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 PBLA'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 PBLA's days to cover?

1.00 days for settlement date 15 Dec 2023: 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.

How shorted was Panbela Therapeutics, Inc.? PBLA

Panbela Therapeutics, Inc. left the US market in 2023. This page is a frozen archive of its reported short interest, ending 15 Dec 2023. The ticker PBLA no longer refers to this company and may since have been reassigned.

1.86%

of shares outstanding reported short · settlement date 15 Dec 2023

vs previous report: +1.00
5 reports (~10 weeks): −3.31
days to cover: 1.00

Markers along the chart's base: ▲ results announced (an 8-K reporting results was filed) ▲ 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.

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 filed	Settlement before	Settlement after	Change
16 Mar 2023	2.26% 15 Mar 2023	2.35% 31 Mar 2023	+0.09
15 Aug 2022	1.24% 29 Jul 2022	0.67% 31 Aug 2022	−0.57
12 May 2022	1.06% 29 Apr 2022	0.86% 13 May 2022	−0.20
24 Mar 2022	1.09% 15 Mar 2022	1.19% 31 Mar 2022	+0.10
10 Nov 2021	1.50% 29 Oct 2021	1.49% 15 Nov 2021	−0.01
11 Aug 2021	2.42% 30 Jul 2021	1.92% 13 Aug 2021	−0.50
12 May 2021	2.09% 30 Apr 2021	1.80% 14 May 2021	−0.29

Embed this chart

Paste this snippet to embed the interactive chart. It updates with each FINRA report and keeps the source attribution. Preview

<iframe src="https://howshorted.com/embed/us/pbla-2025/" width="100%" height="430" style="border:0" loading="lazy" title="Panbela Therapeutics, Inc. short interest chart"></iframe>
<p>Source: FINRA data compiled by <a href="https://howshorted.com/us/company/pbla-2025/">howshorted.com</a></p>

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Plain

Short position data for Panbela Therapeutics, Inc.: FINRA, compiled by howshorted.com, settlement date 15 Dec 2023. https://howshorted.com/us/company/pbla-2025/

Wikipedia

<ref>{{cite web |title=Panbela Therapeutics, Inc. short position data |url=https://howshorted.com/us/company/pbla-2025/ |website=HowShorted |publisher=howshorted.com (data: FINRA) |date=2023-12-15 |access-date=2026-10-13}}</ref>

BibTeX

@misc{howshorted-panbela-therapeutics-inc-2023-12-15,
  title        = {Panbela Therapeutics, Inc. short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/pbla-2025/}},
  note         = {Data: FINRA, settlement date 15 Dec 2023; accessed 2026-10-13},
  year         = {2023}
}

Sector: Healthcare

History

Full reported short interest history
Settlement date	Short %	Change
15 Dec 2023	1.86%	+1.00
30 Nov 2023	0.86%	−0.41
15 Nov 2023	1.27%	+0.62
15 Aug 2023	0.65%	−5.02
31 May 2023	5.67%	+0.50
15 May 2023	5.17%	+2.82
31 Mar 2023	2.35%	+0.09
15 Mar 2023	2.26%	+2.09
15 Nov 2022	0.17%	−1.17
15 Sep 2022	1.34%	+0.67
31 Aug 2022	0.67%	+0.06
15 Aug 2022	0.61%	−0.63
29 Jul 2022	1.24%	−0.06
15 Jul 2022	1.30%	+0.21
30 Jun 2022	1.09%	−0.05
15 Jun 2022	1.14%	+0.01
31 May 2022	1.13%	+0.27
13 May 2022	0.86%	−0.20
29 Apr 2022	1.06%	−0.17
14 Apr 2022	1.23%	+0.04
31 Mar 2022	1.19%	+0.10
15 Mar 2022	1.09%	−0.19
28 Feb 2022	1.28%	+0.23
15 Feb 2022	1.05%	−0.24
31 Jan 2022	1.29%	−0.08
14 Jan 2022	1.37%	−0.30
31 Dec 2021	1.67%	+0.27
15 Dec 2021	1.40%	−0.17
30 Nov 2021	1.57%	+0.08
15 Nov 2021	1.49%	−0.01
29 Oct 2021	1.50%	−0.03
15 Oct 2021	1.53%	+0.08
30 Sep 2021	1.45%	−0.15
15 Sep 2021	1.60%	−0.04
31 Aug 2021	1.64%	−0.28
13 Aug 2021	1.92%	−0.50
30 Jul 2021	2.42%	+0.27
15 Jul 2021	2.15%	−1.19
30 Jun 2021	3.34%	+1.54
15 Jun 2021	1.80%	−0.12
28 May 2021	1.92%	+0.12
14 May 2021	1.80%	−0.29
30 Apr 2021	2.09%	+0.32
15 Apr 2021	1.77%	−0.10
31 Mar 2021	1.87%	+1.77
30 Nov 2020	0.10%	−0.02
13 Nov 2020	0.12%	+0.12
31 Aug 2020	0.00%	–

Newest first. Scroll inside the table for earlier dates, back to 31 Aug 2020.

Frequently asked questions

How shorted was Panbela Therapeutics, Inc.?: Panbela Therapeutics, Inc. left the US market in 2023. Its final reported figure was 1.86% of shares outstanding for settlement date 15 Dec 2023, 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 PBLA'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 PBLA's days to cover?: 1.00 days for settlement date 15 Dec 2023: 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.