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NORTHERN TRUST CORP

Bank

Position in IRM — Iron Mountain Inc

CIK 73124 CHICAGO, IL

Position in IRM

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$533,402,957
+$109,472,320 QoQ
Shares Held
4,222,967
+1.7% QoQ
Ownership
1.42%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
#12
of 1,152 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 96% Shared 4% None 0%

Common Shares in IRM Over Time

Shares Held

Position Value (USD)

Position in REIT - Specialty

Real Estate · as of Jun 30, 2026

NORTHERN TRUST CORP holds $5,317,023,557 across 18 REIT - Specialty names. IRM ranks #4 (10.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 IRM
Iron Mountain Inc
This page
4,222,967 $533,402,957

All Filings in IRM

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $533,402,957 4,222,967
2026-03-31 $423,930,637 4,150,486
2025-12-31 $344,455,592 4,152,569
2025-09-30 $410,977,835 4,031,566
2025-06-30 $417,235,061 4,067,808
2025-03-31 $367,160,553 4,267,324
2024-12-31 $454,755,888 4,326,476
2024-09-30 $329,364,673 2,771,730
2024-06-30 $266,029,978 2,968,422
2024-03-31 $233,862,199 2,915,624
2023-12-31 $219,058,742 3,130,305
2023-09-30 $232,677,073 3,913,828
2023-06-30 $219,661,914 3,865,926
2023-03-31 $200,749,902 3,794,177
2022-12-31 $186,254,354 3,736,296
2022-09-30 $140,496,196 3,195,274
2022-06-30 $162,797,885 3,343,559
2022-03-31 $232,038,239 4,187,660
2021-12-31 $238,581,102 4,559,165
2021-09-30 $185,021,741 4,258,268
2021-06-30 $155,067,926 3,664,176
2021-03-31 $137,753,401 3,722,059
2020-12-31 $106,510,735 3,612,983
2020-09-30 $98,643,725 3,682,110
2020-06-30 $97,828,486 3,748,218
2020-03-31 $90,585,035 3,806,094