Question 1

Does Primecap Management own KLAC stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Primecap Management holds 20,536,730 shares of KLAC (KLA), worth $6.2B.

Question 2

How many shares of KLAC does Primecap Management own?

Accepted Answer

As of its Q2 2026 13F, Primecap Management holds 20,536,730 shares of KLAC (KLA).

Question 3

What is Primecap Management's KLAC position worth?

Accepted Answer

As of its Q2 2026 13F, Primecap Management's KLAC position is worth $6.2B.

Question 4

Is Primecap Management buying or selling KLAC?

Accepted Answer

In Q2 2026, Primecap Management increased its KLAC position from 2,437,647 to 20,536,730 shares.

Question 5

When did Primecap Management first buy KLAC?

Accepted Answer

Primecap Management already held KLAC in its Q4 2018 13F, the earliest on record, and has listed it in 31 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	20.5M	+742.5%	$6.2B	3.7%	$301.37	94
2026-Q1	Decreased	2.4M	-15.2%	$3.6B	2.8%	$1,441.35	0
2025-Q4	Decreased	2.9M	-18.6%	$3.5B	2.6%	$1,243.65	0
2025-Q3	Decreased	3.5M	-21.1%	$3.8B	2.9%	$1,062.35	0
2025-Q2	Decreased	4.5M	-8.1%	$4B	3.2%	$88.90	0
2025-Q1	Decreased	4.9M	-5.9%	$3.3B	2.7%	$67.31	0
2024-Q4	Decreased	5.2M	-2.2%	$3.3B	2.5%	$62.25	0
2024-Q3	Decreased	5.3M	-3.9%	$4.1B	3.0%	$76.29	0