First Trust Income Opportunities ETF (FCEF)
Portfolio of Investments
May 31, 2025 (Unaudited)
Shares
Description
Value
CLOSED-END FUNDS — 94.3%
Capital Markets — 94.3%
79,337
abrdn Global Infrastructure
Income Fund
$1,543,105
62,403
abrdn Healthcare Investors
949,774
73,894
abrdn Healthcare Opportunities
Fund
1,352,999
35,321
abrdn Life Sciences Investors
432,329
31,911
Adams Natural Resources Fund,
Inc.
640,773
66,318
Angel Oak Financial Strategies
Income Term Trust
858,155
58,630
BlackRock Capital Allocation
Term Trust
873,001
41,703
BlackRock Credit Allocation
Income Trust
447,473
33,955
BlackRock Enhanced Large Cap
Core Fund, Inc.
693,021
8,586
BlackRock Health
Sciences Trust
308,323
23,030
BlackRock Multi-Sector Income
Trust
327,717
34,633
BlackRock Resources &
Commodities Strategy Trust
319,663
35,204
BlackRock Science &
Technology Trust
1,283,538
12,139
BlackRock Utilities
Infrastructure & Power
Opportunities Trust
293,157
37,412
Blackstone Strategic Credit 2027
Term Fund
447,073
60,315
Brookfield Real Assets Income
Fund, Inc.
780,476
19,194
Central Securities Corp.
891,945
9,550
ClearBridge Energy Midstream
Opportunity Fund, Inc.
442,451
43,665
Cohen & Steers Infrastructure
Fund, Inc.
1,144,460
52,230
Cohen & Steers REIT and
Preferred and Income Fund,
Inc.
1,135,480
5,737
DoubleLine Yield Opportunities
Fund
90,071
36,873
Duff & Phelps Utility and
Infrastructure Fund, Inc.
452,063
50,745
Eaton Vance Short Duration
Diversified Income Fund
547,539
61,484
Eaton Vance Tax-Advantaged
Dividend Income Fund
1,428,888
91,419
Eaton Vance Tax-Advantaged
Global Dividend Income Fund
1,830,208
56,350
Eaton Vance Tax-Advantaged
Global Dividend
Opportunities Fund
1,466,790
Shares
Description
Value
 
Capital Markets (Continued)
192,125
FS Credit Opportunities Corp.
$1,387,142
54,161
Gabelli Dividend & Income
(The) Trust
1,345,359
17,274
General American Investors Co.,
Inc.
931,587
62,098
John Hancock Tax-Advantaged
Dividend Income Fund
1,431,980
45,379
Kayne Anderson Energy
Infrastructure Fund
551,809
144,026
Nuveen Credit Strategies Income
Fund
753,256
40,291
Nuveen Floating Rate Income
Fund
333,207
12,120
Nuveen Mortgage and Income
Fund
220,099
35,165
Nuveen Multi-Asset Income
Fund
435,343
17,810
Nuveen NASDAQ 100 Dynamic
Overwrite Fund
449,524
140,384
Nuveen Preferred & Income
Opportunities Fund
1,107,630
52,179
Nuveen Real Asset Income and
Growth Fund
675,196
28,709
Nuveen Taxable Municipal
Income Fund
449,870
52,794
Nuveen Variable Rate Preferred
& Income Fund
995,695
82,581
PGIM Global High Yield Fund,
Inc.
1,092,547
14,389
PIMCO Access Income Fund
216,123
65,132
PIMCO Dynamic Income
Opportunities Fund
873,420
34,816
PIMCO Dynamic Income
Strategy Fund
809,472
24,510
Reaves Utility Income Fund
848,046
24,705
Royce Micro-Cap Trust, Inc.
216,169
52,241
Royce Small-Cap Trust, Inc.
776,301
33,831
Source Capital, Inc.
1,439,746
38,360
Tri-Continental Corp.
1,196,448
20,526
Virtus Artificial Intelligence &
Technology Opportunities
Fund
485,440
66,821
Western Asset Diversified
Income Fund
982,269
85,715
Western Asset High Income
Opportunity Fund, Inc.
332,574
102,439
Western Asset Inflation-Linked
Opportunities & Income Fund
877,902
Total Closed-End Funds
42,194,626
(Cost $42,229,324)

First Trust Income Opportunities ETF (FCEF)
Portfolio of Investments (Continued)
May 31, 2025 (Unaudited)
Shares
Description
Value
EXCHANGE-TRADED FUNDS — 3.9%
Capital Markets — 3.9%
66,401
Invesco Variable Rate
Investment Grade ETF
$1,662,681
5,065
Tortoise Essential Energy Fund
100,034
Total Exchange-Traded Funds
1,762,715
(Cost $1,733,475)
MONEY MARKET FUNDS — 1.6%
703,643
Morgan Stanley Institutional
Liquidity Funds - Treasury
Portfolio - Institutional Class -
4.16% (a)
703,643
(Cost $703,643)
Total Investments — 99.8%
44,660,984
(Cost $44,666,442)
Net Other Assets and
Liabilities — 0.2%
97,759
Net Assets — 100.0%
$44,758,743
(a)
Rate shown reflects yield as of May 31, 2025.

Valuation Inputs
A summary of the inputs used to value the Fund’s investments as of May 31, 2025 is as follows (see Valuation Inputs in the Additional Information section):
 
Total
Value at
5/31/2025
Level 1
Quoted
Prices
Level 2
Significant
Observable
Inputs
Level 3
Significant
Unobservable
Inputs
Closed-End Funds*
$42,194,626
$42,194,626
$
$
Exchange-Traded
Funds*
1,762,715
1,762,715
Money Market Funds
   703,643
   703,643
Total Investments
$44,660,984
$44,660,984
$
$
*
See Portfolio of Investments for industry breakout.

First Trust Flexible Municipal High Income ETF (MFLX)
Portfolio of Investments
May 31, 2025 (Unaudited)
Principal
Value
Description
Stated
Coupon
Stated
Maturity
Value
MUNICIPAL BONDS — 90.3%
Alabama — 5.1%
$250,000
Black Belt Energy Gas Dist AL Gas Proj Rev Bonds Proj No 7, Ser
C-1 (Mandatory put 12/01/26)
4.00%
10/01/52
$249,789
450,000
Jefferson Cnty AL Swr Rev Warrants Ref Warrants
5.25%
10/01/42
467,820
 
717,609
Arizona — 3.1%
275,000
AZ St Indl Dev Auth Edu Rev Ref Doral Acdmy of Northern NV
Proj, Ser A (a)
4.00%
07/15/37
239,489
250,000
AZ St Indl Dev Auth Edu Rev Somerset Acdmy of LV Aliante &
Skye Canyon Cmps Proj, Ser A (a)
4.00%
12/15/51
189,624
 
429,113
Arkansas — 0.7%
100,000
AR Dev Fin Auth Envrnmntl Rev Sustainable Bond United States
Steel Corp Proj, AMT
5.45%
09/01/52
99,546
California — 2.9%
225,000
Burbank Glendale Pasadena CA Arpt Auth Arpt Rev Sr, Ser B,
AGM, AMT
4.38%
07/01/49
204,106
250,000
Elk Grove CA Fin Auth Spl Tax Rev CFD #2005-1 Laguna Ridge
4.00%
09/01/50
206,246
 
410,352
Colorado — 3.0%
250,000
CO St Hlth Facs Auth Rev Ref Frasier Proj, Ser 2023A
4.00%
05/15/41
220,306
200,000
Denver City & Cnty CO Spl Facs Arpt Rev Ref United Airls Inc
Proj, AMT
5.00%
10/01/32
199,867
 
