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HowShorted

How shorted is Six Flags Entertainment Corporation? FUN

#102most shorted US stockof 3,805 ranked stocks, more shorted than 97%

The ticker FUN previously referred to Cedar Fair, L.P. (to 2024).

20.90%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+1.75
5 reports (~10 weeks)
+2.12
days to cover
9.85
Aggregate net short position time series for Six Flags Entertainment Corporation

Markers along the chart's base: ▲ results announced (an 8-K reporting results was filed) ▲ quarterly or annual report filed. Dates are SEC filing dates; hover a point to see events since the previous settlement.

Days to cover

FINRA's own figure: reported shares short divided by the stock's average daily trading volume, published alongside each settlement. It expresses the short position in days of typical trading rather than as a percentage of the company; the two can move differently.

Aggregate net short position time series for Six Flags Entertainment Corporation days to cover

Short interest around results

For each results announcement (an 8-K reporting results, by its SEC filing date), the FINRA settlement before it and the first one after. Settlements fall twice a month, so the two figures can sit up to a month apart and much else changes in between: this shows what was reported, not why.

Reported short interest before and after each results announcement
Results filedSettlement beforeSettlement afterChange
6 Aug 202618.86% 31 Jul 202618.07% 14 Aug 2026−0.79
7 May 202618.53% 30 Apr 202616.97% 15 May 2026−1.56
19 Feb 202622.22% 13 Feb 202620.83% 27 Feb 2026−1.39
7 Nov 202517.23% 31 Oct 202517.08% 14 Nov 2025−0.15
6 Aug 202516.86% 31 Jul 202519.49% 15 Aug 2025+2.63
8 May 202510.65% 30 Apr 202510.90% 15 May 2025+0.25
27 Feb 20256.91% 14 Feb 20256.47% 28 Feb 2025−0.44
6 Nov 20248.95% 31 Oct 20249.62% 15 Nov 2024+0.67

Fails to deliver

The SEC's fails-to-deliver figure for FUN: the aggregate net balance of shares that failed to be delivered at each settlement date, published by the SEC twice a month and shown here verbatim for the trailing window. A balance is not a daily flow, and a fail has many ordinary causes; the SEC says it cannot guarantee the accuracy of the data. See what fails to deliver are and the largest balances today.

Last balance on file
39,032
11 Sep 2026
Highest in window
1,387,174
30 Jun 2026
Days with a balance
69
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Six Flags Entertainment Corporation fails to deliver

Source: U.S. Securities and Exchange Commission, fails-to-deliver data (public domain). Only settlement days with a positive balance appear; the largest balance in the window was 1.4M shares.

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Sector: Media & telecom · By year: 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202620.90%+1.75
31 Aug 202619.15%+1.08
14 Aug 202618.07%−0.79
31 Jul 202618.86%+0.67
15 Jul 202618.19%−0.59
30 Jun 202618.78%+1.26
15 Jun 202617.52%+0.28
29 May 202617.24%+0.27
15 May 202616.97%−1.56
30 Apr 202618.53%−1.04
15 Apr 202619.57%−0.26
31 Mar 202619.83%+0.02
13 Mar 202619.81%−1.02
27 Feb 202620.83%−1.39
13 Feb 202622.22%−1.01
30 Jan 202623.23%+0.31
15 Jan 202622.92%+1.55
31 Dec 202521.37%+2.25
15 Dec 202519.12%−0.07
28 Nov 202519.19%+2.11
14 Nov 202517.08%−0.15
31 Oct 202517.23%−2.17
15 Oct 202519.40%−0.37
30 Sep 202519.77%+0.41
15 Sep 202519.36%−1.12
29 Aug 202520.48%+0.99
15 Aug 202519.49%+2.63
31 Jul 202516.86%+1.52
15 Jul 202515.34%+1.43
30 Jun 202513.91%+0.95
13 Jun 202512.96%+1.84
30 May 202511.12%+0.22
15 May 202510.90%+0.25
30 Apr 202510.65%+0.68
15 Apr 20259.97%+0.86
31 Mar 20259.11%+1.49
14 Mar 20257.62%+1.15
28 Feb 20256.47%−0.44
14 Feb 20256.91%+0.57
31 Jan 20256.34%−0.50
15 Jan 20256.84%−0.38
31 Dec 20247.22%+0.31
13 Dec 20246.91%−0.23
29 Nov 20247.14%−2.48
15 Nov 20249.62%+0.67
31 Oct 20248.95%−1.18
15 Oct 202410.13%−0.55
30 Sep 202410.68%+1.68
13 Sep 20249.00%−0.79
30 Aug 20249.79%+2.01
15 Aug 20247.78%–

Newest first. Scroll inside the table for earlier dates, back to 15 Aug 2024.

Frequently asked questions

How shorted is Six Flags Entertainment Corporation right now?
20.90% of Six Flags Entertainment Corporation's (FUN) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 102nd most shorted US stock, out of 3,805 we rank.
What does this number include?
FINRA member firms must report their short positions in all US equities twice a month; FINRA consolidates them per security. We divide that official share count by the company's shares outstanding from its SEC filings. This is the regulatory figure, not a daily estimate.
Why does it only update twice a month?
US short interest is reported for settlement on the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. That cadence is set by regulation; no daily official figure exists.
Is this FUN's short float?
No. This is short interest as a percentage of shares outstanding, the count in the company's SEC filings. "Short float" divides the same FINRA short count by the public float, which excludes closely held shares, so it comes out higher for the same company. We publish no float estimates: the float is not a regulatory figure.
What is FUN's days to cover?
9.85 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume. It is published in the same FINRA file and shown verbatim; we hold no volume data ourselves.
Which funds are short?
US public short interest is aggregate-only: individual short sellers are not named. Only some EU markets publish named positions.