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HowShorted

How shorted is Century Therapeutics, Inc.? IPSC

#246most shorted US stockof 3,805 ranked stocks, more shorted than 93%

16.21%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.10
5 reports (~10 weeks)
+3.20
days to cover
78.64
Aggregate net short position time series for Century Therapeutics, 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 Century Therapeutics, 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
12 Aug 202616.53% 31 Jul 202616.22% 14 Aug 2026−0.31
14 Aug 20251.55% 31 Jul 20251.69% 15 Aug 2025+0.14
15 May 20253.23% 30 Apr 20252.80% 30 May 2025−0.43
19 Mar 20253.97% 14 Mar 20253.68% 31 Mar 2025−0.29
13 Jan 20253.63% 31 Dec 20243.56% 15 Jan 2025−0.07
5 Nov 20244.16% 31 Oct 20242.66% 15 Nov 2024−1.50
8 Aug 20242.60% 31 Jul 20242.64% 15 Aug 2024+0.04
9 May 20242.60% 30 Apr 20241.89% 15 May 2024−0.71

Fails to deliver

The SEC's fails-to-deliver figure for IPSC: 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.

Latest balance
17,147
14 Sep 2026
Highest in window
438,766
8 Jun 2026
Days with a balance
71
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Century Therapeutics, 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 439K shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202616.21%−0.10
31 Aug 202616.31%+0.09
14 Aug 202616.22%−0.31
31 Jul 202616.53%+0.79
15 Jul 202615.74%+2.73
30 Jun 202613.01%+4.47
15 Jun 20268.54%+1.63
29 May 20266.91%+0.14
15 May 20266.77%+5.85
15 Jan 20260.92%+0.55
31 Dec 20250.37%+0.09
15 Dec 20250.28%−0.42
28 Nov 20250.70%+0.13
14 Nov 20250.57%−1.04
30 Sep 20251.61%−0.09
15 Sep 20251.70%−0.10
29 Aug 20251.80%+0.11
15 Aug 20251.69%+0.14
31 Jul 20251.55%−0.07
15 Jul 20251.62%−0.11
30 Jun 20251.73%−0.96
13 Jun 20252.69%−0.11
30 May 20252.80%−0.17
15 May 20252.97%−0.26
30 Apr 20253.23%−0.88
15 Apr 20254.11%+0.43
31 Mar 20253.68%−0.29
14 Mar 20253.97%−0.04
28 Feb 20254.01%+0.33
14 Feb 20253.68%+0.07
31 Jan 20253.61%+0.05
15 Jan 20253.56%−0.07
31 Dec 20243.63%+0.45
13 Dec 20243.18%−0.19
29 Nov 20243.37%+0.71
15 Nov 20242.66%−1.50
31 Oct 20244.16%+0.23
15 Oct 20243.93%−0.19
30 Sep 20244.12%+0.25
13 Sep 20243.87%+0.53
30 Aug 20243.34%+0.70
15 Aug 20242.64%+0.04
31 Jul 20242.60%−0.86
15 Jul 20243.46%+1.30
28 Jun 20242.16%+0.27
14 Jun 20241.89%−0.05
31 May 20241.94%+0.05
15 May 20241.89%−0.71
30 Apr 20242.60%−0.29
15 Apr 20242.89%+0.13
28 Mar 20242.76%+0.02
15 Mar 20242.74%−0.19
29 Feb 20242.93%−0.09
15 Feb 20243.02%+1.61
31 Jan 20241.41%+0.08
12 Jan 20241.33%−0.19
29 Dec 20231.52%+0.03
15 Dec 20231.49%−0.05
30 Nov 20231.54%+0.30
15 Nov 20231.24%−0.17
31 Oct 20231.41%+0.23
13 Oct 20231.18%+0.04
29 Sep 20231.14%+0.01
15 Sep 20231.13%+0.06
31 Aug 20231.07%−0.18
15 Aug 20231.25%−0.19
31 Jul 20231.44%+0.03
14 Jul 20231.41%−0.41
30 Jun 20231.82%−0.44
15 Jun 20232.26%+0.08
31 May 20232.18%−0.28
15 May 20232.46%−0.05
28 Apr 20232.51%−0.08
14 Apr 20232.59%−0.02
31 Mar 20232.61%−0.06
15 Mar 20232.67%−0.93
28 Feb 20233.60%−0.28
15 Feb 20233.88%0.00
31 Jan 20233.88%−0.12
13 Jan 20234.00%+0.08
30 Dec 20223.92%+0.26
15 Dec 20223.66%+0.06
30 Nov 20223.60%−0.18
15 Nov 20223.78%+0.08
31 Oct 20223.70%−0.07
14 Oct 20223.77%−0.02
30 Sep 20223.79%+0.22
15 Sep 20223.57%−0.09
31 Aug 20223.66%0.00
15 Aug 20223.66%−1.19
29 Jul 20224.85%−0.40
15 Jul 20225.25%−0.33
30 Jun 20225.58%+0.02
15 Jun 20225.56%+0.32
31 May 20225.24%+0.01
13 May 20225.23%−0.13
29 Apr 20225.36%+0.04
14 Apr 20225.32%+0.06
31 Mar 20225.26%−0.08
15 Mar 20225.34%+0.23
28 Feb 20225.11%+0.34
15 Feb 20224.77%+0.06
31 Jan 20224.71%+0.33
14 Jan 20224.38%+0.34
31 Dec 20214.04%+0.20
15 Dec 20213.84%+0.70
30 Nov 20213.14%+0.04
15 Nov 20213.10%+0.04
29 Oct 20213.06%+0.02
15 Oct 20213.04%+0.40
30 Sep 20212.64%−0.29
15 Sep 20212.93%−0.20
31 Aug 20213.13%+0.51
13 Aug 20212.62%–

Newest first. Scroll inside the table for earlier dates, back to 13 Aug 2021.

Frequently asked questions

How shorted is Century Therapeutics, Inc. right now?
16.21% of Century Therapeutics, Inc.'s (IPSC) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 246th 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 IPSC'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 IPSC's days to cover?
78.64 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.