Columbia Mid Cap Index Fund
First Quarter Report
May 31, 2026 (Unaudited)
  
Not FDIC or NCUA Insured
No Financial Institution Guarantee
May Lose Value
Portfolio of Investments
Columbia Mid Cap Index Fund, May 31, 2026 (Unaudited)
(Percentages represent value of investments compared to net assets)
Investments in securities
 
 
Common Stocks 98.6%
Issuer
Shares
Value ($)
Communication Services 0.9%
Entertainment 0.1%
Warner Music Group Corp., Class A
104,972
3,310,817
Interactive Media & Services 0.3%
Pinterest, Inc., Class A(a)
418,172
8,384,348
Media 0.5%
New York Times Co. (The), Class A
115,402
8,679,385
Nexstar Media Group, Inc., Class A
20,361
3,633,013
Total
12,312,398
Total Communication Services
24,007,563
Consumer Discretionary 10.8%
Automobile Components 1.2%
Autoliv, Inc.
49,091
6,240,448
BorgWarner, Inc.
147,887
10,621,244
Gentex Corp.
156,383
3,778,213
Goodyear Tire & Rubber Co. (The)(a)
204,456
1,247,182
Lear Corp.
36,232
5,185,524
Visteon Corp.
19,489
2,305,354
Total
29,377,965
Automobiles 0.2%
Harley-Davidson, Inc.
84,385
2,040,429
Thor Industries, Inc.
37,741
2,984,558
Total
5,024,987
Broadline Retail 0.3%
Macy’s, Inc.
189,910
4,132,442
Ollie’s Bargain Outlet Holdings, Inc.(a)
43,808
3,576,047
Total
7,708,489
Diversified Consumer Services 0.8%
Duolingo, Inc.(a)
28,581
3,182,780
Graham Holdings Co., Class B
2,427
2,663,123
Grand Canyon Education, Inc.(a)
19,736
2,957,440
H&R Block, Inc.
90,540
3,484,884
Service Corp. International
99,443
7,477,119
Total
19,765,346
Common Stocks (continued)
Issuer
Shares
Value ($)
Hotels, Restaurants & Leisure 2.5%
Aramark
187,734
10,021,241
Boyd Gaming Corp.
41,292
3,414,023
Cava Group, Inc.(a)
71,246
5,532,964
Choice Hotels International, Inc.
14,763
1,607,395
Churchill Downs, Inc.
47,315
4,126,341
Dutch Bros, Inc., Class A(a)
90,734
5,262,572
Hilton Grand Vacations, Inc.(a)
42,770
2,224,895
Hyatt Hotels Corp., Class A
29,525
5,354,654
Planet Fitness, Inc., Class A(a)
59,272
3,171,645
Texas Roadhouse, Inc.
47,246
8,533,572
Travel + Leisure Co.
45,945
3,124,260
Vail Resorts, Inc.
25,553
3,413,881
Wingstop, Inc.
19,847
3,115,185
Wyndham Hotels & Resorts, Inc.
53,964
4,331,151
Total
63,233,779
Household Durables 1.7%
KB Home
45,123
2,204,710
SharkNinja, Inc.(a)
50,412
6,144,719
Somnigroup International, Inc.
149,929
10,616,472
Taylor Morrison Home Corp., Class A(a)
69,801
4,083,359
Toll Brothers, Inc.
67,676
9,375,833
TopBuild Corp.(a)
19,936
8,322,881
Whirlpool Corp.
45,286
1,966,318
Total
42,714,292
Leisure Products 0.5%
Brunswick Corp.
46,453
3,890,903
Mattel, Inc.(a)
221,993
3,316,576
Polaris, Inc.
38,167
2,693,445
YETI Holdings, Inc.(a)
55,575
2,665,933
Total
12,566,857
Specialty Retail 3.1%
Abercrombie & Fitch Co., Class A(a)
32,755
2,529,341
AutoNation, Inc.(a)
18,595
3,490,653
Bath & Body Works, Inc.
