MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

COOPER INVESTORS PTY LTD's Holding History (CIK: 0001561728)

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

Q4 2018

Shares 86,061 Value ($000) $5,560 Avg Close $68.31 Range $53.35 - $77.61

Q3 2018

Shares 85,332 Value ($000) $6,839 Avg Close $86.11 Range $74.38 - $97.19

Q2 2018

Shares 83,249 Value ($000) $7,967 Avg Close $102.60 Range $86.55 - $115.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	86,061	$5,560	$68.31	$53.35 - $77.61
Q3 2018	85,332	$6,839	$86.11	$74.38 - $97.19
Q2 2018	83,249	$7,967	$102.60	$86.55 - $115.42