NPORT-EX 2 70HETROWE09302022.htm
T.
ROWE
PRICE
Mid-Cap
Index
Fund
September
30,
2022
(Unaudited)
1
Portfolio
of
Investments
‡
Shares
$
Value
(Cost
and
value
in
$000s)
‡
COMMON
STOCKS
99.9%
COMMUNICATION
SERVICES
4.8%
Diversified
Telecommunication
Services
0.2%
Frontier
Communications
Parent (1)
6,024‌
141‌
141‌
Entertainment
1.7%
AMC
Entertainment
Holdings,
Class
A (1)(2)
12,719‌
89‌
Liberty
Media-Liberty
Formula
One,
Class
A (1)
560‌
29‌
Liberty
Media-Liberty
Formula
One,
Class
C (1)
4,969‌
291‌
Madison
Square
Garden
Sports (1)
475‌
65‌
Playtika
Holding (1)(2)
2,772‌
26‌
ROBLOX,
Class
A (1)
10,880‌
390‌
Roku (1)(2)
2,982‌
168‌
Spotify
Technology (1)
3,465‌
299‌
World
Wrestling
Entertainment,
Class
A 
1,076‌
75‌
1,432‌
Interactive
Media
&
Services
0.9%
IAC (1)
1,952‌
108‌
Pinterest,
Class
A (1)
14,407‌
336‌
TripAdvisor (1)
2,569‌
57‌
ZoomInfo
Technologies (1)
6,806‌
283‌
784‌
Media
2.0%
Altice
USA,
Class
A (1)
5,536‌
32‌
Cable
One 
146‌
125‌
Liberty
Broadband,
Class
A (1)
457‌
34‌
Liberty
Broadband,
Class
C (1)
3,064‌
226‌
Liberty
Media-Liberty
SiriusXM,
Class
A (1)
1,903‌
72‌
Liberty
Media-Liberty
SiriusXM,
Class
C (1)
3,862‌
146‌
New
York
Times,
Class
A 
4,045‌
116‌
Nexstar
Media
Group,
Class
A 
929‌
155‌
Sirius
XM
Holdings 
17,632‌
101‌
Trade
Desk,
Class
A (1)
10,822‌
647‌
1,654‌
Total
Communication
Services
4,011‌
CONSUMER
DISCRETIONARY
11.0%
Auto
Components
0.4%
Gentex 
5,778‌
138‌
Lear 
1,481‌
177‌
QuantumScape (1)(2)
6,482‌
55‌
370‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
1
T.
ROWE
PRICE
Mid-Cap
Index
Fund
2
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Automobiles
1.0%
Harley-Davidson 
3,369‌
118‌
Lucid
Group (1)(2)
13,221‌
185‌
Rivian
Automotive,
Class
A (1)
12,837‌
422‌
Thor
Industries 
1,302‌
91‌
816‌
Diversified
Consumer
Services
0.8%
ADT 
5,437‌
41‌
Bright
Horizons
Family
Solutions (1)
1,422‌
82‌
Grand
Canyon
Education (1)
800‌
66‌
H&R
Block 
3,970‌
169‌
Mister
Car
Wash (1)(2)
2,197‌
19‌
Service
Corp
International 
3,831‌
221‌
Terminix
Global
Holdings (1)
3,045‌
116‌
714‌
Hotels,
Restaurants
&
Leisure
3.1%
Airbnb,
Class
A (1)
9,617‌
1,010‌
Aramark 
5,768‌
180‌
Boyd
Gaming 
1,930‌
92‌
Choice
Hotels
International 
829‌
91‌
Churchill
Downs 
892‌
164‌
DraftKings,
Class
A (1)
7,968‌
121‌
Hyatt
Hotels,
Class
A (1)
1,223‌
99‌
Marriott
Vacations
Worldwide 
960‌
117‌
Penn
Entertainment (1)
3,962‌
109‌
Planet
Fitness,
Class
A (1)
2,076‌
120‌
Six
Flags
Entertainment (1)
1,866‌
33‌
Travel
+
Leisure 
2,027‌
69‌
Vail
Resorts 
998‌
215‌
Wendy's 
4,197‌
78‌
Wyndham
Hotels
&
Resorts 
2,217‌
136‌
2,634‌
Household
Durables
0.5%
Leggett
&
Platt 
3,337‌
111‌
Tempur
Sealy
International 
4,221‌
102‌
Toll
Brothers 
2,659‌
112‌
TopBuild (1)
797‌
131‌
456‌
Internet
&
Direct
Marketing
Retail
0.4%
DoorDash,
Class
A (1)
6,187‌
306‌
Wayfair,
Class
A (1)(2)
1,980‌
64‌
370‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
3
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Leisure
Products
0.6%
