30/95 
<TABLE>
<CAPTION>
                                                              Year Ended      Year Ended 
FROM OPERATIONS:                                               6/30/96         6/30/95 
<S>                                                          <C>             <C>
Net investment income                                        $  7,957,548    $  8,154,313 
Net realized loss on investments                                 (759,570)     (2,541,990) 
Change in net unrealized gain/loss on investments              (2,778,133)      6,451,657 
                                                                ---------     ----------- 
  Net increase in net assets resulting from operations       $  4,419,845    $ 12,063,980 
                                                                ---------     ----------- 

DISTRIBUTIONS TO SHAREHOLDERS: 
From net investment income 
  Class A ($0.64 and 0.68 per share, respectively)           $ (7,298,352)   $ (7,888,862) 
  Class B ($0.57 and 0.62 per share, respectively)               (714,880)       (258,198) 
  Class C ($0.22 and 0.00 per share, respectively)                 (4,649)              - 
In excess of net investment income 
  Class B ($0.01 and 0.00 per share, respectively)                (34,464)              - 
  Class C ($0.01 and 0.00 per share, respectively)                   (189)              - 
                                                                ---------     ----------- 
   Total distributions to shareholders                       $ (8,052,534)   $ (8,147,060) 
                                                                ---------     ----------- 
FROM FUND SHARE TRANSACTIONS: 
Net proceeds from sale of shares                             $ 32,345,460    $ 26,149,127 
Reinvestment of distributions                                   5,865,063       6,062,601 
Cost of shares repurchased                                    (34,931,359)    (26,503,240) 
                                                                ---------     ----------- 
  Net increase in net assets resulting from fund 
    share transactions                                       $  3,279,164    $  5,708,488 
                                                                ---------     ----------- 
  Net increase (decrease) in net assets                      $   (353,525)   $  9,625,408 

NET ASSETS: 
Beginning of year                                            $117,495,957    $107,870,549 
                                                                ---------     ----------- 
End of year (including (distributions in excess of)/ 
  accumulated undistributed net investment income of 
  $(50,490) and $66,799, respectively)                       $117,142,432    $117,495,957 
                                                                ---------     ----------- 
</TABLE>

<TABLE>
<CAPTION>
                                    '96 Shares    '96 Amount     '95 Shares      '95 Amount 
<S>                                 <C>          <C>              <C>            <C>
Class A 
Shares sold                          2,099,659   $ 19,598,057      2,143,981     $ 19,180,561 
Reinvestment of distributions          574,935      5,351,873        654,382        5,879,994 
Less shares repurchased             (3,229,151)   (30,032,780)    (2,814,975)     (25,231,568) 
                                      --------      ---------      ----------      ----------- 
  Net decrease                        (554,557)  $ (5,082,850)       (16,612)    $   (171,013) 
                                      --------      ---------      ----------      ----------- 
Class B 
Shares sold                         1,330,447    $ 12,402,112        773,773     $  6,968,566 
Reinvestment of distributions           55,012        508,688         20,268          182,607 
Less shares repurchased               (528,935)    (4,897,315)      (139,897)      (1,271,672) 
                                      --------      ---------      ----------      ----------- 
  Net increase                        856,524    $  8,013,485        654,144     $  5,879,501 
                                      --------      ---------      ----------      ----------- 
Class C* 
Shares sold                             37,622   $    345,291 
Reinvestment of distributions              497          4,502 
Less shares repurchased                   (141)        (1,264) 
                                      --------      --------- 
  Net increase                          37,978   $    348,529 
                                      --------      --------- 
</TABLE>

*Class C shares were first publicly offered on January 31, 1996. 

