IRM institutional holders

IRON MTN INC DEL COM · 13F, 2026Q2

Managers holding1,167
Shares held257,191,531
Reported value$32.5bn
Quarter flows153 new, 448 added, 380 trimmed, 75 exited

Top 25 holders

ManagerSharesValue% of manager's 13F
BlackRock, Inc.33,570,910$4.2bn0.1%
VANGUARD PORTFOLIO MANAGEMENT LLC25,568,944$3.2bn0.1%
VANGUARD CAPITAL MANAGEMENT LLC18,953,705$2.4bn0.1%
STATE STREET CORP17,634,044$2.2bn0.1%
COHEN & STEERS, INC.12,019,735$1.5bn2.4%
GEODE CAPITAL MANAGEMENT, LLC8,649,249$1.1bn0.1%
FMR LLC7,872,365$994.4m0.0%
DIMENSIONAL FUND ADVISORS LP4,625,684$584.3m0.1%
MORGAN STANLEY4,426,922$559.2m0.0%
PRINCIPAL FINANCIAL GROUP INC4,373,424$552.4m0.3%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC4,263,487$538.5m0.1%
NORTHERN TRUST CORP4,222,967$533.4m0.1%
NORGES BANK4,214,697$532.4m0.1%
Invesco Ltd.4,065,649$513.5m0.0%
Legal & General Group Plc3,244,741$409.8m0.1%
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC3,193,560$403.4m0.1%
DEUTSCHE BANK AG\3,049,079$385.1m0.1%
GOLDMAN SACHS GROUP INC2,822,732$356.5m0.0%
CENTERSQUARE INVESTMENT MANAGEMENT LLC2,323,974$293.5m2.5%
JPMORGAN CHASE & CO2,212,137$287.5m0.0%
Nuveen, LLC2,218,771$280.3m0.1%
AQR CAPITAL MANAGEMENT LLC2,127,095$266.5m0.1%
PRUDENTIAL FINANCIAL INC1,974,079$249.3m0.3%
Vontobel Holding Ltd.1,919,656$242.5m0.8%
Daiwa Securities Group Inc.1,861,547$235.1m0.5%

Every holder, line by line, and the full history since 2013: yf.Client().holders("IRM"). IRM price history · All 13F data

Get a free API keySee history bundlesDownload free samples