Six Flags Entertainment Corporation
US ˙ NYSE

SecurityFUN / Six Flags Entertainment Corporation
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership1,741,478 shares
Latest Disclosed Value $ 30,911,235
Citadel Advisors Llc ownership in FUN / Six Flags Entertainment Corporation

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 1,741,478 shares of Six Flags Entertainment Corporation (US:FUN) valued at $30,911,234 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Six Flags Entertainment Corporation. The current value of the position is $36,083,424 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (FUN) in the form of stock options. The firm currently holds call options representing 75,200 of underlying shares valued at $1,334,800 USD and put options representing 379,200 of underlying shares valued at $6,730,800 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

FUN / Six Flags Entertainment Corporation Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F SIX FLAGS ENTERTAINMENT COM 83001C108 1,741,478 1,741,478 30,911 0.0044
2026-02-17 2025-12-31 13F SIX FLAGS ENTERTAINMENT COM 83001C108 0 -100.00 0
2025-11-14 2025-09-30 13F SIX FLAGS ENTERTAINMENT COM 83001C108 2,044,975 2,044,975 46,462 0.0071
2025-08-14 2025-06-30 13F SIX FLAGS ENTERTAINMENT COM 83001C108 0 -2,259,321 -100.00 0 -100.00
2025-05-15 2025-03-31 13F SIX FLAGS ENTERTAINMENT COM 83001C108 2,259,321 1,042,638 85.70 80,590 37.45 0.0153
2025-02-14 2024-12-31 13F SIX FLAGS ENTERTAINMENT COM 83001C108 1,216,683 776,986 176.71 58,632 230.80 0.0101
2024-11-14 2024-09-30 13F SIX FLAGS ENTERTAINMENT COM 83001C108 439,697 439,697 17,724 0.0034
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F SIX FLAGS ENTERTAINMENT COM Call 75,200 -67.79 1,335 -62.75 n/a n/a n/a
2026-02-17 2025-12-31 13F SIX FLAGS ENTERTAINMENT COM Call 233,494 -25.32 3,582 -49.58 n/a n/a n/a
2025-11-14 2025-09-30 13F SIX FLAGS ENTERTAINMENT COM Call 312,640 47.21 7,103 9.92 n/a n/a n/a
2025-08-14 2025-06-30 13F SIX FLAGS ENTERTAINMENT COM Call 212,370 53.98 6,462 31.37 n/a n/a n/a
2025-05-15 2025-03-31 13F SIX FLAGS ENTERTAINMENT COM Call 137,922 79.58 4,920 32.91 n/a n/a n/a
2025-02-14 2024-12-31 13F SIX FLAGS ENTERTAINMENT COM Call 76,802 -18.99 3,701 -3.14 n/a n/a n/a
2024-11-14 2024-09-30 13F SIX FLAGS ENTERTAINMENT COM Call 94,802 582.03 3,821 375.25 n/a n/a n/a
2017-01-31 2016-06-30 13F/A CEDAR FAIR L P Cmn Call 13,900 10.32 804 7.34 n/a n/a n/a
2016-08-12 2016-06-30 13F CEDAR FAIR -LP CMN STK Cmn Call 13,900 804 n/a n/a n/a
2017-01-31 2016-03-31 13F/A CEDAR FAIR L P Cmn Call 12,600 82.61 749 94.55 n/a n/a n/a
2016-05-13 2016-03-31 13F CEDAR FAIR -LP CMN STK Cmn Call 12,600 749 n/a n/a n/a
2017-01-31 2015-12-31 13F/A CEDAR FAIR L P Cmn Call 6,900 18.97 385 26.23 n/a n/a n/a
2016-02-12 2015-12-31 13F CEDAR FAIR - Cmn Call 6,900 385 n/a n/a n/a
