Movers roundup: Amazon.com, Xilinx

NEW YORK (AP) Amazon.com Inc.'s stock fell Thursday after the online retailer reported its first-quarter profit rose but investors remained concerned that the Web retailer could be hurt by the weak economy.

NEW YORK (AP) Shares of chip maker Xilinx Inc. fell Thursday after the company issued weak fiscal first-quarter guidance.

NEW YORK (AP) Shares of DryShips Inc. fell Thursday, after the company exercised options to buy two more ultra deepwater drillships, further expanding its presence outside of the drybulk sector.

NEW YORK (AP) Milpitas, Calif.-based chip maker LSI Corp. soared 20 percent Thursday on first-quarter profit well above Wall Street expectations.

NEW YORK (AP) Shares of home-appliance maker Whirlpool Corp. fell Thursday after the company said first-quarter profit dropped 20 percent amid a weak economic environment.

NEW YORK (AP) Taser shares plunged to their lowest price in more than a year Thursday after the stun-gun maker's first-quarter results fell short of analysts' expectations.