MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

HARBOR CAPITAL ADVISORS, INC.'s Holding History (CIK: 0001039128)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 18,221 Value ($000) $3 Avg Close $148.21 Range $120.73 - $170.37

Q3 2025

Shares 23,731 Value ($000) $3 Avg Close $106.31 Range $88.17 - $132.24

Q2 2025

Shares 99,776 Value ($000) $10 Avg Close $80.86 Range $54.50 - $100.44

Q1 2025

Shares 109,755 Value ($000) $9 Avg Close $100.21 Range $75.89 - $124.28

Q4 2024

Shares 115,507 Value ($000) $12 Avg Close $106.91 Range $96.54 - $118.37

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	18,221	$3	$148.21	$120.73 - $170.37
Q3 2025	23,731	$3	$106.31	$88.17 - $132.24
Q2 2025	99,776	$10	$80.86	$54.50 - $100.44
Q1 2025	109,755	$9	$100.21	$75.89 - $124.28
Q4 2024	115,507	$12	$106.91	$96.54 - $118.37