   The accompanying notes are an integral part of these financial statements

                                      16 
<PAGE>
 
Pioneer Bond Fund 

FINANCIAL HIGHLIGHTS 6/30/96 

<TABLE>
<CAPTION>
                                             Year Ended   Year Ended    Year Ended    Year Ended     Year Ended 
                                              6/30/96       6/30/95       6/30/94       6/30/93       6/30/92 
<S>                                          <C>           <C>           <C>           <C>            <C>
CLASS A 
Net asset value, beginning of year           $    9.35     $   9.04      $   9.81      $   9.37       $   8.99 
                                               --------      --------      --------      --------     ---------- 
Increase (decrease) from investment 
  operations: 
 Net investment income                       $    0.64     $   0.68      $   0.67      $   0.70       $   0.74 
 Net realized and unrealized gain (loss) 
  on investments                                 (0.27)        0.31         (0.77)         0.44           0.39 
                                               --------      --------      --------      --------     ---------- 
  Net increase (decrease) from 
  investment operations                      $    0.37     $   0.99      $  (0.10)     $   1.14       $   1.13 
Distributions to shareholders from: 
 Net investment income                           (0.64)       (0.68)        (0.67)        (0.70)         (0.75) 
                                               --------      --------      --------      --------     ---------- 
Net increase (decrease) in net asset 
  value                                      $   (0.27)    $   0.31      $  (0.77)     $   0.44       $   0.38 
                                               --------      --------      --------      --------     ---------- 
Net asset value, end of year                 $    9.08     $   9.35      $   9.04      $   9.81       $   9.37 
                                               --------      --------      --------      --------     ---------- 
Total return*                                     4.02%       11.48%        (1.26%)       12.67%         13.03% 
Ratio of net expenses to average net 
  assets                                          1.19%+       1.14%         1.05%         1.10%          1.09% 
Ratio of net investment income to 
  average net assets                              6.80%+       7.55%         6.93%         7.37%          8.04% 
Portfolio turnover rate                             39%          37%           39%           37%            17% 
Net assets, end of year (in thousands)       $101,957      $110,158      $106,659      $112,900       $102,503 
Ratios assuming reduction for fees paid 
  indirectly: 
 Net expenses                                     1.18%           -             -             -              - 
 Net investment income                            6.81%           -             -             -              - 
</TABLE>

 * Assumes initial investment at net asset value at the beginning of each 
   period, reinvestment of all distributions, the complete redemption of the 
   investment at net asset value at the end of each period and no sales 
   charges. Total return would be reduced if sales charges were taken into 
   account. 
 + Ratios assuming no reduction for fees paid indirectly. 

   The accompanying notes are an integral part of these financial statements

                                      17 
<PAGE>
 
Pioneer Bond Fund 

FINANCIAL HIGHLIGHTS 6/30/96 
<TABLE>
<CAPTION>
                                                       Year Ended    Year Ended      4/4/94 to 
                                                         6/30/96       6/30/95        6/30/94 
<S>                                                      <C>           <C>          <C>
CLASS B 
Net asset value, beginning of period                     $  9.31       $ 9.02         $ 9.23 
                                                          --------     --------     ----------- 
Increase (decrease) from 
 investment operations: 
 Net investment income                                      0.57         0.60           0.14 
 Net realized and unrealized gain (loss) 
   on investments                                          (0.28)        0.31          (0.21) 
                                                          --------     --------     ----------- 
   Net increase (decrease) from 
    investment operations                                $  0.29       $ 0.91         $(0.07) 
Distributions to shareholders: 
 From net investment income                                (0.57)       (0.62)         (0.14) 
 In excess of net investment income                        (0.01)          -               - 
                                                          --------     --------     ----------- 
Net increase (decrease) in net asset value               $ (0.29)      $ 0.29         $(0.21) 
                                                          --------     --------     ----------- 
Net asset value, end of period                           $  9.02       $ 9.31         $ 9.02 
                                                          --------     --------     ----------- 
Total return*                                               3.15%       10.57%         (0.73%) 
Ratio of net expenses to average net assets                 1.96%+       1.97%          1.92%** 
Ratio of net investment income to average 
  net assets                                                6.01%+       6.60%          6.09%** 
Porfolio turnover rate                                        39%          37%            39% 
Net assets, end of period (in thousands)                 $14,843       $7,338         $1,212 
Ratios assuming reduction for fees paid indirectly: 
 Net expenses                                               1.94%           -              - 
 Net investment income                                      6.03%           -              - 
</TABLE>

 * Assumes initial investment at net asset value at the beginning of each 
   period, reinvestment of all distributions, the complete redemption of the 
   investment at net asset value at the end of each period and no sales 
   charges. Total return would be reduced if sales charges were taken into 
   account. 
** Annualized. 
 + Ratios assuming no reduction for fees paid indirectly. 

