ACADIAN ASSET MANAGEMENT LLC

Position in IRM — Iron Mountain Inc

CIK 916542 Boston, MA

Position in IRM

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$17,252,160

+$17,009,283 QoQ

Shares Held

168,907

+5668.7% QoQ

Ownership

0.057%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2020

23 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Real Estate · as of Mar 31, 2026

ACADIAN ASSET MANAGEMENT LLC holds $222,859,724 across 11 REIT - Specialty names. IRM ranks #4 (7.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AMT	American Tower Corp /Ma/	735,606	$126,950,883
2	EQIX	Equinix Inc	39,825	$39,038,058
3	SBAC	Sba Communications Corp	128,526	$22,120,609
4	IRM	Iron Mountain Inc This page	168,907	$17,252,160
5	LAMR	Lamar Advertising Co/New	85,156	$10,785,858
6	OUT	OUTFRONT Media Inc.	78,677	$2,084,940
7	FPI	Farmland Partners Inc.	152,464	$1,712,170
8	GLPI	Gaming & Leisure Properties, Inc.	31,702	$1,406,617

23 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$17,252,160	168,907	+5668.7%	Shares	Defined	2026-05-13
2025-12-31	$242,877	2,928	-95.3%	Shares	Defined	2026-02-10
2025-09-30	$6,362,687	62,416	+3006.8%	Shares	Defined	2025-11-13
2025-06-30	$206,063	2,009	-90.9%	Shares	Defined	2025-08-07
2024-12-31	$2,315,257	22,027	-96.1%	Shares	Defined	2025-02-11
2024-09-30	$66,620,851	560,640	+565.6%	Shares	Defined	2024-11-12
2024-06-30	$7,548,244	84,225	-21.5%	Shares	Defined	2024-08-06
2024-03-31	$8,601,319	107,235	-18.1%	Shares	Defined	2024-05-10
2023-12-31	$9,167,240	130,998	+118.2%	Shares	Defined	2024-02-13
2023-09-30	$3,568,783	60,030	+14.2%	Shares	Defined	2023-11-13
2023-06-30	$2,987,879	52,585	+486.4%	Shares	Defined	2023-08-07
2023-03-31	$474,443	8,967	0.0%	Shares	Defined	2023-05-11
2022-12-31	$447,004	8,967	-78.0%	Shares	Defined	2023-02-14
2022-09-30	$1,795,207	40,828	+846.4%	Shares	Defined	2022-11-14
2022-06-30	$210,048	4,314	+72.4%	Shares	Defined	2022-08-09
2022-03-31	$138,691	2,503	+15.1%	Shares	Defined	2022-05-12
2021-12-31	$113,817	2,175	-96.6%	Shares	Defined	2022-02-10
2021-09-30	$2,772,587	63,811	+92.4%	Shares	Defined	2021-11-12
2021-06-30	$1,403,754	33,170	+4749.4%	Shares	Defined	2021-08-11
2021-03-31	$25,314	684	-96.8%	Shares	Defined	2021-05-11
2020-12-31	$625,064	21,203	+23.3%	Shares	Defined	2021-02-11
2020-09-30	$460,841	17,202	+27.4%	Shares	Defined	2020-11-09
2020-06-30	$352,350	13,500	—	Shares	Defined	2020-08-12
No filing history on record for this holder in this stock.