<SEC-DOCUMENT>0000215829-15-000064-index.html : 20150528 <SEC-HEADER>0000215829-15-000064.hdr.sgml : 20150528 <ACCEPTANCE-DATETIME>20150528102229 ACCESSION NUMBER: 0000215829-15-000064 CONFORMED SUBMISSION TYPE: N-CSR PUBLIC DOCUMENT COUNT: 72 CONFORMED PERIOD OF REPORT: 20150331 FILED AS OF DATE: 20150528 DATE AS OF CHANGE: 20150528 EFFECTIVENESS DATE: 20150528 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Fidelity Colchester Street Trust CENTRAL INDEX KEY: 0000356173 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 0331 FILING VALUES: FORM TYPE: N-CSR SEC ACT: 1940 Act SEC FILE NUMBER: 811-03320 FILM NUMBER: 15894245 BUSINESS ADDRESS: STREET 1: 245 SUMMER STREET CITY: BOSTON STATE: MA ZIP: 02210 BUSINESS PHONE: 617-563-7000 MAIL ADDRESS: STREET 1: 245 SUMMER STREET CITY: BOSTON STATE: MA ZIP: 02210 FORMER COMPANY: FORMER CONFORMED NAME: COLCHESTER STREET TRUST DATE OF NAME CHANGE: 19980324 FORMER COMPANY: FORMER CONFORMED NAME: FIDELITY INSTITUTIONAL CASH PORTFOLIOS DATE OF NAME CHANGE: 19920703 FORMER COMPANY: FORMER CONFORMED NAME: CASH INVESTMENT FUND DATE OF NAME CHANGE: 19850414 <SERIES-AND-CLASSES-CONTRACTS-DATA> <EXISTING-SERIES-AND-CLASSES-CONTRACTS> <SERIES> <OWNER-CIK>0000356173 <SERIES-ID>S000004818 <SERIES-NAME>Treasury Only Portfolio <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000013037 <CLASS-CONTRACT-NAME>Class I <CLASS-CONTRACT-TICKER-SYMBOL>FSIXX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000013074 <CLASS-CONTRACT-NAME>Class II <CLASS-CONTRACT-TICKER-SYMBOL>FOXXX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000013075 <CLASS-CONTRACT-NAME>Class III <CLASS-CONTRACT-TICKER-SYMBOL>FOIXX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000013076 <CLASS-CONTRACT-NAME>Select Class <CLASS-CONTRACT-TICKER-SYMBOL>FTYXX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000056567 <CLASS-CONTRACT-NAME>Class IV <CLASS-CONTRACT-TICKER-SYMBOL>FOPXX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000141702 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