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HowShorted

How shorted is ImmunityBio, Inc.? IBRX

#500most shorted US stockof 3,805 ranked stocks, more shorted than 86%

11.83%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.02
5 reports (~10 weeks)
−0.76
days to cover
15.86
Aggregate net short position time series for ImmunityBio, 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 ImmunityBio, 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
4 Aug 202612.17% 31 Jul 202612.03% 14 Aug 2026−0.14
7 May 202614.02% 30 Apr 202612.68% 15 May 2026−1.34
9 Apr 202613.76% 31 Mar 202614.25% 15 Apr 2026+0.49
23 Feb 202613.68% 13 Feb 202613.45% 27 Feb 2026−0.23
15 Jan 202612.25% 31 Dec 202513.72% 30 Jan 2026+1.47
5 Nov 20257.49% 31 Oct 20258.23% 14 Nov 2025+0.74
5 Aug 20258.15% 31 Jul 20257.95% 15 Aug 2025−0.20
25 Jul 20259.02% 15 Jul 20258.15% 31 Jul 2025−0.87

Fails to deliver

The SEC's fails-to-deliver figure for IBRX: 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.

Latest balance
3,560
14 Sep 2026
Highest in window
2,981,021
21 Jan 2026
Days with a balance
202
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for ImmunityBio, 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 3.0M shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202611.83%−0.02
31 Aug 202611.85%−0.18
14 Aug 202612.03%−0.14
31 Jul 202612.17%−0.66
15 Jul 202612.83%+0.24
30 Jun 202612.59%−0.31
15 Jun 202612.90%+0.28
29 May 202612.62%−0.06
15 May 202612.68%−1.34
30 Apr 202614.02%−0.23
15 Apr 202614.25%+0.49
31 Mar 202613.76%+0.14
13 Mar 202613.62%+0.17
27 Feb 202613.45%−0.23
13 Feb 202613.68%−0.04
30 Jan 202613.72%+0.83
15 Jan 202612.89%+0.64
31 Dec 202512.25%+1.18
15 Dec 202511.07%+2.08
28 Nov 20258.99%+0.76
14 Nov 20258.23%+0.74
31 Oct 20257.49%−0.19
15 Oct 20257.68%−0.09
30 Sep 20257.77%−1.18
15 Sep 20258.95%+0.98
29 Aug 20257.97%+0.02
15 Aug 20257.95%−0.20
31 Jul 20258.15%−0.87
15 Jul 20259.02%0.00
30 Jun 20259.02%+0.54
13 Jun 20258.48%+0.03
30 May 20258.45%−0.19
15 May 20258.64%+0.58
30 Apr 20258.06%+0.19
15 Apr 20257.87%+0.47
31 Mar 20257.40%+0.42
14 Mar 20256.98%−0.16
28 Feb 20257.14%−1.03
14 Feb 20258.17%+0.14
31 Jan 20258.03%+0.20
15 Jan 20257.83%+0.65
31 Dec 20247.18%+0.81
13 Dec 20246.37%−0.77
29 Nov 20247.14%−0.33
15 Nov 20247.47%−0.10
31 Oct 20247.57%+0.16
15 Oct 20247.41%−0.15
30 Sep 20247.56%+0.28
13 Sep 20247.28%−0.08
30 Aug 20247.36%+0.30
15 Aug 20247.06%+0.12
31 Jul 20246.94%−0.25
15 Jul 20247.19%−0.09
28 Jun 20247.28%−0.65
14 Jun 20247.93%0.00
31 May 20247.93%0.00
15 May 20247.93%−0.25
30 Apr 20248.18%+0.04
15 Apr 20248.14%+0.01
28 Mar 20248.13%+0.23
15 Mar 20247.90%+0.18
29 Feb 20247.72%+0.66
15 Feb 20247.06%+0.48
31 Jan 20246.58%+0.30
12 Jan 20246.28%+0.21
29 Dec 20236.07%+0.40
15 Dec 20235.67%+0.26
30 Nov 20235.41%+0.07
15 Nov 20235.34%−3.85
31 Oct 20239.19%+0.06
13 Oct 20239.13%+0.46
29 Sep 20238.67%+0.68
15 Sep 20237.99%+2.13
31 Aug 20235.86%+0.87
15 Aug 20234.99%−0.49
31 Jul 20235.48%−0.05
14 Jul 20235.53%+0.19
30 Jun 20235.34%−0.04
15 Jun 20235.38%+0.24
31 May 20235.14%−0.59
15 May 20235.73%−1.76
28 Apr 20237.49%+0.84
14 Apr 20236.65%−0.03
31 Mar 20236.68%+0.30