146,225
2,927,425
Burlington Stores, Inc.(a)
44,413
14,382,262
2
Columbia Mid Cap Index Fund  | 2026
Portfolio of Investments  (continued)
Columbia Mid Cap Index Fund, May 31, 2026 (Unaudited)
Common Stocks (continued)
Issuer
Shares
Value ($)
Chewy, Inc., Class A(a)
170,366
3,840,050
Dick’s Sporting Goods, Inc.
47,426
10,792,735
Five Below, Inc.(a)
39,397
8,957,302
Floor & Decor Holdings, Inc., Class A(a)
76,966
3,956,052
GameStop Corp., Class A(a)
294,396
6,235,307
Gap, Inc. (The)
162,047
3,427,294
Lithia Motors, Inc., Class A
17,321
5,038,506
Murphy U.S.A., Inc.
12,068
6,106,770
Penske Automotive Group, Inc.
13,171
2,204,430
Restoration Hardware Holdings, Inc.(a)
10,998
1,633,093
Valvoline, Inc.(a)
90,937
3,069,124
Total
78,590,344
Textiles, Apparel & Luxury Goods 0.5%
Capri Holdings Ltd.(a)
85,113
1,575,442
Columbia Sportswear Co.
18,091
1,197,262
Crocs, Inc.(a)
35,880
4,257,880
PVH Corp.
32,715
3,051,655
VF Corp.
234,750
4,033,005
Total
14,115,244
Total Consumer Discretionary
273,097,303
Consumer Staples 3.1%
Beverages 0.5%
Boston Beer Co., Inc. (The), Class A(a)
5,494
973,976
Celsius Holdings, Inc.(a)
114,158
3,798,037
Coca-Cola Bottling Co. Consolidated
40,404
7,000,397
Total
11,772,410
Consumer Staples Distribution & Retail 1.9%
Albertsons Companies, Inc., Class A
264,290
4,125,567
BJ’s Wholesale Club Holdings, Inc.(a)
93,460
7,970,269
Maplebear, Inc.(a)
131,262
5,224,228
Performance Food Group, Inc.(a)
112,210
11,017,900
Sprouts Farmers Market, Inc.(a)
69,547
5,745,973
U.S. Foods Holding Corp.(a)
157,525
12,893,421
Total
46,977,358
Common Stocks (continued)
Issuer
Shares
Value ($)
Food Products 0.6%
Darling Ingredients, Inc.(a)
112,986
6,677,473
Ingredion, Inc.
44,999
4,564,698
Marzetti Co. (The)
14,495
1,622,570
Pilgrim’s Pride Corp.
30,541
864,616
Post Holdings, Inc.(a)
30,143
2,768,333
Total
16,497,690
Personal Care Products 0.1%
BellRing Brands, Inc.(a)
83,761
700,242
Coty, Inc., Class A(a)
263,993
562,305
elf Beauty, Inc.(a)
42,179
2,362,024
Total
3,624,571
Total Consumer Staples
78,872,029
Energy 4.6%
Energy Equipment & Services 1.3%
NOV, Inc.
257,423
5,138,163
TechnipFMC PLC
288,934
19,768,864
Valaris Ltd.(a)
45,988
4,259,869
Weatherford International PLC
51,225
5,308,959
Total
34,475,855
Oil, Gas & Consumable Fuels 3.3%
Antero Midstream Corp.
236,533
4,957,732
Antero Resources Corp.(a)
209,349
7,484,227
Chord Energy Corp.
40,616
5,356,032
CNX Resources Corp.(a)
101,688
3,425,869
DT Midstream, Inc.
72,622
10,165,627
HF Sinclair Corp.
111,679
7,805,245
Matador Resources Co.
83,437
4,472,223
Murphy Oil Corp.
95,836
3,468,305
Ovintiv, Inc.
198,328
11,114,301
PBF Energy, Inc., Class A
59,297
2,413,388
Permian Resources Corp.
528,808
10,168,978
Range Resources Corp.
169,234
6,591,664
Viper Energy, Inc., Class A
132,726
6,039,033
Total
83,462,624
Total Energy
117,938,479
Columbia Mid Cap Index Fund  | 2026
3
Portfolio of Investments  (continued)
Columbia Mid Cap Index Fund, May 31, 2026 (Unaudited)
Common Stocks (continued)
Issuer
Shares
Value ($)
Financials 14.1%
Banks 5.7%
Associated Banc-Corp.
116,855
3,249,738
Bank OZK
74,112
3,586,280
Columbia Banking System, Inc.
211,009
6,254,307
Commerce Bancshares, Inc.
97,884
5,111,502
Cullen/Frost Bankers, Inc.
45,143
6,117,779
East West Bancorp, Inc.
98,273
12,042,373
First Financial Bankshares, Inc.
93,085
3,042,018
First Horizon Corp.
346,418
8,393,708
Flagstar Bank
213,927
3,007,814
FNB Corp.
255,208
4,461,036
Glacier Bancorp, Inc.
91,906
4,370,130
Hancock Whitney Corp.
58,755
4,002,391
Home Bancshares, Inc.
130,667
3,496,649
International Bancshares Corp.
38,629
2,787,469
Old National Bancorp
247,706
5,947,421
Pinnacle Financial Partners, Inc.
107,527
10,509,689
Prosperity Bancshares, Inc.
72,171
4,976,912
SouthState Bank Corp.
70,811
6,709,342
Texas Capital Bancshares, Inc.(a)
31,554
3,139,307
UMB Financial Corp.
51,001
6,694,391
United Bankshares, Inc.
99,677
4,326,979
Valley National Bancorp
341,912
4,708,128
Webster Financial Corp.
115,165
8,374,799
Western Alliance Bancorp
73,351
5,842,407
Wintrust Financial Corp.
47,838
7,186,703
Zions Bancorp NA
105,463
6,586,164
Total
144,925,436
Capital Markets 2.4%
Affiliated Managers Group, Inc.
20,091
6,084,559
Carlyle Group, Inc. (The)
185,348
8,420,360
Evercore, Inc., Class A
27,626
9,416,599
Federated Hermes, Inc., Class B
52,785
2,959,127
Hamilton Lane, Inc., Class A
29,187
2,543,063
Houlihan Lokey, Inc., Class A
38,823
5,499,666
Janus Henderson Group PLC
88,041
4,552,600
Jefferies Financial Group, Inc.
118,105
6,226,496
Morningstar, Inc.
16,399
2,984,946
Common Stocks (continued)
Issuer
Shares
Value ($)
SEI Investments Co.
66,352
5,831,014
Stifel Financial Corp.
108,922
7,640,878
Total
62,159,308
Consumer Finance 0.7%
Ally Financial, Inc.
200,514
8,584,004
FirstCash Holdings, Inc.
27,647
6,079,852
SLM Corp.
142,281
3,147,256
Total
17,811,112
Financial Services 1.4%
Corebridge Financial, Inc.
182,347
4,923,369
Equitable Holdings, Inc.
202,351
8,367,214
Essent Group Ltd.
68,181
3,946,998
Euronet Worldwide, Inc.(a)
27,929
2,024,294
MGIC Investment Corp.
156,686
3,951,621
Shift4 Payments, Inc., Class A(a)
48,259
2,150,421
Voya Financial, Inc.
67,141
5,453,192
WEX, Inc.(a)
24,491
3,550,215
Total
34,367,324
Insurance 3.3%
American Financial Group, Inc.
49,446
6,418,091
Brighthouse Financial, Inc.(a)
40,844
2,554,792
CNO Financial Group, Inc.
67,498
3,102,883
Fidelity National Financial, Inc.
182,178
8,626,128
First American Financial Corp.
72,783
4,820,418
Hanover Insurance Group, Inc. (The)
25,285
4,708,067
Kinsale Capital Group, Inc.
15,785
4,810,794
Old Republic International Corp.
162,605
6,053,784
Primerica, Inc.
22,796
6,154,236
Reinsurance Group of America, Inc.
46,937
9,422,133
RenaissanceRe Holdings Ltd.
31,063
8,708,512
RLI Corp.
65,596
3,282,424
Ryan Specialty Holdings, Inc., Class A
81,462
2,594,565
Selective Insurance Group, Inc.
