Question 1

Does Price T Rowe Associates own MKSI stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Price T Rowe Associates holds 1,889,901 shares of MKSI (MKS), worth $840.6M.

Question 2

How many shares of MKSI does Price T Rowe Associates own?

Accepted Answer

As of its Q2 2026 13F, Price T Rowe Associates holds 1,889,901 shares of MKSI (MKS).

Question 3

What is Price T Rowe Associates' MKSI position worth?

Accepted Answer

As of its Q2 2026 13F, Price T Rowe Associates' MKSI position is worth $840.6M.

Question 4

Is Price T Rowe Associates buying or selling MKSI?

Accepted Answer

In Q2 2026, Price T Rowe Associates increased its MKSI position by 189,753 shares (+11.2%).

Question 5

When did Price T Rowe Associates first buy MKSI?

Accepted Answer

Price T Rowe Associates already held MKSI in its Q3 2019 13F, the earliest on record, and has listed it in 28 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	1.9M	+11.2%	$840.6M	0.1%	$444.39	35
2026-Q1	Decreased	1.7M	-38.3%	$390.7M	0.0%	$229.42	0
2025-Q4	Decreased	2.8M	-24.2%	$440.1M	0.0%	$159.38	0
2025-Q3	Decreased	3.6M	-12.0%	$449.7M	0.0%	$123.25	0
2025-Q2	Increased	4.1M	+17.5%	$410.3M	0.0%	$98.74	36
2025-Q1	Increased	3.5M	+5.2%	$281.8M	0.0%	$79.44	33
2024-Q4	Decreased	3.3M	-21.9%	$348.8M	0.0%	$103.24	0
2024-Q3	Decreased	4.3M	-37.5%	$465.1M	0.1%	$107.31	0

MKSIShowing 8 of 28 quarters

MKSI
Showing 8 of 28 quarters