IPG PHOTONICS CORP

Ticker: IPGP CUSIP: 44980X109 Class: Common Stock

Zweig-DiMenna Associates LLC's Holding History (CIK: 0001533950)

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

Q3 2017

Shares 1,600 Value ($000) $296 Avg Close $166.10 Range $144.71 - $187.98

Q3 2015

Shares 3,100 Value ($000) $236 Avg Close $84.77 Range $71.63 - $96.50

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2017	1,600	$296	$166.10	$144.71 - $187.98
Q3 2015	3,100	$236	$84.77	$71.63 - $96.50