Schedule

Investments

(unaudited)

December

31,

2024

iShares

Russell

Mid-Cap

Growth

ETF

(Percentages

shown

are

based

Net

Assets)

Security

Value

Common

Stocks

Aerospace

Defense

—

2.5%

Axon

Enterprise,

Inc.

(a)

................

413,584

245,801,243

BWX

Technologies,

Inc.

...............

107,317

11,954,041

HEICO

Corp.

(b)

.....................

254,380

60,476,301

HEICO

Corp.

Class

.................

468,262

87,134,193

Howmet

Aerospace,

Inc.

...............

142,531

15,588,616

Loar

Holdings,

Inc.

(a)

(b)

.................

157,474

11,638,903

Spirit

AeroSystems

Holdings,

Inc.

Class

(a)

(b)

87,993

2,998,801

Standardaero,

Inc.

(a)

(b)

.................

127,308

3,152,146

438,744,244

Air

Freight

Logistics

—

0.1%

Expeditors

International

Washington,

Inc.

133,184

14,752,792

Banks

—

1.1%

Holdings

Ltd.

Class

(a)

(b)

............

18,330,593

189,904,944

Popular,

Inc.

.......................

42,307

3,979,396

193,884,340

Beverages

—

0.2%

(a)

Boston

Beer

Co.,

Inc.

(The)

Class

.......

10,785

3,235,284

Celsius

Holdings,

Inc.

(b)

................

1,017,456

26,799,791

30,035,075

Biotechnology

—

3.3%

(a)

Alnylam

Pharmaceuticals,

Inc.

...........

658,873

155,039,406

Apellis

Pharmaceuticals,

Inc.

(b)

...........

604,804

19,299,296

Exact

Sciences

Corp.

(b)

................

416,199

23,386,222

Exelixis,

Inc.

(b)

......................

1,347,956

44,886,935

Incyte

Corp.

.......................

54,145

3,739,795

Ionis

Pharmaceuticals,

Inc.

(b)

............

836,477

29,243,236

Natera,

Inc.

(b)

......................

659,508

104,400,116

Neurocrine

Biosciences,

Inc.

............

574,633

78,437,404

Sarepta

Therapeutics,

Inc.

..............

521,827

63,448,945

Ultragenyx

Pharmaceutical,

Inc.

..........

519,302

21,847,035

Viking

Therapeutics,

Inc.

(b)

..............

612,085

24,630,300

568,358,690

Broadline

Retail

—

1.0%

(a)(b)

Coupang,

Inc.

Class

................

6,674,611

146,707,950

Etsy,

Inc.

.........................

418,895

22,155,356

168,863,306

Building

Products

—

1.6%

AAON,

Inc.

(b)

.......................

388,107

45,672,432

Advanced

Drainage

Systems,

Inc.

(b)

.......

152,993

17,685,991

Armstrong

World

Industries,

Inc.

..........

84,450

11,935,318

AZEK

Co.,

Inc.

(The)

Class

(a)

..........

579,637

27,515,368

Builders

FirstSource,

Inc.

(a)

(b)

............

60,064

8,584,948

Carlisle

Cos.,

Inc.

...................

35,810

13,208,160

Lennox

International,

Inc.

..............

184,719

112,549,287

Simpson

Manufacturing

Co.,

Inc.

(b)

........

23,155

3,839,794

Trex

Co.,

Inc.

(a)

(b)

....................

615,326

42,475,954

283,467,252

Capital

Markets

—

7.2%

Ameriprise

Financial,

Inc.

..............

510,709

271,916,793

Ares

Management

Corp.

Class

.........

1,065,712

188,662,995

Blue

Owl

Capital,

Inc.

Class

...........

2,980,034

69,315,591

Coinbase

Global,

Inc.

Class

(a)

..........

980,319

243,413,208

FactSet

Research

Systems,

Inc.

..........

77,651

37,294,222

Houlihan

Lokey,

Inc.

Class

............

