MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

WRIGHT INVESTORS SERVICE INC's Holding History (CIK: 0000108572)

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

Q2 2021

Shares 10,794 Value ($000) $1,921 Avg Close $175.09 Range $158.98 - $192.11

Q3 2020

Shares 2,738 Value ($000) $299 Avg Close $112.47 Range $97.77 - $124.64

Q1 2018

Shares 2,485 Value ($000) $287 Avg Close $103.13 Range $88.32 - $120.60

Q4 2017

Shares 2,572 Value ($000) $243 Avg Close $93.43 Range $82.69 - $103.63

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2021	10,794	$1,921	$175.09	$158.98 - $192.11
Q3 2020	2,738	$299	$112.47	$97.77 - $124.64
Q1 2018	2,485	$287	$103.13	$88.32 - $120.60
Q4 2017	2,572	$243	$93.43	$82.69 - $103.63