Iron Mountain Incorporated
DE ˙ DB ˙ US46284V1017
111,85 € ↑2,30 (2,10%)
2026-06-05
DEL PRIS
SecurityDE:I5M / Iron Mountain Incorporated
InstitutionTexas Yale Capital Corp.
Latest Disclosed Ownership13,505 shares
Latest Disclosed Value $ 1,379,401
Texas Yale Capital Corp. ownership in I5M / Iron Mountain Incorporated

On May 4, 2026 - Texas Yale Capital Corp. filed a 13F-HR form disclosing ownership of 13,505 shares of Iron Mountain Incorporated (DE:I5M) valued at $1,198,974 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 13,505 shares of Iron Mountain Incorporated. This represents a change in shares of 0.00% during the quarter. The current value of the position is $1,510,534 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)
2026-05-04 2026-03-31 13F IRON MTN INC DEL COM 46284V101 13,505 0 0.00 1,379 23.13 0.0391
2026-02-10 2025-12-31 13F IRON MTN INC DEL COM 46284V101 13,505 8,350 161.98 1,120 113.33 0.0340
2025-11-07 2025-09-30 13F IRON MTN INC DEL COM 46284V101 5,155 0 0.00 526 -0.57 0.0165
2025-08-06 2025-06-30 13F IRON MTN INC DEL COM 46284V101 5,155 0 0.00 529 19.19 0.0173
2025-05-07 2025-03-31 13F IRON MTN INC DEL COM 46284V101 5,155 230 4.67 444 -14.31 0.0182
2025-02-13 2024-12-31 13F IRON MTN INC DEL COM 46284V101 4,925 0 0.00 518 -11.62 0.0208
2024-11-12 2024-09-30 13F IRON MTN INC DEL COM 46284V101 4,925 0 0.00 585 32.65 0.0254
2024-08-13 2024-06-30 13F IRON MTN INC DEL COM 46284V101 4,925 0 0.00 441 11.65 0.0210
2024-05-08 2024-03-31 13F IRON MTN INC DEL COM 46284V101 4,925 0 0.00 395 14.83 0.0175
2024-02-13 2023-12-31 13F IRON MTN INC DEL COM 46284V101 4,925 0 0.00 345 17.81 0.0164
2023-11-09 2023-09-30 13F IRON MTN INC DEL COM 46284V101 4,925 -275 -5.29 293 -1.02 0.0132
2023-08-03 2023-06-30 13F IRON MTN INC DEL COM 46284V101 5,200 0 0.00 295 7.27 0.0139
2023-05-10 2023-03-31 13F IRON MTN INC DEL COM 46284V101 5,200 0 0.00 275 6.18 0.0140
2023-02-13 2022-12-31 13F IRON MTN INC DEL COM 46284V101 5,200 0 0.00 259 13.10 0.0148
2022-11-08 2022-09-30 13F IRON MTN INC DEL COM 46284V101 5,200 0 0.00 229 -9.49 0.0147
2022-08-11 2022-06-30 13F IRON MTN INC COM 46284V101 5,200 0 0.00 253 -12.15 0.0164
2022-05-10 2022-03-31 13F IRON MTN INC COM 46284V101 5,200 -2,925 -36.00 288 -32.24 0.0157
2022-02-10 2021-12-31 13F IRON MTN INC COM 46284V101 8,125 0 0.00 425 20.40 0.0216
2021-11-08 2021-09-30 13F IRON MTN INC COM 46284V101 8,125 0 0.00 353 2.62 0.0200
2021-08-05 2021-06-30 13F IRON MTN INC COM 46284V101 8,125 0 0.00 344 14.29 0.0197
2021-05-12 2021-03-31 13F IRON MTN INC COM 46284V101 8,125 -2,650 -24.59 301 -5.35 0.0189
2021-02-10 2020-12-31 13F IRON MTN INC COM 46284V101 10,775 0 0.00 318 10.03 0.0214
2020-11-10 2020-09-30 13F IRON MTN INC COM 46284V101 10,775 500 4.87 289 7.84 0.0222
2020-07-31 2020-06-30 13F IRON MTN INC COM 46284V101 10,275 0 0.00 268 9.39 0.0218
2020-05-13 2020-03-31 13F IRON MTN INC COM 46284V101 10,275 0 0.00 245 -25.08 0.0241
2020-02-11 2019-12-31 13F IRON MTN INC COM 46284V101 10,275 0 0.00 327 -1.80 0.0224
2019-10-31 2019-09-30 13F IRON MTN INC COM 46284V101 10,275 0 0.00 333 3.42 0.0239
2019-07-24 2019-06-30 13F IRON MTN INC COM 46284V101 10,275 -10,275 -50.00 322 -55.77 0.0240
2019-05-10 2019-03-31 13F IRON MTN INC COM 46284V101 20,550 10,275 100.00 728 118.62 0.0291
2019-02-11 2018-12-31 13F IRON MTN INC COM 46284V101 10,275 275 2.75 333 -3.48 0.0301
2018-11-13 2018-09-30 13F IRON MTN INC COM 46284V101 10,000 0 0.00 345 -1.43 0.0279
2018-08-07 2018-06-30 13F IRON MTN INC COM 46284V101 10,000 -5,475 -35.38 350 -31.24 0.0301
2018-05-03 2018-03-31 13F IRON MTN INC COM 46284V101 15,475 -2,700 -14.86 509 -25.80 0.0438
2018-02-07 2017-12-31 13F IRON MTN INC COM 46284V101 18,175 -975 -5.09 686 -7.92 0.0591
2017-11-08 2017-09-30 13F IRON MTN INC COM 46284V101 19,150 0 0.00 745 13.22 0.0643
2017-08-03 2017-06-30 13F IRON MTN INC COM 46284V101 19,150 0 0.00 658 -3.66 0.0578
2017-05-03 2017-03-31 13F IRON MTN INC COM 46284V101 19,150 -5,400 -22.00 683 -14.30 0.0602
2017-02-13 2016-12-31 13F IRON MTN INC COM 46284V101 24,550 -6,100 -19.90 797 -30.70 0.0753
2016-11-14 2016-09-30 13F IRON MTN INC COM 46284V101 30,650 625 2.08 1,150 -3.85 0.1106
2016-08-12 2016-06-30 13F IRON MTN INC COM 46284V101 30,025 4,650 18.33 1,196 39.07 0.1189
2016-05-13 2016-03-31 13F IRON MTN INC COM 46284V101 25,375 1,225 5.07 860 31.90 0.0885
2016-05-10 2015-12-31 13F/A-1 IRON MTN INC COM 46284V101 24,150 11,500 90.91 652 66.33 0.0586
2016-02-05 2015-12-31 13F IRON MTN INC COM 46284V101 24,150 652
2016-05-10 2015-09-30 13F/A-1 IRON MTN INC COM 46284V101 12,650 12,650 392 0.0358
2015-11-10 2015-09-30 13F IRON MTN INC COM 46284V101 12,650 392
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.