Six Flags Entertainment Corporation
Institutional managers reporting a position on Form 13F-HR, as of Mar 31, 2026
1Largest holdersEvery position of a manager summed
- 1BlackRock, Inc.$269.12M13.0%
- 2UBS Group AG$161.79M7.8%
- 3DARLINGTON PARTNERS CAPITAL MANAGEMENT, LP$154.43M7.5%
- $105.16M5.1%
- 5VANGUARD PORTFOLIO MANAGEMENT LLC$91.25M4.4%
- 6Sachem Head Capital Management LP$89.28M4.3%
- 7DENDUR CAPITAL LP$87.92M4.3%
- 8H PARTNERS MANAGEMENT, LLC$82.54M4.0%
- 9VANGUARD CAPITAL MANAGEMENT LLC$74.68M3.6%
- 10JANA Partners Management, LP$73.06M3.5%
2HoldersChange from Dec 31, 2025
| Holder | Quantity | Change | Value | Share | Filed |
|---|---|---|---|---|---|
| BlackRock, Inc.Common shares | 15.2M | −217.1K−1.4% | $269.12M | 13.03% | May 13, 2026 |
| UBS Group AGCommon shares | 9.1M | +3.8M+72.6% | $161.79M | 7.83% | May 5, 2026 |
| DARLINGTON PARTNERS CAPITAL MANAGEMENT, LPCommon shares | 8.7M | +3.5M+67.3% | $154.43M | 7.47% | May 15, 2026 |
| MORGAN STANLEYCommon shares | 5.9M | −3.5M−37.5% | $105.16M | 5.09% | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLCCommon shares | 5.1M | New | $91.25M | 4.42% | May 8, 2026 |
| Sachem Head Capital Management LPCommon shares | 5M | No change | $89.28M | 4.32% | May 15, 2026 |
| DENDUR CAPITAL LPCommon shares | 5M | No change | $87.92M | 4.26% | May 15, 2026 |
| H PARTNERS MANAGEMENT, LLCCommon shares | 4.7M | No change | $82.54M | 4.00% | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLCCommon shares · Amendment 1 (restatement) | 4.2M | New | $74.68M | 3.61% | May 15, 2026 |
| JANA Partners Management, LPCommon shares | 4.1M | No change | $73.06M | 3.54% | May 15, 2026 |
| STATE STREET CORPCommon shares | 3.7M | +68,329+1.9% | $65.36M | 3.16% | May 15, 2026 |
| AMERIPRISE FINANCIAL INCCommon shares | 3.4M | +1.9M+127.3% | $60.37M | 2.92% | May 15, 2026 |
| GOLDMAN SACHS GROUP INCCommon shares | 3M | +1M+50.9% | $52.9M | 2.56% | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLCCommon shares | 2.4M | +48,065+2.1% | $41.89M | 2.03% | May 15, 2026 |
| GLENVIEW CAPITAL MANAGEMENT, LLCCommon shares | 2.2M | +1.1M+98.1% | $39.46M | 1.91% | May 15, 2026 |
| CITADEL ADVISORS LLCCommon shares | 1.7M | New | $30.91M | 1.50% | May 15, 2026 |
| MARSHALL WACE, LLPCommon shares | 1.5M | +1.3M+482.2% | $27.02M | 1.31% | May 15, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCCommon shares | 1.5M | +329.2K+28.6% | $26.25M | 1.27% | May 15, 2026 |
| Invenomic Capital Management LPCommon shares | 1.4M | −10,450−0.7% | $25.31M | 1.23% | May 15, 2026 |
| HAWK RIDGE CAPITAL MANAGEMENT LPCommon shares | 1.4M | −171.1K−11.1% | $24.29M | 1.18% | May 15, 2026 |
| Chescapmanager LLCCommon shares | 1.1M | No change | $19.9M | 0.96% | May 14, 2026 |
| ING GROEP NVCommon shares | 1M | No change | $18.57M | 0.90% | May 11, 2026 |
| NORTHERN TRUST CORPCommon shares | 1M | +85,372+9.1% | $18.19M | 0.88% | May 14, 2026 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUNDCommon shares | 1M | −1.4M−57.3% | $18.1M | 0.88% | May 14, 2026 |
| RUSH ISLAND MANAGEMENT, LPCommon shares | 927.8K | −253.4K−21.5% | $16.47M | 0.80% | May 15, 2026 |
3Report periods
| Report date | Filings | Holdings | Combined value | Latest filed | |
|---|---|---|---|---|---|
| Mar 31, 2026 | 299 | 313 | $2.07B | May 18, 2026 | |
| Dec 31, 2025 | 315 | 340 | $1.74B | May 27, 2026 | |
| Sep 30, 2025 | 314 | 337 | $2.65B | May 27, 2026 | |
| Jun 30, 2025 | 338 | 350 | $3.09B | May 15, 2026 | |
| Mar 31, 2025 | 10 | 10 | $50.13M | May 19, 2026 |
Filings for a quarter keep arriving for months after it ends, so the most recent and the earliest periods can be incomplete.
4About this data
Each row is one manager's position as disclosed in one Form 13F-HR filing; managers below the Form 13F reporting threshold do not appear. Values, quantities and manager names are as reported in each filing. A row totals the entries of one filing that share a security class and option type; a value or quantity is shown as not comparable when those entries differ in currency or unit. A restatement replaces the original filing and every earlier amendment for the same period; an amendment adding new holdings is listed alongside the filing it supplements and labelled as such. Positions are matched to this listing through the security identifiers reported in the filing.