Iron Mountain Incorporated
US ˙ NYSE ˙ US46284V1017

SecurityIRM / Iron Mountain Incorporated
InstitutionBogart Wealth, LLC
Latest Disclosed Ownership3,900 shares
Latest Disclosed Value $ 398,346
Bogart Wealth, LLC reports 0.48% decrease in ownership of IRM / Iron Mountain Incorporated

On April 28, 2026 - Bogart Wealth, LLC filed a 13F-HR form disclosing ownership of 3,900 shares of Iron Mountain Incorporated (US:IRM) valued at $398,346 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 3,919 shares of Iron Mountain Incorporated. This represents a change in shares of -0.48% during the quarter. The current value of the position is $499,005 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)
2026-04-28 2026-03-31 13F IRON MTN INC DEL COM REIT 46284V101 3,900 -19 -0.48 398 22.46 0.0153
2026-01-30 2025-12-31 13F IRON MTN INC DEL COM REIT 46284V101 3,919 7 0.18 325 -18.34 0.0130
2025-10-27 2025-09-30 13F IRON MTN INC DEL COM REIT 46284V101 3,912 5 0.13 399 -0.50 0.0162
2025-07-30 2025-06-30 13F IRON MTN INC DEL COM REIT 46284V101 3,907 0 0.00 401 19.05 0.0171
2025-05-02 2025-03-31 13F IRON MTN INC DEL COM REIT 46284V101 3,907 -64 -1.61 336 -19.42 0.0159
2025-01-30 2024-12-31 13F IRON MTN INC DEL COM REIT 46284V101 3,971 -112 -2.74 417 -14.02 0.0198
2024-10-23 2024-09-30 13F IRON MTN INC DEL COM REIT 46284V101 4,083 -75 -1.80 485 30.38 0.0230
2024-07-31 2024-06-30 13F IRON MTN INC DEL COM REIT 46284V101 4,158 19 0.46 373 12.39 0.0190
2024-04-25 2024-03-31 13F IRON MTN INC DEL COM REIT 46284V101 4,139 30 0.73 332 15.33 0.0171
2024-02-07 2023-12-31 13F IRON MTN INC DEL COM REIT 46284V101 4,109 0 0.00 288 17.62 0.0162
2023-10-30 2023-09-30 13F IRON MTN INC DEL COM REIT 46284V101 4,109 33 0.81 244 5.63 0.0151
2023-07-31 2023-06-30 13F IRON MTN INC DEL COM REIT 46284V101 4,076 30 0.74 232 7.94 0.0147
2023-04-21 2023-03-31 13F IRON MTN INC DEL COM REIT 46284V101 4,046 0 0.00 214 6.47 0.0143
2023-02-06 2022-12-31 13F IRON MTN INC DEL COM REIT 46284V101 4,046 0 0.00 202 12.92 0.0140
2022-11-03 2022-09-30 13F IRON MTN INC DEL COM REIT 46284V101 4,046 1,118 38.18 178 24.48 0.0149
2022-07-22 2022-06-30 13F IRON MTN INC NEW COM REIT 46284V101 2,928 0 0.00 143 -11.73 0.0125
2022-04-22 2022-03-31 13F IRON MTN INC NEW COM REIT 46284V101 2,928 1,004 52.18 162 60.40 0.0139
2022-01-19 2021-12-31 13F IRON MTN INC NEW COM REIT 46284V101 1,924 200 11.60 101 34.67 0.0091
2021-10-15 2021-09-30 13F IRON MTN INC NEW COM REIT 46284V101 1,724 867 101.17 75 108.33 0.0076
2021-08-06 2021-06-30 13F IRON MTN INC NEW COM REIT 46284V101 857 857 36 0.0039
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.