How many shares of IRM does Capital World Investors own?

As of 2026-Q2, Capital World Investors holds 1.2M shares of IRM (IRON MOUNTAIN INC).

What is Capital World Investors's IRM position worth?

As of 2026-Q2, Capital World Investors's IRM position is worth $153.7M.

In 2026-Q2, Capital World Investors decreased their IRM position (-34.8% change in shares).

Based on available 13F filings, Capital World Investors first reported a position in IRM in 2019-Q2. They have held the position across 29 quarters.

Position history for Capital World Investors's holdings in IRON MOUNTAIN INC

Current Value

$153.7M

Current Shares

1.2M

Total Value Change

-$855.6M

Total Shares Change

-31M

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	1.2M	-34.8%	$153.7M	0.0%	$126.31	0
2026-Q1	Decreased	1.9M	-11.8%	$190.7M	0.0%	$107.78	0
2025-Q4	Unchanged	2.1M	0.0%	$175.6M	0.0%	$83.36	0
2025-Q3	Unchanged	2.1M	0.0%	$215.8M	0.0%	$99.31	0
2025-Q2	Unchanged	2.1M	0.0%	$217.2M	0.0%	$100.42	0
2025-Q1	Decreased	2.1M	-44.5%	$182.2M	0.0%	$82.89	0
2024-Q4	Decreased	3.8M	-7.3%	$401.2M	0.1%	$100.08	0
2024-Q3	Decreased	4.1M	0.0%	$489.1M	0.1%	$111.95	0
2024-Q2	Increased	4.1M	0.0%	$368.9M	0.1%	$85.42	31
2024-Q1	Decreased	4.1M	-0.0%	$330.2M	0.1%	$75.89	0
2023-Q4	Decreased	4.1M	-78.1%	$288.1M	0.1%	$65.67	0
2023-Q3	Decreased	18.8M	-7.5%	$1.1B	0.2%	$55.26	0
2023-Q2	Decreased	20.4M	-20.1%	$1.2B	0.2%	$51.66	0
2023-Q1	Increased	25.5M	+0.0%	$1.3B	0.3%	$47.12	38
2022-Q4	Increased	25.5M	+3.3%	$1.3B	0.3%	$44.82	39
2022-Q3	Decreased	24.7M	-14.6%	$1.1B	0.2%	$38.95	0
2022-Q2	Increased	28.9M	+0.0%	$1.4B	0.3%	$42.35	38
2022-Q1	Decreased	28.9M	-11.7%	$1.6B	0.3%	$48.13	0
2021-Q4	Increased	32.7M	+0.0%	$1.7B	0.3%	$45.03	38
2021-Q3	Decreased	32.7M	-0.0%	$1.4B	0.2%	$37.51	0
2021-Q2	Increased	32.7M	+0.1%	$1.4B	0.2%	$35.35	38
2021-Q1	Increased	32.7M	+12.2%	$1.2B	0.2%	$30.63	43
2020-Q4	Decreased	29.1M	-17.4%	$858.3M	0.2%	$23.74	0
2020-Q3	Increased	35.2M	+0.0%	$944.3M	0.2%	$21.24	38
2020-Q2	Increased	35.2M	+0.1%	$919.8M	0.2%	$19.98	38
2020-Q1	Increased	35.2M	+21.4%	$837.7M	0.2%	$18.88	46
2019-Q4	Decreased	29M	-9.9%	$924.2M	0.2%	$23.52	0
2019-Q3	Decreased	32.2M	-0.1%	$1B	0.3%	$23.44	0
2019-Q2	New	32.2M	-	$1B	0.2%	$22.39	53