NPORT-EX 2 70HETRP093024.htm T. ROWE PRICE INDEX TRUST, INC.
T.
ROWE
PRICE
Mid-Cap
Index
Fund
September
30,
2024
(Unaudited)
1
Portfolio
of
Investments
‡
Shares
$
Value
(Cost
and
value
in
$000s)
‡
COMMON
STOCKS
 99.2%
COMMUNICATION
SERVICES
 5.4%
Diversified
Telecommunication
Services
 0.4%
Frontier
Communications
Parent (1)
11,028‌
392‌
GCI
Liberty,
Class
A,
EC (1)(2)
203‌
—‌
Iridium
Communications 
5,271‌
160‌
Liberty
Global,
Class
A (1)
7,467‌
158‌
Liberty
Global,
Class
C (1)
7,202‌
156‌
866‌
Entertainment
 2.7%
Liberty
Media
Corp-Liberty
Formula
One,
Class
A (1)(3)
1,020‌
73‌
Liberty
Media
Corp-Liberty
Formula
One,
Class
C (1)
9,318‌
722‌
Liberty
Media
Corp-Liberty
Live,
Class
A (1)
867‌
43‌
Liberty
Media
Corp-Liberty
Live,
Class
C (1)
2,058‌
106‌
Madison
Square
Garden
Sports (1)
836‌
174‌
Playtika
Holding 
3,158‌
25‌
ROBLOX,
Class
A (1)
23,031‌
1,019‌
Roku (1)
5,679‌
424‌
Spotify
Technology (1)
6,633‌
2,444‌
TKO
Group
Holdings (1)
3,546‌
439‌
5,469‌
Interactive
Media
&
Services
 0.6%
IAC (1)
3,348‌
180‌
Pinterest,
Class
A (1)
27,197‌
880‌
TripAdvisor (1)
4,737‌
69‌
Trump
Media
&
Technology
Group (1)(3)
2,518‌
41‌
ZoomInfo
Technologies (1)
14,047‌
145‌
1,315‌
Media
 1.7%
Liberty
Broadband,
Class
A (1)
737‌
56‌
Liberty
Broadband,
Class
C (1)
4,964‌
384‌
New
York
Times,
Class
A 
7,223‌
402‌
Nexstar
Media
Group 
1,413‌
234‌
Sirius
XM
Holdings 
10,979‌
260‌
Trade
Desk,
Class
A (1)
19,967‌
2,189‌
3,525‌
Total
Communication
Services
11,175‌
CONSUMER
DISCRETIONARY
 12.7%
Automobile
Components
 0.3%
Gentex 
10,407‌
309‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
2
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Lear 
2,540‌
277‌
QuantumScape (1)
16,020‌
92‌
678‌
Automobiles
 0.5%
Harley-Davidson 
5,446‌
210‌
Lucid
Group (1)
39,957‌
141‌
Rivian
Automotive,
Class
A (1)(3)
36,981‌
415‌
Thor
Industries (3)
2,288‌
251‌
1,017‌
Broadline
Retail
 1.1%
Coupang (1)
52,230‌
1,282‌
Dillard's,
Class
A (3)
136‌
52‌
Etsy (1)
5,229‌
291‌
Kohl's (3)
4,894‌
103‌
Macy's 
12,324‌
193‌
Nordstrom 
4,505‌
101‌
Ollie's
Bargain
Outlet
Holdings (1)
2,742‌
267‌
2,289‌
Diversified
Consumer
Services
 1.0%
ADT 
13,070‌
94‌
Bright
Horizons
Family
Solutions (1)
2,593‌
363‌
Duolingo (1)
1,652‌
466‌
Grand
Canyon
Education (1)
1,316‌
187‌
H&R
Block 
6,234‌
396‌
Service
Corp.
