Iron Mountain Incorporated
MX ˙ BMV ˙ US46284V1017
SecurityMX:IRM1 / Iron Mountain Incorporated
InstitutionFinancial Avengers, Inc.
Latest Disclosed Ownership618 shares
Latest Disclosed Value $ 63,080
Financial Avengers, Inc. reports 1.15% increase in ownership of IRM1 / Iron Mountain Incorporated

On May 19, 2026 - Financial Avengers, Inc. filed a 13F-HR form disclosing ownership of 618 shares of Iron Mountain Incorporated (MX:IRM1) valued at $63,080 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 4, 2026 disclosing 611 shares of Iron Mountain Incorporated. This represents a change in shares of 1.15% during the quarter.

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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-19 2026-03-31 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 618 7 1.15 63 26.00 0.0288
2026-03-04 2025-12-31 13F/A-1 IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 611 4 0.66 51 -18.03 0.0208
2026-02-17 2025-12-31 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 607 0 62 0.0266
2025-11-17 2025-09-30 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 607 5 0.83 62 0.00 0.0266
2025-08-13 2025-06-30 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 602 6 1.01 62 19.61 0.0287
2025-05-15 2025-03-31 13F/A-1 IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 596 4 0.68 51 -17.74 0.0260
2025-05-15 2025-03-31 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 596 51
2025-02-18 2024-12-31 13F IRON MTN INC NEWREIT REAL ESTATE INVESTME 46284V101 592 3 0.51 62 -10.14 0.0294
2024-11-18 2024-09-30 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 589 5 0.86 70 32.69 0.0344
2024-08-14 2024-06-30 13F IRON MTN INC REAL ESTATE INVESTME 46284V101 584 4 0.69 52 13.04 0.0278
2024-05-13 2024-03-31 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 580 6 1.05 46 15.00 0.0244
2024-02-13 2023-12-31 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 574 6 1.06 40 21.21 0.0242
2023-11-15 2023-09-30 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 568 6 1.07 34 6.45 0.0226
2023-08-07 2023-06-30 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 562 7 1.26 32 6.90 0.0211
2023-05-12 2023-03-31 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 555 7 1.28 29 7.41 0.0225
2023-02-06 2022-12-31 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 548 7 1.29 27 12.50 0.0224
2022-11-07 2022-09-30 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 541 7 1.31 24 -7.69 0.0196
2022-08-16 2022-06-30 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 534 5 0.95 26 -10.34 0.0211
2022-05-11 2022-03-31 13F IRON MTN INC COMMON STOCK 46284V101 529 7 1.34 29 7.41 0.0181
2022-02-08 2021-12-31 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 522 8 1.56 27 22.73 0.0166
2021-11-01 2021-09-30 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 514 7 1.38 22 4.76 0.0147
2021-08-13 2021-06-30 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 507 8 1.60 21 16.67 0.0142
2021-05-14 2021-03-31 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 499 11 2.25 18 28.57 0.0135
2021-02-05 2020-12-31 13F IRON MTN INC NEW REIT REAL ESTATE INVESTME 46284V101 488 488 14 0.0115
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.