Hoping some of Twitter’s success will rub off on them, start-ups jostle to rent offices in the same San Francisco building.

The resistance to President Obama’s approach puts him at odds with his key allies and largest trading partners on fundamental issues of economic strategy.

President Obama and South Korea’s leader gave negotiators more time to work out differences over Korean imports of American autos and beef.

The daylong Seoul G-20 Business Summit led to an unusual juxtaposition of corporate and world leaders, with some businessmen expressing concern for criticism aimed at them.

Morgan Stanley and the quant team led by Peter Muller are negotiating a spinoff, the latest retreat from proprietary trading by a Wall Street firm.

Tina Brown is to become Newsweek’s editor after a long and sometimes frustrating search by Sidney Harman.

The idea of a vast free-trade zone of Pacific countries pits Japan’s farmers, who benefit from tariffs, against the country’s exporters.

New rules would oblige financial services firms to record relevant employee communications made on their work cell phones.

The European Union stands ready to offer a financial lifeline to Ireland, an official said on Thursday, as bond investors apply pressure that threatens to derail Europe’s fragile economic recovery.

A disappointing outlook from Cisco Systems rattled the market, as did a report that inflation rose in China in October at its fastest pace in more than two years.