DOSSIER · 13F Holders · Q2 2026Financial Services · Real Estate Investment Trusts
IRM

IRON MTN INC DEL

1,214 institutions still hold IRON MTN INC DEL as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 46284V101·Real Estate Investment Trusts·1,214 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$21.8B
visible holders
Holders
1,214
filers reporting
Concentration
19.46%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

1,214 institutions reported IRM in Q2 2026. BlackRock, Inc. leads at 19.5% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$4.2B33.6M0.06%Q2 2026
02
Vanguard Portfolio Management
CIK 0002100121· Index
$3.2B25.6M0.15%Q2 2026
03
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$2.4B19.0M0.05%Q2 2026
04
STATE STREET CORP
CIK 0000093751
$2.2B17.6M0.07%Q2 2026
05
COHEN & STEERS, INC.
CIK 0001284812
$1.7B16.2M2.87%Q1 2026
06
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$1.1B8.6M0.06%Q2 2026
07
FMR LLC
CIK 0000315066
$994M7.9M0.04%Q2 2026
08
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$584M4.6M0.11%Q2 2026
09
MORGAN STANLEY
CIK 0000895421
$559M4.4M0.03%Q2 2026
10
PRINCIPAL FINANCIAL GROUP INC
CIK 0001126328
$552M4.4M0.27%Q2 2026
11
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$539M4.3M0.07%Q2 2026
12
NORTHERN TRUST CORP
CIK 0000073124· Index
$533M4.2M0.06%Q2 2026
13
NORGES BANK
CIK 0001374170· Sovereign
$532M4.2M0.05%Q2 2026
14
Invesco Ltd.
CIK 0000914208
$514M4.1M0.04%Q2 2026
15
Legal & General Group Plc
CIK 0000764068
$410M3.2M0.09%Q2 2026
16
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
CIK 0000861177
$403M3.2M0.07%Q2 2026
17
DEUTSCHE BANK AG\
CIK 0000948046
$385M3.0M0.11%Q2 2026
18
GOLDMAN SACHS GROUP INC
CIK 0000886982
$357M2.8M0.03%Q2 2026
19
CENTERSQUARE INVESTMENT MANAGEMENT LLC
CIK 0001725296
$294M2.3M2.51%Q2 2026
20
JPMORGAN CHASE & CO
CIK 0000019617
$288M2.2M0.02%Q2 2026
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Insiders at IRON MTN INC DEL
Kidd MarkMcintosh Greg WSamuels Theodore R. IiSimons DoyleMeaney William LBorges DanielRakowich Walter CFord Monte E