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BlackRock, Inc.

Position in IRM — Iron Mountain Inc

CIK 2012383 New York, NY

Position in IRM

as of Jun 30, 2026 · filed Aug 7, 2026
Position Value
$4,240,341,633
+$867,540,545 QoQ
Shares Held
33,570,910
+1.7% QoQ
Ownership
11.3%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
#1
of 1,151 holders
Holding Since
Sep 2024
8 quarters on record
Voting authority Sole 90% Shared 0% None 10%

Common Shares in IRM Over Time

Shares Held

Position Value (USD)

Position in REIT - Specialty

Real Estate · as of Jun 30, 2026

BlackRock, Inc. holds $43,488,285,349 across 19 REIT - Specialty names. IRM ranks #4 (9.8% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 IRM
Iron Mountain Inc
This page
33,570,910 $4,240,341,633

All Filings in IRM

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8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $4,240,341,633 33,570,910
2026-03-31 $3,372,801,088 33,021,354
2025-12-31 $2,730,685,620 32,919,658
2025-09-30 $3,232,421,974 31,709,064
2025-06-30 $3,208,248,759 31,278,627
2025-03-31 $3,030,567,895 35,222,779
2024-12-31 $3,371,179,565 32,072,872
2024-09-30 $3,720,524,155 31,309,637