Longbow downgrades Rofin-Sinar, sees IPG leading high-power fiber lasers

• Longbow Research's Joe Wittine has downgraded Rofin-Sinar (NASDAQ:RSTI -3.6%) to Neutral. He cites a distracting proxy fight  activist SilverArrow Capital has nominated three board candidates for election at Rofin's 2016 annual meeting - as well as macro uncertainty and a "competitive race" to be second in the high-power fiber laser market behind IPG Photonics (IPGP -0.8%).
• Rofin is selling of four days after rallying (along with IPG and others) after industrial laser peer reported major OLED-related laser bookings; the Nasdaq is down 1.8%. The company's FQ1 results arrive on Thursday; IPG reports on Feb. 12.