Groupon shares tumble to new low after lock-up expires

Deal or not, plenty of Groupon insiders are opting to unload shares in their first opportunity since the company’s public debut, and they’re helping send Groupon’s share price tumbling to new lows Friday.

Facebook IPO

Facebook planning $100B IPO for early 2012?

Facebook is planning to file an initial public offering as early as October or November, according to a CNBC report. A filing at that time would most likely lead to an IPO in the first quarter of 2012, with a potential $100 billion valuation.

Currensee raises $4M more for social network of traders

Currensee, a social network for foreign exchange traders, today announced it has secured a third round of funding for $4 million. The new funding will be used to expand the sales team in Europe and develop more management tools as well as make investing easier.

Social media popularity can predict stock prices

A new study conducted by a doctoral student at Pace University, in association with Famecount (which tracks how popular brands are according to social media) concludes that social media popularity can reliably predict daily stock prices.