Movers Roundup: Fluor, QLogic

Among the stock activity stories for Tuesday, Aug. 11, from AP Financial News:

HARTFORD, Conn. (AP) — Shares of Fluor Corp. fell sharply, a day after the engineering and construction firm posted a steep decline in second-quarter profit.

NEW YORK (AP) — Shares of network equipment maker QLogic Corp. rose after an analyst upgraded the stock due to an uptick in demand seen by Intel Corp.'s new Nehalem product line.

NEW YORK (AP) — Brigham Exploration Co. stock jumped more than 10 percent after an analyst said the company's petroleum inventory could be significantly greater than expected because of new assessments of the company's wells in North Dakota.

NEW YORK (AP) — Shares of EchoStar Corp. surged following the company's second-quarter earnings report, after a Citi Investment Research analyst upgraded the company and sharply raised his target price.

CHARLOTTE, N.C. (AP) — Shares of MBIA Inc. plummeted, after the bond insurer was downgraded by a JPMorgan analyst citing concerns over earnings quality and potential losses.

HARTFORD, Conn. (AP) — Shares of McDermott International Inc. rose, a day after the energy infrastructure company posted a 48 percent drop in profit while beating Wall Street estimates.