Iron Mountain Incorporated
GB ˙ LSE ˙ US46284V1017
126,74 $ ↓ -1,89 (-1,47%)
2026-06-05
DEL PRIS
SecurityGB:0JDP / Iron Mountain Incorporated
InstitutionSmartleaf Asset Management LLC
Latest Disclosed Ownership1,650 shares
Latest Disclosed Value $ 161,040
Smartleaf Asset Management LLC reports 20.67% decrease in ownership of 0JDP / Iron Mountain Incorporated

On May 15, 2026 - Smartleaf Asset Management LLC filed a 13F-HR form disclosing ownership of 1,650 shares of Iron Mountain Incorporated (GB:0JDP) valued at $167,963 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,080 shares of Iron Mountain Incorporated. This represents a change in shares of -20.67% during the quarter. The current value of the position is $209,121 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)
2026-05-15 2026-03-31 13F IRON MTN INC DEL COM 46284V101 1,650 -430 -20.67 161 -6.94 0.0058
2026-02-13 2025-12-31 13F IRON MTN INC DEL COM 46284V101 2,080 -25 -1.19 173 -18.01 0.0066
2025-11-05 2025-09-30 13F IRON MTN INC DEL COM 46284V101 2,105 626 42.33 211 39.74 0.0131
2025-08-14 2025-06-30 13F IRON MTN INC DEL COM 46284V101 1,479 -191 -11.44 151 6.34 0.0133
2025-05-14 2025-03-31 13F IRON MTN INC DEL COM 46284V101 1,670 -123 -6.86 142 -23.24 0.0137
2025-02-05 2024-12-31 13F IRON MTN INC DEL COM 46284V101 1,793 147 8.93 186 -3.65 0.0190
2024-11-13 2024-09-30 13F IRON MTN INC DEL COM 46284V101 1,646 783 90.73 192 152.63 0.0233
2024-10-08 2024-06-30 13F/A-1 IRON MTN INC DEL COM 46284V101 863 -114 -11.67 77 -2.56 0.0126
2024-08-13 2024-06-30 13F IRON MTN INC DEL COM 46284V101 863 -114 77 0.0126
2024-10-07 2024-03-31 13F/A-1 IRON MTN INC DEL COM 46284V101 977 73 8.08 78 23.81 0.0151
2024-05-03 2024-03-31 13F IRON MTN INC DEL COM 46284V101 977 73 63 0.0151
2024-02-12 2023-12-31 13F IRON MTN INC DEL COM 46284V101 904 904 64 0.0171
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.