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HowShorted

How shorted is Verastem, Inc.? VSTM

#124most shorted US stockof 3,805 ranked stocks, more shorted than 96%

19.91%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.29
5 reports (~10 weeks)
−7.58
days to cover
6.52
Aggregate net short position time series for Verastem, 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 Verastem, 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 202622.57% 31 Jul 202620.88% 14 Aug 2026−1.69
4 Feb 202624.65% 30 Jan 202627.03% 13 Feb 2026+2.38
4 Nov 202528.65% 31 Oct 202528.66% 14 Nov 2025+0.01
13 Jan 20256.94% 31 Dec 202411.07% 15 Jan 2025+4.13
2 Feb 20230.55% 31 Jan 20230.53% 15 Feb 2023−0.02
8 Aug 20222.21% 29 Jul 20221.79% 15 Aug 2022−0.42
28 Mar 20225.13% 15 Mar 20223.45% 31 Mar 2022−1.68
10 Aug 20206.95% 31 Jul 20205.89% 14 Aug 2020−1.06

Fails to deliver

The SEC's fails-to-deliver figure for VSTM: 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
5,469
8 Sep 2026
Highest in window
188,009
25 Nov 2025
Days with a balance
59
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Verastem, 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 188K 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 202619.91%−0.29
31 Aug 202620.20%−0.68
14 Aug 202620.88%−1.69
31 Jul 202622.57%−0.32
15 Jul 202622.89%−4.60
30 Jun 202627.49%+2.70
15 Jun 202624.79%+0.64
29 May 202624.15%+3.80
15 May 202620.35%+0.40
30 Apr 202619.95%+0.12
15 Apr 202619.83%+1.20
31 Mar 202618.63%−1.69
13 Mar 202620.32%+0.86
27 Feb 202619.46%−7.57
13 Feb 202627.03%+2.38
30 Jan 202624.65%−0.98
15 Jan 202625.63%+0.15
31 Dec 202525.48%+0.44
15 Dec 202525.04%−2.51
28 Nov 202527.55%−1.11
14 Nov 202528.66%+0.01
31 Oct 202528.65%−0.75
15 Oct 202529.40%+1.01
30 Sep 202528.39%+1.06
15 Sep 202527.33%+1.39
29 Aug 202525.94%+0.01
15 Aug 202525.93%−7.19
31 Jul 202533.12%−2.05
15 Jul 202535.17%+4.58
30 Jun 202530.59%+6.93
13 Jun 202523.66%−1.94
30 May 202525.60%−0.19
15 May 202525.79%+7.68
30 Apr 202518.11%+0.99
15 Apr 202517.12%+1.81
31 Mar 202515.31%−1.14
14 Mar 202516.45%+3.05
28 Feb 202513.40%+0.86
14 Feb 202512.54%+0.77
31 Jan 202511.77%+0.70
15 Jan 202511.07%+4.13
31 Dec 20246.94%+1.05
13 Dec 20245.89%+1.39
29 Nov 20244.50%−0.80
15 Nov 20245.30%−0.82
31 Oct 20246.12%+0.06
15 Oct 20246.06%+0.22
30 Sep 20245.84%+0.72
13 Sep 20245.12%−0.09
30 Aug 20245.21%+0.32
15 Aug 20244.89%−2.39
31 Jul 20247.28%−1.68
15 Jul 20248.96%+3.91
28 Jun 20245.05%−0.16
14 Jun 20245.21%+2.01
15 May 20243.20%−0.06
30 Apr 20243.26%+0.07
15 Apr 20243.19%+0.68
28 Mar 20242.51%−0.55
15 Mar 20243.06%+0.04
29 Feb 20243.02%+0.13
15 Feb 20242.89%+0.77
31 Jan 20242.12%+0.38
12 Jan 20241.74%+0.22
29 Dec 20231.52%+0.17
15 Dec 20231.35%−0.70
30 Nov 20232.05%+0.14
15 Nov 20231.91%−0.34
31 Oct 20232.25%+0.35
13 Oct 20231.90%−0.43
29 Sep 20232.33%+0.44
15 Sep 20231.89%+0.02
31 Aug 20231.87%−0.02
15 Aug 20231.89%+1.40
15 May 20230.49%−0.13
28 Apr 20230.62%+0.08
14 Apr 20230.54%−0.09
31 Mar 20230.63%−0.18
15 Mar 20230.81%+0.26
28 Feb 20230.55%+0.02
15 Feb 20230.53%−0.02
31 Jan 20230.55%0.00
