SAN FRANCISCO (AP) — After falling woefully out of fashion, Yahoo wants to be cool again while catering to the capitalistic demands of its shareholders. That goal led CEO Marissa Mayer to make a $1.1 billion bet on online blogging forum Tumblr in a risky acquisition that revolves around the vision and instincts of a 26-year-old entrepreneur who dropped out of high school to pursue his dream of bringing more beauty and creativity to the Internet.

WASHINGTON (AP) — Apple Inc. employs a group of affiliate companies located outside the United States to avoid paying billions of dollars in U.S. income taxes, a Senate investigation has found.

NEW YORK (AP) — It's one thing to say tech geniuses don't need degrees. After all, Bill Gates, Steve Jobs and Mark Zuckerberg all dropped out of college.

SHANNON, Ireland (Reuters) - Raytheon Co , one of the largest U.S. weapons makers, is expected to sign an estimated $2.1 billion deal to sell Oman an air defense system while U.S. Secretary of State John Kerry visits the Gulf state this week, U.S. officials said. One official, who spoke on condition of anonymity, told reporters the company was expected to sign a letter of intent with Oman to provide a ground-based air defense system. The official said the terms were still being negotiated and the deal's value was not yet final. (Reporting by Arshad Mohammed; Editing by Eric Beech)

NEW YORK (AP) — Britain's biggest theater group has reached across the Atlantic Ocean and bought the lease to Broadway's largest theater from Live Nation Entertainment for about $60 million.

By Patrick Temple-West and Poornima Gupta WASHINGTON/SAN FRANCISCO (Reuters) - Using an unusual global tax structure, Apple Inc has kept billions of dollars in profits in Irish subsidiaries to pay little or no taxes to any government, a Senate report on the company's offshore tax structure said on Monday. ...

CHICAGO (Reuters) - United Airlines said on Monday it expects to have its entire fleet of Boeing 787 Dreamliners back in service this week, as the airline's first flight with the new jetliner in four months landed safely in Chicago. "Every new airplane has issues," United CEO Jeff Smisek said after the flight landed ahead of schedule. "We've worked with Boeing to fix them. We're very confident." Smisek and Boeing CEO Jim McNerney were on the flight from Houston on Monday. ...

(Reuters) - A federal court on Monday ruled in favor of Cubist Pharmaceuticals Inc on the interpretation of patent language in a case involving a generic challenge to its lead drug Cubicin by Hospira Inc . The ruling, in U.S. District Court in Delaware, is a positive development for Cubist in the ongoing case, which is scheduled to go to trial in February 2014, said Cubist spokeswoman Julie DiCarlo. Cubicin, an antibiotic injection used in hospitals to treat bacterial skin infections, is the company's primary revenue driver. ...

NEW YORK (AP) — Actavis is buying Warner Chilcott in an all-stock deal valued at about $8.5 billion that would create the third-biggest specialty pharmaceutical company in the U.S. market.

By Karen Freifeld and David Henry (Reuters) - JPMorgan Chase & Co , under pressure from the New York Attorney General's office, has agreed to give investors information about upcoming ballot votes, after the company that collects votes on the measures stopped giving out polling information last week. The bank's annual meeting is on Tuesday, and by far the most controversial matter up for vote is whether bank head Jamie Dimon should retain his chief executive role but be stripped of his chairman title. ...

WASHINGTON (AP) — Senate supporters of far-reaching immigration legislation accepted minor changes in public while negotiating over more sweeping alterations in private Monday as they drove toward expected Judiciary Committee approval by mid-week.

By Matthew Goldstein NEW YORK (Reuters) - The decision by prosecutors to compel Steven A. Cohen to testify before a federal grand jury about allegations of insider trading at his $15 billion hedge fund is leaving many criminal defense lawyers scratching their heads. In the past week, federal authorities have issued grand jury subpoenas seeking testimony from Cohen and others at SAC Capital, The New York Times first reported. Two people familiar with the matter confirmed to Reuters that subpoenas had been issued and Cohen was among those served. ...

NEW YORK (AP) — Small-company stocks were a bright spot in a subdued start to the week for Wall Street.

By Angela Moon NEW YORK (Reuters) - Stocks ended little changed on Monday, with indexes hovering near record levels as concerns about a correction cut earlier gains that had been prompted by news about a flurry of acquisitions. The Dow and the S&P 500 briefly hit all-time intraday highs. Early in the session, investors' sentiment was brightened by a slew of deal news, including Yahoo Inc's acquisition of Tumblr. ...

