The Federal Reserve on Tuesday warned that some high-flying technology firms may be overvalued, but rejected the idea of a stock market bubble.
It has no assets, no revenues and no business plan to speak of. But a company called Cynk Technology has seen its value soar as high as $4.7 billion.
BlackBerry is selling its research and development department in Germany to Volkswagen Infotainment, a subsidiary of the automaker that makes interactive technology for vehicle dashboards.
South Korea's top messaging service provider, Kakao Corp., and its second largest Internet portal, Daum, announced a merger Monday to create one of the country's largest IT companies worth around $3 billion.
If Yahoo appears back in favor, it can thank Alibaba, the Chinese Web giant in which it holds a big stake and which is set for a public stock offering.
Failed Bitcoin exchange MtGox says it has found 200,000 coins worth $116 million in an old "digital wallet", after it collapsed in February admitting it had lost half a billion dollars in a possible theft.
The stock market debut of Coupons.com brought out bargain-seekers on Friday, shooting the online discount firm up a stunning 87 percent.
Google overtook US oil giant ExxonMobil on Monday to become the world's number two company when rated by market value, behind its high-tech rival Apple.
Outspoken billionaire Carl Icahn has tossed another bushel of Apple stock into his investment portfolio as he tries to persuade the iPhone maker to buy back more of its own shares.
Apple CEO Timothy Cook received a compensation package valued at nearly $4.3 million this year, up slightly from 2012.