Iron Mountain — Institutional Ownership
Which tracked institutions hold IRM, and how they changed the position last quarter. Latest holdings as of Sep 30, 2026. Source: SEC 13-F filings.
12
Funds holding
$434390792
Total value held
Buying
7 added/new · 3 reduced
| # | Institution | Value | Shares | Δ Shares | Change (QoQ) |
|---|---|---|---|---|---|
| 1 | Ameriprise Financial Inc | $210902234 | 1668337 | +1668337 | NEW BUY |
| 2 | Bank Of New York Mellon Corp | $202105893 | 1600078 | -24758 | -1.52% |
| 3 | Adams Diversified Equity Fund, Inc. | $14368025 | 129500 | +26600 | +25.85% |
| 4 | Allstate Corp | $4064277 | 32177 | +9750 | +43.47% |
| 5 | Cohen & Steers, Inc. | $1518214 | 12019735 | -4149606 | -25.66% |
| 6 | Brookfield Corp /On/ | $664643 | 5262 | -182993 | -97.20% |
| 7 | Park National Corp /Oh/ | $405633 | 3656 | — | Held |
| 8 | First Financial Corp /In/ | $166425 | 1500 | — | Held |
| 9 | First Horizon Corp | $88417 | 700 | +700 | NEW BUY |
| 10 | Zions Bancorporation, National Association /Ut/ | $83617 | 662 | +662 | NEW BUY |
| 11 | First Bancorp, Inc /Me/ | $17557 | 139 | +139 | NEW BUY |
| 12 | Amalgamated Financial Corp. | $5857 | 105699 | +105699 | NEW BUY |
Aggregated across tracked institutional filers. Reported quarterly on SEC Form 13-F and may lag. For research only — not investment advice.