42,914
3,713,778
Unum Group
108,885
9,062,499
Total
84,033,104
4
Columbia Mid Cap Index Fund  | 2026
Portfolio of Investments  (continued)
Columbia Mid Cap Index Fund, May 31, 2026 (Unaudited)
Common Stocks (continued)
Issuer
Shares
Value ($)
Mortgage Real Estate Investment Trusts (REITs) 0.6%
Annaly Capital Management, Inc.
513,117
11,211,607
Starwood Property Trust, Inc.
248,643
4,246,822
Total
15,458,429
Total Financials
358,754,713
Health Care 8.6%
Biotechnology 3.0%
Arrowhead Pharmaceuticals, Inc.(a)
100,020
7,792,558
BioMarin Pharmaceutical, Inc.(a)
137,220
7,861,334
Cytokinetics, Inc.(a)
94,371
7,243,918
Exelixis, Inc.(a)
185,500
9,364,040
Halozyme Therapeutics, Inc.(a)
83,995
5,589,027
Neurocrine Biosciences, Inc.(a)
71,686
11,347,894
Roivant Sciences Ltd.(a)
322,055
9,658,430
United Therapeutics Corp.(a)
30,754
17,124,442
Total
75,981,643
Health Care Equipment & Supplies 1.4%
Dentsply Sirona, Inc.
142,533
1,492,321
Envista Holdings Corp.(a)
117,050
2,756,528
Globus Medical, Inc., Class A(a)
79,575
6,515,601
Haemonetics Corp.(a)
33,193
2,250,817
Lantheus Holdings, Inc.(a)
47,364
4,703,245
LivaNova PLC(a)
39,003
2,878,421
Masimo Corp.(a)
32,611
5,819,433
Penumbra, Inc.(a)
28,021
8,919,084
Total
35,335,450
Health Care Providers & Services 1.6%
Chemed Corp.
10,117
4,313,990
Encompass Health Corp.
71,866
7,607,016
Ensign Group, Inc. (The)
41,197
6,906,677
HealthEquity, Inc.(a)
61,024
5,369,502
Hims & Hers Health, Inc., Class A(a)
148,786
3,890,754
Option Care Health, Inc.(a)
113,377
2,366,178
Tenet Healthcare Corp.(a)
62,773
11,005,362
Total
41,459,479
Health Care Technology 0.1%
Doximity, Inc., Class A(a)
95,577
2,045,348
Common Stocks (continued)
Issuer
Shares
Value ($)
Life Sciences Tools & Services 1.8%
Avantor, Inc.(a)
487,167
4,442,963
Bio-Rad Laboratories, Inc., Class A(a)
12,987
4,058,178
Bruker Corp.
79,224
4,665,501
Illumina, Inc.(a)
109,211
17,797,025
Medpace Holdings, Inc.(a)
16,014
7,160,020
Repligen Corp.(a)
37,794
4,684,566
Sotera Health Co.(a)
188,713
2,951,471
Total
45,759,724
Pharmaceuticals 0.7%
Elanco Animal Health, Inc.(a)
354,891
8,464,150
Jazz Pharmaceuticals PLC(a)
43,402
10,264,139
Total
18,728,289
Total Health Care
219,309,933
Industrials 25.6%
Aerospace & Defense 4.3%
Aerovironment, Inc.(a)
22,721
4,708,700
ATI, Inc.(a)
97,043
16,998,052
BWX Technologies, Inc.
65,303
12,791,552
Carpenter Technology Corp.
35,577
16,684,902
Curtiss-Wright Corp.
26,335
19,688,309
Hexcel Corp.
54,191
4,865,810
Kratos Defense & Security Solutions, Inc.(a)
131,864
8,456,438
Moog, Inc., Class A
20,306
7,309,551
StandardAero, Inc.(a)
135,463
3,879,660
Woodward, Inc.
42,581
14,904,627
Total
110,287,601
Air Freight & Logistics 0.2%
GXO Logistics, Inc.(a)
81,792
4,098,597
Building Products 1.8%
AAON, Inc.
48,335
6,776,567
Advanced Drainage Systems, Inc.
51,187
7,123,183
Carlisle Companies, Inc.
29,135
10,046,039
Fortune Brands Innovations, Inc.
85,810
3,341,441
Owens Corning
58,707
7,386,515
Simpson Manufacturing Co., Inc.
