- Type / Class
- Equity / Common Stock
- Shares outstanding
- 295,766,873
- Total 13F shares
- 248,525,285
- Share change
- +7,660,480
- Total reported value
- $25,494,373,784
- Put/Call ratio
- 166%
- Price per share
- $102.57
- Number of holders
- 1,032
- Value change
- +$803,176,666
- Number of buys
- 498
- Number of sells
- 415
Quarterly Holders Quick Answers
What is CUSIP 46284V101?
CUSIP 46284V101 identifies IRM - IRON MOUNTAIN INC - Common Stock in SEC institutional holdings data.
Need full ownership history?
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Jump to adjacent filing periods for faster comparison and easier crawl discovery.
Recent filing periods for CUSIP 46284V101:
Top shareholders of IRM - IRON MOUNTAIN INC - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
|
Company |
16%
|
46,825,734
|
$4,028,886,153 | — | 31 Mar 2025 | |
| BlackRock, Inc. |
13F
|
Company |
12%
|
35,222,779
|
$3,030,567,858 | — | 31 Mar 2025 | |
| STATE STREET CORP |
13F
|
Company |
5.6%
|
16,705,119
|
$1,450,254,763 | — | 31 Mar 2025 | |
| COHEN & STEERS, INC. |
13F
|
Company |
4.6%
|
13,481,902
|
$1,159,907,000 | — | 31 Mar 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.8%
|
8,283,383
|
$715,893,604 | — | 31 Mar 2025 | |
| FMR LLC |
13F
|
Company |
1.8%
|
5,286,735
|
$454,870,595 | — | 31 Mar 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1.4%
|
4,267,324
|
$367,160,557 | — | 31 Mar 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
1.4%
|
4,256,417
|
$366,210,002 | — | 31 Mar 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
1.2%
|
3,487,479
|
$300,062,693 | — | 31 Mar 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.1%
|
3,389,039
|
$291,593,152 | — | 31 Mar 2025 | |
| Legal & General Group Plc |
13F
|
Company |
1.1%
|
3,183,998
|
$273,951,191 | — | 31 Mar 2025 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
1.1%
|
3,144,827
|
$270,580,914 | — | 31 Mar 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.96%
|
2,848,954
|
$245,124,006 | — | 31 Mar 2025 | |
| Daiwa Securities Group Inc. |
13F
|
Company |
0.93%
|
2,752,467
|
$236,822,000 | — | 31 Mar 2025 | |
| Pictet Asset Management Holding SA |
13F
|
Company |
0.84%
|
2,476,597
|
$213,032,833 | — | 31 Mar 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.76%
|
2,234,200
|
$192,230,568 | — | 31 Mar 2025 | |
| Capital World Investors |
13F
|
Company |
0.72%
|
2,117,169
|
$182,161,221 | — | 31 Mar 2025 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
0.7%
|
2,075,282
|
$178,557,256 | — | 31 Mar 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.7%
|
2,061,560
|
$177,376,716 | — | 31 Mar 2025 | |
| CENTERSQUARE INVESTMENT MANAGEMENT LLC |
13F
|
Company |
0.68%
|
2,008,437
|
$172,805,919 | — | 31 Mar 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.67%
|
1,974,922
|
$169,922,309 | — | 31 Mar 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.63%
|
1,861,318
|
$160,147,796 | — | 31 Mar 2025 | |
| Russell Investments Group, Ltd. |
13F
|
Company |
0.6%
|
1,771,114
|
$152,319,473 | — | 31 Mar 2025 | |
| PGGM Investments |
13F
|
Individual |
0.54%
|
1,597,968
|
$137,489,000 | — | 31 Mar 2025 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
0.53%
|
1,554,684
|
$132,387,910 | — | 31 Mar 2025 | |
| Contour Asset Management LLC |
13F
|
Company |
0.48%
|
1,427,250
|
$122,800,590 | — | 31 Mar 2025 | |
| Kent P. Dauten |
3/4/5
|
Director |
0.41%
|
1,207,681
|
$117,603,975 | — | 29 May 2025 | |
| PRUDENTIAL FINANCIAL INC |
13F
|
Company |
0.45%
|
1,344,479
|
$115,678,974 | — | 31 Mar 2025 | |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO |
13F
|
Company |
0.45%
|
1,331,161
|
$114,533,092 | — | 31 Mar 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.42%
|
1,251,792
|
$107,704,184 | — | 31 Mar 2025 | |
| UBS Group AG |
13F
|
Company |
0.39%
|
1,145,286
|
$98,540,407 | — | 31 Mar 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.38%
|
1,115,592
|
$95,985,553 | — | 31 Mar 2025 | |
| Deutsche Girozentrale DekaBank |
13F
|
Individual |
0.38%
|
1,126,012
|
$95,072,000 | — | 31 Mar 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
0.36%
|
1,067,364
|
$91,835,999 | — | 31 Mar 2025 | |
| Amundi |
13F
|
Individual |
0.37%
|
1,099,934
|
$91,404,518 | — | 31 Mar 2025 | |
| Sumitomo Mitsui Trust Group, Inc. |
13F
|
Company |
0.35%
|
1,047,116
|
$90,093,861 | — | 31 Mar 2025 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
0.31%
|
904,184
|
$77,795,988 | — | 31 Mar 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.3%
|
897,982
|
$77,262,371 | — | 31 Mar 2025 | |
| SEI INVESTMENTS CO |
13F
|
Company |
0.28%
|
829,835
|
$71,398,839 | — | 31 Mar 2025 | |
| Swiss National Bank |
13F
|
Company |
0.28%
|
827,561
|
$71,203,348 | — | 31 Mar 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
0.28%
|
824,103
|
$70,906,000 | — | 31 Mar 2025 | |
| HSBC HOLDINGS PLC |
13F
|
Company |
0.28%
|
819,862
|
$70,477,946 | — | 31 Mar 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
0.28%
|
817,446
|
$70,333,054 | — | 31 Mar 2025 | |
| CAPTRUST FINANCIAL ADVISORS |
13F
|
Company |
0.27%
|
803,623
|
$69,143,702 | — | 31 Mar 2025 | |
| CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC |
13F
|
Company |
0.26%
|
772,190
|
$66,439,228 | — | 31 Mar 2025 | |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.25%
|
740,591
|
$63,720,450 | — | 31 Mar 2025 | |
| Mitsubishi UFJ Asset Management Co., Ltd. |
13F
|
Company |
0.24%
|
717,248
|
$61,712,018 | — | 31 Mar 2025 | |
| Epoch Investment Partners, Inc. |
13F
|
Company |
0.24%
|
714,025
|
$61,434,711 | — | 31 Mar 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.24%
|
695,894
|
$59,874,720 | — | 31 Mar 2025 | |
| WELCH & FORBES LLC |
13F
|
Company |
0.23%
|
674,042
|
$57,994,522 | — | 31 Mar 2025 |
Institutional Holders of IRON MOUNTAIN INC - Common Stock (IRM) as of Q2 2025
As of 30 Jun 2025,
IRON MOUNTAIN INC - Common Stock (IRM) was held by
1,032 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
248,525,285 shares.
The largest 10 holders included
VANGUARD GROUP INC, BlackRock, Inc., STATE STREET CORP, COHEN & STEERS, INC., GEODE CAPITAL MANAGEMENT, LLC, FMR LLC, DIMENSIONAL FUND ADVISORS LP, Invesco Ltd., NORGES BANK, and NORTHERN TRUST CORP.
This page lists
1,037
institutional shareholders reporting positions in this security
for the Q2 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
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 Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.