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PubMatic, Inc.

PUBM
Exchange
Nasdaq
Industry
Services-Computer Programming, Data Processing, Etc.
SEC CIK
0001422930

In the last 90 days, PubMatic, Inc. insiders filed 0 open-market purchases and 21 sales; 153 institutions reported holding it in 13F filings for Q2 2026, worth $399.4M in total; no superinvestor holds it.

13F holders, Q4 2025

Institutional positions in PubMatic, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
152
+4 vs. Q3 2025
Shares held
27.6M
+67.1K (+0.2%) vs. Q3 2025
Total value
$245.2M
+$16.9M (+7.4%) vs. Q3 2025
New holders
30
52 more added
Sold out
26
52 more reduced

2 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting PUBM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2025: 152 institutions
Q1 2021: 61 institutionsQ2 2021: 87 institutionsQ3 2021: 100 institutionsQ4 2021: 165 institutionsQ1 2022: 138 institutionsQ2 2022: 153 institutionsQ3 2022: 157 institutionsQ4 2022: 162 institutionsQ1 2023: 149 institutionsQ2 2023: 141 institutionsQ3 2023: 143 institutionsQ4 2023: 148 institutionsQ1 2024: 179 institutionsQ2 2024: 193 institutionsQ3 2024: 167 institutionsQ4 2024: 161 institutionsQ1 2025: 157 institutionsQ2 2025: 149 institutionsQ3 2025: 150 institutionsQ4 2025: 152 institutionsQ1 2026: 153 institutionsQ2 2026: 153 institutions
Value heldQ4 2025: $245.2M
Q1 2021: $305.1MQ2 2021: $350.3MQ3 2021: $248.9MQ4 2021: $608.3MQ1 2022: $462.1MQ2 2022: $354.4MQ3 2022: $362.5MQ4 2022: $283.9MQ1 2023: $303.4MQ2 2023: $379.2MQ3 2023: $251.1MQ4 2023: $357.5MQ1 2024: $576.7MQ2 2024: $518.8MQ3 2024: $377.6MQ4 2024: $386.3MQ1 2025: $238.4MQ2 2025: $321.6MQ3 2025: $228.7MQ4 2025: $245.2MQ1 2026: $236.0MQ2 2026: $399.4M
Institutions holding PUBM and their total value by quarter
QuarterHoldersValue
Q2 2026153$399.4M
Q1 2026153$236.0M
Q4 2025152$245.2M
Q3 2025150$228.7M
Q2 2025149$321.6M
Q1 2025157$238.4M
Q4 2024161$386.3M
Q3 2024167$377.6M
Q2 2024193$518.8M
Q1 2024179$576.7M
Q4 2023148$357.5M
Q3 2023143$251.1M
Q2 2023141$379.2M
Q1 2023149$303.4M
Q4 2022162$283.9M
Q3 2022157$362.5M
Q2 2022153$354.4M
Q1 2022138$462.1M
Q4 2021165$608.3M
Q3 2021100$248.9M
Q2 202187$350.3M
Q1 202161$305.1M

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding PubMatic, Inc.; share changes are against Q3 2025.

