T.

ROWE

PRICE

Equity

Index

500

Fund

March

31,

2024

(Unaudited)

1

Portfolio

of

Investments

‡

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

COMMON

STOCKS

99.6%

COMMUNICATION

SERVICES

8.9%

Diversified

Telecommunication

Services

0.7%

AT&T 

5,035,301‌

88,621‌

Verizon

Communications 

2,959,984‌

124,201‌

212,822‌

Entertainment

1.3%

Electronic

Arts 

170,997‌

22,686‌

Live

Nation

Entertainment (1)

99,001‌

10,471‌

Netflix (1)

304,577‌

184,979‌

Take-Two

Interactive

Software (1)

111,248‌

16,519‌

Walt

Disney 

1,291,189‌

157,990‌

Warner

Bros

Discovery (1)

1,549,811‌

13,530‌

406,175‌

Interactive

Media

&

Services

6.1%

Alphabet,

Class

A (1)

4,145,856‌

625,734‌

Alphabet,

Class

C (1)

3,470,497‌

528,418‌

Match

Group (1)

191,096‌

6,933‌

Meta

Platforms,

Class

A 

1,547,726‌

751,545‌

1,912,630‌

Media

0.6%

Charter

Communications,

Class

A (1)

70,278‌

20,425‌

Comcast,

Class

A 

2,789,695‌

120,933‌

Fox,

Class

A 

172,282‌

5,387‌

Fox,

Class

B 

92,057‌

2,635‌

Interpublic

Group 

267,225‌

8,720‌

News,

Class

A 

267,999‌

7,016‌

News,

Class

B (2)

79,557‌

2,153‌

Omnicom

Group 

138,188‌

13,371‌

Paramount

Global,

Class

B 

337,076‌

3,967‌

184,607‌

Wireless

Telecommunication

Services

0.2%

T-Mobile

U.S. 

366,616‌

59,839‌

59,839‌

Total

Communication

Services

2,776,073‌

CONSUMER

DISCRETIONARY

10.3%

Automobile

Components

0.1%

Aptiv (1)

197,552‌

15,735‌

BorgWarner 

168,622‌

5,858‌

21,593‌

T.

ROWE

PRICE

Equity

Index

500

Fund

2

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

Automobiles

1.3%

Ford

Motor 

2,762,341‌

36,684‌

General

Motors 

810,426‌

36,753‌

Tesla (1)

1,949,402‌

342,685‌

416,122‌

Broadline

Retail

3.8%

Amazon.com (1)

6,432,193‌

1,160,239‌

eBay 

365,544‌

19,294‌

Etsy (1)

84,115‌

5,780‌

1,185,313‌

Distributors

0.1%

Genuine

Parts 

97,895‌

15,167‌

LKQ 

186,721‌

9,973‌

Pool 

27,233‌

10,988‌

36,128‌

Hotels,

Restaurants

&

Leisure

2.0%

Airbnb,

Class

A (1)

306,932‌

50,631‌

Booking

Holdings 

24,571‌

89,141‌

Caesars

Entertainment (1)

151,851‌

6,642‌

Carnival (1)

706,036‌

11,537‌

Chipotle

Mexican

Grill (1)

19,275‌

56,028‌

Darden

Restaurants 

84,008‌

14,042‌

Domino's

Pizza 

24,345‌

12,097‌

Expedia

Group (1)

94,069‌

12,958‌

Hilton

Worldwide

Holdings 

177,042‌

37,765‌

Las

Vegas

Sands 

257,731‌

13,325‌

Marriott

International,

Class

A 

172,931‌

43,632‌

McDonald's 

510,587‌

143,960‌

MGM

Resorts

International (1)

193,734‌

9,146‌

Norwegian

Cruise

Line

Holdings (1)(2)

302,698‌

6,335‌

Royal

Caribbean

Cruises (1)

164,675‌

22,891‌

Starbucks 

795,258‌

72,679‌

Wynn

Resorts 

66,930‌

6,842‌

Yum!

Brands 

196,965‌

27,309‌

636,960‌

Household

Durables

0.4%

DR

Horton 

210,940‌

34,710‌

Garmin 

106,875‌

15,910‌

Lennar,

Class

A 

175,774‌

30,230‌

Mohawk

Industries (1)

37,869‌

4,957‌

NVR (1)

2,238‌

18,128‌

PulteGroup 

151,881‌

18,320‌

122,255‌

T.

ROWE

PRICE

Equity

Index

500

Fund

3

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

Leisure

Products

0.0%

Hasbro 

93,009‌

5,257‌

5,257‌

Specialty

Retail

2.1%

AutoZone (1)

12,141‌

38,264‌

Bath

&

Body

Works 

158,542‌

7,930‌

Best

Buy 

135,180‌

11,089‌

CarMax (1)(2)

111,948‌

9,752‌

Home

Depot 

700,352‌

268,655‌

Lowe's 

405,176‌

103,211‌

O'Reilly

Automotive (1)

41,474‌

46,819‌

Ross

Stores 

237,883‌

34,912‌

TJX 

803,276‌

81,468‌

Tractor

Supply 

75,511‌

19,763‌

Ulta

Beauty (1)

34,383‌

17,978‌

639,841‌

Textiles,

Apparel

&

Luxury

Goods

0.5%

Deckers

Outdoor (1)

17,976‌

16,920‌

Lululemon

Athletica (1)

80,889‌

31,599‌

NIKE,

Class

B 

859,355‌

80,762‌

Ralph

Lauren 

27,665‌

5,195‌

Tapestry 

159,762‌

7,586‌

VF 

233,193‌

3,577‌

145,639‌

Total

Consumer

Discretionary

3,209,108‌

CONSUMER

STAPLES

5.9%

Beverages

1.4%

Brown-Forman,

Class

B 

129,180‌

6,668‌

Coca-Cola 

2,739,101‌

167,578‌

Constellation

Brands,

Class

A 

113,565‌

30,862‌

Keurig

Dr

Pepper 

727,772‌

22,321‌

Molson

Coors

Beverage,

Class

B 

129,176‌

8,687‌

Monster

Beverage (1)

519,038‌

30,769‌

PepsiCo 

967,400‌

169,305‌

436,190‌

Consumer

Staples

Distribution

&

Retail

1.8%

Costco

Wholesale 

312,266‌

228,775‌

Dollar

General 

154,604‌

24,127‌

Dollar

Tree (1)

145,992‌

19,439‌

Kroger 

467,454‌

26,706‌

Sysco 

354,272‌

28,760‌

Target 

324,185‌

57,449‌

Walgreens

Boots

Alliance 

500,541‌

10,857‌

T.

