Question 1

Does Frontier Capital Management own MKSI stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Frontier Capital Management holds 120,625 shares of MKSI (MKS), worth $53.7M.

Question 2

How many shares of MKSI does Frontier Capital Management own?

Accepted Answer

As of its Q2 2026 13F, Frontier Capital Management holds 120,625 shares of MKSI (MKS).

Question 3

What is Frontier Capital Management's MKSI position worth?

Accepted Answer

As of its Q2 2026 13F, Frontier Capital Management's MKSI position is worth $53.7M.

Question 4

Is Frontier Capital Management buying or selling MKSI?

Accepted Answer

In Q2 2026, Frontier Capital Management reduced its MKSI position by 40,625 shares (-25.2%).

Question 5

When did Frontier Capital Management first buy MKSI?

Accepted Answer

Frontier Capital Management already held MKSI in its Q1 2019 13F, the earliest on record, and has listed it in 30 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	120,625	-25.2%	$53.7M	0.5%	$444.39	0
2026-Q1	Decreased	161,250	-70.7%	$37.1M	0.4%	$229.42	0
2025-Q4	Decreased	550,735	-49.0%	$88M	0.9%	$159.38	0
2025-Q3	Increased	1.1M	+18.5%	$133.8M	1.2%	$123.25	56
2025-Q2	Increased	912,380	+146.4%	$90.7M	0.8%	$98.74	68
2025-Q1	Increased	370,286	+1.9%	$29.7M	0.3%	$79.44	35
2024-Q4	Increased	363,428	+1.6%	$37.9M	0.4%	$103.24	35
2024-Q3	Decreased	357,822	-17.9%	$38.9M	0.4%	$107.31	0
2024-Q2	Decreased	435,963	-32.6%	$56.9M	0.6%	$128.67	0
2024-Q1	Increased	646,877	+18.6%	$86M	0.8%	$130.83	49
2023-Q4	Increased	545,516	+20.0%	$56.1M	0.6%	$101.01	49
2023-Q3	Decreased	454,560	-12.5%	$39.3M	0.4%	$84.73	0
2023-Q2	Increased	519,718	+47.0%	$56.2M	0.5%	$105.60	57
2023-Q1	Decreased	353,613	-19.1%	$31.3M	0.3%	$86.36	0
2022-Q4	Increased	436,895	+110.1%	$37M	0.4%	$82.38	56
2022-Q3	Increased	207,958	+171.7%	$17.2M	0.2%	$80.13	54
2022-Q2	Decreased	76,547	-31.4%	$7.9M	0.1%	$99.33	0
2022-Q1	Decreased	111,612	-46.2%	$16.7M	0.2%	$144.91	0
2021-Q4	Increased	207,427	+252.1%	$36.1M	0.3%	$168.01	56
2021-Q3	Decreased	58,912	-11.6%	$8.9M	0.1%	$145.37	0
2021-Q2	Increased	66,664	+3.1%	$11.9M	0.1%	$171.16	29
2021-Q1	Decreased	64,675	-81.2%	$12M	0.1%	$178.13	0
2020-Q4	Decreased	343,187	-12.8%	$51.6M	0.4%	$144.36	0
2020-Q3	Decreased	393,541	-3.2%	$43M	0.4%	$104.65	0
2020-Q2	Decreased	406,701	-23.9%	$46.1M	0.4%	$108.31	0
2020-Q1	Decreased	534,282	-8.9%	$43.5M	0.5%	$77.75	0
2019-Q4	Increased	586,743	+8.5%	$64.5M	0.5%	$104.84	38
2019-Q3	Increased	540,760	+67.3%	$49.9M	0.4%	$87.77	52
2019-Q2	Increased	323,196	+348.4%	$25.2M	0.2%	$73.89	55
2019-Q1	First report	72,079	-	$6.7M	0.0%	$88.04	0

MKSI30 quarters

MKSI
30 quarters