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HowShorted

How shorted is Cellectar Biosciences, Inc.? CLRB

#2,921most shorted US stockof 3,805 ranked stocks, more shorted than 23%

2.02%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.25
5 reports (~10 weeks)
+1.38
days to cover
4.57
Aggregate net short position time series for Cellectar Biosciences, 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 Cellectar Biosciences, 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 Mar 20262.12% 27 Feb 20261.08% 13 Mar 2026−1.04
13 Nov 20258.35% 31 Oct 20254.48% 14 Nov 2025−3.87
10 Oct 20253.48% 30 Sep 20254.88% 15 Oct 2025+1.40
13 May 20253.39% 30 Apr 20255.19% 15 May 2025+1.80
13 Mar 20254.85% 28 Feb 20256.34% 14 Mar 2025+1.49
18 Nov 20242.86% 15 Nov 20243.22% 29 Nov 2024+0.36
13 Aug 20248.81% 31 Jul 20247.89% 15 Aug 2024−0.92
23 Jul 20246.87% 15 Jul 20248.81% 31 Jul 2024+1.94

Fails to deliver

The SEC's fails-to-deliver figure for CLRB: 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
2
11 Sep 2026
Highest in window
32,868
3 Aug 2026
Days with a balance
104
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Cellectar Biosciences, 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 33K shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20262.02%+0.25
31 Aug 20261.77%+0.06
14 Aug 20261.71%+0.36
15 Jun 20261.35%+0.81
30 Apr 20260.54%−0.10
15 Apr 20260.64%−0.80
31 Mar 20261.44%+0.36
13 Mar 20261.08%−1.04
27 Feb 20262.12%−0.64
13 Feb 20262.76%−0.37
30 Jan 20263.13%−1.42
15 Jan 20264.55%+2.59
31 Dec 20251.96%−0.54
15 Dec 20252.50%−1.13
28 Nov 20253.63%−0.85
14 Nov 20254.48%−3.87
31 Oct 20258.35%+3.47
15 Oct 20254.88%+1.40
30 Sep 20253.48%+0.84
15 Sep 20252.64%+0.63
29 Aug 20252.01%−0.95
15 Aug 20252.96%−1.51
13 Jun 20254.47%+1.32
30 May 20253.15%−2.04
15 May 20255.19%+1.80
30 Apr 20253.39%−1.52
15 Apr 20254.91%+0.08
31 Mar 20254.83%−1.51
14 Mar 20256.34%+1.49
28 Feb 20254.85%−0.91
14 Feb 20255.76%−0.05
31 Jan 20255.81%−1.95
15 Jan 20257.76%+3.12
31 Dec 20244.64%−2.25
13 Dec 20246.89%+3.67
29 Nov 20243.22%+0.36
15 Nov 20242.86%−1.66
31 Oct 20244.52%−1.55
15 Oct 20246.07%−0.76
30 Sep 20246.83%+1.82
13 Sep 20245.01%−2.95
30 Aug 20247.96%+0.07
15 Aug 20247.89%−0.92
31 Jul 20248.81%+1.94
15 Jul 20246.87%−0.18
28 Jun 20247.05%−0.29
14 Jun 20247.34%+0.60
31 May 20246.74%−0.30
15 May 20247.04%−0.85
30 Apr 20247.89%+1.09
15 Apr 20246.80%−1.05
28 Mar 20247.85%+3.45
29 Dec 20234.40%−0.48
15 Dec 20234.88%−0.63
30 Nov 20235.51%−1.00
15 Nov 20236.51%+5.05
31 Aug 20231.46%−0.03
15 Aug 20231.49%−0.15
31 Jul 20231.64%+0.21
14 Jul 20231.43%+0.12
30 Jun 20231.31%+0.20
15 Jun 20231.11%+0.25
31 May 20230.86%+0.03
15 May 20230.83%−0.07
28 Apr 20230.90%+0.18
