Iron Mountain Incorporated
DE ˙ DB ˙ US46284V1017
111,85 € ↑2,30 (2,10%)
2026-06-05
DEL PRIS
SecurityDE:I5M / Iron Mountain Incorporated
InstitutionCIBC Asset Management Inc
Latest Disclosed Ownership71,980 shares
Latest Disclosed Value $ 7,352,037
CIBC Asset Management Inc reports 0.11% increase in ownership of I5M / Iron Mountain Incorporated

On May 12, 2026 - CIBC Asset Management Inc filed a 13F-HR form disclosing ownership of 71,980 shares of Iron Mountain Incorporated (DE:I5M) valued at $6,390,384 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 71,901 shares of Iron Mountain Incorporated. This represents a change in shares of 0.11% during the quarter. The current value of the position is $8,050,963 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 71,980 79 0.11 7,352 23.27 0.0180
2026-02-10 2025-12-31 13F IRON MTN INC DEL COM 46284V101 71,901 29,110 68.03 5,964 36.73 0.0144
2025-10-31 2025-09-30 13F IRON MTN INC DEL COM 46284V101 42,791 1,744 4.25 4,362 3.61 0.0126
2025-08-14 2025-06-30 13F IRON MTN INC DEL COM 46284V101 41,047 -3,619 -8.10 4,210 9.55 0.0130
2025-05-13 2025-03-31 13F IRON MTN INC DEL COM 46284V101 44,666 -286 -0.64 3,843 -18.65 0.0128
2025-01-31 2024-12-31 13F IRON MTN INC DEL COM 46284V101 44,952 1,937 4.50 4,725 -7.57 0.0155
2024-11-06 2024-09-30 13F IRON MTN INC DEL COM 46284V101 43,015 3,306 8.33 5,111 43.65 0.0166
2024-08-01 2024-06-30 13F IRON MTN INC DEL COM 46284V101 39,709 -1,930 -4.64 3,559 6.56 0.0127
2024-05-09 2024-03-31 13F IRON MTN INC DEL COM 46284V101 41,639 1,219 3.02 3,340 18.07 0.0116
2024-02-13 2023-12-31 13F IRON MTN INC DEL COM 46284V101 40,420 -1,667 -3.96 2,829 13.03 0.0106
2023-10-30 2023-09-30 13F IRON MTN INC DEL COM 46284V101 42,087 -41 -0.10 2,502 4.55 0.0104
2023-08-14 2023-06-30 13F IRON MTN INC DEL COM 46284V101 42,128 -422 -0.99 2,394 6.31 0.0092
2023-05-12 2023-03-31 13F IRON MTN INC DEL COM 46284V101 42,550 1,036 2.50 2,251 8.80 0.0089
2023-02-13 2022-12-31 13F IRON MTN INC DEL COM 46284V101 41,514 3,066 7.97 2,069 22.35 0.0087
2022-11-03 2022-09-30 13F IRON MTN INC DEL COM 46284V101 38,448 3,415 9.75 1,691 -0.88 0.0074
2022-08-09 2022-06-30 13F IRON MTN INC COM 46284V101 35,033 -22,888 -39.52 1,706 -46.84 0.0069
2022-05-06 2022-03-31 13F IRON MTN INC COM 46284V101 57,921 30,803 113.59 3,209 126.15 0.0113
2022-02-08 2021-12-31 13F IRON MTN INC COM 46284V101 27,118 1,605 6.29 1,419 27.95 0.0052
2021-11-09 2021-09-30 13F IRON MTN INC COM 46284V101 25,513 695 2.80 1,109 5.62 0.0045
2021-08-16 2021-06-30 13F IRON MTN INC COM 46284V101 24,818 303 1.24 1,050 15.77 0.0042
2021-05-14 2021-03-31 13F IRON MTN INC COM 46284V101 24,515 -317 -1.28 907 23.91 0.0039
2021-02-03 2020-12-31 13F IRON MTN INC COM 46284V101 24,832 0 0.00 732 10.08 0.0034
