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HowShorted

How shorted was ARENA PHARMACEUTICALS INC? ARNA

ARENA PHARMACEUTICALS INC left the US market in 2022. This page is a frozen archive of its reported short interest, ending 28 Feb 2022. The ticker ARNA no longer refers to this company and may since have been reassigned.
9.77%
of shares outstanding reported short · settlement date 28 Feb 2022
vs previous report
+1.44
5 reports (~10 weeks)
+6.79
days to cover
7.91
Aggregate net short position time series for ARENA 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 ARENA PHARMACEUTICALS 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
23 Feb 20228.33% 15 Feb 20229.77% 28 Feb 2022+1.44
4 Nov 20213.48% 29 Oct 20212.92% 15 Nov 2021−0.56
5 Aug 20214.65% 30 Jul 20213.77% 13 Aug 2021−0.88
5 May 20216.00% 30 Apr 20215.36% 14 May 2021−0.64
23 Feb 20215.88% 12 Feb 20215.98% 26 Feb 2021+0.10
9 Nov 20206.29% 30 Oct 20205.75% 13 Nov 2020−0.54
5 Aug 20206.81% 31 Jul 20207.09% 14 Aug 2020+0.28
7 May 20207.99% 30 Apr 20208.40% 15 May 2020+0.41
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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
28 Feb 20229.77%+1.44
15 Feb 20228.33%−0.01
31 Jan 20228.34%+3.33
14 Jan 20225.01%+2.52
31 Dec 20212.49%−0.49
15 Dec 20212.98%−0.06
30 Nov 20213.04%+0.12
15 Nov 20212.92%−0.56
29 Oct 20213.48%−0.19
15 Oct 20213.67%−0.38
30 Sep 20214.05%+0.21
15 Sep 20213.84%−0.02
31 Aug 20213.86%+0.09
13 Aug 20213.77%−0.88
30 Jul 20214.65%−0.20
15 Jul 20214.85%−0.80
30 Jun 20215.65%+0.37
15 Jun 20215.28%0.00
28 May 20215.28%−0.08
14 May 20215.36%−0.64
30 Apr 20216.00%−0.33
15 Apr 20216.33%−0.18
31 Mar 20216.51%−0.40
15 Mar 20216.91%+0.93
26 Feb 20215.98%+0.10
12 Feb 20215.88%+0.16
29 Jan 20215.72%−0.55
15 Jan 20216.27%−0.28
31 Dec 20206.55%+0.42
15 Dec 20206.13%+0.06
30 Nov 20206.07%+0.32
13 Nov 20205.75%−0.54
30 Oct 20206.29%+0.01
15 Oct 20206.28%−0.02
30 Sep 20206.30%−0.13
15 Sep 20206.43%−0.25
31 Aug 20206.68%−0.41
14 Aug 20207.09%+0.28
31 Jul 20206.81%−1.43
15 Jul 20208.24%−0.51
30 Jun 20208.75%+0.98
15 Jun 20207.77%−0.45
29 May 20208.22%−0.18
15 May 20208.40%+0.41
30 Apr 20207.99%−0.46
15 Apr 20208.45%+0.02
31 Mar 20208.43%+0.94
13 Mar 20207.49%+0.63
28 Feb 20206.86%−0.04
14 Feb 20206.90%+0.22
31 Jan 20206.68%+0.37
15 Jan 20206.31%+0.64
31 Dec 20195.67%−0.15
13 Dec 20195.82%−0.16
29 Nov 20195.98%+0.07
15 Nov 20195.91%+0.28
31 Oct 20195.63%−0.06
15 Oct 20195.69%−0.75
30 Sep 20196.44%+0.32
13 Sep 20196.12%−0.20
30 Aug 20196.32%−0.40
15 Aug 20196.72%+0.31
31 Jul 20196.41%−0.50
15 Jul 20196.91%+0.28
28 Jun 20196.63%−0.73
14 Jun 20197.36%−0.40
31 May 20197.76%+0.23
15 May 20197.53%+0.07
30 Apr 20197.46%+0.14
15 Apr 20197.32%+0.32
29 Mar 20197.00%+0.04
15 Mar 20196.96%−0.22
28 Feb 20197.18%+0.33
15 Feb 20196.85%+0.29
31 Jan 20196.56%−0.04
15 Jan 20196.60%+0.33
31 Dec 20186.27%+0.44
14 Dec 20185.83%−0.72
30 Nov 20186.55%+0.15
15 Nov 20186.40%−0.30
31 Oct 20186.70%+0.21
15 Oct 20186.49%−0.09
28 Sep 20186.58%+0.33
14 Sep 20186.25%+0.50
31 Aug 20185.75%−0.35
15 Aug 20186.10%−1.34
31 Jul 20187.44%−0.93
13 Jul 20188.37%−0.36
29 Jun 20188.73%+0.66
15 Jun 20188.07%+0.73
31 May 20187.34%−0.20
15 May 20187.54%−2.08
30 Apr 20189.62%+0.20
13 Apr 20189.42%+1.32
29 Mar 20188.10%+3.38
15 Mar 20184.72%−0.30
28 Feb 20185.02%−0.38
15 Feb 20185.40%+0.69
31 Jan 20184.71%−0.87
12 Jan 20185.58%+0.54
29 Dec 20175.04%–

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

Frequently asked questions

How shorted was ARENA PHARMACEUTICALS INC?
ARENA PHARMACEUTICALS INC left the US market in 2022. Its final reported figure was 9.77% of shares outstanding for settlement date 28 Feb 2022, 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 ARNA'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 ARNA's days to cover?
7.91 days for settlement date 28 Feb 2022: 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.