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HowShorted

How shorted is COLLEGIUM PHARMACEUTICAL, INC? COLL

#196most shorted US stockof 3,805 ranked stocks, more shorted than 94%

17.43%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−1.20
5 reports (~10 weeks)
+0.58
days to cover
6.03
Aggregate net short position time series for COLLEGIUM PHARMACEUTICAL, 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 COLLEGIUM PHARMACEUTICAL, 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
6 Aug 202615.61% 31 Jul 202620.04% 14 Aug 2026+4.43
7 May 202618.30% 30 Apr 202618.39% 15 May 2026+0.09
26 Feb 202615.03% 13 Feb 202614.48% 27 Feb 2026−0.55
6 Nov 202517.01% 31 Oct 202517.97% 14 Nov 2025+0.96
7 Aug 202513.38% 31 Jul 202514.03% 15 Aug 2025+0.65
8 May 202514.18% 30 Apr 202515.79% 15 May 2025+1.61
27 Feb 202516.54% 14 Feb 202517.19% 28 Feb 2025+0.65
7 Nov 202419.25% 31 Oct 202419.49% 15 Nov 2024+0.24

Fails to deliver

The SEC's fails-to-deliver figure for COLL: 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
370
8 Sep 2026
Highest in window
20,196
1 Jun 2026
Days with a balance
38
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for COLLEGIUM PHARMACEUTICAL, 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 20K shares.