Brunswick 
1,827‌
119‌
Mattel (1)
8,757‌
166‌
Peloton
Interactive,
Class
A (1)(2)
7,745‌
54‌
Polaris 
1,411‌
135‌
YETI
Holdings (1)
2,196‌
63‌
537‌
Multiline
Retail
0.4%
Kohl's 
3,151‌
79‌
Macy's 
6,763‌
106‌
Nordstrom (2)
2,881‌
48‌
Ollie's
Bargain
Outlet
Holdings (1)
1,536‌
80‌
313‌
Specialty
Retail
2.0%
AutoNation (1)
940‌
96‌
Burlington
Stores (1)
1,638‌
183‌
Carvana (1)(2)
2,570‌
52‌
Dick's
Sporting
Goods (2)
1,340‌
140‌
Five
Below (1)
1,358‌
187‌
Floor
&
Decor
Holdings,
Class
A (1)
2,538‌
178‌
GameStop,
Class
A (1)(2)
6,685‌
168‌
Gap 
5,128‌
42‌
Leslie's (1)(2)
4,048‌
60‌
Lithia
Motors 
676‌
145‌
Penske
Automotive
Group 
682‌
67‌
Petco
Health
&
Wellness (1)
2,172‌
24‌
RH (1)
491‌
121‌
Victoria's
Secret (1)
2,108‌
62‌
Williams-Sonoma 
1,682‌
198‌
1,723‌
Textiles,
Apparel
&
Luxury
Goods
1.8%
Capri
Holdings (1)
3,365‌
129‌
Carter's 
945‌
62‌
Columbia
Sportswear 
892‌
60‌
Deckers
Outdoor (1)
655‌
205‌
Hanesbrands 
8,875‌
62‌
Lululemon
Athletica (1)
2,753‌
770‌
PVH 
1,679‌
75‌
Skechers
USA,
Class
A (1)
3,291‌
104‌
Under
Armour,
Class
A (1)
4,934‌
33‌
Under
Armour,
Class
C (1)
5,008‌
30‌
1,530‌
Total
Consumer
Discretionary
9,463‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
4
Shares
$
Value
(Cost
and
value
in
$000s)
‡
CONSUMER
STAPLES
2.6%
Beverages
0.1%
Boston
Beer,
Class
A (1)
233‌
75‌
75‌
Food
&
Staples
Retailing
1.1%
Albertsons,
Class
A 
4,225‌
105‌
BJ's
Wholesale
Club
Holdings (1)
3,323‌
242‌
Casey's
General
Stores 
922‌
187‌
Grocery
Outlet
Holding (1)
2,236‌
74‌
Performance
Food
Group (1)
3,788‌
163‌
U.S.
Foods
Holding (1)
5,043‌
133‌
904‌
Food
Products
1.2%
Bunge 
3,471‌
287‌
Darling
Ingredients (1)
3,965‌
262‌
Flowers
Foods 
4,612‌
114‌
Freshpet (1)(2)
1,162‌
58‌
Ingredion 
1,638‌
132‌
Pilgrim's
Pride (1)
1,259‌
29‌
Post
Holdings (1)
1,350‌
111‌
Seaboard 
6‌
20‌
1,013‌
Household
Products
0.1%
Reynolds
Consumer
Products 
1,420‌
37‌
Spectrum
Brands
Holdings 
1,036‌
40‌
77‌
Personal
Products
0.1%
Coty,
Class
A (1)
8,869‌
56‌
Olaplex
Holdings (1)
3,284‌
31‌
87‌
Total
Consumer
Staples
2,156‌
ENERGY
4.3%
Energy
Equipment
&
Services
0.2%
NOV 
9,760‌
158‌
158‌
Oil,
Gas
&
Consumable
Fuels
4.1%
Antero
Midstream 
8,283‌
76‌
Antero
Resources (1)
7,182‌
219‌
Cheniere
Energy 
6,127‌
1,017‌
Chesapeake
Energy (2)
3,000‌
283‌
Continental
Resources 
920‌
61‌
DT
Midstream 
2,425‌
126‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
5
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Enviva 
789‌
47‌
HF
Sinclair 
3,583‌
193‌
New
Fortress
Energy 
1,214‌
53‌
Ovintiv 
6,328‌
291‌
PDC
Energy 
2,363‌
137‌
Range
Resources 
6,311‌
159‌
Southwestern
Energy (1)
27,714‌
170‌
Targa
Resources 
5,589‌
337‌
Texas
Pacific
Land 
141‌
251‌
3,420‌
Total
Energy
3,578‌
FINANCIALS
15.1%
Banks
3.3%
Bank
of
Hawaii 
975‌
74‌
Bank
OZK 
2,759‌
109‌
BOK
Financial 
748‌
66‌
Commerce
Bancshares 
2,725‌
180‌
Cullen/Frost
Bankers 
1,450‌
192‌
East
West
Bancorp 
3,509‌
236‌
First
Citizens
BancShares,
Class
A 
303‌
242‌
First
