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How shorted is Biohaven Ltd.? BHVN

#370most shorted US stockof 3,805 ranked stocks, more shorted than 90%

The ticker BHVN previously referred to Biohaven Ltd. (to 2022).

13.54%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.96
5 reports (~10 weeks)
−0.06
days to cover
6.52
Aggregate net short position time series for Biohaven Ltd.

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 Biohaven Ltd. 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
10 Aug 202612.08% 31 Jul 202611.80% 14 Aug 2026−0.28
4 May 202616.51% 30 Apr 202616.00% 15 May 2026−0.51
2 Mar 202619.87% 27 Feb 202620.69% 13 Mar 2026+0.82
10 Nov 20259.13% 31 Oct 202512.40% 14 Nov 2025+3.27
11 Aug 202512.46% 31 Jul 202510.37% 15 Aug 2025−2.09
12 May 20257.65% 30 Apr 20258.01% 15 May 2025+0.36
3 Mar 20258.12% 28 Feb 20257.18% 14 Mar 2025−0.94
12 Nov 20249.68% 31 Oct 20247.74% 15 Nov 2024−1.94

Fails to deliver

The SEC's fails-to-deliver figure for BHVN: 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
1
25 Aug 2026
Highest in window
276,824
24 Sep 2025
Days with a balance
47
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Biohaven Ltd. 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 277K shares.

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Sector: Healthcare · By year: 2023 · 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202613.54%+0.96
31 Aug 202612.58%+0.78
14 Aug 202611.80%−0.28
31 Jul 202612.08%−0.77
15 Jul 202612.85%−0.75
30 Jun 202613.60%−3.34
15 Jun 202616.94%+0.17
29 May 202616.77%+0.77
15 May 202616.00%−0.51
30 Apr 202616.51%−5.96
15 Apr 202622.47%+0.01
31 Mar 202622.46%+1.77
13 Mar 202620.69%+0.82
27 Feb 202619.87%−0.44
13 Feb 202620.31%+0.74
30 Jan 202619.57%−0.01
15 Jan 202619.58%+0.69
31 Dec 202518.89%+2.83
15 Dec 202516.06%+0.51
28 Nov 202515.55%+3.15
14 Nov 202512.40%+3.27
31 Oct 20259.13%−0.61
15 Oct 20259.74%−0.61
30 Sep 202510.35%−2.12
15 Sep 202512.47%+2.41
29 Aug 202510.06%−0.31
15 Aug 202510.37%−2.09
31 Jul 202512.46%−0.75
15 Jul 202513.21%+1.21
30 Jun 202512.00%+1.34
13 Jun 202510.66%+0.06
30 May 202510.60%+2.59
15 May 20258.01%+0.36
30 Apr 20257.65%+0.12
15 Apr 20257.53%+0.20
31 Mar 20257.33%+0.15
14 Mar 20257.18%−0.94
28 Feb 20258.12%−0.40
14 Feb 20258.52%−0.81
31 Jan 20259.33%−0.50
15 Jan 20259.83%+0.22
31 Dec 20249.61%+1.95
13 Dec 20247.66%−0.09
29 Nov 20247.75%+0.01
15 Nov 20247.74%−1.94
31 Oct 20249.68%−0.19
15 Oct 20249.87%+0.37
30 Sep 20249.50%−1.06
13 Sep 202410.56%−0.24
30 Aug 202410.80%−0.08
15 Aug 202410.88%−1.12
31 Jul 202412.00%−0.02
15 Jul 202412.02%−0.05
28 Jun 202412.07%+0.72
14 Jun 202411.35%−0.69
31 May 202412.04%+0.71
15 May 202411.33%−0.48
30 Apr 202411.81%+0.88
15 Apr 202410.93%+0.43
28 Mar 202410.50%−0.08
15 Mar 202410.58%+1.10
29 Feb 20249.48%+1.52
15 Feb 20247.96%−0.38
31 Jan 20248.34%+0.20
12 Jan 20248.14%−1.19
29 Dec 20239.33%+1.16
15 Dec 20238.17%−0.03
30 Nov 20238.20%+0.50
15 Nov 20237.70%−2.13
31 Oct 20239.83%+0.11
13 Oct 20239.72%−0.70
29 Sep 202310.42%+2.79
15 Sep 20237.63%−0.05
31 Aug 20237.68%−0.41
15 Aug 20238.09%+0.92
31 Jul 20237.17%+0.25
14 Jul 20236.92%−1.61
30 Jun 20238.53%−2.15
15 Jun 202310.68%+1.80
31 May 20238.88%−1.19
15 May 202310.07%−0.20
28 Apr 202310.27%+0.50
14 Apr 20239.77%−0.57
31 Mar 202310.34%+1.63
15 Mar 20238.71%−0.68
28 Feb 20239.39%+4.55
15 Feb 20234.84%−0.14
31 Jan 20234.98%−1.81
13 Jan 20236.79%–

Newest first. Scroll inside the table for earlier dates, back to 13 Jan 2023.

Frequently asked questions

How shorted is Biohaven Ltd. right now?
13.54% of Biohaven Ltd.'s (BHVN) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 370th 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 BHVN'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 BHVN'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.