International 
6,458‌
510‌
2,016‌
Hotels,
Restaurants
&
Leisure
 3.9%
Aramark 
11,863‌
459‌
Boyd
Gaming 
3,090‌
200‌
Cava
Group (1)
3,390‌
420‌
Choice
Hotels
International (3)
1,266‌
165‌
Churchill
Downs 
3,135‌
424‌
DoorDash,
Class
A (1)
15,671‌
2,237‌
DraftKings,
Class
A (1)
20,480‌
803‌
Dutch
Bros,
Class
A (1)
4,919‌
157‌
Hyatt
Hotels,
Class
A 
1,970‌
300‌
Light
&
Wonder (1)
4,059‌
368‌
Marriott
Vacations
Worldwide 
1,567‌
115‌
Penn
Entertainment (1)(3)
6,782‌
128‌
Planet
Fitness,
Class
A (1)
3,915‌
318‌
Texas
Roadhouse 
3,018‌
533‌
Travel
+
Leisure 
3,052‌
141‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
3
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Vail
Resorts 
1,708‌
298‌
Wendy's 
7,765‌
136‌
Wingstop 
1,328‌
552‌
Wyndham
Hotels
&
Resorts 
3,457‌
270‌
8,024‌
Household
Durables
 1.2%
Leggett
&
Platt 
5,865‌
80‌
Newell
Brands 
18,675‌
143‌
SharkNinja 
2,977‌
324‌
Tempur
Sealy
International 
7,539‌
412‌
Toll
Brothers 
4,624‌
714‌
TopBuild (1)
1,437‌
584‌
Whirlpool 
2,380‌
255‌
2,512‌
Leisure
Products
 0.4%
Brunswick 
3,038‌
254‌
Mattel (1)
15,257‌
291‌
Polaris 
2,305‌
192‌
YETI
Holdings (1)
3,834‌
157‌
894‌
Specialty
Retail
 3.3%
Advance
Auto
Parts 
2,682‌
105‌
AutoNation (1)
1,155‌
207‌
Bath
&
Body
Works 
10,181‌
325‌
Burlington
Stores (1)
2,869‌
756‌
Carvana (1)
4,894‌
852‌
Dick's
Sporting
Goods 
2,535‌
529‌
Five
Below (1)
2,446‌
216‌
Floor
&
Decor
Holdings,
Class
A (1)
4,752‌
590‌
GameStop,
Class
A (1)
16,850‌
386‌
Gap 
9,128‌
201‌
Lithia
Motors 
1,228‌
390‌
Murphy
USA 
836‌
412‌
Penske
Automotive
Group 
830‌
135‌
RH (1)
669‌
224‌
Valvoline (1)
5,811‌
243‌
Wayfair,
Class
A (1)(3)
4,219‌
237‌
Williams-Sonoma 
5,743‌
890‌
6,698‌
Textiles,
Apparel
&
Luxury
Goods
 1.0%
Amer
Sports (1)
2,616‌
42‌
Birkenstock
Holding (1)
1,781‌
88‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
4
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Capri
Holdings (1)
5,159‌
219‌
Carter's 
1,573‌
102‌
Columbia
Sportswear (3)
1,498‌
125‌
Crocs (1)
2,674‌
387‌
PVH 
2,493‌
251‌
Skechers
USA,
Class
A (1)
5,920‌
396‌
Under
Armour,
Class
A (1)
8,296‌
74‌
Under
Armour,
Class
C (1)
8,503‌
71‌
VF 
15,741‌
314‌
2,069‌
Total
Consumer
Discretionary
26,197‌
CONSUMER
STAPLES
 3.1%
Beverages
 0.4%
Boston
Beer,
Class
A (1)
397‌
115‌
Celsius
Holdings (1)
7,924‌
248‌
Coca-Cola
Consolidated 
272‌
358‌
721‌
Consumer
Staples
Distribution
&
Retail
 1.5%
Albertsons,
Class
A 
18,800‌
347‌
BJ's
Wholesale
Club
Holdings (1)
5,974‌
493‌
Casey's
General
Stores 
1,675‌
629‌
Grocery
Outlet
Holding (1)
4,263‌
75‌
Maplebear (1)
7,741‌
315‌
Performance
Food
Group (1)
6,918‌
542‌
U.S.
Foods
Holding (1)
10,365‌
638‌
3,039‌
Food
Products
 0.7%
Darling
Ingredients (1)
7,134‌
265‌
Flowers
Foods 
8,434‌
195‌
Freshpet (1)
2,095‌
287‌
Ingredion 
2,949‌
405‌
Pilgrim's
Pride (1)(3)
1,818‌
84‌
Post
Holdings (1)
2,222‌
257‌
Seaboard 
11‌
34‌
1,527‌
Household
Products
 0.1%
Reynolds
Consumer
Products 
2,391‌
74‌
Spectrum
Brands
Holdings 
1,220‌
116‌
190‌
Personal
Care
Products
 0.4%
BellRing
Brands (1)
5,863‌
356‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
5
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Coty,
Class
A (1)
17,149‌
161‌
