PUBMATIC, INC.

PublicCIK: 1422930
PUBMNASDAQ
Location

REDWOOD CITY, CA

13F Filings

Institutional Holders

PUBMATIC, INC.PUBM— Latest position per institution from SEC 13F filings

15

Institutional holders

29.82M

Total shares held

336.32M

Estimated value

1.49M

Avg. position size

1

GRAHAM HOLDINGS CO

CIK 104889

Shares

3.40M

Value

44.59K

Filed

Jun 30, 2026

2

BLACKROCK FINANCE, INC.

CIK 1364742

Shares

3.40M

Value

69.01M

Filed

Jun 30, 2024

3

BLACKROCK, INC.

CIK 2012383

Shares

3.28M

Value

43.03M

Filed

Jun 30, 2026

4

VANGUARD GROUP INC

CIK 102909

Shares

2.38M

Value

21.10M

Filed

Dec 31, 2025

5

VANGUARD CAPITAL MANAGEMENT LLC

CIK 2100119

Shares

1.66M

Value

21.80M

Filed

Jun 30, 2026

6

ACADIAN ASSET MANAGEMENT LLC

CIK 916542

Shares

1.57M

Value

20.64K

Filed

Jun 30, 2026

7

DIMENSIONAL FUND ADVISORS LP

CIK 354204

Shares

1.49M

Value

19.56M

Filed

Jun 30, 2026

8

RENAISSANCE TECHNOLOGIES LLC

CIK 1037389

Shares

1.42M

Value

18.64M

Filed

Jun 30, 2026

9

FIERA CAPITAL CORP

CIK 1505817

Shares

1.33M

Value

18.41M

Filed

Mar 31, 2023

10

WALLEYE TRADING LLC

CIK 1388391

Shares

1.22M

Value

15.95M

Filed

Jun 30, 2026

11

WELLINGTON MANAGEMENT GROUP LLP

CIK 902219

Shares

1.17M

Value

10.39M

Filed

Dec 31, 2025

12

WHITEFORT CAPITAL MANAGEMENT, LP

CIK 1884931

Shares

1.11M

Value

14.57M

Filed

Jun 30, 2026

13

GEODE CAPITAL MANAGEMENT, LLC

CIK 1214717

Shares

991.80K

Value

13.02M

Filed

Jun 30, 2026

14

VANGUARD PORTFOLIO MANAGEMENT LLC

CIK 2100121

Shares

947.55K

Value

12.43M

Filed

Jun 30, 2026

15

JACOBS LEVY EQUITY MANAGEMENT, INC

CIK 884414

Shares

863K

Value

11.32M

Filed

Jun 30, 2026

16

STATE STREET CORP

CIK 93751

Shares

854.15K

Value

11.21M

Filed

Jun 30, 2026

17

S SQUARED TECHNOLOGY, LLC

CIK 1322924

Shares

748.10K

Value

9.82M

Filed

Jun 30, 2026

18

SIMCOE CAPITAL LLC

CIK 2109203

Shares

693.90K

Value

9.10M

Filed

Jun 30, 2026

19

CITADEL ADVISORS LLC

CIK 1423053

Shares

645.28K

Value

8.47M

Filed

Jun 30, 2026

20

HIGHBRIDGE CAPITAL MANAGEMENT LLC

CIK 919185

Shares

644.59K

Value

8.42M

Filed

Jun 30, 2026

Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.