ROWE

PRICE

Equity

Index

500

Fund

4

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

Walmart 

3,012,993‌

181,292‌

577,405‌

Food

Products

0.8%

Archer-Daniels-Midland 

372,578‌

23,402‌

Bunge

Global 

102,827‌

10,542‌

Campbell

Soup 

140,043‌

6,225‌

Conagra

Brands 

333,567‌

9,887‌

General

Mills 

398,579‌

27,889‌

Hershey 

104,701‌

20,364‌

Hormel

Foods 

204,555‌

7,137‌

J

M

Smucker 

74,066‌

9,323‌

Kellanova 

186,267‌

10,671‌

Kraft

Heinz 

556,923‌

20,550‌

Lamb

Weston

Holdings 

101,164‌

10,777‌

McCormick 

175,423‌

13,474‌

Mondelez

International,

Class

A 

945,731‌

66,201‌

Tyson

Foods,

Class

A 

199,087‌

11,692‌

248,134‌

Household

Products

1.2%

Church

&

Dwight 

172,081‌

17,950‌

Clorox 

86,572‌

13,255‌

Colgate-Palmolive 

578,249‌

52,071‌

Kimberly-Clark 

237,448‌

30,714‌

Procter

&

Gamble 

1,655,778‌

268,650‌

382,640‌

Personal

Care

Products

0.2%

Estee

Lauder,

Class

A 

164,130‌

25,300‌

Kenvue 

1,217,834‌

26,135‌

51,435‌

Tobacco

0.5%

Altria

Group 

1,242,093‌

54,180‌

Philip

Morris

International 

1,093,181‌

100,157‌

154,337‌

Total

Consumer

Staples

1,850,141‌

ENERGY

3.9%

Energy

Equipment

&

Services

0.3%

Baker

Hughes 

702,921‌

23,548‌

Halliburton 

625,300‌

24,649‌

Schlumberger 

1,003,191‌

54,985‌

103,182‌

Oil,

Gas

&

Consumable

Fuels

3.6%

APA 

254,895‌

8,763‌

Chevron 

1,220,706‌

192,554‌

T.

ROWE

PRICE

Equity

Index

500

Fund

5

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

ConocoPhillips 

827,592‌

105,336‌

Coterra

Energy 

529,959‌

14,775‌

Devon

Energy 

447,520‌

22,457‌

Diamondback

Energy 

126,500‌

25,068‌

EOG

Resources 

409,552‌

52,357‌

EQT 

291,138‌

10,792‌

Exxon

Mobil 

2,794,155‌

324,793‌

Hess 

194,235‌

29,648‌

Kinder

Morgan 

1,366,450‌

25,061‌

Marathon

Oil 

414,072‌

11,735‌

Marathon

Petroleum 

258,428‌

52,073‌

Occidental

Petroleum 

463,940‌

30,151‌

ONEOK 

409,294‌

32,813‌

Phillips

66 

301,959‌

49,322‌

Pioneer

Natural

Resources 

163,881‌

43,019‌

Targa

Resources 

155,682‌

17,435‌

Valero

Energy 

240,064‌

40,977‌

Williams 

854,706‌

33,308‌

1,122,437‌

Total

Energy

1,225,619‌

FINANCIALS

13.1%

Banks

3.3%

Bank

of

America 

4,846,383‌

183,775‌

Citigroup 

1,343,793‌

84,981‌

Citizens

Financial

Group 

329,370‌

11,953‌

Comerica 

92,436‌

5,083‌

Fifth

Third

Bancorp 

479,154‌

17,829‌

Huntington

Bancshares 

1,011,035‌

14,104‌

JPMorgan

Chase 

2,034,085‌

407,427‌

KeyCorp 

659,765‌

10,431‌

M&T

Bank 

116,770‌

16,983‌

PNC

Financial

Services

Group 

279,789‌

45,214‌

Regions

Financial 

649,322‌

13,662‌

Truist

Financial 

936,914‌

36,521‌

U.S.

Bancorp 

1,093,526‌

48,880‌

Wells

Fargo 

2,533,345‌

146,833‌

1,043,676‌

Capital

Markets

2.8%

Ameriprise

Financial 

71,104‌

31,175‌

Bank

of

New

York

Mellon 

540,348‌

31,135‌

BlackRock 

98,181‌

81,853‌

Blackstone 

505,039‌

66,347‌

Cboe

Global

Markets 

73,706‌

13,542‌

Charles

Schwab 

1,044,970‌

75,593‌

T.

ROWE

PRICE

Equity

Index

500

Fund

6

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

CME

Group 

252,803‌

54,426‌

FactSet

Research

Systems 

26,521‌

12,051‌

Franklin

Resources 

217,894‌

6,125‌

Goldman

Sachs

Group 

229,645‌

95,920‌

Intercontinental

Exchange 

401,935‌

55,238‌

Invesco 

320,852‌

5,323‌

MarketAxess

Holdings 

26,555‌

5,822‌

Moody's 

110,540‌

43,446‌

Morgan

Stanley 

879,987‌

82,860‌

MSCI 

55,565‌

31,141‌

Nasdaq 

265,643‌

16,762‌

Northern

Trust 

144,531‌

12,852‌

Raymond

James

Financial 

131,231‌

16,853‌

S&P

Global 

225,705‌

96,026‌

State

Street 

217,354‌

16,806‌

T.