elf
Beauty (1)
2,419‌
264‌
781‌
Total
Consumer
Staples
6,258‌
ENERGY
 3.9%
Energy
Equipment
&
Services
 0.5%
NOV 
17,715‌
283‌
TechnipFMC 
19,416‌
509‌
Weatherford
International 
3,246‌
276‌
1,068‌
Oil,
Gas
&
Consumable
Fuels
 3.4%
Antero
Midstream 
15,253‌
229‌
Antero
Resources (1)
13,044‌
374‌
Cheniere
Energy 
10,377‌
1,866‌
Chesapeake
Energy 
5,945‌
489‌
Chord
Energy 
2,780‌
362‌
Civitas
Resources 
4,497‌
228‌
DT
Midstream 
4,369‌
344‌
HF
Sinclair 
7,095‌
316‌
Matador
Resources 
5,288‌
261‌
New
Fortress
Energy 
2,728‌
25‌
Ovintiv 
11,925‌
457‌
Permian
Resources 
29,401‌
400‌
Range
Resources 
10,665‌
328‌
Southwestern
Energy (1)
49,341‌
351‌
Texas
Pacific
Land 
847‌
749‌
Viper
Energy 
4,559‌
206‌
6,985‌
Total
Energy
8,053‌
FINANCIALS
 18.2%
Banks
 4.1%
Bank
OZK 
4,783‌
206‌
BOK
Financial 
1,022‌
107‌
Columbia
Banking
System 
9,382‌
245‌
Comerica 
5,960‌
357‌
Commerce
Bancshares 
5,360‌
318‌
Cullen/Frost
Bankers 
2,646‌
296‌
East
West
Bancorp 
6,247‌
517‌
First
Citizens
BancShares,
Class
A 
542‌
998‌
First
Hawaiian 
5,668‌
131‌
First
Horizon 
24,518‌
381‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
6
Shares
$
Value
(Cost
and
value
in
$000s)
‡
FNB 
16,005‌
226‌
NU
Holdings,
Class
A (1)
143,766‌
1,962‌
Pinnacle
Financial
Partners 
3,409‌
334‌
Popular 
3,208‌
322‌
Prosperity
Bancshares 
4,035‌
291‌
Synovus
Financial 
6,502‌
289‌
TFS
Financial 
2,120‌
27‌
Webster
Financial 
7,663‌
357‌
Western
Alliance
Bancorp 
4,824‌
417‌
Wintrust
Financial 
2,919‌
317‌
Zions
Bancorp 
6,506‌
307‌
8,405‌
Capital
Markets
 5.0%
Affiliated
Managers
Group 
1,425‌
253‌
Ares
Management,
Class
A 
8,252‌
1,286‌
Blue
Owl
Capital (3)
22,551‌
437‌
Carlyle
Group 
9,839‌
424‌
Coinbase
Global,
Class
A (1)
8,921‌
1,589‌
Evercore,
Class
A 
1,611‌
408‌
Houlihan
Lokey 
2,359‌
373‌
Interactive
Brokers
Group,
Class
A 
4,776‌
666‌
Janus
Henderson
Group 
5,816‌
221‌
Jefferies
Financial
Group 
7,904‌
486‌
Lazard 
4,925‌
248‌
LPL
Financial
Holdings 
3,367‌
783‌
Morningstar 
1,198‌
382‌
Robinhood
Markets,
Class
A (1)
30,049‌
704‌
SEI
Investments 
4,498‌
311‌
Stifel
Financial 
4,461‌
419‌
TPG 
3,780‌
218‌
Tradeweb
Markets,
Class
A 
5,252‌
650‌
Virtu
Financial,
Class
A 
3,631‌
111‌
XP,
Class
A 
18,354‌
329‌
10,298‌
Consumer
Finance
 0.7%
Ally
Financial 
12,337‌
439‌
Credit
Acceptance (1)(3)
276‌
122‌
OneMain
Holdings 
5,078‌
239‌
SLM 
9,740‌
223‌
SoFi
Technologies (1)
46,334‌
364‌
1,387‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
7
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Financial
Services
 4.1%
Affirm
Holdings (1)
10,488‌
428‌
Apollo
Global
Management 
23,554‌
2,942‌
Block (1)
25,103‌
1,685‌
Corebridge
Financial 
11,501‌
335‌
Equitable
Holdings 
14,786‌
622‌
Euronet
Worldwide (1)
1,945‌
193‌
MGIC
Investment 
11,566‌
296‌
Rocket,
Class
A (1)
6,232‌
120‌
Shift4
Payments,
Class
A (1)
2,757‌
244‌
Toast,
Class
A (1)
20,079‌
568‌
UWM
Holdings 
4,014‌
34‌
Voya
Financial 
4,550‌
360‌
Western
Union 
15,217‌
182‌
WEX (1)
1,838‌
386‌
8,395‌
Insurance
 3.6%
American
Financial
Group 
3,252‌
438‌
Assured
Guaranty 
2,338‌
186‌
Axis
Capital
Holdings 
3,494‌
278‌
Brighthouse
Financial (1)
2,781‌
125‌
CNA
Financial 
977‌
48‌
Fidelity
National
