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HowShorted

How shorted is Vir Biotechnology, Inc.? VIR

#516most shorted US stockof 3,805 ranked stocks, more shorted than 86%

11.62%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.99
5 reports (~10 weeks)
+0.24
days to cover
9.47
Aggregate net short position time series for Vir Biotechnology, 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 Vir Biotechnology, 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 202611.25% 31 Jul 202611.58% 14 Aug 2026+0.33
6 May 20269.56% 30 Apr 20269.98% 15 May 2026+0.42
23 Feb 20269.19% 13 Feb 20269.83% 27 Feb 2026+0.64
12 Jan 20268.44% 31 Dec 20258.62% 15 Jan 2026+0.18
5 Nov 20256.89% 31 Oct 20257.90% 14 Nov 2025+1.01
6 Aug 20258.02% 31 Jul 20258.27% 15 Aug 2025+0.25
7 May 20257.46% 30 Apr 20257.92% 15 May 2025+0.46
26 Feb 20255.57% 14 Feb 20255.64% 28 Feb 2025+0.07

Fails to deliver

The SEC's fails-to-deliver figure for VIR: 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
36
31 Aug 2026
Highest in window
81,409
20 Jul 2026
Days with a balance
60
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Vir Biotechnology, 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 81K shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202611.62%−0.99
31 Aug 202612.61%+1.03
14 Aug 202611.58%+0.33
31 Jul 202611.25%+0.31
15 Jul 202610.94%−0.44
30 Jun 202611.38%+0.66
15 Jun 202610.72%−0.14
29 May 202610.86%+0.88
15 May 20269.98%+0.42
30 Apr 20269.56%−2.52
15 Apr 202612.08%−0.03
31 Mar 202612.11%+1.01
13 Mar 202611.10%+1.27
27 Feb 20269.83%+0.64
13 Feb 20269.19%+0.40
30 Jan 20268.79%+0.17
15 Jan 20268.62%+0.18
31 Dec 20258.44%+0.43
15 Dec 20258.01%+0.02
28 Nov 20257.99%+0.09
14 Nov 20257.90%+1.01
31 Oct 20256.89%−0.99
15 Oct 20257.88%0.00
30 Sep 20257.88%−0.65
15 Sep 20258.53%−0.05
29 Aug 20258.58%+0.31
15 Aug 20258.27%+0.25
31 Jul 20258.02%−0.15
15 Jul 20258.17%+0.05
30 Jun 20258.12%−0.10
13 Jun 20258.22%−0.11
30 May 20258.33%+0.41
15 May 20257.92%+0.46
30 Apr 20257.46%+0.08
15 Apr 20257.38%+0.04
31 Mar 20257.34%+1.62
14 Mar 20255.72%+0.08
28 Feb 20255.64%+0.07
14 Feb 20255.57%+0.02
31 Jan 20255.55%−0.15
15 Jan 20255.70%+0.94
31 Dec 20244.76%+0.34
13 Dec 20244.42%−0.06
29 Nov 20244.48%+0.48
15 Nov 20244.00%−0.15
31 Oct 20244.15%+0.09
15 Oct 20244.06%−0.13
30 Sep 20244.19%−0.18
13 Sep 20244.37%+0.05
30 Aug 20244.32%+0.20
15 Aug 20244.12%+0.50
31 Jul 20243.62%+0.13
15 Jul 20243.49%−0.01
28 Jun 20243.50%−1.52
14 Jun 20245.02%+0.60
31 May 20244.42%−0.15
15 May 20244.57%+0.23
30 Apr 20244.34%+0.51
15 Apr 20243.83%+0.14
28 Mar 20243.69%−0.35
15 Mar 20244.04%+0.26
29 Feb 20243.78%+0.03
