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HowShorted

How shorted was Y-mAbs Therapeutics, Inc.? YMAB

Y-mAbs Therapeutics, Inc. left the US market in 2025. This page is a frozen archive of its reported short interest, ending 15 Sep 2025. The ticker YMAB no longer refers to this company and may since have been reassigned.
2.35%
of shares outstanding reported short · settlement date 15 Sep 2025
vs previous report
−1.73
5 reports (~10 weeks)
−3.34
days to cover
1.67
Aggregate net short position time series for Y-mAbs Therapeutics, 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 Y-mAbs Therapeutics, 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
8 Aug 20254.93% 31 Jul 20253.66% 15 Aug 2025−1.27
13 May 20256.82% 30 Apr 20256.26% 15 May 2025−0.56
4 Mar 202510.55% 28 Feb 20259.91% 14 Mar 2025−0.64
10 Jan 20257.96% 31 Dec 20248.35% 15 Jan 2025+0.39
8 Nov 20249.01% 31 Oct 20248.11% 15 Nov 2024−0.90
12 Aug 202410.62% 31 Jul 202410.77% 15 Aug 2024+0.15
7 May 20245.65% 30 Apr 20248.63% 15 May 2024+2.98
29 Feb 20245.05% 15 Feb 20244.81% 15 Mar 2024−0.24
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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20252.35%−1.73
29 Aug 20254.08%+0.42
15 Aug 20253.66%−1.27
31 Jul 20254.93%−0.57
15 Jul 20255.50%−0.19
30 Jun 20255.69%−0.17
13 Jun 20255.86%−0.08
30 May 20255.94%−0.32
15 May 20256.26%−0.56
30 Apr 20256.82%−0.03
15 Apr 20256.85%−1.32
31 Mar 20258.17%−1.74
14 Mar 20259.91%−0.64
28 Feb 202510.55%+0.53
14 Feb 202510.02%+1.03
31 Jan 20258.99%+0.64
15 Jan 20258.35%+0.39
31 Dec 20247.96%−0.12
13 Dec 20248.08%−0.49
29 Nov 20248.57%+0.46
15 Nov 20248.11%−0.90
31 Oct 20249.01%−0.52
15 Oct 20249.53%+0.17
30 Sep 20249.36%+0.33
13 Sep 20249.03%−0.37
30 Aug 20249.40%−1.37
15 Aug 202410.77%+0.15
31 Jul 202410.62%+0.97
15 Jul 20249.65%+1.48
28 Jun 20248.17%−0.16
14 Jun 20248.33%+0.57
31 May 20247.76%−0.87
15 May 20248.63%+2.98
30 Apr 20245.65%+0.31
15 Apr 20245.34%+0.21
28 Mar 20245.13%+0.32
15 Mar 20244.81%−0.17
29 Feb 20244.98%−0.07
15 Feb 20245.05%−0.11
31 Jan 20245.16%+0.27
12 Jan 20244.89%−0.41
29 Dec 20235.30%+0.34
15 Dec 20234.96%−0.75
30 Nov 20235.71%−0.14
15 Nov 20235.85%+0.12
31 Oct 20235.73%−0.25
13 Oct 20235.98%−0.16
29 Sep 20236.14%−0.18
15 Sep 20236.32%+0.37
31 Aug 20235.95%−1.24
15 Aug 20237.19%+2.48
31 Jul 20234.71%+0.29
14 Jul 20234.42%+0.29
30 Jun 20234.13%+0.11
15 Jun 20234.02%+0.24
31 May 20233.78%−0.35
15 May 20234.13%−0.10
28 Apr 20234.23%+0.12
14 Apr 20234.11%−1.62
31 Mar 20235.73%+1.22
15 Mar 20234.51%+0.44
28 Feb 20234.07%−0.14
15 Feb 20234.21%−0.24
31 Jan 20234.45%+0.05
13 Jan 20234.40%−0.02
30 Dec 20224.42%+0.55
15 Dec 20223.87%−0.08
30 Nov 20223.95%+0.57
15 Nov 20223.38%−3.66
31 Oct 20227.04%−1.45
14 Oct 20228.49%−0.12
30 Sep 20228.61%−0.23
15 Sep 20228.84%+0.19
31 Aug 20228.65%+0.10
15 Aug 20228.55%+0.43
29 Jul 20228.12%+0.22
15 Jul 20227.90%−0.38
30 Jun 20228.28%−0.88
15 Jun 20229.16%−0.43
31 May 20229.59%+0.13
13 May 20229.46%+2.85
29 Apr 20226.61%−0.12
14 Apr 20226.73%+0.24
31 Mar 20226.49%+1.32
15 Mar 20225.17%−0.33
28 Feb 20225.50%−0.40
15 Feb 20225.90%+1.40
31 Jan 20224.50%+0.01
14 Jan 20224.49%+0.09
31 Dec 20214.40%−0.32
15 Dec 20214.72%−0.37
30 Nov 20215.09%−0.44
15 Nov 20215.53%−0.55
29 Oct 20216.08%+0.43
15 Oct 20215.65%+0.07
30 Sep 20215.58%−0.64
15 Sep 20216.22%+0.14
31 Aug 20216.08%−0.82
13 Aug 20216.90%+0.17
30 Jul 20216.73%+0.28
15 Jul 20216.45%−0.12
30 Jun 20216.57%−0.29
15 Jun 20216.86%−0.31
28 May 20217.17%−0.25
14 May 20217.42%+0.02
30 Apr 20217.40%−0.13
15 Apr 20217.53%−1.39
31 Mar 20218.92%+1.95
15 Mar 20216.97%−0.19
26 Feb 20217.16%+1.66
12 Feb 20215.50%−1.75
29 Jan 20217.25%−0.20
15 Jan 20217.45%−0.12
31 Dec 20207.57%−1.09
15 Dec 20208.66%+0.03
30 Nov 20208.63%+0.14
13 Nov 20208.49%+0.13
30 Oct 20208.36%+0.20
15 Oct 20208.16%+0.86
30 Sep 20207.30%+0.99
15 Sep 20206.31%−0.03
31 Aug 20206.34%−0.29
14 Aug 20206.63%−0.08
31 Jul 20206.71%+0.24
15 Jul 20206.47%+0.17
30 Jun 20206.30%+0.70
15 Jun 20205.60%+0.25
29 May 20205.35%−0.13
15 May 20205.48%−0.32
30 Apr 20205.80%+0.01
15 Apr 20205.79%+0.73
31 Mar 20205.06%+0.10
13 Mar 20204.96%+0.65
28 Feb 20204.31%+1.01
14 Feb 20203.30%−0.09
31 Jan 20203.39%−0.39
15 Jan 20203.78%−0.37
31 Dec 20194.15%+1.47
13 Dec 20192.68%+0.44
29 Nov 20192.24%−0.37
15 Nov 20192.61%−0.54
31 Oct 20193.15%+0.71
15 Oct 20192.44%–

Newest first. Scroll inside the table for earlier dates, back to 15 Oct 2019.

Frequently asked questions

How shorted was Y-mAbs Therapeutics, Inc.?
Y-mAbs Therapeutics, Inc. left the US market in 2025. Its final reported figure was 2.35% of shares outstanding for settlement date 15 Sep 2025, per FINRA's consolidated short interest report; this page preserves its full history.
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 YMAB'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 YMAB's days to cover?
1.67 days for settlement date 15 Sep 2025: 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.