Rowe

Price

Group (3)

156,079‌

19,029‌

870,325‌

Consumer

Finance

0.5%

American

Express 

404,200‌

92,032‌

Capital

One

Financial 

267,531‌

39,833‌

Discover

Financial

Services 

174,652‌

22,895‌

Synchrony

Financial 

291,366‌

12,564‌

167,324‌

Financial

Services

4.3%

Berkshire

Hathaway,

Class

B (1)

1,279,800‌

538,181‌

Corpay (1)

50,909‌

15,707‌

Fidelity

National

Information

Services 

416,335‌

30,884‌

Fiserv (1)

421,444‌

67,355‌

Global

Payments 

183,978‌

24,591‌

Jack

Henry

&

Associates 

51,546‌

8,955‌

Mastercard,

Class

A 

580,548‌

279,575‌

PayPal

Holdings (1)

757,234‌

50,727‌

Visa,

Class

A 

1,112,864‌

310,578‌

1,326,553‌

Insurance

2.2%

Aflac 

375,249‌

32,219‌

Allstate 

183,865‌

31,811‌

American

International

Group 

494,953‌

38,691‌

Aon,

Class

A 

140,622‌

46,928‌

Arch

Capital

Group (1)

263,726‌

24,379‌

Arthur

J

Gallagher 

152,857‌

38,220‌

Assurant 

37,315‌

7,024‌

Brown

&

Brown 

166,725‌

14,595‌

Chubb 

286,463‌

74,231‌

T.

ROWE

PRICE

Equity

Index

500

Fund

7

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

Cincinnati

Financial 

109,543‌

13,602‌

Everest

Group 

30,295‌

12,042‌

Globe

Life 

59,735‌

6,951‌

Hartford

Financial

Services

Group 

211,551‌

21,800‌

Loews 

127,746‌

10,001‌

Marsh

&

McLennan 

346,211‌

71,313‌

MetLife 

436,837‌

32,374‌

Principal

Financial

Group 

154,956‌

13,374‌

Progressive 

412,204‌

85,252‌

Prudential

Financial 

253,662‌

29,780‌

Travelers 

160,444‌

36,925‌

W

R

Berkley 

142,200‌

12,576‌

Willis

Towers

Watson 

72,620‌

19,971‌

674,059‌

Total

Financials

4,081,937‌

HEALTH

CARE

12.3%

Biotechnology

1.9%

AbbVie 

1,242,481‌

226,256‌

Amgen 

376,708‌

107,106‌

Biogen (1)

101,236‌

21,829‌

Gilead

Sciences 

874,959‌

64,091‌

Incyte (1)

132,221‌

7,533‌

Moderna (1)

234,314‌

24,968‌

Regeneron

Pharmaceuticals (1)

74,204‌

71,421‌

Vertex

Pharmaceuticals (1)

180,925‌

75,628‌

598,832‌

Health

Care

Equipment

&

Supplies

2.6%

Abbott

Laboratories 

1,222,315‌

138,928‌

Align

Technology (1)

49,731‌

16,308‌

Baxter

International 

354,232‌

15,140‌

Becton

Dickinson

&

Company 

203,741‌

50,416‌

Boston

Scientific (1)

1,028,122‌

70,416‌

Cooper 

138,314‌

14,033‌

DENTSPLY

SIRONA 

151,853‌

5,040‌

Dexcom (1)

271,448‌

37,650‌

Edwards

Lifesciences (1)

426,034‌

40,712‌

GE

HealthCare

Technologies 

298,183‌

27,108‌

Hologic (1)

171,012‌

13,332‌

IDEXX

Laboratories (1)

58,379‌

31,521‌

Insulet (1)

49,432‌

8,473‌

Intuitive

Surgical (1)

248,096‌

99,013‌

Medtronic 

934,184‌

81,414‌

ResMed 

103,477‌

20,491‌

STERIS 

68,995‌

15,511‌

T.

ROWE

PRICE

Equity

Index

500

Fund

8

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

Stryker 

238,141‌

85,223‌

Teleflex 

33,229‌

7,515‌

Zimmer

Biomet

Holdings 

147,186‌

19,426‌

797,670‌

Health

Care

Providers

&

Services

2.6%

Cardinal

Health 

173,444‌

19,408‌

Cencora 

117,140‌

28,464‌

Centene (1)

375,327‌

29,456‌

Cigna

Group 

205,464‌

74,622‌

CVS

Health 

883,905‌

70,500‌

DaVita (1)

38,974‌

5,380‌

Elevance

Health 

165,470‌

85,803‌

HCA

Healthcare 

138,823‌

46,302‌

Henry

Schein (1)

91,058‌

6,877‌

Humana 

86,320‌

29,929‌

Laboratory

Corp.

of

America

Holdings 

59,892‌

13,084‌

McKesson 

93,313‌

50,095‌

Molina

Healthcare (1)

40,713‌

16,726‌

Quest

Diagnostics 

78,736‌

10,481‌

UnitedHealth

Group 

650,740‌

321,921‌

Universal

Health

Services,

Class

B 

42,538‌

7,761‌

816,809‌

Life

Sciences

Tools

&

Services

1.4%

Agilent

Technologies 

206,475‌

30,044‌

Bio-Rad

Laboratories,

Class

A (1)

14,601‌

5,050‌

Bio-Techne 

111,502‌

7,849‌

Charles

River

Laboratories

International (1)

35,682‌

9,668‌

Danaher 

463,019‌

115,625‌

Illumina (1)

110,899‌

15,229‌

IQVIA

Holdings (1)

128,651‌

32,534‌

Mettler-Toledo

International (1)

15,287‌

20,351‌

Revvity 

86,114‌

9,042‌

Thermo

Fisher

Scientific 

271,994‌

158,086‌

Waters (1)

41,283‌

14,211‌

West

Pharmaceutical

Services 

51,681‌

20,451‌

438,140‌

Pharmaceuticals

3.8%

Bristol-Myers

Squibb 

1,428,685‌

77,478‌

Catalent (1)

128,066‌

7,229‌

Eli

Lilly 

560,952‌

436,398‌

Johnson

&

Johnson 

1,693,853‌

267,951‌

Merck 

1,783,325‌

235,310‌

Pfizer 

3,975,725‌

110,326‌

Viatris 

837,782‌

10,003‌

T.

