UNIVERSAL DISPLAY CORP

Ticker: OLED CUSIP: 91347P105 Class: Common Stock

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

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

Q3 2018

Shares 14,965 Value ($000) $1,764 Avg Close $104.34 Range $78.45 - $123.96

Q2 2018

Shares 3,712 Value ($000) $319 Avg Close $90.46 Range $74.75 - $111.31

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	14,965	$1,764	$104.34	$78.45 - $123.96
Q2 2018	3,712	$319	$90.46	$74.75 - $111.31