Hawaiian 
3,230‌
80‌
First
Horizon 
13,101‌
300‌
FNB 
8,589‌
100‌
PacWest
Bancorp 
2,866‌
65‌
Pinnacle
Financial
Partners 
1,868‌
151‌
Popular 
1,836‌
132‌
Prosperity
Bancshares 
2,158‌
144‌
Synovus
Financial 
3,597‌
135‌
Umpqua
Holdings 
5,439‌
93‌
Webster
Financial 
4,300‌
194‌
Western
Alliance
Bancorp 
2,631‌
173‌
Wintrust
Financial 
1,473‌
120‌
2,786‌
Capital
Markets
5.4%
Affiliated
Managers
Group 
952‌
106‌
Ares
Management,
Class
A 
3,763‌
233‌
Blackstone 
17,233‌
1,442‌
Blue
Owl
Capital (2)
10,453‌
96‌
Carlyle
Group 
5,173‌
134‌
Coinbase
Global,
Class
A (1)
3,916‌
253‌
Evercore,
Class
A 
902‌
74‌
Interactive
Brokers
Group,
Class
A 
2,284‌
146‌
Janus
Henderson
Group 
3,407‌
69‌
Jefferies
Financial
Group 
5,009‌
148‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
6
Shares
$
Value
(Cost
and
value
in
$000s)
‡
KKR 
14,110‌
607‌
Lazard,
Class
A 
2,211‌
70‌
LPL
Financial
Holdings 
1,962‌
429‌
Morningstar 
621‌
132‌
Robinhood
Markets,
Class
A (1)(2)
13,822‌
140‌
SEI
Investments 
2,541‌
125‌
Stifel
Financial 
2,581‌
134‌
Tradeweb
Markets,
Class
A 
2,685‌
151‌
Virtu
Financial,
Class
A 
2,500‌
52‌
4,541‌
Consumer
Finance
0.7%
Ally
Financial 
7,654‌
213‌
Credit
Acceptance (1)(2)
166‌
73‌
OneMain
Holdings 
2,928‌
86‌
SLM 
6,304‌
88‌
SoFi
Technologies (1)
19,563‌
96‌
Upstart
Holdings (1)(2)
1,744‌
36‌
592‌
Diversified
Financial
Services
1.1%
Apollo
Global
Management 
11,334‌
527‌
Equitable
Holdings 
9,278‌
244‌
Voya
Financial 
2,393‌
145‌
916‌
Insurance
3.7%
Alleghany (1)
325‌
273‌
American
Financial
Group 
1,672‌
205‌
Arch
Capital
Group (1)
8,754‌
399‌
Assured
Guaranty 
1,482‌
72‌
Axis
Capital
Holdings 
1,958‌
96‌
Brighthouse
Financial (1)
1,763‌
76‌
CNA
Financial 
731‌
27‌
Erie
Indemnity,
Class
A 
627‌
139‌
Fidelity
National
Financial 
6,543‌
237‌
First
American
Financial 
2,488‌
115‌
Hanover
Insurance
Group 
887‌
114‌
Kemper 
1,615‌
67‌
Markel (1)
328‌
356‌
Old
Republic
International 
7,054‌
148‌
Primerica 
919‌
113‌
Reinsurance
Group
of
America 
1,642‌
207‌
RenaissanceRe
Holdings 
1,061‌
149‌
Ryan
Specialty
Holdings (1)
2,075‌
84‌
Unum
Group 
4,979‌
193‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
7
Shares
$
Value
(Cost
and
value
in
$000s)
‡
White
Mountains
Insurance
Group 
70‌
91‌
3,161‌
Mortgage
Real
Estate
Investment
Trusts
0.6%
AGNC
Investment,
REIT 
13,094‌
110‌
Annaly
Capital
Management,
REIT 
10,711‌
184‌
Rithm
Capital,
REIT 
10,503‌
77‌
Starwood
Property
Trust,
REIT 
7,298‌
133‌
504‌
Thrifts
&
Mortgage
Finance
0.3%
MGIC
Investment 
7,585‌
97‌
New
York
Community
Bancorp (2)
11,337‌
97‌
Rocket,
Class
A 
2,876‌
18‌
TFS
Financial 
1,402‌
18‌
UWM
Holdings (2)
3,062‌
9‌
239‌
Total
Financials
12,739‌
HEALTH
CARE
10.6%
Biotechnology
3.8%
Alnylam
Pharmaceuticals (1)
2,973‌
595‌
BioMarin
Pharmaceutical (1)
4,562‌
387‌
Exact
Sciences (1)
4,363‌
142‌
Exelixis (1)
7,773‌
122‌
Horizon
Therapeutics (1)
5,555‌
344‌
Ionis
Pharmaceuticals (1)
3,473‌
154‌
Mirati
Therapeutics (1)
1,076‌
75‌
Natera (1)
2,123‌