ROWE

PRICE

Equity

Index

500

Fund

9

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

Zoetis 

322,385‌

54,551‌

1,199,246‌

Total

Health

Care

3,850,697‌

INDUSTRIALS

&

BUSINESS

SERVICES

8.9%

Aerospace

&

Defense

1.5%

Axon

Enterprise (1)

49,177‌

15,387‌

Boeing (1)

402,705‌

77,718‌

General

Dynamics 

160,021‌

45,204‌

Howmet

Aerospace 

273,167‌

18,693‌

Huntington

Ingalls

Industries 

28,185‌

8,215‌

L3Harris

Technologies 

133,177‌

28,380‌

Lockheed

Martin 

151,052‌

68,709‌

Northrop

Grumman 

99,551‌

47,651‌

RTX 

932,023‌

90,900‌

Textron 

136,832‌

13,126‌

TransDigm

Group 

39,256‌

48,348‌

462,331‌

Air

Freight

&

Logistics

0.4%

CH

Robinson

Worldwide 

82,991‌

6,319‌

Expeditors

International

of

Washington 

102,580‌

12,471‌

FedEx 

162,473‌

47,075‌

United

Parcel

Service,

Class

B 

507,820‌

75,477‌

141,342‌

Building

Products

0.5%

A.O.

Smith 

85,654‌

7,663‌

Allegion 

62,182‌

8,376‌

Builders

FirstSource (1)

86,170‌

17,971‌

Carrier

Global 

589,469‌

34,266‌

Johnson

Controls

International 

478,031‌

31,225‌

Masco 

156,696‌

12,360‌

Trane

Technologies 

160,413‌

48,156‌

160,017‌

Commercial

Services

&

Supplies

0.6%

Cintas 

60,814‌

41,781‌

Copart (1)

613,900‌

35,557‌

Republic

Services 

143,712‌

27,512‌

Rollins 

195,879‌

9,064‌

Veralto 

153,036‌

13,568‌

Waste

Management 

257,395‌

54,864‌

182,346‌

Construction

&

Engineering

0.1%

Quanta

Services 

102,651‌

26,669‌

26,669‌

T.

ROWE

PRICE

Equity

Index

500

Fund

10

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

Electrical

Equipment

0.7%

AMETEK 

162,165‌

29,660‌

Eaton 

281,203‌

87,927‌

Emerson

Electric 

402,939‌

45,701‌

Generac

Holdings (1)

42,798‌

5,399‌

Hubbell 

37,442‌

15,540‌

Rockwell

Automation 

80,116‌

23,340‌

207,567‌

Ground

Transportation

1.1%

CSX 

1,387,772‌

51,445‌

JB

Hunt

Transport

Services 

56,883‌

11,334‌

Norfolk

Southern 

158,835‌

40,482‌

Old

Dominion

Freight

Line 

125,740‌

27,576‌

Uber

Technologies (1)

1,448,949‌

111,554‌

Union

Pacific 

429,369‌

105,595‌

347,986‌

Industrial

Conglomerates

1.0%

3M 

387,988‌

41,154‌

General

Electric 

766,156‌

134,484‌

Honeywell

International 

464,240‌

95,285‌

Roper

Technologies 

75,029‌

42,079‌

313,002‌

Machinery

1.8%

Caterpillar 

358,133‌

131,231‌

Cummins 

95,709‌

28,201‌

Deere 

182,894‌

75,122‌

Dover 

97,686‌

17,309‌

Fortive 

245,468‌

21,115‌

IDEX 

53,383‌

13,027‌

Illinois

Tool

Works 

192,291‌

51,597‌

Ingersoll

Rand 

284,460‌

27,009‌

Nordson 

38,335‌

10,524‌

Otis

Worldwide 

287,582‌

28,548‌

PACCAR 

367,408‌

45,518‌

Parker-Hannifin 

90,230‌

50,149‌

Pentair 

116,586‌

9,961‌

Snap-on 

36,840‌

10,913‌

Stanley

Black

&

Decker 

108,376‌

10,613‌

Westinghouse

Air

Brake

Technologies 

125,123‌

18,228‌

Xylem 

168,396‌

21,764‌

570,829‌

Passenger

Airlines

0.2%

American

Airlines

Group (1)

460,549‌

7,069‌

Delta

Air

Lines 

449,414‌

21,514‌

T.

ROWE

PRICE

Equity

Index

500

Fund

11

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

Southwest

Airlines 

421,772‌

12,312‌

United

Airlines

Holdings (1)

229,625‌

10,994‌

51,889‌

Professional

Services

0.7%

Automatic

Data

Processing 

288,793‌

72,123‌

Broadridge

Financial

Solutions 

82,167‌

16,833‌

Dayforce (1)

108,795‌

7,203‌

Equifax 

86,503‌

23,141‌

Jacobs

Solutions 

87,903‌

13,513‌

Leidos

Holdings 

96,306‌

12,625‌

Paychex 

225,899‌

27,741‌

Paycom

Software 

35,050‌

6,975‌

Robert

Half (2)

73,817‌

5,852‌

Verisk

Analytics 

102,480‌

24,158‌

210,164‌

Trading

Companies

&

Distributors

0.3%

Fastenal 

401,497‌

30,971‌

United

Rentals 

47,621‌

34,340‌

WW

Grainger 

31,037‌

31,574‌

96,885‌

Total

Industrials

&

Business

Services

2,771,027‌

INFORMATION

TECHNOLOGY

29.3%

Communications

Equipment

0.8%

Arista

Networks (1)

176,977‌

51,320‌

Cisco

Systems 

2,860,448‌

142,765‌

F5 (1)

42,534‌

8,064‌

Juniper

Networks 

222,459‌

8,244‌

Motorola

Solutions 

116,581‌

41,384‌

251,777‌

Electronic

Equipment,

Instruments

&

Components

0.6%

Amphenol,

Class

A 

422,740‌

48,763‌

CDW 

94,680‌

24,217‌

Corning 

540,410‌

17,812‌

Jabil 

90,693‌

12,149‌

Keysight

Technologies (1)

124,039‌

19,397‌

TE

Connectivity 

218,369‌

31,716‌

Teledyne

Technologies (1)

32,948‌

14,145‌

Trimble (1)

175,650‌

11,305‌

Zebra

Technologies,

Class

A (1)

35,839‌

10,803‌

190,307‌

IT

Services

1.2%

Accenture,

Class

A 

441,313‌

152,964‌

Akamai

Technologies (1)

106,248‌

11,556‌

T.