420,173
Florida — 11.8%
250,000
Black Creek FL CDD Spl Assmnt Expansion Area Proj
5.13%
06/15/32
258,157
275,000
Capital Projs Fin Auth FL Eductnl Facs Rev Kissimmee Chrt
Acdmy Proj (a)
6.50%
06/15/54
278,498
250,000
Charlotte Cnty FL Indl Dev Auth Util Sys Rev Town & Country
Utils Proj, Ser A, AMT (a)
4.00%
10/01/51
195,811
225,000
Cypress Mill CDD FL Spl Assmnt 2023 Proj
5.00%
05/01/43
220,119
250,000
N Sumter Cnty FL Util Dependent Dist Util Rev Sumter Wtr
Conservation Auth Proj, AGM
4.00%
10/01/41
236,061
250,000
Ridge at Apopka CDD FL Spl Assmnt, Ser 22
5.38%
05/01/42
252,594
250,000
Sawyers Landing CDD FL Spl Assmnt Rev
4.25%
05/01/53
203,242
 
1,644,482
Georgia — 1.8%
250,000
Main Street Nat Gas Inc GA Gas Sply Rev, Ser A (Mandatory put
12/01/29)
4.00%
09/01/52
247,983
Guam — 1.8%
250,000
Guam Govt Busn Privilege Tax Rev Ref, Ser F
5.00%
01/01/28
257,347
Illinois — 3.9%
300,000
Chicago IL Brd of Edu Ref, Ser B
5.00%
12/01/30
309,811
250,000
IL St, Ser A
4.00%
03/01/38
232,931
 
542,742
Indiana — 4.1%
250,000
IN St Fin Auth Hlth Fac Rev Margaret Mary Hlth Proj, Ser A
5.75%
03/01/54
256,852
300,000
Indianapolis IN Loc Pub Impt Bond Bank Sr Convention Ctr
Hotel, Ser E
6.00%
03/01/53
310,908
 
567,760

First Trust Flexible Municipal High Income ETF (MFLX)
Portfolio of Investments (Continued)
May 31, 2025 (Unaudited)
Principal
Value
Description
Stated
Coupon
Stated
Maturity
Value
MUNICIPAL BONDS (Continued)
Iowa — 3.6%
$260,000
Dallas Ctr IA Grimes Cmnty Sch Dist
3.00%
05/01/39
$214,577
250,000
IA St Fin Auth Midwstrn Disaster Area Rev Ref IA Fertilizer
Company Proj (Pre-refunded maturity 12/01/32)
5.00%
12/01/50
281,208
 
495,785
Kansas — 1.8%
250,000
Wyandotte Cnty KS Kansas City Unif Govt Spl Oblg Rev Ref Vlg
E Proj Areas 2B 3 5 (a)
5.75%
09/01/39
255,245
Minnesota — 1.6%
250,000
Rochester MN Hlthcare Facs Rev Mayo Clinic, Ser A
4.25%
11/15/50
229,614
Missouri — 1.6%
250,000
Saint Charles Cnty MO Pub Wtr Sply Dist #2 Pub Wtr Sply Dist
No 2, COPS
4.00%
12/01/44
225,564
Montana — 1.4%
250,000
MT St Brd of Hsg Sf Mtge Ref, Ser A-1
2.80%
12/01/39
197,329
New Hampshire — 2.0%
300,000
NH St Busn Fin Auth Wtr Fac Rev Pennichuck Wtr Wks Inc
Proj, Ser A, AMT
5.38%
04/01/49
284,995
New York — 5.8%
300,000
Dutchess Cnty NY Loc Dev Corp Mf Mtebs Sustainable Bonds
Tomopkins Terrace Hsg LP Proj
5.00%
10/01/40
307,125
250,000
NY St Transprtn Dev Corp Spl Fac Rev Sustainable Bond JFK Intl
Arpt New Terminal, AMT
5.25%
06/30/49
247,453
250,000
Suffolk Regl Off Track Betting Corp NY Rev
5.75%
12/01/44
255,922
 