Financial 
11,740‌
728‌
First
American
Financial 
4,496‌
297‌
Hanover
Insurance
Group 
1,606‌
238‌
Kemper 
2,727‌
167‌
Kinsale
Capital
Group 
992‌
462‌
Lincoln
National 
7,655‌
241‌
Markel
Group (1)
578‌
907‌
Old
Republic
International 
11,208‌
397‌
Primerica 
1,566‌
415‌
Reinsurance
Group
of
America 
2,972‌
647‌
RenaissanceRe
Holdings 
2,316‌
631‌
RLI 
1,863‌
289‌
Ryan
Specialty
Holdings 
4,603‌
306‌
Unum
Group 
8,365‌
497‌
White
Mountains
Insurance
Group 
112‌
190‌
7,487‌
Mortgage
Real
Estate
Investment
Trusts
 0.7%
AGNC
Investment,
REIT (3)
33,213‌
347‌
Annaly
Capital
Management,
REIT 
22,666‌
455‌
Rithm
Capital,
REIT 
23,073‌
262‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
8
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Starwood
Property
Trust,
REIT (3)
14,077‌
287‌
1,351‌
Total
Financials
37,323‌
HEALTH
CARE
 8.7%
Biotechnology
 3.2%
Alnylam
Pharmaceuticals (1)
5,708‌
1,570‌
Apellis
Pharmaceuticals (1)
4,701‌
136‌
BioMarin
Pharmaceutical (1)
8,547‌
601‌
Exact
Sciences (1)(3)
8,258‌
562‌
Exelixis (1)
12,878‌
334‌
GRAIL (1)(3)
1,213‌
17‌
Ionis
Pharmaceuticals (1)
7,040‌
282‌
Natera (1)
5,121‌
650‌
Neurocrine
Biosciences (1)
4,515‌
520‌
Roivant
Sciences (1)
19,142‌
221‌
Sarepta
Therapeutics (1)
4,100‌
512‌
Ultragenyx
Pharmaceutical (1)
4,055‌
225‌
United
Therapeutics (1)
1,975‌
708‌
Viking
Therapeutics (1)
4,731‌
299‌
6,637‌
Health
Care
Equipment
&
Supplies
 0.9%
DENTSPLY
SIRONA 
9,086‌
246‌
Enovis (1)
2,449‌
106‌
Envista
Holdings (1)
7,736‌
153‌
Globus
Medical,
Class
A (1)
5,037‌
360‌
Inspire
Medical
Systems (1)
1,328‌
280‌
Masimo (1)
1,927‌
257‌
Penumbra (1)
1,658‌
322‌
QuidelOrtho (1)
2,392‌
109‌
1,833‌
Health
Care
Providers
&
Services
 1.0%
Acadia
Healthcare (1)
4,095‌
260‌
Amedisys (1)
1,443‌
139‌
Chemed 
667‌
401‌
Encompass
Health 
4,447‌
430‌
Premier,
Class
A 
4,682‌
93‌
R1
RCM (1)
7,065‌
100‌
Tenet
Healthcare (1)
4,302‌
715‌
2,138‌
Health
Care
Technology
 0.8%
Certara (1)
5,259‌
62‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
9
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Doximity,
Class
A (1)
5,521‌
240‌
Veeva
Systems,
Class
A (1)
6,666‌
1,399‌
1,701‌
Life
Sciences
Tools
&
Services
 1.9%
10X
Genomics,
Class
A (1)
4,611‌
104‌
Avantor (1)
30,677‌
794‌
Azenta (1)
2,400‌
116‌
Bio-Rad
Laboratories,
Class
A (1)
868‌
291‌
Bruker 
4,912‌
339‌
Fortrea
Holdings (1)(3)
4,030‌
81‌
Illumina (1)
7,179‌
936‌
Medpace
Holdings (1)
1,152‌
385‌
QIAGEN 
10,121‌
461‌
Repligen (1)
2,501‌
372‌
Sotera
Health (1)
6,783‌
113‌
3,992‌
Pharmaceuticals
 0.9%
Elanco
Animal
Health (1)
22,148‌
325‌
Intra-Cellular
Therapies (1)
4,631‌
339‌
Jazz
Pharmaceuticals (1)
2,770‌
309‌
Organon 
11,576‌
222‌
Perrigo 
6,099‌
160‌
Royalty
Pharma,
Class
A 
17,723‌
501‌
1,856‌
Total
Health
Care
18,157‌
INDUSTRIALS
&
BUSINESS
SERVICES
 18.2%
Aerospace
&
Defense
 1.5%
BWX
Technologies 
4,103‌
446‌
Curtiss-Wright 
1,727‌
568‌
HEICO 
1,995‌
522‌
HEICO,
Class
A 
3,674‌
749‌
Hexcel 
3,694‌
228‌
Loar
Holdings (1)
450‌
33‌
Spirit
AeroSystems
Holdings,
Class
A (1)
5,218‌
170‌
Woodward 
2,702‌
463‌
3,179‌
Air
Freight
&
Logistics
 0.1%
GXO
Logistics (1)
5,282‌
275‌
275‌
Building
Products
 2.5%
AAON 
3,074‌
331‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
10
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Advanced
Drainage
Systems 
3,175‌
499‌
Armstrong
World
Industries 
1,955‌
257‌
AZEK (1)
6,459‌
302‌
Carlisle 
2,077‌
934‌
Fortune
Brands
Innovations 
5,553‌
497‌
Hayward
Holdings (1)
6,422‌
98‌
Lennox
International 
1,449‌
876‌
Owens
Corning 
3,903‌
689‌
Simpson
Manufacturing 
1,922‌
368‌
Trex (1)
4,875‌
325‌
5,176‌
Commercial
Services
&
Supplies
 1.2%
Clean
Harbors (1)
2,305‌
557‌
MSA
Safety 
1,664‌
295‌
RB
Global 
8,284‌
667‌
Stericycle (1)
4,147‌
253‌
Tetra
Tech 
12,061‌
569‌
Vestis 
5,806‌
86‌
2,427‌
Construction
&
Engineering
 1.8%
AECOM 
6,143‌
634‌
API
Group (1)
10,231‌
338‌
Comfort
Systems
USA 
1,581‌
617‌
EMCOR
Group 
2,094‌
902‌
MasTec (1)
2,842‌
350‌
MDU
Resources 
9,138‌
250‌
Valmont
Industries 
895‌
260‌
WillScot
Holdings (1)
8,308‌
312‌
3,663‌
Electrical
Equipment
 1.6%
Acuity
Brands 
1,386‌
382‌
nVent
Electric 
7,479‌
525‌
Regal
Rexnord 
3,005‌
498‌
Sensata
Technologies
Holding 
6,723‌
241‌
Vertiv
Holdings,
Class
A 
16,178‌
1,610‌
3,256‌
Ground
Transportation
 1.3%
Avis
Budget
Group 
776‌
68‌
Knight-Swift
Transportation
Holdings 
7,038‌
380‌
Landstar
System 
1,601‌
302‌
Lyft,
Class
A (1)
16,402‌
209‌
Ryder
System 
1,918‌
280‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
11
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Saia (1)
1,198‌
524‌
Schneider
National,
Class
B 
2,111‌
60‌
U-Haul
Holding (1)(3)
339‌
26‌
U-Haul
Holding,
Non-Voting 
4,511‌
325‌
XPO (1)
5,173‌
556‌
2,730‌
Machinery
 2.9%
AGCO 
2,801‌
274‌
Allison
Transmission
Holdings 
3,929‌
378‌
CNH
Industrial 
39,548‌
439‌
Crane 
2,201‌
348‌
Donaldson 
5,394‌
398‌
Esab 
2,545‌
271‌
Flowserve 
5,908‌
305‌
Gates
Industrial (1)
9,225‌
162‌
Graco 
7,569‌
662‌
ITT 
3,729‌
558‌
Lincoln
Electric
Holdings 
2,481‌
476‌
Middleby (1)
2,395‌
333‌
Oshkosh 
2,934‌
294‌
RBC
Bearings (1)
1,276‌
382‌
Timken 
2,907‌
245‌
Toro 
4,691‌
407‌
5,932‌
Marine
Transportation
 0.2%
Kirby (1)
2,610‌
320‌
320‌
Passenger
Airlines
 0.3%
Alaska
Air
Group (1)
5,696‌
257‌
American
Airlines
Group (1)
29,418‌
331‌
588‌
Professional
Services
 2.9%
Booz
Allen
Hamilton
Holding 
5,791‌
943‌
CACI
International,
Class
A (1)
992‌
501‌
Clarivate (1)
18,379‌
130‌
Concentrix (3)
2,147‌
110‌
Dun
&
Bradstreet
Holdings (3)
13,614‌
157‌
FTI
Consulting (1)
1,583‌
360‌
Genpact 
7,903‌
310‌
KBR 
5,978‌
389‌
ManpowerGroup 
2,147‌
158‌
Parsons (1)
2,078‌
215‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
12
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Paycor
HCM (1)
3,206‌
46‌
Paylocity
Holding (1)
1,972‌
325‌
Robert
Half 
4,549‌
307‌
Science
Applications
International 
2,298‌
320‌
SS&C
Technologies
Holdings 
9,722‌
721‌
TransUnion 
8,744‌
916‌
5,908‌
Trading
Companies
&
Distributors
 1.9%
Air
Lease 
4,741‌
215‌
Core
&
Main,
Class
A (1)
8,619‌
382‌
Ferguson
Enterprises 
9,142‌
1,815‌
MSC
Industrial
Direct,
Class
A 
2,065‌
178‌
SiteOne
Landscape
Supply (1)
2,006‌
303‌
Watsco 
1,564‌
769‌
WESCO
International 
1,957‌
329‌
3,991‌
Total
Industrials
&
Business
Services
37,445‌
INFORMATION
TECHNOLOGY
 16.9%
Communications
Equipment
 0.3%
Ciena (1)
6,466‌
398‌
Lumentum
Holdings (1)
3,003‌