15 Mar 20236.38%+0.67
28 Feb 20235.71%−0.23
15 Feb 20235.94%−0.06
31 Jan 20236.00%+0.35
13 Jan 20235.65%+0.05
30 Dec 20225.60%−0.33
15 Dec 20225.93%−0.02
30 Nov 20225.95%−0.07
15 Nov 20226.02%+0.09
31 Oct 20225.93%+0.06
14 Oct 20225.87%−0.30
30 Sep 20226.17%+0.73
15 Sep 20225.44%+0.40
31 Aug 20225.04%+0.31
15 Aug 20224.73%+0.04
29 Jul 20224.69%+0.05
15 Jul 20224.64%−0.02
30 Jun 20224.66%−0.18
15 Jun 20224.84%+0.20
31 May 20224.64%+0.37
13 May 20224.27%−0.06
29 Apr 20224.33%+0.18
14 Apr 20224.15%+0.14
31 Mar 20224.01%−0.18
15 Mar 20224.19%+0.08
28 Feb 20224.11%+0.45
15 Feb 20223.66%+0.39
31 Jan 20223.27%+0.15
14 Jan 20223.12%+0.02
31 Dec 20213.10%+0.48
15 Dec 20212.62%+0.22
30 Nov 20212.40%+0.11
15 Nov 20212.29%+0.02
29 Oct 20212.27%−0.08
15 Oct 20212.35%−0.14
30 Sep 20212.49%+0.08
15 Sep 20212.41%+0.05
31 Aug 20212.36%−0.10
13 Aug 20212.46%−6.24
30 Jul 20218.70%+0.56
15 Jul 20218.14%−0.44
30 Jun 20218.58%+0.99
15 Jun 20217.59%+0.26
28 May 20217.33%+0.02
14 May 20217.31%+1.02
30 Apr 20216.29%−0.31
15 Apr 20216.60%+2.99
26 Feb 20213.61%−1.39
12 Feb 20215.00%−1.03
29 Jan 20216.03%−0.37
15 Jan 20216.40%+0.68
31 Dec 20205.72%−0.59
15 Dec 20206.31%+0.13
30 Nov 20206.18%−0.24
13 Nov 20206.42%+0.13
30 Oct 20206.29%+0.37
15 Oct 20205.92%+0.45
30 Sep 20205.47%+0.22
15 Sep 20205.25%+0.80
31 Aug 20204.45%+0.14
14 Aug 20204.31%−0.48
31 Jul 20204.79%−0.18
15 Jul 20204.97%−0.53
30 Jun 20205.50%+0.76
15 Jun 20204.74%+0.37
29 May 20204.37%−0.60
15 May 20204.97%−0.02
30 Apr 20204.99%+1.30
15 Apr 20203.69%+0.81
31 Mar 20202.88%+0.84
13 Mar 20202.04%−0.67
28 Feb 20202.71%−0.91
14 Feb 20203.62%−0.19
31 Jan 20203.81%+0.86
15 Jan 20202.95%+0.08
31 Dec 20192.87%+0.72
13 Dec 20192.15%−0.27
29 Nov 20192.42%−0.47
15 Nov 20192.89%+0.05
31 Oct 20192.84%−0.14
15 Oct 20192.98%−0.08
30 Sep 20193.06%−0.08
13 Sep 20193.14%−0.19
30 Aug 20193.33%−0.11
15 Aug 20193.44%−0.85
31 Jul 20194.29%−0.21
15 Jul 20194.50%−2.20
28 Jun 20196.70%−0.35
14 Jun 20197.05%+0.39
31 May 20196.66%+0.13
15 May 20196.53%+0.10
30 Apr 20196.43%+1.28
15 Apr 20195.15%+0.56
29 Mar 20194.59%+0.12
15 Mar 20194.47%+0.60
28 Feb 20193.87%+0.18
15 Feb 20193.69%+0.44
31 Jan 20193.25%+0.16
15 Jan 20193.09%+0.30
31 Dec 20182.79%−0.94
14 Dec 20183.73%+0.02
30 Nov 20183.71%+0.33
15 Nov 20183.38%+0.18
31 Oct 20183.20%−0.02
15 Oct 20183.22%−0.19
28 Sep 20183.41%−0.12
14 Sep 20183.53%−0.04
31 Aug 20183.57%−0.05
15 Aug 20183.62%+0.07
31 Jul 20183.55%−0.14
13 Jul 20183.69%−0.09
29 Jun 20183.78%−0.25
15 Jun 20184.03%+0.32
31 May 20183.71%−0.32
15 May 20184.03%−0.07
30 Apr 20184.10%−0.32
13 Apr 20184.42%−0.04
29 Mar 20184.46%+0.14
15 Mar 20184.32%−0.07
28 Feb 20184.39%−0.54
15 Feb 20184.93%+0.17
31 Jan 20184.76%−0.05
12 Jan 20184.81%−0.07
29 Dec 20174.88%–

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

Frequently asked questions

How shorted is ImmunityBio, Inc. right now?
11.83% of ImmunityBio, Inc.'s (IBRX) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 500th 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 IBRX'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 IBRX's days to cover?
15.86 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.