ROWE

PRICE

Equity

Index

500

Fund

12

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

Cognizant

Technology

Solutions,

Class

A 

352,317‌

25,821‌

EPAM

Systems (1)

40,281‌

11,124‌

Gartner (1)

54,782‌

26,113‌

International

Business

Machines 

644,361‌

123,047‌

VeriSign (1)

62,018‌

11,753‌

362,378‌

Semiconductors

&

Semiconductor

Equipment

10.2%

Advanced

Micro

Devices (1)

1,137,112‌

205,237‌

Analog

Devices 

349,900‌

69,207‌

Applied

Materials 

587,264‌

121,111‌

Broadcom 

309,574‌

410,312‌

Enphase

Energy (1)

95,309‌

11,531‌

First

Solar (1)

74,583‌

12,590‌

Intel 

2,976,537‌

131,474‌

KLA 

95,448‌

66,677‌

Lam

Research 

92,529‌

89,898‌

Microchip

Technology 

380,112‌

34,100‌

Micron

Technology 

778,194‌

91,741‌

Monolithic

Power

Systems 

33,669‌

22,808‌

NVIDIA 

1,738,040‌

1,570,423‌

NXP

Semiconductors 

181,041‌

44,857‌

ON

Semiconductor (1)

304,286‌

22,380‌

Qorvo (1)

67,895‌

7,796‌

QUALCOMM 

785,648‌

133,010‌

Skyworks

Solutions 

112,810‌

12,220‌

Teradyne (2)

106,727‌

12,042‌

Texas

Instruments 

640,437‌

111,571‌

3,180,985‌

Software

10.5%

Adobe (1)

318,147‌

160,537‌

ANSYS (1)

60,628‌

21,048‌

Autodesk (1)

150,153‌

39,103‌

Cadence

Design

Systems (1)

191,047‌

59,469‌

Fair

Isaac (1)

17,627‌

22,027‌

Fortinet (1)

447,809‌

30,590‌

Gen

Digital 

400,381‌

8,968‌

Intuit 

197,077‌

128,100‌

Microsoft 

5,228,425‌

2,199,703‌

Oracle 

1,122,323‌

140,975‌

Palo

Alto

Networks (1)

221,363‌

62,896‌

PTC (1)

84,524‌

15,970‌

Salesforce 

681,249‌

205,178‌

ServiceNow (1)

144,344‌

110,048‌

Synopsys (1)

107,451‌

61,408‌

T.

ROWE

PRICE

Equity

Index

500

Fund

13

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

Tyler

Technologies (1)

29,380‌

12,487‌

3,278,507‌

Technology

Hardware,

Storage

&

Peripherals

6.0%

Apple 

10,213,827‌

1,751,467‌

Hewlett

Packard

Enterprise 

925,116‌

16,402‌

HP 

616,108‌

18,619‌

NetApp 

145,776‌

15,302‌

Seagate

Technology

Holdings 

136,554‌

12,706‌

Super

Micro

Computer (1)

35,338‌

35,693‌

Western

Digital (1)

227,040‌

15,493‌

1,865,682‌

Total

Information

Technology

9,129,636‌

MATERIALS

2.4%

Chemicals

1.6%

Air

Products

&

Chemicals 

156,053‌

37,807‌

Albemarle (2)

81,902‌

10,790‌

Celanese 

70,660‌

12,144‌

CF

Industries

Holdings 

133,344‌

11,096‌

Corteva 

495,200‌

28,558‌

Dow 

492,845‌

28,550‌

DuPont

de

Nemours 

302,288‌

23,176‌

Eastman

Chemical 

82,688‌

8,287‌

Ecolab 

178,257‌

41,159‌

FMC 

89,037‌

5,672‌

International

Flavors

&

Fragrances 

178,255‌

15,328‌

Linde 

341,346‌

158,494‌

LyondellBasell

Industries,

Class

A 

178,975‌

18,306‌

Mosaic 

229,846‌

7,461‌

PPG

Industries 

164,738‌

23,870‌

Sherwin-Williams 

165,374‌

57,439‌

488,137‌

Construction

Materials

0.2%

Martin

Marietta

Materials 

43,650‌

26,799‌

Vulcan

Materials 

93,870‌

25,619‌

52,418‌

Containers

&

Packaging

0.2%

Amcor 

1,021,087‌

9,710‌

Avery

Dennison 

56,215‌

12,550‌

Ball 

221,449‌

14,917‌

International

Paper 

241,430‌

9,421‌

Packaging

Corp.

of

America 

62,555‌

11,872‌

Westrock 

178,828‌

8,843‌

67,313‌

T.

ROWE

PRICE

Equity

Index

500

Fund

14

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

Metals

&

Mining

0.4%

Freeport-McMoRan 

1,007,246‌

47,361‌

Newmont 

809,825‌

29,024‌

Nucor 

172,712‌

34,180‌

Steel

Dynamics 

107,283‌

15,902‌

126,467‌

Total

Materials

734,335‌

REAL

ESTATE

2.4%

Health

Care

Real

Estate

Investment

Trusts

0.2%

Healthpeak

Properties,

REIT 

501,681‌

9,407‌

Ventas,

REIT 

280,922‌

12,231‌

Welltower,

REIT 

388,814‌

36,331‌

57,969‌

Hotel

&

Resort

Real

Estate

Investment

Trusts

0.0%

Host

Hotels

&

Resorts,

REIT 

492,291‌

10,181‌

10,181‌

Industrial

Real

Estate

Investment

Trusts

0.3%

Prologis,

REIT 

650,725‌

84,737‌

84,737‌

Office

Real

Estate

Investment

Trusts

0.1%

Alexandria

Real

Estate

Equities,

REIT 

109,454‌

14,110‌

Boston

Properties,

REIT 

101,842‌

6,651‌

20,761‌

Real

Estate

Management

&

Development

0.2%

CBRE

Group,

Class

A (1)

214,533‌

20,861‌

CoStar

Group (1)

288,507‌

27,870‌

48,731‌

Residential

Real

Estate

Investment

Trusts

0.3%

AvalonBay

Communities,

REIT 

99,150‌

18,398‌

Camden

Property

Trust,

REIT 

74,512‌

7,332‌

Equity

Residential,

REIT 

242,677‌

15,316‌

Essex

Property

Trust,

REIT 

44,826‌

10,974‌

Invitation

Homes,

REIT 

401,693‌

14,304‌

Mid-America

Apartment

Communities,

REIT 

81,501‌

10,724‌

UDR,

REIT 

211,123‌

7,898‌

84,946‌

Retail

Real

Estate

Investment

Trusts

0.3%

Federal

Realty

Investment

Trust,

REIT 

51,597‌

5,269‌

Kimco

Realty,

REIT 

464,039‌

9,100‌

Realty

Income,

REIT 

584,315‌

31,611‌

Regency

Centers,

REIT 

116,228‌

7,039‌

T.

ROWE

PRICE

Equity

Index

500

Fund

15

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

Simon

Property

Group,

REIT 

229,215‌

35,870‌

88,889‌

Specialized

Real

Estate

Investment

Trusts

1.0%

American

Tower,

REIT 

327,335‌

64,678‌

Crown

Castle,

REIT 

304,876‌

32,265‌

Digital

Realty

Trust,

REIT 

212,816‌

30,654‌

Equinix,

REIT 

65,966‌

54,444‌

Extra

Space

Storage,

REIT 

147,584‌

21,695‌

Iron

Mountain,

REIT 

203,905‌

16,355‌

Public

Storage,

REIT 

111,144‌

32,238‌

SBA

Communications,

REIT 

75,399‌

16,339‌

VICI

Properties,

REIT 

725,553‌

21,614‌

Weyerhaeuser,

REIT 

509,852‌

18,309‌

308,591‌

Total

Real

Estate

704,805‌

UTILITIES

2.2%

Electric

Utilities

1.5%

Alliant

Energy 

179,889‌

9,066‌

American

Electric

Power 

369,432‌

31,808‌

Constellation

Energy 

224,395‌

41,480‌

Duke

Energy 

541,257‌

52,345‌

Edison

International 

267,714‌

18,935‌

Entergy 

148,819‌

15,727‌

Evergy 

162,742‌

8,687‌

Eversource

Energy 

245,623‌

14,681‌

Exelon 

703,121‌

26,416‌

FirstEnergy 

360,574‌

13,925‌

NextEra

Energy 

1,444,838‌

92,340‌

NRG

Energy 

159,966‌

10,828‌

PG&E 

1,497,580‌

25,100‌

Pinnacle

West

Capital 

79,728‌

5,958‌

PPL 

514,673‌

14,169‌

Southern 

765,907‌

54,946‌

Xcel

Energy 

385,503‌

20,721‌

457,132‌

Gas

Utilities

0.0%

Atmos

Energy 

107,673‌

12,799‌

12,799‌

Independent

Power

&

Renewable

Electricity

Producers

0.0%

AES 

467,109‌

8,375‌

8,375‌

Multi-Utilities

0.6%

Ameren 

183,578‌

13,577‌

T.

ROWE

PRICE

Equity

Index

500

Fund

16

Shares/Par

$

Value

(Cost

and

value

in

$000s)

‡

CenterPoint

Energy 

440,670‌

12,555‌

CMS

Energy 

208,461‌

12,579‌

Consolidated

Edison 

241,164‌

21,900‌

Dominion

Energy 

587,992‌

28,923‌

DTE

Energy 

145,140‌

16,276‌

NiSource 

288,514‌

7,980‌

Public

Service

Enterprise

Group 

348,091‌

23,246‌

Sempra 

442,134‌

31,759‌

WEC

Energy

Group 

222,278‌

18,253‌

187,048‌

Water

Utilities

0.1%

American

Water

Works 

137,150‌

16,761‌

16,761‌

Total

Utilities

682,115‌

Total

Common

Stocks

(Cost

$9,498,488)

31,015,493‌

SHORT-TERM

INVESTMENTS

0.4%

Money

Market

Funds

0.4%

T.

Rowe

Price

Government

Reserve

Fund,

5.39% (3)(4)

119,582,727‌

119,583‌

119,583‌

U.S.

Treasury

Obligations

0.0%

U.S.

Treasury

Bills,

5.236%,

5/9/24 (5)

9,010,000‌

8,960‌

8,960‌

Total

Short-Term

Investments

(Cost

$128,544)

128,543‌

SECURITIES

LENDING

COLLATERAL

0.0%

INVESTMENTS

IN

A

POOLED

ACCOUNT

THROUGH

SECURITIES

LENDING

PROGRAM

WITH

STATE

STREET

BANK

AND

TRUST

COMPANY

0.0%

Money

Market

Funds

0.0%

T.

Rowe

Price

Government

Reserve

Fund,

5.39% (3)(4)

10,172,472‌

10,172‌

Total

Investments

in

a

Pooled

Account

through

Securities

Lending

Program

with

State

Street

Bank

And

Trust

Company

10,172‌

Total

Securities

Lending

Collateral

(Cost

$10,172)

10,172‌

Total

Investments

in

Securities

100.0%

(Cost

$9,637,204)

$

31,154,208‌

Other

Assets

Less

Liabilities

(0.0)%

(3,732‌)

Net

Assets

100.0%

$

31,150,476‌

T.

ROWE

PRICE

Equity

Index

500

Fund

17

‡

Shares/Par

and

Notional

Amount

are

denominated

in

U.S.

dollars

unless

otherwise

noted.

(1)

Non-income

producing

(2)

All

or

a

portion

of

this

security

is

on

loan

at

March

31,

2024.

(3)

Affiliated

Companies

(4)

Seven-day

yield

(5)

At

March

31,

2024,

all

or

a

portion

of

this

security

is

pledged

as

collateral

and/or

margin

deposit

to

cover

future

funding

obligations.

REIT

A

domestic

Real

Estate

Investment

Trust

whose

distributions

pass-through

with

original

tax

character

to

the

shareholder

T.

ROWE

PRICE

Equity

Index

500

Fund

18

FUTURES

CONTRACTS

($000s)

Expiration

Date

Notional

Amount

Value

and

Unrealized

Gain

(Loss)

Long,

509

S&P

500

E-Mini

Index

contracts

6/24

135,101

$

2,333‌

Net

payments

(receipts)

of

variation

margin

to

date

(2,327‌)

Variation

margin

receivable

(payable)

on

open

futures

contracts

$

6‌

T.

