The gains were broad-based, with 27 out of 30 Dow members ending higher, and more than 80% of the S&P 500 booking gains.
"[A] growing minority now believe that the Federal Reserve could start to taper at this week's meeting," said Kathleen Brooks, a research director at Forex.com, adding that only a few weeks ago, most on Wall Street were expecting the Fed to announce tapering in the early part of 2014. By that time, