Iron Mountain Incorporated
DE ˙ DB ˙ US46284V1017
108,60 € ↓ -0,40 (-0,37%)
2026-05-29
DEL PRIS
SecurityDE:I5M / Iron Mountain Incorporated
InstitutionIng Groep Nv
Latest Disclosed Ownership36,276 shares
Latest Disclosed Value $ 3,705,231
Ing Groep Nv ownership in I5M / Iron Mountain Incorporated

On May 11, 2026 - Ing Groep Nv filed a 13F-HR form disclosing ownership of 36,276 shares of Iron Mountain Incorporated (DE:I5M) valued at $3,220,583 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 0 shares of Iron Mountain Incorporated. The current value of the position is $3,939,574 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)
2026-05-11 2026-03-31 13F IRON MTN INC DEL COM 46284V101 36,276 36,276 3,705 0.0227
2026-02-11 2025-12-31 13F IRON MTN INC DEL COM 46284V101 0 -17,304 -100.00 0 -100.00
2025-11-06 2025-09-30 13F IRON MTN INC DEL COM 46284V101 17,304 -5,640 -24.58 1,764 -25.07 0.0095
2025-08-06 2025-06-30 13F IRON MTN INC DEL COM 46284V101 22,944 -6,164 -21.18 2,353 -6.03 0.0143
2025-05-09 2025-03-31 13F IRON MTN INC DEL COM 46284V101 29,108 -8,373 -22.34 2,504 -36.43 0.0174
2025-02-03 2024-12-31 13F IRON MTN INC DEL COM 46284V101 37,481 -1,750 -4.46 3,940 -15.49 0.0265
2024-11-06 2024-09-30 13F IRON MTN INC DEL COM 46284V101 39,231 -214 -0.54 4,662 31.85 0.0271
2024-08-13 2024-06-30 13F IRON MTN INC DEL COM 46284V101 39,445 21,234 116.60 3,535 142.12 0.0210
2024-05-10 2024-03-31 13F IRON MTN INC DEL COM 46284V101 18,211 13,137 258.91 1,461 311.27 0.0100
2024-02-08 2023-12-31 13F IRON MTN INC DEL COM 46284V101 5,074 -31,666 -86.19 355 -83.75 0.0029
2023-10-27 2023-09-30 13F IRON MTN INC DEL COM 46284V101 36,740 36,740 2,184 0.0193
2023-08-07 2023-06-30 13F IRON MTN INC DEL COM 46284V101 0 -3,801 -100.00 0 -100.00
2023-05-09 2023-03-31 13F IRON MTN INC DEL COM 46284V101 3,801 3,801 201 0.0020
2022-11-14 2022-09-30 13F IRON MTN INC COM 46284V101 0 -10,238 -100.00 0 -100.00
2022-08-08 2022-06-30 13F IRON MTN INC COM 46284V101 10,238 -40,084 -79.66 498 -82.14 0.0058
2022-05-13 2022-03-31 13F IRON MTN INC COM 46284V101 50,322 8,148 19.32 2,788 26.33 0.0281
2022-02-11 2021-12-31 13F IRON MTN INC COM 46284V101 42,174 12,028 39.90 2,207 68.47 0.0197
2021-11-02 2021-09-30 13F IRON MTN INC COM 46284V101 30,146 587 1.99 1,310 4.72 0.0168
2021-08-13 2021-06-30 13F IRON MTN INC COM 46284V101 29,559 10,463 54.79 1,251 76.94 0.0199
2021-05-12 2021-03-31 13F IRON MTN INC COM 46284V101 19,096 -18 -0.09 707 25.58 0.0146
2021-02-11 2020-12-31 13F IRON MTN INC COM 46284V101 19,114 19,114 563 0.0126
2020-05-06 2020-03-31 13F IRON MTN INC COM 46284V101 0 -19,696 -100.00 0 -100.00
2020-02-10 2019-12-31 13F IRON MTN INC COM 46284V101 19,696 19,696 628 0.0191
2019-11-08 2019-09-30 13F IRON MTN INC COM 46284V101 0 -9,907 -100.00 0 -100.00
2019-08-12 2019-06-30 13F IRON MTN INC COM 46284V101 9,907 9,907 310 0.0054
2017-11-08 2017-09-30 13F IRON MTN INC COM 46284V101 0 -12,572 -100.00 0 -100.00
2017-07-25 2017-06-30 13F IRON MTN INC COM 46284V101 12,572 12,572 432 0.0083
2017-05-01 2017-03-31 13F IRON MTN COM 46284V101 0 -206,109 -100.00 0 -100.00
2017-02-06 2016-12-31 13F IRON MTN COM 46284V101 206,109 -125,994 -37.94 6,674 -46.77 0.1252
2016-11-14 2016-09-30 13F IRON MTN COM 46284V101 332,103 28,705 9.46 12,537 3.80 0.1512
2016-07-27 2016-06-30 13F IRON MTN COM 46284V101 303,398 303,398 0.00 12,078 0.1624
2016-05-12 2016-03-31 13F IRON MTN COM 46284V101 0 0 0 0.0000
2016-02-12 2015-12-31 13F IRON MTN COM 46284V101 0 0 0 0.0000
2015-12-09 2015-09-30 13F/A-1 IRON MTN COM 46284V101 0 -42,800 -100.00 0 -100.00
2015-08-10 2015-06-30 13F IRON MTN COM 46284V101 42,800 -16,850 -28.25 1,326 -39.03 0.0072
2015-05-14 2015-03-31 13F IRON MTN COM 46284V101 59,650 59,650 2,175 0.0109
2015-02-17 2014-12-31 13F IRON MTN INC COM COM 462846106 0 -47,650 -100.00 0 -100.00
2014-11-14 2014-09-30 13F IRON MTN INC COM COM 462846106 47,650 -1,452,350 -96.82 1,557 -97.07 0.0090
2014-08-14 2014-06-30 13F IRON MTN COM 462846106 1,500,000 1,453,150 3,101.71 53,198 3,641.07 0.2689
2014-02-14 2013-12-31 13F IRON MTN COM 462846106 46,850 46,850 1,422 0.0072
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.