Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and Nasdaq Stock Market:
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.
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.