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Who owns PubMatic (PUBM) stock

148 funds reported PubMatic (PUBM) shares in their latest 13F filings, worth $370M in all. The largest holder is BlackRock ($43.0M). Last quarter 69 funds added to their stakes and 57 cut them.

Largest holders of PUBM (13F)Largest holders of PUBM (13F)BlackRock$43.0MVanguard Capital Management LLC$21.8MVanguard Group$21.1MAcadian Asset Management LLC$20.6MDimensional Fund Advisors LP$19.6MRenaissance Technologies LLC$18.6MWhitefort Capital Management, LP$14.6MGeode Capital Management, LLC$13.0MVanguard Portfolio Management LLC$12.4MJacobs Levy Equity Management$11.3M

Largest holders (13F)

FundSharesValueChangeQuarter
BlackRock3,279,530$43.0Mincrease2026-06-30
Vanguard Capital Management LLC1,661,312$21.8Mincrease2026-06-30
Vanguard Group2,379,185$21.1Mdecrease2025-12-31
Acadian Asset Management LLC1,573,911$20.6Mdecrease2026-06-30
Dimensional Fund Advisors LP1,491,121$19.6Mincrease2026-06-30
Renaissance Technologies LLC1,421,049$18.6Mdecrease2026-06-30
Whitefort Capital Management, LP1,110,656$14.6Mincrease2026-06-30
Geode Capital Management, LLC991,800$13.0Mincrease2026-06-30
Vanguard Portfolio Management LLC947,548$12.4Mincrease2026-06-30
Jacobs Levy Equity Management862,996$11.3Mdecrease2026-06-30
State Street854,147$11.2Mincrease2026-06-30
S Squared Technology, LLC748,099$9.8Mincrease2026-06-30
Simcoe Capital LLC693,903$9.1Mincrease2026-06-30
Highbridge Capital Management LLC644,593$8.4Mnew2026-06-30
American Century Companies642,076$8.4Mincrease2026-06-30

PubMatic's latest quarter

PubMatic, Q2 2026: revenue $78.6M (+10% year over year), operating margin 0.7%, net loss $1.2M, operating cash flow $20.2M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most PUBM stock?

By the latest 13F filings: BlackRock ($43.0M); Vanguard Capital Management LLC ($21.8M); Vanguard Group ($21.1M); Acadian Asset Management LLC ($20.6M); Dimensional Fund Advisors LP ($19.6M).

What is the short interest in PUBM?

3,074,341 shares were sold short at the 2026-10-15 settlement, 13.05% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.