190‌
Ubiquiti 
188‌
42‌
630‌
Electronic
Equipment,
Instruments
&
Components
 1.2%
Arrow
Electronics (1)
2,397‌
318‌
Avnet 
4,078‌
222‌
Cognex 
7,733‌
313‌
Coherent (1)
5,985‌
532‌
Crane
NXT 
2,207‌
124‌
IPG
Photonics (1)
1,241‌
92‌
Littelfuse 
1,097‌
291‌
TD
SYNNEX 
3,386‌
407‌
Vontier 
7,008‌
236‌
2,535‌
IT
Services
 2.9%
Amdocs 
5,189‌
454‌
Cloudflare,
Class
A (1)
13,519‌
1,094‌
DXC
Technology (1)
8,140‌
169‌
Globant (1)
1,892‌
375‌
Kyndryl
Holdings (1)
10,230‌
235‌
MongoDB (1)
3,185‌
861‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
13
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Okta (1)
7,224‌
537‌
Snowflake,
Class
A (1)
14,288‌
1,641‌
Twilio,
Class
A (1)
7,731‌
504‌
5,870‌
Semiconductors
&
Semiconductor
Equipment
 3.0%
Allegro
MicroSystems (1)
5,531‌
129‌
Amkor
Technology 
5,075‌
155‌
Astera
Labs (1)(3)
975‌
51‌
Cirrus
Logic (1)
2,419‌
301‌
Entegris 
6,812‌
767‌
GLOBALFOUNDRIES (1)(3)
4,426‌
178‌
Lattice
Semiconductor (1)
6,127‌
325‌
MACOM
Technology
Solutions
Holdings (1)
2,509‌
279‌
Marvell
Technology 
38,684‌
2,790‌
MKS
Instruments 
3,033‌
330‌
Onto
Innovation (1)
2,218‌
460‌
Universal
Display 
2,112‌
443‌
Wolfspeed (1)(3)
5,422‌
53‌
6,261‌
Software
 9.2%
Appfolio,
Class
A (1)
1,020‌
240‌
AppLovin,
Class
A (1)
11,853‌
1,547‌
Aspen
Technology (1)
1,210‌
289‌
Atlassian,
Class
A (1)
7,076‌
1,124‌
Bentley
Systems,
Class
B 
6,305‌
320‌
BILL
Holdings (1)
4,609‌
243‌
CCC
Intelligent
Solutions
Holdings (1)
20,346‌
225‌
Confluent,
Class
A (1)
11,141‌
227‌
Datadog,
Class
A (1)
13,509‌
1,554‌
DocuSign (1)
9,199‌
571‌
Dolby
Laboratories,
Class
A 
2,631‌
201‌
DoubleVerify
Holdings (1)
6,526‌
110‌
Dropbox,
Class
A (1)
10,832‌
276‌
Dynatrace (1)
13,341‌
713‌
Elastic (1)
3,661‌
281‌
Five9 (1)
3,302‌
95‌
Gitlab,
Class
A (1)
5,331‌
275‌
Guidewire
Software (1)
3,703‌
677‌
HashiCorp,
Class
A (1)
6,348‌
215‌
HubSpot (1)
2,203‌
1,171‌
Informatica,
Class
A (1)
2,916‌
74‌
Manhattan
Associates (1)
2,764‌
778‌
MicroStrategy,
Class
A (1)(3)
7,061‌
1,191‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
14
Shares
$
Value
(Cost
and
value
in
$000s)
‡
nCino (1)
3,716‌
117‌
Nutanix,
Class
A (1)
10,988‌
651‌
Pegasystems 
1,987‌
145‌
Procore
Technologies (1)
4,736‌
292‌
RingCentral,
Class
A (1)
3,649‌
115‌
SentinelOne,
Class
A (1)
12,364‌
296‌
Smartsheet,
Class
A (1)
6,015‌
333‌
Teradata (1)
4,368‌
133‌
UiPath,
Class
A (1)
19,978‌
256‌
Unity
Software (1)(3)
13,382‌
303‌
Workday,
Class
A (1)
9,552‌
2,335‌
Zoom
Video
Communications,
Class
A (1)
11,926‌
832‌
Zscaler (1)
4,141‌
708‌
18,913‌
Technology
Hardware,
Storage
&
Peripherals
 0.3%
Pure
Storage,
Class
A (1)
13,888‌
698‌
698‌
Total
Information
Technology
34,907‌
MATERIALS
 5.8%
Chemicals
 1.3%
Ashland 
2,248‌
196‌
Axalta
Coating
Systems (1)
9,904‌
358‌
Chemours 
6,713‌
136‌
Element
Solutions 
10,070‌
274‌
Huntsman 
7,355‌
178‌
NewMarket 
302‌
167‌
Olin 
5,322‌
255‌
RPM
International 
5,750‌
696‌
Scotts
Miracle-Gro 
1,896‌
164‌
Westlake 
1,522‌
229‌
2,653‌
Construction
Materials
 1.6%
CRH 
31,015‌
2,876‌
Eagle
Materials 
1,495‌
430‌
3,306‌
Containers
&
Packaging
 1.2%
AptarGroup 
2,990‌
479‌
Berry
Global
Group 
5,153‌
350‌
Crown
Holdings 
5,295‌
508‌
Graphic
Packaging
