Phathom Pharmaceuticals, Inc. short interest in 2021

In 2021, Phathom Pharmaceuticals, Inc.'s disclosed short interest ran from 1.97% of shares outstanding on 15 Jan 2021 to 14.04% on 31 Dec 2021, a change of +12.07 percentage points. The year's high was 14.04% on 31 Dec 2021 and its low 1.44% on 26 Feb 2021, averaging 4.92% across 24 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 36.67 days on 31 Dec 2021. Full history: Phathom Pharmaceuticals, Inc..

Cite this page

Plain

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

Wikipedia

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

BibTeX

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

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

2021 in figures

Start of year: 1.97% (15 Jan 2021)
End of year: 14.04% (31 Dec 2021)
Change: +12.07 pp
High: 14.04% (31 Dec 2021)
Low: 1.44% (26 Feb 2021)
Average: 4.92%
Highest days to cover: 36.67 (31 Dec 2021)
SEC filings marked: 9

Every report in 2021

Phathom Pharmaceuticals, Inc. short interest in 2021
Settlement	Short interest	Days to cover	Filings since previous
15 Jan 2021	1.97%	5.12
29 Jan 2021	1.66%	5.22
12 Feb 2021	1.63%	6.80
26 Feb 2021	1.44%	4.18
15 Mar 2021	1.89%	6.90
31 Mar 2021	1.81%	5.83	10-K filed, results (8-K)
15 Apr 2021	1.93%	7.13
30 Apr 2021	2.23%	10.13
14 May 2021	3.11%	10.19	10-Q filed, results (8-K)
28 May 2021	3.19%	10.35
15 Jun 2021	3.30%	13.53
30 Jun 2021	3.94%	6.87
15 Jul 2021	3.96%	19.67
30 Jul 2021	4.15%	18.94
13 Aug 2021	5.05%	16.95	10-Q filed, results (8-K)
31 Aug 2021	5.10%	20.49
15 Sep 2021	4.45%	18.94
30 Sep 2021	4.82%	16.95
15 Oct 2021	5.65%	25.00
29 Oct 2021	11.33%	8.46	results (8-K)
15 Nov 2021	12.06%	17.51	10-Q filed, results (8-K)
30 Nov 2021	9.51%	16.50
15 Dec 2021	9.77%	28.35
31 Dec 2021	14.04%	36.67

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.