Symbol
IRM on NYSE
Investment type
Equity / Common Stock
Latest Disclosed Shares Owned
19,106,540 shares
Security Ownership %
6.5%
Shares, Excluding Options vs Price
Value, Excluding Options

Cohen & Steers, Inc. ownership in IRON MOUNTAIN INC Common Stock (IRM)

13 Feb 2026 - Cohen & Steers, Inc. has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 19,106,540 shares of IRON MOUNTAIN INC Common Stock (IRM). This represents 6.5% ownership of the company. In their previous filing dated 14 Nov 2025, COHEN & STEERS, INC. had reported owning 16,029,962 shares, indicating an increase of +19%. .
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.