Security key
46284V101
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 241,814,752
- Total 13F value
- $28,741,204,354
- Share change
- -9,408,339
- Put/Call ratio
- 58%
- SEC-reported price per share
- $118.83
- Number of holders
- 1,044
- Value change
- -$1,107,026,346
- Number of buys
- 464
- Number of sells
- 477
- 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
Q3 2024
Institutions
1,044
Top holders
10
IRM full security history
Ownership snapshot
Full 13F holder table
IRON MOUNTAIN INC SEC filings
IRON MOUNTAIN INC company facts
Broader feeds
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
30 Jun 2024
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 Finance, Inc.
9.4%
COHEN & STEERS, INC.
7.7%
STATE STREET CORP
5.9%
GEODE CAPITAL MANAGEMENT, LLC
2.7%
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%
|
$4,180,177,206
46,643,352 shares
|
— | 30 Jun 2024 |
| BlackRock Finance, Inc. |
13F
Company
|
9.4%
|
$2,499,677,475
27,891,960 shares
|
— | 30 Jun 2024 |
| COHEN & STEERS, INC. |
13F
Company
|
7.7%
|
$2,065,761,000
23,051,016 shares
|
— | 30 Jun 2024 |
| STATE STREET CORP |
13F
Company
|
5.9%
|
$1,578,535,975
17,516,178 shares
|
— | 30 Jun 2024 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
2.7%
|
$728,877,037
8,129,343 shares
|
— | 30 Jun 2024 |
| Daiwa Securities Group Inc. |
13F
Company
|
1.5%
|
$404,876,000
4,517,699 shares
|
— | 30 Jun 2024 |
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 Q3 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
1,044
Shares
241,814,752
Rows available
1,044
| 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 Q3 2024 vs Q2 2024 Across Filers
Q2 2024 holders
958
Q3 2024 holders
1,044
Holder diff
86
| Investor | Q2 2024 Shares | Q3 2024 Shares | Share Diff | Share Chg % | Q2 2024 value | Q3 2024 value | Value change | Value Chg % |
|---|