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Iron Mountain shares owned by BlackRock

Quarter-by-quarter ownership of Iron Mountain (IRM) shares owned by BlackRock from 13F filings

Historical chart of BlackRock investment in Iron Mountain

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All positions including Iron Mountain held by BlackRock consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Iron Mountain by BlackRock

Quarter filed Position value Share count Share price at filing
2025-09-30 $3.2B 32M 101.94
2025-06-30 $3.2B 31M 102.57
2025-03-31 $3.0B 35M 86.04
2024-12-31 $3.4B 32M 105.11
2024-09-30 $3.7B 31M 118.83