Iron Mountain Incorporated
US ˙ NYSE ˙ US46284V1017

SecurityIRM / Iron Mountain Incorporated
InstitutionHunter Associates Investment Management Llc
Latest Disclosed Ownership2,099 shares
Latest Disclosed Value $ 214
Hunter Associates Investment Management Llc ownership in IRM / Iron Mountain Incorporated

On April 27, 2026 - Hunter Associates Investment Management Llc filed a 13F-HR form disclosing ownership of 2,099 shares of Iron Mountain Incorporated (US:IRM) valued at $214,392 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2025 disclosing 0 shares of Iron Mountain Incorporated. The current value of the position is $268,567 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-27 2026-03-31 13F IRON MTN INC NEW COM COM 46284V101 2,099 2,099 0 0.0283
2025-01-23 2024-12-31 13F IRON MTN INC NEW COM COM 46284V101 0 -2,199 -100.00 0 0.0000
2024-10-24 2024-09-30 13F IRON MTN INC NEW COM COM 46284V101 2,199 2,199 0 0.0404
2024-08-01 2024-06-30 13F IRON MTN INC NEW COM COM 46284V101 0 -10,700 -100.00 0 0.0000
2024-05-01 2024-03-31 13F IRON MTN INC NEW COM COM 46284V101 10,700 0 0.00 1 0.1443
2024-01-31 2023-12-31 13F IRON MTN INC NEW COM COM 46284V101 10,700 0 0.00 1 0.1369
2023-11-09 2023-09-30 13F IRON MTN INC NEW COM COM 46284V101 10,700 -200 -1.83 1 0.1297
2023-08-03 2023-06-30 13F IRON MTN INC NEW COM COM 46284V101 10,900 0 0.00 1 0.1208
2023-05-02 2023-03-31 13F IRON MTN INC NEW COM COM 46284V101 10,900 0 0.00 1 0.1237
2023-02-01 2022-12-31 13F IRON MTN INC NEW COM COM 46284V101 10,900 0 0.00 1 -100.00 0.1306
2022-11-02 2022-09-30 13F IRON MTN INC NEW COM COM 46284V101 10,900 0 0.00 477 -10.17 0.1235
2022-08-10 2022-06-30 13F IRON MTN INC NEW COM COM 46284V101 10,900 6,900 172.50 531 139.19 0.1310
2022-04-26 2022-03-31 13F IRON MTN INC NEW COM COM 46284V101 4,000 0 0.00 222 6.22 0.0715
2022-01-27 2021-12-31 13F IRON MTN INC NEW COM COM 46284V101 4,000 4,000 209 0.0598
2021-11-12 2021-09-30 13F IRON MTN INC NEW COM COM 46284V101 0 -10,999 -100.00 0 -100.00
2021-08-05 2021-06-30 13F IRON MTN INC NEW COM COM 46284V101 10,999 0 0.00 407 0.00 0.0941
2021-05-10 2021-03-31 13F IRON MTN INC NEW COM COM 46284V101 10,999 3,800 52.79 407 91.98 0.0941
2021-01-29 2020-12-31 13F IRON MTN INC NEW COM COM 46284V101 7,199 7,199 212 0.0521
2020-08-13 2020-06-30 13F IRON MTN INC NEW COM COM 46284V101 0 -25,349 -100.00 0 -100.00
2020-05-11 2020-03-31 13F IRON MTN INC NEW COM COM 46284V101 25,349 -1,350 -5.06 603 -29.14 0.2337
2020-02-07 2019-12-31 13F IRON MTN INC NEW COM COM 46284V101 26,699 -100 -0.37 851 -1.96 0.2642
2019-11-08 2019-09-30 13F IRON MTN INC NEW COM COM 46284V101 26,799 -1,350 -4.80 868 -1.48 0.2984
2019-08-08 2019-06-30 13F IRON MTN INC NEW COM COM 46284V101 28,149 3,700 15.13 881 1.61 0.3031
2019-05-10 2019-03-31 13F IRON MTN INC NEW COM COM 46284V101 24,449 3,350 15.88 867 26.75 0.3036
2019-02-11 2018-12-31 13F IRON MTN INC NEW COM COM 46284V101 21,099 -600 -2.77 684 -8.68 0.2782
2018-11-09 2018-09-30 13F IRON MTN INC NEW COM COM 46284V101 21,699 0 0.00 749 -1.45 0.2583
2018-08-10 2018-06-30 13F IRON MTN INC NEW COM COM 46284V101 21,699 3,800 21.23 760 29.25 0.2745
2018-05-15 2018-03-31 13F/A-1 IRON MTN INC NEW COM COM 46284V101 17,899 3,500 24.31 588 8.29 0.2196
2018-05-14 2018-03-31 13F IRON MTN INC NEW COM COM 46284V101 14,699 555
2018-02-15 2017-12-31 13F IRON MTN INC NEW COM COM 46284V101 14,399 1,000 7.46 543 4.22 0.2000
2017-11-13 2017-09-30 13F IRON MTN INC NEW COM COM 46284V101 13,399 0 0.00 521 13.26 0.2030
2017-08-11 2017-06-30 13F IRON MTN INC NEW COM COM 46284V101 13,399 3,100 30.10 460 25.34 0.1870
2017-05-10 2017-03-31 13F IRON MTN INC NEW COM COM 46284V101 10,299 10,299 367 0.1544
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.