** Shares in Aixtron AIXGn.DE rise 4.3% after the German chip systems manufacturer posted better-than-expected quarterly results
** Aixtron posted Q2 sales of 137.4 million euros ($157.2 million), up 4% from 131.8 million a year earlier, exceeding analysts' average forecast of 128.2 million euros in a poll by LSEG
** Jefferies says the German company's Q2 figures came in ahead of expectations, but Aixtron needs to see an improvement in silicon carbide (SiC) and gallium nitride (GaN) orders to start showing healthy growth once again
** The company confirmed its FY guidance
** The stock is among the best performers on Germany's mid-cap index .MDAXI
($1 = 0.8741 euros)
(Reporting by Ozan Ergenay)
((ozan.ergenay@thomsonreuters.com))