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RHUMBLINE ADVISERS

Position in IRM — Iron Mountain Inc

CIK 1115418 BOSTON, MA

Position in IRM

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$72,409,354
+$13,316,972 QoQ
Shares Held
573,267
-0.9% QoQ
Ownership
0.193%
of shares outstanding
% of Portfolio
0.06%
of 13F equity value
Holder Rank
#59
of 1,152 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 60% Shared 0% None 40%

Common Shares in IRM Over Time

Shares Held

Position Value (USD)

Position in REIT - Specialty

Real Estate · as of Jun 30, 2026

RHUMBLINE ADVISERS holds $794,767,109 across 16 REIT - Specialty names. IRM ranks #4 (9.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 IRM
Iron Mountain Inc
This page
573,267 $72,409,354

All Filings in IRM

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $72,409,354 573,267
2026-03-31 $59,092,382 578,543
2025-12-31 $48,985,293 590,540
2025-09-30 $60,821,175 596,637
2025-06-30 $63,582,527 619,894
2025-03-31 $57,130,646 664,001
2024-12-31 $66,976,722 637,206
2024-09-30 $79,553,833 669,476
2024-06-30 $60,252,242 672,308
2024-03-31 $51,136,682 637,535
2023-12-31 $44,582,368 637,073
2023-09-30 $38,467,657 647,059
2023-06-30 $36,883,737 649,133
2023-03-31 $34,824,938 658,192
2022-12-31 $31,120,457 624,282
2022-09-30 $25,542,920 580,917
2022-06-30 $27,531,030 565,435
2022-03-31 $28,679,163 517,581
2021-12-31 $28,130,985 537,569
2021-09-30 $22,571,058 519,472
2021-06-30 $21,794,080 514,983
2021-03-31 $20,004,719 540,522
2020-12-31 $17,618,427 597,640
2020-09-30 $15,892,872 593,239
2020-06-30 $15,700,481 601,551
2020-03-31 $13,943,420 585,858