Phathom Pharmaceuticals, Inc. short interest in 2026

In 2026, Phathom Pharmaceuticals, Inc.'s disclosed short interest ran from 14.79% of shares outstanding on 15 Jan 2026 to 12.56% on 15 Sep 2026, a change of -2.23 percentage points. The year's high was 16.47% on 13 Feb 2026 and its low 12.21% on 30 Apr 2026, averaging 14.53% across 17 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 14.85 days on 13 Feb 2026. Full history: Phathom Pharmaceuticals, Inc..

Cite this page

Plain

Short position data for Phathom Pharmaceuticals, Inc. short interest in 2026: FINRA, compiled by howshorted.com, settlement date 15 Sep 2026. https://howshorted.com/us/company/phat/2026/

Wikipedia

<ref>{{cite web |title=Phathom Pharmaceuticals, Inc. short interest in 2026 short position data |url=https://howshorted.com/us/company/phat/2026/ |website=HowShorted |publisher=howshorted.com (data: FINRA) |date=2026-09-15 |access-date=2026-10-13}}</ref>

BibTeX

@misc{howshorted-phathom-pharmaceuticals-inc-short-intere-2026-09-15,
  title        = {Phathom Pharmaceuticals, Inc. short interest in 2026 short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/phat/2026/}},
  note         = {Data: FINRA, settlement date 15 Sep 2026; accessed 2026-10-13},
  year         = {2026}
}

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

2026 in figures

Start of year: 14.79% (15 Jan 2026)
End of year: 12.56% (15 Sep 2026)
Change: -2.23 pp
High: 16.47% (13 Feb 2026)
Low: 12.21% (30 Apr 2026)
Average: 14.53%
Highest days to cover: 14.85 (13 Feb 2026)
SEC filings marked: 7

Every report in 2026

Phathom Pharmaceuticals, Inc. short interest in 2026
Settlement	Short interest	Days to cover	Filings since previous
15 Jan 2026	14.79%	6.48	results (8-K)
30 Jan 2026	16.02%	10.88
13 Feb 2026	16.47%	14.85
27 Feb 2026	15.70%	9.81	10-K filed, results (8-K)
13 Mar 2026	16.39%	10.93
31 Mar 2026	14.95%	9.23
15 Apr 2026	13.36%	9.92
30 Apr 2026	12.21%	5.88	10-Q filed, results (8-K)
15 May 2026	12.90%	8.68
29 May 2026	12.98%	9.41
15 Jun 2026	14.00%	10.36
30 Jun 2026	15.04%	11.67
15 Jul 2026	15.20%	9.00
31 Jul 2026	16.47%	8.70	10-Q filed, results (8-K)
14 Aug 2026	14.55%	6.87
31 Aug 2026	13.38%	11.01
15 Sep 2026	12.56%	9.11

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.