Skip to content
HowShorted

How shorted is Fortress Biotech, Inc.? FBIO

#344most shorted US stockof 3,805 ranked stocks, more shorted than 90%

13.89%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.91
5 reports (~10 weeks)
−0.59
days to cover
18.97
Aggregate net short position time series for Fortress Biotech, 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 Fortress Biotech, 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
13 Aug 202615.78% 31 Jul 202615.16% 14 Aug 2026−0.62
14 May 202613.05% 30 Apr 202613.32% 15 May 2026+0.27
31 Mar 202612.41% 13 Mar 202612.76% 15 Apr 2026+0.35
14 Nov 202510.57% 31 Oct 202510.75% 28 Nov 2025+0.18
14 Aug 20259.04% 31 Jul 20258.41% 15 Aug 2025−0.63
15 May 202511.19% 30 Apr 202510.19% 30 May 2025−1.00
31 Mar 202512.16% 14 Mar 202511.02% 15 Apr 2025−1.14
14 Nov 20249.99% 31 Oct 20249.39% 15 Nov 2024−0.60

Fails to deliver

The SEC's fails-to-deliver figure for FBIO: 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
3,111
11 Sep 2026
Highest in window
103,114
29 Sep 2025
Days with a balance
193
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Fortress Biotech, 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 103K shares.

Embed this chart

Paste this snippet to embed the interactive chart. It updates with each FINRA report and keeps the source attribution. Preview

Download chart cardShare on XRedditLinkedIn
Cite this page
Plain
Wikipedia
BibTeX

Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202613.89%−0.91
31 Aug 202614.80%−0.36
14 Aug 202615.16%−0.62
31 Jul 202615.78%+1.10
15 Jul 202614.68%+0.20
30 Jun 202614.48%+0.45
15 Jun 202614.03%+0.14
29 May 202613.89%+0.57
15 May 202613.32%+0.27
30 Apr 202613.05%+0.29
15 Apr 202612.76%+0.52
31 Mar 202612.24%−0.17
13 Mar 202612.41%−0.60
27 Feb 202613.01%+0.50
13 Feb 202612.51%−0.79
30 Jan 202613.30%+0.27
15 Jan 202613.03%+1.29
31 Dec 202511.74%+1.22
15 Dec 202510.52%−0.23
28 Nov 202510.75%−0.79
14 Nov 202511.54%+0.97
31 Oct 202510.57%+0.39
15 Oct 202510.18%−1.12
30 Sep 202511.30%−0.12
15 Sep 202511.42%+2.30
29 Aug 20259.12%+0.71
15 Aug 20258.41%−0.63
31 Jul 20259.04%−0.44
15 Jul 20259.48%−0.21
30 Jun 20259.69%−0.29
13 Jun 20259.98%−0.21
30 May 202510.19%−0.44
15 May 202510.63%−0.56
30 Apr 202511.19%+0.17
15 Apr 202511.02%0.00
31 Mar 202511.02%−1.14
14 Mar 202512.16%+0.31
28 Feb 202511.85%−0.06
14 Feb 202511.91%+0.37
31 Jan 202511.54%+0.34
15 Jan 202511.20%+0.23
31 Dec 202410.97%+0.96
13 Dec 202410.01%+0.93
29 Nov 20249.08%−0.31
15 Nov 20249.39%−0.60
31 Oct 20249.99%+0.19
15 Oct 20249.80%+0.84
30 Sep 20248.96%+0.70
13 Sep 20248.26%+1.70
30 Aug 20246.56%+0.42
15 Aug 20246.14%−0.66
31 Jul 20246.80%+0.48
15 Jul 20246.32%−0.78
28 Jun 20247.10%+0.52
14 Jun 20246.58%−0.33
31 May 20246.91%−0.23
15 May 20247.14%−0.60
30 Apr 20247.74%−0.30
15 Apr 20248.04%−0.27
28 Mar 20248.31%−5.68
15 Mar 202413.99%+1.54
29 Feb 202412.45%−0.81
15 Feb 202413.26%+1.19
31 Jan 202412.07%+1.64
12 Jan 202410.43%+1.29
29 Dec 20239.14%+1.80
15 Dec 20237.34%+2.34
30 Nov 20235.00%+2.90
15 Nov 20232.10%+1.60
29 Sep 20230.50%−0.02
15 Sep 20230.52%0.00
31 Aug 20230.52%+0.10
15 Aug 20230.42%−0.07
31 Jul 20230.49%+0.04
14 Jul 20230.45%+0.06
30 Jun 20230.39%+0.04
15 Jun 20230.35%−0.28
31 May 20230.63%+0.12
15 May 20230.51%+0.02
28 Apr 20230.49%−0.29
14 Apr 20230.78%−0.07
31 Mar 20230.85%+0.56
28 Feb 20230.29%−0.09
15 Feb 20230.38%−0.01
31 Jan 20230.39%+0.04
13 Jan 20230.35%−0.37
30 Dec 20220.72%+0.06
15 Dec 20220.66%+0.07
30 Nov 20220.59%+0.03
15 Nov 20220.56%+0.02
31 Oct 20220.54%+0.01
14 Oct 20220.53%−0.14
30 Sep 20220.67%+0.11
15 Sep 20220.56%0.00
31 Aug 20220.56%−0.04
15 Aug 20220.60%−2.41
15 Jun 20223.01%+0.25
31 May 20222.76%+0.08
13 May 20222.68%+0.25
29 Apr 20222.43%+0.72
14 Apr 20221.71%+0.23
31 Mar 20221.48%−0.03
15 Mar 20221.51%+0.24
28 Feb 20221.27%+0.20
15 Feb 20221.07%+0.08
31 Jan 20220.99%+0.14
14 Jan 20220.85%+0.02
31 Dec 20210.83%+0.12
15 Dec 20210.71%−0.21
30 Nov 20210.92%+0.09
15 Nov 20210.83%−0.17
29 Oct 20211.00%−0.03
15 Oct 20211.03%+0.29
30 Sep 20210.74%−0.15
15 Sep 20210.89%+0.13
31 Aug 20210.76%−0.17
13 Aug 20210.93%−0.01
30 Jul 20210.94%−0.06
15 Jul 20211.00%−0.21
30 Jun 20211.21%+0.10
15 Jun 20211.11%−0.01
28 May 20211.12%+0.11
14 May 20211.01%+0.15
30 Apr 20210.86%−0.93
15 Apr 20211.79%+0.57
31 Mar 20211.22%−0.27
15 Mar 20211.49%+0.14
26 Feb 20211.35%+0.12
12 Feb 20211.23%−0.04
29 Jan 20211.27%−0.13
15 Jan 20211.40%−0.17
31 Dec 20201.57%−0.06
15 Dec 20201.63%+0.24
30 Nov 20201.39%−0.94
13 Nov 20202.33%−0.29
30 Oct 20202.62%+0.44
15 Oct 20202.18%−0.21
30 Sep 20202.39%+0.15
15 Sep 20202.24%+0.73
31 Aug 20201.51%−0.15
14 Aug 20201.66%+0.97
15 Jun 20200.69%+0.10
29 May 20200.59%−0.23
15 May 20200.82%+0.20
30 Apr 20200.62%−0.11
15 Apr 20200.73%−0.53
31 Mar 20201.26%+0.55
13 Mar 20200.71%−0.26
28 Feb 20200.97%−0.18
14 Feb 20201.15%−0.06
31 Jan 20201.21%−0.27
15 Jan 20201.48%−0.06
31 Dec 20191.54%+0.60
13 Dec 20190.94%−0.52
29 Nov 20191.46%−0.17
15 Nov 20191.63%−0.24
31 Oct 20191.87%−0.16
15 Oct 20192.03%+0.36
30 Sep 20191.67%+0.22
13 Sep 20191.45%−0.35
30 Aug 20191.80%−0.05
15 Aug 20191.85%−0.53
31 Jul 20192.38%+0.39
15 Jul 20191.99%−2.67
28 Jun 20194.66%−0.35
14 Jun 20195.01%+0.56
31 May 20194.45%−0.33
15 May 20194.78%+0.27
30 Apr 20194.51%+0.52
15 Apr 20193.99%−0.02
29 Mar 20194.01%+0.66
15 Mar 20193.35%+0.29
28 Feb 20193.06%−0.40
15 Feb 20193.46%+1.64
31 Jan 20191.82%+0.24
15 Jan 20191.58%−0.03
31 Dec 20181.61%+0.01
14 Dec 20181.60%−0.03
30 Nov 20181.63%+0.09
15 Nov 20181.54%−0.10
31 Oct 20181.64%−0.05
15 Oct 20181.69%+0.04
28 Sep 20181.65%−0.09
14 Sep 20181.74%+0.39
31 Aug 20181.35%+0.01
15 Aug 20181.34%−0.09
31 Jul 20181.43%−0.28
13 Jul 20181.71%−0.12
29 Jun 20181.83%+0.16
15 Jun 20181.67%−0.18
31 May 20181.85%+0.31
15 May 20181.54%−0.05
30 Apr 20181.59%−0.48
13 Apr 20182.07%−0.41
29 Mar 20182.48%−0.33
15 Mar 20182.81%−0.29
28 Feb 20183.10%+0.38
15 Feb 20182.72%+0.36
31 Jan 20182.36%+0.02
12 Jan 20182.34%+0.25
29 Dec 20172.09%–

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

Frequently asked questions

How shorted is Fortress Biotech, Inc. right now?
13.89% of Fortress Biotech, Inc.'s (FBIO) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 344th 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 FBIO'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 FBIO's days to cover?
18.97 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.