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Six Flags Entertainment Corporation/NEW
$19.38 +0.57 (+3.03%) At close · Jul 15
Market Cap
$1.97B
Shares
102,203,942

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 301
Total Value: $2,002,314,304
Total Shares: 112,736,061
Showing 1–100 of 315 holdings by value · page 1 of 4

Institutional Ownership Trend

9 quarters

Holder Concentration

Across 299 13F filers
Top Holder
13.5%
Jun 2024 → Mar 2026 · range 12.9% – 38.2%
of institutional value
Top 5
39.1%
Jun 2024 → Mar 2026 · range 38.2% – 98.2%
of institutional value
Top 10
58.3%
Jun 2024 → Mar 2026 · range 52.3% – 99.9%
of institutional value
HHI
477
Jun 2024 → Mar 2026 · range 444 – 2,662
Broadly held
Showing 100 of 315
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1999001 CUSIP 83001C108 13F (30d) 19 filings 19 filers Visit website Investor relations