NEW YORK (AP) â¿¿ Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and Nasdaq Stock Market: NYSE Chevron Corp., up $2.05 at $93.54 A Raymond James analyst reiterated his "Strong Buy" rating on the oil company after it got approval for a new platform off Australia. RealD Inc., up 71 cents at $12.22 A Merriman Capital said the 3D technology company is a takeover target, or may be taken private, since its shares are so low. Ivanhoe Mines Ltd., up $2.53 at $17.08 Miner Rio Tinto PLC said it bought another 3.7 million shares of the gold and copper miner, raising its stake to 49 percent. Walgreen Co., down $2.26 at $33.77 The drugstore operator's earnings met expectations, but it said there was no progress in extending a lucrative deal with Express Scripts. Cliffs Natural Resources Inc., up 70 cents at $60.77 The Cleveland-based mining company said it is closing and selling an underperforming biomass production plant in Michigan. Las Vegas Sands Corp., up $1 at $44.69 A Deutsche Bank analyst said casinos in Macau, the only place gambling is legal in China, could see their revenues rise in October. Nasdaq Research In Motion Ltd., up 97 cents at $22.65 Shares of the BlackBerry maker rose after rumors spread that billionaire investor Carl Icahn has bought a stake in the company. Rush Enterprises Inc., up 45 cents at $15.85 Morgan Keegan upgraded the commercial vehicle dealership operator saying that it may benefit from a higher demand for heavy trucks.