BRUKER CORP

Ticker: BRKR CUSIP: 116794108 Class: Common Stock

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

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

Q4 2014

Shares 13,828 Value ($000) $271 Avg Close $18.48 Range $16.57 - $20.21

Q3 2014

Shares 13,828 Value ($000) $256 Avg Close $20.52 Range $17.69 - $23.91

Q2 2014

Shares 13,828 Value ($000) $336 Avg Close $20.84 Range $18.95 - $23.94

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2014	13,828	$271	$18.48	$16.57 - $20.21
Q3 2014	13,828	$256	$20.52	$17.69 - $23.91
Q2 2014	13,828	$336	$20.84	$18.95 - $23.94