27,310

4,742,655

Jefferies

Financial

Group,

Inc.

...........

283,669

22,239,650

Lazard,

Inc.

.......................

591,149

30,432,350

LPL

Financial

Holdings,

Inc.

.............

428,889

140,036,547

Morningstar,

Inc.

....................

153,854

51,811,873

MSCI,

Inc.

........................

253,515

152,111,535

Security

Value

Capital

Markets

(continued)

TPG,

Inc.

Class

...................

120,271

7,557,830

Tradeweb

Markets,

Inc.

Class

..........

264,256

34,596,395

XP,

Inc.

Class

....................

237,423

2,813,463

1,256,945,107

Chemicals

—

0.2%

Celanese

Corp.

(b)

....................

160,272

11,092,425

Chemours

Co.

(The)

..................

68,577

1,158,951

RPM

International,

Inc.

................

165,327

20,345,141

32,596,517

Commercial

Services

Supplies

—

0.9%

Rollins,

Inc.

........................

1,611,767

74,705,400

Tetra

Tech,

Inc.

.....................

330,195

13,154,969

Veralto

Corp.

.......................

640,462

65,231,055

153,091,424

Communications

Equipment

—

0.0%

Ubiquiti,

Inc.

.......................

10,717

3,557,294

Construction

Engineering

—

1.3%

Comfort

Systems

USA,

Inc.

(b)

............

202,578

85,905,227

EMCOR

Group,

Inc.

..................

103,537

46,995,444

Quanta

Services,

Inc.

(b)

................

256,190

80,968,850

WillScot

Holdings

Corp.

(a)

(b)

.............

312,772

10,462,223

224,331,744

Construction

Materials

—

0.6%

Eagle

Materials,

Inc.

(b)

.................

145,200

35,829,552

Martin

Marietta

Materials,

Inc.

...........

19,847

10,250,976

Vulcan

Materials

Co.

.................

197,102

50,700,547

96,781,075

Consumer

Finance

—

0.2%

Ally

Financial,

Inc.

...................

215,791

7,770,634

Credit

Acceptance

Corp.

(a)

(b)

.............

28,220

13,248,161

SoFi

Technologies,

Inc.

(a)

(b)

.............

962,102

14,816,371

35,835,166

Consumer

Staples

Distribution

Retail

—

0.9%

Casey's

General

Stores,

Inc.

............

36,771

14,569,773

Performance

Food

Group

Co.

(a)

..........

127,417

10,773,107

Sysco

Corp.

.......................

1,758,260

134,436,560

159,779,440

Containers

Packaging

—

0.2%

Avery

Dennison

Corp.

.................

174,037

32,567,544

Sealed

Air

Corp.

....................

42,699

1,444,507

34,012,051

Distributors

—

0.4%

Pool

Corp.

........................

215,062

73,323,238

Diversified

Consumer

Services

—

0.5%

Bright

Horizons

Family

Solutions,

Inc.

(a)

.....

49,852

5,526,094

Duolingo,

Inc.

Class

(a)

(b)

..............

214,100

69,417,643

Grand

Canyon

Education,

Inc.

(a)

..........

54,726

8,964,119

H&R

Block,

Inc.

.....................

156,360

8,262,062

92,169,918

Diversified

Telecommunication

Services

—

0.0%

Iridium

Communications,

Inc.

............

61,155

1,774,718

Electric

Utilities

—

0.3%

NRG

Energy,

Inc.

....................

484,147

43,679,742

Electrical

Equipment

—

1.6%

Generac

Holdings,

Inc.

(a)

...............

166,690

25,845,285

Rockwell

Automation,

Inc.

..............

60,762

17,365,172

Schedule

Investments

(unaudited)

(continued)

December

31,

2024

iShares

Russell

Mid-Cap

Growth

ETF

(Percentages

shown

are

based

Net

Assets)

Security

Value

Electrical

Equipment

(continued)

Vertiv

Holdings

Co.

Class

............

