Institutional Ownership
Six Flags Entertainment Corp
CUSIP 83001C108COMFUNQ1 2026
13D / 13G Filings
9
Schedule 13D/13G on record
Beneficial Filers
5
Distinct reporting persons
Largest Stake
10.0%
Max % of class reported
Institutional Holders
286
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
9 filings · latest Feb 13, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 13, 2026 | Darlington Partners Capital Management, LP | 13G/A | 5.1% | 5.20M | SEC |
| 2 | Feb 12, 2026 | Morgan Stanley | 13G/A | 9.1% | 9.20M | SEC |
| 3 | Nov 7, 2025 | Morgan Stanley | 13G | 5.6% | 5.70M | SEC |
| 4 | Aug 14, 2025 | Darlington Partners Capital Management, LP | 13G/A | 8.6% | 8.70M | SEC |
| 5 | May 15, 2025 | Darlington Partners Capital Management, LP | 13G/A | 7.2% | 7.24M | SEC |
| 6 | Apr 14, 2025 | Rehan Jaffer | 13D/A | 5.0% | — | SEC |
| 7 | Mar 11, 2025 | Darlington Partners Capital Management, LP | 13G | 5.9% | 5.91M | SEC |
| 8 | Jan 8, 2025 | The Vanguard Group | 13G/A | 10.0% | 10.06M | SEC |
| 9 | Jul 3, 2024 | Jaffer Rehan | 13D | 6.6% | 6.61M | SEC |
Top Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 15.16M | $269.12M |
| 2 | Ubs Group AG | 9.11M | $161.79M |
| 3 | Darlington Partners Capital Management, LP | 8.70M | $154.43M |
| 4 | Morgan Stanley | 5.92M | $105.16M |
| 5 | Sachem Head Capital Management LP | 5.03M | $89.28M |
| 6 | Dendur Capital LP | 4.95M | $87.92M |
| 7 | H Partners Management, LLC | 4.65M | $82.54M |
| 8 | Jana Partners Management, LP | 4.12M | $73.06M |
| 9 | State Street Corp | 3.68M | $65.36M |
| 10 | Ameriprise Financial Inc | 3.40M | $60.37M |