2015-11-16 2015-09-30 13F CEDAR FAIR -LP CMN STK Cmn Call 5,800 16.00 305 12.13 n/a n/a n/a
2015-08-14 2015-06-30 13F CEDAR FAIR -LP CMN STK Cmn Call 5,000 233.33 272 216.28 n/a n/a n/a
2015-05-15 2015-03-31 13F CEDAR FAIR -LP CMN STK Cmn Call 1,500 -83.87 86 -80.67 n/a n/a n/a
2015-02-17 2014-12-31 13F CEDAR FAIR -LP CMN STK Cmn Call 9,300 445 n/a n/a n/a
2014-11-14 2014-09-30 13F CEDAR FAIR -LP CMN STK Cmn Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-08-14 2014-06-30 13F CEDAR FAIR -LP CMN STK Cmn Call 900 -87.67 48 -86.74 n/a n/a n/a
2014-02-14 2013-12-31 13F CEDAR FAIR - Cmn Call 7,300 46.00 362 66.06 n/a n/a n/a
2013-11-14 2013-09-30 13F CEDAR FAIR -LP CMN STK Cmn Call 5,000 -59.35 218 -57.17 n/a n/a n/a
2013-08-14 2013-06-30 13F CEDAR FAIR - Cmn Call 12,300 509 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F SIX FLAGS ENTERTAINMENT COM Put 379,200 -28.07 6,731 -16.77 n/a n/a n/a
2026-02-17 2025-12-31 13F SIX FLAGS ENTERTAINMENT COM Put 527,144 132.74 8,086 57.16 n/a n/a n/a
2025-11-14 2025-09-30 13F SIX FLAGS ENTERTAINMENT COM Put 226,490 329.30 5,146 220.56 n/a n/a n/a
2025-08-14 2025-06-30 13F SIX FLAGS ENTERTAINMENT COM Put 52,758 196.13 1,605 152.76 n/a n/a n/a
2025-05-15 2025-03-31 13F SIX FLAGS ENTERTAINMENT COM Put 17,816 -32.67 635 -50.20 n/a n/a n/a
2025-02-14 2024-12-31 13F SIX FLAGS ENTERTAINMENT COM Put 26,460 -3.56 1,275 15.38 n/a n/a n/a
2024-11-14 2024-09-30 13F SIX FLAGS ENTERTAINMENT COM Put 27,436 365.02 1,106 224.05 n/a n/a n/a
2017-01-31 2016-06-30 13F/A CEDAR FAIR L P Cmn Put 5,900 -29.76 341 -31.66 n/a n/a n/a
2016-08-12 2016-06-30 13F CEDAR FAIR -LP CMN STK Cmn Put 5,900 341 n/a n/a n/a
2017-01-31 2016-03-31 13F/A CEDAR FAIR L P Cmn Put 8,400 31.25 499 39.78 n/a n/a n/a
2016-05-13 2016-03-31 13F CEDAR FAIR -LP CMN STK Cmn Put 8,400 499 n/a n/a n/a
2017-01-31 2015-12-31 13F/A CEDAR FAIR L P Cmn Put 6,400 -3.03 357 2.88 n/a n/a n/a
2016-02-12 2015-12-31 13F CEDAR FAIR - Cmn Put 6,400 357 n/a n/a n/a
2015-11-16 2015-09-30 13F CEDAR FAIR -LP CMN STK Cmn Put 6,600 4.76 347 1.17 n/a n/a n/a
2015-08-14 2015-06-30 13F CEDAR FAIR -LP CMN STK Cmn Put 6,300 31.25 343 24.28 n/a n/a n/a
2015-05-15 2015-03-31 13F CEDAR FAIR -LP CMN STK Cmn Put 4,800 26.32 276 51.65 n/a n/a n/a
2015-02-17 2014-12-31 13F CEDAR FAIR -LP CMN STK Cmn Put 3,800 -78.89 182 -78.61 n/a n/a n/a
2014-11-14 2014-09-30 13F CEDAR FAIR -LP CMN STK Cmn Put 18,000 168.66 851 140.40 n/a n/a n/a
2014-08-14 2014-06-30 13F CEDAR FAIR -LP CMN STK Cmn Put 6,700 28.85 354 33.58 n/a n/a n/a
2014-05-15 2014-03-31 13F CEDAR FAIR -LP CMN STK Cmn Put 5,200 160.00 265 167.68 n/a n/a n/a
2014-02-14 2013-12-31 13F CEDAR FAIR - Cmn Put 2,000 -31.03 99 -21.43 n/a n/a n/a
2013-11-14 2013-09-30 13F CEDAR FAIR -LP CMN STK Cmn Put 2,900 -3.33 126 1.61 n/a n/a n/a
2013-08-14 2013-06-30 13F CEDAR FAIR - Cmn Put 3,000 124 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.