ROWE

PRICE

Equity

Index

500

Fund

19

The

accompanying

notes

are

an

integral

part

of

this

Portfolio

of

Investments.

AFFILIATED

COMPANIES

($000s)

The

fund

may

invest

in

certain

securities

that

are

considered

affiliated

companies.

As

defined

by

the

1940

Act,

an

affiliated

company

is

one

in

which

the

fund

owns

5%

or

more

of

the

outstanding

voting

securities,

or

a

company

that

is

under

common

ownership

or

control.

The

following

securities

were

considered

affiliated

companies

for

all

or

some

portion

of

the

three

months

ended

March

31,

2024.

Net

realized

gain

(loss),

investment

income,

change

in

net

unrealized

gain/loss,

and

purchase

and

sales

cost

reflect

all

activity

for

the

period

then

ended.

Affiliate

Net

Realized

Gain

(Loss)

Change

in

Net

Unrealized

Gain/Loss

Investment

Income

T.

Rowe

Price

Group 

$

87‌

$

2,141‌

$

194‌

T.

Rowe

Price

Government

Reserve

Fund,

5.39%

—‌

—‌

1,061‌++

Totals

$

87‌#

$

2,141‌

$

1,255‌+

Supplementary

Investment

Schedule

Affiliate

Value

12/31/23

Purchase

Cost

Sales

Cost

Value

03/31/24

T.

Rowe

Price

Group 

$

17,190‌

$

—‌

$

302‌

$

19,029‌

T.

Rowe

Price

Government

Reserve

Fund,

5.39%

218,349‌

 ¤

 ¤

129,755‌

Total

$

148,784‌^

#

Capital

gain

distributions

from

underlying

Price

funds

represented

$0

of

the

net

realized

gain

(loss).

++

Excludes

earnings

on

securities

lending

collateral,

which

are

subject

to

rebates

and

fees.

+

Investment

income

comprised

$1,255

of

dividend

income

and

$0

of

interest

income.

¤

Purchase

and

sale

information

not

shown

for

cash

management

funds.

^

The

cost

basis

of

investments

in

affiliated

companies

was

$136,649.

T.

ROWE

PRICE

Equity

Index

500

Fund

Unaudited

Notes

to

Portfolio

of

Investments

20

T.

Rowe

Price

Equity

Index

500

Fund (the

fund) is

registered

under

the

Investment

Company

Act

of

1940

(the

1940

Act)

as

an

open-end

management

investment

company

and

follows

accounting

and

reporting

guidance

of

the

Financial

Accounting

Standards

Board

Accounting

Standards

Codification

Topic

946.

The

accompanying

Portfolio

of

Investments

was

prepared

in

accordance

with

accounting

principles

generally

accepted

in

the

United

States

of

America

(GAAP).

For

additional

information

on

the

fund’s

significant

accounting

policies

and

investment

related

disclosures,

please

refer

to

the

fund’s most

recent

semiannual

or

annual

shareholder

report

and

its

prospectus. 

VALUATION 

Fair

Value

  The

fund’s

financial

instruments

are

valued

at

the

close

of

the

New

York

Stock

Exchange

(NYSE),

normally

4

p.m.

ET,

each

day

the

NYSE

is

open

for

business,

and

are

reported

at

fair

value,

which

GAAP

defines

as

the

price

that

would

be

received

to

sell

an

asset

or

paid

to

transfer

a

liability

in

an

orderly

transaction

between

market

participants

at

the

measurement

date. The fund’s

Board

of

Directors

(the

Board)

has

designated

T.

Rowe

Price

Associates,

Inc.

as

the

fund’s

valuation

designee

(Valuation

Designee).

Subject

to

oversight

by

the

Board,

the

Valuation

Designee

performs

the

following

functions

in

performing

fair

value

determinations:

assesses

and

manages

valuation

risks;

establishes

and

applies

fair

value

methodologies;

tests

fair

value

methodologies;

and

evaluates

pricing

vendors

and

pricing

agents.

The

duties

and

responsibilities

of

the

Valuation

Designee

are

performed

by

its

Valuation

Committee. The

Valuation

Designee provides

periodic

reporting

to

the

Board

on

valuation

matters.

Various

valuation

techniques

and

inputs

are

used

to

determine

the

fair

value

of

financial

instruments.

GAAP

establishes

the

following

fair

value

hierarchy

that

categorizes

the

inputs

used

to

measure

fair

value:

Level

1

–

quoted

prices

(unadjusted)

in

active

markets

for

identical

financial

instruments

that

the

fund

can

access

at

the

reporting

date

Level

2

–

inputs

other

than

Level

1

quoted

prices

that

are

observable,

either

directly

or

indirectly

(including,

but

not

limited

to,

quoted

prices

for

similar

financial

instruments

in

active

markets,

quoted

prices

for

identical

or

similar

financial

instruments

in

inactive

markets,

interest

rates

and

yield

curves,

implied

volatilities,

and

credit

spreads)

Level

3

–

unobservable

inputs

(including

the Valuation

Designee’s assumptions

in

determining

fair

value)

T.

ROWE

PRICE

Equity

Index

500

Fund

21

Observable

inputs

are

developed

using

market

data,

such

as

publicly

available

information

about

actual

events

or

transactions,

and

reflect

the

assumptions

that

market

participants

would

use

to

price

the

financial

instrument.

Unobservable

inputs

are

those

for

which

market

data

are

not

available

and

are

developed

using

the

best

information

available

about

the

assumptions

that

market

participants

would

use

to

price

the

financial

instrument.

GAAP

requires

valuation

techniques

to

maximize

the

use

of

relevant

observable

inputs

and

minimize

the

use

of

unobservable

inputs.

When

multiple

inputs

are

used

to

derive

fair

value,

the

financial

instrument

is

assigned

to

the

level

within

the

fair

value

hierarchy

based

on

the

lowest-level

input

that

is

significant

to

the

fair

value

of

the

financial

instrument.

Input

levels

are

not

necessarily

an

indication

of

the

risk

or

liquidity

associated

with

financial

instruments

at

that

level

but

rather

the

degree

of

judgment

used

in

determining

those

values.

