Iron Mountain Incorporated
US ˙ NYSE ˙ US46284V1017

SecurityIRM / Iron Mountain Incorporated
InstitutionBlackRock Variable Series Funds, Inc. - BlackRock Managed Volatility V.I. Fund Class I
Latest Disclosed Ownership2,300 shares
Latest Disclosed Value $ 235,911
BlackRock Variable Series Funds, Inc. - BlackRock Managed Volatility V.I. Fund Class I reports 37.23% increase in ownership of IRM / Iron Mountain Incorporated

On August 28, 2025 - BlackRock Variable Series Funds, Inc. - BlackRock Managed Volatility V.I. Fund Class I filed a NPORT-P form disclosing ownership of 2,300 shares of Iron Mountain Incorporated (US:IRM) valued at $235,911 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 27, 2025 disclosing 1,676 shares of Iron Mountain Incorporated. This represents a change in shares of 37.23% during the quarter. The current value of the position is $266,869 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)
2025-08-28 2025-06-30 NP Iron Mountain EC US46284V1017 2,300 624 37.23 236 63.19 0.1553
2025-05-27 2025-03-31 NP Iron Mountain EC US46284V1017 1,676 1,053 169.02 144 121.54 0.0962
2025-02-27 2024-12-31 NP Iron Mountain EC US46284V1017 623 224 56.14 65 195.45 0.0405
2023-08-25 2023-06-30 NP Iron Mountain EC US46284V1017 399 -562 -58.48 23 -53.19 0.0133
2023-02-24 2022-12-31 NP Iron Mountain EC US46284V1017 961 0 0.00 48 11.90 0.0275
2022-11-28 2022-09-30 NP Iron Mountain EC US46284V1017 961 263 37.68 42 27.27 0.0248
2022-08-26 2022-06-30 NP Iron Mountain EC US46284V1017 698 -430 -38.12 34 -46.77 0.0191
2022-05-25 2022-03-31 NP Iron Mountain EC US46284V1017 1,128 403 55.59 63 67.57 0.0315
2022-02-25 2021-12-31 NP Iron Mountain EC US46284V1017 725 -300 -29.27 38 -15.91 0.0177
2021-11-26 2021-09-30 NP Iron Mountain EC US46284V1017 1,025 286 38.70 45 41.94 0.0204
2021-08-24 2021-06-30 NP Iron Mountain EC US46284V1017 739 3 0.41 31 14.81 0.0142
2021-05-25 2021-03-31 NP Iron Mountain EC US46284V1017 736 326 79.51 27 125.00 0.0124
2021-02-24 2020-12-31 NP Iron Mountain EC US46284V1017 410 0 0.00 12 20.00 0.0054
2020-11-24 2020-09-30 NP Iron Mountain EC US46284V1017 410 -116 -22.05 11 -23.08 0.0052
2020-08-24 2020-06-30 NP Iron Mountain EC US46284V1017 526 526 14 0.0066
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.