IRON MOUNTAIN INC IRM
CIK 0001020569 · CUSIP 46284V101
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | VANGUARD GROUP INC CIK 102909 · View history | $3.72B 46,377,234 shares | 0.07% | +102.12K(+0.2%)Added | SEC filing ↗ May 10, 2024 | ▾ |
| 02 | COHEN & STEERS, INC. CIK 1284812 · View history | $1.90B 23,655,038 shares | 3.97% | +1.18M(+5.2%)Added | SEC filing ↗ May 15, 2024 | ▾ |
| 03 | BlackRock Inc. CIK 1364742 · View history | $1.85B 23,108,831 shares | 0.04% | -163.96K(-0.7%)Reduced | SEC filing ↗ May 10, 2024 | ▾ |
| 04 | STATE STREET CORP CIK 93751 · View history | $1.12B 13,811,808 shares | 0.05% | +18.87K(+0.1%)Added | SEC filing ↗ May 15, 2024 | ▾ |
| 05 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $587.07M 7,320,486 shares | 0.05% | +255.71K(+3.6%)Added | SEC filing ↗ May 13, 2024 | ▾ |
| 06 | Daiwa Securities Group Inc. CIK 1481045 · View history | $365.93M 4,562,165 shares | 2.06% | +475.85K(+11.6%)Added | SEC filing ↗ May 2, 2024 | ▾ |
| 07 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $343.83M 4,286,593 shares | 0.09% | -1.81K(0.0%)Reduced | SEC filing ↗ May 10, 2024 | ▾ |
| 08 | Capital World Investors CIK 1422849 · View history | $330.15M 4,116,123 shares | 0.05% | -956(0.0%)Reduced | SEC filing ↗ May 14, 2024 | ▾ |
| 09 | DEUTSCHE BANK AG\ CIK 948046 · Amended · View history | $308.98M 3,852,147 shares | 0.14% | -827.06K(-17.7%)Reduced | SEC filing ↗ Jun 2, 2025 | ▾ |
| 10 | MORGAN STANLEY CIK 895421 · Amended · View history | $277.40M 3,458,435 shares | 0.02% | -227.37K(-6.2%)Reduced | SEC filing ↗ Oct 17, 2024 | ▾ |
| 11 | NORGES BANK CIK 1374170 · Amended · View history | $267.79M 3,338,601 shares | 0.04% | +74.94K(+2.3%)Added | SEC filing ↗ May 14, 2024 | ▾ |
| 12 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history | $258.69M 3,225,161 shares | 0.06% | +67.48K(+2.1%)Added | SEC filing ↗ May 9, 2024 | ▾ |
| 13 | Pictet Asset Management Holding SA CIK 1993888 · View history | $247.73M 3,088,633 shares | 0.27% | -297.16K(-8.8%)Reduced | SEC filing ↗ May 14, 2024 | ▾ |
| 14 | FMR LLC CIK 315066 · View history | $238.10M 2,968,422 shares | 0.02% | -554.46K(-15.7%)Reduced | SEC filing ↗ May 13, 2024 | ▾ |
| 15 | NORTHERN TRUST CORP CIK 73124 · View history | $233.86M 2,915,624 shares | 0.04% | -214.68K(-6.9%)Reduced | SEC filing ↗ May 14, 2024 | ▾ |
| 16 | Amundi CIK 1330387 · View history | $221.57M 2,977,334 shares | 0.10% | +536.80K(+22.0%)Added | SEC filing ↗ May 15, 2024 | ▾ |
| 17 | WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history | $212.43M 2,648,454 shares | 0.04% | -280.18K(-9.6%)Reduced | SEC filing ↗ May 15, 2024 | ▾ |
| 18 | JPMORGAN CHASE & CO CIK 19617 · Amended · View history | $196.92M 2,455,076 shares | 0.02% | +359.82K(+17.2%)Added | SEC filing ↗ Dec 26, 2024 | ▾ |
| 19 | Legal & General Group Plc CIK 764068 · Amended · View history | $173.53M 2,163,415 shares | 0.05% | +10.48K(+0.5%)Added | SEC filing ↗ May 29, 2025 | ▾ |
| 20 | Bank of New York Mellon Corp CIK 1390777 · View history | $170.02M 2,119,675 shares | 0.03% | -115.96K(-5.2%)Reduced | SEC filing ↗ Apr 25, 2024 | ▾ |
Showing 20 / 938 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
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