Iron Mountain Incorporated
US ˙ NYSE ˙ US46284V1017

SecurityIRM / Iron Mountain Incorporated
InstitutionCoreCap Advisors, LLC
Latest Disclosed Ownership322 shares
Latest Disclosed Value $ 32,963
CoreCap Advisors, LLC reports 0.62% increase in ownership of IRM / Iron Mountain Incorporated

On April 7, 2026 - CoreCap Advisors, LLC filed a 13F-HR form disclosing ownership of 322 shares of Iron Mountain Incorporated (US:IRM) valued at $32,889 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 320 shares of Iron Mountain Incorporated. This represents a change in shares of 0.62% during the quarter. The current value of the position is $41,200 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-04-07 2026-03-31 13F IRON MTN INC DEL COM REIT 46284V101 322 2 0.62 33 23.08 0.0011
2026-01-13 2025-12-31 13F IRON MTN INC DEL COM REIT 46284V101 320 -1,289 -80.11 27 -84.15 0.0009
2025-10-22 2025-09-30 13F IRON MTN INC DEL COM REIT 46284V101 1,609 21 1.32 164 1.23 0.0060
2025-08-14 2025-06-30 13F IRON MTN INC DEL COM REIT 46284V101 1,588 -69 -4.16 163 14.08 0.0066
2025-05-09 2025-03-31 13F IRON MTN INC DEL COM 46284V101 1,657 -25,997 -94.01 143 -95.11 0.0063
2025-02-14 2024-12-31 13F IRON MTN INC DEL COM 46284V101 27,654 -8,756 -24.05 2,907 -32.82 0.1323
2024-11-08 2024-09-30 13F IRON MTN INC DEL COM 46284V101 36,410 8,317 29.61 4,327 71.87 0.2036
2024-08-08 2024-06-30 13F IRON MTN INC DEL COM 46284V101 28,093 -802 -2.78 2,518 8.63 0.2615
2024-08-08 2024-03-31 13F IRON MTN INC DEL COM 46284V101 28,895 -2,096 -6.76 2,318 6.87 0.1228
2024-01-16 2023-12-31 13F IRON MTN INC DEL COM 46284V101 30,991 -1,256 -3.89 2,169 13.09 0.1400
2024-01-16 2023-09-30 13F IRON MTN INC DEL COM 46284V101 32,247 -2,143 -6.23 1,917 -1.89 0.1382
2024-01-16 2023-06-30 13F IRON MTN INC DEL COM 46284V101 34,390 5,044 17.19 1,954 33.65 0.1392
2023-02-10 2022-12-31 13F IRON MTN INC DEL COM REIT 46284V101 29,346 29,346 1,463 0.1045
2023-02-10 2022-09-30 13F IRON MTN INC DEL COM REIT 46284V101 0 -2,658 -100.00 0 -100.00
2022-08-11 2022-06-30 13F IRON MTN INC DEL COM REIT 46284V101 2,658 2,658 129 0.0100
2022-04-29 2022-03-31 13F IRON MTN INC NEW COM REIT 46284V101 0 -1,175 -100.00 0 -100.00
2022-02-10 2021-12-31 13F IRON MTN INC NEW COM REIT 46284V101 1,175 1,175 62 0.0041
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.