Six Flags Entertainment Corporation
FUN- Exchange
- NYSE
- Industry
- Services-Amusement & Recreation Services
- SEC CIK
- 0001999001
In the last 90 days, Six Flags Entertainment Corporation insiders filed 1 open-market purchase and 0 sales; 313 institutions reported holding it in 13F filings for Q2 2026, worth $2.32B in total; no superinvestor holds it.
Holders of 5% or more of FUN
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Six Flags Entertainment Corporation, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Morgan Stanley | 13G/A | 9.10%9.20M shares | +3.50 ppfrom 5.60% | Nov 7, 20252 filings | Feb 12, 2026 | SEC |
| Darlington Partners Capital Management, LP | 13G/A | 5.10%5.20M shares | −3.50 ppfrom 8.60% | Mar 11, 20254 filings | Feb 13, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
9 Schedule 13D and 13G filings on Six Flags Entertainment Corporation, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 27, 20261:01 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −10.03 ppfrom 10.03%Below 5% | Mar 13, 2026 | SEC |
| Feb 13, 20262:37 PM ET | Darlington Partners Capital Management, LPand 4 others | 13G/A | 5.10%5.20M shares | −3.50 ppfrom 8.60% | Dec 31, 2025 | SEC |
| Feb 12, 202612:25 PM ET | Morgan Stanleyand 1 other | 13G/A | 9.10%9.20M shares | +3.50 ppfrom 5.60% | Dec 31, 2025 | SEC |
| Nov 7, 202511:56 AM ET | Morgan Stanleyand 1 other | 13G | 5.60%5.70M shares | New | Sep 30, 2025 | SEC |
| Aug 14, 20251:34 PM ET | Darlington Partners Capital Management, LPand 4 others | 13G/A | 8.60%8.70M shares | +1.40 ppfrom 7.20% | Jun 30, 2025 | SEC |
| May 15, 20251:07 PM ET | Darlington Partners Capital Management, LPand 4 others | 13G/A | 7.20%7.24M shares | +1.30 ppfrom 5.90% | Mar 31, 2025 | SEC |
| Apr 14, 20256:05 AM ET | Jaffer Rehanand 1 other | 13D/A | 4.98%5.00M shares | –Below 5% | Apr 3, 2025 | SEC |
| Mar 11, 20254:06 PM ET | Darlington Partners Capital Management, LPand 4 others | 13G | 5.90%5.91M shares | New | Mar 4, 2025 | SEC |
| Jan 8, 202511:29 AM ET | Vanguard Group Inc | 13G/A | 10.03%10.1M shares | – | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Six Flags Entertainment Corporation shares.
No Form 144 notices for Six Flags Entertainment Corporation are on file.