MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

JACOBS LEVY EQUITY MANAGEMENT, INC's Holding History (CIK: 0000884414)

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

Q3 2013

Shares 48,400 Value ($000) $1,287 Avg Close $23.28 Range $21.63 - $25.20

Q2 2013

Shares 63,500 Value ($000) $1,685 Avg Close $23.45 Range $21.31 - $25.25

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2013	48,400	$1,287	$23.28	$21.63 - $25.20
Q2 2013	63,500	$1,685	$23.45	$21.31 - $25.25