Shares of Advanced Micro Devices Inc. AMD, +1.45% rose 0.6% in premarket trade Monday, after Stifel Nicolaus raised the price target by 24%, citing data showing that the chipmaker's Zen-based CPU line was tracking in-line to slightly better than guidance. Analyst Kevin Cassidy lifted his target to $21, which is 29% above Friday's closing price of $16.27, from $17, while reiterating his buy rating. "The surprise upside may come from the company's Epyc server CPU gaining traction ahead of consensus expectations for 5% unit market share exiting 4Q18," Cassidy wrote in a note to clients. He added that he believes AMD can garner PC and server CPU market share from Intel throughout 2019, and deliver higher revenue growth than its larger rival. AMD's stock has soared 58% year to date through Friday, while Intel shares have rallied 13% and the Dow Jones Industrial Average DJIA, +0.19% has edged up 1.2%.