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HowShorted

How shorted was Portola Pharmaceuticals, Inc.? PTLA

Portola Pharmaceuticals, Inc. left the US market in 2020. This page is a frozen archive of its reported short interest, ending 30 Jun 2020. The ticker PTLA no longer refers to this company and may since have been reassigned.
13.21%
of shares outstanding reported short ยท settlement date 30 Jun 2020
vs previous report
โˆ’3.29
5 reports (~10 weeks)
โˆ’9.99
days to cover
6.67
Aggregate net short position time series for Portola Pharmaceuticals, Inc.

Markers along the chart's base: โ–ฒ results announced (an 8-K reporting results was filed) โ–ฒ quarterly or annual report filed. Dates are SEC filing dates; hover a point to see events since the previous settlement.

Days to cover

FINRA's own figure: reported shares short divided by the stock's average daily trading volume, published alongside each settlement. It expresses the short position in days of typical trading rather than as a percentage of the company; the two can move differently.

Aggregate net short position time series for Portola Pharmaceuticals, Inc. days to cover

Short interest around results

For each results announcement (an 8-K reporting results, by its SEC filing date), the FINRA settlement before it and the first one after. Settlements fall twice a month, so the two figures can sit up to a month apart and much else changes in between: this shows what was reported, not why.

Reported short interest before and after each results announcement
Results filedSettlement beforeSettlement afterChange
11 May 202023.31% 30 Apr 202014.18% 15 May 2020โˆ’9.13
26 Feb 202022.54% 14 Feb 202022.64% 28 Feb 2020+0.10
9 Jan 202019.52% 31 Dec 201919.91% 15 Jan 2020+0.39
5 Nov 201922.92% 31 Oct 201919.15% 15 Nov 2019โˆ’3.77
7 Aug 201923.02% 31 Jul 201924.26% 15 Aug 2019+1.24
8 May 201918.64% 30 Apr 201918.24% 15 May 2019โˆ’0.40
1 Mar 201922.93% 28 Feb 201923.27% 15 Mar 2019+0.34
8 Jan 201924.03% 31 Dec 201828.32% 15 Jan 2019+4.29
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Sector: Healthcare ยท By year: 2018 ยท 2019 ยท 2020

History

Full reported short interest history
Settlement dateShort %Change
30 Jun 202013.21%โˆ’3.29
15 Jun 202016.50%โˆ’0.94
29 May 202017.44%+3.26
15 May 202014.18%โˆ’9.13
30 Apr 202023.31%+0.11
15 Apr 202023.20%โˆ’0.30
31 Mar 202023.50%+0.07
13 Mar 202023.43%+0.79
28 Feb 202022.64%+0.10
14 Feb 202022.54%+0.33
31 Jan 202022.21%+2.30
15 Jan 202019.91%+0.39
31 Dec 201919.52%+1.63
13 Dec 201917.89%โˆ’0.36
29 Nov 201918.25%โˆ’0.90
15 Nov 201919.15%โˆ’3.77
31 Oct 201922.92%+0.09
15 Oct 201922.83%โˆ’0.23
30 Sep 201923.06%โˆ’0.12
13 Sep 201923.18%+1.29
30 Aug 201921.89%โˆ’2.37
15 Aug 201924.26%+1.24
31 Jul 201923.02%+1.16
15 Jul 201921.86%+1.10
28 Jun 201920.76%+0.57
14 Jun 201920.19%+1.45
31 May 201918.74%+0.50
15 May 201918.24%โˆ’0.40
30 Apr 201918.64%โˆ’0.07
15 Apr 201918.71%โˆ’2.65
29 Mar 201921.36%โˆ’1.91
15 Mar 201923.27%+0.34
28 Feb 201922.93%โˆ’2.39
15 Feb 201925.32%โˆ’2.51
31 Jan 201927.83%โˆ’0.49
15 Jan 201928.32%+4.29
31 Dec 201824.03%โˆ’0.69
14 Dec 201824.72%โˆ’0.70
30 Nov 201825.42%0.00
15 Nov 201825.42%+2.04
31 Oct 201823.38%โˆ’1.17
15 Oct 201824.55%+0.32
28 Sep 201824.23%+0.76
14 Sep 201823.47%+1.34
31 Aug 201822.13%+5.67
15 Aug 201816.46%+2.46
31 Jul 201814.00%+1.36
13 Jul 201812.64%โˆ’0.23
29 Jun 201812.87%โˆ’0.01
15 Jun 201812.88%+0.45
31 May 201812.43%+1.35
15 May 201811.08%+0.51
30 Apr 201810.57%+1.43
13 Apr 20189.14%+0.98
29 Mar 20188.16%+0.11
15 Mar 20188.05%โˆ’0.21
28 Feb 20188.26%+0.57
15 Feb 20187.69%+0.11
31 Jan 20187.58%+0.75
12 Jan 20186.83%+0.85
29 Dec 20175.98%โ€“

Newest first. Scroll inside the table for earlier dates, back to 29 Dec 2017.

Frequently asked questions

How shorted was Portola Pharmaceuticals, Inc.?
Portola Pharmaceuticals, Inc. left the US market in 2020. Its final reported figure was 13.21% of shares outstanding for settlement date 30 Jun 2020, per FINRA's consolidated short interest report; this page preserves its full history.
What does this number include?
FINRA member firms must report their short positions in all US equities twice a month; FINRA consolidates them per security. We divide that official share count by the company's shares outstanding from its SEC filings. This is the regulatory figure, not a daily estimate.
Why does it only update twice a month?
US short interest is reported for settlement on the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. That cadence is set by regulation; no daily official figure exists.
Is this PTLA's short float?
No. This is short interest as a percentage of shares outstanding, the count in the company's SEC filings. "Short float" divides the same FINRA short count by the public float, which excludes closely held shares, so it comes out higher for the same company. We publish no float estimates: the float is not a regulatory figure.
What is PTLA's days to cover?
6.67 days for settlement date 30 Jun 2020: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume. It is published in the same FINRA file and shown verbatim; we hold no volume data ourselves.
Which funds are short?
US public short interest is aggregate-only: individual short sellers are not named. Only some EU markets publish named positions.