PTC Therapeutics, Inc. short interest in 2020

In 2020, PTC Therapeutics, Inc.'s disclosed short interest ran from 5.43% of shares outstanding on 15 Jan 2020 to 6.92% on 31 Dec 2020, a change of +1.49 percentage points. The year's high was 9.28% on 14 Aug 2020 and its low 5.43% on 15 Jan 2020, averaging 7.15% across 24 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 14.21 days on 30 Oct 2020. Full history: PTC Therapeutics, Inc..

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Plain

Short position data for PTC Therapeutics, Inc. short interest in 2020: FINRA, compiled by howshorted.com, settlement date 31 Dec 2020. https://howshorted.com/us/company/ptct/2020/

Wikipedia

<ref>{{cite web |title=PTC Therapeutics, Inc. short interest in 2020 short position data |url=https://howshorted.com/us/company/ptct/2020/ |website=HowShorted |publisher=howshorted.com (data: FINRA) |date=2020-12-31 |access-date=2026-10-13}}</ref>

BibTeX

@misc{howshorted-ptc-therapeutics-inc-short-interest-in-2-2020-12-31,
  title        = {PTC Therapeutics, Inc. short interest in 2020 short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/ptct/2020/}},
  note         = {Data: FINRA, settlement date 31 Dec 2020; accessed 2026-10-13},
  year         = {2020}
}

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2020 in figures

Start of year: 5.43% (15 Jan 2020)
End of year: 6.92% (31 Dec 2020)
Change: +1.49 pp
High: 9.28% (14 Aug 2020)
Low: 5.43% (15 Jan 2020)
Average: 7.15%
Highest days to cover: 14.21 (30 Oct 2020)
SEC filings marked: 9

Every report in 2020

PTC Therapeutics, Inc. short interest in 2020
Settlement	Short interest	Days to cover	Filings since previous
15 Jan 2020	5.43%	4.97	results (8-K)
31 Jan 2020	5.60%	4.85
14 Feb 2020	5.64%	3.28
28 Feb 2020	6.07%	3.85
13 Mar 2020	6.55%	3.77	10-K filed, results (8-K)
31 Mar 2020	7.30%	4.11
15 Apr 2020	7.05%	7.24
30 Apr 2020	6.41%	5.65	10-Q filed, results (8-K)
15 May 2020	7.10%	6.29
29 May 2020	7.00%	10.24
15 Jun 2020	7.77%	7.85
30 Jun 2020	8.35%	7.64
15 Jul 2020	8.70%	9.92
31 Jul 2020	8.17%	6.78
14 Aug 2020	9.28%	4.46	10-Q filed, results (8-K)
31 Aug 2020	8.42%	13.74
15 Sep 2020	7.33%	10.88
30 Sep 2020	7.64%	12.53
15 Oct 2020	7.38%	12.60
30 Oct 2020	6.61%	14.21	10-Q filed, results (8-K)
13 Nov 2020	6.87%	9.72
30 Nov 2020	6.83%	13.76
15 Dec 2020	7.20%	9.30
31 Dec 2020	6.92%	11.30

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.