810,500
North Carolina — 1.6%
250,000
NC St Med Care Commn Hlth Care Facs Rev Lutheran Svcs for the
Aging Ref, Ser A
4.00%
03/01/41
218,473
Ohio — 1.8%
250,000
Columbus OH Regl Arpt Auth Rev Ref John Glenn Columbus Intl
Arpt, Ser A, AMT
5.50%
01/01/55
257,619
Oregon — 1.6%
250,000
Clackamas Cnty OR Hosp Fac Auth Rev Ref Rose Villa Proj, Ser A
5.38%
11/15/55
229,118
Pennsylvania — 1.7%
250,000
Allegheny Cnty PA Hosp Dev Auth Ref Univ Pittsburgh Med
Ctr, Ser A
4.00%
07/15/37
239,110
Puerto Rico — 3.4%
250,000
Puerto Rico Cmwlth Restructured, Ser A1
4.00%
07/01/35
236,163
250,000
Puerto Rico Sales Tax Fing Corp Sales Tax Rev Restructured
Converted, Ser A-2
4.33%
07/01/40
233,202
 
469,365
South Carolina — 5.7%
250,000
Patriots Energy Grp Fing Agy SC Gas Sply Rev Ref Var, Ser B-1
(Mandatory put 03/01/31)
5.25%
02/01/54
264,913
280,000
SC St Jobs Econ Dev Auth Econ Dev Rev Ref The Woodlands at
Furman
4.00%
11/15/32
267,613
250,000
SC St Jobs Econ Dev Auth Hlth Facs Rev Novant Hlth Obligated
Grp, Ser A
5.50%
11/01/50
259,164
 
791,690

First Trust Flexible Municipal High Income ETF (MFLX)
Portfolio of Investments (Continued)
May 31, 2025 (Unaudited)
Principal
Value
Description
Stated
Coupon
Stated
Maturity
Value
MUNICIPAL BONDS (Continued)
Texas — 3.5%
$250,000
Georgetown TX Util Sys Rev, BAM
4.00%
08/15/49
$214,171
250,000
TX St Muni Gas Acq & Sply Corp IV, Ser B (Mandatory put
01/01/34)
5.50%
01/01/54
273,461
 
487,632
Vermont — 2.0%
300,000
VT St Econ Dev Auth Mtge Rev Ref Wake Robin Corp Proj, Ser A
4.00%
05/01/37
275,580
Virginia — 1.8%
250,000
VA St Small Busn Fing Auth Rsdl Fac Care Rev Ref Lifespire of
VA, Ser A
5.50%
12/01/54
252,231
Washington — 4.0%
300,000
Skagit Cnty WA Pub Hosp Dist #1
5.50%
12/01/54
305,044
250,000
WA St Hsg Fin Commn Nonprofit Rev Radford Court & Nordheim
Court Portfolio
5.50%
07/01/59
253,314
 
558,358
Wisconsin — 7.2%
250,000
Pub Fin Auth WI Chrt Sch Rev Founders of Acdmy Las Vegas
Proj, Ser A (a)
5.00%
07/01/55
203,141
250,000
Pub Fin Auth WI Stdt Hsg Rev Ref Cmps Real Estate Holding
Corp LLC Proj, Ser A
5.50%
06/01/55
246,265
255,000
Pub Fin Auth WI Stdt Hsg Rev Sr KSU Bixby Real Estate
Fdtn LLC Proj, Ser A
5.25%
06/15/55
253,718
300,000
Pub Fin Auth WI Tax Incr Rev Miami Worldcenter Proj, Ser A (a)
5.00%
06/01/41
295,432
 