   The accompanying notes are an integral part of these financial statements

                                      18 
<PAGE>
 
Pioneer Bond Fund 

FINANCIAL HIGHLIGHTS 6/30/96 
<TABLE>
<CAPTION>
                                                       1/31/96 to 
                                                        6/30/96 
<S>                                                     <C>
CLASS C+ 
Net asset value, beginning of period                     $ 9.54 
                                                         -------- 
Increase (decrease) from investment operations: 
 Net investment income                                     0.23 
 Net realized and unrealized loss on investments          (0.52) 
                                                         -------- 
  Net decrease from investment operations                $(0.29) 
Distributions to shareholders: 
 From net investment income                               (0.22) 
 In excess of net investment income                       (0.01) 
                                                         -------- 
Net decrease in net asset value                          $(0.52) 
                                                         -------- 
Net asset value, end of period                           $ 9.02 
                                                         -------- 
Total return*                                             (3.00%) 
Ratio of net expenses to average net assets                2.18%**+ 
Ratio of net investment income to average net 
  assets                                                   5.79%**+ 
Porfolio turnover rate                                       39% 
Net assets, end of period (in thousands)                 $  343 
Ratios assuming reduction for fees paid indirectly: 
 Net expenses                                              2.13%** 
 Net investment income                                     5.84%** 
</TABLE>


 + Class C shares were first publicly offered on January 31, 1996. 
 * Assumes initial investment at net asset value at the beginning of each 
   period, reinvestment of all distributions, the complete redemption of the 
   investment at net asset value at the end of each period and no sales 
   charges. Total return would be reduced if sales charges were taken into 
   account. 
** Annualized. 
 + Ratios assuming no reduction for fees paid indirectly. 

   The accompanying notes are an integral part of these financial statements

                                      19 
<PAGE>
 
Pioneer Bond Fund 

NOTES TO FINANCIAL STATEMENTS 6/30/96 

1. Organization and Significant Accounting Policies 
Pioneer Bond Fund (the Fund) is a Massachusetts business trust registered 
under the Investment Company Act of 1940 as a diversified, open-end 
management investment company. The investment objective of the Fund is to 
seek current income from a high quality portfolio. 

The Fund offers three classes of shares - Class A, Class B and Class C 
shares. Class C shares were first publicly offered on January 31, 1996. The 
shares of Class A, Class B and Class C represent an interest in the same 
portfolio of investments of the Fund and have equal rights to voting, 
redemptions, dividends and liquidation, except that each class of shares can 
bear different transfer agent and distributions fees and have exclusive 
voting rights with respect to the distribution plans that have been adopted 
by Class A, Class B and Class C shareholders, respectively. 

The Fund's financial statements have been prepared in conformity with 
generally accepted accounting principles that require the management of the 
Fund to, among other things, make estimates and assumptions that affect the 
reported amounts of assets and liabilities, the disclosure of contingent 
assets and liabilities at the date of the financial statements, and the 
reported amounts of revenues and expenses during the reporting periods. 
Actual results could differ from those estimates. The following is a summary 
of significant accounting policies consistently followed by the Fund, which 
are in conformity with those generally accepted in the investment company 
industry: 

A. Security Valuation 
   Security transactions are recorded on trade date. Securities are valued 
   based on valuations furnished by an independent pricing service that 
   utilizes a matrix system. This matrix system reflects such factors as 
   security prices, yields, maturities, and ratings and is supplemented by 
   dealer and exchange quotations and fair market value information from 
   other sources, as required. Principal amounts of mortgage-backed 
   securities are adjusted for monthly paydowns. Temporary cash investments 
   are valued at amortized cost. Interest income is recorded on the accrual 
   basis. 