2,062,195

234,285,974

277,496,431

Electronic

Equipment,

Instruments

Components

—

0.6%

CDW

Corp.

........................

389,942

67,865,506

Cognex

Corp.

......................

54,701

1,961,578

Ingram

Micro

Holding

Corp.

(a)

(b)

...........

25,350

491,536

Jabil,

Inc.

(b)

........................

52,225

7,515,177

Zebra

Technologies

Corp.

Class

(a)

.......

63,290

24,443,864

102,277,661

Energy

Equipment

Services

—

0.2%

Weatherford

International

plc

............

415,851

29,787,407

Entertainment

—

2.0%

(a)

Liberty

Media

Corp.-Liberty

Formula

One

Class

............................

48,501

4,076,024

Liberty

Media

Corp.-Liberty

Formula

One

Class

(b)

...........................

429,988

39,842,688

Live

Nation

Entertainment,

Inc.

(b)

.........

910,036

117,849,662

Madison

Square

Garden

Sports

Corp.

......

8,598

1,940,397

ROBLOX

Corp.

Class

...............

3,025,065

175,030,261

Roku,

Inc.

Class

...................

108,268

8,048,643

TKO

Group

Holdings,

Inc.

Class

........

62,482

8,879,317

355,666,992

Financial

Services

—

2.6%

Block,

Inc.

Class

(a)

(b)

................

1,351,184

114,837,128

Corpay,

Inc.

(a)

(b)

.....................

388,669

131,533,363

Equitable

Holdings,

Inc.

...............

1,476,853

69,663,156

Shift4

Payments,

Inc.

Class

(a)

(b)

.........

353,093

36,643,991

Toast,

Inc.

Class

(a)

(b)

................

2,609,266

95,107,746

UWM

Holdings

Corp.

Class

...........

390,907

2,294,624

Western

Union

Co.

(The)

..............

229,701

2,434,831

WEX,

Inc.

(a)

........................

22,726

3,984,322

456,499,161

Food

Products

—

0.3%

Freshpet,

Inc.

(a)

.....................

85,481

12,660,591

Hershey

Co.

(The)

...................

116,610

19,747,903

Lamb

Weston

Holdings,

Inc.

............

267,959

17,907,700

Pilgrim's

Pride

Corp.

(a)

(b)

...............

22,333

1,013,695

51,329,889

Ground

Transportation

—

2.1%

Avis

Budget

Group,

Inc.

(a)

..............

38,272

3,085,106

Lyft,

Inc.

Class

(a)

(b)

..................

1,457,975

18,807,877

Old

Dominion

Freight

Line,

Inc.

..........

1,114,252

196,554,053

Saia,

Inc.

(a)

(b)

.......................

89,283

40,688,942

U-Haul

Holding

Co.

NVS

(b)

.............

251,078

16,081,546

U-Haul

Holding

Co.

(a)

(b)

................

19,000

1,312,710

XPO,

Inc.

(a)

........................

660,283

86,596,115

363,126,349

Health

Care

Equipment

Supplies

—

4.0%

Align

Technology,

Inc.

(a)

(b)

...............

253,132

52,780,553

Dexcom,

Inc.

(a)

.....................

2,247,590

174,795,074

HealthCare

Technologies,

Inc.

(b)

.......

245,924

19,226,338

IDEXX

Laboratories,

Inc.

(a)

(b)

............

468,198

193,571,781

Inspire

Medical

Systems,

Inc.

(a)

(b)

.........

168,745

31,281,948

Insulet

Corp.

(a)

......................

402,499

105,080,414

Masimo

Corp.

(a)

.....................

129,328

21,377,919

Penumbra,

Inc.

(a)

(b)

...................

212,902

50,559,967

ResMed,

Inc.

......................

229,244

52,425,811

701,099,805

Security

Value

Health

Care

Providers

Services

—

2.4%

Cardinal

Health,

Inc.

..................

834,196

98,660,361

Cencora,

Inc.

......................

956,736

214,959,445

Chemed

Corp.

......................

