Iron Mountain Incorporated
DE ˙ DB ˙ US46284V1017
108,60 € ↓ -0,40 (-0,37%)
2026-05-29
AKTIENPREIS
SecurityDE:I5M / Iron Mountain Incorporated
InstitutionOppenheimer & Co Inc
Latest Disclosed Ownership5,746 shares
Latest Disclosed Value $ 586,896
Oppenheimer & Co Inc reports 0.33% decrease in ownership of I5M / Iron Mountain Incorporated

On April 23, 2026 - Oppenheimer & Co Inc filed a 13F-HR form disclosing ownership of 5,746 shares of Iron Mountain Incorporated (DE:I5M) valued at $510,130 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 5,765 shares of Iron Mountain Incorporated. This represents a change in shares of -0.33% during the quarter. The current value of the position is $624,016 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)
2026-04-23 2026-03-31 13F IRON MTN INC DEL COM 46284V101 5,746 -19 -0.33 587 22.59 0.0071
2026-02-02 2025-12-31 13F IRON MTN INC DEL COM 46284V101 5,765 -3,226 -35.88 478 -47.82 0.0068
2025-11-06 2025-09-30 13F IRON MTN INC DEL COM 46284V101 8,991 -169 -1.84 917 -2.45 0.0112
2025-07-31 2025-06-30 13F IRON MTN INC DEL COM 46284V101 9,160 186 2.07 940 21.63 0.0124
2025-04-23 2025-03-31 13F IRON MTN INC DEL COM 46284V101 8,974 -4,012 -30.89 772 -43.40 0.0117
2025-02-05 2024-12-31 13F IRON MTN INC DEL COM 46284V101 12,986 -6,206 -32.34 1,365 -40.18 0.0204
2024-11-05 2024-09-30 13F IRON MTN INC DEL COM 46284V101 19,192 5,086 36.06 2,281 80.38 0.0348
2024-08-08 2024-06-30 13F IRON MTN INC DEL COM 46284V101 14,106 2,620 22.81 1,264 37.24 0.0201
2024-05-07 2024-03-31 13F IRON MTN INC DEL COM 46284V101 11,486 -36 -0.31 921 14.27 0.0153
2024-02-13 2023-12-31 13F IRON MTN INC DEL COM 46284V101 11,522 4,208 57.53 806 85.71 0.0148
2023-11-08 2023-09-30 13F IRON MTN INC DEL COM 46284V101 7,314 -167 -2.23 435 2.12 0.0090
2023-08-03 2023-06-30 13F IRON MTN INC DEL COM 46284V101 7,481 1,092 17.09 425 25.74 0.0085
2023-05-10 2023-03-31 13F IRON MTN INC DEL COM 46284V101 6,389 -23 -0.36 338 5.96 0.0072
2023-02-08 2022-12-31 13F IRON MTN INC DEL COM 46284V101 6,412 61 0.96 320 13.93 0.0073
2022-11-14 2022-09-30 13F IRON MTN INC DEL COM 46284V101 6,351 -9,164 -59.07 280 -62.91 0.0065
2022-08-08 2022-06-30 13F IRON MTN INC COM 46284V101 15,515 -7,371 -32.21 755 -40.46 0.0163
2022-05-12 2022-03-31 13F IRON MTN INC COM 46284V101 22,886 -7,305 -24.20 1,268 -19.75 0.0229
2022-02-02 2021-12-31 13F IRON MTN INC COM 46284V101 30,191 -1,295 -4.11 1,580 15.50 0.0276
2021-11-12 2021-09-30 13F IRON MTN INC COM 46284V101 31,486 14,526 85.65 1,368 90.53 0.0256
2021-08-03 2021-06-30 13F IRON MTN INC COM 46284V101 16,960 5,224 44.51 718 65.06 0.0129
