How shorted is CECO ENVIRONMENTAL CORP right now?

16.75% of CECO ENVIRONMENTAL CORP's (CECO) shares outstanding were reported short for settlement date 29 May 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 CECO ENVIRONMENTAL CORP?

16.75%

of shares outstanding reported short · settlement date 29 May 2026

vs previous report: +2.35
5 reports (~10 weeks): +7.89

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

Cite this page

Short position data for CECO ENVIRONMENTAL CORP: FINRA, compiled by howshorted.com, settlement date 29 May 2026. https://howshorted.com/us/company/ceco/

History

Settlement date	Short %	Change
29 May 2026	16.75%	+2.35
15 May 2026	14.40%	+2.52
30 Apr 2026	11.88%	+2.15
15 Apr 2026	9.73%	−0.05
31 Mar 2026	9.78%	+0.92
13 Mar 2026	8.86%	+1.90
27 Feb 2026	6.96%	+1.78
13 Feb 2026	5.18%	−0.55
30 Jan 2026	5.73%	−0.36
15 Jan 2026	6.09%	+0.08
31 Dec 2025	6.01%	−0.23
15 Dec 2025	6.24%	−0.19
28 Nov 2025	6.43%	+0.27
14 Nov 2025	6.16%	−1.34
31 Oct 2025	7.50%	+1.01
15 Oct 2025	6.49%	−0.26
30 Sep 2025	6.75%	+0.37
15 Sep 2025	6.38%	−0.27
29 Aug 2025	6.65%	+0.48
15 Aug 2025	6.17%	+0.10
31 Jul 2025	6.07%	–

Frequently asked questions

How shorted is CECO ENVIRONMENTAL CORP right now?: 16.75% of CECO ENVIRONMENTAL CORP's (CECO) shares outstanding were reported short for settlement date 29 May 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.