Iron Mountain Incorporated IRM

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116.69 USD +1.51 (+1.31%)

At closeNov 3, 2026, 8:00 PM EST

115.06 -1.63 -1.40%

After hours · Nov 3, 8:00 PM ET

115.25 Day range 116.92

77.77 52-week range 134.68

Held by insiders 0.88%

Held by institutions 86.95%

Float held by institutions 87.72%

Institutions 1,583

Top institutional holders
Holder	% held	Shares	Value	Reported
Blackrock Inc.	11.28%	33,570,910	3.92B	Jun 29, 2026
Vanguard Portfolio Management LLC	8.59%	25,568,944	2.98B	Jun 29, 2026
Vanguard Capital Management LLC	6.37%	18,953,705	2.21B	Jun 29, 2026
State Street Corporation	5.92%	17,634,044	2.06B	Jun 29, 2026
Cohen & Steers Inc.	4.04%	12,019,735	1.40B	Jun 29, 2026
Geode Capital Management, LLC	2.91%	8,649,249	1.01B	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
VANGUARD SPECIALIZED FUNDS-Vanguard Real Estate Index Fund	3.80%	11,316,264	1.32B	Jul 30, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	3.01%	8,973,757	1.05B	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard 500 Index Fund	2.59%	7,712,258	899.87M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Mid-Cap Index Fund	2.06%	6,124,379	714.59M	Jun 29, 2026
iShares Trust-iShares Core S&P 500 ETF	1.33%	3,967,194	462.89M	Sep 29, 2026
Fidelity Concord Street Trust-Fidelity 500 Index Fund	1.30%	3,862,141	450.63M	Aug 30, 2026

IRM insiders
Insider	Relation	Latest transaction	Date	Shares held
ARWAY PAMELA M.	Director	Sale	May 11, 2026	40,196
BAILEY CLARKE HIGGINS	Director	Conversion of Exercise of derivative security	Jun 30, 2025	267,273
DAUTEN KENT P	Director	Stock Award(Grant)	May 6, 2026	1,209,570
FORD MONTE E.	Director	Stock Award(Grant)	May 6, 2026	31,817
HYTINEN BARRY A	Chief Financial Officer	Conversion of Exercise of derivative security	Feb 26, 2026	326,623
KIDD MARK	Officer	Sale	Aug 31, 2026	95,507

Held by funds