PubMatic, Inc. - Class A Stock (PUBM) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2019 to Q4 2025

Type / Class
Equity / Class A Stock
Symbol
PUBM on Nasdaq
Shares outstanding
38,147,944
Price per share
$7.54
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
27,479,269
Total reported value
$243,739,181
% of total 13F portfolios
0%
Share change
-425,068
Value change
-$3,050,143
Number of holders
148
Price from insider filings
$7.54
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of PubMatic, Inc. - Class A Stock (PUBM) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Graham Holdings Co 7% $28,201,362 2,831,462 Graham Holdings Company 31 Mar 2025
BlackRock, Inc. 7.1% $24,024,430 2,708,504 BlackRock, Inc. 31 Dec 2025
VANGUARD GROUP INC 6.5% -25% $32,483,067 -$9,982,155 2,611,179 -24% The Vanguard Group 30 Jun 2025

As of 31 Dec 2025, 148 institutional investors reported holding 27,479,269 shares of PubMatic, Inc. - Class A Stock (PUBM). This represents 72% of the company’s total 38,147,944 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of PubMatic, Inc. - Class A Stock (PUBM) together control 59% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 8.2% 3,123,167 -7.8% 0% $27,702,491
Graham Holdings Co 7.4% 2,831,462 0% 2.3% $25,115,000
VANGUARD GROUP INC 6.2% 2,379,185 -4.8% 0% $21,103,371
DIMENSIONAL FUND ADVISORS LP 3.3% 1,271,950 -13% 0% $11,282,650
RENAISSANCE TECHNOLOGIES LLC 3.2% 1,219,333 -10% 0.02% $10,815,484
WELLINGTON MANAGEMENT GROUP LLP 3.1% 1,170,952 -20% 0% $10,386,344
CenterBook Partners LP 3% 1,147,055 +53% 0.5% $10,174,378
JACOBS LEVY EQUITY MANAGEMENT, INC 2.4% 929,249 +9.1% 0.03% $8,242,439
ACADIAN ASSET MANAGEMENT LLC 2.4% 926,371 +35% 0.01% $8,212,000
MILLENNIUM MANAGEMENT LLC 2.4% 918,127 +320% 0.01% $8,143,786
GEODE CAPITAL MANAGEMENT, LLC 2.4% 905,941 -5.8% 0% $8,037,533
ROYAL BANK OF CANADA 2.3% 863,188 -21% 0% $7,656,000
STATE STREET CORP 2.2% 830,003 -10% 0% $7,362,127
D. E. Shaw & Co., Inc. 1.4% 546,493 -4.5% 0% $4,847,393
TWO SIGMA INVESTMENTS, LP 1.2% 474,180 +23% 0.01% $4,205,977
Simcoe Capital LLC 1.1% 408,690 0% 3.4% $3,625,080
MORGAN STANLEY 0.84% 320,392 +101% 0% $2,841,880
ALGERT GLOBAL LLC 0.82% 314,634 +157% 0.04% $2,791,000
Trexquant Investment LP 0.81% 307,249 +437% 0.02% $2,725,299
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.79% 300,280 +1.1% 0% $2,663,484
S Squared Technology, LLC 0.74% 280,972 +7.7% 0.97% $2,492,222
PANAGORA ASSET MANAGEMENT INC 0.72% 273,312 +5.3% 0.01% $2,424,277
NORTHERN TRUST CORP 0.71% 269,533 -21% 0% $2,390,757
CITADEL ADVISORS LLC 0.7% 266,143 -15% 0% $2,360,689
GOLDMAN SACHS GROUP INC 0.65% 249,486 -16% 0% $2,212,941

Institutional Holders of PubMatic, Inc. - Class A Stock (PUBM) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 27,479,269 $243,739,181 -$3,050,143 $8.87 148
2025 Q3 27,616,926 $228,672,580 +$10,672,496 $8.28 149
2025 Q2 25,873,699 $321,885,289 +$2,432,784 $12.44 148
2025 Q1 26,049,629 $238,071,066 -$7,238,984 $9.14 155
2024 Q4 26,285,953 $386,256,244 +$12,372,586 $14.69 160
2024 Q3 25,384,652 $377,488,422 -$11,530,482 $14.87 163
2024 Q2 25,536,541 $518,597,091 +$21,849,009 $20.31 190
2024 Q1 24,086,651 $571,329,849 +$56,314,665 $23.72 177
2023 Q4 21,913,831 $357,396,303 +$19,571,824 $16.31 145
2023 Q3 20,741,996 $250,955,659 -$2,068,078 $12.10 140
2023 Q2 20,691,193 $378,234,050 -$12,628,527 $18.28 135
2023 Q1 21,882,233 $302,345,038 -$1,937,519 $13.82 142
2022 Q4 22,159,452 $283,877,249 -$2,542,001 $12.81 154
2022 Q3 21,928,376 $362,581,390 -$3,638,661 $16.63 146
2022 Q2 22,167,063 $352,287,078 +$58,826,068 $15.89 143
2022 Q1 17,665,130 $461,641,992 -$20,773,359 $26.12 130
2021 Q4 17,814,819 $606,722,300 +$288,340,509 $34.05 160
2021 Q3 9,414,715 $247,947,229 -$24,408,282 $26.35 96
2021 Q2 8,953,351 $350,345,837 +$99,863,652 $39.07 86
2021 Q1 5,484,949 $270,678,019 +$47,420,169 $49.32 57
2020 Q4 4,933,511 $137,704,000 +$137,702,999 $27.96 43
2020 Q3 30 $1,000 $33.33 1
2020 Q2 30 $1,000 $33.33 1
2020 Q1 30 $1,000 $33.33 1
2019 Q4 30 $1,000 $33.33 1
2019 Q3 30 $1,000 $33.33 1
2019 Q2 30 $1,000 $33.33 1
2019 Q1 30 $1,000 $33.33 1