Altimmune, Inc. short interest in 2025
In 2025, Altimmune, Inc.'s disclosed short interest ran from 34.58% of shares outstanding on 15 Jan 2025 to 24.76% on 31 Dec 2025, a change of -9.82 percentage points. The year's high was 38.45% on 30 Jun 2025 and its low 20.89% on 31 Oct 2025, averaging 28.65% across 24 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 13.78 days on 30 Apr 2025. Full history: Altimmune, Inc..
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By year: 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026
2025 in figures
- Start of year
- 34.58% (15 Jan 2025)
- End of year
- 24.76% (31 Dec 2025)
- Change
- -9.82 pp
- High
- 38.45% (30 Jun 2025)
- Low
- 20.89% (31 Oct 2025)
- Average
- 28.65%
- Highest days to cover
- 13.78 (30 Apr 2025)
- SEC filings marked
- 8
Every report in 2025
| Settlement | Short interest | Days to cover | Filings since previous |
|---|---|---|---|
| 15 Jan 2025 | 34.58% | 9.09 | |
| 31 Jan 2025 | 32.79% | 12.74 | |
| 14 Feb 2025 | 31.60% | 12.14 | |
| 28 Feb 2025 | 28.13% | 8.37 | 10-K filed, results (8-K) |
| 14 Mar 2025 | 29.15% | 5.96 | |
| 31 Mar 2025 | 28.33% | 9.41 | |
| 15 Apr 2025 | 29.14% | 9.02 | |
| 30 Apr 2025 | 29.32% | 13.78 | |
| 15 May 2025 | 27.95% | 8.12 | 10-Q filed, results (8-K) |
| 30 May 2025 | 27.10% | 10.97 | |
| 13 Jun 2025 | 30.08% | 6.01 | |
| 30 Jun 2025 | 38.45% | 1.94 | |
| 15 Jul 2025 | 34.64% | 4.33 | |
| 31 Jul 2025 | 31.76% | 7.87 | |
| 15 Aug 2025 | 28.85% | 9.15 | 10-Q filed, results (8-K) |
| 29 Aug 2025 | 30.33% | 8.59 | |
| 15 Sep 2025 | 28.42% | 13.17 | |
| 30 Sep 2025 | 29.68% | 8.70 | |
| 15 Oct 2025 | 24.36% | 7.25 | |
| 31 Oct 2025 | 20.89% | 8.70 | |
| 14 Nov 2025 | 22.33% | 7.12 | 10-Q filed, results (8-K) |
| 28 Nov 2025 | 22.21% | 7.04 | |
| 15 Dec 2025 | 22.75% | 6.24 | |
| 31 Dec 2025 | 24.76% | 4.69 |
See also: Altimmune, Inc.'s full history · most shorted US stocks of 2025 · today's US league.
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.