Iron Mountain Inc. short interest in 2026

In 2026, Iron Mountain Inc.'s disclosed short interest ran from 3.08% of shares outstanding on 15 Jan 2026 to 2.66% on 15 Sep 2026, a change of -0.42 percentage points. The year's high was 3.10% on 30 Jan 2026 and its low 2.17% on 31 Aug 2026, averaging 2.66% across 17 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 6.94 days on 15 Apr 2026. Full history: Iron Mountain Inc..

Cite this page

Plain

Short position data for Iron Mountain Inc. short interest in 2026: FINRA, compiled by howshorted.com, settlement date 15 Sep 2026. https://howshorted.com/us/company/irm/2026/

Wikipedia

<ref>{{cite web |title=Iron Mountain Inc. short interest in 2026 short position data |url=https://howshorted.com/us/company/irm/2026/ |website=HowShorted |publisher=howshorted.com (data: FINRA) |date=2026-09-15 |access-date=2026-10-13}}</ref>

BibTeX

@misc{howshorted-iron-mountain-inc-short-interest-in-2026-2026-09-15,
  title        = {Iron Mountain Inc. short interest in 2026 short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/irm/2026/}},
  note         = {Data: FINRA, settlement date 15 Sep 2026; accessed 2026-10-13},
  year         = {2026}
}

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2026 in figures

Start of year: 3.08% (15 Jan 2026)
End of year: 2.66% (15 Sep 2026)
Change: -0.42 pp
High: 3.10% (30 Jan 2026)
Low: 2.17% (31 Aug 2026)
Average: 2.66%
Highest days to cover: 6.94 (15 Apr 2026)
SEC filings marked: 6

Every report in 2026

Iron Mountain Inc. short interest in 2026
Settlement	Short interest	Days to cover	Filings since previous
15 Jan 2026	3.08%	4.49
30 Jan 2026	3.10%	4.80
13 Feb 2026	2.64%	3.01	10-K filed, results (8-K)
27 Feb 2026	2.56%	3.71
13 Mar 2026	2.86%	6.17
31 Mar 2026	2.77%	5.31
15 Apr 2026	2.71%	6.94
30 Apr 2026	2.57%	3.89	10-Q filed, results (8-K)
15 May 2026	2.48%	4.36
29 May 2026	2.45%	5.99
15 Jun 2026	2.71%	6.22
30 Jun 2026	2.51%	4.03
15 Jul 2026	2.78%	3.41
31 Jul 2026	2.81%	4.47
14 Aug 2026	2.39%	3.90	10-Q filed, results (8-K)
31 Aug 2026	2.17%	4.75
15 Sep 2026	2.66%	4.69

About this data

US short interest data: FINRA (finra.org), shown as reported shares short divided by SEC-reported shares outstanding for each settlement date. FINRA® is a registered trademark of the Financial Industry Regulatory Authority, Inc. This site is not affiliated with or endorsed by FINRA or the SEC; displayed for personal reference, bulk redistribution is not permitted (see terms). Nothing here is investment advice. Method: methodology.