How shorted is Perspective Therapeutics, Inc. right now?

20.60% of Perspective Therapeutics, Inc.'s (CATX) shares outstanding were reported short for settlement date 31 Jul 2026, per FINRA's consolidated short interest report.

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.

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 is Perspective Therapeutics, Inc.?

More shorted than 96% of the 2,877 ranked US companies

20.60%

of shares outstanding reported short · settlement date 31 Jul 2026

vs previous report: +0.60
5 reports (~10 weeks): +9.53

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

Cite this page

Short position data for Perspective Therapeutics, Inc.: FINRA, compiled by howshorted.com, settlement date 31 Jul 2026. https://howshorted.com/us/company/catx/

History

Settlement date	Short %	Change
31 Jul 2026	20.60%	+0.60
15 Jul 2026	20.00%	+0.05
30 Jun 2026	19.95%	+7.98
15 Jun 2026	11.97%	+0.77
29 May 2026	11.20%	+0.13
15 May 2026	11.07%	−0.34
30 Apr 2026	11.41%	−0.59
15 Apr 2026	12.00%	−0.40
31 Mar 2026	12.40%	+3.54
13 Mar 2026	8.86%	−4.11
27 Feb 2026	12.97%	+0.04
13 Feb 2026	12.93%	+0.10
30 Jan 2026	12.83%	+1.78
15 Jan 2026	11.05%	−0.44
31 Dec 2025	11.49%	0.00
15 Dec 2025	11.49%	+1.87
28 Nov 2025	9.62%	+0.58
14 Nov 2025	9.04%	+0.18
31 Oct 2025	8.86%	+0.12
15 Oct 2025	8.74%	−0.38
30 Sep 2025	9.12%	+0.14
15 Sep 2025	8.98%	+0.40
29 Aug 2025	8.58%	+0.12
15 Aug 2025	8.46%	−0.31
31 Jul 2025	8.77%	–

Frequently asked questions

How shorted is Perspective Therapeutics, Inc. right now?: 20.60% of Perspective Therapeutics, Inc.'s (CATX) shares outstanding were reported short for settlement date 31 Jul 2026, per FINRA's consolidated short interest report.
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.
Which funds are short?: US public short interest is aggregate-only: individual short sellers are not named. Only some EU markets publish named positions.