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GeneDx Holdings WGS

US equityMarket cap rank #2690Diagnostics & Research
$76.27 +$3.18 (+4.35%)
Market closed · Oct 5, 10:20 pm ET · Last extended-hours $76.96 +0.91%
Open$73.35
Prev close$73.09
Day range$72.04 – $77.20
Volume855.2K
Market cap$2.27B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership106.0%-2.65 pts vs. prior quarter
Institutions holding279-3 vs. prior quarter
Insider trades (recent)34 buys / 16 sellsNet buying
Short interest19.73% of floatDays to cover 12.1 · as of 15 Sep 2026
Short-sale volume share14.7%5-day average of daily volume

Short-sale volume as % of daily volume

9%16%23%31%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$10.93M (8 inflow days, 12 outflow days).

The five largest holders on file together own 45.0% of shares outstanding.

Largest holders

  • Corvex Management LP16.04%
  • Casdin Capital, LLC12.43%
  • BlackRock5.72%
  • The Goldman Sachs Group, Inc.5.48%
  • ARK Investment Management LLC5.30%
  • William Blair Investment Management, LLC4.78%
  • Vanguard Capital Management, LLC3.46%
  • Morgan Stanley3.29%

By investor type

  • Mutual Fund48.19%
  • Hedge Fund26.34%
  • VC/PE Fund14.91%
  • Public Company11.56%
  • Private Company3.17%
  • Individual/Insider1.86%
  • Sovereign Wealth Fund0.92%
  • Government Pension Fund0.71%

Reported short interest has fallen from 20.01% to 19.73% 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 5,884,765 19.7% 12.1
31 Aug 2026 6,001,270 20.1% 12.4
14 Aug 2026 6,289,158 21.1% 6.4
31 Jul 2026 5,848,506 19.7% 8.6
15 Jul 2026 5,830,669 19.6% 8.4
30 Jun 2026 5,940,039 20.0% 5.9

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