Question 1

How many shares of IRM does Capital World Investors own?

Accepted Answer

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

Question 2

What is Capital World Investors's IRM position worth?

Accepted Answer

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

Question 3

Is Capital World Investors buying or selling IRM?

Accepted Answer

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

Question 4

When did Capital World Investors first buy IRM?

Accepted Answer

Based on available 13F filings, Capital World Investors first reported a position in IRM in 2024-Q3. They have held the position across 29 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price
2026-Q2 Latest	Decreased	1.2M	-34.8%	$153.7M	0.0%	$126.31
2026-Q1	Decreased	1.9M	-11.8%	$190.7M	0.0%	$107.78
2025-Q4	Unchanged	2.1M	0.0%	$175.6M	0.0%	$83.36
2025-Q3	Unchanged	2.1M	0.0%	$215.8M	0.0%	$99.31
2025-Q2	Unchanged	2.1M	0.0%	$217.2M	0.0%	$100.42
2025-Q1	Decreased	2.1M	-44.5%	$182.2M	0.0%	$82.89
2024-Q4	Decreased	3.8M	-7.3%	$401.2M	0.1%	$100.08
2024-Q3	Decreased	4.1M	0.0%	$489.1M	0.1%	$111.95