Iron Mountain Incorporated
DE ˙ DB ˙ US46284V1017
108,60 € ↓ -0,40 (-0,37%)
2026-05-29
AKTIENPREIS
SecurityDE:I5M / Iron Mountain Incorporated
InstitutionVanguard Group Inc
Latest Disclosed Ownership46,275,110 shares
Ownership 15.85%
Vanguard Group Inc ownership in I5M / Iron Mountain Incorporated

2024-02-13 - Vanguard Group Inc has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 46,275,110 shares of Iron Mountain Incorporated (DE:I5M). This represents 15.85 percent ownership of the company. In their previous filing dated 2023-02-09 , Vanguard Group Inc had reported owning 47,429,924 shares, indicating a decrease of -2.43 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2024-02-13 2024-02-13 13G/A 47,429,924 46,275,110 -2.43 15.85 -2.82
2023-02-09 2023-02-09 13G/A 48,432,157 47,429,924 -2.07 16.31 -2.51
2022-02-10 2022-02-10 13G/A 48,363,389 48,432,157 0.14 16.73 -0.30
2021-02-10 2021-02-10 13G/A 47,595,566 48,363,389 1.61 16.78 1.27
2020-02-11 2020-02-11 13G/A 43,875,177 47,595,566 8.48 16.57 8.16
2019-02-13 2019-02-13 13G/A 47,689,458 43,875,177 -8.00 15.32 -9.56
2018-02-09 2018-02-09 13G/A 42,354,229 47,689,458 12.60 16.94 5.41
2017-02-10 2017-02-10 13G/A 30,793,809 42,354,229 37.54 16.07 10.22
2016-02-10 2016-02-10 13G/A 30,793,809 14.58
2015-02-10 2015-02-10 13G/A 26,267,170 12.52
2014-12-10 2014-12-10 13G/A 25,954,389 12.38
2014-02-11 2014-02-11 13G 11,617,764 6.07
2013-02-11 2013-02-11 13G/A 8,963,634 4.72
2012-02-08 2012-02-08 13G 11,041,657 5.94

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-01-29 2025-12-31 13F IRON MTN INC DEL COM 46284V101 46,627,483 -625,617 -1.32 3,867,750 -19.71 0.0561
2025-11-07 2025-09-30 13F IRON MTN INC DEL COM 46284V101 47,253,100 188,213 0.40 4,816,981 -0.22 0.0721
2025-08-11 2025-06-30 13F IRON MTN INC DEL COM 46284V101 47,064,887 239,153 0.51 4,827,445 19.82 0.0781
2025-05-09 2025-03-31 13F IRON MTN INC DEL COM 46284V101 46,825,734 220,564 0.47 4,028,886 -17.76 0.0728
2025-02-11 2024-12-31 13F IRON MTN INC DEL COM 46284V101 46,605,170 1,332 0.00 4,898,669 -11.54 0.0853
2024-11-13 2024-09-30 13F IRON MTN INC DEL COM 46284V101 46,603,838 -39,514 -0.08 5,537,934 32.48 0.0992
2024-08-13 2024-06-30 13F IRON MTN INC DEL COM 46284V101 46,643,352 266,118 0.57 4,180,177 12.37 0.0803
2024-05-10 2024-03-31 13F IRON MTN INC DEL COM 46284V101 46,377,234 102,124 0.22 3,719,918 14.87 0.0737
2024-03-11 2023-12-31 13F/A-1 IRON MTN INC DEL COM 46284V101 46,275,110 -337,656 -0.72 3,238,332 16.86 0.0707
2024-02-14 2023-12-31 13F IRON MTN INC DEL COM 46284V101 46,275,110 -337,656 3,238,332 0.0615
2023-12-18 2023-09-30 13F/A-1 IRON MTN INC DEL COM 46284V101 46,612,766 -241,020 -0.51 2,771,129 4.09 0.0681
2023-11-14 2023-09-30 13F IRON MTN INC DEL COM 46284V101 46,612,766 -241,020 2,771,129 0.0681
2023-08-14 2023-06-30 13F IRON MTN INC DEL COM 46284V101 46,853,786 -812,878 -1.71 2,662,232 5.56 0.0631
2023-07-14 2023-03-31 13F/A-1 IRON MTN INC DEL COM 46284V101 47,666,664 236,740 0.50 2,522,043 6.67 0.0642
2023-05-15 2023-03-31 13F IRON MTN INC DEL COM 46284V101 47,666,664 236,740 2,522,043 0.0642
2023-02-10 2022-12-31 13F IRON MTN INC DEL COM 46284V101 47,429,924 -16,945 -0.04 2,364,382 13.33 0.0644
2022-11-14 2022-09-30 13F IRON MTN INC DEL COM 46284V101 47,446,869 -235,842 -0.49 2,086,239 -10.14 0.0614
2022-08-12 2022-06-30 13F IRON MTN INC COM 46284V101 47,682,711 -653,003 -1.35 2,321,672 -13.31 0.0653
2022-05-13 2022-03-31 13F IRON MTN INC COM 46284V101 48,335,714 -96,443 -0.20 2,678,281 5.67 0.0634
2022-02-14 2021-12-31 13F IRON MTN INC COM 46284V101 48,432,157 -201,911 -0.42 2,534,454 19.94 0.0575
2021-11-12 2021-09-30 13F IRON MTN INC COM 46284V101 48,634,068 129,949 0.27 2,113,150 2.95 0.0525
2021-08-13 2021-06-30 13F IRON MTN INC COM 46284V101 48,504,119 -118,109 -0.24 2,052,694 14.07 0.0511