15 Feb 20243.75%−0.54
31 Jan 20244.29%−0.23
12 Jan 20244.52%+0.12
29 Dec 20234.40%−0.28
15 Dec 20234.68%+0.32
30 Nov 20234.36%−0.20
15 Nov 20234.56%0.00
31 Oct 20234.56%−0.23
13 Oct 20234.79%0.00
29 Sep 20234.79%+1.01
15 Sep 20233.78%+0.37
31 Aug 20233.41%−0.34
15 Aug 20233.75%+1.12
31 Jul 20232.63%−0.34
14 Jul 20232.97%−0.13
30 Jun 20233.10%−0.01
15 Jun 20233.11%−1.06
31 May 20234.17%+0.40
15 May 20233.77%+0.24
28 Apr 20233.53%−0.07
14 Apr 20233.60%+0.39
31 Mar 20233.21%−0.41
15 Mar 20233.62%−0.04
28 Feb 20233.66%+0.35
15 Feb 20233.31%+0.27
31 Jan 20233.04%+0.24
13 Jan 20232.80%−0.32
30 Dec 20223.12%+0.27
15 Dec 20222.85%−0.17
30 Nov 20223.02%−0.15
15 Nov 20223.17%−0.14
31 Oct 20223.31%+0.13
14 Oct 20223.18%−0.56
30 Sep 20223.74%+0.29
15 Sep 20223.45%−0.25
31 Aug 20223.70%−0.60
15 Aug 20224.30%−1.12
29 Jul 20225.42%+0.07
15 Jul 20225.35%−0.34
30 Jun 20225.69%+0.05
15 Jun 20225.64%−0.29
31 May 20225.93%−0.32
13 May 20226.25%−0.52
29 Apr 20226.77%+0.27
14 Apr 20226.50%+3.74
31 Mar 20222.76%−0.12
15 Mar 20222.88%+0.21
28 Feb 20222.67%+0.06
15 Feb 20222.61%+0.37
31 Jan 20222.24%−0.46
14 Jan 20222.70%−0.27
31 Dec 20212.97%−0.89
15 Dec 20213.86%−0.36
30 Nov 20214.22%+0.15
15 Nov 20214.07%−0.04
29 Oct 20214.11%−0.05
15 Oct 20214.16%+0.14
30 Sep 20214.02%−0.35
15 Sep 20214.37%−0.13
31 Aug 20214.50%−0.69
13 Aug 20215.19%−0.91
30 Jul 20216.10%−0.52
15 Jul 20216.62%+0.15
30 Jun 20216.47%−0.46
15 Jun 20216.93%+0.31
28 May 20216.62%+0.06
14 May 20216.56%−0.03
30 Apr 20216.59%+0.13
15 Apr 20216.46%+0.25
31 Mar 20216.21%−0.35
15 Mar 20216.56%+0.19
26 Feb 20216.37%−0.26
12 Feb 20216.63%−1.10
29 Jan 20217.73%−3.63
15 Jan 202111.36%+0.86
31 Dec 202010.50%+1.85
15 Dec 20208.65%−0.43
30 Nov 20209.08%+0.64
13 Nov 20208.44%+1.39
30 Oct 20207.05%+1.11
15 Oct 20205.94%+0.25
30 Sep 20205.69%+1.68
15 Sep 20204.01%+1.31
31 Aug 20202.70%+0.32
14 Aug 20202.38%−1.20
31 Jul 20203.58%+0.39
15 Jul 20203.19%−0.69
30 Jun 20203.88%+1.33
15 Jun 20202.55%+0.69
29 May 20201.86%+0.46
15 May 20201.40%+0.30
30 Apr 20201.10%−0.47
15 Apr 20201.57%+0.14
31 Mar 20201.43%+0.02
13 Mar 20201.41%−0.22
28 Feb 20201.63%+0.41
14 Feb 20201.22%−0.28
31 Jan 20201.50%+0.09
15 Jan 20201.41%–

Newest first. Scroll inside the table for earlier dates, back to 15 Jan 2020.

Frequently asked questions

How shorted is Vir Biotechnology, Inc. right now?
11.62% of Vir Biotechnology, Inc.'s (VIR) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 516th 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 VIR'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 VIR's days to cover?
9.47 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.