Holding 
13,460‌
398‌
Sealed
Air 
6,545‌
237‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
15
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Silgan
Holdings 
3,729‌
196‌
Sonoco
Products 
4,406‌
241‌
2,409‌
Metals
&
Mining
 1.5%
Alcoa 
11,262‌
434‌
ATI (1)
5,548‌
371‌
Cleveland-Cliffs (1)
20,851‌
266‌
MP
Materials (1)(3)
5,809‌
103‌
Reliance 
2,583‌
747‌
Royal
Gold 
2,977‌
418‌
Southern
Copper 
3,926‌
454‌
United
States
Steel 
10,108‌
357‌
3,150‌
Paper
&
Forest
Products
 0.2%
Louisiana-Pacific 
2,898‌
311‌
311‌
Total
Materials
11,829‌
REAL
ESTATE
 5.3%
Diversified
Real
Estate
Investment
Trusts
 0.3%
WP
Carey,
REIT 
9,806‌
611‌
611‌
Health
Care
Real
Estate
Investment
Trusts
 0.4%
Healthcare
Realty
Trust,
REIT 
17,105‌
311‌
Medical
Properties
Trust,
REIT 
26,719‌
156‌
Omega
Healthcare
Investors,
REIT 
11,175‌
455‌
922‌
Hotel
&
Resort
Real
Estate
Investment
Trusts
 0.1%
Park
Hotels
&
Resorts,
REIT 
9,469‌
134‌
134‌
Industrial
Real
Estate
Investment
Trusts
 1.0%
Americold
Realty
Trust,
REIT 
12,760‌
361‌
EastGroup
Properties,
REIT 
2,191‌
409‌
First
Industrial
Realty
Trust,
REIT 
5,941‌
333‌
Lineage,
REIT 
2,770‌
217‌
Rexford
Industrial
Realty,
REIT 
9,763‌
491‌
STAG
Industrial,
REIT 
8,140‌
318‌
2,129‌
Office
Real
Estate
Investment
Trusts
 0.4%
Cousins
Properties,
REIT 
6,817‌
201‌
Highwoods
Properties,
REIT 
4,652‌
156‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
16
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Kilroy
Realty,
REIT 
5,308‌
205‌
Vornado
Realty
Trust,
REIT 
7,884‌
311‌
873‌
Real
Estate
Management
&
Development
 0.6%
Howard
Hughes
Holdings (1)
1,395‌
108‌
Jones
Lang
LaSalle (1)
2,138‌
577‌
Seaport
Entertainment
Group (1)(3)
148‌
4‌
Seaport
Entertainment
Group,
Rights,
10/10/24 (1)
148‌
—‌
Zillow
Group,
Class
A (1)
2,117‌
131‌
Zillow
Group,
Class
C (1)
7,182‌
459‌
1,279‌
Residential
Real
Estate
Investment
Trusts
 0.9%
American
Homes
4
Rent,
Class
A,
REIT 
15,281‌
587‌
Equity
LifeStyle
Properties,
REIT 
8,340‌
595‌
Sun
Communities,
REIT 
5,578‌
754‌
1,936‌
Retail
Real
Estate
Investment
Trusts
 0.5%
Agree
Realty,
REIT 
4,456‌
335‌
Brixmor
Property
Group,
REIT 
13,456‌
375‌
NNN
REIT,
REIT 
8,142‌
395‌
1,105‌
Specialized
Real
Estate
Investment
Trusts
 1.1%
CubeSmart,
REIT 
10,129‌
545‌
EPR
Properties,
REIT 
3,363‌
165‌
Gaming
&
Leisure
Properties,
REIT 
11,789‌
606‌
Lamar
Advertising,
Class
A,
REIT 
3,942‌
527‌
National
Storage
Affiliates
Trust,
REIT 
3,090‌
149‌
Rayonier,
REIT 
6,647‌
214‌
2,206‌
Total
Real
Estate
11,195‌
UTILITIES
 1.0%
Electric
Utilities
 0.4%
Avangrid 
3,148‌
113‌
IDACORP 
2,276‌
235‌
OGE
Energy 
8,977‌
368‌
716‌
Gas
Utilities
 0.2%
National
Fuel
Gas 
4,098‌
249‌
UGI 
9,441‌
236‌
485‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
17
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Independent
Power
&
Renewable
Electricity
Producers
 0.2%
Brookfield
Renewable,
Class
A (3)
6,082‌
199‌
Clearway
Energy,
Class
A 
1,556‌
44‌
Clearway
Energy,
Class
C 
3,691‌
113‌
356‌
Water
Utilities
 0.2%
Essential
Utilities 
11,318‌
437‌
437‌
Total
Utilities
1,994‌
Total
Common
Stocks
(Cost
$177,709)
204,533‌
SHORT-TERM
INVESTMENTS
 0.0%
Money
Market
Funds
 0.0%
T.