93‌
Neurocrine
Biosciences (1)
2,349‌
249‌
Novavax (1)(2)
2,038‌
37‌
Sarepta
Therapeutics (1)
2,087‌
231‌
Seagen (1)
3,357‌
459‌
Ultragenyx
Pharmaceutical (1)
1,672‌
69‌
United
Therapeutics (1)
1,096‌
229‌
3,186‌
Health
Care
Equipment
&
Supplies
1.8%
Enovis (1)
1,292‌
60‌
Envista
Holdings (1)
4,003‌
131‌
Globus
Medical,
Class
A (1)
1,893‌
113‌
ICU
Medical (1)
511‌
77‌
Insulet (1)
1,702‌
390‌
Integra
LifeSciences
Holdings (1)
1,832‌
78‌
Masimo (1)
1,166‌
165‌
Novocure (1)
2,567‌
195‌
Penumbra (1)
887‌
168‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
8
Shares
$
Value
(Cost
and
value
in
$000s)
‡
QuidelOrtho (1)
1,216‌
87‌
Tandem
Diabetes
Care (1)
1,572‌
75‌
1,539‌
Health
Care
Providers
&
Services
1.3%
Acadia
Healthcare (1)
2,217‌
174‌
agilon
health (1)
4,653‌
109‌
Amedisys (1)
788‌
76‌
Chemed 
364‌
159‌
Encompass
Health 
2,410‌
109‌
Enhabit (1)
1,358‌
19‌
Guardant
Health (1)(2)
2,436‌
131‌
Oak
Street
Health (1)(2)
2,948‌
72‌
Premier,
Class
A 
2,897‌
98‌
Signify
Health,
Class
A (1)
1,820‌
53‌
Tenet
Healthcare (1)
2,654‌
137‌
1,137‌
Health
Care
Technology
1.2%
Certara (1)
3,021‌
40‌
Change
Healthcare (1)
6,582‌
181‌
Definitive
Healthcare (1)
941‌
15‌
Doximity,
Class
A (1)(2)
2,745‌
83‌
Teladoc
Health (1)
4,031‌
102‌
Veeva
Systems,
Class
A (1)
3,438‌
567‌
988‌
Life
Sciences
Tools
&
Services
1.5%
10X
Genomics,
Class
A (1)
2,270‌
65‌
Avantor (1)
15,100‌
296‌
Azenta 
1,824‌
78‌
Bruker 
2,716‌
144‌
Maravai
LifeSciences
Holdings,
Class
A (1)
2,784‌
71‌
QIAGEN (1)
5,627‌
232‌
Repligen (1)
1,370‌
256‌
Sotera
Health (1)
2,745‌
19‌
Syneos
Health (1)
2,520‌
119‌
1,280‌
Pharmaceuticals
1.0%
Elanco
Animal
Health (1)
10,950‌
136‌
Jazz
Pharmaceuticals (1)
1,515‌
202‌
Perrigo 
3,303‌
118‌
Royalty
Pharma,
Class
A 
9,075‌
364‌
820‌
Total
Health
Care
8,950‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
9
Shares
$
Value
(Cost
and
value
in
$000s)
‡
INDUSTRIALS
&
BUSINESS
SERVICES
14.3%
Aerospace
&
Defense
1.4%
Axon
Enterprise (1)
1,661‌
192‌
BWX
Technologies 
2,247‌
113‌
Curtiss-Wright 
957‌
133‌
HEICO 
1,106‌
159‌
HEICO,
Class
A 
1,960‌
225‌
Hexcel 
2,062‌
107‌
Mercury
Systems (1)
1,402‌
57‌
Spirit
AeroSystems
Holdings,
Class
A 
2,665‌
59‌
Woodward 
1,474‌
118‌
1,163‌
Air
Freight
&
Logistics
0.1%
GXO
Logistics (1)
2,600‌
91‌
91‌
Airlines
0.1%
Copa
Holdings,
Class
A (1)
713‌
48‌
JetBlue
Airways (1)
7,943‌
52‌
100‌
Building
Products
1.7%
Advanced
Drainage
Systems 
1,593‌
198‌
Armstrong
World
Industries 
1,160‌
92‌
AZEK (1)
2,869‌
48‌
Builders
FirstSource (1)
3,829‌
226‌
Carlisle 
1,272‌
357‌
Hayward
Holdings (1)(2)
1,944‌
17‌
Lennox
International 
791‌
176‌
Owens
Corning 
2,409‌
189‌
Trex (1)
2,756‌
121‌
1,424‌
Commercial
Services
&
Supplies
0.8%
Clean
Harbors (1)
1,274‌
140‌
Driven
Brands
Holdings (1)
1,435‌
40‌
IAA (1)
3,294‌
105‌
MSA
Safety 
927‌
101‌
Stericycle (1)
2,255‌
95‌
Tetra
Tech 
1,326‌
171‌
652‌
Construction
&
Engineering
1.0%
AECOM 
3,269‌
224‌
MasTec (1)
1,463‌
93‌
MDU
Resources 
4,967‌
136‌
Valmont
