PubMatic, Inc. Class A Common Stock (PUBM) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for PUBM. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 147 institutions reported holding PUBM, with 30.2 million shares worth $395.4 million in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| Graham Holdings | 3,398,904 | $45M | UNCHANGED |
| BlackRock | 3,279,530 | $43M | INCREASED |
| Vanguard | 2,861,036 | $38M | INCREASED |
| Acadian Asset Management | 1,573,911 | $21M | DECREASED |
| Dimensional Fund Advisors | 1,491,121 | $20M | INCREASED |
Full institutional holdings, insider history, and congressional trades for PubMatic, Inc. Class A Common Stock on SentiSense.