What does CUSIP 46284V101 represent in this 13F holders report?

CUSIP 46284V101 is the security identifier for IRM - IRON MOUNTAIN INC - Common Stock used to aggregate holder disclosures.

How many institutions held IRM - IRON MOUNTAIN INC - Common Stock in Q4 2022?

773 institutional investors reported IRM - IRON MOUNTAIN INC - Common Stock for Q4 2022. Use the holders table for investor-level position and value details.

IRON MOUNTAIN INC - Common Stock (IRM)

CUSIP: 46284V101

Q4 2022 13F Holders as of 31 Dec 2022

Type / Class: Equity / Common Stock
Shares outstanding: 297,582,354
Total 13F shares: 227,868,373
Share change: +775,454
Total reported value: $11,377,567,891
Put/Call ratio: 59%
Price per share: $49.85
Number of holders: 773
Value change: +$44,555,254
Number of buys: 360
Number of sells: 279

Quarterly Holders Quick Answers

What is CUSIP 46284V101?
CUSIP 46284V101 identifies IRM - IRON MOUNTAIN INC - Common Stock in SEC institutional holdings data.

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q1 2023
Previous quarter: Q3 2022

Recent filing periods for CUSIP 46284V101:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

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%	47,446,869	$2,086,239,000	—	30 Sep 2022	13F
Capital World Investors	13F	Company	8.3%	24,680,046	$1,085,182,000	—	30 Sep 2022	13F
BlackRock Finance, Inc.	13F	Company	7.6%	22,739,307	$999,848,000	—	30 Sep 2022	13F
STATE STREET CORP	13F	Company	4.9%	14,500,564	$646,473,000	—	30 Sep 2022	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	2.3%	6,771,504	$297,449,000	—	30 Sep 2022	13F
MORGAN STANLEY	13F	Company	1.8%	5,370,717	$236,151,000	—	30 Sep 2022	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.4%	4,049,027	$178,036,000	—	30 Sep 2022	13F
PICTET ASSET MANAGEMENT SA	13F	Company	1.4%	4,030,490	$177,221,000	—	30 Sep 2022	13F
DEUTSCHE BANK AG\	13F	Company	1.4%	4,019,486	$176,738,000	—	30 Sep 2022	13F
Invesco Ltd.	13F	Company	1.3%	3,954,490	$173,879,000	—	30 Sep 2022	13F
FMR LLC	13F	Company	1.3%	3,772,388	$165,872,000	—	30 Sep 2022	13F
Amundi	13F	Individual	1.2%	3,612,230	$161,642,000	—	30 Sep 2022	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	1.2%	3,607,721	$158,632,000	—	30 Sep 2022	13F
NORTHERN TRUST CORP	13F	Company	1.1%	3,195,274	$140,496,000	—	30 Sep 2022	13F
Bank of New York Mellon Corp	13F	Company	1%	2,998,806	$131,857,000	—	30 Sep 2022	13F
Epoch Investment Partners, Inc.	13F	Company	0.89%	2,660,210	$116,969,000	—	30 Sep 2022	13F
Legal & General Group Plc	13F	Company	0.72%	2,149,057	$94,494,000	—	30 Sep 2022	13F
NORGES BANK	13F	Company	0.61%	1,812,334	$79,688,326	—	30 Sep 2022	13F
Sumitomo Mitsui Trust Group, Inc.	13F	Company	0.58%	1,714,203	$75,374,000	—	30 Sep 2022	13F
JPMORGAN CHASE & CO	13F	Company	0.55%	1,643,749	$72,277,000	—	30 Sep 2022	13F
Neuberger Berman Group LLC	13F	Company	0.46%	1,367,319	$60,202,000	—	30 Sep 2022	13F
INTECH INVESTMENT MANAGEMENT LLC	13F	Company	0.44%	1,299,806	$57,152,468	—	30 Sep 2022	13F
Swiss National Bank	13F	Company	0.42%	1,259,147	$55,365,000	—	30 Sep 2022	13F
CIBC Private Wealth Group LLC	13F	Company	0.41%	1,231,064	$54,131,000	—	30 Sep 2022	13F
