Paratek Pharmaceuticals, Inc. short interest in 2021

In 2021, Paratek Pharmaceuticals, Inc.'s disclosed short interest ran from 8.92% of shares outstanding on 15 Jan 2021 to 7.49% on 31 Dec 2021, a change of -1.43 percentage points. The year's high was 9.80% on 26 Feb 2021 and its low 6.56% on 15 Dec 2021, averaging 8.64% across 24 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 18.56 days on 14 May 2021. Full history: Paratek Pharmaceuticals, Inc..

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Plain

Short position data for Paratek Pharmaceuticals, Inc. short interest in 2021: FINRA, compiled by howshorted.com, settlement date 31 Dec 2021. https://howshorted.com/us/company/prtk-2023/2021/

Wikipedia

<ref>{{cite web |title=Paratek Pharmaceuticals, Inc. short interest in 2021 short position data |url=https://howshorted.com/us/company/prtk-2023/2021/ |website=HowShorted |publisher=howshorted.com (data: FINRA) |date=2021-12-31 |access-date=2026-10-13}}</ref>

BibTeX

@misc{howshorted-paratek-pharmaceuticals-inc-short-intere-2021-12-31,
  title        = {Paratek Pharmaceuticals, Inc. short interest in 2021 short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/prtk-2023/2021/}},
  note         = {Data: FINRA, settlement date 31 Dec 2021; accessed 2026-10-13},
  year         = {2021}
}

By year: 2019 · 2020 · 2021 · 2022 · 2023

2021 in figures

Start of year: 8.92% (15 Jan 2021)
End of year: 7.49% (31 Dec 2021)
Change: -1.43 pp
High: 9.80% (26 Feb 2021)
Low: 6.56% (15 Dec 2021)
Average: 8.64%
Highest days to cover: 18.56 (14 May 2021)
SEC filings marked: 4

Every report in 2021

Paratek Pharmaceuticals, Inc. short interest in 2021
Settlement	Short interest	Days to cover	Filings since previous
15 Jan 2021	8.92%	12.63
29 Jan 2021	8.82%	13.50
12 Feb 2021	9.64%	7.44
26 Feb 2021	9.80%	10.50
15 Mar 2021	9.75%	11.76
31 Mar 2021	9.33%	16.15	10-K filed
15 Apr 2021	9.00%	4.97
30 Apr 2021	9.35%	16.22
14 May 2021	9.08%	18.56
28 May 2021	9.01%	15.65	10-Q filed
15 Jun 2021	9.36%	5.06
30 Jun 2021	8.81%	3.85
15 Jul 2021	8.72%	9.05
30 Jul 2021	8.98%	13.22
13 Aug 2021	9.07%	7.95	10-Q filed
31 Aug 2021	9.45%	8.39
15 Sep 2021	9.22%	13.38
30 Sep 2021	8.26%	9.28
15 Oct 2021	7.64%	15.88
29 Oct 2021	7.14%	12.78
15 Nov 2021	7.13%	12.94	10-Q filed
30 Nov 2021	6.84%	12.05
15 Dec 2021	6.56%	12.87
31 Dec 2021	7.49%	11.69

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.