Perfect World Co., Ltd. (NASDAQ:PWRD) is up 16.23% in midday trading at $10.24. PWRD is bouncing back today after the company responds to recent anonymous accusations and calls them inaccurate, defamatory and malicious. PWRD has traded 3.7 million shares so far today, well above the stock’s daily average of 819 thousand shares. The company has a market cap of 470.75 million. Sign Up For Our Free Weekly Newsletter

VASCO Data Security International Inc. (NASDAQ:VDSI) is up 13.23% today at $7.79. VDSI is seeing a jump today after being upgraded from hold to buy at Wunderlich. VDSI has traded 339 thousand shares so far today, already above its daily average of 271 thousand shares. The company has a market cap of 293.55 million.

Velti Plc (NASDAQ:VELT) is up 13.20% in midday trading at $7.12. VELT has traded double its average volume today with 1.1 million shares traded so far. The company has a market cap of 444.02 million.

RTI International Metals, Inc. (NYSE:RTI) is up 12.17% today at $26.26. RTI has traded 683 thousand shares so far today, 50% more than its daily average volume. RTI shares are up after the company acquired Remmele Engineering for $182.5 million. The company has a market cap of 799.73 million.

USA Technologies Inc. (NASDAQ:USAT) is up 8.49% today at $1.15. USAT has traded 1.1 million shares so far today, nearly four times its daily average. USAT hit an intraday high of $1.24 earlier this morning. The company has a market cap of 37.34 million.

Bank of America Corporation (NYSE:BAC) is up 4.07% in midday trading at $6.5250. BAC shares are up more than $1.50 since the middle of last month. BAC has traded 183 million shares so far today and trades 260 million shares a day on average. The company has a market cap of 66.04 billion.