LSV ASSET MANAGEMENT	13F	Company	0.41%	1,224,123	$53,825,000	—	30 Sep 2022	13F
Rockefeller Capital Management L.P.	13F	Company	0.36%	1,081,591	$47,557,000	—	30 Sep 2022	13F
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	13F	Company	0.33%	990,156	$43,537,158	—	30 Sep 2022	13F
Pacer Advisors, Inc.	13F	Company	0.33%	988,134	$43,448,000	—	30 Sep 2022	13F
Nuveen Asset Management, LLC	13F	Company	0.33%	967,832	$42,555,000	—	30 Sep 2022	13F
ROYAL BANK OF CANADA	13F	Company	0.32%	959,196	$42,175,000	—	30 Sep 2022	13F
AGF INVESTMENTS INC.	13F	Company	0.3%	902,471	$39,682,000	—	30 Sep 2022	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.3%	879,938	$38,691,000	—	30 Sep 2022	13F
Deutsche Girozentrale DekaBank	13F	Individual	0.3%	880,609	$38,373,000	—	30 Sep 2022	13F
CANADA PENSION PLAN INVESTMENT BOARD	13F	Company	0.29%	867,590	$38,148,000	—	30 Sep 2022	13F
Russell Investments Group, Ltd.	13F	Company	0.28%	835,796	$36,722,000	—	30 Sep 2022	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.28%	834,401	$36,690,000	—	30 Sep 2022	13F
J.P. Morgan Private Wealth Advisors LLC	13F	Company	0.26%	772,637	$33,973,000	—	30 Sep 2022	13F
Border to Coast Pensions Partnership Ltd	13F	Company	0.25%	746,040	$32,803,000	—	30 Sep 2022	13F
WELCH & FORBES LLC	13F	Company	0.25%	738,058	$32,453,000	—	30 Sep 2022	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.24%	699,724	$30,766,000	—	30 Sep 2022	13F
COHEN & STEERS, INC.	13F	Company	0.23%	693,660	$30,500,000	—	30 Sep 2022	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.22%	667,636	$29,356,000	—	30 Sep 2022	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	0.22%	662,716	$29,139,000	—	30 Sep 2022	13F
Asset Management One Co., Ltd.	13F	Company	0.21%	627,265	$27,580,000	—	30 Sep 2022	13F
AMERICAN CENTURY COMPANIES INC	13F	Company	0.2%	606,854	$26,683,000	—	30 Sep 2022	13F
BARCLAYS PLC	13F	Company	0.2%	587,785	$25,843,000	—	30 Sep 2022	13F
BANK OF MONTREAL /CAN/	13F	Company	0.16%	466,431	$25,790,000	—	30 Sep 2022	13F
RHUMBLINE ADVISERS	13F	Company	0.2%	580,917	$25,543,000	—	30 Sep 2022	13F
UBS Group AG	13F	Company	0.19%	567,812	$24,967,000	—	30 Sep 2022	13F
ENVESTNET ASSET MANAGEMENT INC	13F	Company	0.19%	566,191	$24,895,000	—	30 Sep 2022	13F

Institutional Holders of IRON MOUNTAIN INC - Common Stock (IRM) as of Q4 2022

As of 31 Dec 2022, IRON MOUNTAIN INC - Common Stock (IRM) was held by 773 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 227,868,373 shares. The largest 10 holders included VANGUARD GROUP INC, Capital World Investors, BlackRock Inc., STATE STREET CORP, GEODE CAPITAL MANAGEMENT, LLC, MORGAN STANLEY, Invesco Ltd., DEUTSCHE BANK AG\, DIMENSIONAL FUND ADVISORS LP, and CHARLES SCHWAB INVESTMENT MANAGEMENT INC. This page lists 774 institutional shareholders reporting positions in this security for the Q4 2022 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q4 2022 vs Q3 2022 Across Filers

Q3 2022 holders

731

Q4 2022 holders

773

Holder diff

Investor	Q3 2022 Shares	Q4 2022 Shares	Share Diff	Share Chg %	Q3 2022 Value $	Q4 2022 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.