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Accelerant Holdings ARX

US equityMarket cap rank #2229
$19.73 +$0.00 (0.00%)
Market closed · Oct 5, 10:20 pm ET · Last extended-hours $19.73 0.00%
Open$19.73
Prev close$19.73
Day range$19.72 – $19.75
Volume1.45M
Market cap$4.29B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership77.4%+2.55 pts vs. prior quarter
Institutions holding147+1 vs. prior quarter
Insider trades (recent)21 buys / 27 sellsNet selling
Short interest2.20% of floatDays to cover 3.9 · as of 15 Sep 2026
Short-sale volume share11.3%5-day average of daily volume

Short-sale volume as % of daily volume

4%11%18%26%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$165.59M (6 inflow days, 14 outflow days).

The five largest holders on file together own 68.2% of shares outstanding.

Largest holders

  • ACP Insurance Management, LLC38.07%
  • Jeffrey Radke12.83%
  • Christopher Lee-Smith8.13%
  • Eldridge Industries LLC5.40%
  • Altamont Capital Management, LP3.79%
  • Francis O’Neill2.95%
  • Glazer Capital, LLC2.75%
  • FMR2.59%

By investor type

  • Private Company38.87%
  • Individual/Insider25.59%
  • Mutual Fund19.12%
  • Hedge Fund9.41%
  • VC/PE Fund9.20%
  • Public Company0.72%
  • Government Pension Fund0.08%
  • Sovereign Wealth Fund0.01%

Reported short interest has fallen from 3.14% to 2.20% 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 4,779,026 2.2% 3.9
31 Aug 2026 5,177,939 2.4% 1.4
14 Aug 2026 5,839,853 2.7% 1.0
31 Jul 2026 6,013,471 2.8% 2.1
15 Jul 2026 6,767,480 3.1% 3.7
30 Jun 2026 6,849,378 3.1% 2.4

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