Stocks are looking weaker towards the close as financial stocks are weighing heavily on the market. We are still in green territory today though thanks to better than expected economic news out of China. A successful Spanish debt auction also kept the markets in the green this afternoon. With about 15 minutes left in the trading day the Dow is up 63 points, the Nasdaq is up 15 points and the S&P is up 4 points.

Here’s some of the more volatile stocks in today’s trading.

Provident Energy Ltd. (NYSE:PVX) is up 21.70% in late afternoon trading at $11.33. PVX is up on heavy volume with 23.6 million shares traded today, more than ten times its daily average. PVX shares are up today after Pembina Pipeline acquired the company in a $3.1 billion deal. The company has a market cap of 3.09 billion.

BroadVision, Inc. (NASDAQ:BVSN) is up 24.13% today at $21.81. BVSN has traded 766 thousand shares today. BroadVision announced earlier today it was selected to provide the social business platform for the Digital London summit. The company has a market cap of 96.62 million.

DARA Biosciences, Inc. (NASDAQ:DARA) is up 19.23% this afternoon at $1.55. DARA has traded 445 thousand shares today, way above its daily average of 37 thousand shares. DARA is up today after announcing acquisition of U.S. marketing rights to Soltamox, a breast cancer treatment. The company has a market cap of 8.63 million.

Columbia Laboratories, Inc. (NASDAQ:CBRX) is down 53.75% at $1.10. CBRX is trading heavy volume today with 17.3 million shares traded. The stock trades about 600 thousand shares a day on average. CRBX shares fell after their gel did not work in U.S. FDA review. The company has a market cap of 97.74 million.

Primero Mining Corp. (NYSE:PPP) is down 12.08% today at $3.1298. PPP has traded 803 thousand shares today, four times its daily average volume. PPP shares fell today after the company reporting 2011 operating results. The company has a market cap of 276.21 million.

MGIC Investment Corporation (NYSE:MTG) is down 10.11% in late day trading at $3.91. MTG has traded 12.3 million shares today, close to double its average volume. MTG followed most of the investment banking sector down today. The company has a market cap of 788.58 million.

A123 Systems, Inc. (NASDAQ:AONE) is down 7.73% today at $2.15. AONE has traded 2.4 million shares today and trades 2.5 million shares a day on average. AONE had a nice run at the end of December and into the new year when it rose from $1.60 to $2.40. The company has a market cap of 270.44 million.