First Trust NASDAQ® Clean Edge® Green Energy Index Fund (QCLN)

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Holdings

Holdings of the Fund as of 5/7/2021
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Total Number of Holdings (excluding cash): 53

Security Name	Identifier	CUSIP	Classification	Shares / Quantity	Market Value	Weighting
Tesla, Inc.	TSLA	88160R101	Automobiles	346,199	$232,773,821.63	9.62%
NIO Inc. (ADR)	NIO	62914V106	Automobiles	5,108,304	$188,700,749.76	7.80%
Albemarle Corporation	ALB	012653101	Chemicals: Diversified	1,028,357	$167,334,251.04	6.91%
Enphase Energy, Inc.	ENPH	29355A107	Renewable Energy Equipment	1,137,584	$139,877,328.64	5.78%
ON Semiconductor Corporation	ON	682189105	Semiconductors	2,903,628	$112,167,149.64	4.63%
Plug Power Inc.	PLUG	72919P202	Renewable Energy Equipment	4,430,703	$102,127,704.15	4.22%
Cree, Inc.	CREE	225447101	Semiconductors	1,008,269	$96,471,177.92	3.99%
Universal Display Corporation	OLED	91347P105	Electronic Components	427,855	$94,680,032.95	3.91%
Brookfield Renewable Partners LP	BEP	G16258108	Alternative Electricity	2,496,151	$92,482,394.55	3.82%
SolarEdge Technologies, Inc.	SEDG	83417M104	Renewable Energy Equipment	391,973	$86,390,849.20	3.57%
Sunrun Inc.	RUN	86771W105	Alternative Electricity	1,839,914	$83,973,674.96	3.47%
First Solar, Inc.	FSLR	336433107	Renewable Energy Equipment	962,594	$71,828,764.28	2.97%
Acuity Brands, Inc.	AYI	00508Y102	Building Materials: Other	327,213	$62,707,099.32	2.59%
Littelfuse, Inc.	LFUS	537008104	Electrical Components	222,853	$58,904,504.96	2.43%
NextEra Energy Partners, LP	NEP	65341B106	Alternative Electricity	689,097	$46,989,524.43	1.94%
Power Integrations, Inc.	POWI	739276103	Semiconductors	545,419	$44,986,159.12	1.86%
Ballard Power Systems Inc.	BLDP	058586108	Alternative Fuels	2,698,172	$41,551,848.80	1.72%
XPeng Inc. (ADR)	XPEV	98422D105	Automobiles	1,543,014	$41,183,043.66	1.70%
Daqo New Energy Corporation (ADR)	DQ	23703Q203	Specialty Chemicals	529,518	$39,554,994.60	1.63%
Atlantica Sustainable Infrastructure Plc	AY	G0751N103	Alternative Electricity	1,005,331	$36,242,182.55	1.50%
SunPower Corporation	SPWR	867652406	Renewable Energy Equipment	1,549,037	$36,200,994.69	1.50%
Itron, Inc.	ITRI	465741106	Electronic Equipment: Gauges and Meters	409,812	$35,813,470.68	1.48%
EnerSys	ENS	29275Y102	Electrical Components	387,689	$35,337,852.35	1.46%
Ormat Technologies, Inc.	ORA	686688102	Alternative Electricity	508,450	$35,352,528.50	1.46%
Hannon Armstrong Sustainable Infrastructure Capital, Inc.	HASI	41068X100	Infrastructure REITs	709,806	$34,063,589.94	1.41%
Advanced Energy Industries, Inc.	AEIS	007973100	Semiconductors	347,852	$31,348,422.24	1.30%
Sunnova Energy International Inc.	NOVA	86745K104	Alternative Electricity	981,485	$31,230,852.70	1.29%
Bloom Energy Corporation (Class A)	BE	093712107	Machinery: Specialty	1,308,154	$30,388,417.42	1.26%
Array Technologies, Inc.	ARRY	04271T100	Renewable Energy Equipment	1,153,397	$29,250,147.92	1.21%
Sociedad Quimica y Minera de Chile S.A. (ADR)	SQM	833635105	Chemicals: Diversified	461,310	$25,381,276.20	1.05%
Renewable Energy Group, Inc.	REGI	75972A301	Alternative Fuels	411,529	$24,913,965.66	1.03%
Vicor Corporation	VICR	925815102	Electrical Components	286,239	$24,831,233.25	1.03%
Livent Corporation	LTHM	53814L108	Specialty Chemicals	1,329,306	$24,126,903.90	1.00%
FuelCell Energy, Inc.	FCEL	35952H601	Renewable Energy Equipment	2,928,253	$23,953,109.54	0.99%
Canadian Solar Inc.	CSIQ	136635109	Renewable Energy Equipment	536,234	$21,250,953.42	0.88%
Clearway Energy Inc. (Class C)	CWEN	18539C204	Alternative Electricity	740,744	$19,755,642.48	0.82%
Ameresco, Inc. (Class A)	AMRC	02361E108	Renewable Energy Equipment	302,312	$16,022,536.00	0.66%
TPI Composites, Inc.	TPIC	87266J104	Renewable Energy Equipment	332,074	$15,979,400.88	0.66%
Blink Charging Co.	BLNK	09354A100	Auto Services	375,544	$12,231,468.08	0.51%
JinkoSolar Holding Company Ltd. (ADR)	JKS	47759T100	Renewable Energy Equipment	357,379	$11,582,653.39	0.48%
Niu Technologies (ADR)	NIU	65481N100	Recreational Vehicles and Boats	372,064	$11,690,250.88	0.48%
Workhorse Group Inc.	WKHS	98138J206	Commercial Vehicles and Parts	1,094,678	$10,552,695.92	0.44%
Azure Power Global Limited	AZRE	V0393H103	Alternative Electricity	432,771	$9,300,248.79	0.38%
Maxeon Solar Technologies, Ltd.	MAXN	Y58473102	Renewable Energy Equipment	304,232	$5,016,785.68	0.21%
American Superconductor Corporation	AMSC	030111207	Renewable Energy Equipment	250,505	$3,755,069.95	0.16%
CBAK Energy Technology, Inc.	CBAT	14986C102	Electrical Components	800,204	$3,304,842.52	0.14%
GreenPower Motor Company Inc.	GP	39540E302	Commercial Vehicles and Parts	188,646	$3,103,226.70	0.13%
Infrastructure and Energy Alternatives, Inc.	IEA	45686J104	Engineering and Contracting Services	206,982	$2,622,461.94	0.11%
O2Micro International Limited (ADR)	OIIM	67107W100	Semiconductors	303,098	$2,197,460.50	0.09%
LSI Industries Inc.	LYTS	50216C108	Building Materials: Other	240,099	$1,887,178.14	0.08%
ReneSola Ltd. (ADR)	SOL	75971T301	Renewable Energy Equipment	238,116	$1,973,981.64	0.08%
US Dollar	$USD		Other	2,056,865	$2,056,864.81	0.08%
Orion Energy Systems, Inc.	OESX	686275108	Building Materials: Other	279,373	$1,578,457.45	0.07%
Flux Power Holdings, Inc.	FLUX	344057302	Electronic Components	114,375	$1,094,568.75	0.05%

Holdings are subject to change.

The holdings information set forth above for the date indicated reflects creation and redemption transactions from the prior business day and may differ from the holdings information currently available from the Fund's custodian and accounting agent. With respect to the market value of the Fund's holdings set forth above, the pricing sources are generally third party vendors. The Fund ultimately relies on pricing information provided by the Fund's accounting agent.