PORTSMOUTH, NH
IRON MOUNTAIN INCIRM— Latest position per institution from SEC 13F filings
15
Institutional holders
244.01M
Total shares held
21.80B
Estimated value
12.20M
Avg. position size
VANGUARD GROUP INC
CIK 102909
Shares
46.63M
Value
3.87B
Filed
Dec 31, 2025
BLACKROCK, INC.
CIK 2012383
Shares
33.02M
Value
3.37B
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
27.89M
Value
2.50B
Filed
Jun 30, 2024
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
25.02M
Value
2.56B
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
18.76M
Value
1.92B
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
17.55M
Value
1.81B
Filed
Mar 31, 2026
COHEN & STEERS, INC.
CIK 1284812
Shares
16.17M
Value
1.65M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
8.49M
Value
863.70M
Filed
Mar 31, 2026
FMR LLC
CIK 315066
Shares
7.48M
Value
764.46M
Filed
Mar 31, 2026
MORGAN STANLEY
CIK 895421
Shares
4.65M
Value
475.18M
Filed
Mar 31, 2026
PRINCIPAL FINANCIAL GROUP INC
CIK 1126328
Shares
4.57M
Value
466.38M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
4.55M
Value
464.93M
Filed
Mar 31, 2026
NORGES BANK
CIK 1374170
Shares
4.45M
Value
368.89M
Filed
Dec 31, 2025
NORTHERN TRUST CORP
CIK 73124
Shares
4.15M
Value
423.93M
Filed
Mar 31, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 884546
Shares
4.01M
Value
409.89M
Filed
Mar 31, 2026
INVESCO LTD.
CIK 914208
Shares
3.92M
Value
400.54M
Filed
Mar 31, 2026
PICTET ASSET MANAGEMENT SA
CIK 1361570
Shares
3.37M
Value
191.47M
Filed
Jun 30, 2023
LEGAL & GENERAL GROUP PLC
CIK 764068
Shares
3.14M
Value
320.22M
Filed
Mar 31, 2026
DAIWA SECURITIES GROUP INC.
CIK 1481045
Shares
3.11M
Value
317.39M
Filed
Mar 31, 2026
DEUTSCHE BANK AG\
CIK 948046
Shares
3.09M
Value
315.83M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | 102909 | 46.63M | 3.87B | Dec 31, 2025 |
| 2 | BLACKROCK, INC. | 2012383 | 33.02M | 3.37B | Mar 31, 2026 |
| 3 | BLACKROCK FINANCE, INC. | 1364742 | 27.89M | 2.50B | Jun 30, 2024 |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 25.02M | 2.56B | Mar 31, 2026 |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 18.76M | 1.92B | Mar 31, 2026 |
| 6 | STATE STREET CORP | 93751 | 17.55M | 1.81B | Mar 31, 2026 |
| 7 | COHEN & STEERS, INC. | 1284812 | 16.17M | 1.65M | Mar 31, 2026 |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 8.49M | 863.70M | Mar 31, 2026 |
| 9 | FMR LLC | 315066 | 7.48M | 764.46M | Mar 31, 2026 |
| 10 | MORGAN STANLEY | 895421 | 4.65M | 475.18M | Mar 31, 2026 |
| 11 | PRINCIPAL FINANCIAL GROUP INC | 1126328 | 4.57M | 466.38M | Mar 31, 2026 |
| 12 | DIMENSIONAL FUND ADVISORS LP | 354204 | 4.55M | 464.93M | Mar 31, 2026 |
| 13 | NORGES BANK | 1374170 | 4.45M | 368.89M | Dec 31, 2025 |
| 14 | NORTHERN TRUST CORP | 73124 | 4.15M | 423.93M | Mar 31, 2026 |
| 15 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 884546 | 4.01M | 409.89M | Mar 31, 2026 |
| 16 | INVESCO LTD. | 914208 | 3.92M | 400.54M | Mar 31, 2026 |
| 17 | PICTET ASSET MANAGEMENT SA | 1361570 | 3.37M | 191.47M | Jun 30, 2023 |
| 18 | LEGAL & GENERAL GROUP PLC | 764068 | 3.14M | 320.22M | Mar 31, 2026 |
| 19 | DAIWA SECURITIES GROUP INC. | 1481045 | 3.11M | 317.39M | Mar 31, 2026 |
| 20 | DEUTSCHE BANK AG\ | 948046 | 3.09M | 315.83M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.