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HowShorted

How shorted is INOVIO PHARMACEUTICALS, INC.? INO

#138most shorted US stockof 3,805 ranked stocks, more shorted than 96%

19.27%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.65
5 reports (~10 weeks)
−2.50
days to cover
6.54
Aggregate net short position time series for INOVIO PHARMACEUTICALS, 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 INOVIO PHARMACEUTICALS, 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
12 Aug 202623.22% 31 Jul 202619.31% 14 Aug 2026−3.91
29 Jul 202621.09% 15 Jul 202623.22% 31 Jul 2026+2.13
13 May 202620.60% 30 Apr 202623.13% 15 May 2026+2.53
12 Mar 202620.46% 27 Feb 202615.57% 13 Mar 2026−4.89
10 Nov 202515.45% 31 Oct 202515.42% 14 Nov 2025−0.03
12 Aug 202513.90% 31 Jul 202510.60% 15 Aug 2025−3.30
13 May 202517.63% 30 Apr 202519.12% 15 May 2025+1.49
18 Mar 202514.60% 14 Mar 202517.45% 31 Mar 2025+2.85

Fails to deliver

The SEC's fails-to-deliver figure for INO: 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
100,909
14 Sep 2026
Highest in window
3,554,588
17 Aug 2026
Days with a balance
172
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for INOVIO PHARMACEUTICALS, 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 3.6M 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 202619.27%+0.65
31 Aug 202618.62%−0.69
14 Aug 202619.31%−3.91
31 Jul 202623.22%+2.13
15 Jul 202621.09%−0.68
30 Jun 202621.77%−1.68
15 Jun 202623.45%−0.10
29 May 202623.55%+0.42
15 May 202623.13%+2.53
30 Apr 202620.60%+2.12
15 Apr 202618.48%+4.17
31 Mar 202614.31%−1.26
13 Mar 202615.57%−4.89
27 Feb 202620.46%−0.85
13 Feb 202621.31%−1.93
30 Jan 202623.24%+1.41
15 Jan 202621.83%+3.41
31 Dec 202518.42%+0.79
15 Dec 202517.63%+1.52
28 Nov 202516.11%+0.69
14 Nov 202515.42%−0.03
31 Oct 202515.45%+1.19
15 Oct 202514.26%−0.09
30 Sep 202514.35%+0.25
15 Sep 202514.10%+1.69
29 Aug 202512.41%+1.81
15 Aug 202510.60%−3.30
31 Jul 202513.90%−2.43
15 Jul 202516.33%+1.33
30 Jun 202515.00%−2.62
13 Jun 202517.62%−0.29
30 May 202517.91%−1.21
15 May 202519.12%+1.49
30 Apr 202517.63%−0.59
15 Apr 202518.22%+0.77
31 Mar 202517.45%+2.85
14 Mar 202514.60%−6.56
28 Feb 202521.16%+0.53
14 Feb 202520.63%+1.44
31 Jan 202519.19%+0.45
15 Jan 202518.74%+2.11
31 Dec 202416.63%−0.55
13 Dec 202417.18%+2.70
29 Nov 202414.48%+0.10
15 Nov 202414.38%+0.88
31 Oct 202413.50%+0.11
15 Oct 202413.39%+0.52
30 Sep 202412.87%+1.12
13 Sep 202411.75%+0.19
30 Aug 202411.56%+0.31
15 Aug 202411.25%−0.24
31 Jul 202411.49%−0.50
15 Jul 202411.99%+3.28
28 Jun 20248.71%+0.70
14 Jun 20248.01%+0.01
31 May 20248.00%−1.14
15 May 20249.14%+0.46
30 Apr 20248.68%−1.00
15 Apr 20249.68%+0.68
28 Mar 20249.00%+0.19
15 Mar 20248.81%+0.56
12 Jan 20248.25%−0.50
29 Dec 20238.75%−0.14
15 Dec 20238.89%−0.53
30 Nov 20239.42%−0.08
15 Nov 20239.50%+0.20
31 Oct 20239.30%−0.29
13 Oct 20239.59%+4.03
29 Sep 20235.56%−0.27
15 Sep 20235.83%−0.40
31 Aug 20236.23%−2.00
15 Aug 20238.23%−0.07
31 Jul 20238.30%+0.26
14 Jul 20238.04%−1.23
30 Jun 20239.27%−7.58
15 Jun 202316.85%+0.40
31 May 202316.45%+1.36
15 May 202315.09%−0.10
28 Apr 202315.19%−0.05
14 Apr 202315.24%+1.86
31 Mar 202313.38%−1.81
15 Mar 202315.19%−0.29
28 Feb 202315.48%−0.72
15 Feb 202316.20%−1.33
31 Jan 202317.53%−0.42
