Iron Mountain Incorporated
MX ˙ BMV ˙ US46284V1017
SecurityMX:IRM1 / Iron Mountain Incorporated
InstitutionAndra AP-fonden
Latest Disclosed Ownership31,552 shares
Latest Disclosed Value $ 3,222,721
Andra AP-fonden reports 84.33% decrease in ownership of IRM1 / Iron Mountain Incorporated

On May 8, 2026 - Andra AP-fonden filed a 13F-HR form disclosing ownership of 31,552 shares of Iron Mountain Incorporated (MX:IRM1) valued at $3,222,721 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 201,300 shares of Iron Mountain Incorporated. This represents a change in shares of -84.33% 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.

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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)
2026-05-08 2026-03-31 13F IRON MTN INC DEL COM 46284V101 31,552 -169,748 -84.33 3,223 -80.70 0.0384
2026-02-12 2025-12-31 13F IRON MTN INC DEL COM 46284V101 201,300 -14,400 -6.68 16,698 -24.06 0.2063
2025-11-12 2025-09-30 13F IRON MTN INC DEL COM 46284V101 215,700 -30,200 -12.28 21,988 -12.82 0.2810
2025-08-06 2025-06-30 13F IRON MTN INC DEL COM 46284V101 245,900 -28,900 -10.52 25,222 6.67 0.3509
2025-05-13 2025-03-31 13F IRON MTN INC DEL COM 46284V101 274,800 40,800 17.44 23,644 -3.87 0.3876
2025-02-07 2024-12-31 13F IRON MTN INC DEL COM 46284V101 234,000 2,100 0.91 24,596 -10.75 0.3939
2024-11-12 2024-09-30 13F IRON MTN INC DEL COM 46284V101 231,900 -400 -0.17 27,557 32.37 0.4058
2024-08-07 2024-06-30 13F IRON MTN INC DEL COM 46284V101 232,300 -62,674 -21.25 20,819 -12.01 0.3498
2024-05-13 2024-03-31 13F IRON MTN INC DEL COM 46284V101 294,974 170,474 136.93 23,660 171.57 0.4200
2024-02-15 2023-12-31 13F IRON MTN INC DEL COM 46284V101 124,500 41,700 50.36 8,713 77.00 0.4613
2023-11-09 2023-09-30 13F IRON MTN INC DEL COM 46284V101 82,800 -27,900 -25.20 4,922 -21.74 0.2902
2023-08-09 2023-06-30 13F IRON MTN INC DEL COM 46284V101 110,700 -55,500 -33.39 6,290 -28.48 0.1591
2023-05-12 2023-03-31 13F IRON MTN INC DEL COM 46284V101 166,200 24,700 17.46 8,794 125,514.29 0.2287
2023-02-13 2022-12-31 13F IRON MTN INC DEL COM 46284V101 141,500 54,900 63.39 7 -99.82 0.2138
2022-11-14 2022-09-30 13F IRON MTN INC DEL COM 46284V101 86,600 -9,900 -10.26 3,808 -18.96 0.1248
2022-08-15 2022-06-30 13F IRON MTN INC COM 46284V101 96,500 -33,100 -25.54 4,699 -30.71 0.1346
2022-02-15 2021-12-31 13F IRON MTN INC COM 46284V101 129,600 -76,600 -37.15 6,782 -24.30 0.1381
2021-11-12 2021-09-30 13F IRON MTN INC COM 46284V101 206,200 12,300 6.34 8,959 9.18 0.1844
2021-08-16 2021-06-30 13F IRON MTN INC COM 46284V101 193,900 19,700 11.31 8,206 27.28 0.1676
2021-05-17 2021-03-31 13F IRON MTN INC COM 46284V101 174,200 3,700 2.17 6,447 28.27 0.1421
2021-02-12 2020-12-31 13F IRON MTN INC COM 46284V101 170,500 91,500 115.82 5,026 137.52 0.1109
2020-11-12 2020-09-30 13F IRON MTN INC COM 46284V101 79,000 -48,500 -38.04 2,116 -36.42 0.0574
2020-08-06 2020-06-30 13F IRON MTN INC COM 46284V101 127,500 -61,900 -32.68 3,328 -26.18 0.0968
2020-05-13 2020-03-31 13F IRON MTN INC COM 46284V101 189,400 -2,300 -1.20 4,508 -26.21 0.1639
2020-02-10 2019-12-31 13F IRON MTN INC COM 46284V101 191,700 -23,300 -10.84 6,109 -12.28 0.1748
2019-11-19 2019-09-30 13F IRON MTN INC COM 46284V101 215,000 -42,200 -16.41 6,964 -13.49 0.2069
2019-08-15 2019-06-30 13F IRON MTN INC COM 46284V101 257,200 98,700 62.27 8,050 43.24 0.2317
2019-05-14 2019-03-31 13F IRON MTN INC COM 46284V101 158,500 18,100 12.89 5,620 15.95 0.1637
2018-10-16 2018-09-30 13F IRON MTN INC COM 46284V101 140,400 15,100 12.05 4,847 10.49 0.1250
2018-08-17 2018-06-30 13F IRON MTN INC COM 46284V101 125,300 -14,500 -10.37 4,387 -4.51 0.1186
2018-04-10 2018-03-31 13F IRON MTN INC COM 46284V101 139,800 89,600 178.49 4,594 142.56 0.1191
2018-02-14 2017-12-31 13F IRON MTN INC COM 46284V101 50,200 8,600 20.67 1,894 17.06 0.0430
2017-10-31 2017-09-30 13F IRON MTN INC COM 46284V101 41,600 -3,600 -7.96 1,618 4.19 0.0379
2017-08-08 2017-06-30 13F IRON MTN INC COM 46284V101 45,200 17,700 64.36 1,553 58.31 0.0384
2017-05-15 2017-03-31 13F IRON MTN INC COM 46284V101 27,500 -9,500 -25.68 981 -18.39 0.0230
2017-02-13 2016-12-31 13F IRON MTN INC COM 46284V101 37,000 22,100 148.32 1,202 115.03 0.0329
2016-11-14 2016-09-30 13F IRON MTN INC COM 46284V101 14,900 -12,700 -46.01 559 -49.14 0.0150
2016-08-12 2016-06-30 13F IRON MTN INC COM 46284V101 27,600 -200 -0.72 1,099 16.54 0.0281
2016-05-04 2016-03-31 13F IRON MTN INC COM 46284V101 27,800 -6,300 -18.48 943 2.39 0.0247
2016-02-10 2015-12-31 13F IRON MTN INC COM 46284V101 34,100 100 0.29 921 -12.70 0.0263
2015-11-12 2015-09-30 13F IRON MTN INC COM 46284V101 34,000 -2,800 -7.61 1,055 -7.54 0.0309
2015-08-13 2015-06-30 13F IRON MTN INC COM 46284V101 36,800 -17,600 -32.35 1,141 -42.52 0.0330
2015-05-14 2015-03-31 13F IRON MTN INC COM 46284V101 54,400 -9,133 -14.38 1,985 -19.18 0.0562
2015-02-13 2014-12-31 13F IRON MTN COM 462846106 63,533 54,933 638.76 2,456 774.02 0.0569
2014-11-12 2014-09-30 13F IRON MTN COM 462846106 8,600 8,600 281 0.0066
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.