C4 Therapeutics, Inc. short interest in 2026

In 2026, C4 Therapeutics, Inc.'s disclosed short interest ran from 7.61% of shares outstanding on 15 Jan 2026 to 32.67% on 15 Sep 2026, a change of +25.06 percentage points. The year's high was 32.67% on 15 Sep 2026 and its low 7.35% on 13 Feb 2026, averaging 19.05% across 17 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 22.68 days on 15 Sep 2026. Full history: C4 Therapeutics, Inc..

Cite this page

Plain

Short position data for C4 Therapeutics, Inc. short interest in 2026: FINRA, compiled by howshorted.com, settlement date 15 Sep 2026. https://howshorted.com/us/company/cccc/2026/

Wikipedia

<ref>{{cite web |title=C4 Therapeutics, Inc. short interest in 2026 short position data |url=https://howshorted.com/us/company/cccc/2026/ |website=HowShorted |publisher=howshorted.com (data: FINRA) |date=2026-09-15 |access-date=2026-10-13}}</ref>

BibTeX

@misc{howshorted-c4-therapeutics-inc-short-interest-in-20-2026-09-15,
  title        = {C4 Therapeutics, Inc. short interest in 2026 short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/cccc/2026/}},
  note         = {Data: FINRA, settlement date 15 Sep 2026; accessed 2026-10-13},
  year         = {2026}
}

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

2026 in figures

Start of year: 7.61% (15 Jan 2026)
End of year: 32.67% (15 Sep 2026)
Change: +25.06 pp
High: 32.67% (15 Sep 2026)
Low: 7.35% (13 Feb 2026)
Average: 19.05%
Highest days to cover: 22.68 (15 Sep 2026)
SEC filings marked: 6

Every report in 2026

C4 Therapeutics, Inc. short interest in 2026
Settlement	Short interest	Days to cover	Filings since previous
15 Jan 2026	7.61%	5.79
30 Jan 2026	7.44%	3.84
13 Feb 2026	7.35%	8.19
27 Feb 2026	8.79%	3.40	10-K filed, results (8-K)
13 Mar 2026	13.97%	3.74
31 Mar 2026	16.67%	8.42
15 Apr 2026	21.71%	5.05
30 Apr 2026	21.73%	10.88
15 May 2026	19.22%	5.81	10-Q filed, results (8-K)
29 May 2026	19.58%	9.43
15 Jun 2026	20.12%	9.52
30 Jun 2026	22.61%	5.25
15 Jul 2026	21.54%	6.65
31 Jul 2026	24.73%	11.12
14 Aug 2026	27.68%	13.93	10-Q filed, results (8-K)
31 Aug 2026	30.41%	16.74
15 Sep 2026	32.67%	22.68

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.