By Poornima Gupta SAN FRANCISCO (Reuters) - Apple Inc will argue for a comprehensive corporate tax reform that will levy a "reasonable tax" on foreign earnings and is not dependent on a company's revenue when it goes before a Senate panel on Tuesday to explain its offshore tax practices. In prepared testimony released by the company and submitted ahead of Apple Chief Executive Tim Cook's hearing on Tuesday before the Senate Permanent Subcommittee on Investigations, Apple denied it employed "tax gimmicks" like using Cayman Islands bank accounts or shifting intellectual property abroad. ...

NEW YORK (Reuters) - Citigroup Inc Chief Executive Michael Corbat named Jane Fraser as the new head of the bank's mortgage business on Monday ,as current CitiMortgage CEO Sanjiv Das plans to leave the bank to pursue other opportunities, according to an internal memo. Das took over Citigroup's mortgage business at the height of the financial crisis in 2008 as it was losing billions of dollars on bad subprime housing bets. He will remain at the bank for a few months to assist on mortgage issues related to the government, according to the memo. ...

By Alexei Oreskovic and Jennifer Saba SAN FRANCISCO/NEW YORK (Reuters) - Yahoo Inc will buy blogging service Tumblr for $1.1 billion cash, giving the Internet pioneer a much-needed social media platform to reach a younger generation of users and breathe new life into its ailing brand. The deal, announced on Monday, is a bold bet by Yahoo Chief Executive Marissa Mayer to revitalize the company by co-opting a Web property with strong visitor traffic but little revenue. ...

NEW YORK (AP) — Rival online takeout services Seamless North America and GrubHub on Monday announced plans to combine and create a new company covering more than 20,000 restaurants in 500 cities across the U.S.

SOCHI, Russia (AP) — The mountains of Sochi are now home to Potanin's slope, Gazprom's gondola lift and Sberbank's ski jump. The nicknames used by locals and an army of construction workers leave no doubt about who is paying for the 2014 Winter Games: Russia's business powerhouses.

OKLAHOMA CITY (AP) — Chesapeake Energy has named Anadarko Petroleum executive Robert Douglas Lawler as its new CEO.

Frank Lloyd Wright may have died in 1959, but his architecture is alive and well. A recent story in the Wall Street Journal revealed the cost to upkeep some of his historic homes may be more than buyers bargain for, but others clamor to invest in history.        

The judge presiding over the lawsuit against Martha Stewart and J.C. Penney ruled on Friday allowing the sale of Martha Stewart merchandise in J.C. Penney stores.        

An elderly couple in Brooklyn, N.Y., found a huge pile of cash–what they reckon was $100,000–in cash in a bank’s safe deposit box. Joe Valinoti, 82, and his companion, Kathleen Ricigliano, 81, said they opened a safe deposit box account with Sovereign Bank in February....        

Three men were indicted this week for shipping millions of packs of untaxed contraband Marlboro cigarettes that were part of a sting conducted by the FBI. Jia Yongming, Yazhou Wu, and Ricky Le were indicted by the U.S. Attorney’s Office on Monday in a U.S....        

Three men were indicted this week for shipping millions of packs of untaxed contraband Marlboro cigarettes that were part of a sting conducted by the FBI. Jia Yongming, Yazhou Wu, and Ricky Le were indicted by the U.S. Attorney’s Office on Monday in a U.S....        

A rare psalm book from 1640 could fetch between $15 million to $30 million at a Sotheby’s auction on Nov. 26 in New York. “It’s going to be far and away the most expensive book ever sold,” David Redden, vice chairman of Sotheby’s auction house,...        

A rare psalm book from 1640 could fetch between $15 million to $30 million at a Sotheby’s auction on Nov. 26 in New York. “It’s going to be far and away the most expensive book ever sold,” David Redden, vice chairman of Sotheby’s auction house,...        

McDonald’s has apologized for a Big Mac ad that enflamed the fast food giant in a whopper-sized controversy. The ad, a poster placed on Boston mass transit, featured a photo of a seemingly despondent woman with her head buried in her hands next to the...        

Retail sales fell by 0.4 percent in March, according to the Commerce Department, the biggest drop in nine months. The major stock market indexes slid on the news. Taxes went up at the beginning of the year for everyone who gets a paycheck and that...        

A former home of rock legend Stevie Nicks and silent-movie star Vilma Banky is on sale for $1.625 million. The 4-bedroom home in the Hollywood Hills has a guest apartment, sunset views and spans 3,538-square feet. Nicks purchased the property in the late '70s and recorded numerous demos there, according to Curbed. Banky reportedly lived there after it was built in the late '20s. The home was last purchased in December 2000 for $1.15 million.