Among the stock activity stories for Monday, May 10, from AP Financial News:
— Shares of network gear maker Cisco Systems Corp. jumped on rosy analyst expectations for the company's fiscal third-quarter earnings, due out this week.
— Shares of CPI International Inc. soared more than 20 percent after communications equipment maker Comtech Telecommunications Corp. offered to buy the antenna and high-frequency radio device maker for $272.3 million in cash and stock.
— U.S.-traded shares of Canadian drug developer Aeterna Zentaris Inc. jumped as a Rodman & Renshaw analyst reaffirmed a positive outlook for the company, citing its product pipeline.