<SEC-DOCUMENT>0001445546-17-005268-index.html : 20171128
<SEC-HEADER>0001445546-17-005268.hdr.sgml : 20171128
<ACCEPTANCE-DATETIME>20171128130403
ACCESSION NUMBER:		0001445546-17-005268
CONFORMED SUBMISSION TYPE:	485BPOS
PUBLIC DOCUMENT COUNT:		30
FILED AS OF DATE:		20171128
DATE AS OF CHANGE:		20171128
EFFECTIVENESS DATE:		20171201

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIRST TRUST EXCHANGE-TRADED ALPHADEX FUND
		CENTRAL INDEX KEY:			0001383496
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MA

	FILING VALUES:
		FORM TYPE:		485BPOS
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-140895
		FILM NUMBER:		171224919

	BUSINESS ADDRESS:	
		STREET 1:		120 EAST LIBERTY DRIVE, SUITE 400
		CITY:			WHEATON
		STATE:			IL
		ZIP:			60187
		BUSINESS PHONE:		630-765-8000

	MAIL ADDRESS:	
		STREET 1:		120 EAST LIBERTY DRIVE, SUITE 400
		CITY:			WHEATON
		STATE:			IL
		ZIP:			60187

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIRST TRUST EXCHANGE-TRADED ALPHADEX FUND
		CENTRAL INDEX KEY:			0001383496
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MA

	FILING VALUES:
		FORM TYPE:		485BPOS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-22019
		FILM NUMBER:		171224920

	BUSINESS ADDRESS:	
		STREET 1:		120 EAST LIBERTY DRIVE, SUITE 400
		CITY:			WHEATON
		STATE:			IL
		ZIP:			60187
		BUSINESS PHONE:		630-765-8000

