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<ACCEPTANCE-DATETIME>20230822121232
ACCESSION NUMBER:		0000707823-23-000089
CONFORMED SUBMISSION TYPE:	485BPOS
PUBLIC DOCUMENT COUNT:		33
FILED AS OF DATE:		20230822
DATE AS OF CHANGE:		20230822
EFFECTIVENESS DATE:		20230823

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIDELITY MT VERNON STREET TRUST
		CENTRAL INDEX KEY:			0000707823
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		485BPOS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-03583
		FILM NUMBER:		231191894

	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:	FIDELITY GROWTH COMPANY FUND
		DATE OF NAME CHANGE:	19910110

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIDELITY MERCURY FUND
		DATE OF NAME CHANGE:	19861216

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIDELITY MT VERNON STREET TRUST
		CENTRAL INDEX KEY:			0000707823
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		485BPOS
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	002-79755
		FILM NUMBER:		231191893

	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:	FIDELITY GROWTH COMPANY FUND
		DATE OF NAME CHANGE:	19910110

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIDELITY MERCURY FUND
		DATE OF NAME CHANGE:	19861216
<SERIES-AND-CLASSES-CONTRACTS-DATA>
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<SERIES>
<OWNER-CIK>0000707823
<SERIES-ID>S000081601
<SERIES-NAME>Fidelity Equity Growth K6 Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000244528
<CLASS-CONTRACT-NAME>Fidelity Equity Growth K6 Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FEGKX
</CLASS-CONTRACT>
</SERIES>
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<TYPE>485BPOS
<SEQUENCE>1
<FILENAME>filing8681.htm
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