<SEC-DOCUMENT>0000276776-17-000044-index.html : 20170703 <SEC-HEADER>0000276776-17-000044.hdr.sgml : 20170703 <ACCEPTANCE-DATETIME>20170703134219 ACCESSION NUMBER: 0000276776-17-000044 CONFORMED SUBMISSION TYPE: 497 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20170703 DATE AS OF CHANGE: 20170703 EFFECTIVENESS DATE: 20170703 FILER: COMPANY DATA: COMPANY CONFORMED NAME: PIONEER BOND FUND /DE/ CENTRAL INDEX KEY: 0000276776 IRS NUMBER: 042652279 STATE OF INCORPORATION: DE FISCAL YEAR END: 0630 FILING VALUES: FORM TYPE: 497 SEC ACT: 1933 Act SEC FILE NUMBER: 002-62436 FILM NUMBER: 17945037 BUSINESS ADDRESS: STREET 1: 60 STATE ST 13TH FL CITY: BOSTON STATE: MA ZIP: 02109 BUSINESS PHONE: 6174224947 MAIL ADDRESS: STREET 1: 60 STATE ST STREET 2: 13TH FLOOR CITY: BOSTON STATE: MA ZIP: 02109-1820 FORMER COMPANY: FORMER CONFORMED NAME: PIONEER BOND FUND /MA/ DATE OF NAME CHANGE: 19920703 <SERIES-AND-CLASSES-CONTRACTS-DATA> <EXISTING-SERIES-AND-CLASSES-CONTRACTS> <SERIES> <OWNER-CIK>0000276776 <SERIES-ID>S000003927 <SERIES-NAME>Pioneer Bond Fund <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000011026 <CLASS-CONTRACT-NAME>Pioneer Bond Fund: Class A <CLASS-CONTRACT-TICKER-SYMBOL>PIOBX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000011028 <CLASS-CONTRACT-NAME>Pioneer Bond Fund: Class C <CLASS-CONTRACT-TICKER-SYMBOL>PCYBX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000011029 <CLASS-CONTRACT-NAME>Pioneer Bond Fund: Class Y <CLASS-CONTRACT-TICKER-SYMBOL>PICYX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000011031 <CLASS-CONTRACT-NAME>Pioneer Bond Fund: Class R <CLASS-CONTRACT-TICKER-SYMBOL>PBFRX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000123839 <CLASS-CONTRACT-NAME>Pioneer Bond Fund: Class K <CLASS-CONTRACT-TICKER-SYMBOL>PBFKX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000188324 <CLASS-CONTRACT-NAME>Pioneer Bond Fund: Class T </CLASS-CONTRACT> </SERIES> </EXISTING-SERIES-AND-CLASSES-CONTRACTS> </SERIES-AND-CLASSES-CONTRACTS-DATA> </SEC-HEADER> <DOCUMENT> <TYPE>497 <SEQUENCE>1 <FILENAME>bf070317pro497e.txt <DESCRIPTION>PROSPECTUS SUMMARY <TEXT> Document 1 - file: bf070317pro497e.txt
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