FRONTIER CAPITAL MANAGEMENT CO LLC

Position in MKSI — Mks Inc

CIK 351173 Boston, MA

Position in MKSI

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$53,654,000

+$16,597,138 QoQ

Shares Held

120,625

-25.2% QoQ

Ownership

0.178%

of shares outstanding

% of Portfolio

0.50%

of 13F equity value

Holder Rank

#85

of 773 holders

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 61% Shared 0% None 39%

Technology · as of Jun 30, 2026

FRONTIER CAPITAL MANAGEMENT CO LLC holds $154,795,100 across 4 Scientific & Technical Instruments names. MKSI ranks #1 (34.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MKSI	Mks Inc This page	120,625	$53,654,000
2	CGNX	Cognex Corp	669,588	$48,491,562
3	ST	Sensata Technologies Holding plc	657,792	$31,402,990
4	COHR	Coherent Corp.	53,861	$21,246,548

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$53,654,000	120,625	-25.2%	Shares	Sole	2026-08-14
2026-03-31	$37,056,862	161,250	-70.7%	Shares	Sole	2026-05-15
2025-12-31	$88,007,453	550,735	-49.0%	Shares	Sole	2026-02-17
2025-09-30	$133,766,036	1,080,763	+18.5%	Shares	Sole	2025-11-14
2025-06-30	$90,654,076	912,380	+146.4%	Shares	Sole	2025-08-14
2025-03-31	$29,678,422	370,286	+1.9%	Shares	Sole	2025-05-15
2024-12-31	$37,938,248	363,428	+1.6%	Shares	Sole	2025-02-14
2024-09-30	$38,898,829	357,822	-17.9%	Shares	Sole	2024-11-14
2024-06-30	$56,928,048	435,963	-32.6%	Shares	Sole	2024-08-14
2024-03-31	$86,034,641	646,877	+18.6%	Shares	Sole	2024-05-15
2023-12-31	$56,117,230	545,516	+20.0%	Shares	Sole	2024-02-14
2023-09-30	$39,337,622	454,560	-12.5%	Shares	Sole	2023-11-14
2023-06-30	$56,181,515	519,718	+47.0%	Shares	Sole	2023-08-14
2023-03-31	$31,337,184	353,613	-19.1%	Shares	Sole	2023-05-15
2022-12-31	$37,018,113	436,895	+110.1%	Shares	Sole	2023-02-14
2022-09-30	$17,185,649	207,958	+171.7%	Shares	Sole	2022-11-14
2022-06-30	$7,856,018	76,547	-31.4%	Shares	Sole	2022-07-20
2022-03-31	$16,741,800	111,612	+89.5%	Shares	Sole	2022-04-14
2021-09-30	$8,890,409	58,912	-11.6%	Shares	Sole	2021-10-19
2021-06-30	$11,862,858	66,664	+3.1%	Shares	Sole	2021-08-09
2021-03-31	$11,992,038	64,675	-81.2%	Shares	Sole	2021-05-13
2020-12-31	$51,632,484	343,187	-12.8%	Shares	Sole	2021-01-19
2020-09-30	$42,986,483	393,541	-3.2%	Shares	Sole	2020-11-16
2020-06-30	$46,054,821	406,701	-23.9%	Shares	Sole	2020-07-17
2020-03-31	$43,517,268	534,282	—	Shares	Sole	2020-04-16
No filing history on record for this holder in this stock.