Iron Mountain Incorporated
DE ˙ DB ˙ US46284V1017
111,85 € ↑2,30 (2,10%)
2026-06-05
DEL PRIS
SecurityDE:I5M / Iron Mountain Incorporated
InstitutionCornerstone Wealth Management, LLC
Latest Disclosed Ownership4,151 shares
Latest Disclosed Value $ 424,020
Cornerstone Wealth Management, LLC reports 0.75% increase in ownership of I5M / Iron Mountain Incorporated

On April 23, 2026 - Cornerstone Wealth Management, LLC filed a 13F-HR form disclosing ownership of 4,151 shares of Iron Mountain Incorporated (DE:I5M) valued at $368,526 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 4,120 shares of Iron Mountain Incorporated. This represents a change in shares of 0.75% during the quarter. The current value of the position is $464,289 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 4,151 31 0.75 424 24.34 0.0212
2026-02-05 2025-12-31 13F IRON MTN INC DEL COM 46284V101 4,120 0 0.00 342 -18.62 0.0178
2025-11-04 2025-09-30 13F IRON MTN INC DEL COM 46284V101 4,120 1 0.02 420 -0.71 0.0232
2025-08-12 2025-06-30 13F IRON MTN INC DEL COM 46284V101 4,119 -288 -6.54 423 11.35 0.0257
2025-04-18 2025-03-31 13F IRON MTN INC DEL COM 46284V101 4,407 288 6.99 379 -12.27 0.0257
2025-01-21 2024-12-31 13F IRON MTN INC DEL COM 46284V101 4,119 0 0.00 433 -11.66 0.0292
2024-10-16 2024-09-30 13F IRON MTN INC DEL COM 46284V101 4,119 1 0.02 489 32.52 0.0345
2024-07-16 2024-06-30 13F IRON MTN INC DEL COM 46284V101 4,118 -626 -13.20 369 -2.89 0.0284
2024-04-19 2024-03-31 13F IRON MTN INC DEL COM 46284V101 4,744 1 0.02 380 14.80 0.0308
2024-01-10 2023-12-31 13F IRON MTN INC DEL COM 46284V101 4,743 -99 -2.04 332 15.33 0.0285
2023-11-07 2023-09-30 13F IRON MTN INC DEL COM 46284V101 4,842 497 11.44 288 16.67 0.0272
2023-07-14 2023-06-30 13F IRON MTN INC DEL COM 46284V101 4,345 4,345 247 0.0220
2019-02-13 2018-12-31 13F IRON MTN INC COM 46284V101 0 -21,068 -100.00 0 -100.00
2018-10-19 2018-09-30 13F IRON MTN INC COM 46284V101 21,068 892 4.42 550 -4.84 0.0069
2018-07-20 2018-06-30 13F IRON MTN INC COM 46284V101 20,176 20,176 578 0.0065
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.