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HowShorted

How shorted was IGM Biosciences, Inc.? IGMS

IGM Biosciences, Inc. left the US market in 2025. This page is a frozen archive of its reported short interest, ending 31 Jul 2025. The ticker IGMS no longer refers to this company and may since have been reassigned.
0.75%
of shares outstanding reported short · settlement date 31 Jul 2025
vs previous report
+0.08
5 reports (~10 weeks)
−0.89
days to cover
1.00
Aggregate net short position time series for IGM 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 IGM 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
10 Jan 20259.89% 31 Dec 20247.72% 15 Jan 2025−2.17
8 Nov 202413.26% 31 Oct 202411.20% 15 Nov 2024−2.06
14 Aug 202422.20% 31 Jul 202422.78% 15 Aug 2024+0.58
8 May 202410.61% 30 Apr 202420.81% 15 May 2024+10.20
7 Mar 20247.72% 29 Feb 20248.09% 15 Mar 2024+0.37
8 Jan 20247.99% 29 Dec 20238.38% 12 Jan 2024+0.39
13 Nov 20238.56% 31 Oct 20237.10% 15 Nov 2023−1.46
3 Aug 20238.36% 31 Jul 20239.39% 15 Aug 2023+1.03
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Sector: Healthcare · By year: 2021 · 2022 · 2023 · 2024 · 2025

History

Full reported short interest history
Settlement dateShort %Change
31 Jul 20250.75%+0.08
15 Jul 20250.67%+0.02
30 Jun 20250.65%−0.55
13 Jun 20251.20%−0.09
30 May 20251.29%−0.35
15 May 20251.64%+0.18
30 Apr 20251.46%−0.04
15 Apr 20251.50%−0.14
31 Mar 20251.64%+0.09
14 Mar 20251.55%−0.38
28 Feb 20251.93%−2.27
14 Feb 20254.20%+0.42
31 Jan 20253.78%−3.94
15 Jan 20257.72%−2.17
31 Dec 20249.89%−0.50
13 Dec 202410.39%−0.26
29 Nov 202410.65%−0.55
15 Nov 202411.20%−2.06
31 Oct 202413.26%−1.25
15 Oct 202414.51%−1.34
30 Sep 202415.85%−4.95
13 Sep 202420.80%−1.01
30 Aug 202421.81%−0.97
15 Aug 202422.78%+0.58
31 Jul 202422.20%−0.25
15 Jul 202422.45%+1.90
28 Jun 202420.55%+0.16
14 Jun 202420.39%+0.14
31 May 202420.25%−0.56
15 May 202420.81%+10.20
30 Apr 202410.61%+1.69
15 Apr 20248.92%+0.04
28 Mar 20248.88%+0.79
15 Mar 20248.09%+0.37
29 Feb 20247.72%−0.11
15 Feb 20247.83%−0.20
31 Jan 20248.03%−0.35
12 Jan 20248.38%+0.39
29 Dec 20237.99%+0.57
15 Dec 20237.42%+0.38
30 Nov 20237.04%−0.06
15 Nov 20237.10%−1.46
31 Oct 20238.56%−0.57
13 Oct 20239.13%+0.14
29 Sep 20238.99%−0.63
15 Sep 20239.62%−0.05
31 Aug 20239.67%+0.28
15 Aug 20239.39%+1.03
31 Jul 20238.36%−3.13
14 Jul 202311.49%+0.27
30 Jun 202311.22%+0.85
15 Jun 202310.37%+0.26
31 May 202310.11%+0.48
15 May 20239.63%+0.22
28 Apr 20239.41%+0.31
14 Apr 20239.10%+0.62
31 Mar 20238.48%−0.12
15 Mar 20238.60%+0.32
28 Feb 20238.28%−0.20
15 Feb 20238.48%−0.40
31 Jan 20238.88%+0.43
13 Jan 20238.45%+0.35
30 Dec 20228.10%−0.40
15 Dec 20228.50%+0.97
30 Nov 20227.53%−0.78
15 Nov 20228.31%+0.43
31 Oct 20227.88%−0.20
14 Oct 20228.08%+0.28
30 Sep 20227.80%+0.25
15 Sep 20227.55%−0.31
31 Aug 20227.86%+0.25
15 Aug 20227.61%−0.19
29 Jul 20227.80%+0.09
15 Jul 20227.71%+0.45
30 Jun 20227.26%+0.30
15 Jun 20226.96%−0.77
31 May 20227.73%−0.52
13 May 20228.25%−3.83
29 Apr 202212.08%−1.21
14 Apr 202213.29%−0.21
31 Mar 202213.50%−0.46
15 Mar 202213.96%−0.23
28 Feb 202214.19%−0.22
15 Feb 202214.41%+0.31
31 Jan 202214.10%+0.90
14 Jan 202213.20%+0.47
31 Dec 202112.73%+1.59
15 Dec 202111.14%−0.09
30 Nov 202111.23%+0.12
15 Nov 202111.11%+0.79
29 Oct 202110.32%+0.15
15 Oct 202110.17%+0.30
30 Sep 20219.87%−0.10
15 Sep 20219.97%−0.39
31 Aug 202110.36%−0.02
13 Aug 202110.38%+1.17
30 Jul 20219.21%+0.08
15 Jul 20219.13%−0.08
30 Jun 20219.21%−0.35
15 Jun 20219.56%+0.57
28 May 20218.99%−0.32
14 May 20219.31%−0.05
30 Apr 20219.36%–

Newest first. Scroll inside the table for earlier dates, back to 30 Apr 2021.

Frequently asked questions

How shorted was IGM Biosciences, Inc.?
IGM Biosciences, Inc. left the US market in 2025. Its final reported figure was 0.75% of shares outstanding for settlement date 31 Jul 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 IGMS'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 IGMS's days to cover?
1.00 days for settlement date 31 Jul 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.