Stock market network reveals investor clustering
Facebook closes WhatsApp purchase now worth $21.8B
Facebook has completed its acquisition of the mobile messaging service WhatsApp for almost $22 billion, up from the original $19 billion when the cash-and-stock deal was struck early this year thanks in part ...
Stocks drop when no one asks questions during earnings calls, study shows
Quarterly earning calls that receive zero questions or a very low number of questions during the question-and-answer session of the call lead to a significant decrease in stock price according to new research from the McCombs ...
Study finds evidence that stock prices can be predicted within a short window of time
A new study from the University of Iowa shows evidence that stock price movements are, in fact, predictable during short windows.
Google chairman to sell $2.5 bn of shares
Google's Chairman Eric Schmidt plans to sell 3.2 million "A" shares, currently worth $2.5 billion, over the next year, Google said Friday in a filing with the Securities and Exchange Commission.
Twitter takes hit as user growth disappoints (Update 2)
Twitter got a reality check Wednesday as the high-flying messaging company reported modest user growth during a quarter in which it lost $511 million.
High-frequency trading tactic lowers investor profits
High-frequency trading strategies that exploit today's fragmented equity markets reduce investor profits overall, according to new findings by University of Michigan engineering researchers. The study is believed to be the ...
Photovoltaics beat biofuels at converting sun's energy to miles driven
In 2005, President George W. Bush and American corn farmers saw corn ethanol as a promising fossil fuel substitute that would reduce both American dependence on foreign oil and greenhouse gas emissions. Accordingly, the 2005 ...
Apple's next big thing may be lower-priced iPhone (Update)
Apple's much-anticipated update to its line-up of iPhones may leave the impression that the technology pioneer's focus has shifted to making more affordable products than engineering innovative breakthroughs.
Silicon Valley isn't sharing Facebook's misery (Update)
Silicon Valley, it turns out, doesn't revolve around the stock prices of Facebook and its playful sidekick, Zynga.
Yahoo takes big leap with $1.1B deal for Tumblr (Update 3)
Yahoo's CEO is making a $1.1 billion bet on the online blogging forum Tumblr as Marissa Mayer tries to make a former Internet icon cool again.
Groupon fails to turn profit as revenue grows
Daily deals site Groupon on Wednesday issued its first earnings report as a publicly traded company, saying it failed to turn a profit despite revenue nearly tripling from a year earlier.
Facebook guards hacker mentality to stave off complacency
Facebook Inc. is on the outs with investors, and the tumbling stock price has dented employees' morale and personal net worth. But at 1 Hacker Way, there's no stopping the hacker culture - or the hackathon.
Using Twitter to predict financial markets
A University of California, Riverside professor and several other researchers have developed a model that uses data from Twitter to help predict the traded volume and value of a stock the following day.