Iron Mountain Incorporated
DE ˙ DB ˙ US46284V1017
111,85 € ↑2,30 (2,10%)
2026-06-05
DEL PRIS
SecurityDE:I5M / Iron Mountain Incorporated
InstitutionPensionfund Sabic
Latest Disclosed Ownership20,300 shares
Latest Disclosed Value $ 2,073
Pensionfund Sabic reports 7.98% increase in ownership of I5M / Iron Mountain Incorporated

On April 1, 2026 - Pensionfund Sabic filed a 13F-HR form disclosing ownership of 20,300 shares of Iron Mountain Incorporated (DE:I5M) valued at $1,802,234 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 12, 2026 disclosing 18,800 shares of Iron Mountain Incorporated. This represents a change in shares of 7.98% during the quarter. The current value of the position is $2,270,555 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)
2026-04-01 2026-03-31 13F Iron Mountain COMMON STOCK 46284V101 20,300 1,500 7.98 2 100.00 2.4969
2026-01-12 2025-12-31 13F Iron Mountain COMMON STOCK 46284V101 18,800 -500 -2.59 2 0.00 0.4229
2026-03-26 2025-09-30 13F Iron Mountain COMMON STOCK 46284V101 18,100 -1,200 -6.22 2 0.00 0.4890
2026-03-26 2025-06-30 13F Iron Mountain COMMON STOCK 46284V101 19,300 0 0.00 2 0.00 0.5447
2025-06-30 2025-03-31 13F Iron Mountain COMMON STOCK 46284V101 19,300 -3,000 -13.45 2 -50.00 0.4953
2025-01-06 2024-12-31 13F Iron Mountain COMMON STOCK 46284V101 22,300 -700 -3.04 2 0.00 0.6152
2024-10-09 2024-09-30 13F Iron Mountain COMMON STOCK 46284V101 23,000 -4,500 -16.36 3 0.00 0.8533
2024-07-02 2024-06-30 13F Iron Mountain COMMON STOCK 46284V101 27,500 -1,000 -3.51 2 0.00 0.7257
2024-04-08 2024-03-31 13F Iron Mountain COMMON STOCK 46284V101 28,500 3,000 11.76 2 100.00 0.6776
2024-01-04 2023-12-31 13F Iron Mountain COMMON STOCK 46284V101 25,500 0 0.00 2 0.00 0.5619
2023-10-10 2023-09-30 13F Iron Mountain COMMON STOCK 46284V101 25,500 0 0.00 2 0.00 0.5325
2023-07-05 2023-06-30 13F Iron Mountain COMMON STOCK 46284V101 25,500 0 0.00 1 0.00 0.4858
2023-04-03 2023-03-31 13F Iron Mountain COMMON STOCK 46284V101 25,500 0 0.00 1 0.00 0.4698
2023-01-03 2022-12-31 13F Iron Mountain COMMON STOCK 46284V101 25,500 0 0.00 1 -99.91 0.4130
2022-10-03 2022-09-30 13F Iron Mountain COMMON STOCK 46284V101 25,500 0 0.00 1,121 -9.74 0.3949
2022-07-06 2022-06-30 13F Iron Mountain COMMON STOCK 46284V101 25,500 -12,500 -32.89 1,242 -41.03 0.3967
2022-04-12 2022-03-31 13F Iron Mountain COMMON STOCK 46284V101 38,000 -6,000 -13.64 2,106 -8.55 0.5203
2022-01-06 2021-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 44,000 0 0.00 2,303 20.45 0.4315
2021-10-06 2021-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 44,000 0 0.00 1,912 2.69 0.4039
2021-07-01 2021-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 44,000 0 0.00 1,862 14.37 0.3972
2021-04-01 2021-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 44,000 4,500 11.39 1,628 53.88 0.3763
2021-01-04 2020-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 39,500 0 0.00 1,058 0.00 0.2667
2020-10-05 2020-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 39,500 3,000 8.22 1,058 11.02 0.2667
2020-07-01 2020-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 36,500 0 0.00 953 9.67 0.2698
2020-04-02 2020-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 36,500 0 0.00 869 -25.28 0.2956
2020-01-06 2019-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 36,500 4,000 12.31 1,163 14.36 0.3232
2019-10-01 2019-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 32,500 0 0.00 1,017 0.00 0.3107
2019-07-02 2019-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 32,500 0 0.00 1,017 -11.72 0.3107
2019-04-01 2019-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 32,500 -1,000 -2.99 1,152 6.08 0.3633
2019-01-02 2018-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 33,500 0 0.00 1,086 -6.06 0.3324
2018-10-01 2018-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 33,500 0 0.00 1,156 -1.45 0.3150
2018-07-02 2018-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 33,500 0 0.00 1,173 6.54 0.3297
2018-04-03 2018-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 33,500 5,000 17.54 1,101 2.42 0.3138
2018-01-02 2017-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 28,500 4,000 16.33 1,075 12.80 0.3120
2017-10-04 2017-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 24,500 4,500 22.50 953 38.72 0.2941
2017-07-05 2017-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 20,000 0 0.00 687 -3.65 0.2217
2017-04-03 2017-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 20,000 1,000 5.26 713 15.56 0.2201
2017-01-03 2016-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 19,000 7,000 58.33 617 37.11 0.1840
2016-10-12 2016-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 12,000 12,000 450 0.1358
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.