Omeros Corporation short interest in 2021

In 2021, Omeros Corporation's disclosed short interest ran from 20.04% of shares outstanding on 15 Jan 2021 to 17.47% on 31 Dec 2021, a change of -2.57 percentage points. The year's high was 22.50% on 15 Apr 2021 and its low 15.81% on 30 Sep 2021, averaging 19.19% across 24 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 41.92 days on 14 May 2021. Full history: Omeros Corporation.

Cite this page

Plain

Short position data for Omeros Corporation short interest in 2021: FINRA, compiled by howshorted.com, settlement date 31 Dec 2021. https://howshorted.com/us/company/omer/2021/

Wikipedia

<ref>{{cite web |title=Omeros Corporation short interest in 2021 short position data |url=https://howshorted.com/us/company/omer/2021/ |website=HowShorted |publisher=howshorted.com (data: FINRA) |date=2021-12-31 |access-date=2026-10-13}}</ref>

BibTeX

@misc{howshorted-omeros-corporation-short-interest-in-202-2021-12-31,
  title        = {Omeros Corporation short interest in 2021 short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/omer/2021/}},
  note         = {Data: FINRA, settlement date 31 Dec 2021; accessed 2026-10-13},
  year         = {2021}
}

By year: 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026

2021 in figures

Start of year: 20.04% (15 Jan 2021)
End of year: 17.47% (31 Dec 2021)
Change: -2.57 pp
High: 22.50% (15 Apr 2021)
Low: 15.81% (30 Sep 2021)
Average: 19.19%
Highest days to cover: 41.92 (14 May 2021)
SEC filings marked: 8

Every report in 2021

Omeros Corporation short interest in 2021
Settlement	Short interest	Days to cover	Filings since previous
15 Jan 2021	20.04%	19.16
29 Jan 2021	20.11%	13.10
12 Feb 2021	20.70%	15.99
26 Feb 2021	20.27%	22.38
15 Mar 2021	21.31%	18.16	10-K filed, results (8-K)
31 Mar 2021	21.15%	27.58
15 Apr 2021	22.50%	25.37
30 Apr 2021	21.39%	24.54
14 May 2021	21.55%	41.92	10-Q filed, results (8-K)
28 May 2021	19.65%	12.82
15 Jun 2021	19.73%	25.77
30 Jun 2021	19.23%	23.90
15 Jul 2021	18.29%	25.50
30 Jul 2021	17.80%	37.69
13 Aug 2021	17.95%	24.25	10-Q filed, results (8-K)
31 Aug 2021	17.18%	28.89
15 Sep 2021	16.62%	26.42
30 Sep 2021	15.81%	17.78
15 Oct 2021	18.13%	4.24
29 Oct 2021	18.80%	5.11
15 Nov 2021	18.36%	12.68	10-Q filed, results (8-K)
30 Nov 2021	18.80%	20.07
15 Dec 2021	17.61%	4.27
31 Dec 2021	17.47%	13.02

About this data

US short interest data: FINRA (finra.org), shown as reported shares short divided by SEC-reported shares outstanding for each settlement date. FINRA® is a registered trademark of the Financial Industry Regulatory Authority, Inc. This site is not affiliated with or endorsed by FINRA or the SEC; displayed for personal reference, bulk redistribution is not permitted (see terms). Nothing here is investment advice. Method: methodology.