SolarEdge Technologies stock rose 17% to hit an all-time high of $91.40 on Friday. The solar inverter maker's stock fell earlier this month.
Short-seller Citron Research noted that Generac Holdings could challenge solar microinverter makers Enphase Energy and SolarEdge's duopoly.
SolarEdge Technologies (SEDG) reported its second-quarter earnings on Tuesday. The company reported an EPS of $0.94 for the quarter ending June 30.