Yahoo confirmed Monday it is buying social media blogging site Tumblr for $1.1 billion and promised "not to screw it up." The pledge is a direct acknowledgment of the Internet giant's spotty record as a start-up acquirer.

Two leaders in restaurant food delivery, Seamless and GrubHub, announced that they will merge on Monday. Customers from more than 500 cities will be able to order from 20,000 local restaurants through the joint company.

More poor people live in the nation's suburbs than in urban cities because of affordable housing, service-sector jobs and the increased use of housing vouchers, according to a study released Monday.

United Airlines is flying a 787 Dreamliner for the first time in four months. One of six Dreamliners operated by the world's largest airline company took off from Houston at 11:13 a.m.

NEW YORK | Mon May 20, 2013 11:45am EDT. NEW YORK (Reuters) - The yen climbed back from a 4-1/2-year low against the dollar on Monday after Japan's economy minister suggested the currency might have weakened enough.

SAC Capital Advisors LP's Steven Cohen is hunkering down as a deadline approaches for the federal government to file criminal or civil insider-trading cases against the billionaire hedge-fund manager.

After a brief price rally, the U.S. Treasury bond market slipped underwater again on Monday. Fresh selling sent the benchmark 10-year yield closer to the psychologically important 2% mark again, and some traders warn that a break of the level could ...

European investigators have asked top trading houses Glencore, Vitol and Gunvor to help with a probe into oil price manipulation, while not suggesting they are under investigation, industry sources said on Monday.

California's massive pension fund, Calpers, voted in favor of splitting the CEO and chairman roles at JPMorgan Chase JPMorgan Chase.

The airline that introduced checked-baggage fees has learned the downside of funneling more suitcases into the cabin: It takes longer for people to board.