Question 1

How many shares of KLAC does ADAGE CAPITAL PARTNERS GP, L.L.C. own?

Accepted Answer

As of 2026-Q2, ADAGE CAPITAL PARTNERS GP, L.L.C. holds 914,840 shares of KLAC (KLA CORP).

Question 2

What is ADAGE CAPITAL PARTNERS GP, L.L.C.'s KLAC position worth?

Accepted Answer

As of 2026-Q2, ADAGE CAPITAL PARTNERS GP, L.L.C.'s KLAC position is worth $276M.

Question 3

Is ADAGE CAPITAL PARTNERS GP, L.L.C. buying or selling KLAC?

Accepted Answer

In 2026-Q2, ADAGE CAPITAL PARTNERS GP, L.L.C. increased their KLAC position (+863.5% change in shares).

Question 4

When did ADAGE CAPITAL PARTNERS GP, L.L.C. first buy KLAC?

Accepted Answer

Based on available 13F filings, ADAGE CAPITAL PARTNERS GP, L.L.C. first reported a position in KLAC in 2024-Q3. They have held the position across 31 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	914,840	+863.5%	$276M	0.4%	$301.71	59
2026-Q1	Decreased	94,954	-9.4%	$139.8M	0.2%	$1,441.35	0
2025-Q4	Increased	104,854	+16.7%	$127.4M	0.2%	$1,243.65	42
2025-Q3	Decreased	89,854	-11.4%	$96.9M	0.2%	$1,062.35	0
2025-Q2	Decreased	101,454	-0.2%	$90.9M	0.2%	$886.45	0
2025-Q1	Decreased	101,654	-3.0%	$69.1M	0.1%	$669.40	0
2024-Q4	Increased	104,854	+21.0%	$66.1M	0.1%	$628.27	42
2024-Q3	Decreased	86,670	-32.9%	$67.1M	0.1%	$773.62	0