PUBM PubMatic, Inc.: institutional ownership and insider trading
168 funds reported holding $454M of PubMatic, Inc. in their latest 13F filings; in Q2 2026 funds net bought $20.5M, with 19 new positions and 17 funds selling out; over the last 12 months insiders bought $0 and sold $22.9M on the open market.
Famous investors holding PUBM
- Renaissance Technologies (Renaissance Technologies): $18.6M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $8.37M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $8.47M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $1.13M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $581K, 0.0% of the portfolio
Largest institutional holders of PUBM
- Graham Holdings Co (GHC) — $44.6M
- BlackRock, Inc. (BLK) — $43.0M
- VANGUARD CAPITAL MANAGEMENT LLC — $21.8M
- VANGUARD GROUP INC — $21.1M
- ACADIAN ASSET MANAGEMENT LLC — $20.6M
- DIMENSIONAL FUND ADVISORS LP — $19.6M
- RENAISSANCE TECHNOLOGIES LLC — $18.6M
- Walleye Trading LLC — $16.0M
- Whitefort Capital Management, LP — $14.6M
- GEODE CAPITAL MANAGEMENT, LLC — $13.0M
Recent PUBM insider trades
- Oct 22, 2026: Goel Rajeev K. sold 50,021 shares ($863K)
- Oct 16, 2026: Kumar Mukul sold 8,000 shares ($137K)
- Oct 5, 2026: Pantelick Steven sold 22,173 shares ($414K)
- Oct 5, 2026: Goel Amar K. sold 10,795 shares ($201K)
5%+ owners
- BlackRock, Inc.: 7.1% (Schedule 13G/A, filed Jan 21, 2026)
- Graham Holdings Company: 7.0% (Schedule 13G/A, filed May 14, 2025)