   Gains and losses on sales of investments are calculated on the "identified 
   cost" method for both financial reporting and federal income tax purposes. 
   It is the Fund's practice to first select for sale those securities that 
   have the highest cost and also qualify for long-term capital gain or loss 
   treatment for tax purposes. 

                                      20 
<PAGE>
 
B. Federal Income Taxes 
   It is the Fund's policy to comply with the requirements of the Internal 
   Revenue Code applicable to regulated investment companies and to 
   distribute all of its taxable income and net realized capital gains, if 
   any, to its shareholders. Therefore, no federal income tax provision is 
   required. 

   The characterization of distributions to shareholders for financial 
   reporting purposes is determined in accordance with federal income tax 
   rules. Therefore, the source of the Fund's distributions may be shown in 
   the accompanying financial statements as either from or in excess of net 
   investment income or net realized gain on investment transactions, or from 
   paid-in-capital, depending on the type of book/tax differences that may 
   exist. 

   At June 30, 1996, the Fund has reclassed $22,303 to paid-in capital and to 
   distributions in excess of net investment income. This reclassification 
   has no impact on the net asset value of the Fund and is designed to 
   present the Fund's capital accounts on a tax basis. 

C. Fund Shares 
   The Fund records sales and repurchases of its shares on trade date. Net 
   losses, if any, as a result of cancellations are absorbed by Pioneer Funds 
   Distributor, Inc. (PFD), the principal underwriter for the Fund and an 
   indirect subsidiary of The Pioneer Group, Inc. (PGI). PFD earned $39,583 
   in underwriting commissions on the sale of fund shares during the year 
   ended June 30, 1996. The Fund declares as daily dividends substantially 
   all of its net investment income. All dividends are paid on a monthly 
   basis. Short-term capital gain distributions, if any, may be declared with 
   the daily dividends. Distributions paid by the Fund, if any, with respect 
   to each class of shares are calculated in the same manner, at the same 
   time, on the same day and in the same amount, except that Class A, Class B 
   and Class C shares can bear different transfer agent and distribution 
   fees. 

D. Class Allocations 
   Distribution fees are calculated based on the average daily net asset 
   value attributable to Class A, Class B and Class C shares of the Fund, 
   respectively. Shareholders of each class share all expenses and fees paid 
   to the transfer agent, Pioneering Services Corporation (PSC), for their 
   services, which are allocated based on the number of accounts in each 
   class and the ratable allocation of related out-of-pocket expenses (see 
   Note 3). Income, common expenses and realized and unrealized 

                                      21 
<PAGE>
 
Pioneer Bond Fund 

NOTES TO FINANCIAL STATEMENTS 6/30/96 

(continued) 

   gains and losses are calculated at the Fund level and allocated daily to 
   each class of shares based on the respective percentage of adjusted net 
   assets at the beginning of the day. 

2. Management Agreement 
Pioneering Management Corporation (PMC), the Fund's investment adviser, 
manages the Fund's portfolio, and is a wholly owned subsidiary of PGI. 
Management fees are calculated daily at the annual rate of 0.50% of the 
Fund's average daily net assets. 

In addition, under the management agreement, certain other services and 
costs, including accounting, regulatory reporting and insurance premiums, are 
paid by the Fund. Included in due to affiliates is $44,246 and $6,085 in 
management and accounting fees, respectively, payable to PMC at June 30, 
1996. 

3. Transfer Agent 
PSC, a wholly owned subsidiary of PGI, provides substantially all transfer 
agent and shareholder services to the Fund at negotiated rates. Included in 
due to affiliates is $23,103 in transfer agent fees payable to PSC at June 
30, 1996. 

