<SEC-DOCUMENT>0001752724-20-021317-index.html : 20200212
<SEC-HEADER>0001752724-20-021317.hdr.sgml : 20200212
<ACCEPTANCE-DATETIME>20200212120706
ACCESSION NUMBER:		0001752724-20-021317
CONFORMED SUBMISSION TYPE:	N-CEN
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20191130
FILED AS OF DATE:		20200212
DATE AS OF CHANGE:		20200212
EFFECTIVENESS DATE:		20200212

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:		N-CEN
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-03583
		FILM NUMBER:		20602384

	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>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000707823
<SERIES-ID>S000007118
<SERIES-NAME>Fidelity Growth Strategies Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000019447
<CLASS-CONTRACT-NAME>Fidelity Growth Strategies Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FDEGX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000064241
<CLASS-CONTRACT-NAME>Class K
<CLASS-CONTRACT-TICKER-SYMBOL>FAGKX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000707823
<SERIES-ID>S000007119
<SERIES-NAME>Fidelity Growth Company Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000019448
<CLASS-CONTRACT-NAME>Fidelity Growth Company Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FDGRX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000064242
<CLASS-CONTRACT-NAME>Class K
<CLASS-CONTRACT-TICKER-SYMBOL>FGCKX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000707823
<SERIES-ID>S000007120
<SERIES-NAME>Fidelity New Millennium Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000019449
<CLASS-CONTRACT-NAME>Fidelity New Millennium Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FMILX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000707823
<SERIES-ID>S000042626
<SERIES-NAME>Fidelity Series Growth Company Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000131783
<CLASS-CONTRACT-NAME>Fidelity Series Growth Company Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FCGSX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000707823
<SERIES-ID>S000056370
<SERIES-NAME>Fidelity Flex Mid Cap Growth Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000177597
<CLASS-CONTRACT-NAME>Fidelity Flex Mid Cap Growth Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FFMGX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000707823
<SERIES-ID>S000057290
<SERIES-NAME>Fidelity Growth Strategies K6 Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000182866
<CLASS-CONTRACT-NAME>Fidelity Growth Strategies K6 Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FSKGX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000707823
<SERIES-ID>S000065696
<SERIES-NAME>Fidelity Growth Company K6 Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000212499
<CLASS-CONTRACT-NAME>Fidelity Growth Company K6 Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FGKFX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CEN
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>INTERNAL CONTROL RPT
<SEQUENCE>2
<FILENAME>Mt._Vrnn_Strt_Trst_2.htm
<TEXT>
Document 2 - file: Mt._Vrnn_Strt_Trst_2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>INTERNAL CONTROL RPT
<SEQUENCE>3
<FILENAME>Mt._Vrnn_Strt_Trst_1.htm
<TEXT>
Document 3 - file: Mt._Vrnn_Strt_Trst_1.htm

</DOCUMENT>
</SEC-DOCUMENT>