29,613
5,618,771
Columbia Mid Cap Index Fund  | 2026
5
Portfolio of Investments  (continued)
Columbia Mid Cap Index Fund, May 31, 2026 (Unaudited)
Common Stocks (continued)
Issuer
Shares
Value ($)
Trex Company, Inc.(a)
76,608
3,171,571
UFP Industries, Inc.
41,611
3,370,491
Total
46,834,578
Commercial Services & Supplies 1.5%
Brink’s Co. (The)
29,675
3,086,793
Clean Harbors, Inc.(a)
35,875
10,081,951
MSA Safety, Inc.
26,034
4,316,437
RB Global, Inc.
132,633
14,105,520
Tetra Tech, Inc.
186,285
5,120,975
Total
36,711,676
Construction & Engineering 3.0%
AECOM
92,346
6,406,042
API Group Corp.(a)
274,065
11,236,665
Dycom Industries, Inc.(a)
21,404
10,916,040
Fluor Corp.(a)
115,127
5,268,212
MasTec, Inc.(a)
43,811
16,576,768
Sterling Infrastructure, Inc.(a)
21,941
18,887,690
Valmont Industries, Inc.
14,071
7,314,247
Total
76,605,664
Electrical Equipment 2.7%
Acuity, Inc.
21,759
6,638,889
EnerSys
26,321
6,000,398
Nextpower, Inc., Class A(a)
106,051
16,586,376
nVent Electric PLC
115,253
19,246,098
Regal Rexnord Corp.
47,427
9,568,872
Sensata Technologies Holding
104,053
5,139,178
Vicor Corp.(a)
16,227
5,433,449
Total
68,613,260
Ground Transportation 2.0%
Avis Budget Group, Inc.(a)
12,067
2,121,861
Knight-Swift Transportation Holdings, Inc.
115,953
8,769,526
Landstar System, Inc.
24,327
5,033,256
Ryder System, Inc.
28,161
7,064,187
Saia, Inc.(a)
19,030
8,989,201
XPO, Inc.(a)
83,674
17,927,155
Total
49,905,186
Common Stocks (continued)
Issuer
Shares
Value ($)
Machinery 5.4%
AGCO Corp.
42,923
4,819,394
Chart Industries, Inc.(a)
32,108
6,672,685
CNH Industrial NV
632,085
6,453,588
Crane Co.
34,968
6,399,144
Donaldson Co., Inc.
82,381
6,744,532
Esab Corp.
40,762
3,767,632
Flowserve Corp.
90,733
6,851,249
Graco, Inc.
118,421
8,934,864
ITT, Inc.
61,427
11,978,265
Lincoln Electric Holdings, Inc.
39,303
10,159,432
Middleby Corp. (The)(a)
33,100
5,130,831
Mueller Industries, Inc.
79,293
10,197,080
Oshkosh Corp.
45,180
5,873,400
RBC Bearings, Inc.(a)
22,584
12,917,145
SPX Technologies, Inc.(a)
35,596
7,712,229
Terex Corp.
81,212
4,724,914
Timken Co. (The)
45,275
5,794,295
Toro Co. (The)
69,627
6,258,075
Watts Water Technologies, Inc., Class A
19,590
6,052,918
Total
137,441,672
Marine Transportation 0.2%
Kirby Corp.(a)
38,713
5,442,661
Passenger Airlines 0.4%
Alaska Air Group, Inc.(a)
81,884
3,768,302
American Airlines Group, Inc.(a)
471,629
6,904,648
Total
10,672,950
Professional Services 2.3%
Booz Allen Hamilton Holding Corp.
86,136
6,820,249
CACI International, Inc., Class A(a)
15,775
8,100,620
Concentrix Corp.
31,238
883,723
ExlService Holdings, Inc.(a)
112,246
3,258,501
Exponent, Inc.
35,632
2,078,058
FTI Consulting, Inc.(a)
21,617
3,311,292
Genpact Ltd.
113,151
3,728,325
KBR, Inc.
90,704
3,170,105
MAXIMUS, Inc.