998,556
Total Municipal Bonds
12,613,871
(Cost $12,661,200)
Shares
Description
Value
CLOSED-END FUNDS — 7.8%
Capital Markets — 7.8%
1,619
BlackRock Municipal Income Quality Trust
16,967
4,815
BlackRock Municipal Income Trust
46,176
10,508
BlackRock Municipal Income Trust II
105,185
2,770
BlackRock MuniHoldings Fund, Inc.
30,941
4,621
BlackRock MuniYield Quality Fund II, Inc.
44,177
6,499
BlackRock MuniYield Quality Fund III, Inc.
67,784
1,838
BlackRock MuniYield Quality Fund, Inc.
20,255
5,360
Eaton Vance Municipal Income Trust
54,940
3,721
Invesco Municipal Trust
34,494
7,436
Invesco Quality Municipal Income Trust
69,750
7,822
Invesco Trust for Investment Grade Municipals
75,639
9,457
Nuveen AMT-Free Municipal Credit Income Fund
112,727
14,622
Nuveen AMT-Free Quality Municipal Income Fund
158,795
6,626
Nuveen Municipal Credit Income Fund
78,717

First Trust Flexible Municipal High Income ETF (MFLX)
Portfolio of Investments (Continued)
May 31, 2025 (Unaudited)
Shares
Description
Value
CLOSED-END FUNDS (Continued)
Capital Markets (Continued)
6,468
Nuveen Quality Municipal Income Fund
$72,700
10,832
Western Asset Managed Municipals Fund, Inc.
107,345
Total Closed-End Funds
1,096,592
(Cost $1,223,149)
Total Investments — 98.1%
13,710,463
(Cost $13,884,349)
Net Other Assets and Liabilities — 1.9%
259,913
Net Assets — 100.0%
$13,970,376
(a)
This security, sold within the terms of a private placement memorandum, is exempt from registration upon resale under
Rule 144A of the Securities Act of 1933, as amended, and may be resold in transactions exempt from registration, normally to
qualified institutional buyers. Pursuant to procedures adopted by the Trust’s Board of Trustees, this security has been determined
to be liquid by First Trust Advisors L.P., the Fund’s advisor. Although market instability can result in periods of increased overall
market illiquidity, liquidity for each security is determined based on security specific factors and assumptions, which require
subjective judgment. At May 31, 2025, securities noted as such amounted to $1,657,240 or 11.9% of net assets.
Abbreviations throughout the Portfolio of Investments:
AGM
Assured Guaranty Municipal Corp.
AMT
Alternative Minimum Tax
BAM
Build America Mutual
COPS
Certificates of Participation

Valuation Inputs
A summary of the inputs used to value the Fund’s investments as of May 31, 2025 is as follows (see Valuation Inputs in the Additional Information section):
 
Total
Value at
5/31/2025
Level 1
Quoted
Prices
Level 2
Significant
Observable
Inputs
Level 3
Significant
Unobservable
Inputs
Municipal Bonds*
$12,613,871
$
$12,613,871
$
Closed-End Funds**
1,096,592
1,096,592
Total Investments
$13,710,463
$1,096,592
$12,613,871
$
*
See Portfolio of Investments for state and territory breakout.
**
See Portfolio of Investments for industry breakout.

First Trust Low Duration Strategic Focus ETF (LDSF)
Portfolio of Investments
May 31, 2025 (Unaudited)
Shares
Description
Value
EXCHANGE-TRADED FUNDS — 99.9%
Capital Markets (a) — 99.9%
176,341
First Trust Core Investment
Grade ETF
$3,662,603
123,634
First Trust Enhanced Short
Maturity ETF
7,393,313
164,923
First Trust Institutional Preferred
Securities and Income ETF
3,084,060
2,280,230
First Trust Limited Duration
Investment Grade Corporate
ETF
43,301,568
878,118
First Trust Low Duration
Opportunities ETF
42,939,970
216,059
First Trust Senior Loan Fund
9,895,502
315,914
First Trust Tactical High Yield
ETF
13,059,885
Total Exchange-Traded Funds
123,336,901
(Cost $125,190,060)
MONEY MARKET FUNDS — 0.1%
151,343
Morgan Stanley Institutional
Liquidity Funds - Treasury
Portfolio - Institutional Class -
4.16% (b)
151,343
(Cost $151,343)
Total Investments — 100.0%
123,488,244
(Cost $125,341,403)
Net Other Assets and
Liabilities — 0.0%
7,788
Net Assets — 100.0%
$123,496,032
(a)
Represents investments in affiliated funds.
(b)
Rate shown reflects yield as of May 31, 2025.

