<SEC-DOCUMENT>0001193125-20-243715-index.html : 20200911
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<ACCEPTANCE-DATETIME>20200911075135
ACCESSION NUMBER:		0001193125-20-243715
CONFORMED SUBMISSION TYPE:	497
PUBLIC DOCUMENT COUNT:		15
FILED AS OF DATE:		20200911
DATE AS OF CHANGE:		20200911
EFFECTIVENESS DATE:		20200911

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)
		CENTRAL INDEX KEY:			0000810902
		IRS NUMBER:				136891420
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		497
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	033-12112
		FILM NUMBER:		201169959

	BUSINESS ADDRESS:	
		STREET 1:		767 FIFTH AVE
		STREET 2:		49TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10153
		BUSINESS PHONE:		2125832000

	MAIL ADDRESS:	
		STREET 1:		767 FIFTH AVE
		STREET 2:		49TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10153

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BARON ASSET FUND
		DATE OF NAME CHANGE:	19920703
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<OWNER-CIK>0000810902
<SERIES-ID>S000042178
<SERIES-NAME>BARON DISCOVERY FUND
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<CLASS-CONTRACT-ID>C000130959
<CLASS-CONTRACT-NAME>BARON DISCOVERY FUND
<CLASS-CONTRACT-TICKER-SYMBOL>BDFFX
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<CLASS-CONTRACT-ID>C000130960
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<CLASS-CONTRACT-ID>C000174754
<CLASS-CONTRACT-NAME>R6 Shares
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<DESCRIPTION>BARON DISCOVERY FUND
<TEXT>
Document 1 - file: d88837d497.htm

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<TYPE>EX-101.INS
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Document 2 - file: bift-20200820.xml

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Document 12 - file: Financial_Report.xlsx

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Document 15 - file: FilingSummary.html

Document 15 - RAW XML: FilingSummary.xml

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