Industries 
521‌
140‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
10
Shares
$
Value
(Cost
and
value
in
$000s)
‡
WillScot
Mobile
Mini
Holdings (1)
5,167‌
208‌
801‌
Electrical
Equipment
1.8%
Acuity
Brands 
803‌
126‌
ChargePoint
Holdings (1)(2)
6,298‌
93‌
Hubbell 
1,326‌
296‌
nVent
Electric 
4,130‌
131‌
Plug
Power (1)(2)
12,869‌
270‌
Regal
Rexnord 
1,662‌
233‌
Sensata
Technologies
Holding 
3,830‌
143‌
Sunrun (1)
5,127‌
141‌
Vertiv
Holdings 
7,475‌
73‌
1,506‌
Machinery
2.1%
AGCO 
1,549‌
149‌
Allison
Transmission
Holdings 
2,441‌
82‌
Crane
Holdings 
1,172‌
103‌
Donaldson 
3,076‌
151‌
Esab 
1,314‌
44‌
Flowserve 
3,291‌
80‌
Gates
Industrial (1)
2,666‌
26‌
Graco 
4,162‌
249‌
ITT 
2,086‌
136‌
Lincoln
Electric
Holdings 
1,394‌
175‌
Middleby (1)
1,330‌
170‌
Oshkosh 
1,615‌
114‌
Timken 
1,569‌
93‌
Toro 
2,589‌
224‌
1,796‌
Marine
0.1%
Kirby (1)
1,505‌
91‌
91‌
Professional
Services
1.7%
Booz
Allen
Hamilton
Holding 
3,251‌
300‌
CACI
International,
Class
A (1)
578‌
151‌
Clarivate (1)
11,840‌
111‌
Dun
&
Bradstreet
Holdings 
6,193‌
77‌
FTI
Consulting (1)
829‌
137‌
KBR 
3,459‌
150‌
ManpowerGroup 
1,298‌
84‌
Science
Applications
International 
1,369‌
121‌
TransUnion 
4,766‌
284‌
1,415‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
11
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Road
&
Rail
2.6%
AMERCO 
226‌
115‌
Avis
Budget
Group (1)
747‌
111‌
Hertz
Global
Holdings (1)(2)
5,144‌
84‌
Knight-Swift
Transportation
Holdings 
3,840‌
188‌
Landstar
System 
905‌
131‌
Lyft,
Class
A (1)
7,791‌
102‌
Ryder
System 
1,217‌
92‌
Schneider
National,
Class
B 
1,433‌
29‌
Uber
Technologies (1)
46,527‌
1,233‌
XPO
Logistics (1)
2,518‌
112‌
2,197‌
Trading
Companies
&
Distributors
0.9%
Air
Lease 
2,625‌
81‌
Core
&
Main,
Class
A (1)(2)
1,851‌
42‌
MSC
Industrial
Direct,
Class
A 
1,137‌
83‌
SiteOne
Landscape
Supply (1)
1,114‌
116‌
Univar
Solutions (1)
4,136‌
94‌
Watsco 
818‌
211‌
WESCO
International (1)
1,113‌
133‌
760‌
Total
Industrials
&
Business
Services
11,996‌
INFORMATION
TECHNOLOGY
24.7%
Communications
Equipment
0.4%
Ciena (1)
3,714‌
150‌
Lumentum
Holdings (1)
1,726‌
118‌
Ubiquiti (2)
150‌
44‌
Viasat (1)
1,772‌
54‌
366‌
Electronic
Equipment,
Instruments
&
Components
1.4%
Arrow
Electronics (1)
1,574‌
145‌
Avnet 
2,335‌
84‌
Cognex 
4,324‌
179‌
Coherent (1)
3,138‌
109‌
IPG
Photonics (1)
835‌
71‌
Jabil 
3,338‌
193‌
Littelfuse 
604‌
120‌
National
Instruments 
3,216‌
122‌
TD
SYNNEX 
1,049‌
85‌
Vontier 
4,009‌
67‌
1,175‌
IT
Services
6.4%
Affirm
Holdings (1)(2)
4,482‌
84‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
12
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Amdocs 
2,997‌
238‌
Block,
Class
A (1)
13,010‌
716‌
Cloudflare,
Class
A (1)
6,906‌
382‌
Concentrix 
1,082‌
121‌
Euronet
Worldwide (1)
1,190‌
90‌
Genpact 
4,487‌
196‌
Globant (1)
1,001‌
187‌
GoDaddy,
Class
A (1)
3,877‌
275‌
Kyndryl
Holdings (1)
5,236‌
43‌
MongoDB (1)
1,613‌
320‌
Okta (1)
3,704‌
211‌
Shift4
Payments,
Class
A (1)
1,254‌
56‌
Snowflake,