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Sector: Healthcare · By year: 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202617.43%−1.20
31 Aug 202618.63%−1.41
14 Aug 202620.04%+4.43
31 Jul 202615.61%−0.53
15 Jul 202616.14%−0.71
30 Jun 202616.85%+0.42
15 Jun 202616.43%−1.03
29 May 202617.46%−0.93
15 May 202618.39%+0.09
30 Apr 202618.30%−0.70
15 Apr 202619.00%+1.58
31 Mar 202617.42%+3.95
13 Mar 202613.47%−1.01
27 Feb 202614.48%−0.55
13 Feb 202615.03%−0.14
30 Jan 202615.17%−2.50
15 Jan 202617.67%+0.54
31 Dec 202517.13%+0.19
15 Dec 202516.94%−1.65
28 Nov 202518.59%+0.62
14 Nov 202517.97%+0.96
31 Oct 202517.01%+0.40
15 Oct 202516.61%+0.14
30 Sep 202516.47%+2.33
15 Sep 202514.14%+0.41
29 Aug 202513.73%−0.30
15 Aug 202514.03%+0.65
31 Jul 202513.38%+0.29
15 Jul 202513.09%−0.46
30 Jun 202513.55%−1.43
13 Jun 202514.98%−0.28
30 May 202515.26%−0.53
15 May 202515.79%+1.61
30 Apr 202514.18%−0.03
15 Apr 202514.21%−0.18
31 Mar 202514.39%−2.34
14 Mar 202516.73%−0.46
28 Feb 202517.19%+0.65
14 Feb 202516.54%−1.50
31 Jan 202518.04%+0.63
15 Jan 202517.41%−1.14
31 Dec 202418.55%−0.02
13 Dec 202418.57%−0.37
29 Nov 202418.94%−0.55
15 Nov 202419.49%+0.24
31 Oct 202419.25%+0.17
15 Oct 202419.08%+0.65
30 Sep 202418.43%−1.29
13 Sep 202419.72%+0.20
30 Aug 202419.52%+0.54
15 Aug 202418.98%−0.32
31 Jul 202419.30%−1.85
15 Jul 202421.15%−0.08
28 Jun 202421.23%+0.98
14 Jun 202420.25%−0.68
31 May 202420.93%−0.27
15 May 202421.20%+0.24
30 Apr 202420.96%−0.90
15 Apr 202421.86%−0.41
28 Mar 202422.27%+0.34
15 Mar 202421.93%+0.92
29 Feb 202421.01%−0.33
15 Feb 202421.34%+0.20
31 Jan 202421.14%+1.68
12 Jan 202419.46%−0.10
29 Dec 202319.56%−0.73
15 Dec 202320.29%+0.04
30 Nov 202320.25%−0.61
15 Nov 202320.86%+2.42
31 Oct 202318.44%−0.22
13 Oct 202318.66%+0.04
29 Sep 202318.62%−1.29
15 Sep 202319.91%−1.41
31 Aug 202321.32%−0.69
15 Aug 202322.01%+4.92
31 Jul 202317.09%−1.91
14 Jul 202319.00%−0.28
30 Jun 202319.28%+0.38
15 Jun 202318.90%+0.74
31 May 202318.16%−0.23
15 May 202318.39%+0.10
28 Apr 202318.29%+0.13
14 Apr 202318.16%+1.06
31 Mar 202317.10%+0.36
15 Mar 202316.74%+0.69
28 Feb 202316.05%+2.22
15 Feb 202313.83%+2.26
31 Jan 202311.57%−0.25
13 Jan 202311.82%+0.91
30 Dec 202210.91%+0.22
15 Dec 202210.69%−0.51
30 Nov 202211.20%−0.51
15 Nov 202211.71%+0.28
31 Oct 202211.43%+0.01
14 Oct 202211.42%+0.27
30 Sep 202211.15%+0.35
15 Sep 202210.80%+0.20
31 Aug 202210.60%−0.20
15 Aug 202210.80%+0.31
29 Jul 202210.49%+0.12
15 Jul 202210.37%−0.25
30 Jun 202210.62%−0.29
15 Jun 202210.91%+0.73
31 May 202210.18%+0.41
13 May 20229.77%−0.19
29 Apr 20229.96%−0.08
14 Apr 202210.04%−0.20
31 Mar 202210.24%−0.03
15 Mar 202210.27%−0.57
28 Feb 202210.84%+0.46
15 Feb 202210.38%+0.47
31 Jan 20229.91%+0.10
14 Jan 20229.81%−0.21
31 Dec 202110.02%−0.61
15 Dec 202110.63%−1.92
30 Nov 202112.55%−1.34
15 Nov 202113.89%+3.08
29 Oct 202110.81%+0.27
15 Oct 202110.54%+0.10
30 Sep 202110.44%+0.26
15 Sep 202110.18%+0.65
31 Aug 20219.53%−0.66
13 Aug 202110.19%−1.50
30 Jul 202111.69%−0.40
15 Jul 202112.09%+0.21
30 Jun 202111.88%−0.40
15 Jun 202112.28%+0.80
28 May 202111.48%−0.35
14 May 202111.83%−0.49
30 Apr 202112.32%−0.09
15 Apr 202112.41%+0.18
31 Mar 202112.23%−0.01
15 Mar 202112.24%−0.81
26 Feb 202113.05%+1.07
12 Feb 202111.98%−0.30
29 Jan 202112.28%+0.32
15 Jan 202111.96%+0.71
31 Dec 202011.25%−0.09
15 Dec 202011.34%−0.33
30 Nov 202011.67%−2.04
13 Nov 202013.71%+1.42
30 Oct 202012.29%−0.56
15 Oct 202012.85%+0.17
30 Sep 202012.68%+0.45
15 Sep 202012.23%+0.34
31 Aug 202011.89%+0.38
14 Aug 202011.51%−0.59
31 Jul 202012.10%−0.57
15 Jul 202012.67%−0.97
30 Jun 202013.64%−0.98
15 Jun 202014.62%+1.72
29 May 202012.90%−0.47
15 May 202013.37%−0.97
30 Apr 202014.34%+0.28
15 Apr 202014.06%+0.41
31 Mar 202013.65%−2.74
13 Mar 202016.39%+1.26
28 Feb 202015.13%+2.25
14 Feb 202012.88%+5.80
31 Jan 20207.08%+0.19
15 Jan 20206.89%+0.82
31 Dec 20196.07%+1.12
13 Dec 20194.95%−0.78
29 Nov 20195.73%+0.21
15 Nov 20195.52%−1.79
31 Oct 20197.31%−0.66
15 Oct 20197.97%−0.24
30 Sep 20198.21%−0.18
13 Sep 20198.39%−0.62
30 Aug 20199.01%+0.46
15 Aug 20198.55%−0.17
31 Jul 20198.72%−0.57
15 Jul 20199.29%+0.58
28 Jun 20198.71%+0.06
14 Jun 20198.65%+0.37
31 May 20198.28%−0.03
15 May 20198.31%+0.85
30 Apr 20197.46%+0.94
15 Apr 20196.52%−2.22
29 Mar 20198.74%+0.55
15 Mar 20198.19%+0.71
28 Feb 20197.48%−0.40
15 Feb 20197.88%−0.74
31 Jan 20198.62%−0.50
15 Jan 20199.12%0.00
31 Dec 20189.12%+1.26
14 Dec 20187.86%+0.06
30 Nov 20187.80%−2.24
15 Nov 201810.04%−0.60
31 Oct 201810.64%+1.24
15 Oct 20189.40%−1.90
28 Sep 201811.30%+0.63
14 Sep 201810.67%+0.02
31 Aug 201810.65%+1.18
15 Aug 20189.47%+0.71
31 Jul 20188.76%+0.59
13 Jul 20188.17%+1.29
29 Jun 20186.88%+1.22
15 Jun 20185.66%−1.09
31 May 20186.75%+0.93
15 May 20185.82%−0.18
30 Apr 20186.00%−2.02
13 Apr 20188.02%+0.71
29 Mar 20187.31%−0.82
15 Mar 20188.13%−0.97
28 Feb 20189.10%−0.93
15 Feb 201810.03%−0.10
31 Jan 201810.13%−1.22
12 Jan 201811.35%+0.02
29 Dec 201711.33%–

Newest first. Scroll inside the table for earlier dates, back to 29 Dec 2017.

Frequently asked questions

How shorted is COLLEGIUM PHARMACEUTICAL, INC right now?
17.43% of COLLEGIUM PHARMACEUTICAL, INC's (COLL) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 196th 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 COLL'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 COLL's days to cover?
6.03 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.