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HowShorted

How shorted is Actinium Pharmaceuticals, Inc? ATNM

#2,815most shorted US stockof 3,805 ranked stocks, more shorted than 26%

2.25%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.12
5 reports (~10 weeks)
−0.74
days to cover
3.45
Aggregate net short position time series for Actinium 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 Actinium Pharmaceuticals, Inc days to cover

Fails to deliver

The SEC's fails-to-deliver figure for ATNM: 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
934
1 Sep 2026
Highest in window
14,394
23 Mar 2026
Days with a balance
71
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Actinium 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 14K shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20262.25%+0.12
31 Aug 20262.13%−0.31
14 Aug 20262.44%−0.07
31 Jul 20262.51%−0.10
15 Jul 20262.61%−0.38
30 Jun 20262.99%+0.03
15 Jun 20262.96%−0.49
29 May 20263.45%+0.11
15 May 20263.34%−0.04
30 Apr 20263.38%−0.11
15 Apr 20263.49%−0.55
31 Mar 20264.04%+0.68
13 Mar 20263.36%−0.06
27 Feb 20263.42%+0.02
13 Feb 20263.40%+0.05
30 Jan 20263.35%+0.26
15 Jan 20263.09%+0.28
31 Dec 20252.81%−0.04
15 Dec 20252.85%+0.01
28 Nov 20252.84%+0.10
14 Nov 20252.74%+0.01
31 Oct 20252.73%+0.10
15 Oct 20252.63%−0.01
30 Sep 20252.64%−0.17
15 Sep 20252.81%−0.14
29 Aug 20252.95%−0.27
15 Aug 20253.22%+0.70
31 Jul 20252.52%−0.78
15 Jul 20253.30%−0.95
30 Jun 20254.25%−0.35
13 Jun 20254.60%−1.59
30 May 20256.19%+0.33
15 May 20255.86%−1.44
30 Apr 20257.30%+1.94
15 Apr 20255.36%−2.75
31 Mar 20258.11%+1.02
14 Mar 20257.09%−0.11
28 Feb 20257.20%+0.12
14 Feb 20257.08%+0.60
31 Jan 20256.48%−0.19
15 Jan 20256.67%+0.13
31 Dec 20246.54%+0.79
13 Dec 20245.75%+0.99
29 Nov 20244.76%+0.15
15 Nov 20244.61%−0.05
31 Oct 20244.66%−0.67
15 Oct 20245.33%−0.99
30 Sep 20246.32%−0.96
13 Sep 20247.28%+0.16
30 Aug 20247.12%+0.27
15 Aug 20246.85%−1.54
31 Jul 20248.39%+1.09
15 Jul 20247.30%+0.90
28 Jun 20246.40%+0.57
14 Jun 20245.83%−0.33
31 May 20246.16%−0.95
15 May 20247.11%−0.81
30 Apr 20247.92%+1.19
15 Apr 20246.73%−0.71
28 Mar 20247.44%+0.79
15 Mar 20246.65%+0.07
29 Feb 20246.58%−0.22
15 Feb 20246.80%+0.05
31 Jan 20246.75%−0.51
12 Jan 20247.26%+0.16
29 Dec 20237.10%+0.15
15 Dec 20236.95%−0.50
30 Nov 20237.45%+0.70
15 Nov 20236.75%−0.66
31 Oct 20237.41%−0.16
13 Oct 20237.57%−0.06
29 Sep 20237.63%+0.40
15 Sep 20237.23%−0.41
31 Aug 20237.64%−0.18
15 Aug 20237.82%−0.39
31 Jul 20238.21%−0.08
14 Jul 20238.29%−0.02
30 Jun 20238.31%+1.78
15 Jun 20236.53%+1.79
31 May 20234.74%−1.95
15 May 20236.69%+1.55
28 Apr 20235.14%−1.93
14 Apr 20237.07%−0.33
31 Mar 20237.40%+1.76
15 Mar 20235.64%−0.13
28 Feb 20235.77%−0.62
15 Feb 20236.39%+0.28
31 Jan 20236.11%+1.71
13 Jan 20234.40%+0.06
30 Dec 20224.34%−0.17
15 Dec 20224.51%−0.30
30 Nov 20224.81%+1.28
15 Nov 20223.53%+1.60
31 Oct 20221.93%+0.36
14 Oct 20221.57%+0.08
30 Sep 20221.49%+0.09
15 Sep 20221.40%−0.16
31 Aug 20221.56%+0.09
15 Aug 20221.47%−0.16
29 Jul 20221.63%−0.05
15 Jul 20221.68%−0.31
30 Jun 20221.99%−0.52
15 Jun 20222.51%−0.79
31 May 20223.30%−0.69
13 May 20223.99%−0.20
29 Apr 20224.19%−1.88
14 Apr 20226.07%+3.52
31 Mar 20222.55%−0.12
15 Mar 20222.67%−0.15
28 Feb 20222.82%−1.01
15 Feb 20223.83%+0.03
31 Jan 20223.80%−0.13
14 Jan 20223.93%+0.04
31 Dec 20213.89%−0.02
15 Dec 20213.91%−0.14
30 Nov 20214.05%−0.39
15 Nov 20214.44%−0.43
29 Oct 20214.87%−0.05
15 Oct 20214.92%−0.33
30 Sep 20215.25%+1.40
15 Sep 20213.85%−0.06
31 Aug 20213.91%−0.59
13 Aug 20214.50%−0.14
30 Jul 20214.64%−0.24
15 Jul 20214.88%+0.14
30 Jun 20214.74%+0.67
15 Jun 20214.07%−0.38
28 May 20214.45%−0.16
14 May 20214.61%+0.12
30 Apr 20214.49%−0.32
15 Apr 20214.81%−0.06
31 Mar 20214.87%−1.56
15 Mar 20216.43%+0.52
26 Feb 20215.91%+0.75
12 Feb 20215.16%−0.78
29 Jan 20215.94%−1.56
15 Jan 20217.50%−0.30
31 Dec 20207.80%+0.27
15 Dec 20207.53%+1.71
30 Nov 20205.82%+0.92
13 Nov 20204.90%+0.08
30 Oct 20204.82%+3.73
15 Jul 20201.09%–

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

Frequently asked questions

How shorted is Actinium Pharmaceuticals, Inc right now?
2.25% of Actinium Pharmaceuticals, Inc's (ATNM) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 2,815th 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 ATNM'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 ATNM's days to cover?
3.45 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.