38,962
2,412,917
Parsons Corp.(a)
37,796
2,233,744
6
Columbia Mid Cap Index Fund  | 2026
Portfolio of Investments  (continued)
Columbia Mid Cap Index Fund, May 31, 2026 (Unaudited)
Common Stocks (continued)
Issuer
Shares
Value ($)
Paylocity Holding Corp.(a)
31,171
3,582,483
Science Applications International Corp.
32,233
3,358,679
TransUnion
137,424
9,834,061
UL Solutions, Inc., Class A
55,182
5,490,609
Total
58,263,366
Trading Companies & Distributors 1.8%
Applied Industrial Technologies, Inc.
26,643
8,094,410
Core & Main, Inc., Class A(a)
134,855
6,668,580
GATX Corp.
25,499
4,311,371
MSC Industrial Direct Co., Inc., Class A
32,684
3,577,917
Watsco, Inc.
24,945
9,157,309
WESCO International, Inc.
34,746
12,549,213
Total
44,358,800
Total Industrials
649,236,011
Information Technology 15.5%
Communications Equipment 0.2%
InterDigital, Inc.
18,347
4,625,095
Electronic Equipment, Instruments & Components 5.3%
Advanced Energy Industries, Inc.
26,960
8,146,773
Arrow Electronics, Inc.(a)
36,489
7,831,634
Avnet, Inc.
58,472
5,082,971
Belden, Inc.
28,071
2,949,701
Cognex Corp.
118,359
7,793,940
Crane NXT Co.
35,272
1,369,964
Fabrinet(a)
25,589
16,739,300
Flex Ltd.(a)
262,616
39,597,240
IPG Photonics Corp.(a)
18,054
2,067,544
Littelfuse, Inc.
17,787
8,304,217
Novanta, Inc.(a)
25,553
4,071,360
TD SYNNEX Corp.
53,557
13,993,373
TTM Technologies, Inc.(a)
73,805
12,821,405
Vontier Corp.
101,140
2,870,353
Total
133,639,775
Common Stocks (continued)
Issuer
Shares
Value ($)
IT Services 1.8%
DigitalOcean Holdings, Inc.(a)
56,761
8,851,878
Kyndryl Holdings, Inc.(a)
163,255
2,035,790
Okta, Inc.(a)
121,038
14,920,354
Twilio, Inc., Class A(a)
108,292
20,644,787
Total
46,452,809
Semiconductors & Semiconductor Equipment 4.8%
Allegro MicroSystems, Inc.(a)
88,672
4,244,729
Amkor Technology, Inc.
81,256
5,652,167
Cirrus Logic, Inc.(a)
36,432
6,191,618
Entegris, Inc.
108,568
15,068,153
Lattice Semiconductor Corp.(a)
97,701
14,369,863
MACOM Technology Solutions Holdings, Inc.(a)
46,077
16,801,517
MKS, Inc.
47,976
15,556,698
Onto Innovation, Inc.(a)
35,465
9,158,482
Rambus, Inc.(a)
76,890
11,184,419
Silicon Laboratories, Inc.(a)
23,539
5,122,086
SiTime Corp.(a)
15,779
11,206,246
Synaptics, Inc.(a)
27,663
3,797,577
Universal Display Corp.
31,580
2,909,150
Total
121,262,705
Software 2.7%
Appfolio, Inc., Class A(a)
17,382
2,801,457
Bentley Systems, Inc., Class B
106,375
3,472,080
BILL Holdings, Inc.(a)
62,908
2,328,854
Blackbaud, Inc.(a)
25,567
784,651
CommVault Systems, Inc.(a)
31,409
3,729,819
DocuSign, Inc.(a)
143,048
7,512,881
Dolby Laboratories, Inc., Class A
43,488
2,427,065
Dropbox, Inc., Class A(a)
124,584
3,348,818
Dynatrace, Inc.(a)
213,030
9,072,948
Guidewire Software, Inc.(a)
60,726
9,271,038
Manhattan Associates, Inc.(a)
42,747
6,414,187
Nutanix, Inc., Class A(a)
193,137
10,056,644
Pegasystems, Inc.