8,733

4,626,743

DaVita,

Inc.

(a)

(b)

.....................

271,542

40,609,106

Molina

Healthcare,

Inc.

(a)

...............

206,039

59,967,651

418,823,306

Health

Care

Technology

—

1.0%

(a)

Doximity,

Inc.

Class

................

52,067

2,779,857

Veeva

Systems,

Inc.

Class

(b)

..........

850,031

178,719,018

181,498,875

Hotels,

Restaurants

Leisure

—

7.1%

Cava

Group,

Inc.

(a)

...................

435,569

49,132,183

Choice

Hotels

International,

Inc.

(b)

.........

136,403

19,366,498

Churchill

Downs,

Inc.

(b)

................

402,095

53,695,766

Darden

Restaurants,

Inc.

..............

356,391

66,534,636

Domino's

Pizza,

Inc.

..................

69,851

29,320,656

DraftKings,

Inc.

Class

(a)

(b)

.............

2,609,068

97,057,330

Dutch

Bros,

Inc.

Class

(a)

.............

248,681

13,025,911

Expedia

Group,

Inc.

(a)

(b)

................

715,202

133,263,589

Hilton

Worldwide

Holdings,

Inc.

..........

707,899

174,964,317

Hyatt

Hotels

Corp.

Class

(b)

............

36,744

5,768,073

Las

Vegas

Sands

Corp.

...............

2,006,767

103,067,553

Light

Wonder,

Inc.

Class

(a)

(b)

.........

510,190

44,070,212

Norwegian

Cruise

Line

Holdings

Ltd.

(a)

(b)

....

2,526,468

65,006,022

Planet

Fitness,

Inc.

Class

(a)

...........

264,313

26,132,626

Royal

Caribbean

Cruises

Ltd.

...........

474,296

109,415,344

Texas

Roadhouse,

Inc.

................

384,630

69,398,791

Vail

Resorts,

Inc.

....................

181,264

33,977,937

Wendy's

Co.

(The)

...................

490,241

7,990,928

Wingstop,

Inc.

......................

169,406

48,145,185

Wyndham

Hotels

Resorts,

Inc.

.........

38,548

3,885,253

Wynn

Resorts

Ltd.

...................

43,747

3,769,241

Yum!

Brands,

Inc.

...................

624,100

83,729,256

1,240,717,307

Household

Durables

—

0.4%

SharkNinja,

Inc.

(a)

....................

75,339

7,335,005

Tempur

Sealy

International,

Inc.

..........

966,657

54,799,786

TopBuild

Corp.

(a)

(b)

...................

14,615

4,550,234

66,685,025

Household

Products

—

0.7%

Clorox

Co.

(The)

....................

715,348

116,179,669

Independent

Power

and

Renewable

Electricity

Producers

—

1.5%

Vistra

Corp.

.......................

1,954,429

269,457,126

Insurance

—

1.6%

Allstate

Corp.

(The)

..................

236,571

45,608,523

Arthur

Gallagher

Co.

(b)

..............

97,553

27,690,419

Brown

Brown,

Inc.

(b)

.................

605,489

61,771,988

Everest

Group

Ltd.

...................

40,528

14,689,779

Kinsale

Capital

Group,

Inc.

(b)

............

126,899

59,024,532

Markel

Group,

Inc.

(a)

..................

17,389

30,017,413

RLI

Corp.

.........................

14,599

2,406,353

Ryan

Specialty

Holdings,

Inc.

Class

(b)

....

590,330

37,875,573

279,084,580

Interactive

Media

Services

—

0.6%

(a)

Pinterest,

Inc.

Class

................

3,465,542

100,500,718

TripAdvisor,

Inc.

(b)

...................

30,713

453,631

Trump

Media

Technology

Group

Corp.

(b)

...

268,471

9,154,861

110,109,210

Schedule

Investments

(unaudited)

(continued)

December

31,

2024

iShares

Russell

Mid-Cap

Growth

ETF

(Percentages

shown

are

based

Net

Assets)

Security

Value

Services

—

4.3%

(a)

Cloudflare,

Inc.

