PACIFIC BIOSCIENCES OF CALIFORNIA, INC. short interest in 2025
In 2025, PACIFIC BIOSCIENCES OF CALIFORNIA, INC.'s disclosed short interest ran from 22.11% of shares outstanding on 15 Jan 2025 to 11.26% on 31 Dec 2025, a change of -10.85 percentage points. The year's high was 24.35% on 14 Feb 2025 and its low 10.77% on 31 Oct 2025, averaging 15.82% across 24 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 8.77 days on 15 Sep 2025. Full history: PACIFIC BIOSCIENCES OF CALIFORNIA, INC..
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By year: 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026
2025 in figures
- Start of year
- 22.11% (15 Jan 2025)
- End of year
- 11.26% (31 Dec 2025)
- Change
- -10.85 pp
- High
- 24.35% (14 Feb 2025)
- Low
- 10.77% (31 Oct 2025)
- Average
- 15.82%
- Highest days to cover
- 8.77 (15 Sep 2025)
- SEC filings marked
- 10
Every report in 2025
| Settlement | Short interest | Days to cover | Filings since previous |
|---|---|---|---|
| 15 Jan 2025 | 22.11% | 5.58 | results (8-K) |
| 31 Jan 2025 | 22.05% | 5.97 | |
| 14 Feb 2025 | 24.35% | 4.13 | results (8-K) |
| 28 Feb 2025 | 22.63% | 4.59 | |
| 14 Mar 2025 | 19.50% | 5.31 | |
| 31 Mar 2025 | 19.94% | 7.28 | 10-K filed |
| 15 Apr 2025 | 17.23% | 4.90 | results (8-K) |
| 30 Apr 2025 | 16.40% | 7.35 | |
| 15 May 2025 | 18.98% | 7.18 | results (8-K), 10-Q filed |
| 30 May 2025 | 17.33% | 4.60 | |
| 13 Jun 2025 | 13.21% | 4.98 | |
| 30 Jun 2025 | 15.78% | 4.24 | |
| 15 Jul 2025 | 14.79% | 5.36 | |
| 31 Jul 2025 | 13.94% | 4.89 | |
| 15 Aug 2025 | 14.04% | 4.44 | 10-Q filed, results (8-K) |
| 29 Aug 2025 | 12.36% | 8.32 | |
| 15 Sep 2025 | 15.16% | 8.77 | |
| 30 Sep 2025 | 12.64% | 5.81 | |
| 15 Oct 2025 | 11.49% | 4.11 | |
| 31 Oct 2025 | 10.77% | 2.86 | |
| 14 Nov 2025 | 11.12% | 3.62 | results (8-K), 10-Q filed |
| 28 Nov 2025 | 11.28% | 3.08 | |
| 15 Dec 2025 | 11.35% | 5.45 | |
| 31 Dec 2025 | 11.26% | 5.31 |
See also: PACIFIC BIOSCIENCES OF CALIFORNIA, 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.