PubMatic Ownership | Who Owns PubMatic?
PubMatic Ownership Summary
PubMatic is owned by 61.14% institutional investors, 1.00% insiders, and 37.86% retail investors. Graham is the largest institutional shareholder, holding 7.23% of PUBM shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 2.67% of its assets in PubMatic shares.
PUBM Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | PubMatic | 61.14% | 1.00% | 37.86% |
| Sector | Technology Stocks | 35.93% | 15.14% | 48.93% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Graham | 3.40M | 7.23% | $27.80M |
| Blackrock | 3.40M | 6.79% | $69.01M |
| Blackrock funding, inc. /de | 3.07M | 6.52% | $25.07M |
| Vanguard group | 2.38M | 5.18% | $21.10M |
| Centerbook partners lp | 1.74M | 3.71% | $14.25M |
| Acadian asset management | 1.58M | 3.35% | $12.89M |
| Renaissance | 1.54M | 3.28% | $12.60M |
| Dimensional fund advisors lp | 1.25M | 2.65% | $10.19M |
| Geode capital management | 950.61K | 2.02% | $7.78M |
| Jacobs levy equity management | 932.21K | 1.98% | $7.63M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| P.a.w. capital | 180.00K | 4.01% | $1.47M |
| Graham | 3.40M | 2.88% | $27.80M |
| S squared | 676.40K | 2.09% | $5.53M |
| Whitefort capital management, lp | 690.00K | 1.66% | $5.64M |
| Centerbook partners lp | 1.74M | 0.77% | $14.25M |
| Diversified investment strategies | 140.00K | 0.73% | $1.15M |
| Manatuck hill partners | 200.00K | 0.55% | $1.66M |
| Pinnacle | 157.88K | 0.42% | $1.29M |
| Corton capital | 11.36K | 0.23% | $94.08K |
| Zions bancorporation, n.a. | 87.34K | 0.08% | $1.28M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Whitefort capital management, lp | 690.00K | 1.66% | 690.00K |
| Acadian asset management | 1.58M | 0.02% | 650.17K |
| Centerbook partners lp | 1.74M | 0.77% | 595.04K |
| Graham | 3.40M | 2.88% | 567.44K |
| S squared | 676.40K | 2.09% | 395.43K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Wellington management group llp | - | - | -1.17M |
| Millennium management | 92.02K | 0.00% | -826.10K |
| Nixon capital | - | - | -628.75K |
| Acuitas investments | - | - | -355.65K |
| Nordea investment management ab | - | - | -346.05K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Whitefort capital management, lp | 690.00K | 1.66% | 690.00K | $5.64M |
| Vanguard fiduciary trust | 230.63K | 0.00% | 230.63K | $1.89M |
| Arrowstreet capital, limited partnership | 206.29K | 0.00% | 206.29K | $1.69M |
| Manatuck hill partners | 200.00K | 0.55% | 200.00K | $1.66M |
| Bridgeway capital management | 175.30K | 0.03% | 175.30K | $1.43M |
Sold Out
| Holder | Change |
|---|---|
| Principal securities | -1.00 |
| Nbc securities | -1.00 |
| Fortitude family office | -1.00 |
| Ifp advisors | -2.00 |
| West branch capital | -5.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 158 | -3.07% | 28,742,991 | 3.95% | 61 | 1.69% | 91 | 9.64% | 39 | -26.42% |
| Dec 31, 2025 | 76 | -53.37% | 13,850,709 | -49.90% | 30 | 0.88% | 35 | -57.32% | 27 | -40.00% |
| Sep 30, 2025 | 65 | -57.24% | 12,223,240 | -49.95% | 25 | 0.97% | 28 | -62.16% | 24 | -44.19% |
| Jun 30, 2025 | 161 | -3.59% | 25,873,720 | -0.68% | 54 | 1.89% | 76 | - | 47 | -16.07% |
| Mar 31, 2025 | 4 | -97.70% | 354,848 | -98.65% | - | 0.03% | 2 | -97.47% | 2 | -96.08% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 1.29M | 2.67% | - |
| Vanguard Total Stock Mkt Idx Inv | 1.21M | 2.60% | -40.00K |
| iShares Russell 2000 ETF | 1.04M | 2.24% | 6.17K |
| Vanguard Small Cap Index | 494.28K | 1.02% | 1.80K |
| Avantis US Small Cap Value ETF | 462.79K | 1.00% | - |
| Vanguard Institutional Extnd Mkt Idx Tr | 415.57K | 0.89% | 19.97K |
| Fidelity Small Cap Index | 379.85K | 0.82% | 3.43K |
| iShares Russell 2000 Value ETF | 365.58K | 0.79% | -2.52K |
| iShares Russell 2000 Growth ETF | 342.44K | 0.71% | - |
| DFA US Small Cap Value I | 323.94K | 0.70% | 46.95K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jul 15, 2026 | Goel Rajeev K. | CHIEF EXECUTIVE OFFICER | Sell | $56.45K |
| Jul 16, 2026 | Goel Rajeev K. | CHIEF EXECUTIVE OFFICER | Sell | $124.96K |
| Jul 16, 2026 | Kumar Mukul | PRESIDENT, ENGINEERING | Sell | $109.34K |
| Jul 16, 2026 | Woods Andrew | GENERAL COUNSEL & SECRETARY | Sell | $45.37K |
| Jul 06, 2026 | Pantelick Steven | CHIEF FINANCIAL OFFICER | Sell | $168.34K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q3 | - | 14 |
| 2026 Q2 | - | 16 |
| 2026 Q1 | - | 17 |
| 2025 Q4 | - | 16 |
| 2025 Q3 | - | 16 |
PUBM Ownership FAQ
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