How shorted is Korro Bio, Inc. right now?

9.97% of Korro Bio, Inc.'s (KRRO) 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 Korro Bio, Inc.?

More shorted than 80% of the 2,877 ranked US companies

9.97%

of shares outstanding reported short · settlement date 31 Jul 2026

vs previous report: −0.15
5 reports (~10 weeks): +1.69

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

Cite this page

Short position data for Korro Bio, Inc.: FINRA, compiled by howshorted.com, settlement date 31 Jul 2026. https://howshorted.com/us/company/krro/

History

Settlement date	Short %	Change
31 Jul 2026	9.97%	−0.15
15 Jul 2026	10.12%	−1.70
30 Jun 2026	11.82%	+2.67
15 Jun 2026	9.15%	+0.38
29 May 2026	8.77%	+0.49
15 May 2026	8.28%	+0.53
30 Apr 2026	7.75%	+0.23
15 Apr 2026	7.52%	+0.15
31 Mar 2026	7.37%	+0.31
13 Mar 2026	7.06%	−4.01
27 Feb 2026	11.07%	−0.25
13 Feb 2026	11.32%	−0.73
30 Jan 2026	12.05%	+0.46
15 Jan 2026	11.59%	−0.16
31 Dec 2025	11.75%	−0.98
15 Dec 2025	12.73%	−0.44
28 Nov 2025	13.17%	−2.13
14 Nov 2025	15.30%	+2.93
31 Oct 2025	12.37%	+1.04
15 Oct 2025	11.33%	−3.26
30 Sep 2025	14.59%	−1.15
15 Sep 2025	15.74%	+2.91
29 Aug 2025	12.83%	−0.39
15 Aug 2025	13.22%	+0.55
31 Jul 2025	12.67%	–

Frequently asked questions

How shorted is Korro Bio, Inc. right now?: 9.97% of Korro Bio, Inc.'s (KRRO) 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.