65,201
2,329,632
Qualys, Inc.(a)
25,612
2,799,136
UiPath, Inc., Class A(a)
305,857
3,584,644
Total
69,933,854
Columbia Mid Cap Index Fund  | 2026
7
Portfolio of Investments  (continued)
Columbia Mid Cap Index Fund, May 31, 2026 (Unaudited)
Common Stocks (continued)
Issuer
Shares
Value ($)
Technology Hardware, Storage & Peripherals 0.7%
Everpure, Inc., Class A(a)
224,038
17,813,261
Total Information Technology
393,727,499
Materials 5.7%
Chemicals 1.7%
Ashland, Inc.
32,686
1,892,519
Avient Corp.
65,401
2,316,503
Axalta Coating Systems Ltd.(a)
152,424
4,690,087
Cabot Corp.
37,300
3,264,123
NewMarket Corp.
5,571
4,309,614
Olin Corp.
81,140
2,099,092
RPM International, Inc.
91,480
9,694,136
Scotts Miracle-Gro Co. (The), Class A
31,921
1,883,339
Solstice Advanced Materials, Inc.
113,387
9,550,587
Westlake Corp.
23,821
2,068,377
Total
41,768,377
Construction Materials 0.3%
Eagle Materials, Inc.
22,451
4,965,712
Knife River Corp.(a)
40,473
3,177,535
Total
8,143,247
Containers & Packaging 0.9%
AptarGroup, Inc.
45,984
5,327,246
Crown Holdings, Inc.
80,062
7,612,295
Graphic Packaging Holding Co.
210,799
2,373,597
Greif, Inc., Class A
17,679
1,119,611
Silgan Holdings, Inc.
62,644
2,352,909
Sonoco Products Co.
70,451
3,429,555
Total
22,215,213
Metals & Mining 2.7%
Alcoa Corp.
184,968
14,360,915
Cleveland-Cliffs, Inc.(a)
407,408
5,540,749
Commercial Metals Co.
79,217
6,024,453
Hecla Mining Co.
478,627
8,505,202
MP Materials Corp.(a)
96,207
6,224,593
Reliance, Inc.
37,347
14,220,617
Royal Gold, Inc.
57,871
12,990,882
Total
67,867,411
Common Stocks (continued)
Issuer
Shares
Value ($)
Paper & Forest Products 0.1%
Louisiana-Pacific Corp.
45,267
3,457,494
Total Materials
143,451,742
Real Estate 6.6%
Diversified REITs 0.4%
WP Carey, Inc.
156,528
11,648,814
Health Care REITs 1.2%
American Healthcare REIT, Inc.
126,718
6,195,243
CareTrust REIT, Inc.
159,570
6,513,647
Healthcare Realty Trust, Inc.
249,171
4,963,486
Omega Healthcare Investors, Inc.
211,115
9,871,738
Sabra Health Care REIT, Inc.
180,098
3,582,149
Total
31,126,263
Hotel & Resort REITs 0.1%
Park Hotels & Resorts, Inc.
142,780
1,731,921
Industrial REITs 1.0%
EastGroup Properties, Inc.
38,031
7,678,839
First Industrial Realty Trust, Inc.
94,657
5,856,429
Rexford Industrial Realty, Inc.
164,438
5,832,616
STAG Industrial, Inc.
136,450
5,167,361
Total
24,535,245
Office REITs 0.5%
COPT Defense Properties
80,690
2,586,922
Cousins Properties, Inc.
119,983
3,216,744
Kilroy Realty Corp.
77,871
2,668,639
Vornado Realty Trust
114,396
3,860,865
Total
12,333,170
Real Estate Management & Development 0.4%
Jones Lang LaSalle, Inc.(a)
33,710
9,516,670
Residential REITs 0.7%
American Homes 4 Rent, Class A
232,860
7,470,149
Equity LifeStyle Properties, Inc.
138,450
8,552,056
Independence Realty Trust, Inc.
169,174
2,745,694
Total
18,767,899
8
Columbia Mid Cap Index Fund  | 2026
Portfolio of Investments  (continued)
Columbia Mid Cap Index Fund, May 31, 2026 (Unaudited)
Common Stocks (continued)
Issuer
Shares
Value ($)
Retail REITs 0.9%
Agree Realty Corp.