Rowe
Price
Government
Reserve
Fund,
4.97% (4)(5)
1,813‌
2‌
Total
Short-Term
Investments
(Cost
$2)
2‌
SECURITIES
LENDING
COLLATERAL
 2.7%
INVESTMENTS
IN
A
POOLED
ACCOUNT
THROUGH
SECURITIES
LENDING
PROGRAM
WITH
STATE
STREET
BANK
AND
TRUST
COMPANY 2.7%
Money
Market
Funds 2.7%
T.
Rowe
Price
Government
Reserve
Fund,
4.97% (4)(5)
5,648,778‌
5,649‌
Total
Investments
in
a
Pooled
Account
through
Securities
Lending
Program
with
State
Street
Bank
and
Trust
Company
5,649‌
Total
Securities
Lending
Collateral
(Cost
$5,649)
5,649‌
Total
Investments
in
Securities
 101.9%
(Cost
$183,360)
$
210,184‌
Other
Assets
Less
Liabilities
(1.9)%
(4,017‌)
Net
Assets
100.0%
$
206,167‌
‡
Shares
are
denominated
in
U.S.
dollars
unless
otherwise
noted.
(1)
Non-income
producing
(2)
Level
3
in
fair
value
hierarchy.
(3)
All
or
a
portion
of
this
security
is
on
loan
at
September
30,
2024.
(4)
Seven-day
yield
T.
ROWE
PRICE
Mid-Cap
Index
Fund
18
.
.
.
.
.
.
.
.
.
.
(5)
Affiliated
Companies
EC
Escrow
CUSIP;
represents
a
beneficial
interest
in
a
residual
pool
of
assets;
the
amount
and
timing
of
future
distributions,
if
any,
is
uncertain;
when
presented,
interest
rate
and
maturity
date
are
those
of
the
original
security.
REIT
A
domestic
Real
Estate
Investment
Trust
whose
distributions
pass-through
with
original
tax
character
to
the
shareholder
T.
ROWE
PRICE
Mid-Cap
Index
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
nine
months
ended
September
30,
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
Government
Reserve
Fund,
4.97%
$
—‌
$
—‌
$
13‌++
Totals
$
—‌#
$
—‌
$
13‌+
Supplementary
Investment
Schedule
Affiliate
Value
12/31/23
Purchase
Cost
Sales
Cost
Value
09/30/24
T.
Rowe
Price
Government
Reserve
Fund,
4.97%
$
4,984‌
 ¤
 ¤
$
5,651‌
Total
$
5,651‌^
#
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
$13
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
$5,651.
T.
ROWE
PRICE
Mid-Cap
Index
Fund
Unaudited
Notes
to
Portfolio
of
Investments
20
T.
Rowe
Price
Mid-Cap
Index
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)
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Level
3
–
unobservable
inputs
(including
the Valuation
Designee’s assumptions
in
determining
fair
value)
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.
Investments
in
mutual
funds
are
valued
at
the
mutual
fund’s
closing
NAV
per
share
on
the
day
of
valuation.
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
valuation
methods
such
as
market-based
valuation
multiples;
T.
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PRICE
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Index
Fund
22
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
September
30,
2024
(for
further
detail
by
category,
please
refer
to
the
accompanying
Portfolio
of
Investments):
OTHER
MATTERS 
Unpredictable environmental,
political,
social
and
economic
events,
including
but
not
limited
to,
environmental
or
natural
disasters,
war
and
conflict
(including
Russia’s
military
invasion
of
Ukraine
and
the
conflict
in
Israel,
Gaza
and
surrounding
areas),
terrorism,
geopolitical
developments
(including
trading
and
tariff
arrangements,
sanctions
and
cybersecurity
attacks),
and
public
health
epidemics
(including
the
global
outbreak
of
COVID-19)
and
similar
public
health
threats,
may
significantly
affect
the
economy
and
the
markets
and
issuers
in
which
a
fund
invests.
The
extent
and
duration
of
such
events
and
resulting
market
disruptions
cannot
be
predicted.
These
and
other
similar
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.
The
fund’s
($000s)
Level
1
Level
2
Level
3
Total
Value
Assets
Common
Stocks
$
204,533‌
$
—‌
$
—‌
$
204,533‌
Short-Term
Investments
2‌
—‌
—‌
2‌
Securities
Lending
Collateral
5,649‌
—‌
—‌
5,649‌
Total
$
210,184‌
$
—‌
$
—‌
$
210,184‌
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PRICE
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23
performance
could
be
negatively
impacted
if
the
value
of
a
portfolio
holding
were
harmed
by
these
or
such
events.
Management
actively
monitors
the
risks
and
financial
impacts
arising
from
such
events.