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Equibles

HORIZON KINETICS ASSET MANAGEMENT LLC

Position in IRM — Iron Mountain Inc

CIK 1056823 NEW YORK, NY
Back to IRM Full portfolio

Position in IRM

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$2,254,001
+$374,115 QoQ
Shares Held
17,845
-3.0% QoQ
Ownership
0.006%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
#375
of 1,159 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

HORIZON KINETICS ASSET MANAGEMENT LLC holds $10,660,999 across 5 REIT - Specialty names. IRM ranks #2 (21.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 FRMI
Fermi Inc.
 824,227 $7,549,919
2 IRM
Iron Mountain Inc
This page 		17,845 $2,254,001
3 RYN
Rayonier Inc
 18,174 $386,742
4 WY
Weyerhaeuser Co
 10,081 $241,339
5 AMT
American Tower Corp /Ma/
 1,400 $228,998

All Filings in IRM

Export CSV
26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,254,001 17,845
2026-03-31 $1,879,886 18,405
2025-12-31 $1,526,694 18,405
2025-09-30 $1,983,242 19,455
2025-06-30 $3,328,909 32,455
2025-03-31 $2,792,428 32,455
2024-12-31 $3,458,119 32,900
2024-09-30 $4,093,693 34,450
2024-06-30 $2,159,842 24,100
2024-03-31 $1,965,145 24,500
2023-12-31 $1,850,971 26,450
2023-09-30 $1,626,433 27,358
2023-06-30 $1,554,481 27,358
2023-03-31 $1,447,511 27,358
2022-12-31 $1,371,273 27,508
2022-09-30 $1,209,526 27,508
2022-06-30 $1,341,799 27,558
2022-03-31 $1,532,529 27,658
2021-12-31 $1,319,134 25,208
2021-09-30 $1,080,080 24,858
2021-06-30 $1,128,166 26,658
2021-03-31 $986,612 26,658
2020-12-31 $731,339 24,808
2020-09-30 $548,873 20,488
2020-06-30 $426,943 16,358
2020-03-31 $446,440 18,758