Karyopharm Therapeutics Inc. short interest in 2021

In 2021, Karyopharm Therapeutics Inc.'s disclosed short interest ran from 21.55% of shares outstanding on 15 Jan 2021 to 16.05% on 31 Dec 2021, a change of -5.50 percentage points. The year's high was 22.45% on 26 Feb 2021 and its low 16.05% on 31 Dec 2021, averaging 19.22% across 24 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 18.16 days on 30 Jul 2021. Full history: Karyopharm Therapeutics Inc..

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Plain

Short position data for Karyopharm Therapeutics Inc. short interest in 2021: FINRA, compiled by howshorted.com, settlement date 31 Dec 2021. https://howshorted.com/us/company/kpti/2021/

Wikipedia

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

BibTeX

@misc{howshorted-karyopharm-therapeutics-inc-short-intere-2021-12-31,
  title        = {Karyopharm Therapeutics Inc. short interest in 2021 short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/kpti/2021/}},
  note         = {Data: FINRA, settlement date 31 Dec 2021; accessed 2026-10-13},
  year         = {2021}
}

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2021 in figures

Start of year: 21.55% (15 Jan 2021)
End of year: 16.05% (31 Dec 2021)
Change: -5.50 pp
High: 22.45% (26 Feb 2021)
Low: 16.05% (31 Dec 2021)
Average: 19.22%
Highest days to cover: 18.16 (30 Jul 2021)
SEC filings marked: 9

Every report in 2021

Karyopharm Therapeutics Inc. short interest in 2021
Settlement	Short interest	Days to cover	Filings since previous
15 Jan 2021	21.55%	6.69	results (8-K)
29 Jan 2021	19.28%	5.09
12 Feb 2021	21.39%	4.40	results (8-K)
26 Feb 2021	22.45%	7.63	10-K filed
15 Mar 2021	20.88%	6.89
31 Mar 2021	20.74%	7.99
15 Apr 2021	21.31%	13.86
30 Apr 2021	19.81%	11.10
14 May 2021	19.79%	5.99	results (8-K), 10-Q filed
28 May 2021	18.26%	12.55
15 Jun 2021	19.23%	9.90
30 Jun 2021	20.04%	10.40
15 Jul 2021	20.03%	13.90
30 Jul 2021	19.94%	18.16
13 Aug 2021	18.59%	4.86	10-Q filed, results (8-K)
31 Aug 2021	18.45%	9.07
15 Sep 2021	17.47%	10.33
30 Sep 2021	19.12%	10.38
15 Oct 2021	17.68%	13.07
29 Oct 2021	17.36%	12.62
15 Nov 2021	17.13%	3.19	10-Q filed, results (8-K)
30 Nov 2021	16.83%	7.41
15 Dec 2021	17.85%	6.06
31 Dec 2021	16.05%	5.12

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.