Valuation Inputs
A summary of the inputs used to value the Fund’s investments as of May 31, 2025 is as follows (see Valuation Inputs in the Additional Information section):
 
Total
Value at
5/31/2025
Level 1
Quoted
Prices
Level 2
Significant
Observable
Inputs
Level 3
Significant
Unobservable
Inputs
Exchange-Traded
Funds*
$123,336,901
$123,336,901
$
$
Money Market
Funds
    151,343
    151,343
Total Investments
$123,488,244
$123,488,244
$
$
*
See Portfolio of Investments for industry breakout.

First Trust Low Duration Strategic Focus ETF (LDSF)
Portfolio of Investments (Continued)
May 31, 2025 (Unaudited)

Affiliated Transactions
Amounts relating to investments in affiliated funds at May 31, 2025, and for the fiscal year-to-date period (September 1, 2024 to May 31, 2025) are as follows:
Security Name
Shares at
5/31/2025
Value at
8/31/2024
Purchases
Sales
Change in
Unrealized
Appreciation
(Depreciation)
Realized
Gain
(Loss)
Value at
5/31/2025
Dividend
Income
First Trust Core
Investment Grade ETF
176,341
$
$4,486,315
$(840,950
)
$10,506
$6,732
$3,662,603
$69,499
First Trust Emerging
Markets Local Currency
Bond ETF
3,894,478
200,252
(3,861,955
)
(136,917
)
(95,858
)
60,027
First Trust Enhanced Short
Maturity ETF
123,634
11,316,329
5,702,029
(9,622,843
)
(45,002
)
42,800
7,393,313
269,684
First Trust Institutional
Preferred Securities and
Income ETF
164,923
3,739,027
(659,757
)
764
4,026
3,084,060
71,563
First Trust Intermediate
Duration Investment
Grade Corporate ETF
5,469,689
(5,252,389
)
(217,300
)
56,903
First Trust Limited
Duration Investment
Grade Corporate ETF
2,280,230
53,602,679
13,838,186
(23,954,972
)
(567,349
)
383,024
43,301,568
1,528,321
First Trust Low Duration
Opportunities ETF
878,118
53,634,361
10,535,200
(21,178,154
)
(442,955
)
391,518
42,939,970
1,358,068
First Trust Senior Loan
Fund
216,059
7,552,168
12,270,899
(9,853,195
)
(33,270
)
(41,100
)
9,895,502
359,089
First Trust Tactical High
Yield ETF
315,914
15,370,965
12,460,848
(14,710,729
)
730,202
(791,401
)
13,059,885
601,030
 
$145,370,980
$68,702,445
$(89,934,944
)
$(484,021
)
$(317,559
)
$123,336,901
$4,374,184

First Trust Exchange-Traded Fund VIII
Additional Information
May 31, 2025 (Unaudited)
Valuation Inputs
The Funds are subject to fair value accounting standards that define fair value, establish the framework for measuring fair value and provide a three-level hierarchy for fair valuation based upon the inputs to the valuation as of the measurement date. The three levels of the fair value hierarchy are as follows:
• Level 1 – Level 1 inputs are quoted prices in active markets for identical investments.
• Level 2 – Level 2 inputs are observable inputs, either directly or indirectly. (Quoted prices for similar investments, valuations based on interest rates and yield curves, or valuations derived from observable market data.)
• Level 3 – Level 3 inputs are unobservable inputs that may reflect the reporting entity’s own assumptions about the assumptions that market participants would use in pricing the investment.
The inputs or methodologies used for valuing investments are not necessarily an indication of the risk associated with investing in those investments.