Shares of Facebook Inc (NASDAQ:FB) game developer Zynga Inc (NASDAQ: ZNGA) and daily deals web site Groupon Inc (NASDAQ: GRPN) have soared following reports of activist hedge fund Jana Partners revealing small stakes in the companies.

(NYSE:ANF) and Lowe's Companies, Inc. (NYSE:LOW). Tudor Investment also sold out smaller positions in Johnson & Johnson (NYSE:JNJ), MetroPCS Communications.

Perhaps the most influential new purchase the firm made during the first quarter was Zynga Inc (NASDAQ:ZNGA), in which it bought more than 25 million shares.

Zynga Inc (NASDAQ:ZNGA) is launching its 'Running with Friends' mobile game on the iOS all over the world today. The game was released in Canada first to test the performance.

Zynga Inc (NASDAQ:ZNGA) sales have been faltering since other social gamers began flocking towards Facebook Inc. Last week, the company reported an 18 percent decline in revenues and 13 percent slide in monthly active users from the same period in ...

Zynga Inc (NASDAQ:ZNGA) has been a popular choice among option bulls for several weeks now, a development that we have continued to monitor.

Call players have been eyeing the $3 mark on Zynga Inc (NASDAQ:ZNGA) for some time now. On Wednesday, optimistic option players scooped up 2,452 weekly 5/10 3-strike calls for a volume-weighted average price (VWAP) of $0.24.

is zynga overpriced Zynga Inc (NASDAQ:ZNGA) is the developer of some of the most popular games that you see on Facebook Inc (NASDAQ:FB), like Farmville and Mafia Wars.

Game maker Zynga Inc (NASDAQ:ZNGA) has officially launched the second version of its popular game 'Draw Something' named 'Draw Something2′.

The shares of Zynga Inc (NASDAQ:ZNGA) are 6.5% higher at $3.44, on pace to end atop their 50-day moving average for the first time in more than a month.