Iron Mountain Incorporated
MX ˙ BMV ˙ US46284V1017
SecurityMX:IRM1 / Iron Mountain Incorporated
InstitutionKoshinski Asset Management, Inc.
Latest Disclosed Ownership3,579 shares
Latest Disclosed Value $ 365,515
Koshinski Asset Management, Inc. reports 11.91% decrease in ownership of IRM1 / Iron Mountain Incorporated

On April 27, 2026 - Koshinski Asset Management, Inc. filed a 13F-HR form disclosing ownership of 3,579 shares of Iron Mountain Incorporated (MX:IRM1) valued at $365,515 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 4,063 shares of Iron Mountain Incorporated. This represents a change in shares of -11.91% 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.

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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)
2026-04-27 2026-03-31 13F IRON MTN INC DEL COM 46284V101 3,579 -484 -11.91 366 8.63 0.0228
2026-02-03 2025-12-31 13F IRON MTN INC DEL COM 46284V101 4,063 -1,045 -20.46 337 -35.38 0.0217
2025-11-10 2025-09-30 13F IRON MTN INC DEL COM 46284V101 5,108 98 1.96 521 1.36 0.0350
2025-07-29 2025-06-30 13F IRON MTN INC DEL COM 46284V101 5,010 539 12.06 514 33.59 0.0388
2025-04-25 2025-03-31 13F IRON MTN INC DEL COM 46284V101 4,471 59 1.34 385 -17.06 0.0327
2025-01-16 2024-12-31 13F IRON MTN INC DEL COM 46284V101 4,412 42 0.96 464 -10.79 0.0397
2024-10-10 2024-09-30 13F IRON MTN INC DEL COM 46284V101 4,370 34 0.78 519 28.78 0.0449
2024-07-12 2024-06-30 13F IRON MTN INC DEL COM 46284V101 4,336 -974 -18.34 404 -5.18 0.0374
2024-05-08 2024-03-31 13F IRON MTN INC DEL COM 46284V101 5,310 1,135 27.19 426 45.55 0.0436
2024-01-29 2023-12-31 13F IRON MTN INC DEL COM 46284V101 4,175 -118 -2.75 292 14.51 0.0443
2023-10-18 2023-09-30 13F IRON MTN INC DEL COM 46284V101 4,293 188 4.58 255 9.44 0.0293
2023-07-28 2023-06-30 13F IRON MTN INC DEL COM 46284V101 4,105 -480 -10.47 233 -3.72 0.0250
2023-04-12 2023-03-31 13F IRON MTN INC DEL COM 46284V101 4,585 -143 -3.02 243 2.98 0.0237
2023-01-24 2022-12-31 13F IRON MTN INC DEL COM 46284V101 4,728 -890 -15.84 236 0.0228
2022-10-20 2022-09-30 13F/A-1 IRON MTN INC DEL COM 46284V101 5,618 810 16.85 0 0.0295
2022-07-12 2022-06-30 13F IRON MTN INC COM 46284V101 4,808 0 0.00 0 -100.00 0.0233
2022-04-20 2022-03-31 13F IRON MTN INC COM 46284V101 4,808 -12,533 -72.27 266 -70.67 0.0219
2022-01-14 2021-12-31 13F IRON MTN INC COM 46284V101 17,341 144 0.84 907 21.42 0.0733
2021-10-12 2021-09-30 13F IRON MTN INC COM 46284V101 17,197 15,650 1,011.64 747 36.31 0.0650
2021-02-02 2020-12-31 13F IRON MTN INC COM 46284V101 1,547 1,547 548 0.1131
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.