Class
A (1)
7,547‌
1,283‌
SS&C
Technologies
Holdings 
5,529‌
264‌
Switch,
Class
A 
3,601‌
121‌
Thoughtworks
Holding (1)
2,301‌
24‌
Toast,
Class
A (1)
6,230‌
104‌
Twilio,
Class
A (1)
4,246‌
294‌
Western
Union 
9,463‌
128‌
WEX (1)
1,100‌
140‌
Wix.com (1)
1,321‌
103‌
5,380‌
Semiconductors
&
Semiconductor
Equipment
2.9%
Allegro
MicroSystems (1)
1,730‌
38‌
Cirrus
Logic (1)
1,373‌
94‌
Entegris 
3,674‌
305‌
First
Solar (1)
2,627‌
348‌
GLOBALFOUNDRIES (1)(2)
1,569‌
76‌
Lattice
Semiconductor (1)
3,379‌
166‌
Marvell
Technology 
20,891‌
896‌
MKS
Instruments 
1,409‌
116‌
Universal
Display 
1,069‌
101‌
Wolfspeed (1)
2,860‌
296‌
2,436‌
Software
13.1%
Alteryx,
Class
A (1)
1,461‌
82‌
AppLovin,
Class
A (1)(2)
5,413‌
105‌
Aspen
Technology (1)
664‌
158‌
Atlassian,
Class
A (1)
3,370‌
710‌
Avalara (1)
2,154‌
198‌
Bentley
Systems,
Class
B 
4,215‌
129‌
Bill.com
Holdings (1)
2,415‌
320‌
Black
Knight (1)
3,833‌
248‌
CCC
Intelligent
Solutions
Holdings (1)
4,402‌
40‌
Confluent,
Class
A (1)
3,062‌
73‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
13
Shares
$
Value
(Cost
and
value
in
$000s)
‡
Coupa
Software (1)
1,887‌
111‌
Crowdstrike
Holdings,
Class
A (1)
5,176‌
853‌
Datadog,
Class
A (1)
6,551‌
582‌
DocuSign (1)
4,896‌
262‌
Dolby
Laboratories,
Class
A 
1,534‌
100‌
DoubleVerify
Holdings (1)
1,636‌
45‌
Dropbox,
Class
A (1)
6,750‌
140‌
Dynatrace (1)
4,951‌
172‌
Elastic (1)
1,933‌
139‌
Fair
Isaac (1)
609‌
251‌
Five9 (1)
1,727‌
129‌
Guidewire
Software (1)
2,058‌
127‌
HubSpot (1)
1,128‌
305‌
Informatica,
Class
A (1)
1,006‌
20‌
Jamf
Holding (1)
1,702‌
38‌
Manhattan
Associates (1)
1,558‌
207‌
nCino (1)(2)
1,775‌
61‌
NCR (1)
3,239‌
62‌
New
Relic (1)
1,330‌
76‌
Nutanix,
Class
A (1)
5,367‌
112‌
Palantir
Technologies,
Class
A (1)
44,717‌
364‌
Palo
Alto
Networks (1)
7,237‌
1,185‌
Paycor
HCM (1)
1,234‌
36‌
Paylocity
Holding (1)
984‌
238‌
Pegasystems 
1,040‌
33‌
Procore
Technologies (1)
1,760‌
87‌
RingCentral,
Class
A (1)
2,149‌
86‌
SentinelOne,
Class
A (1)
4,628‌
118‌
Smartsheet,
Class
A (1)
3,087‌
106‌
Splunk (1)
3,983‌
299‌
Teradata (1)
2,585‌
80‌
UiPath,
Class
A (1)
9,347‌
118‌
Unity
Software (1)(2)
5,189‌
165‌
VMware,
Class
A 
5,155‌
549‌
Workday,
Class
A (1)
4,861‌
740‌
Zendesk (1)
3,016‌
229‌
Zoom
Video
Communications,
Class
A (1)
6,236‌
459‌
Zscaler (1)
2,058‌
338‌
11,085‌
Technology
Hardware,
Storage
&
Peripherals
0.5%
Dell
Technologies,
Class
C 
6,432‌
220‌
Pure
Storage,
Class
A (1)
6,994‌
191‌
411‌
Total
Information
Technology
20,853‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
14
Shares
$
Value
(Cost
and
value
in
$000s)
‡
MATERIALS
4.4%
Chemicals
1.5%
Ashland 
1,247‌
118‌
Axalta
Coating
Systems (1)
5,531‌
116‌
Chemours 
3,799‌
94‌
Element
Solutions 
5,751‌
94‌
Ginkgo
Bioworks
Holdings (1)
20,373‌
64‌
Huntsman 
4,715‌
116‌
NewMarket 
146‌
44‌
Olin 
3,338‌
143‌
RPM
International 
3,162‌
263‌
Scotts
Miracle-Gro 
1,043‌
45‌
Valvoline 
4,432‌
112‌
Westlake 
837‌
73‌
1,282‌
Construction
Materials
0.1%
Eagle
Materials 
923‌
99‌
