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HowShorted

How shorted was Zogenix, Inc.? ZGNX

Zogenix, Inc. left the US market in 2022. This page is a frozen archive of its reported short interest, ending 28 Feb 2022. The ticker ZGNX no longer refers to this company and may since have been reassigned.
7.48%
of shares outstanding reported short · settlement date 28 Feb 2022
vs previous report
−8.58
5 reports (~10 weeks)
−3.04
days to cover
1.47
Aggregate net short position time series for Zogenix, 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 Zogenix, 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 Nov 202113.46% 29 Oct 202111.69% 15 Nov 2021−1.77
5 Aug 202115.03% 30 Jul 202114.17% 13 Aug 2021−0.86
6 May 202115.46% 30 Apr 202117.00% 14 May 2021+1.54
25 Feb 202116.37% 12 Feb 202116.01% 26 Feb 2021−0.36
11 Jan 202115.49% 31 Dec 202015.69% 15 Jan 2021+0.20
9 Nov 202013.65% 30 Oct 202013.32% 13 Nov 2020−0.33
5 Aug 202011.49% 31 Jul 202010.77% 14 Aug 2020−0.72
5 May 202011.34% 30 Apr 202011.46% 15 May 2020+0.12
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Sector: Healthcare · By year: 2018 · 2019 · 2020 · 2021

History

Full reported short interest history
Settlement dateShort %Change
28 Feb 20227.48%−8.58
15 Feb 202216.06%+3.79
31 Jan 202212.27%+1.27
14 Jan 202211.00%+0.98
31 Dec 202110.02%−0.50
15 Dec 202110.52%−0.80
30 Nov 202111.32%−0.37
15 Nov 202111.69%−1.77
29 Oct 202113.46%+0.64
15 Oct 202112.82%−0.18
30 Sep 202113.00%+0.26
15 Sep 202112.74%−0.73
31 Aug 202113.47%−0.70
13 Aug 202114.17%−0.86
30 Jul 202115.03%+0.62
15 Jul 202114.41%−0.10
30 Jun 202114.51%−0.67
15 Jun 202115.18%−0.74
28 May 202115.92%−1.08
14 May 202117.00%+1.54
30 Apr 202115.46%−0.03
15 Apr 202115.49%−0.83
31 Mar 202116.32%+0.52
15 Mar 202115.80%−0.21
26 Feb 202116.01%−0.36
12 Feb 202116.37%+0.38
29 Jan 202115.99%+0.30
15 Jan 202115.69%+0.20
31 Dec 202015.49%+1.33
15 Dec 202014.16%+0.92
30 Nov 202013.24%−0.08
13 Nov 202013.32%−0.33
30 Oct 202013.65%+0.92
15 Oct 202012.73%+0.67
30 Sep 202012.06%+2.28
15 Sep 20209.78%−0.09
31 Aug 20209.87%−0.90
14 Aug 202010.77%−0.72
31 Jul 202011.49%−0.88
15 Jul 202012.37%−0.88
30 Jun 202013.25%+0.15
15 Jun 202013.10%+0.59
29 May 202012.51%+1.05
15 May 202011.46%+0.12
30 Apr 202011.34%−3.25
15 Apr 202014.59%−0.36
31 Mar 202014.95%−0.96
13 Mar 202015.91%−0.26
28 Feb 202016.17%+0.06
14 Feb 202016.11%+2.26
31 Jan 202013.85%−0.77
15 Jan 202014.62%+0.46
31 Dec 201914.16%−0.58
13 Dec 201914.74%−1.70
29 Nov 201916.44%−2.29
15 Nov 201918.73%−0.04
31 Oct 201918.77%−0.88
15 Oct 201919.65%−0.50
30 Sep 201920.15%+0.53
13 Sep 201919.62%−1.17
30 Aug 201920.79%+1.73
15 Aug 201919.06%−0.68
31 Jul 201919.74%−1.96
15 Jul 201921.70%−1.02
28 Jun 201922.72%+1.45
14 Jun 201921.27%+1.50
31 May 201919.77%−1.02
15 May 201920.79%+0.27
30 Apr 201920.52%−0.02
15 Apr 201920.54%+3.17
29 Mar 201917.37%+0.85
15 Mar 201916.52%−0.27
28 Feb 201916.79%+0.19
15 Feb 201916.60%−0.35
31 Jan 201916.95%−1.06
15 Jan 201918.01%+0.38
31 Dec 201817.63%+1.61
14 Dec 201816.02%+0.01
30 Nov 201816.01%−0.20
15 Nov 201816.21%+0.80
31 Oct 201815.41%−2.65
15 Oct 201818.06%+0.42
28 Sep 201817.64%+1.82
14 Sep 201815.82%+0.85
31 Aug 201814.97%+2.42
15 Aug 201812.55%−0.41
31 Jul 201812.96%−1.17
13 Jul 201814.13%+0.54
29 Jun 201813.59%+0.25
15 Jun 201813.34%−0.04
31 May 201813.38%+0.22
15 May 201813.16%+0.75
30 Apr 201812.41%−0.17
13 Apr 201812.58%+1.78
29 Mar 201810.80%−0.22
15 Mar 201811.02%+0.03
28 Feb 201810.99%+0.11
15 Feb 201810.88%−0.10
31 Jan 201810.98%−0.24
12 Jan 201811.22%−0.18
29 Dec 201711.40%–

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

Frequently asked questions

How shorted was Zogenix, Inc.?
Zogenix, Inc. left the US market in 2022. Its final reported figure was 7.48% 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 ZGNX'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 ZGNX's days to cover?
1.47 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.