Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and Nasdaq Stock Market:
Morgan Stanley, down 21 cents to $15.17
The bank reached a settlement with MBIA that it says cuts risky assets, increases a key capital measure and resolves litigation.
K12 Inc., down $6.79 at $22
The New York Times published a story that was critical of the educational value of the company's online schools.
Seaspan Corp., up $1.71 at $12.16
The shipping company plans to buy back up to 10 million of its shares at a 43.5 percent premium to Tuesday's closing price.
Marathon Oil Corp., up 32 cents at $27.64
A Deutsche Bank analyst upgraded the oil company's stock, saying Marathan will benefit from oil demand outstripping supply growth.
Ivanhoe Mines Ltd., down $4.69 at $16.01
Rio Tinto may consider raising its stake in Ivanhoe, but says it doesn't currently plan a takeover bid for the copper and gold miner.
Urban Outfitters Inc., up $1.41 at $27.87
The retailer said a key revenue measure is rising as the industry heads into the critical holiday shopping period.
Endocyte Inc., down $6.72 at $3.57
The biopharmaceutical company's stock slid after it released results of a recent clinical trial of its lead drug candidate.
Cabot Microelectronics Corp., up $5.78 at $45.99
The chip equipment maker plans a special $15 dividend in early 2012, and increased the money available for stock buybacks.