14 Apr 20230.72%+0.23
31 Mar 20230.49%+0.02
15 Mar 20230.47%+0.33
28 Feb 20230.14%−0.15
15 Feb 20230.29%+0.03
31 Jan 20230.26%−0.18
13 Jan 20230.44%+0.15
30 Dec 20220.29%+0.17
15 Dec 20220.12%−0.01
30 Nov 20220.13%+0.04
15 Nov 20220.09%−0.01
31 Oct 20220.10%−0.27
15 Aug 20220.37%+0.02
31 Mar 20220.35%+0.14
15 Mar 20220.21%+0.02
28 Feb 20220.19%+0.09
14 Jan 20220.10%−0.06
15 Dec 20210.16%−0.08
30 Nov 20210.24%+0.12
15 Nov 20210.12%−1.63
30 Sep 20211.75%+0.04
15 Sep 20211.71%−0.07
31 Aug 20211.78%−0.35
13 Aug 20212.13%−0.84
30 Jul 20212.97%−0.18
15 Jul 20213.15%+0.91
30 Jun 20212.24%−0.79
15 Jun 20213.03%−0.41
28 May 20213.44%+0.15
14 May 20213.29%−0.44
30 Apr 20213.73%+0.09
15 Apr 20213.64%−0.57
31 Mar 20214.21%−0.05
15 Mar 20214.26%−4.59
26 Feb 20218.85%+0.25
12 Feb 20218.60%+0.31
29 Jan 20218.29%−0.12
15 Jan 20218.41%−1.02
31 Dec 20209.43%+5.64
30 Nov 20203.79%−0.12
13 Nov 20203.91%−0.16
30 Oct 20204.07%+0.20
15 Oct 20203.87%−0.05
30 Sep 20203.92%+0.04
15 Sep 20203.88%−0.33
31 Aug 20204.21%+0.28
14 Aug 20203.93%+2.94
30 Jun 20200.99%+0.35
15 Jun 20200.64%+0.04
15 May 20200.60%−3.53
13 Mar 20204.13%−0.42
28 Feb 20204.55%+0.54
14 Feb 20204.01%+0.23
31 Jan 20203.78%+0.46
15 Jan 20203.32%+1.56
31 Dec 20191.76%−0.77
13 Dec 20192.53%−0.37
29 Nov 20192.90%+0.98
15 Nov 20191.92%+0.64
31 Oct 20191.28%+0.07
15 Oct 20191.21%−0.29
30 Sep 20191.50%−1.39
13 Sep 20192.89%−0.54
30 Aug 20193.43%−0.77
15 Aug 20194.20%−3.39
31 Jul 20197.59%−0.42
15 Jul 20198.01%+0.66
28 Jun 20197.35%−0.23
14 Jun 20197.58%+0.24
31 May 20197.34%+1.44
15 May 20195.90%+2.46
30 Apr 20193.44%−0.38
15 Apr 20193.82%−0.99
29 Mar 20194.81%−0.13
15 Mar 20194.94%−0.90
28 Feb 20195.84%+0.47
15 Feb 20195.37%−0.20
31 Jan 20195.57%+0.10
15 Jan 20195.47%+0.08
31 Dec 20185.39%−1.07
14 Dec 20186.46%−0.41
30 Nov 20186.87%−1.00
15 Nov 20187.87%−2.91
31 Oct 201810.78%−0.87
15 Oct 201811.65%+4.21
28 Sep 20187.44%+2.91
14 Sep 20184.53%+0.04
31 Aug 20184.49%−0.94
15 Aug 20185.43%−2.71
13 Jul 20188.14%+0.93
29 Jun 20187.21%+1.19
15 Jun 20186.02%+0.32
31 May 20185.70%+0.19
15 May 20185.51%−0.08
30 Apr 20185.59%−0.75
13 Apr 20186.34%0.00
29 Mar 20186.34%+0.85
15 Mar 20185.49%−1.39
28 Feb 20186.88%−0.81
15 Feb 20187.69%+0.84
31 Jan 20186.85%−0.05
12 Jan 20186.90%−0.62
29 Dec 20177.52%–

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

Frequently asked questions

How shorted is Cellectar Biosciences, Inc. right now?
2.02% of Cellectar Biosciences, Inc.'s (CLRB) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 2,921st 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 CLRB'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 CLRB's days to cover?
4.57 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.