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<ACCEPTANCE-DATETIME>20200127123101
ACCESSION NUMBER:		0001379491-20-000229
CONFORMED SUBMISSION TYPE:	485BPOS
PUBLIC DOCUMENT COUNT:		37
FILED AS OF DATE:		20200127
DATE AS OF CHANGE:		20200127
EFFECTIVENESS DATE:		20200129

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:		20548250

	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:		1940 Act
		SEC FILE NUMBER:	811-03583
		FILM NUMBER:		20548249

	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
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<OWNER-CIK>0000707823
<SERIES-ID>S000007118
<SERIES-NAME>Fidelity Growth Strategies Fund
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<CLASS-CONTRACT-ID>C000019447
<CLASS-CONTRACT-NAME>Fidelity Growth Strategies Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FDEGX
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<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000064241
<CLASS-CONTRACT-NAME>Class K
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<SERIES-ID>S000007119
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<CLASS-CONTRACT-NAME>Class K
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<SERIES>
<OWNER-CIK>0000707823
<SERIES-ID>S000007120
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<CLASS-CONTRACT-NAME>Fidelity New Millennium Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FMILX
</CLASS-CONTRACT>
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<SERIES>
<OWNER-CIK>0000707823
<SERIES-ID>S000042626
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</CLASS-CONTRACT>
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</CLASS-CONTRACT>
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<SERIES>
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<SERIES-ID>S000057290
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<SERIES>
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<CLASS-CONTRACT-NAME>Fidelity Growth Company K6 Fund
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<SEQUENCE>1
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