Companies whose shares are expected to trade actively in today’s session are Groupon Inc (NASDAQ:GRPN), OmniVision Technologies, Inc. (NASDAQ:OVTI), salesforce.com, inc. (NYSE:CRM), Icahn Enterprises, L.P. (NASDAQ:IEP), McDermott International (NYSE:MDR) and Youku Tudou Inc (ADR) (NYSE:YOKU).

stocks to watch

Groupon Inc (NASDAQ:GRPN): The company posted a poor fourth quarter result on Wednesday and its shares plummeted 25 percent that day. Now the daily deals company is parting ways with CEO Andrew Mason, and it is searching for his successor. Shares soared 4.2 percent to $4.72.

OmniVision Technologies, Inc. (NASDAQ:OVTI): The chip maker’s third quarter profits surged as revenues doubled during the quarter. But OmniVision issued fourth quarter forecast that was sharply below expectations. Shares plunged 12.85 percent to $13.43 in early trading.

Salesforce.com, inc. (NYSE:CRM): The Internet business software company’s revenue growth remained the focus in the fourth quarter. However, losses widened for the period amid high stock-based compensation expenses. The company issued full-year forecast well above analysts’ expectations. Shares rose 3.42 percent to $175 in early session.

Icahn Enterprises, L.P. (NASDAQ:IEP): The company announced its plans to offer depository units that represent limited partner interests. But Icahn Enterprises didn’t specify the number of units it will put on sale. As of December 31, the Carl Icahn-led company had 104.9 million depository units. Units declined 12.70 percent to 62.41 in early session.

McDermott International (NYSE:MDR): The company posted strong revenue growth and swung to a fourth quarter profit. McDermott said its Asia-Pacific business grew at the strongest pace. But the company issued poor forecast for 2013. Shares slipped 5.66 percent to $12 in the early session.

Youku Tudou Inc (ADR) (NYSE:YOKU): The Chinese online television company said its losses narrowed in the fourth quarter as it benefited from the merger with Tudou Holdings Ltd. However, the company issued downbeat revenue guidance for the first quarter. American shares of the company slid 11.72 percent to $18 in early trading.

Another company to watch for is Cubist Pharmaceuticals Inc. (NASDAQ:CBST). The USFDA has given fast-track status to the two antibiotic molecules of the company. Shares were up 3.6 percent to $43.95.