PTC Therapeutics, Inc. short interest in 2018

In 2018, PTC Therapeutics, Inc.'s disclosed short interest ran from 15.77% of shares outstanding on 12 Jan 2018 to 7.64% on 31 Dec 2018, a change of -8.13 percentage points. The year's high was 16.18% on 31 Jan 2018 and its low 6.95% on 15 Aug 2018, averaging 9.87% across 24 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 9.32 days on 15 Feb 2018. Full history: PTC Therapeutics, Inc..

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Plain

Short position data for PTC Therapeutics, Inc. short interest in 2018: FINRA, compiled by howshorted.com, settlement date 31 Dec 2018. https://howshorted.com/us/company/ptct/2018/

Wikipedia

<ref>{{cite web |title=PTC Therapeutics, Inc. short interest in 2018 short position data |url=https://howshorted.com/us/company/ptct/2018/ |website=HowShorted |publisher=howshorted.com (data: FINRA) |date=2018-12-31 |access-date=2026-10-13}}</ref>

BibTeX

@misc{howshorted-ptc-therapeutics-inc-short-interest-in-2-2018-12-31,
  title        = {PTC Therapeutics, Inc. short interest in 2018 short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/ptct/2018/}},
  note         = {Data: FINRA, settlement date 31 Dec 2018; accessed 2026-10-13},
  year         = {2018}
}

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2018 in figures

Start of year: 15.77% (12 Jan 2018)
End of year: 7.64% (31 Dec 2018)
Change: -8.13 pp
High: 16.18% (31 Jan 2018)
Low: 6.95% (15 Aug 2018)
Average: 9.87%
Highest days to cover: 9.32 (15 Feb 2018)
SEC filings marked: 9

Every report in 2018

PTC Therapeutics, Inc. short interest in 2018
Settlement	Short interest	Days to cover	Filings since previous
12 Jan 2018	15.77%	5.00	results (8-K)
31 Jan 2018	16.18%	5.39
15 Feb 2018	15.76%	9.32
28 Feb 2018	14.69%	7.61
15 Mar 2018	14.76%	6.68	10-K filed, results (8-K)
29 Mar 2018	13.21%	3.95
13 Apr 2018	10.19%	4.88
30 Apr 2018	9.30%	5.60
15 May 2018	8.32%	4.01	10-Q filed, results (8-K)
31 May 2018	8.62%	4.97
15 Jun 2018	9.06%	4.67
29 Jun 2018	7.57%	1.00
13 Jul 2018	7.72%	4.97
31 Jul 2018	7.40%	3.19
15 Aug 2018	6.95%	4.26	10-Q filed, results (8-K)
31 Aug 2018	7.31%	4.02
14 Sep 2018	7.51%	3.21
28 Sep 2018	7.95%	3.79
15 Oct 2018	8.69%	3.88
31 Oct 2018	8.08%	6.32
15 Nov 2018	8.22%	4.74	10-Q filed, results (8-K)
30 Nov 2018	8.43%	6.89
14 Dec 2018	7.66%	6.24
31 Dec 2018	7.64%	5.26

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.