85,594
6,346,795
Brixmor Property Group, Inc.
218,986
6,692,212
Kite Realty Group Trust
154,642
4,240,284
NNN REIT, Inc.
135,666
6,038,494
Total
23,317,785
Specialized REITs 1.4%
CubeSmart
162,878
6,515,120
EPR Properties
54,384
3,102,607
Gaming and Leisure Properties, Inc.
202,142
9,494,610
Lamar Advertising Co., Class A
62,043
9,459,076
National Storage Affiliates Trust
50,556
2,156,213
Rayonier, Inc.
198,665
4,150,112
Total
34,877,738
Total Real Estate
167,855,505
Utilities 3.1%
Electric Utilities 0.8%
IDACORP, Inc.
38,602
5,414,702
OGE Energy Corp.
146,761
6,931,522
Portland General Electric Co.
80,347
4,026,992
TXNM Energy, Inc.
70,018
4,145,766
Total
20,518,982
Gas Utilities 1.0%
National Fuel Gas Co.
67,871
5,243,035
New Jersey Resources Corp.
72,030
3,979,657
ONE Gas, Inc.
42,855
3,331,548
Southwest Gas Holdings, Inc.
45,887
3,955,918
Common Stocks (continued)
Issuer
Shares
Value ($)
Spire, Inc.
42,211
3,472,277
UGI Corp.
153,307
5,353,480
Total
25,335,915
Independent Power and Renewable Electricity Producers 0.7%
Ormat Technologies, Inc.
43,414
5,957,703
Talen Energy Corp.(a)
32,633
12,622,445
Total
18,580,148
Multi-Utilities 0.3%
Black Hills Corp.
53,909
3,925,653
Northwestern Energy Group, Inc.
43,887
3,098,861
Total
7,024,514
Water Utilities 0.3%
Essential Utilities, Inc.
202,119
7,456,170
Total Utilities
78,915,729
Total Common Stocks
(Cost $1,475,467,443)
2,505,166,506
 
Money Market Funds 1.3%
 
Shares
Value ($)
Columbia Short-Term Cash Fund, 3.741%(b),(c)
32,508,639
32,495,636
Total Money Market Funds
(Cost $32,495,557)
32,495,636
Total Investments in Securities
(Cost: $1,507,963,000)
2,537,662,142
Other Assets & Liabilities, Net
1,358,379
Net Assets
2,539,020,521
At May 31, 2026, securities and/or cash totaling $2,375,719 were pledged as collateral.
Investments in derivatives 
Long futures contracts
Description
Number of
contracts
Expiration
date
Trading
currency
Notional
amount
Value/Unrealized
appreciation ($)
Value/Unrealized
depreciation ($)
S&P Mid 400 Index E-mini
98
06/2026
USD
36,573,600
2,307,242
—
Columbia Mid Cap Index Fund  | 2026
9
Portfolio of Investments  (continued)
Columbia Mid Cap Index Fund, May 31, 2026 (Unaudited)
Notes to Portfolio of Investments 
(a)
Non-income producing investment.
(b)
The rate shown is the seven-day current annualized yield at May 31, 2026.
(c)
Under the Investment Company Act of 1940, an affiliated company is one in which the Fund owns 5% or more of the company’s outstanding voting securities, or a company which is under common ownership or control with the Fund. The value of the holdings and transactions in these affiliated companies during the period ended May 31, 2026 are as follows:
 
Affiliated issuers
Beginning
of period($)
Purchases($)
Sales($)
Net change in
unrealized
appreciation
(depreciation)($)
End of
period($)
Realized gain
(loss)($)
Dividends($)
End of
period shares
Columbia Short-Term Cash Fund, 3.741%
 
31,766,510
117,655,855
(116,921,962
)
(4,767
)
32,495,636
1,790
280,500
32,508,639
Currency Legend 
USD
US Dollar
Investments are valued using policies described in the Notes to Financial Statements included within the most recent financial statements and additional information.
10
Columbia Mid Cap Index Fund  | 2026
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You may at any time request, free of charge, to receive a paper copy of this report by calling 800.345.6611.
1QT196_(07/26)