	MAIL ADDRESS:	
		STREET 1:		120 EAST LIBERTY DRIVE, SUITE 400
		CITY:			WHEATON
		STATE:			IL
		ZIP:			60187
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017337
<SERIES-NAME>First Trust Large Cap Core AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000047995
<CLASS-CONTRACT-NAME>First Trust Large Cap Core AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FEX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017338
<SERIES-NAME>First Trust Mid Cap Core AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000047996
<CLASS-CONTRACT-NAME>First Trust Mid Cap Core AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FNX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017339
<SERIES-NAME>First Trust Small Cap Core AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000047997
<CLASS-CONTRACT-NAME>First Trust Small Cap Core AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FYX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017340
<SERIES-NAME>First Trust Large Cap Value AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000047998
<CLASS-CONTRACT-NAME>First Trust Large Cap Value Opportunities AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FTA
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017341
<SERIES-NAME>First Trust Large Cap Growth AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000047999
<CLASS-CONTRACT-NAME>First Trust Large Cap Growth AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FTC
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017342
<SERIES-NAME>First Trust Multi Cap Value AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000048000
<CLASS-CONTRACT-NAME>First Trust Multi Cap Value AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FAB
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017343
<SERIES-NAME>First Trust Multi Cap Growth AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000048001
<CLASS-CONTRACT-NAME>First Trust Multi Cap Growth AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FAD
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017696
<SERIES-NAME>First Trust Consumer Discretionary AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000048896
<CLASS-CONTRACT-NAME>First Trust Consumer Discretionary AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FXD
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017697
<SERIES-NAME>First Trust Consumer Staples AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000048897
<CLASS-CONTRACT-NAME>First Trust Consumer Staples AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FXG
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017698
<SERIES-NAME>First Trust Energy AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000048898
<CLASS-CONTRACT-NAME>First Trust Energy AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FXN
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017699
<SERIES-NAME>First Trust Financials AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000048899
<CLASS-CONTRACT-NAME>First Trust Financials AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FXO
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017700
<SERIES-NAME>First Trust Health Care AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000048900
<CLASS-CONTRACT-NAME>First Trust Health Care AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FXH
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017701
<SERIES-NAME>First Trust Industrials/Producer Durables AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000048901
<CLASS-CONTRACT-NAME>First Trust Industrials/Producer Durables AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FXR
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017702
<SERIES-NAME>First Trust Materials AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000048902
<CLASS-CONTRACT-NAME>First Trust Materials AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FXZ
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017703
<SERIES-NAME>First Trust Technology AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000048903
<CLASS-CONTRACT-NAME>First Trust Technology AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FXL
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000017704
<SERIES-NAME>First Trust Utilities AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000048904
<CLASS-CONTRACT-NAME>First Trust Utilities AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FXU
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000031804
<SERIES-NAME>First Trust Mid Cap Growth AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000099059
<CLASS-CONTRACT-NAME>First Trust Mid Cap Growth AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FNY
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000031805
<SERIES-NAME>First Trust Mid Cap Value AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000099060
<CLASS-CONTRACT-NAME>First Trust Mid Cap Value AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FNK
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000031806
<SERIES-NAME>First Trust Small Cap Growth AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000099061
<CLASS-CONTRACT-NAME>First Trust Small Cap Growth AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FYC
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000031807
<SERIES-NAME>First Trust Small Cap Value AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000099062
<CLASS-CONTRACT-NAME>First Trust Small Cap Value AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FYT
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0001383496
<SERIES-ID>S000032963
<SERIES-NAME>First Trust Mega Cap AlphaDEX Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000101702
<CLASS-CONTRACT-NAME>First Trust Mega Cap AlphaDEX Fund
<CLASS-CONTRACT-TICKER-SYMBOL>FMK
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>485BPOS
<SEQUENCE>1
<FILENAME>adex_485b.htm
<DESCRIPTION>POST-EFFECTIVE AMENDMENT
<TEXT>
Document 1 - file: adex_485b.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.A CHARTER <SEQUENCE>2 <FILENAME>exhibit_a2.txt <DESCRIPTION>AMENDED AND RESTATED DECLARATION OF TRUST <TEXT> Document 2 - file: exhibit_a2.txt
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.C HOLDERS RTS <SEQUENCE>3 <FILENAME>exhibit_d4.txt <DESCRIPTION>EXHIBIT A TO EXPENSE REIMBURSEMENT, FEE WAIVER AND RECOVERY AGREEMENT <TEXT> Document 3 - file: exhibit_d4.txt
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.J OTHER OPININ <SEQUENCE>4 <FILENAME>exhibit_j.txt <DESCRIPTION>CONSENT OF DELOITTE AND TOUCHE LLP <TEXT> Document 4 - file: exhibit_j.txt
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.M 12B-1 PLAN <SEQUENCE>5 <FILENAME>exhibit_m2.txt <DESCRIPTION>12B-1 PLAN EXTENSION LETTER AGREEMENT <TEXT> Document 5 - file: exhibit_m2.txt
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>7 <FILENAME>img0daaebaa14.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 7 - file: img0daaebaa14.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>img110998ba18.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: img110998ba18.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>img19facb9a8.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: img19facb9a8.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>img21fe12a24.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 10 - file: img21fe12a24.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>img2d91e0ed12.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 11 - file: img2d91e0ed12.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>12 <FILENAME>img302ce0d922.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 12 - file: img302ce0d922.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>13 <FILENAME>img532740aa6.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 13 - file: img532740aa6.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>14 <FILENAME>img5ba293e09.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 14 - file: img5ba293e09.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>15 <FILENAME>img6a4399777.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 15 - file: img6a4399777.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>16 <FILENAME>img6dbc325d19.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 16 - file: img6dbc325d19.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>17 <FILENAME>img73c9898310.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 17 - file: img73c9898310.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>18 <FILENAME>img73cb3e395.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 18 - file: img73cb3e395.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>19 <FILENAME>img742a6a9d11.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 19 - file: img742a6a9d11.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>20 <FILENAME>img85eca9d43.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 20 - file: img85eca9d43.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>21 <FILENAME>img8ef9a3972.gif <DESCRIPTION>GRAPHIC <TEXT> Document 21 - file: img8ef9a3972.gif
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>22 <FILENAME>img8ffa41dc17.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 22 - file: img8ffa41dc17.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>23 <FILENAME>img9bd424881.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 23 - file: img9bd424881.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>24 <FILENAME>imgac9c9e7723.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 24 - file: imgac9c9e7723.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>25 <FILENAME>imgad16daf020.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 25 - file: imgad16daf020.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>26 <FILENAME>imgafbaeeac13.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 26 - file: imgafbaeeac13.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>27 <FILENAME>imgbf48acc416.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 27 - file: imgbf48acc416.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>28 <FILENAME>imge7b737da21.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 28 - file: imge7b737da21.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>29 <FILENAME>imge90852521.gif <DESCRIPTION>GRAPHIC <TEXT> Document 29 - file: imge90852521.gif
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>30 <FILENAME>imgec64cb1a15.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 30 - file: imgec64cb1a15.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>31 <FILENAME>smalllogo_color.gif <DESCRIPTION>GRAPHIC <TEXT> Document 31 - file: smalllogo_color.gif
</DOCUMENT> </SEC-DOCUMENT>