2021-05-14 2021-03-31 13F IRON MTN INC COM 46284V101 48,622,228 258,839 0.54 1,799,508 26.21 0.0487
2021-02-12 2020-12-31 13F IRON MTN INC COM 46284V101 48,363,389 -115,131 -0.24 1,425,752 9.78 0.0414
2020-11-16 2020-09-30 13F IRON MTN INC COM 46284V101 48,478,520 -351,803 -0.72 1,298,740 1.90 0.0430
2020-08-14 2020-06-30 13F IRON MTN INC COM 46284V101 48,830,323 115,858 0.24 1,274,471 9.92 0.0452
2020-05-15 2020-03-31 13F IRON MTN INC COM 46284V101 48,714,465 1,118,899 2.35 1,159,405 -23.57 0.0494
2020-02-14 2019-12-31 13F IRON MTN INC COM 46284V101 47,595,566 978,112 2.10 1,516,872 0.46 0.0517
2019-11-14 2019-09-30 13F IRON MTN INC COM 46284V101 46,617,454 883,488 1.93 1,509,939 5.48 0.0560
2019-08-14 2019-06-30 13F IRON MTN INC COM 46284V101 45,733,966 1,111,513 2.49 1,431,474 -9.53 0.0539
2019-05-15 2019-03-31 13F IRON MTN INC COM 46284V101 44,622,453 747,276 1.70 1,582,312 11.27 0.0621
2019-02-14 2018-12-31 13F IRON MTN INC COM 46284V101 43,875,177 -26,671 -0.06 1,421,993 -6.17 0.0639
2018-12-13 2018-09-30 13F/A-2 IRON MTN INC COM 46284V101 43,901,848 138,607 0.32 1,515,491 -1.09 0.0592
2018-11-23 2018-09-30 13F/A-1 IRON MTN INC COM 46284V101 43,901,848 0 1,515,491 0.0592
2018-11-14 2018-09-30 13F IRON MTN INC COM 46284V101 43,901,848 138,607 1,515,491
2018-08-14 2018-06-30 13F IRON MTN INC COM 46284V101 43,763,241 -1,097,049 -2.45 1,532,151 3.94 0.0641
2018-05-15 2018-03-31 13F IRON MTN INC COM 46284V101 44,860,290 -2,829,168 -5.93 1,474,109 -18.07 0.0645
2018-02-14 2017-12-31 13F IRON MTN INC COM 46284V101 47,689,458 3,358,291 7.58 1,799,324 4.34 0.0787
2017-11-14 2017-09-30 13F IRON MTN INC COM 46284V101 44,331,167 932,457 2.15 1,724,483 15.65 0.0806
2017-08-24 2017-06-30 13F/A-1 IRON MTN INC COM 46284V101 43,398,710 151,039 0.35 1,491,180 -3.34 0.0734
2017-08-11 2017-06-30 13F IRON MTN INC COM 46284V101 43,398,710 151,039 1,491,180
2017-05-12 2017-03-31 13F IRON MTN INC COM 46284V101 43,247,671 893,442 2.11 1,542,644 12.14 0.0793
2017-02-14 2016-12-31 13F IRON MTN INC COM 46284V101 42,354,229 306,559 0.73 1,375,666 -12.82 0.0767
2016-11-14 2016-09-30 13F IRON MTN INC COM 46284V101 42,047,670 3,934,973 10.32 1,578,049 3.95 0.0927
2016-08-10 2016-06-30 13F IRON MTN INC COM 46284V101 38,112,697 6,510,415 20.60 1,518,029 41.66 0.0943
2016-05-13 2016-03-31 13F IRON MTN INC COM 46284V101 31,602,282 808,473 2.63 1,071,633 28.84 0.0694
2016-02-08 2015-12-31 13F IRON MTN INC COM 46284V101 30,793,809 1,515,161 5.17 831,740 -8.42 0.0559
2015-11-12 2015-09-30 13F/A-1 IRON MTN INC COM 46284V101 29,278,648 -10,397 -0.04 908,224 0.03 0.0386
2015-11-12 2015-09-30 13F/A-1 IRON MTN INC COM 46284V101 29,278,648 -10,397 908,224 0.0386
2015-11-12 2015-09-30 13F IRON MTN INC COM 46284V101 29,278,648 908,224
2015-08-13 2015-06-30 13F IRON MTN INC COM 46284V101 29,289,045 1,228,593 4.38 907,961 -11.30 0.0614
2015-05-15 2015-03-31 13F/A-1 IRON MTN INC COM 46284V101 28,060,452 1,793,282 6.83 1,023,646 0.80 0.0694
2015-05-14 2015-03-31 13F IRON MTN INC COM 46284V101 28,060,452 1,023,646
2015-02-12 2014-12-31 13F IRON MTN COM 462846106 26,267,170 13,458,422 105.07 1,015,489 142.82 0.0731
2014-11-12 2014-09-30 13F IRON MTN COM 462846106 12,808,748 441,863 3.57 418,206 -4.61 0.0326
2014-08-11 2014-06-30 13F IRON MTN COM 462846106 12,366,885 352,433 2.93 438,406 32.35 0.0345
2014-05-13 2014-03-31 13F IRON MTN COM 462846106 12,014,452 396,688 3.41 331,239 -6.06 0.0279
2014-02-12 2013-12-31 13F IRON MTN COM 462846106 11,617,764 209,953 1.84 352,599 14.39 0.0310
2013-11-07 2013-09-30 13F IRON MTN COM 462846106 11,407,811 311,734 2.81 308,238 4.39 0.0301
2013-08-13 2013-06-30 13F IRON MTN COM 462846106 11,096,077 11,096,077 295,266 0.0310
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.