Valuation

Techniques 

Equity

securities,

including

exchange-traded

funds, listed

or

regularly

traded

on

a

securities

exchange

or

in

the

over-the-counter

(OTC)

market

are

valued

at

the

last

quoted

sale

price

or,

for

certain

markets,

the

official

closing

price

at

the

time

the

valuations

are

made.

OTC

Bulletin

Board

securities

are

valued

at

the

mean

of

the

closing

bid

and

asked

prices.

A

security

that

is

listed

or

traded

on

more

than

one

exchange

is

valued

at

the

quotation

on

the

exchange

determined

to

be

the

primary

market

for

such

security.

Listed

securities

not

traded

on

a

particular

day

are

valued

at

the

mean

of

the

closing

bid

and

asked

prices

for

domestic

securities.

Debt

securities

generally

are

traded

in

the over-the-counter

(OTC)

market

and

are

valued

at

prices

furnished

by

independent

pricing

services

or

by

broker

dealers

who

make

markets

in

such

securities.

When

valuing

securities,

the

independent

pricing

services

consider

factors

such

as,

but

not

limited

to,

the

yield

or

price

of

bonds

of

comparable

quality,

coupon,

maturity,

and

type,

as

well

as

prices

quoted

by

dealers

who

make

markets

in

such

securities.

Investments

in

mutual

funds

are

valued

at

the

mutual

fund’s

closing

NAV

per

share

on

the

day

of

valuation.

Futures

contracts

are

valued

at

closing

settlement

prices.

Investments

for

which

market

quotations are

not

readily

available

or

deemed

unreliable

are

valued

at

fair

value

as

determined

in

good

faith

by

the

Valuation

Designee.

The

Valuation

Designee

has

adopted

methodologies

for

determining

the

fair

value

of

investments

for

which

market

quotations

are

not

readily

available

or

deemed

unreliable,

including

the

use

of

other

pricing

sources.

Factors

used

in

determining

fair

value

vary

by

type

of

investment

and

may

include

market

or

investment

specific

considerations.

The

Valuation

Designee typically

will

afford

greatest

weight

to

actual

prices

in

arm’s

length

transactions,

to

the

extent

they

represent

orderly

transactions

between

market

participants,

transaction

information

can

be

reliably

obtained,

and

prices

are

deemed

representative

of

fair

value.

However,

the

Valuation

Designee may

also

consider

other

T.

ROWE

PRICE

Equity

Index

500

Fund

22

valuation

methods

such

as

market-based

valuation

multiples;

a

discount

or

premium

from

market

value

of

a

similar,

freely

traded

security

of

the

same

issuer;

discounted

cash

flows;

yield

to

maturity;

or

some

combination.

Fair

value

determinations

are

reviewed

on

a

regular

basis.

Because

any

fair

value

determination

involves

a

significant

amount

of

judgment,

there

is

a

degree

of

subjectivity

inherent

in

such

pricing

decisions. Fair

value

prices

determined

by

the

Valuation

Designee could

differ

from

those

of

other

market

participants,

and

it

is

possible

that

the

fair

value

determined

for

a

security

may

be

materially

different

from

the

value

that

could

be

realized

upon

the

sale

of

that

security.

Valuation

Inputs

  The

following

table

summarizes

the

fund’s

financial

instruments,

based

on

the

inputs

used

to

determine

their

fair

values

on

March

31,

2024

(for

further

detail

by

category,

please

refer

to

the

accompanying

Portfolio

of

Investments):

OTHER

MATTERS 

Unpredictable

events

such

as

environmental

or

natural

disasters,

war

and

conflict,

terrorism,

geopolitical

events,

and

public

health

epidemics and

similar

public

health

threats

may

significantly

affect

the

economy

and

the

markets

and

issuers

in

which

the fund

invests.

Certain

events

may

cause

instability

across

global

markets,

including

reduced

liquidity

and

disruptions

in

trading

markets,

while

some

events

may

affect

certain

geographic

regions,

countries,

sectors,

and

industries

more

significantly

than

others,

and

exacerbate

other

pre-existing

political,

social,

and

economic

risks.

($000s)

Level

1

Level

2

Level

3

Total

Value

Assets

Common

Stocks

$

31,015,493‌

$

—‌

$

—‌

$

31,015,493‌

Short-Term

Investments

119,583‌

8,960‌

—‌

128,543‌

Securities

Lending

Collateral

10,172‌

—‌

—‌

10,172‌

Total

Securities

31,145,248‌

8,960‌

—‌

31,154,208‌

Futures

Contracts*

2,333‌

—‌

—‌

2,333‌

Total

$

31,147,581‌

$

8,960‌

$

—‌

$

31,156,541‌

*

The

fair

value

presented

includes

cumulative

gain

(loss)

on

open

futures

contracts;

however,

the

net

value

reflected

on

the

accompanying

Portfolio

of

Investments

is

only

the

unsettled

variation

margin

receivable

(payable)

at

that

date.

T.

ROWE

PRICE

Equity

Index

500

Fund

23

The

global

outbreak

of

COVID-19

and

the

related

governmental

and

public

responses

have

led

and

may

continue

to

lead

to

increased

market

volatility

and

the

potential

for

illiquidity

in

certain

classes

of

securities

and

sectors

of

the

market

either

in

specific

countries

or

worldwide.

In

February

2022,

Russian

forces

entered

Ukraine

and

commenced

an

armed

conflict,

leading

to

economic

sanctions imposed

on

Russia

that

target certain

of

its

citizens

and

issuers

and

sectors

of

the

Russian

economy,

creating

impacts

on

Russian-related

stocks

and

debt

and

greater

volatility

in

global

markets.

In

March

2023,

the

banking

industry

experienced

heightened

volatility,

which

sparked

concerns

of

potential

broader

adverse

market

conditions.

The

extent

of

impact

of

these

events

on

the

US

and

global

markets

is

highly

uncertain.

These

are

recent

examples

of

global

events

which

may

have

a

negative

impact

on

the

values

of

certain

portfolio

holdings

or

the fund’s

overall

performance.

Management

is

actively

monitoring

the

risks

and

financial

impacts

arising

from

these

events.

F50-054Q1

03/24