2021-05-10 2021-03-31 13F IRON MTN INC COM 46284V101 11,736 -9,922 -45.81 435 -31.82 0.0087
2021-02-11 2020-12-31 13F IRON MTN INC COM 46284V101 21,658 9,918 84.48 638 102.54 0.0135
2020-11-13 2020-09-30 13F IRON MTN INC COM 46284V101 11,740 -289 -2.40 315 0.32 0.0079
2020-08-11 2020-06-30 13F IRON MTN INC COM 46284V101 12,029 -527 -4.20 314 5.02 0.0081
2020-05-08 2020-03-31 13F IRON MTN INC COM 46284V101 12,556 -24,703 -66.30 299 -74.81 0.0091
2020-02-07 2019-12-31 13F IRON MTN INC COM 46284V101 37,259 -17,429 -31.87 1,187 -32.98 0.0294
2019-10-31 2019-09-30 13F IRON MTN INC COM 46284V101 54,688 -101,820 -65.06 1,771 -63.84 0.0482
2019-08-09 2019-06-30 13F IRON MTN INC COM 46284V101 156,508 66,236 73.37 4,898 53.01 0.1331
2019-04-24 2019-03-31 13F IRON MTN INC COM 46284V101 90,272 64,857 255.19 3,201 288.94 0.0855
2019-01-29 2018-12-31 13F IRON MTN INC COM 46284V101 25,415 9 0.04 823 -6.16 0.0257
2018-10-26 2018-09-30 13F IRON MTN INC COM 46284V101 25,406 461 1.85 877 0.34 0.0223
2018-08-10 2018-06-30 13F IRON MTN INC COM 46284V101 24,945 91 0.37 874 6.98 0.0237
2018-05-01 2018-03-31 13F IRON MTN INC COM 46284V101 24,854 6,964 38.93 817 21.04 0.0210
2018-02-07 2017-12-31 13F IRON MTN INC COM 46284V101 17,890 417 2.39 675 -0.74 0.0174
2017-11-09 2017-09-30 13F IRON MTN INC COM 46284V101 17,473 118 0.68 680 14.09 0.0182
2017-08-09 2017-06-30 13F IRON MTN INC COM 46284V101 17,355 5,702 48.93 596 43.61 0.0164
2017-05-15 2017-03-31 13F IRON MTN INC COM 46284V101 11,653 2,243 23.84 415 36.07 0.0117
2017-02-01 2016-12-31 13F IRON MTN INC COM 46284V101 9,410 2,018 27.30 305 10.11 0.0089
2016-11-07 2016-09-30 13F IRON MTN INC COM 46284V101 7,392 -4,522 -37.96 277 -41.68 0.0081
2016-08-08 2016-06-30 13F IRON MTN INC COM 46284V101 11,914 1,830 18.15 475 39.30 0.0142
2016-04-26 2016-03-31 13F IRON MTN INC COM 46284V101 10,084 10,084 0.00 341 0.0104
2015-08-12 2015-06-30 13F IRON MTN INC COM 46284V101 0 -6,874 -100.00 0 -100.00
2015-05-08 2015-03-31 13F IRON MTN INC COM 46284V101 6,874 -8,696 -55.85 251 -58.31 0.0068
2015-02-10 2014-12-31 13F IRON MTN COM 462846106 15,570 1,477 10.48 602 30.87 0.0173
2014-11-12 2014-09-30 13F IRON MTN COM 462846106 14,093 5,135 57.32 460 45.11 0.0137
2014-08-14 2014-06-30 13F IRON MTN COM 462846106 8,958 0 0.00 317 28.34 0.0095
2014-05-09 2014-03-31 13F IRON MTN COM 462846106 8,958 500 5.91 247 -3.89 0.0074
2014-02-12 2013-12-31 13F IRON MTN COM 462846106 8,458 -2,000 -19.12 257 -9.19 0.0082
2013-11-01 2013-09-30 13F IRON MTN COM 462846106 10,458 0 0.00 283 1.80 0.0099
2013-08-14 2013-06-30 13F IRON MTN COM 462846106 10,458 10,458 278 0.0107
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.