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HowShorted

How shorted was OptiNose, Inc.? OPTN

OptiNose, Inc. left the US market in 2025. This page is a frozen archive of its reported short interest, ending 15 May 2025. The ticker OPTN no longer refers to this company and may since have been reassigned.
1.29%
of shares outstanding reported short · settlement date 15 May 2025
vs previous report
−0.02
5 reports (~10 weeks)
−4.39
days to cover
8.39
Aggregate net short position time series for OptiNose, 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 OptiNose, 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
12 Nov 20245.68% 31 Oct 20246.02% 15 Nov 2024+0.34
8 Aug 20244.27% 31 Jul 20244.61% 15 Aug 2024+0.34
14 May 20245.25% 30 Apr 20246.47% 15 May 2024+1.22
9 May 20245.25% 30 Apr 20246.47% 15 May 2024+1.22
25 Apr 20242.85% 15 Apr 20245.25% 30 Apr 2024+2.40
7 Mar 20242.86% 29 Feb 20242.84% 15 Mar 2024−0.02
9 Nov 20233.39% 31 Oct 20233.33% 15 Nov 2023−0.06
10 Aug 20233.41% 31 Jul 20233.40% 15 Aug 2023−0.01
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Sector: Healthcare · By year: 2019 · 2020 · 2021 · 2022 · 2023 · 2024

History

Full reported short interest history
Settlement dateShort %Change
15 May 20251.29%−0.02
30 Apr 20251.31%−0.80
13 Dec 20242.11%−2.77
29 Nov 20244.88%−1.14
15 Nov 20246.02%+0.34
31 Oct 20245.68%−0.08
15 Oct 20245.76%+0.17
30 Sep 20245.59%+0.97
13 Sep 20244.62%−0.03
30 Aug 20244.65%+0.04
15 Aug 20244.61%+0.34
31 Jul 20244.27%−0.79
15 Jul 20245.06%−1.79
28 Jun 20246.85%+1.79
14 Jun 20245.06%−1.21
31 May 20246.27%−0.20
15 May 20246.47%+1.22
30 Apr 20245.25%+2.40
15 Apr 20242.85%+0.09
28 Mar 20242.76%−0.08
15 Mar 20242.84%−0.02
29 Feb 20242.86%−0.34
15 Feb 20243.20%+0.18
31 Jan 20243.02%−0.10
12 Jan 20243.12%−0.15
29 Dec 20233.27%−0.03
15 Dec 20233.30%+0.04
30 Nov 20233.26%−0.07
15 Nov 20233.33%−0.06
31 Oct 20233.39%+0.03
13 Oct 20233.36%−0.08
29 Sep 20233.44%−0.61
15 Sep 20234.05%+0.76
31 Aug 20233.29%−0.11
15 Aug 20233.40%−0.01
31 Jul 20233.41%−0.68
14 Jul 20234.09%+0.82
30 Jun 20233.27%+1.14
15 Jun 20232.13%−0.01
31 May 20232.14%−0.02
15 May 20232.16%−0.02
28 Apr 20232.18%−0.08
14 Apr 20232.26%−0.06
31 Mar 20232.32%+0.11
15 Mar 20232.21%−0.83
28 Feb 20233.04%+0.02
15 Feb 20233.02%−0.13
31 Jan 20233.15%−0.16
13 Jan 20233.31%+0.20
30 Dec 20223.11%−0.20
15 Dec 20223.31%+0.46
30 Nov 20222.85%−0.14
15 Nov 20222.99%−0.19
31 Oct 20223.18%+0.06
14 Oct 20223.12%+0.05
30 Sep 20223.07%+0.59
15 Sep 20222.48%−0.02
31 Aug 20222.50%+0.03
15 Aug 20222.47%−0.06
29 Jul 20222.53%0.00
15 Jul 20222.53%−0.08
30 Jun 20222.61%+0.06
15 Jun 20222.55%+0.15
31 May 20222.40%−0.03
13 May 20222.43%−0.56
29 Apr 20222.99%0.00
14 Apr 20222.99%−0.10
31 Mar 20223.09%+0.44
15 Mar 20222.65%+0.44
28 Feb 20222.21%−0.36
15 Feb 20222.57%+0.05
31 Jan 20222.52%−0.18
14 Jan 20222.70%−0.12
31 Dec 20212.82%−0.22
15 Dec 20213.04%−0.05
30 Nov 20213.09%−2.24
15 Nov 20215.33%−0.01
29 Oct 20215.34%+0.21
15 Oct 20215.13%−0.59
30 Sep 20215.72%−0.19
15 Sep 20215.91%+0.31
31 Aug 20215.60%−1.83
13 Aug 20217.43%−0.61
30 Jul 20218.04%+0.20
15 Jul 20217.84%+0.17
30 Jun 20217.67%−1.90
15 Jun 20219.57%−0.24
28 May 20219.81%+0.31
14 May 20219.50%+0.49
30 Apr 20219.01%+0.45
15 Apr 20218.56%+0.35
31 Mar 20218.21%−0.05
15 Mar 20218.26%−0.91
26 Feb 20219.17%+0.11
12 Feb 20219.06%+2.26
29 Jan 20216.80%−3.58
15 Jan 202110.38%+0.11
31 Dec 202010.27%−3.17
15 Dec 202013.44%+0.36
30 Nov 202013.08%+2.48
13 Nov 202010.60%−2.50
30 Oct 202013.10%−1.47
15 Oct 202014.57%−0.50
30 Sep 202015.07%−1.26
15 Sep 202016.33%−0.29
31 Aug 202016.62%+2.18
14 Aug 202014.44%−1.87
31 Jul 202016.31%+0.86
15 Jul 202015.45%+1.05
30 Jun 202014.40%+1.69
15 Jun 202012.71%+0.54
29 May 202012.17%−1.10
15 May 202013.27%+0.08
30 Apr 202013.19%−0.71
15 Apr 202013.90%−1.03
31 Mar 202014.93%−1.23
13 Mar 202016.16%−2.49
28 Feb 202018.65%−0.22
14 Feb 202018.87%−0.29
31 Jan 202019.16%−0.04
15 Jan 202019.20%−2.27
31 Dec 201921.47%−0.58
13 Dec 201922.05%−0.06
29 Nov 201922.11%−0.61
15 Nov 201922.72%−0.84
31 Oct 201923.56%+0.83
15 Oct 201922.73%–

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

Frequently asked questions

How shorted was OptiNose, Inc.?
OptiNose, Inc. left the US market in 2025. Its final reported figure was 1.29% of shares outstanding for settlement date 15 May 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 OPTN'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 OPTN's days to cover?
8.39 days for settlement date 15 May 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.