Iron Mountain Incorporated
US ˙ NYSE ˙ US46284V1017

SecurityIRM / Iron Mountain Incorporated
InstitutionIntegrated Wealth Concepts LLC
Latest Disclosed Ownership16,363 shares
Latest Disclosed Value $ 1,671,323
Integrated Wealth Concepts LLC reports 150.28% increase in ownership of IRM / Iron Mountain Incorporated

On May 15, 2026 - Integrated Wealth Concepts LLC filed a 13F-HR form disclosing ownership of 16,363 shares of Iron Mountain Incorporated (US:IRM) valued at $1,671,317 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 6,538 shares of Iron Mountain Incorporated. This represents a change in shares of 150.28% during the quarter. The current value of the position is $2,093,646 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)
2026-05-15 2026-03-31 13F IRON MOUNTAIN Common Stock 46284V101 16,363 9,825 150.28 1,671 208.30 0.0133
2026-02-13 2025-12-31 13F IRON MOUNTAIN Common Stock 46284V101 6,538 -1,134 -14.78 542 -30.69 0.0064
2025-11-14 2025-09-30 13F IRON MOUNTAIN Common Stock 46284V101 7,672 -685 -8.20 782 -8.75 0.0070
2025-08-14 2025-06-30 13F IRON MOUNTAIN Common Stock 46284V101 8,357 612 7.90 857 28.68 0.0086
2025-05-15 2025-03-31 13F IRON MOUNTAIN Common Stock 46284V101 7,745 -2,036 -20.82 666 -35.21 0.0078
2025-02-14 2024-12-31 13F IRON MOUNTAIN Common Stock 46284V101 9,781 -1,377 -12.34 1,028 -22.42 0.0119
2024-11-14 2024-09-30 13F IRON MOUNTAIN Common Stock 46284V101 11,158 35 0.31 1,326 33.03 0.0162
2024-08-14 2024-06-30 13F IRON MOUNTAIN Common Stock 46284V101 11,123 143 1.30 997 13.18 0.0136
2024-05-15 2024-03-31 13F IRON MOUNTAIN Common Stock 46284V101 10,980 684 6.64 881 22.22 0.0128
2024-02-13 2023-12-31 13F IRON MOUNTAIN Common Stock 46284V101 10,296 -1,233 -10.69 720 5.11 0.0118
2023-11-15 2023-09-30 13F IRON MOUNTAIN Common Stock 46284V101 11,529 -30 -0.26 685 4.42 0.0121
2023-08-15 2023-06-30 13F IRON MOUNTAIN Common Stock 46284V101 11,559 2,762 31.40 657 0.0113
2023-05-03 2023-03-31 13F IRON MOUNTAIN Common Stock 46284V101 8,797 2,965 50.84 0 0.0096
2023-02-13 2022-12-31 13F IRON MOUNTAIN Common Stock 46284V101 5,832 5,832 0 0.0079
2022-08-08 2022-06-30 13F IRON MOUNTAIN Common Stock 46284V101 0 -4,386 -100.00 0 -100.00
2022-05-12 2022-03-31 13F IRON MOUNTAIN Common Stock 46284V101 4,386 339 8.38 243 14.62 0.0074
2022-02-15 2021-12-31 13F IRON MOUNTAIN Common Stock 46284V101 4,047 -8,113 -66.72 212 -59.85 0.0063
2021-11-15 2021-09-30 13F IRON MOUNTAIN Common Stock 46284V101 12,160 12,160 528 0.0172
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.