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 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $981.53M 8,878,533 shares | 0.05% | +229.28K(+2.70%)Added | SEC filing ↗ Nov 6, 2026 | ▾ |
| 02 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $518.59M 4,674,061 shares | 0.09% | +48.38K(+1.00%)Added | SEC filing ↗ Nov 4, 2026 | ▾ |
| 03 | PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history | $319.58M 2,880,424 shares | 0.16% | -1.49M(-34.10%)Reduced | SEC filing ↗ Nov 2, 2026 | ▾ |
| 04 | DEUTSCHE BANK AG\ CIK 948046 · View history | $266.84M 2,405,033 shares | 0.07% | -644.05K(-21.10%)Reduced | SEC filing ↗ Nov 6, 2026 | ▾ |
| 05 | Daiwa Securities Group Inc. CIK 1481045 · View history | $215.43M 1,941,681 shares | 0.46% | +80.13K(+4.30%)Added | SEC filing ↗ Oct 29, 2026 | ▾ |
| 06 | Bank of New York Mellon Corp CIK 1390777 · View history | $177.14M 1,596,556 shares | 0.03% | -3.52K(-0.20%)Reduced | SEC filing ↗ Nov 5, 2026 | ▾ |
| 07 | Amundi CIK 1330387 · View history | $172.64M 1,556,055 shares | 0.03% | +387.63K(+33.20%)Added | SEC filing ↗ Nov 6, 2026 | ▾ |
| 08 | DUFF & PHELPS INVESTMENT MANAGEMENT CO CIK 765443 · View history | $161.09M 1,451,890 shares | 1.66% | -3.54K(-0.20%)Reduced | SEC filing ↗ Nov 6, 2026 | ▾ |
| 09 | Russell Investments Group, Ltd. CIK 1692234 · View history | $124.17M 1,119,086 shares | 0.10% | -284.54K(-20.30%)Reduced | SEC filing ↗ Nov 6, 2026 | ▾ |
| 10 | Pictet Asset Management Holding SA CIK 1993888 · View history | $119.95M 1,080,998 shares | 0.11% | +263.38K(+32.20%)Added | SEC filing ↗ Nov 3, 2026 | ▾ |
| 11 | Mitsubishi UFJ Asset Management Co., Ltd. CIK 1466546 · View history | $115.50M 1,040,989 shares | 0.06% | +58.39K(+5.90%)Added | SEC filing ↗ Nov 5, 2026 | ▾ |
| 12 | Sumitomo Mitsui Trust Group, Inc. CIK 1475365 · View history | $94.05M 847,704 shares | 0.05% | -48.86K(-5.40%)Reduced | SEC filing ↗ Oct 29, 2026 | ▾ |
| 13 | BARCLAYS PLC CIK 312069 · View history | $87.36M 787,348 shares | 0.03% | +44.01K(+5.90%)Added | SEC filing ↗ Nov 6, 2026 | ▾ |
| 14 | Vontobel Holding Ltd. CIK 1588340 · View history | $78.95M 711,596 shares | 0.31% | -1.21M(-62.90%)Reduced | SEC filing ↗ Oct 16, 2026 | ▾ |
| 15 | Aberdeen Group plc CIK 1716774 · View history | $77.52M 698,722 shares | 0.11% | +7.21K(+1.00%)Added | SEC filing ↗ Nov 6, 2026 | ▾ |
| 16 | LPL Financial LLC CIK 1403438 · View history | $71.53M 644,666 shares | 0.02% | +4.28K(+0.70%)Added | SEC filing ↗ Nov 6, 2026 | ▾ |
| 17 | Welch & Forbes LLC CIK 105495 · View history | $70.00M 630,927 shares | 0.84% | -8.39K(-1.30%)Reduced | SEC filing ↗ Nov 4, 2026 | ▾ |
| 18 | Asset Management One Co., Ltd. CIK 1068855 · View history | $61.71M 556,154 shares | 0.15% | +1.55K(+0.30%)Added | SEC filing ↗ Oct 27, 2026 | ▾ |
| 19 | VIRGINIA RETIREMENT SYSTEMS ET Al CIK 1005354 · View history | $49.02M 441,803 shares | 0.30% | 0(0.00%)Unchanged | SEC filing ↗ Oct 28, 2026 | ▾ |
| 20 | CITIGROUP INC CIK 831001 · View history | $43.34M 390,650 shares | 0.02% | -31.87K(-7.50%)Reduced | SEC filing ↗ Nov 4, 2026 | ▾ |
Showing 20 / 616 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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