$127.08
+1.17 (+0.93%)
Market Cap
$33.5B
Shares Outstanding
297,478,817
Institutional Holders
967
Total Inst. Value
$28.5B
% of Float Held
82.3%
QoQ Holder Change
+330
Institutional data as of Q1 2025
New Positions
222
Closed Positions
132
Increased
298
Decreased
337
Institutional Ownership Trend
Top 10 Institutional Holders(Q1 2025)
| # | Fund | Value | Shares |
|---|---|---|---|
| 1 | CANADA PENSION PLAN INVESTMENT BOARD | $9.4B | 109,343 |
| 2 | VANGUARD GROUP INC | $4.0B | 46,825,734 |
| 3 | BlackRock, Inc. | $3.0B | 35,222,779 |
| 4 | STATE STREET CORP | $1.5B | 16,705,119 |
| 5 | COHEN & STEERS, INC. | $1.2B | 13,481,902 |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $715.9M | 8,283,383 |
| 7 | FMR LLC | $454.9M | 5,286,735 |
| 8 | NORTHERN TRUST CORP | $367.2M | 4,267,324 |
| 9 | DIMENSIONAL FUND ADVISORS LP | $366.2M | 4,256,417 |
| 10 | MORGAN STANLEY | $291.6M | 3,389,039 |
Biggest Buyers & Sellers This Quarter
Top Buyers
| Fund | Shares Added | Value |
|---|---|---|
| VANGUARD GROUP INC | +221K | $4.0B |
| BlackRock, Inc. | +3.1M | $3.0B |
| STATE STREET CORP | +83K | $1.5B |
| GEODE CAPITAL MANAGEMENT, LLC | +371K | $715.9M |
| FMR LLC | +4.6M | $454.9M |
Top Sellers
| Fund | Shares Removed | Value |
|---|---|---|
| Capital World Investors | -1.7M | $182.2M |
| COHEN & STEERS, INC. | -1.4M | $1.2B |
| WELLINGTON MANAGEMENT GROUP LLP | -480K | $91.8M |
| Neuberger Berman Group LLC | -476K | $3.4M |
| BANK OF AMERICA CORP /DE/ | -363K | $96.0M |
Famous Fund Managers
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Frequently Asked Questions
How many institutional investors hold IRM?
As of Q1 2025, 967 institutional investors report holding IRM (Iron Mountain Incorporated) in their 13F filings.
What percentage of Iron Mountain Incorporated is owned by institutions?
Institutional investors hold approximately 82.3% of Iron Mountain Incorporated's float as reported in SEC 13F filings.
Which hedge fund owns the most IRM?
The largest institutional holder of IRM is CANADA PENSION PLAN INVESTMENT BOARD with $9.4B in shares.
Are institutions buying or selling IRM?
This quarter, 222 institutions opened new positions in IRM and 132 closed their positions.
What is 13F institutional ownership?
SEC Form 13F is a quarterly report filed by institutional investment managers with over $100M in qualifying assets. It discloses their US equity holdings, providing transparency into what the largest investors are buying and selling.
How often is institutional ownership data updated?
13F filings are due 45 days after each calendar quarter end (May 15, Aug 14, Nov 14, Feb 14). Data is updated on HedgeTrace as new filings are processed.