Movers Roundup: VanceInfo, Mirant

Among the stock activity stories for Wednesday, Sept. 16, from AP Financial News:

NEW YORK (AP) — Shares of offshore software developer VanceInfo Technologies Inc. surged 10 percent after an analyst upgraded the company's shares and raised his estimates, citing strong demand from telecommunications companies.

NEW YORK (AP) — Shares of electric utility Mirant Corp. tumbled as an analyst downgraded the company, citing its high stock price and recent plant closure in California.

NEW YORK (AP) — Shares of Anadarko Petroleum Corp. jumped to a 52-week high after the exploration and production company said it made a deepwater discovery offshore Sierra Leone.

NEW YORK (AP) — Shares of Take-Two Interactive Software Inc. got a boost after a Piper Jaffray analyst upgraded the New York-based video game publisher citing confidence in its profitability.

NEW YORK (AP) — Shares of Digital River Inc. rose after Credit Suisse upgraded the e-commerce software provider to its highest rating, saying this quarter's results will likely be better than analysts expect and revenue growth is set to accelerate.