Iron Mountain Incorporated
GB ˙ LSE ˙ US46284V1017
126,74 $ ↓ -1,89 (-1,47%)
2026-06-05
DEL PRIS
SecurityGB:0JDP / Iron Mountain Incorporated
InstitutionUs Bancorp \de\
Latest Disclosed Ownership27,280 shares
Latest Disclosed Value $ 2,786,379
Us Bancorp \de\ reports 11.68% increase in ownership of 0JDP / Iron Mountain Incorporated

On May 14, 2026 - Us Bancorp \de\ filed a 13F-HR form disclosing ownership of 27,280 shares of Iron Mountain Incorporated (GB:0JDP) valued at $2,776,987 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 24,427 shares of Iron Mountain Incorporated. This represents a change in shares of 11.68% during the quarter. The current value of the position is $3,457,467 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)
2026-05-14 2026-03-31 13F IRON MTN INC DEL COM 46284V101 27,280 2,853 11.68 2,786 37.51 0.0010
2026-01-30 2025-12-31 13F IRON MTN INC DEL COM 46284V101 24,427 -1,783 -6.80 2,026 -24.15 0.0024
2025-11-12 2025-09-30 13F IRON MTN INC DEL COM 46284V101 26,210 419 1.62 2,672 0.98 0.0032
2025-07-24 2025-06-30 13F IRON MTN INC DEL COM 46284V101 25,791 1,500 6.18 2,645 26.62 0.0033
2025-05-08 2025-03-31 13F IRON MTN INC DEL COM 46284V101 24,291 1,539 6.76 2,090 -12.63 0.0028
2025-02-05 2024-12-31 13F IRON MTN INC DEL COM 46284V101 22,752 -158 -0.69 2,391 -12.16 0.0031
2024-10-28 2024-09-30 13F IRON MTN INC DEL COM 46284V101 22,910 -150 -0.65 2,722 31.75 0.0035
2024-08-07 2024-06-30 13F IRON MTN INC DEL COM 46284V101 23,060 938 4.24 2,067 16.46 0.0028
2024-05-08 2024-03-31 13F IRON MTN INC DEL COM 46284V101 22,122 -4,165 -15.84 1,774 -3.53 0.0025
2024-02-09 2023-12-31 13F IRON MTN INC DEL COM 46284V101 26,287 -1,116 -4.07 1,840 12.89 0.0027
2023-11-03 2023-09-30 13F IRON MTN INC DEL COM 46284V101 27,403 -2,304 -7.76 1,629 -3.44 0.0027
2023-08-10 2023-06-30 13F IRON MTN INC DEL COM 46284V101 29,707 811 2.81 1,688 10.41 0.0027
2023-05-09 2023-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 28,896 1,031 3.70 1,529 10.01 0.0026
2023-02-13 2022-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 27,865 -283 -1.01 1,389 12.20 0.0025
2022-10-27 2022-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 28,148 1,875 7.14 1,238 -3.21 0.0026
2022-08-01 2022-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 26,273 -408 -1.53 1,279 -13.52 0.0025
2022-05-11 2022-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 26,681 3,904 17.14 1,479 24.18 0.0025
2022-02-11 2021-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 22,777 -2,544 -10.05 1,191 8.27 0.0019
2021-11-10 2021-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 25,321 2,258 9.79 1,100 12.82 0.0021
2021-08-05 2021-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 23,063 452 2.00 975 16.35 0.0018
2021-04-28 2021-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 22,611 425 1.92 838 28.13 0.0017
2021-02-04 2020-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 22,186 6,203 38.81 654 52.80 0.0014
2020-11-10 2020-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 15,983 407 2.61 428 5.42 0.0010
2020-08-07 2020-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 15,576 -78 -0.50 406 9.14 0.0011
2020-05-13 2020-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 15,654 186 1.20 372 -24.39 0.0012
2020-02-04 2019-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 15,468 -50 -0.32 492 -2.19 0.0013
2019-11-08 2019-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 15,518 390 2.58 503 6.34 0.0014
2019-08-13 2019-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 15,128 287 1.93 473 -10.08 0.0013
2019-05-08 2019-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 14,841 -1,000 -6.31 526 2.53 0.0015
2019-02-13 2018-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 15,841 -639 -3.88 513 -9.84 0.0017
2018-10-31 2018-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 16,480 -1,402 -7.84 569 -9.11 0.0016
2018-08-08 2018-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 17,882 -4,999 -21.85 626 -16.76 0.0019
2018-05-08 2018-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 22,881 -16,340 -41.66 752 -49.15 0.0023
2018-02-02 2017-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 39,221 -799 -2.00 1,479 -5.01 0.0045
2017-11-13 2017-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 40,020 -1,360 -3.29 1,557 9.49 0.0050
2017-07-19 2017-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 41,380 -999 -2.36 1,422 -5.95 0.0047
2017-05-03 2017-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 42,379 590 1.41 1,512 11.42 0.0052
2017-02-08 2016-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 41,789 820 2.00 1,357 -11.71 0.0049
2016-11-04 2016-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 40,969 6,764 19.77 1,537 12.85 0.0057
2016-08-10 2016-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 34,205 1,504 4.60 1,362 22.81 0.0052
2016-05-13 2016-03-31 13F IRON MOUNTAIN OTHER 46284V101 32,701 7,451 29.51 1,109 62.61 0.0044
2016-02-10 2015-12-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 25,250 -2,737 -9.78 682 -21.43 0.0027
2015-11-16 2015-09-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 27,987 -5,784 -17.13 868 -17.10 0.0036
2015-08-10 2015-06-30 13F IRON MOUNTAIN COMMON STOCK 46284V101 33,771 2,545 8.15 1,047 -8.08 0.0041
2015-05-08 2015-03-31 13F IRON MOUNTAIN COMMON STOCK 46284V101 31,226 7,919 33.98 1,139 26.42 0.0044
2015-02-13 2014-12-31 13F IRON MOUNTAIN COMMON STOCK 462846106 23,307 3,145 15.60 901 36.93 0.0035
2014-11-14 2014-09-30 13F IRON MOUNTAIN COMMON STOCK 462846106 20,162 12,611 167.01 658 145.52 0.0027
2014-08-14 2014-06-30 13F IRON MOUNTAIN COMMON STOCK 462846106 7,551 123 1.66 268 31.37 0.0011
2014-05-14 2014-03-31 13F IRON MOUNTAIN COMMON STOCK 462846106 7,428 0 0.00 204 -9.33 0.0008
2014-02-13 2013-12-31 13F IRON MOUNTAIN COMMON STOCK 462846106 7,428 -217 -2.84 225 9.22 0.0009
2013-11-07 2013-09-30 13F IRON MOUNTAIN COMMON STOCK 462846106 7,645 -277 -3.50 206 -2.37 0.0009
2013-08-09 2013-06-30 13F IRON MOUNTAIN COMMON STOCK 462846106 7,922 7,922 211 0.0010
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.