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

29.60M

Total shares held

252.61M

Estimated value

1.48M

Avg. position size

1

GRAHAM HOLDINGS CO

CIK 104889

Shares

3.40M

Value

27.80K

Filed

Mar 31, 2026

2

BLACKROCK FINANCE, INC.

CIK 1364742

Shares

3.40M

Value

69.01M

Filed

Jun 30, 2024

3

BLACKROCK, INC.

CIK 2012383

Shares

3.07M

Value

25.07M

Filed

Mar 31, 2026

4

VANGUARD GROUP INC

CIK 102909

Shares

2.38M

Value

21.10M

Filed

Dec 31, 2025

5

CENTERBOOK PARTNERS LP

CIK 1872738

Shares

1.74M

Value

14.25M

Filed

Mar 31, 2026

6

VANGUARD CAPITAL MANAGEMENT LLC

CIK 2100119

Shares

1.61M

Value

13.20M

Filed

Mar 31, 2026

7

ACADIAN ASSET MANAGEMENT LLC

CIK 916542

Shares

1.58M

Value

12.89K

Filed

Mar 31, 2026

8

RENAISSANCE TECHNOLOGIES LLC

CIK 1037389

Shares

1.54M

Value

12.60M

Filed

Mar 31, 2026

9

FIERA CAPITAL CORP

CIK 1505817

Shares

1.33M

Value

18.41M

Filed

Mar 31, 2023

10

DIMENSIONAL FUND ADVISORS LP

CIK 354204

Shares

1.25M

Value

10.19M

Filed

Mar 31, 2026

11

WELLINGTON MANAGEMENT GROUP LLP

CIK 902219

Shares

1.17M

Value

10.39M

Filed

Dec 31, 2025

12

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 1446194

Shares

999.38K

Value

8.17M

Filed

Mar 31, 2026

13

GEODE CAPITAL MANAGEMENT, LLC

CIK 1214717

Shares

950.61K

Value

7.78M

Filed

Mar 31, 2026

14

JACOBS LEVY EQUITY MANAGEMENT, INC

CIK 884414

Shares

932.21K

Value

7.63M

Filed

Mar 31, 2026

15

STATE STREET CORP

CIK 93751

Shares

791.42K

Value

6.47M

Filed

Mar 31, 2026

16

ROYAL BANK OF CANADA

CIK 1000275

Shares

740.28K

Value

6.05M

Filed

Mar 31, 2026

17

WALLEYE TRADING LLC

CIK 1388391

Shares

714.18K

Value

5.84M

Filed

Mar 31, 2026

18

WHITEFORT CAPITAL MANAGEMENT, LP

CIK 1884931

Shares

690K

Value

5.64M

Filed

Mar 31, 2026

19

S SQUARED TECHNOLOGY, LLC

CIK 1322924

Shares

676.40K

Value

5.53M

Filed

Mar 31, 2026

20

VANGUARD PORTFOLIO MANAGEMENT LLC

CIK 2100121

Shares

638.78K

Value

5.23M

Filed

Mar 31, 2026

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