Iron Mountain Incorporated
DE ˙ DB ˙ US46284V1017
110,15 € ↑2,20 (2,04%)
2026-06-03
AKTIENPREIS
SecurityDE:I5M / Iron Mountain Incorporated
InstitutionFox Run Management, L.l.c.
Latest Disclosed Ownership14,738 shares
Latest Disclosed Value $ 1,438,429
Fox Run Management, L.l.c. ownership in I5M / Iron Mountain Incorporated

On May 12, 2026 - Fox Run Management, L.l.c. filed a 13F-HR form disclosing ownership of 14,738 shares of Iron Mountain Incorporated (DE:I5M) valued at $1,308,440 USD as of March 31, 2026. The entity filed a previous 13F-HR on November 12, 2025 disclosing 0 shares of Iron Mountain Incorporated. The current value of the position is $1,623,391 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)
2026-05-12 2026-03-31 13F IRON MTN INC DEL COM 46284V101 14,738 14,738 1,438 0.2516
2025-11-12 2025-09-30 13F IRON MTN INC DEL COM 46284V101 0 -25,922 -100.00 0 -100.00
2025-08-06 2025-06-30 13F IRON MTN INC DEL COM 46284V101 25,922 25,922 2,659 0.4430
2024-11-12 2024-09-30 13F IRON MTN INC DEL COM 46284V101 0 -3,072 -100.00 0 -100.00
2024-08-13 2024-06-30 13F IRON MTN INC DEL COM 46284V101 3,072 3,072 275 0.0518
2023-11-07 2023-09-30 13F IRON MTN INC DEL COM 46284V101 0 -20,924 -100.00 0 -100.00
2023-08-11 2023-06-30 13F IRON MTN INC DEL COM 46284V101 20,924 20,924 1,189 0.3344
2022-02-09 2021-12-31 13F IRON MTN INC COM 46284V101 0 -10,927 -100.00 0 -100.00
2021-11-15 2021-09-30 13F IRON MTN INC COM 46284V101 10,927 10,927 475 0.2991
2021-02-08 2020-12-31 13F IRON MTN INC COM 46284V101 0 -17,168 -100.00 0 -100.00
2020-10-29 2020-09-30 13F IRON MTN INC COM 46284V101 17,168 17,168 460 1.1539
2020-07-31 2020-06-30 13F IRON MTN INC COM 46284V101 0 -10,434 -100.00 0 -100.00
2020-05-08 2020-03-31 13F IRON MTN INC COM 46284V101 10,434 2 0.02 248 -32.97 0.5875
2019-10-17 2019-03-31 13F IRON MTN NEW COM 46284V101 10,432 10,432 370 0.2090
2016-04-18 2016-03-31 13F IRON MTN INC COM 46284V101 0 -10,700 -100.00 0 -100.00
2016-01-13 2015-12-31 13F IRON MTN INC COM 46284V101 10,700 10,700 289 0.2235
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.