Iron Mountain Incorporated
MX ˙ BMV ˙ US46284V1017
SecurityMX:IRM1 / Iron Mountain Incorporated
InstitutionNepsis, Inc.
Latest Disclosed Ownership22,530 shares
Latest Disclosed Value $ 2,301,214
Nepsis, Inc. reports 2.42% decrease in ownership of IRM1 / Iron Mountain Incorporated

On April 15, 2026 - Nepsis, Inc. filed a 13F-HR form disclosing ownership of 22,530 shares of Iron Mountain Incorporated (MX:IRM1) valued at $2,301,214 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 23,088 shares of Iron Mountain Incorporated. This represents a change in shares of -2.42% 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)
2026-04-15 2026-03-31 13F IRON MTN INC DEL COM 46284V101 22,530 -558 -2.42 2,301 20.16 0.7707
2026-01-14 2025-12-31 13F IRON MTN INC DEL COM 46284V101 23,088 -854 -3.57 1,915 -21.52 0.5918
2025-10-24 2025-09-30 13F IRON MTN INC DEL COM 46284V101 23,942 -8,052 -25.17 2,441 -25.63 0.7740
2025-07-14 2025-06-30 13F IRON MTN INC DEL COM 46284V101 31,994 -9,076 -22.10 3,282 -7.13 0.9136
2025-04-15 2025-03-31 13F IRON MTN INC DEL COM 46284V101 41,070 -7,244 -14.99 3,534 45.21 0.8725
2025-01-21 2024-12-31 13F IRON MTN INC DEL COM 46284V101 48,314 -48,268 -49.98 2,434 -78.80 0.6074
2024-10-18 2024-09-30 13F IRON MTN INC DEL COM 46284V101 96,582 26,331 37.48 11,477 82.30 2.7199
2024-07-15 2024-06-30 13F IRON MTN INC DEL COM 46284V101 70,251 1,516 2.21 6,296 14.18 1.6973
2024-04-12 2024-03-31 13F IRON MTN INC DEL COM 46284V101 68,735 2,025 3.04 5,513 18.10 1.4915
2024-01-18 2023-12-31 13F IRON MTN INC DEL COM 46284V101 66,710 -2,288 -3.32 4,668 13.83 1.3295
2023-10-13 2023-09-30 13F IRON MTN INC DEL COM 46284V101 68,998 2,513 3.78 4,102 8.58 1.2565
2023-07-18 2023-06-30 13F IRON MTN INC DEL COM 46284V101 66,485 804 1.22 3,778 8.69 1.1639
2023-04-14 2023-03-31 13F IRON MTN INC DEL COM 46284V101 65,681 423 0.65 3,475 6.82 1.1561
2023-01-25 2022-12-31 13F IRON MTN INC DEL COM 46284V101 65,258 741 1.15 3,253 14.66 1.0892
2022-11-01 2022-09-30 13F IRON MTN INC DEL COM 46284V101 64,517 1,558 2.47 2,837 -7.44 1.0253
2022-08-02 2022-06-30 13F IRON MTN INC COM 46284V101 62,959 5,052 8.72 3,065 -4.49 1.0452
2022-04-13 2022-03-31 13F IRON MTN INC COM 46284V101 57,907 -1,987 -3.32 3,209 2.39 0.9576
2022-01-14 2021-12-31 13F IRON MTN INC COM 46284V101 59,894 104 0.17 3,134 20.63 0.9090
2021-10-13 2021-09-30 13F IRON MTN INC COM 46284V101 59,790 59,790 2,598 0.8186
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.