2020-11-05 2020-09-30 13F IRON MTN INC COM 46284V101 24,832 271 1.10 665 3.74 0.0034
2020-07-28 2020-06-30 13F IRON MTN INC COM 46284V101 24,561 410 1.70 641 11.48 0.0038
2020-04-30 2020-03-31 13F IRON MTN INC COM 46284V101 24,151 -1,643 -6.37 575 -30.05 0.0041
2020-02-14 2019-12-31 13F IRON MTN INC COM 46284V101 25,794 -129 -0.50 822 -2.14 0.0046
2019-10-30 2019-09-30 13F IRON MTN INC COM 46284V101 25,923 -499 -1.89 840 1.57 0.0049
2019-08-05 2019-06-30 13F IRON MTN INC COM 46284V101 26,422 143 0.54 827 -11.27 0.0049
2019-05-06 2019-03-31 13F IRON MTN INC COM 46284V101 26,279 -1,807 -6.43 932 2.42 0.0058
2019-02-12 2018-12-31 13F IRON MTN INC COM 46284V101 28,086 -374 -1.31 910 -7.33 0.0067
2018-11-02 2018-09-30 13F IRON MTN INC COM 46284V101 28,460 153 0.54 982 -0.91 0.0061
2018-08-09 2018-06-30 13F IRON MTN INC COM 46284V101 28,307 2,046 7.79 991 14.83 0.0062
2018-04-30 2018-03-31 13F IRON MTN INC COM 46284V101 26,261 -296 -1.11 863 -13.87 0.0056
2018-02-02 2017-12-31 13F IRON MTN INC COM 46284V101 26,557 -775 -2.84 1,002 -5.74 0.0061
2017-11-06 2017-09-30 13F IRON MTN INC COM 46284V101 27,332 2,506 10.09 1,063 24.62 0.0067
2017-07-27 2017-06-30 13F IRON MTN INC COM 46284V101 24,826 651 2.69 853 -1.04 0.0059
2017-05-12 2017-03-31 13F IRON MTN INC COM 46284V101 24,175 -401 -1.63 862 8.02 0.0059
2017-02-08 2016-12-31 13F IRON MTN INC COM 46284V101 24,576 252 1.04 798 -12.60 0.0057
2016-10-19 2016-09-30 13F IRON MTN INC COM 46284V101 24,324 -1,920 -7.32 913 -12.63 0.0067
2016-08-02 2016-06-30 13F IRON MTN INC COM 46284V101 26,244 3,174 13.76 1,045 33.63 0.0079
2016-05-09 2016-03-31 13F IRON MTN INC COM 46284V101 23,070 491 2.17 782 28.20 0.0059
2016-02-02 2015-12-31 13F IRON MTN INC COM 46284V101 22,579 518 2.35 610 -10.82 0.0050
2015-11-03 2015-09-30 13F IRON MTN INC COM 46284V101 22,061 95 0.43 684 0.44 0.0055
2015-08-06 2015-06-30 13F IRON MTN INC COM 46284V101 21,966 895 4.25 681 -11.44 0.0047
2015-05-08 2015-03-31 13F IRON MTN INC COM 46284V101 21,071 -577 -2.67 769 -8.12 0.0055
2015-02-10 2014-12-31 13F IRON MTN COM 462846106 21,648 -1,248 -5.45 837 11.90 0.0056
2014-11-05 2014-09-30 13F IRON MTN COM 462846106 22,896 -30 -0.13 748 -8.00 0.0045
2014-08-01 2014-06-30 13F IRON MTN COM 462846106 22,926 -732 -3.09 813 24.69 0.0046
2014-05-09 2014-03-31 13F IRON MTN COM 462846106 23,658 -344 -1.43 652 -10.44 0.0038
2014-02-04 2013-12-31 13F IRON MTN COM 462846106 24,002 -1,897 -7.32 728 4.00 0.0045
2013-10-29 2013-09-30 13F IRON MTN COM 462846106 25,899 53 0.21 700 1.74 0.0045
2013-10-02 2013-06-30 13F/A-1 IRON MTN COM 462846106 25,846 25,846 688 0.0047
2013-08-09 2013-06-30 13F IRON MTN COM 462846106 25,846 688 0.0047
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.