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Six Flags Entertainment FUN

US equityMarket cap rank #3096
$12.13 +$0.53 (+4.57%)
Pre-market · Oct 6, 4:10 am ET · After hours $12.15 +0.16%
Open$11.60
Prev close$11.60
Day range$11.13 – $12.27
Volume3.15M
Market cap$1.24B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership107.4%-0.01 pts vs. prior quarter
Institutions holding360+0 vs. prior quarter
Insider trades (recent)32 buys / 12 sellsNet buying
Short interest20.90% of floatDays to cover 9.9 · as of 15 Sep 2026
Short-sale volume share21.1%5-day average of daily volume

Short-sale volume as % of daily volume

9%17%25%33%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$11.65M (8 inflow days, 12 outflow days).

The five largest holders on file together own 38.8% of shares outstanding.

Largest holders

  • BlackRock15.56%
  • Darlington Partners Capital Management, LP7.53%
  • Morgan Stanley5.51%
  • Vanguard Portfolio Management, LLC5.31%
  • Sachem Head Capital Management LP4.92%
  • Vanguard Capital Management, LLC4.87%
  • Dendur Capital LP4.84%
  • Rehan Jaffer4.79%

By investor type

  • Mutual Fund50.42%
  • Hedge Fund41.12%
  • Public Company9.71%
  • Individual/Insider7.74%
  • Government Pension Fund3.44%
  • Sovereign Wealth Fund1.18%
  • Private Company1.18%
  • Family Office/Trust0.13%

Reported short interest has risen from 18.78% to 20.90% 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 21,388,056 20.9% 9.9
31 Aug 2026 19,590,521 19.1% 12.0
14 Aug 2026 18,487,998 18.1% 6.2
31 Jul 2026 19,297,605 18.9% 10.1
15 Jul 2026 18,591,079 18.2% 8.0
30 Jun 2026 19,189,202 18.8% 7.2

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