Portola Pharmaceuticals, Inc. short interest in 2018

In 2018, Portola Pharmaceuticals, Inc.'s disclosed short interest ran from 6.83% of shares outstanding on 12 Jan 2018 to 24.03% on 31 Dec 2018, a change of +17.20 percentage points. The year's high was 25.42% on 15 Nov 2018 and its low 6.83% on 12 Jan 2018, averaging 15.67% across 24 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 16.35 days on 28 Sep 2018. Full history: Portola Pharmaceuticals, Inc..

Cite this page

Plain

Short position data for Portola Pharmaceuticals, Inc. short interest in 2018: FINRA, compiled by howshorted.com, settlement date 31 Dec 2018. https://howshorted.com/us/company/ptla-2021/2018/

Wikipedia

<ref>{{cite web |title=Portola Pharmaceuticals, Inc. short interest in 2018 short position data |url=https://howshorted.com/us/company/ptla-2021/2018/ |website=HowShorted |publisher=howshorted.com (data: FINRA) |date=2018-12-31 |access-date=2026-10-13}}</ref>

BibTeX

@misc{howshorted-portola-pharmaceuticals-inc-short-intere-2018-12-31,
  title        = {Portola Pharmaceuticals, Inc. short interest in 2018 short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/ptla-2021/2018/}},
  note         = {Data: FINRA, settlement date 31 Dec 2018; accessed 2026-10-13},
  year         = {2018}
}

By year: 2018 · 2019 · 2020

2018 in figures

Start of year: 6.83% (12 Jan 2018)
End of year: 24.03% (31 Dec 2018)
Change: +17.20 pp
High: 25.42% (15 Nov 2018)
Low: 6.83% (12 Jan 2018)
Average: 15.67%
Highest days to cover: 16.35 (28 Sep 2018)
SEC filings marked: 8

Every report in 2018

Portola Pharmaceuticals, Inc. short interest in 2018
Settlement	Short interest	Days to cover	Filings since previous
12 Jan 2018	6.83%	4.83
31 Jan 2018	7.58%	5.18
15 Feb 2018	7.69%	5.92
28 Feb 2018	8.26%	5.21	results (8-K)
15 Mar 2018	8.05%	2.07	10-K filed
29 Mar 2018	8.16%	4.19
13 Apr 2018	9.14%	7.98
30 Apr 2018	10.57%	7.14
15 May 2018	11.08%	2.59	results (8-K), 10-Q filed
31 May 2018	12.43%	8.00
15 Jun 2018	12.88%	6.80
29 Jun 2018	12.87%	6.34
13 Jul 2018	12.64%	14.06
31 Jul 2018	14.00%	9.24
15 Aug 2018	16.46%	4.66	10-Q filed, results (8-K)
31 Aug 2018	22.13%	8.00
14 Sep 2018	23.47%	13.95
28 Sep 2018	24.23%	16.35
15 Oct 2018	24.55%	12.90
31 Oct 2018	23.38%	9.97
15 Nov 2018	25.42%	8.18	10-Q filed, results (8-K)
30 Nov 2018	25.42%	15.02
14 Dec 2018	24.72%	9.66
31 Dec 2018	24.03%	6.70

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.