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Xencor XNCR

US equityMarket cap rank #2814
$25.63 +$0.79 (+3.18%)
Pre-market · Oct 6, 5:40 am ET · After hours $25.70 +0.27%
Open$24.83
Prev close$24.84
Day range$24.83 – $26.01
Volume1.28M
Market cap$1.91B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership113.8%-2.39 pts vs. prior quarter
Institutions holding246+0 vs. prior quarter
Insider trades (recent)28 buys / 22 sellsNet buying
Short interest21.18% of floatDays to cover 13.2 · as of 15 Sep 2026
Short-sale volume share14.8%5-day average of daily volume

Short-sale volume as % of daily volume

7%12%16%21%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$5.07M (7 inflow days, 13 outflow days).

The five largest holders on file together own 57.9% of shares outstanding.

Largest holders

  • BlackRock18.36%
  • PRIMECAP Management Company13.69%
  • BVF Partners L.P.9.59%
  • RTW Investments, LP9.12%
  • RA Capital Management, L.P.7.09%
  • State Street Global Advisors6.66%
  • Vanguard Capital Management, LLC5.06%
  • TCG Crossover Management, LLC3.30%

By investor type

  • Mutual Fund68.35%
  • Hedge Fund25.51%
  • VC/PE Fund12.54%
  • Public Company5.71%
  • Individual/Insider1.19%
  • Government Pension Fund0.79%
  • Private Company0.72%
  • Insurance Company0.06%

Reported short interest has risen from 15.52% to 21.18% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 15,751,444 21.2% 13.2
31 Aug 2026 14,913,076 20.1% 9.5
14 Aug 2026 14,188,820 19.1% 14.1
31 Jul 2026 11,344,506 15.3% 8.8
15 Jul 2026 10,842,171 14.6% 13.6
30 Jun 2026 11,506,336 15.5% 9.7

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