Class

(b)

..............

1,728,121

186,084,069

EPAM

Systems,

Inc.

..................

20,034

4,684,350

Gartner,

Inc.

.......................

434,150

210,332,650

Globant

(b)

.......................

182,221

39,071,827

GoDaddy,

Inc.

Class

(b)

...............

805,314

158,944,824

MongoDB,

Inc.

Class

...............

412,357

96,000,833

Okta,

Inc.

Class

...................

416,757

32,840,452

Twilio,

Inc.

Class

..................

174,485

18,858,339

VeriSign,

Inc.

......................

31,530

6,525,449

753,342,793

Leisure

Products

—

0.3%

Hasbro,

Inc.

.......................

701,028

39,194,475

YETI

Holdings,

Inc.

(a)

(b)

................

147,488

5,679,763

44,874,238

Life

Sciences

Tools

Services

—

1.5%

10X

Genomics,

Inc.

Class

(a)

...........

403,052

5,787,827

Bruker

Corp.

.......................

398,951

23,386,508

Fortrea

Holdings,

Inc.

(a)

(b)

...............

49,614

925,301

IQVIA

Holdings,

Inc.

(a)

(b)

................

117,122

23,015,644

Medpace

Holdings,

Inc.

(a)

(b)

.............

146,800

48,771,364

Repligen

Corp.

(a)

(b)

...................

46,069

6,631,172

Waters

Corp.

(a)

(b)

....................

207,383

76,934,945

West

Pharmaceutical

Services,

Inc.

.......

254,144

83,247,409

268,700,170

Machinery

—

0.1%

Lincoln

Electric

Holdings,

Inc.

...........

88,747

16,637,400

Media

—

1.9%

Liberty

Broadband

Corp.

Class

(a)

........

22,108

1,643,951

Liberty

Broadband

Corp.

Class

NVS

(a)

...

156,687

11,713,920

Nexstar

Media

Group,

Inc.

..............

70,888

11,198,177

Trade

Desk,

Inc.

(The)

Class

(a)

(b)

........

2,571,814

302,265,300

326,821,348

Metals

Mining

—

0.0%

Cleveland-Cliffs,

Inc.

(a)

(b)

...............

906,407

8,520,226

Oil,

Gas

Consumable

Fuels

—

3.9%

Antero

Midstream

Corp.

...............

747,211

11,275,414

Cheniere

Energy,

Inc.

.................

657,591

141,296,578

Civitas

Resources,

Inc.

................

158,022

7,248,469

EQT

Corp.

........................

210,239

9,694,120

Hess

Corp.

........................

1,041,630

138,547,206

Matador

Resources

Co.

...............

52,068

2,929,346

New

Fortress

Energy,

Inc.

Class

........

243,153

3,676,473

Permian

Resources

Corp.

Class

........

803,165

11,549,513

Targa

Resources

Corp.

................

1,246,119

222,432,242

Texas

Pacific

Land

Corp.

(b)

.............

108,171

119,632,799

Viper

Energy,

Inc.

Class

.............

170,511

8,366,975

676,649,135

Paper

Forest

Products

—

0.1%

Louisiana-Pacific

Corp.

................

251,673

26,060,739

Passenger

Airlines

—

0.0%

American

Airlines

Group,

Inc.

(a)

...........

271,142

4,726,005

Personal

Care

Products

—

0.2%

elf

Beauty,

Inc.

(a)

(b)

...................

309,664

38,878,315

Pharmaceuticals

—

0.3%

Intra-Cellular

Therapies,

Inc.

(a)

...........

593,100

49,535,712

Professional

Services

—

4.0%

Booz

Allen

Hamilton

Holding

Corp.

........

726,295

93,474,166

Broadridge

Financial

Solutions,

Inc.

.......

616,054

139,283,649

Security

Value

Professional

Services

(continued)

Dayforce,

Inc.

