Iron Mountain Inc. Major Shareholders & Ownership History
| Major Shareholder Name | Reporting Date | Shares Held | Market Value | Change in Shares | Ownership |
|---|---|---|---|---|---|
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 08/24/2026 | 54.89 M | $434.53 M | 12,879.22% | 18.49% |
| BLACKROCK, INC. | 08/07/2026 | 33.57 M | $4.24 B | 1.66% | 11.31% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 08/13/2026 | 25.57 M | $3.23 B | 2.21% | 8.61% |
| VANGUARD CAPITAL MANAGEMENT LLC | 08/13/2026 | 18.95 M | $2.39 B | 1.04% | 6.39% |
| STATE STREET CORP | 08/07/2026 | 17.63 M | $2.24 B | 0.47% | 5.94% |
| COHEN & STEERS, INC. | 08/14/2026 | 12.02 M | $1.52 B | -25.66% | 4.05% |
| GEODE CAPITAL MANAGEMENT, LLC | 08/12/2026 | 8.65 M | $1.09 B | 1.92% | 2.91% |
| FMR LLC | 08/13/2026 | 7.87 M | $994.36 M | 5.18% | 2.65% |
| DIMENSIONAL FUND ADVISORS LP | 08/11/2026 | 4.63 M | $584.31 M | 1.61% | 1.56% |
| MORGAN STANLEY | 08/13/2026 | 4.43 M | $559.16 M | -4.84% | 1.49% |
| PRINCIPAL FINANCIAL GROUP INC | 08/04/2026 | 4.37 M | $552.40 M | -4.22% | 1.47% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 08/14/2026 | 4.26 M | $538.52 M | 6.24% | 1.44% |
| SIXTH STREET PARTNERS MANAGEMENT COMPANY, L.P. | 08/14/2026 | 4.26 M | $538.52 M | 100.00% | 1.44% |
| NORTHERN TRUST CORP | 08/13/2026 | 4.22 M | $533.40 M | 1.75% | 1.42% |
| NORGES BANK | 08/12/2026 | 4.21 M | $532.36 M | 100.00% | 1.42% |
| INVESCO LTD. | 08/14/2026 | 4.07 M | $513.53 M | 3.68% | 1.37% |
| LEGAL & GENERAL GROUP PLC | 08/14/2026 | 3.24 M | $409.84 M | 3.50% | 1.09% |
| UBS ASSET MANAGEMENT AMERICAS INC | 08/13/2026 | 3.19 M | $403.38 M | 29,674.01% | 1.08% |
| DEUTSCHE BANK AG\ | 08/07/2026 | 3.05 M | $385.13 M | -1.39% | 1.03% |
| GOLDMAN SACHS GROUP INC | 08/14/2026 | 2.82 M | $356.54 M | 27.34% | 0.95% |
| CENTERSQUARE INVESTMENT MANAGEMENT LLC | 08/07/2026 | 2.32 M | $293.54 M | 0.60% | 0.78% |
| NUVEEN, LLC | 08/11/2026 | 2.22 M | $280.25 M | 7.27% | 0.75% |
| JPMORGAN CHASE & CO | 08/12/2026 | 2.21 M | $287.51 M | 4.18% | 0.75% |
| AQR CAPITAL MANAGEMENT LLC | 08/14/2026 | 2.13 M | $266.50 M | 15.22% | 0.72% |
| PRUDENTIAL FINANCIAL INC | 08/12/2026 | 1.97 M | $249.35 M | -18.29% | 0.67% |
| VONTOBEL HOLDING LTD. | 08/03/2026 | 1.92 M | $242.47 M | -9.32% | 0.65% |
| DAIWA SECURITIES GROUP INC. | 07/31/2026 | 1.86 M | $235.13 M | -40.09% | 0.63% |
| SELECT EQUITY GROUP, L.P. | 08/14/2026 | 1.74 M | $219.44 M | -2.37% | 0.59% |
| AMERIPRISE FINANCIAL INC | 08/14/2026 | 1.67 M | $210.90 M | -9.87% | 0.56% |
| VANGUARD FIDUCIARY TRUST CO | 08/13/2026 | 1.66 M | $209.50 M | 0.35% | 0.56% |
| ROYAL BANK OF CANADA | 08/14/2026 | 1.64 M | $207.21 M | 16.29% | 0.55% |
| BANK OF NEW YORK MELLON CORP | 08/06/2026 | 1.60 M | $202.11 M | -1.52% | 0.54% |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO | 08/13/2026 | 1.46 M | $183.84 M | -7.61% | 0.49% |
| RUSSELL INVESTMENTS GROUP, LTD. | 08/06/2026 | 1.40 M | $177.42 M | -3.54% | 0.47% |
| HSBC HOLDINGS PLC | 08/14/2026 | 1.35 M | $170.31 M | 5.89% | 0.45% |
| CONTOUR ASSET MANAGEMENT LLC | 08/14/2026 | 1.27 M | $161.01 M | -11.78% | 0.43% |
| CAPITAL WORLD INVESTORS | 08/12/2026 | 1.22 M | $153.74 M | -34.81% | 0.41% |
| AMUNDI | 08/11/2026 | 1.17 M | $147.58 M | 7.04% | 0.39% |
| AMERICAN CENTURY COMPANIES INC | 08/12/2026 | 1.15 M | $145.82 M | 41.52% | 0.39% |
| DEKABANK DEUTSCHE GIROZENTRALE | 08/05/2026 | 1.12 M | $114.24 M | 0.00% | 0.38% |
| BANK OF AMERICA CORP /DE/ | 08/14/2026 | 1.12 M | $141.32 M | -20.05% | 0.38% |
| CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC | 08/14/2026 | 1.07 M | $135.52 M | -13.33% | 0.36% |
| MITSUBISHI UFJ KOKUSAI ASSET MANAGEMENT CO., LTD. | 08/07/2026 | 982.60 K | $124.11 M | 8.17% | 0.33% |
| UBS GROUP AG | 08/13/2026 | 915.10 K | $115.59 M | 14.18% | 0.31% |
| SUMITOMO MITSUI TRUST GROUP, INC. | 07/30/2026 | 896.56 K | $113.24 M | -3.98% | 0.30% |
| SWISS NATIONAL BANK | 08/11/2026 | 839.06 K | $105.98 M | -3.27% | 0.28% |
| PICTET ASSET MANAGEMENT HOLDING SA | 07/30/2026 | 817.62 K | $103.33 M | -5.45% | 0.28% |
| CIBC BANCORP USA INC. | 08/13/2026 | 777.48 K | $98.24 M | -6.19% | 0.26% |
| BARCLAYS PLC | 08/14/2026 | 743.34 K | $93.89 M | 10.33% | 0.25% |
| APG ASSET MANAGEMENT US INC. | 08/12/2026 | 703.91 K | $85.81 M | 0.00% | 0.24% |
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Iron Mountain Inc. institutional Ownership - FAQ's
During the previous two years, 1565 institutional investors and hedge funds held shares of Iron Mountain Inc.. The most heavily invested institutionals were:
BlackRock, Inc.: 33.57 M
VANGUARD PORTFOLIO MANAGEMENT LLC: 25.57 M
VANGUARD CAPITAL MANAGEMENT LLC: 18.95 M
STATE STREET CORP: 17.63 M
COHEN & STEERS, INC.: 12.02 M
GEODE CAPITAL MANAGEMENT, LLC: 8.65 M
87.77% of Iron Mountain Inc. stock is owned by institutional investors.
Institutional investors have bought a total of 380.07 M shares in the last 24 months. This purchase volume represents approximately $40.72 B in transactions.