<SEC-DOCUMENT>0001193125-16-441647-index.html : 20160128
<SEC-HEADER>0001193125-16-441647.hdr.sgml : 20160128
<ACCEPTANCE-DATETIME>20160128150202
ACCESSION NUMBER:		0001193125-16-441647
CONFORMED SUBMISSION TYPE:	485BPOS
PUBLIC DOCUMENT COUNT:		20
FILED AS OF DATE:		20160128
DATE AS OF CHANGE:		20160128
EFFECTIVENESS DATE:		20160128

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:		485BPOS
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	033-12112
		FILM NUMBER:		161368229

	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

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:		485BPOS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-05032
		FILM NUMBER:		161368230

	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
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000810902
<SERIES-ID>S000000582
<SERIES-NAME>BARON ASSET FUND
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000001635
<CLASS-CONTRACT-NAME>BARON ASSET FUND
<CLASS-CONTRACT-TICKER-SYMBOL>BARAX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000077818
<CLASS-CONTRACT-NAME>Institutional Shares
<CLASS-CONTRACT-TICKER-SYMBOL>BARIX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000165210
<CLASS-CONTRACT-NAME>Class R6
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000810902
<SERIES-ID>S000000583
<SERIES-NAME>BARON GROWTH FUND
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000001636
<CLASS-CONTRACT-NAME>BARON GROWTH FUND
<CLASS-CONTRACT-TICKER-SYMBOL>BGRFX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000077819
<CLASS-CONTRACT-NAME>Institutional Shares
<CLASS-CONTRACT-TICKER-SYMBOL>BGRIX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000165211
<CLASS-CONTRACT-NAME>Class R6
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000810902
<SERIES-ID>S000000584
<SERIES-NAME>BARON SMALL CAP FUND
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000001637
<CLASS-CONTRACT-NAME>BARON SMALL CAP FUND
<CLASS-CONTRACT-TICKER-SYMBOL>BSCFX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000077820
<CLASS-CONTRACT-NAME>Institutional Shares
<CLASS-CONTRACT-TICKER-SYMBOL>BSFIX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000165212
<CLASS-CONTRACT-NAME>Class R6
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000810902
<SERIES-ID>S000000585
<SERIES-NAME>BARON OPPORTUNITY FUND
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000001638
<CLASS-CONTRACT-NAME>BARON OPPORTUNITY FUND
<CLASS-CONTRACT-TICKER-SYMBOL>BIOPX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000077821
<CLASS-CONTRACT-NAME>Institutional Shares
<CLASS-CONTRACT-TICKER-SYMBOL>BIOIX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000810902
<SERIES-ID>S000000586
<SERIES-NAME>BARON FIFTH AVENUE GROWTH FUND
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000001639
<CLASS-CONTRACT-NAME>BARON FIFTH AVENUE GROWTH FUND
<CLASS-CONTRACT-TICKER-SYMBOL>BFTHX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000077822
<CLASS-CONTRACT-NAME>Institutional Shares
<CLASS-CONTRACT-TICKER-SYMBOL>BFTIX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000165213
<CLASS-CONTRACT-NAME>Class R6
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000810902
<SERIES-ID>S000042178
<SERIES-NAME>BARON DISCOVERY FUND
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000130959
<CLASS-CONTRACT-NAME>BARON DISCOVERY FUND
<CLASS-CONTRACT-TICKER-SYMBOL>BDFFX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000130960
<CLASS-CONTRACT-NAME>Institutional Shares
<CLASS-CONTRACT-TICKER-SYMBOL>BDFIX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>485BPOS
<SEQUENCE>1
<FILENAME>d65657d485bpos.htm
<DESCRIPTION>BARON INVESTMENT FUNDS TRUST
<TEXT>
Document 1 - file: d65657d485bpos.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.D7
<SEQUENCE>2
<FILENAME>d65657dex99d7.htm
<DESCRIPTION>FEE WAIVER AGREEMENT
<TEXT>
Document 2 - file: d65657dex99d7.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.D8
<SEQUENCE>3
<FILENAME>d65657dex99d8.htm
<DESCRIPTION>AMENDMENT AND RESTATED SCHEDULE A
<TEXT>
Document 3 - file: d65657dex99d8.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.G4
<SEQUENCE>4
<FILENAME>d65657dex99g4.htm
<DESCRIPTION>AMENDMENT TO ADMINISTRATIVE AGREEMENT
<TEXT>
Document 4 - file: d65657dex99g4.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.G5
<SEQUENCE>5
<FILENAME>d65657dex99g5.htm
<DESCRIPTION>FEE SCHEDULE
<TEXT>
Document 5 - file: d65657dex99g5.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.H10
<SEQUENCE>6
<FILENAME>d65657dex99h10.htm
<DESCRIPTION>FIRST AMENDMENT TO COMMITTED LINE OF CREDIT
<TEXT>
Document 6 - file: d65657dex99h10.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.I2
<SEQUENCE>7
<FILENAME>d65657dex99i2.htm
<DESCRIPTION>OPINION AND CONSENT OF COUNSEL
<TEXT>
Document 7 - file: d65657dex99i2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.J
<SEQUENCE>8
<FILENAME>d65657dex99j.htm
<DESCRIPTION>CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
<TEXT>
Document 8 - file: d65657dex99j.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.N
<SEQUENCE>9
<FILENAME>d65657dex99n.htm
<DESCRIPTION>MULTI-CLASS PLAN ADOPTED PURSUANT TO RULE 18F-3
<TEXT>
Document 9 - file: d65657dex99n.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.P
<SEQUENCE>10
<FILENAME>d65657dex99p.htm
<DESCRIPTION>AMENDED AND RESTATED CODE OF ETHICS
<TEXT>
Document 10 - file: d65657dex99p.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g6565715.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: g6565715.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>g65657g04p98.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: g65657g04p98.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>g65657g05r67.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: g65657g05r67.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>g65657g08r73.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: g65657g08r73.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>g65657g10z35.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 16 - file: g65657g10z35.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>g65657g18x17.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 17 - file: g65657g18x17.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>g65657g43u15.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 18 - file: g65657g43u15.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>g65657g55o83.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 19 - file: g65657g55o83.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>g65657g55w27.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 20 - file: g65657g55w27.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>21
<FILENAME>g65657g64n58.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 21 - file: g65657g64n58.jpg

</DOCUMENT>
</SEC-DOCUMENT>