13 Jan 20230.55%−0.38
30 Dec 20220.93%+0.02
15 Dec 20220.91%−0.20
30 Nov 20221.11%+0.03
15 Nov 20221.08%−0.82
31 Oct 20221.90%+0.60
14 Oct 20221.30%−0.31
30 Sep 20221.61%−0.12
15 Sep 20221.73%+0.02
31 Aug 20221.71%−0.08
15 Aug 20221.79%−0.42
29 Jul 20222.21%−0.15
15 Jul 20222.36%−0.24
30 Jun 20222.60%−1.78
15 Jun 20224.38%+0.24
31 May 20224.14%+0.07
13 May 20224.07%+0.11
29 Apr 20223.96%+0.74
14 Apr 20223.22%−0.23
31 Mar 20223.45%−1.68
15 Mar 20225.13%+0.22
28 Feb 20224.91%+0.06
15 Feb 20224.85%+0.42
31 Jan 20224.43%+0.97
14 Jan 20223.46%+0.29
31 Dec 20213.17%−0.56
15 Dec 20213.73%−0.10
30 Nov 20213.83%+0.05
15 Nov 20213.78%−0.27
29 Oct 20214.05%−0.09
15 Oct 20214.14%−0.57
30 Sep 20214.71%+1.55
15 Sep 20213.16%−0.53
31 Aug 20213.69%−0.52
13 Aug 20214.21%0.00
30 Jul 20214.21%−4.02
15 Jul 20218.23%+0.44
30 Jun 20217.79%+1.68
15 Jun 20216.11%+1.47
28 May 20214.64%+1.91
14 May 20212.73%−0.36
30 Apr 20213.09%−0.31
15 Apr 20213.40%−0.06
31 Mar 20213.46%−0.23
15 Mar 20213.69%−0.07
26 Feb 20213.76%+0.64
12 Feb 20213.12%−0.20
29 Jan 20213.32%−0.73
15 Jan 20214.05%−0.13
31 Dec 20204.18%+0.49
15 Dec 20203.69%+1.14
30 Nov 20202.55%−0.77
13 Nov 20203.32%−0.07
30 Oct 20203.39%+0.13
15 Oct 20203.26%−2.68
30 Sep 20205.94%−0.93
15 Sep 20206.87%+0.65
31 Aug 20206.22%+0.33
14 Aug 20205.89%−1.06
31 Jul 20206.95%+1.01
15 Jul 20205.94%+0.11
30 Jun 20205.83%−0.52
15 Jun 20206.35%+0.41
29 May 20205.94%−0.09
15 May 20206.03%−0.13
30 Apr 20206.16%+0.88
15 Apr 20205.28%−0.04
31 Mar 20205.32%−0.96
13 Mar 20206.28%−9.60
28 Feb 202015.88%−1.28
14 Feb 202017.16%−0.86
31 Jan 202018.02%+2.62
15 Jan 202015.40%−1.13
31 Dec 201916.53%−1.16
13 Dec 201917.69%−1.32
29 Nov 201919.01%+1.92
15 Nov 201917.09%−1.95
31 Oct 201919.04%−0.83
15 Oct 201919.87%+0.25
30 Sep 201919.62%+0.03
13 Sep 201919.59%+1.23
30 Aug 201918.36%−1.22
15 Aug 201919.58%−0.49
31 Jul 201920.07%−0.82
15 Jul 201920.89%−3.46
28 Jun 201924.35%−0.86
14 Jun 201925.21%−0.99
31 May 201926.20%+0.12
15 May 201926.08%+2.92
30 Apr 201923.16%+0.74
15 Apr 201922.42%−0.38
29 Mar 201922.80%−9.94
15 Mar 201932.74%+0.50
28 Feb 201932.24%+0.69
15 Feb 201931.55%+1.56
31 Jan 201929.99%+2.17
15 Jan 201927.82%+1.58
31 Dec 201826.24%+2.60
14 Dec 201823.64%−2.40
30 Nov 201826.04%−0.51
15 Nov 201826.55%+1.20
31 Oct 201825.35%+2.93
15 Oct 201822.42%+2.55
28 Sep 201819.87%+8.91
14 Sep 201810.96%+2.01
31 Aug 20188.95%+0.78
15 Aug 20188.17%+3.78
15 Jun 20184.39%+2.07
31 May 20182.32%+0.27
15 May 20182.05%−0.15
30 Apr 20182.20%−0.73
13 Apr 20182.93%−0.07
29 Mar 20183.00%−0.26
15 Mar 20183.26%−1.24
28 Feb 20184.50%0.00
15 Feb 20184.50%+0.72
31 Jan 20183.78%−0.50
12 Jan 20184.28%+1.79
29 Dec 20172.49%–

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

Frequently asked questions

How shorted is Verastem, Inc. right now?
19.91% of Verastem, Inc.'s (VSTM) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 124th 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 VSTM'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 VSTM's days to cover?
6.52 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.