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SEI INVESTMENTS CO

Position in IRM — Iron Mountain Inc

CIK 350894 OAKS, PA

Position in IRM

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$88,131,159
-$11,434,095 QoQ
Shares Held
697,737
-28.4% QoQ
Ownership
0.234%
of shares outstanding
% of Portfolio
0.10%
of 13F equity value
Holder Rank
#47
of 1,152 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in IRM Over Time

Shares Held

Position Value (USD)

Position in REIT - Specialty

Real Estate · as of Jun 30, 2026

SEI INVESTMENTS CO holds $1,157,875,979 across 16 REIT - Specialty names. IRM ranks #6 (7.6% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 IRM
Iron Mountain Inc
This page
697,737 $88,131,159

All Filings in IRM

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $88,131,159 697,737
2026-03-31 $99,565,254 974,792
2025-12-31 $84,995,878 1,024,664
2025-09-30 $88,980,367 872,870
2025-06-30 $90,782,655 885,080
2025-03-31 $71,399,003 829,835
2024-12-31 $89,171,855 848,367
2024-09-30 $108,922,309 916,623
2024-06-30 $100,866,501 1,125,491
2024-03-31 $75,696,422 943,728
2023-12-31 $61,238,937 875,092
2023-09-30 $13,752,686 231,332
2023-06-30 $17,465,444 307,382
2023-03-31 $9,958,507 188,216
2022-12-31 $5,865,498 117,663
2022-09-30 $5,742,921 130,610
2022-06-30 $4,935,169 101,359
2022-03-31 $8,577,633 154,803
2021-12-31 $9,068,108 173,287
2021-09-30 $8,214,612 189,059
2021-06-30 $3,789,459 89,543
2021-03-31 $3,430,160 92,682
2020-12-31 $1,726,614 58,569
2020-09-30 $1,652,647 61,689
2020-06-30 $3,015,854 115,550
2020-03-31 $1,605,023 67,438