PubMatic Ownership | Who Owns PubMatic?
PubMatic Ownership Summary
PubMatic is owned by 30.15% institutional investors, 0.76% insiders, and 69.09% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 6.80% 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 | 30.15% | 0.76% | 69.09% |
| Sector | Technology Stocks | 35.36% | 13.13% | 51.51% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 3.12M | 6.80% | $27.70M |
| Blackrock | 3.40M | 6.79% | $69.01M |
| Graham | 2.83M | 6.00% | $23.44M |
| Vanguard group | 2.38M | 5.18% | $21.10M |
| Wellington management group llp | 1.47M | 3.11% | $12.16M |
| Dimensional fund advisors lp | 1.27M | 2.77% | $11.28M |
| Renaissance | 1.22M | 2.65% | $10.82M |
| Centerbook partners lp | 1.15M | 2.50% | $10.17M |
| Royal bank of canada | 1.09M | 2.32% | $9.06M |
| Acadian asset management | 926.37K | 2.02% | $8.21M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| P.a.w. capital | 180.00K | 4.01% | $1.47M |
| Graham | 2.83M | 2.35% | $23.44M |
| S squared | 280.97K | 0.97% | $2.49M |
| Diversified investment strategies | 100.00K | 0.58% | $887.00K |
| Manatuck hill partners | 200.00K | 0.55% | $1.66M |
| Centerbook partners lp | 1.15M | 0.50% | $10.17M |
| Pinnacle | 142.90K | 0.43% | $1.27M |
| Corton capital | 11.36K | 0.23% | $94.08K |
| Dynamic technology lab private | 73.52K | 0.15% | $652.00K |
| Caitong asset management | 4.45K | 0.11% | $39.46K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Centerbook partners lp | 1.15M | 0.50% | 398.60K |
| Acadian asset management | 926.37K | 0.01% | 238.46K |
| Two sigma investments, lp | 384.90K | 0.00% | 228.88K |
| Manatuck hill partners | 200.00K | 0.55% | 200.00K |
| Morgan stanley | 320.39K | 0.00% | 160.77K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Nixon capital | - | - | -628.75K |
| Acuitas investments | - | - | -355.65K |
| Nordea investment management ab | - | - | -346.05K |
| Nuveen | 82.38K | 0.00% | -297.94K |
| Gratus capital | - | - | -280.90K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Manatuck hill partners | 200.00K | 0.55% | 200.00K | $1.66M |
| Dynamic technology lab private | 73.52K | 0.15% | 73.52K | $652.00K |
| Brevan howard capital management lp | 40.58K | 0.00% | 40.58K | $335.98K |
| Numerai gp | 34.72K | 0.04% | 34.72K | $287.47K |
| Hrt financial lp | 31.04K | 0.00% | 31.04K | $275.00K |
Sold Out
| Holder | Change |
|---|---|
| Nbc securities | -1.00 |
| Fortitude family office | -1.00 |
| Principal securities | -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 % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Dec 31, 2024 | 77 | -57.69% | 13,260,563 | -47.78% | 27 | 1.01% | 32 | -62.79% | 25 | -50.98% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 1.29M | 2.67% | - |
| Vanguard Total Stock Mkt Idx Inv | 1.18M | 2.51% | - |
| iShares Russell 2000 ETF | 929.22K | 1.96% | -7.57K |
| Vanguard Small Cap Index | 494.28K | 1.02% | 1.80K |
| Vanguard Institutional Extnd Mkt Idx Tr | 397.03K | 0.85% | 11.95K |
| Fidelity Small Cap Index | 366.05K | 0.77% | -4.06K |
| iShares Russell 2000 Growth ETF | 342.44K | 0.71% | - |
| iShares Russell 2000 Value ETF | 323.34K | 0.68% | - |
| Nuveen Quant Small Cap Equity R6 | 304.82K | 0.67% | - |
| Vanguard Small Cap Growth Index Inv | 274.01K | 0.56% | -364.00 |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Apr 13, 2026 | Goel Rajeev K. | CHIEF EXECUTIVE OFFICER | Sell | $380.50K |
| Apr 06, 2026 | Klimenko Paulina | CHIEF GROWTH OFFICER | Sell | $99.49K |
| Apr 06, 2026 | Pantelick Steven | CHIEF FINANCIAL OFFICER | Sell | $137.47K |
| Apr 02, 2026 | Goel Rajeev K. | CHIEF EXECUTIVE OFFICER | Sell | $407.98K |
| Apr 02, 2026 | Woods Andrew | GENERAL COUNSEL & SECRETARY | Sell | $46.67K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 9 |
| 2026 Q1 | - | 17 |
| 2025 Q4 | - | 16 |
| 2025 Q3 | - | 16 |
| 2025 Q2 | - | 18 |
PUBM Ownership FAQ
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