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HowShorted

How shorted is System1, Inc.? SST

#2,231most shorted US stockof 3,805 ranked stocks, more shorted than 41%

3.56%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+1.69
5 reports (~10 weeks)
+1.47
days to cover
1.00
Aggregate net short position time series for System1, Inc.

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 System1, Inc. 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
5 Aug 20261.59% 31 Jul 20261.10% 14 Aug 2026−0.49
12 May 20266.55% 30 Apr 20264.32% 15 May 2026−2.23
11 Mar 20262.08% 27 Feb 20262.60% 13 Mar 2026+0.52
5 Nov 20251.94% 31 Oct 20251.69% 14 Nov 2025−0.25
6 May 20251.70% 30 Apr 20251.80% 15 May 2025+0.10
10 Mar 20252.23% 28 Feb 20252.07% 14 Mar 2025−0.16
7 Nov 20241.75% 31 Oct 20241.73% 15 Nov 2024−0.02
8 Aug 20241.38% 31 Jul 20241.37% 15 Aug 2024−0.01

Fails to deliver

The SEC's fails-to-deliver figure for SST: 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
16,937
10 Sep 2026
Highest in window
860,139
30 Mar 2026
Days with a balance
138
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for System1, Inc. 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 860K shares.

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Sector: Technology

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20263.56%+1.69
31 Aug 20261.87%+0.77
14 Aug 20261.10%−0.49
31 Jul 20261.59%−0.09
15 Jul 20261.68%−0.41
30 Jun 20262.09%−0.08
15 Jun 20262.17%−0.39
29 May 20262.56%−1.76
15 May 20264.32%−2.23
30 Apr 20266.55%+1.59
15 Apr 20264.96%+2.36
13 Mar 20262.60%+0.52
27 Feb 20262.08%+0.16
13 Feb 20261.92%+0.01
30 Jan 20261.91%−0.03
15 Jan 20261.94%+0.01
31 Dec 20251.93%−0.03
15 Dec 20251.96%+0.17
28 Nov 20251.79%+0.10
14 Nov 20251.69%−0.25
31 Oct 20251.94%+0.06
15 Oct 20251.88%−0.19
30 Sep 20252.07%−0.14
15 Sep 20252.21%0.00
29 Aug 20252.21%+0.17
15 Aug 20252.04%+0.39
30 May 20251.65%−0.15
15 May 20251.80%+0.10
30 Apr 20251.70%−0.09
15 Apr 20251.79%−0.02
31 Mar 20251.81%−0.26
14 Mar 20252.07%−0.16
28 Feb 20252.23%−0.12
14 Feb 20252.35%−0.03
31 Jan 20252.38%+0.64
15 Jan 20251.74%+0.11
31 Dec 20241.63%+0.09
13 Dec 20241.54%−0.20
29 Nov 20241.74%+0.01
15 Nov 20241.73%−0.02
31 Oct 20241.75%−0.18
15 Oct 20241.93%0.00
30 Sep 20241.93%+0.07
13 Sep 20241.86%+0.07
30 Aug 20241.79%+0.42
15 Aug 20241.37%−0.01
31 Jul 20241.38%+0.14
15 Jul 20241.24%+0.16
28 Jun 20241.08%−0.45
14 Jun 20241.53%−0.02
31 May 20241.55%−0.13
15 May 20241.68%−0.08
30 Apr 20241.76%+0.41
15 Apr 20241.35%+0.40
28 Mar 20240.95%−0.01
15 Mar 20240.96%+0.22
29 Feb 20240.74%−0.09
15 Feb 20240.83%−0.02
31 Jan 20240.85%+0.01
12 Jan 20240.84%+0.03
29 Dec 20230.81%−0.08
15 Dec 20230.89%+0.11
30 Nov 20230.78%+0.02
15 Nov 20230.76%+0.03
31 Oct 20230.73%−0.13
13 Oct 20230.86%−0.04
29 Sep 20230.90%+0.02
15 Sep 20230.88%+0.01
31 Aug 20230.87%+0.12
15 Aug 20230.75%+0.02
31 Jul 20230.73%−0.14
14 Jul 20230.87%−0.03
30 Jun 20230.90%+0.55
15 Jun 20230.35%−0.05
31 May 20230.40%−0.07
15 May 20230.47%−0.20
28 Apr 20230.67%−0.01
14 Apr 20230.68%−0.07
31 Mar 20230.75%+0.06
15 Mar 20230.69%+0.02
28 Feb 20230.67%+0.02
15 Feb 20230.65%−0.11
31 Jan 20230.76%+0.10
13 Jan 20230.66%−0.11
30 Dec 20220.77%−0.02
15 Dec 20220.79%+0.07
30 Nov 20220.72%−0.01
15 Nov 20220.73%+0.01
31 Oct 20220.72%−0.02
14 Oct 20220.74%−0.11
30 Sep 20220.85%−0.97
15 Sep 20221.82%−1.08
31 Aug 20222.90%+1.58
15 Aug 20221.32%−0.27
29 Jul 20221.59%−0.20
15 Jul 20221.79%−0.03
30 Jun 20221.82%−0.14
15 Jun 20221.96%−1.86
31 May 20223.82%−0.21
13 May 20224.03%−0.70
29 Apr 20224.73%−0.23
14 Apr 20224.96%+2.57
31 Mar 20222.39%−1.06
15 Mar 20223.45%–

Newest first. Scroll inside the table for earlier dates, back to 15 Mar 2022.

Frequently asked questions

How shorted is System1, Inc. right now?
3.56% of System1, Inc.'s (SST) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 2,231st 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 SST'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 SST's days to cover?
1.00 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.