Security key
46284V101
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 233,491,997
- Total 13F value
- $16,340,519,763
- Share change
- +3,619,805
- Put/Call ratio
- 73%
- SEC-reported price per share
- $69.98
- Number of holders
- 884
- Value change
- +$271,706,582
- Number of buys
- 367
- Number of sells
- 408
- 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
Q4 2023
Institutions
884
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
0/15
Latest evidence
30 Sep 2023
13F
Highest disclosed value: $2,771,128,939
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
VANGUARD GROUP INC has the largest disclosed position value at $2.77B.
0 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.
Disclosed position value
Top 5
VANGUARD GROUP INC
$2.77B
BlackRock Finance, Inc.
$1.32B
Capital World Investors
$1.12B
STATE STREET CORP
$792.82M
GEODE CAPITAL MANAGEMENT, LLC
$447.32M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
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
|
—
denominator unverified
|
$2,771,128,939
46,612,766 shares
|
— | 30 Sep 2023 |
| BlackRock Finance, Inc. |
13F
Company
|
—
denominator unverified
|
$1,316,131,399
22,138,459 shares
|
— | 30 Sep 2023 |
| Capital World Investors |
13F
Company
|
—
denominator unverified
|
$1,119,789,737
18,835,824 shares
|
— | 30 Sep 2023 |
| STATE STREET CORP |
13F
Company
|
—
denominator unverified
|
$792,819,808
13,193,403 shares
|
— | 30 Sep 2023 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
—
denominator unverified
|
$447,319,145
7,538,028 shares
|
— | 30 Sep 2023 |
| COHEN & STEERS, INC. |
13F
Company
|
—
denominator unverified
|
$442,310,000
7,439,677 shares
|
— | 30 Sep 2023 |
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 Q4 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
884
Shares
233,491,997
Rows available
884
| 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 Q4 2023 vs Q3 2023 Across Filers
Q3 2023 holders
826
Q4 2023 holders
884
Holder diff
58
| Investor | Q3 2023 Shares | Q4 2023 Shares | Share Diff | Share Chg % | Q3 2023 value | Q4 2023 value | Value change | Value Chg % |
|---|