(a)

(b)

....................

90,897

6,602,758

Equifax,

Inc.

.......................

142,568

36,333,455

KBR,

Inc.

.........................

66,096

3,828,941

Paychex,

Inc.

......................

665,814

93,360,439

Paycom

Software,

Inc.

(b)

...............

185,394

38,000,208

Paycor

HCM,

Inc.

(a)

(b)

.................

45,673

848,148

Paylocity

Holding

Corp.

(a)

(b)

.............

249,857

49,838,976

TransUnion

........................

63,712

5,906,740

Verisk

Analytics,

Inc.

..................

811,691

223,564,052

691,041,532

Real

Estate

Management

Development

—

0.1%

Jones

Lang

LaSalle,

Inc.

(a)

..............

84,569

21,407,797

Retail

REITs

—

0.5%

Simon

Property

Group,

Inc.

.............

477,750

82,273,328

Semiconductors

Semiconductor

Equipment

—

2.7%

Astera

Labs,

Inc.

(a)

(b)

..................

31,080

4,116,546

Enphase

Energy,

Inc.

(a)

(b)

...............

759,262

52,146,114

Entegris,

Inc.

(b)

.....................

867,614

85,945,843

Lattice

Semiconductor

Corp.

(a)

(b)

..........

681,613

38,613,376

MKS

Instruments,

Inc.

................

22,718

2,371,532

Monolithic

Power

Systems,

Inc.

..........

270,593

160,109,878

Onto

Innovation,

Inc.

(a)

(b)

...............

72,782

12,130,576

Teradyne,

Inc.

......................

819,913

103,243,445

Universal

Display

Corp.

...............

135,224

19,769,749

478,447,059

Software

—

18.2%

Appfolio,

Inc.

Class

(a)

...............

130,481

32,192,272

AppLovin

Corp.

Class

(a)

..............

1,510,755

489,227,792

Bentley

Systems,

Inc.

Class

(b)

..........

807,534

37,711,838

BILL

Holdings,

Inc.

(a)

(b)

.................

145,917

12,360,629

Confluent,

Inc.

Class

(a)

..............

1,426,580

39,887,177

Datadog,

Inc.

Class

(a)

...............

1,721,878

246,039,148

DocuSign,

Inc.

(a)

....................

1,170,680

105,290,959

DoubleVerify

Holdings,

Inc.

(a)

............

467,695

8,984,421

Dropbox,

Inc.

Class

(a)

...............

423,302

12,715,992

Dynatrace,

Inc.

(a)

....................

1,699,294

92,356,629

Elastic

(a)

.......................

501,340

49,672,767

Fair

Isaac

Corp.

(a)

....................

115,624

230,199,290

Five9,

Inc.

(a)

(b)

......................

427,109

17,357,710

Gitlab,

Inc.

Class

(a)

(b)

................

702,675

39,595,736

Guidewire

Software,

Inc.

(a)

..............

214,636

36,183,337

HashiCorp,

Inc.

Class

(a)

..............

653,977

22,372,553

HubSpot,

Inc.

(a)

.....................

281,494

196,136,574

Manhattan

Associates,

Inc.

(a)

(b)

...........

353,116

95,426,068

MicroStrategy,

Inc.

Class

(a)

(b)

...........

59,749

17,304,505

nCino,

Inc.

(a)

(b)

......................

298,821

10,034,409

Nutanix,

Inc.

Class

(a)

................

409,296

25,040,729

Palantir

Technologies,

Inc.

Class

(a)

(b)

.....

11,590,144

876,562,591

Pegasystems,

Inc.

(b)

..................

257,466

23,995,831

Procore

Technologies,

Inc.

(a)

(b)

...........

616,105

46,164,748

PTC,

Inc.

(a)

(b)

.......................

414,480

76,210,438

RingCentral,

Inc.

Class

(a)

.............

474,956

16,628,210

SentinelOne,

Inc.

Class

(a)

.............

254,885

5,658,447

Smartsheet,

Inc.

Class

(a)

.............

780,549

43,734,161

Teradata

Corp.

(a)

....................

559,180

17,418,457

Tyler

Technologies,

Inc.

(a)

(b)

.............

207,638

119,732,376

UiPath,

Inc.

Class

(a)

(b)

...............

2,110,679

26,826,730

Unity

Software,

Inc.

(a)

(b)

................

772,451

17,356,974

Zscaler,

Inc.

(a)

(b)

.....................

536,535

96,796,279

3,183,175,777

Schedule

Investments

(unaudited)

(continued)

December

31,

2024

iShares

Russell

Mid-Cap

Growth

ETF

(Percentages

shown

are

based

Net

Assets)

Affiliates

Investments

issuers

considered

affiliate(s)

the

Fund

during

the period

ended

December

31,

2024

for

purposes

Section

2(a)(3)

the

Investment

Company

Act

1940,

amended,

were

follows:

Security

Value

Specialized

REITs

—

0.7%

Iron

Mountain,

Inc.

...................

958,037

100,699,269

Lamar

Advertising

Co.

Class

..........

126,617

15,414,354

116,113,623

Specialty

Retail

—

4.0%

Burlington

Stores,

Inc.

(a)

...............

365,309

104,134,984

CarMax,

Inc.

(a)

......................

63,558

5,196,502

Carvana

Co.

Class

(a)

(b)

...............

218,208

44,374,779

Dick's

Sporting

Goods,

Inc.

.............

29,432

6,735,219

Five

Below,

Inc.

(a)

....................

248,848

26,119,086

Floor

Decor

Holdings,

Inc.

Class

(a)

(b)

....

220,347

21,968,596

Murphy

USA,

Inc.

(b)

..................

105,491

52,930,109

(a)

(b)

...........................

16,756

6,594,994

Ross

Stores,

Inc.

....................

433,168

65,525,323

Tractor

Supply

Co.

...................

3,107,908

164,905,598

Ulta

Beauty,

Inc.

(a)

(b)

..................

234,589

102,029,794

Valvoline,

Inc.

(a)

(b)

....................

745,975

26,989,376

Williams-Sonoma,

Inc.

................

426,647

79,006,491

706,510,851

Technology

Hardware,

Storage

Peripherals

—

1.6%

HP,

Inc.

..........................

1,342,877

43,818,077

NetApp,

Inc.

.......................

531,999

61,754,444

Pure

Storage,

Inc.

Class

(a)

(b)

...........

1,542,468

94,753,809

Super

Micro

Computer,

Inc.

(a)

(b)

...........

2,850,288

86,876,778

287,203,108

Textiles,

Apparel

Luxury

Goods

—

1.1%

(a)

Crocs,

Inc.

(b)

.......................

62,346

6,828,758

Deckers

Outdoor

Corp.

................

874,170

177,535,185

Skechers

USA,

Inc.

Class

............

66,067

4,442,345

188,806,288

Trading

Companies

Distributors

—

3.2%

Core

Main,

Inc.

Class

(a)

(b)

...........

726,307

36,976,289

Fastenal

Co.

.......................

2,779,683

199,887,005

Security

Value

Trading

Companies

Distributors

(continued)

Ferguson

Enterprises,

Inc.

..............

77,974

13,533,947

SiteOne

Landscape

Supply,

Inc.

(a)

(b)

........

95,057

12,525,661

United

Rentals,

Inc.

..................

91,280

64,301,283

Grainger,

Inc.

...................

217,838

229,612,144

556,836,329

Total

Long-Term

Investments

—

(Cost:

14,513,446,135

)

............................

17,452,383,699

Short-Term

Securities

Money

Market

Funds

—

4.2%

(c)(d)

BlackRock

Cash

Funds:

Institutional,

Agency

4.63

(e)

..................

710,790,230

711,145,624

BlackRock

Cash

Funds:

Treasury,

Agency

4.44

...................