4. Distribution Plans 
The Fund adopted a Plan of Distribution for each class of shares (Class A 
Plan, Class B Plan and Class C Plan) in accordance with Rule 12b-1 of the 
Investment Company Act of 1940. Pursuant to the Class A Plan, the Fund pays 
PFD a sevice fee of up to 0.25% of the Fund's average daily net assets in 
reimbursement of its actual expenditures to finance activities primarily 
intended to result in the sale of Class A shares. Pursuant to the Class B 
Plan and Class C Plan, the Fund pays PFD 1.00% of the average daily net 
assets attributable to each class of shares. The fee consists of a 0.25% 
service fee and a 0.75% distribution fee paid as compensation for personal 
services and/or account maintenance services or distribution services with 
regard to Class B and Class C shares. Included in due to affiliates is 
$66,628 in distribution fees payable to PFD at June 30, 1996. 

In addition, redemptions of each class of shares may be subject to a 
contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on 
certain net asset value purchases of Class A shares that are redeemed within 
one year of purchase. Class B shares that are redeemed within six years of 
purchase are subject to a CDSC at declining rates beginning at 4.0%, based on 
the lower of cost or market value of shares being 

                                      22 
<PAGE>
 
Pioneer Bond Fund 

redeemed. Redemptions of Class C shares within one year of purchase are 
subject to a CDSC of 1.00%. Proceeds from the CDSC are paid to PFD. For the 
year ended June 30, 1996, CDSCs in the amount of $33,807 were paid to PFD. 

5. Expense Offsets 
The Fund has entered into certain expense offset arrangements resulting in a 
reduction in the Fund's total expenses. For the year ended June 30, 1996, the 
Fund's expenses were reduced by $19,157 under such arrangements. 

                                      23 
<PAGE>
 
Pioneer Bond Fund 

REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS 

To the Shareholders and the Board of Trustees of 
Pioneer Bond Fund: 

We have audited the accompanying balance sheet of Pioneer Bond Fund, 
including the schedule of investments, as of June 30, 1996, and the related 
statement of operations, the statements of changes in net assets and 
financial highlights for the periods presented. These financial statements 
and financial highlights are the responsibility of the Fund's management. Our 
responsibility is to express an opinion on these financial statements and 
financial highlights based on our audits. 

We conducted our audits in accordance with generally accepted auditing 
standards. Those standards require that we plan and perform the audit to 
obtain reasonable assurance about whether the financial statements and 
financial highlights are free of material misstatement. An audit includes 
examining, on a test basis, evidence supporting the amounts and disclosures 
in the financial statements. Our procedures included confirmation of 
securities owned as of June 30, 1996 by correspondence with the custodian. An 
audit also includes assessing the accounting principles used and significant 
estimates made by management, as well as evaluating the overall financial 
statement presentation. We believe that our audits provide a reasonable basis 
for our opinion. 

In our opinion, the financial statements and financial highlights referred to 
above present fairly, in all material respects, the financial position of 
Pioneer Bond Fund as of June 30, 1996, the results of its operations, the 
changes in its net assets and financial highlights for the periods presented, 
in conformity with generally accepted accounting principles. 

ARTHUR ANDERSEN LLP 

Boston, Massachusetts 
August 1, 1996 

                                      24 
<PAGE>
 
Pioneer Bond Fund 

TAX TREATMENT OF DISTRIBUTIONS 
Made during the Year Ended 6/30/96 

During the year ended 6/30/96, Pioneer Bond Fund paid the following 
distributions from net investment income: 