99‌
Containers
&
Packaging
1.1%
AptarGroup 
1,633‌
155‌
Ardagh
Metal
Packaging (2)
4,129‌
20‌
Berry
Global
Group (1)
3,125‌
145‌
Crown
Holdings 
2,886‌
234‌
Graphic
Packaging
Holding 
7,629‌
151‌
Silgan
Holdings 
2,070‌
87‌
Sonoco
Products 
2,393‌
136‌
928‌
Metals
&
Mining
1.6%
Alcoa 
4,426‌
149‌
Cleveland-Cliffs (1)
12,720‌
172‌
MP
Materials (1)(2)
2,239‌
61‌
Reliance
Steel
&
Aluminum 
1,486‌
259‌
Royal
Gold 
1,612‌
151‌
Southern
Copper 
2,102‌
94‌
SSR
Mining 
5,364‌
79‌
Steel
Dynamics 
4,286‌
304‌
United
States
Steel 
5,896‌
107‌
1,376‌
Paper
&
Forest
Products
0.1%
Louisiana-Pacific 
1,842‌
94‌
94‌
Total
Materials
3,779‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
15
Shares
$
Value
(Cost
and
value
in
$000s)
‡
REAL
ESTATE
6.4%
Equity
Real
Estate
Investment
Trusts
5.9%
American
Homes
4
Rent,
Class
A,
REIT 
7,522‌
247‌
Americold
Realty
Trust,
REIT 
6,697‌
165‌
Apartment
Income
REIT,
REIT 
3,796‌
147‌
Brixmor
Property
Group,
REIT 
7,453‌
138‌
Cousins
Properties,
REIT 
3,809‌
89‌
CubeSmart,
REIT 
5,549‌
222‌
Douglas
Emmett,
REIT 
4,280‌
77‌
EastGroup
Properties,
REIT 
1,012‌
146‌
EPR
Properties,
REIT 
1,883‌
68‌
Equity
LifeStyle
Properties,
REIT 
4,400‌
276‌
First
Industrial
Realty
Trust,
REIT 
3,288‌
147‌
Gaming
&
Leisure
Properties,
REIT 
6,052‌
268‌
Healthcare
Realty
Trust,
REIT 
9,426‌
197‌
Highwoods
Properties,
REIT 
2,637‌
71‌
Hudson
Pacific
Properties,
REIT 
3,391‌
37‌
JBG
SMITH
Properties,
REIT 
2,655‌
49‌
Kilroy
Realty,
REIT 
2,910‌
123‌
Lamar
Advertising,
Class
A,
REIT 
2,152‌
177‌
Life
Storage,
REIT 
2,087‌
231‌
Medical
Properties
Trust,
REIT 
14,789‌
175‌
National
Retail
Properties,
REIT 
4,368‌
174‌
National
Storage
Affiliates
Trust,
REIT 
2,090‌
87‌
Omega
Healthcare
Investors,
REIT 
5,852‌
173‌
Park
Hotels
&
Resorts,
REIT 
5,523‌
62‌
Rayonier,
REIT 
3,585‌
107‌
Rexford
Industrial
Realty,
REIT 
4,250‌
221‌
SL
Green
Realty,
REIT (2)
1,630‌
65‌
Spirit
Realty
Capital,
REIT 
3,341‌
121‌
STORE
Capital,
REIT 
6,314‌
198‌
Sun
Communities,
REIT 
3,006‌
407‌
WP
Carey,
REIT 
4,731‌
330‌
4,995‌
Real
Estate
Management
&
Development
0.5%
Howard
Hughes (1)
909‌
50‌
Jones
Lang
LaSalle (1)
1,189‌
180‌
Opendoor
Technologies,
Class
A (1)
12,029‌
37‌
WeWork,
Class
A (1)
3,997‌
11‌
Zillow
Group,
Class
A (1)
1,479‌
42‌
Zillow
Group,
Class
C (1)
3,954‌
113‌
433‌
Total
Real
Estate
5,428‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
16
Shares
$
Value
(Cost
and
value
in
$000s)
‡
UTILITIES
1.7%
Electric
Utilities
0.6%
Avangrid 
1,795‌
75‌
Hawaiian
Electric
Industries 
2,678‌
93‌
IDACORP 
1,259‌
124‌
OGE
Energy 
4,966‌
181‌
473‌
Gas
Utilities
0.4%
National
Fuel
Gas 
2,155‌
133‌
UGI 
5,212‌
168‌
301‌
Independent
Power
&
Renewable
Electricity
Producers
0.4%
Brookfield
Renewable,
Class
A 
3,142‌
103‌
Vistra 
10,205‌
214‌
317‌
Water
Utilities
0.3%
Essential
Utilities 
5,740‌
238‌
238‌
Total
Utilities
1,329‌
Total
Common
Stocks
(Cost
$110,023)
84,282‌
SHORT-TERM
INVESTMENTS
0.0%
Money
Market
Funds
0.0%
T.
