Iron Mountain Incorporated
DE ˙ DB ˙ US46284V1017
111,85 € ↑2,30 (2,10%)
2026-06-05
DEL PRIS
SecurityDE:I5M / Iron Mountain Incorporated
InstitutionSwedbank AB
Latest Disclosed Ownership260,330 shares
Latest Disclosed Value $ 26,590,105
Swedbank AB reports 8.61% decrease in ownership of I5M / Iron Mountain Incorporated

On April 29, 2026 - Swedbank AB filed a 13F-HR form disclosing ownership of 260,330 shares of Iron Mountain Incorporated (DE:I5M) valued at $23,112,097 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 9, 2026 disclosing 284,858 shares of Iron Mountain Incorporated. This represents a change in shares of -8.61% during the quarter. The current value of the position is $29,117,910 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)
2026-04-29 2026-03-31 13F IRON MTN INC DEL COM 46284V101 260,330 -24,528 -8.61 26,590 12.54 0.0157
2026-02-09 2025-12-31 13F/A-1 IRON MTN INC DEL COM 46284V101 284,858 0 0.00 23,629 -18.63 0.0229
2026-02-03 2025-12-31 13F IRON MTN INC DEL COM 46284V101 284,858 0 23,629 0.0128
2025-10-15 2025-09-30 13F IRON MTN INC DEL COM 46284V101 284,858 -30,202 -9.59 29,038 -10.14 0.0294
2025-07-10 2025-06-30 13F IRON MTN INC DEL COM 46284V101 315,060 12,030 3.97 32,316 23.95 0.0363
2025-04-14 2025-03-31 13F IRON MTN INC DEL COM 46284V101 303,030 14,092 4.88 26,073 -14.15 0.0347
2025-01-22 2024-12-31 13F IRON MTN INC DEL COM 46284V101 288,938 60,886 26.70 30,370 12.07 0.0373
2024-10-11 2024-09-30 13F IRON MTN INC DEL COM 46284V101 228,052 -1,160 -0.51 27,099 31.93 0.0346
2024-07-11 2024-06-30 13F IRON MTN INC DEL COM 46284V101 229,212 -13,213 -5.45 20,542 5.64 0.0275
2024-05-15 2024-03-31 13F/A-1 IRON MOUNTAIN IN COM 46284V101 242,425 8,674 3.71 19,445 18.87 0.1698
2024-12-06 2023-12-31 13F IRON MTN INC DEL COM 46284V101 233,751 -7,951 -3.29 16,358 13.84 0.0263
2024-12-06 2023-09-30 13F IRON MTN INC DEL COM 46284V101 241,702 6,000 2.55 14,369 7.30 0.0249
2024-12-06 2023-06-30 13F IRON MTN INC DEL COM 46284V101 235,702 -33,272 -12.37 13,393 -5.90 0.0227
2024-12-06 2023-03-31 13F IRON MTN INC DEL COM 46284V101 268,974 -3,663 -1.34 14,231 4.72 0.0281
2024-12-06 2022-12-31 13F IRON MTN INC DEL COM 46284V101 272,637 -22,818 -7.72 13,591 4.61 0.0299
2024-12-06 2022-09-30 13F IRON MTN INC DEL COM 46284V101 295,455 9,609 3.36 12,991 -6.65 0.0308
2024-12-06 2022-06-30 13F IRON MTN INC COM 46284V101 285,846 -4,403 -1.52 13,918 -13.46 0.0314
2024-12-06 2022-03-31 13F IRON MTN INC COM 46284V101 290,249 4,756 1.67 16,083 7.22 0.0298
2024-12-06 2021-12-31 13F IRON MTN INC COM 46284V101 285,493 393 0.14 15,000 21.09 0.0251
2024-12-06 2021-09-30 13F IRON MTN INC COM 46284V101 285,100 3,442 1.22 12,388 3.93 0.0231
2024-12-06 2021-06-30 13F IRON MTN INC COM 46284V101 281,658 16,428 6.19 11,920 21.42 0.0224
2024-12-06 2021-03-31 13F IRON MTN INC COM 46284V101 265,230 265,230 9,816 0.0204
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.