MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

Mount Yale Investment Advisors, LLC's Holding History (CIK: 0001744349)

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

Q3 2018

Shares 1,184 Value ($000) $90 Avg Close $86.11 Range $74.38 - $97.19

Q2 2018

Shares 5,089 Value ($000) $487 Avg Close $102.60 Range $86.55 - $115.42

Q1 2018

Shares 5,100 Value ($000) $590 Avg Close $103.13 Range $88.32 - $120.60

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	1,184	$90	$86.11	$74.38 - $97.19
Q2 2018	5,089	$487	$102.60	$86.55 - $115.42
Q1 2018	5,100	$590	$103.13	$88.32 - $120.60