13 Jan 202317.95%+0.01
30 Dec 202217.94%−0.09
15 Dec 202218.03%+0.69
30 Nov 202217.34%−1.16
15 Nov 202218.50%+0.99
31 Oct 202217.51%−0.76
14 Oct 202218.27%+0.26
30 Sep 202218.01%−0.33
15 Sep 202218.34%+0.06
31 Aug 202218.28%+0.21
15 Aug 202218.07%−2.03
29 Jul 202220.10%+0.10
15 Jul 202220.00%+1.43
30 Jun 202218.57%+2.05
15 Jun 202216.52%+0.69
31 May 202215.83%−4.09
13 May 202219.92%−0.85
29 Apr 202220.77%−0.10
14 Apr 202220.87%+0.35
31 Mar 202220.52%−0.75
15 Mar 202221.27%−1.61
28 Feb 202222.88%+0.54
15 Feb 202222.34%−0.01
31 Jan 202222.35%+1.09
14 Jan 202221.26%−0.74
31 Dec 202122.00%+1.18
15 Dec 202120.82%−0.93
30 Nov 202121.75%−0.08
15 Nov 202121.83%−0.11
29 Oct 202121.94%+0.07
15 Oct 202121.87%+0.38
30 Sep 202121.49%+0.36
15 Sep 202121.13%+0.43
31 Aug 202120.70%+0.46
13 Aug 202120.24%−0.66
30 Jul 202120.90%−1.01
15 Jul 202121.91%+0.44
30 Jun 202121.47%−1.04
15 Jun 202122.51%−2.02
28 May 202124.53%−2.44
14 May 202126.97%+0.74
30 Apr 202126.23%+1.46
15 Apr 202124.77%−1.55
31 Mar 202126.32%−1.21
15 Mar 202127.53%+3.34
26 Feb 202124.19%−1.24
12 Feb 202125.43%−0.14
29 Jan 202125.57%−7.53
15 Jan 202133.10%−0.04
31 Dec 202033.14%+2.12
15 Dec 202031.02%−1.66
30 Nov 202032.68%−2.20
13 Nov 202034.88%+1.00
30 Oct 202033.88%+1.03
15 Oct 202032.85%−1.32
30 Sep 202034.17%+0.01
15 Sep 202034.16%+3.22
31 Aug 202030.94%+2.71
14 Aug 202028.23%+1.90
31 Jul 202026.33%+6.03
15 Jul 202020.30%−0.91
30 Jun 202021.21%+3.53
15 Jun 202017.68%−0.39
29 May 202018.07%+2.35
15 May 202015.72%+0.58
30 Apr 202015.14%+0.94
15 Apr 202014.20%+0.04
31 Mar 202014.16%−0.65
13 Mar 202014.81%−1.33
28 Feb 202016.14%+3.13
14 Feb 202013.01%+0.72
31 Jan 202012.29%+2.33
15 Jan 20209.96%−0.45
31 Dec 201910.41%−0.16
13 Dec 201910.57%−0.12
29 Nov 201910.69%−0.33
15 Nov 201911.02%−0.18
31 Oct 201911.20%−0.62
15 Oct 201911.82%+0.04
30 Sep 201911.78%+0.55
13 Sep 201911.23%+0.16
30 Aug 201911.07%−0.06
15 Aug 201911.13%−0.07
31 Jul 201911.20%−0.19
15 Jul 201911.39%−0.63
28 Jun 201912.02%−2.08
14 Jun 201914.10%+0.04
31 May 201914.06%−0.53
15 May 201914.59%−0.06
30 Apr 201914.65%+0.30
15 Apr 201914.35%+0.54
29 Mar 201913.81%+1.42
15 Mar 201912.39%+2.54
28 Feb 20199.85%+2.50
15 Feb 20197.35%+0.39
31 Jan 20196.96%+0.21
15 Jan 20196.75%+0.36
31 Dec 20186.39%+0.78
14 Dec 20185.61%−0.26
30 Nov 20185.87%−0.20
15 Nov 20186.07%−1.65
31 Oct 20187.72%−0.09
15 Oct 20187.81%−0.07
28 Sep 20187.88%−0.20
14 Sep 20188.08%−0.88
31 Aug 20188.96%−0.95
15 Aug 20189.91%−0.29
31 Jul 201810.20%−0.48
13 Jul 201810.68%−0.60
29 Jun 201811.28%−0.24
15 Jun 201811.52%+0.90
31 May 201810.62%−0.91
15 May 201811.53%+0.12
30 Apr 201811.41%+0.02
13 Apr 201811.39%−0.12
29 Mar 201811.51%−0.14
15 Mar 201811.65%−0.40
28 Feb 201812.05%+0.25
15 Feb 201811.80%+1.37
31 Jan 201810.43%+0.65
12 Jan 20189.78%+0.77
29 Dec 20179.01%–

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

Frequently asked questions

How shorted is INOVIO PHARMACEUTICALS, INC. right now?
19.27% of INOVIO PHARMACEUTICALS, INC.'s (INO) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 138th 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 INO'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 INO's days to cover?
6.54 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.