MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

B. Riley Wealth Advisors, Inc.'s Holding History (CIK: 0001464811)

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

Q2 2018

Shares 3,314 Value ($000) $320 Avg Close $102.60 Range $86.55 - $115.42

Q1 2018

Shares 3,888 Value ($000) $451 Avg Close $103.13 Range $88.32 - $120.60

Q4 2017

Shares 2,934 Value ($000) $279 Avg Close $93.43 Range $82.69 - $103.63

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2018	3,314	$320	$102.60	$86.55 - $115.42
Q1 2018	3,888	$451	$103.13	$88.32 - $120.60
Q4 2017	2,934	$279	$93.43	$82.69 - $103.63