RUSH ENTERPRISES INC

Ticker: RUSHA CUSIP: 781846209 Class: Common Stock

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

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

Q2 2013

Shares 41,497 Value ($000) $1,027 Avg Close $11.00 Range $9.70 - $12.51

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2013	41,497	$1,027	$11.00	$9.70 - $12.51