Rowe
Price
Government
Reserve
Fund,
3.07% (3)(4)
30,015‌
30‌
Total
Short-Term
Investments
(Cost
$30)
30‌
T.
ROWE
PRICE
Mid-Cap
Index
Fund
17
Shares
$
Value
(Cost
and
value
in
$000s)
‡
SECURITIES
LENDING
COLLATERAL
2.8%
INVESTMENTS
IN
A
POOLED
ACCOUNT
THROUGH
SECURITIES
LENDING
PROGRAM
WITH
STATE
STREET
BANK
AND
TRUST
COMPANY
2.8%
Money
Market
Funds
2.8%
T.
Rowe
Price
Government
Reserve
Fund,
3.07% (3)(4)
2,390,701‌
2,391‌
Total
Investments
in
a
Pooled
Account
through
Securities
Lending
Program
with
State
Street
Bank
and
Trust
Company
2,391‌
Total
Securities
Lending
Collateral
(Cost
$2,391)
2,391‌
Total
Investments
in
Securities
102.7%
(Cost
$112,444)
$
86,703‌
Other
Assets
Less
Liabilities
(2.7)%
(
2,245‌
)
Net
Assets
100.0%
$
84,458‌
‡
Shares
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
September
30,
2022.
(3)
Seven-day
yield
(4)
Affiliated
Companies
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
18
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,
2022.
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,
3.07%
$
—‌
$
—‌
$
—‌
++
Totals
$
—‌
#
$
—‌
$
—‌
+
Supplementary
Investment
Schedule
Affiliate
Value
12/31/21
Purchase
Cost
Sales
Cost
Value
09/30/22
T.
Rowe
Price
Government
Reserve
Fund,
3.07%
$
1,337‌
¤
¤
$
2,421‌
Total
$
2,421‌
^
#
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
$0
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
$2,421.
T.
ROWE
PRICE
Mid-Cap
Index
Fund
Unaudited
Notes
to
Portfolio
of
Investments
19
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
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 fund’s
own
assumptions
in
determining
fair
value)
T.
ROWE
PRICE
Mid-Cap
Index
Fund
20
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;
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
T.
ROWE
PRICE
Mid-Cap
Index
Fund
21
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
  On
September
30,
2022,
all
of
the
fund’s
financial
instruments
were
classified
as
Level
1,
based
on
the
inputs
used
to
determine
their
fair
values.
OTHER
MATTERS 
Unpredictable
events
such
as
environmental
or
natural
disasters,
war,
terrorism,
pandemics,
outbreaks
of
infectious
diseases,
and
similar
public
health
threats
may
significantly
affect
the
economy
and
the
markets
and
issuers
in
which
a
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.
Since
2020,
a
novel
strain
of
coronavirus
(COVID-19)
has
resulted
in
disruptions
to
global
business
activity
and
caused
significant
volatility
and
declines
in
global
financial
markets.
In
February
2022,
Russian
forces
entered
Ukraine
and
commenced
an
armed
conflict
leading
to
economic
sanctions
being
imposed
on
Russia
and
certain
of
its
citizens,
creating
impacts
on
Russian-related
stocks
and
debt
and
greater
volatility
in
global
markets.
These
are
recent
examples
of
global
events
which
may
have
an
impact
on
the
fund’s
performance,
which
could
be
negatively
impacted
if
the
value
of
a
portfolio
holding
were
harmed
by
these
and
such
other
events.
Management
is
actively
monitoring
the
risks
and
financial
impacts
arising
from
these
events.