— Shares of Martek Biosciences Corp. climbed Friday after the nutritional oil and dietary supplement company reported stronger fiscal third-quarter profit and revenue than Wall Street expected, and raised its outlook for 2008.
— Shares of American International Group Inc. rose Friday despite a Morgan Stanley analyst downgrading the world's largest insurer to "Equal-weight" from "Overweight," citing escalating liquidity concerns.
— Shares of mining giant Freeport-McMoRan Copper & Gold Inc. fell Friday trading as worried investors pulled money out of the weakening commodities sector