BeStock  

Pubmatic PUBM

US equityMarket cap rank #3365Software - Application
$18.57 +$0.22 (+1.20%)
Pre-market · Oct 8, 7:40 am ET · After hours $18.94 +1.99%
Open$18.36
Prev close$18.35
Day range$18.28 – $18.73
Volume519.7K
Market cap$845.86M
P/E (TTM)–
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership68.9%+0.29 pts vs. prior quarter
Institutions holding192-1 vs. prior quarter
Insider trades (recent)7 buys / 43 sellsNet selling
Short interest5.35% of floatDays to cover 4.3 · as of 15 Sep 2026
Short-sale volume share23.0%5-day average of daily volume

Short-sale volume as % of daily volume

14%19%25%30%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$2.88M (13 inflow days, 7 outflow days).

Net flow by order size, last 20 sessions

+$1.6MSuper+$1.3MBig+$3.1MMid+$1.2MSmall

Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.

The five largest holders on file together own 33.4% of shares outstanding.

Largest holders

  • Amar Goel9.40%
  • Graham Holdings Company7.46%
  • BlackRock7.20%
  • Rajeev Goel5.21%
  • Vanguard Capital Management, LLC4.17%
  • Acadian Asset Management LLC3.45%
  • Dimensional Fund Advisors3.27%
  • Renaissance Technologies Corp.3.12%

By investor type

  • Mutual Fund40.33%
  • Individual/Insider16.89%
  • Hedge Fund16.49%
  • Public Company8.64%
  • Private Company1.49%
  • Insurance Company1.18%
  • Government Pension Fund0.44%
  • Sovereign Wealth Fund0.33%

Reported short interest has fallen from 6.45% to 5.35% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Recent institutional activity

HolderTypePeriodShare changeNew stake
Nuveen Asset Management LLC Insurance Company 2026/Q3 +529,453 1.2%
Highbridge Capital Management, LLC Hedge Fund 2026/Q3 +644,593 1.4%
American Century Investment Management Mutual Fund 2026/Q3 +529,804 1.4%
Whitefort Capital Management, LP Hedge Fund 2026/Q3 +420,656 2.4%
Teachers Insurance and Annuity Association-College Retirement Equities Fund Mutual Fund 2026/Q3 +363,229 1.0%
Vanguard Portfolio Management, LLC Mutual Fund 2026/Q3 +308,763 2.1%
Citadel Advisors LLC Hedge Fund 2026/Q3 +265,837 0.9%
Dimensional Fund Advisors Mutual Fund 2026/Q3 +245,762 3.3%
BlackRock Mutual Fund 2026/Q3 +214,494 7.2%
Simcoe Capital, LLC Hedge Fund 2026/Q3 +207,651 1.5%
Boothbay Fund Management, LLC Hedge Fund 2026/Q3 +181,615 0.4%
AQR Capital Management Hedge Fund 2026/Q3 +158,767 0.6%
UBS Asset Management Mutual Fund 2026/Q3 +107,453 0.4%
Two Sigma Investments, LP Hedge Fund 2026/Q3 +103,653 1.4%
Leap Investments LP Mutual Fund 2026/Q3 +100,500 0.2%

Institutional buy/sell activity by reporting period, largest moves first.

Insider transactions

DateInsiderTitleTransactionSharesPriceHeld after
4 Oct 2026 Amar Goel Founder, Chief Innovation Officer & Chairman Automatic Disposition -10,795 $18.66 35,580
4 Oct 2026 Steven Pantelick Chief Financial Officer Automatic Disposition -22,173 $18.66 10,353
4 Oct 2026 Andrew Woods General Counsel Automatic Disposition -10,079 $18.65 39,761
1 Oct 2026 Amar Goel Founder, Chief Innovation Officer & Chairman Derivative Exercise and Sale -7,302 $19.43 46,375
1 Oct 2026 Steven Pantelick Chief Financial Officer Derivative Exercise and Sale -23,491 $19.43 32,526
1 Oct 2026 Mukul Kumar Co-Founder & President of Engineering Derivative Exercise and Sale -7,878 $19.43 125,041
1 Oct 2026 Rajeev Goel Chief Executive Officer Derivative Exercise and Sale -50,233 $19.43 47,424
1 Oct 2026 Andrew Woods General Counsel Derivative Exercise and Sale -5,744 $19.43 49,840
30 Sep 2026 Amar Goel Founder, Chief Innovation Officer & Chairman Derivative Exercise and Retained +10,795 – 46,375
30 Sep 2026 Steven Pantelick Chief Financial Officer Derivative Exercise and Retained +22,173 – 32,526
30 Sep 2026 Mukul Kumar Co-Founder & President of Engineering Derivative Exercise and Retained +12,096 – 125,041
30 Sep 2026 Rajeev Goel Chief Executive Officer Derivative Exercise and Retained +47,424 – 47,424
30 Sep 2026 Andrew Woods General Counsel Derivative Exercise and Retained +10,079 – 49,840
30 Sep 2026 Lisa Gimbel Chief Accounting Officer & Principal Accounting Officer Automatic Disposition -500 $18.99 15,927
23 Sep 2026 Rajeev Goel Chief Executive Officer Other Disposition -12,500 – 2,324,694
23 Sep 2026 Rajeev Goel Chief Executive Officer Automatic Disposition -16,083 $18.54 –
23 Sep 2026 Rajeev Goel Chief Executive Officer Derivative Exercise and Sale -34,370 $18.54 –
23 Sep 2026 Rajeev Goel Chief Executive Officer Derivative Exercise and Sale -21,870 $2.15 2,324,694
15 Sep 2026 Mukul Kumar Co-Founder & President of Engineering Derivative Exercise and Sale -8,000 – 135,600
2 Sep 2026 Amar Goel Founder, Chief Innovation Officer & Chairman Derivative Exercise and Sale -6,250 – 4,234,306

From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 2,438,982 5.4% 4.3
31 Aug 2026 2,264,271 5.0% 3.6
14 Aug 2026 2,070,275 4.5% 2.0
31 Jul 2026 2,247,700 4.8% 5.3
15 Jul 2026 2,944,796 6.3% 6.7
30 Jun 2026 2,996,126 6.5% 4.7

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