Question 1

How many shares of ENTG does PRIMECAP MANAGEMENT CO/CA/ own?

Accepted Answer

As of 2026-Q2, PRIMECAP MANAGEMENT CO/CA/ holds 3.1M shares of ENTG (ENTEGRIS INC).

Question 2

What is PRIMECAP MANAGEMENT CO/CA/'s ENTG position worth?

Accepted Answer

As of 2026-Q2, PRIMECAP MANAGEMENT CO/CA/'s ENTG position is worth $562.1M.

Question 3

Is PRIMECAP MANAGEMENT CO/CA/ buying or selling ENTG?

Accepted Answer

In 2026-Q2, PRIMECAP MANAGEMENT CO/CA/ decreased their ENTG position (-0.6% change in shares).

Question 4

When did PRIMECAP MANAGEMENT CO/CA/ first buy ENTG?

Accepted Answer

Based on available 13F filings, PRIMECAP MANAGEMENT CO/CA/ first reported a position in ENTG in 2024-Q3. They have held the position across 31 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	3.1M	-0.6%	$562.1M	0.3%	$179.71	0
2026-Q1	Decreased	3.1M	-0.6%	$368.5M	0.3%	$117.06	0
2025-Q4	Decreased	3.2M	-0.0%	$266.3M	0.2%	$84.05	0
2025-Q3	Increased	3.2M	+3.1%	$292.3M	0.2%	$92.14	38
2025-Q2	Increased	3.1M	+12.0%	$247.2M	0.2%	$80.28	41
2025-Q1	Decreased	2.7M	-4.8%	$239.3M	0.2%	$86.97	0
2024-Q4	Decreased	2.9M	-2.7%	$284.6M	0.2%	$98.39	0
2024-Q3	Decreased	3M	-0.1%	$332.2M	0.2%	$111.66	0