Institutions holding PUBM in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Gsa Capital Partners LLP77,844$690.0K0.06%+45,728+142.4%Added
P.A.W. Capital Corp80,000$709.6K1.61%−40,000−33.3%Reduced
Wells Fargo & Company81,994$727.3K0.00%−1,927−2.3%Reduced
Nuveen, LLC82,378$730.7K0.00%−297,943−78.3%Reduced
Franklin Resources Inc93,925$833.1K0.00%+13,640+17.0%Added
JPMorgan Chase & Co94,931$842.0K0.00%−253,254−72.7%Reduced
Diversified Investment Strategies, LLC100,000$887.0K0.58%+15,000+17.6%Added
Bank of America Corp100,010$887.1K0.00%+18,737+23.1%Added
Tudor Investment Corp Et Al100,637$892.6K0.00%+100,637New
Invesco Ltd.105,509$935.9K0.00%+17,581+20.0%Added
Schonfeld Strategic Advisors LLC107,854$956.7K0.00%+107,854New
American Century Companies Inc114,120$1.01M0.00%−2,335−2.0%Reduced
Leibman Financial Services, Inc.115,610$1.03M0.74%+10,786+10.3%Added
Bank of New York Mellon Corp121,350$1.08M0.00%−14,566−10.7%Reduced
Barclays PLC126,189$1.12M0.00%+1,723+1.4%Added
Mirae Asset Global ETFs Holdings Ltd.132,163$1.17M0.00%+5,402+4.3%Added
Pinnacle Holdings, LLC142,904$1.27M0.43%+4,082+2.9%Added
UBS Group AG143,783$1.28M0.00%−278,847−66.0%Reduced
Susquehanna International Group, LLP144,293$1.28M0.00%−52,302−26.6%Reduced
Deutsche Bank AG145,217$1.29M0.00%−1,525−1.0%Reduced
Marshall Wace, LLP145,345$1.29M0.00%+145,345New
Avestar Capital, LLC150,000$1.33M0.09%−130,000−46.4%Reduced
Walleye Capital LLC156,573$1.39M0.01%+28,156+21.9%Added
Point72 Asset Management, L.P.158,914$1.41M0.00%+158,914New
Ameriprise Financial Inc161,867$1.44M0.00%+23,862+17.3%Added
Two Sigma Advisers, LP182,600$1.62M0.00%+9,200+5.3%Added
Jane Street Group, LLC206,774$1.83M0.00%+137,851+200.0%Added
Goldman Sachs Group Inc249,486$2.21M0.00%−47,017−15.9%Reduced
Citadel Advisors LLC266,143$2.36M0.00%−46,985−15.0%Reduced
Northern Trust Corp269,533$2.39M0.00%−72,328−21.2%Reduced
Panagora Asset Management Inc273,312$2.42M0.01%+13,853+5.3%Added
S Squared Technology, LLC280,972$2.49M0.97%+20,000+7.7%Added
Charles Schwab Investment Management Inc300,280$2.66M0.00%+3,389+1.1%Added
Trexquant Investment LP307,249$2.73M0.02%+250,036+437.0%Added
Algert Global LLC314,634$2.79M0.04%+192,060+156.7%Added
Morgan Stanley320,392$2.84M0.00%+160,771+100.7%Added
Simcoe Capital LLC408,690$3.63M3.41%+408,690New
Two Sigma Investments, LP474,180$4.21M0.01%+89,275+23.2%Added
D. E. Shaw & Co., Inc.546,493$4.85M0.00%−25,982−4.5%Reduced
State Street Corp830,003$7.36M0.00%−97,231−10.5%Reduced
Royal Bank of Canada863,188$7.66M0.00%−230,892−21.1%Reduced
Geode Capital Management, LLC905,941$8.04M0.00%−55,549−5.8%Reduced
Millennium Management LLC918,127$8.14M0.01%+699,549+320.0%Added
Acadian Asset Management LLC926,371$8.21M0.01%+238,457+34.7%Added
Jacobs Levy Equity Management, Inc929,249$8.24M0.03%+77,566+9.1%Added
CenterBook Partners LP1,147,055$10.2M0.50%+398,595+53.3%Added
Wellington Management Group LLP1,170,952$10.4M0.00%−297,551−20.3%Reduced
Renaissance Technologies LLC1,219,333$10.8M0.02%−136,267−10.1%Reduced
Dimensional Fund Advisors LP1,271,950$11.3M0.00%−194,438−13.3%Reduced
Vanguard Group Inc2,379,185$21.1M0.00%−119,787−4.8%Reduced
Graham Holdings Co2,831,462$25.1M2.32%00.0%Unchanged
BlackRock, Inc.3,123,167$27.7M0.00%−264,811−7.8%Reduced
Acuitas Investments, LLC0$00.00%−355,651−100.0%Sold out
Roubaix Capital, LLC0$00.00%−271,335−100.0%Sold out
Manatuck Hill Partners, LLC0$00.00%−200,000−100.0%Sold out
Connor, Clark & Lunn Investment Management Ltd.0$00.00%−77,044−100.0%Sold out
Swiss National Bank0$00.00%−73,200−100.0%Sold out
Counterpoint Mutual Funds LLC0$00.00%−43,429−100.0%Sold out
Brevan Howard Capital Management LP0$00.00%−40,577−100.0%Sold out
IMC-Chicago, LLC0$00.00%−30,356−100.0%Sold out
Janus Henderson Group PLC0$00.00%−22,198−100.0%Sold out
FourThought Financial Partners, LLC0$00.00%−22,085−100.0%Sold out
Sherbrooke Park Advisers LLC0$00.00%−19,301−100.0%Sold out
Antipodes Partners Ltd0$00.00%−19,065−100.0%Sold out
Diametric Capital, LP0$00.00%−15,789−100.0%Sold out
Arizona State Retirement System0$00.00%−11,305−100.0%Sold out
KLP Kapitalforvaltning AS0$00.00%−7,200−100.0%Sold out
Zurcher Kantonalbank (Zurich Cantonalbank)0$00.00%−5,852−100.0%Sold out
Quantbot Technologies LP0$00.00%−3,038−100.0%Sold out
Caitong International Asset Management Co., Ltd0$00.00%−2,534−100.0%Sold out
Banque Cantonale Vaudoise0$00.00%−1,006−100.0%Sold out
Advisory Services Network, LLC0$00.00%−434−100.0%Sold out
Hantz Financial Services, Inc.0$00.00%−400−100.0%Sold out
Smartleaf Asset Management LLC0$00.00%−131−100.0%Sold out
Main Street Group, LTD0$00.00%−100−100.0%Sold out
Hughes Financial Services, LLC0$00.00%−60−100.0%Sold out
Measured Wealth Private Client Group, LLC0$00.00%−27−100.0%Sold out
West Branch Capital LLC0$00.00%−5−100.0%Sold out
Wolverine Trading, LLC––––Not filed
Corton Capital Inc.––––Not filed