<TABLE>
<CAPTION>
           Distributions  Distributions    Distributions 
Payment       Per Share      Per Share       Per Share 
 Date         (Class A)      (Class B)      (Class C)* 
<S>             <C>            <C>            <C>
 7/31/95        $0.055         $0.053         $     - 
 8/31/95         0.055          0.053               - 
 9/29/95         0.053          0.048               - 
10/31/95         0.053          0.048               - 
11/30/95         0.053          0.048               - 
12/29/95         0.054          0.049               - 
 1/31/96         0.054          0.049               - 
 2/29/96         0.052          0.047           0.047 
 3/29/96         0.053          0.047           0.047 
 4/30/96         0.054          0.047           0.047 
 5/31/96         0.054          0.047           0.047 
 6/28/96         0.051          0.045           0.045 
               ---------      ---------      ----------- 
Total           $0.641         $0.581         $0.233 
               ---------      ---------      ----------- 
</TABLE>

For purposes of the dividend exclusion, none of the distributions per share 
qualify for the exclusion. 

*Class C shares were first publicly offered on January 31, 1996. 

                                      25 
<PAGE>
 
Pioneer Bond Fund 

TRUSTEES' FEES AND SHARE OWNERSHIP 6/30/96 

Trustees' Fees, Principal Shareholders and Share 
Ownership of Trustees and Officers (Unaudited) 

The aggregate direct remuneration paid by the Fund to trustees and officers 
during the year ended June 30, 1996 was $13,571, plus expenses incurred in 
attending trustees meetings of $3,618. Fees of trustees who are affiliated 
with or are "interested persons" of Pioneering Management Corporation and 
Pioneer Funds Distributor, Inc., investment adviser and underwriter, 
respectively, of the Fund ($19,206 in 1996), are reimbursed to the Fund by 
Pioneering Management Corporation in accordance with the management contract 
with the Fund. At June 30, 1996, the trustees and officers of the Fund owned 
beneficially 146,331 Class A shares of the Fund (approximately 1.3% of the 
outstanding Class A shares). The Pioneer Group, Inc. is a publicly held 
corporation of which Mr. Cogan beneficially owned approximately 15% of the 
outstanding shares of capital stock at June 30, 1996. 

                                      26 
<PAGE>
 
Pioneer Bond Fund 

TRUSTEES, OFFICERS AND SERVICE PROVIDERS 

Trustees                       Officers 
John F. Cogan, Jr.             John F. Cogan, Jr., Chairman and 
Richard H. Egdahl, M.D.         President 
Margaret B.W. Graham           David D. Tripple, Executive Vice President 
John W. Kendrick               Sherman B. Russ, Vice President 
Marguerite A. Piret            William H. Keough, Treasurer 
David D. Tripple               Joseph P. Barri, Secretary 
Stephen K. West 
John Winthrop 

Investment Adviser 
Pioneering Management Corporation 

Custodian 
Brown Brothers Harriman & Co. 

Independent Public Accountants 
Arthur Andersen LLP 

Principal Underwriter 
Pioneer Funds Distributor, Inc. 

Legal Counsel 
Hale and Dorr 

Shareholder Services and Transfer Agent 
Pioneering Services Corporation 

                                      27 
<PAGE>


                          This page for your notes. 



<PAGE>

How to Contact Pioneer 

We are pleased to offer a variety of convenient ways for you to contact us 
for assistance or information. 

You can call us for: 
<TABLE>
<CAPTION>
<S>                                                   <C>
Account information, including existing accounts, 
new accounts, prospectuses, applications 
and service forms                                           1-800-225-6292 

FactFoneSM for automated fund yields, prices, 
account information and transactions                        1-800-225-4321 

Retirement plans information                                1-800-622-0176 

Telecommunications Device for the Deaf (TDD)                1-800-225-1997 

Or write to us at: 

Pioneering Services Corporation 
60 State Street 
Boston, Massachusetts 02109 

Our toll-free fax                                           1-800-225-4240 

Our Internet e-mail address                           [email protected] 
(for general questions about Pioneer only) 

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This report must be preceded or accompanied by a current 
Fund prospectus. 

[Pioneer Logo] 

Pioneer Funds Distributor, Inc. 
60 State Street 
Boston, Massachusetts 02109 

0896-3597 
(c) Pioneer Funds Distributor, Inc. 
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