26,681,094

Total

Short-Term

Securities

—

(Cost:

737,357,873

)

..............................

737,826,718

Total

Investments

—

104

(Cost:

15,250,804,008

)

............................

18,190,210,417

Liabilities

Excess

Other

Assets

—

(

4.1

)

.............

(

708,956,603

)

Net

Assets

—

100.0%

...............................

17,481,253,814

(a)

Non-income

producing

security.

(b)

All

portion

this

security

loan.

(c)

Affiliate

the

Fund.

(d)

Annualized

7-day

yield

period

end.

(e)

All

portion

this

security

was

purchased

with

the

cash

collateral

from

loaned

securities.

Affiliated

Issuer

Value

03/31/24

Purchases

Cost

Proceeds

from

Sales

Net

Realized

Gain

(Loss)

Change

Unrealized

Appreciation

(Depreciation)

Value

12/31/24

Held

12/31/24

Income

Capital

Gain

Distributions

from

Underlying

Funds

BlackRock

Cash

Funds:

Institutional,

Agency

..............

584,383,332

126,794,540

(a)

—

4,410

(

36,658

)

711,145,624

710,790,230

1,673,920

(b)

—

BlackRock

Cash

Funds:

Treasury,

Agency

20,637,365

6,043,729

(a)

—

26,681,094

850,541

—

4,410

(

36,658

)

737,826,718

2,524,461

—

(a)

Represents

net

amount

purchased

(sold).

(b)

All

portion

represents

securities

lending

income

earned

from

the

reinvestment

cash

collateral

from

loaned

securities,

net

collateral

investment

fees,

and

other

payments

and

from

borrowers

securities.

Schedule

Investments

(unaudited)

(continued)

December

31,

2024

iShares

Russell

Mid-Cap

Growth

ETF

Fair

Value

Hierarchy

Period

End

Various

inputs

are

used

determining

the

fair

value

financial

instruments

the

measurement

date.

These

inputs

valuation

techniques

are

categorized

into

fair

value

hierarchy

consisting

three

broad

levels

for

financial

reporting

purposes

follows:

Level

—

Unadjusted

price

quotations

active

markets/exchanges

that

the

Fund

has

the

ability

access

for

identical

assets

liabilities;

Level

—

Inputs

other

than

quoted

prices

included

within

Level

that

are

observable

for

the

asset

liability,

either

directly

indirectly;

and

Level

—

Inputs

that

are

unobservable

and

significant

the

entire

fair

value

measurement

for

the

asset

liability

(including

the

Valuation

Committee's

assumptions

used

determining

the

fair

value

financial

instruments).

The

hierarchy

gives

the

highest

priority

unadjusted

quoted

prices

active

markets

for

identical

assets

liabilities

(Level

measurements)

and

the

lowest

priority

unobservable

inputs

(Level

measurements).

Accordingly,

the

degree

judgment

exercised

determining

fair

value

greatest

for

instruments

categorized

Level

The

inputs

used

measure

fair

value

may

fall

into

different

levels

the

fair

value

hierarchy.

such

cases,

for

disclosure

purposes,

the

fair

value

hierarchy

classification

determined

based

the

lowest

level

input

that

significant

the

fair

value

measurement

its

entirety.

Investments

classified

within

Level

have

significant

unobservable

inputs

used

the

Valuation

Committee

determining

the

price

for

Fair

Valued

Investments.

Level

investments

include

equity

debt

issued

privately

held

companies

funds.

There

may

not

secondary

market,

and/

there

are

limited

number

investors.

The

categorization

value

determined

for

financial

instruments

based

the

pricing

transparency

the

financial

instruments

and

not

necessarily

indication

the

risks

associated

with

investing

those

securities.

For

information

about

the

Fund’s

policy

regarding

valuation

financial

instruments,

refer

its

most

recent

financial

statements.

The

following

table

summarizes

the

Fund’s

financial

instruments

categorized

the

fair

value

hierarchy.

The

breakdown

the

Fund's

financial

instruments

into

major