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How shorted was ALPINE IMMUNE SCIENCES, INC.? ALPN

ALPINE IMMUNE SCIENCES, INC. left the US market in 2024. This page is a frozen archive of its reported short interest, ending 15 May 2024. The ticker ALPN no longer refers to this company and may since have been reassigned.
3.73%
of shares outstanding reported short · settlement date 15 May 2024
vs previous report
−2.20
5 reports (~10 weeks)
−3.89
days to cover
1.34
Aggregate net short position time series for ALPINE IMMUNE SCIENCES, 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 ALPINE IMMUNE SCIENCES, 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
9 May 20245.93% 30 Apr 20243.73% 15 May 2024−2.20
18 Mar 20249.66% 15 Mar 20249.10% 28 Mar 2024−0.56
14 Nov 20235.85% 31 Oct 20237.49% 15 Nov 2023+1.64
6 Nov 20235.85% 31 Oct 20237.49% 15 Nov 2023+1.64
14 Aug 20233.12% 31 Jul 20233.99% 15 Aug 2023+0.87
11 May 20232.22% 28 Apr 20232.41% 15 May 2023+0.19
23 Mar 20231.87% 15 Mar 20232.20% 31 Mar 2023+0.33
14 Nov 20226.20% 31 Oct 20224.60% 15 Nov 2022−1.60
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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 May 20243.73%−2.20
30 Apr 20245.93%−1.30
15 Apr 20247.23%−1.87
28 Mar 20249.10%−0.56
15 Mar 20249.66%+2.04
29 Feb 20247.62%+0.68
15 Feb 20246.94%+1.19
31 Jan 20245.75%+1.61
12 Jan 20244.14%−2.71
29 Dec 20236.85%+1.69
15 Dec 20235.16%−0.55
30 Nov 20235.71%−1.78
15 Nov 20237.49%+1.64
31 Oct 20235.85%+1.40
13 Oct 20234.45%−1.24
29 Sep 20235.69%+0.36
15 Sep 20235.33%+0.21
31 Aug 20235.12%+1.13
15 Aug 20233.99%+0.87
31 Jul 20233.12%+0.02
14 Jul 20233.10%−0.10
30 Jun 20233.20%+0.66
15 Jun 20232.54%+0.04
31 May 20232.50%+0.09
15 May 20232.41%+0.19
28 Apr 20232.22%+0.05
14 Apr 20232.17%−0.03
31 Mar 20232.20%+0.33
15 Mar 20231.87%−3.21
30 Dec 20225.08%−0.02
15 Dec 20225.10%+0.30
30 Nov 20224.80%+0.20
15 Nov 20224.60%−1.60
31 Oct 20226.20%+0.15
14 Oct 20226.05%+0.70
30 Sep 20225.35%+0.85
15 Sep 20224.50%−0.10
31 Aug 20224.60%0.00
15 Aug 20224.60%+0.01
29 Jul 20224.59%−0.04
15 Jul 20224.63%+0.04
30 Jun 20224.59%−0.28
15 Jun 20224.87%+0.19
31 May 20224.68%0.00
13 May 20224.68%−0.05
29 Apr 20224.73%+0.33
14 Apr 20224.40%−0.08
31 Mar 20224.48%−0.10
15 Mar 20224.58%−0.12
28 Feb 20224.70%+0.85
15 Feb 20223.85%+0.17
31 Jan 20223.68%+0.06
14 Jan 20223.62%+0.12
31 Dec 20213.50%+1.90
15 Dec 20211.60%+0.31
30 Nov 20211.29%−0.10
15 Nov 20211.39%+0.02
29 Oct 20211.37%−0.38
15 Oct 20211.75%−0.23
30 Sep 20211.98%−0.76
15 Sep 20212.74%−0.47
31 Aug 20213.21%−0.14
13 Aug 20213.35%+0.06
30 Jul 20213.29%+0.05
15 Jul 20213.24%−0.32
30 Jun 20213.56%+1.14
15 Jun 20212.42%−0.16
28 May 20212.58%−0.06
14 May 20212.64%+0.02
30 Apr 20212.62%+0.10
15 Apr 20212.52%−0.18
31 Mar 20212.70%+0.41
15 Mar 20212.29%+2.07
31 Dec 20200.22%+0.10
15 Dec 20200.12%+0.01
30 Nov 20200.11%0.00
13 Nov 20200.11%+0.08
15 Sep 20200.03%−0.05
14 Aug 20200.08%+0.05
15 Jul 20200.03%−0.04
15 Jun 20200.07%+0.04
29 May 20200.03%−0.02
15 May 20200.05%+0.02
30 Apr 20200.03%−0.01
15 Apr 20200.04%0.00
31 Mar 20200.04%+0.02
13 Mar 20200.02%−0.03
28 Feb 20200.05%+0.02
14 Feb 20200.03%−0.02
31 Jan 20200.05%−0.08
15 Jan 20200.13%+0.02
31 Dec 20190.11%+0.01
13 Dec 20190.10%+0.03
29 Nov 20190.07%−0.02
15 Nov 20190.09%−0.06
31 Oct 20190.15%+0.07
15 Oct 20190.08%–

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

Frequently asked questions

How shorted was ALPINE IMMUNE SCIENCES, INC.?
ALPINE IMMUNE SCIENCES, INC. left the US market in 2024. Its final reported figure was 3.73% of shares outstanding for settlement date 15 May 2024, 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 ALPN'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 ALPN's days to cover?
1.34 days for settlement date 15 May 2024: 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.