Security key
46284V101
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 248,525,285
- Total 13F value
- $25,494,373,784
- Share change
- +7,660,480
- Put/Call ratio
- 166%
- SEC-reported price per share
- $102.57
- Number of holders
- 1,032
- Value change
- +$803,176,666
- Number of buys
- 498
- Number of sells
- 415
- Shares outstanding
- 297,661,125
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2025
Institutions
1,032
Top holders
10
IRM full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
Previous quarter: Q1 2025
IRON MOUNTAIN INC SEC filings
IRON MOUNTAIN INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 46284V101
Recent filing periods:
Ownership snapshot
Top reported holders of IRM - IRON MOUNTAIN INC - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
VANGUARD GROUP INC
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
31 Mar 2025
13F
Lead comparable stake: 16%
Showing 1-6 of 15 holder rows.
Quick read
VANGUARD GROUP INC leads the comparable SEC ownership view at 16%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens VANGUARD GROUP INC's linked filing trail.
Comparable ownership
Top 5
VANGUARD GROUP INC
16%
BlackRock, Inc.
12%
STATE STREET CORP
5.6%
COHEN & STEERS, INC.
4.5%
GEODE CAPITAL MANAGEMENT, LLC
2.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
Company
|
16%
|
$4,028,886,153
46,825,734 shares
|
— | 31 Mar 2025 |
| BlackRock, Inc. |
13F
Company
|
12%
|
$3,030,567,858
35,222,779 shares
|
— | 31 Mar 2025 |
| STATE STREET CORP |
13F
Company
|
5.6%
|
$1,450,254,763
16,705,119 shares
|
— | 31 Mar 2025 |
| COHEN & STEERS, INC. |
13F
Company
|
4.5%
|
$1,159,907,000
13,481,902 shares
|
— | 31 Mar 2025 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
2.8%
|
$715,893,604
8,283,383 shares
|
— | 31 Mar 2025 |
| FMR LLC |
13F
Company
|
1.8%
|
$454,870,595
5,286,735 shares
|
— | 31 Mar 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q2 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
1,032
Shares
248,525,285
Rows available
1,032
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2025 vs Q1 2025 Across Filers
Q1 2025 holders
981
Q2 2025 holders
1,032
Holder diff
51
| Investor | Q1 2025 Shares | Q2 2025 Shares | Share Diff | Share Chg % | Q1 2025 value | Q2 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend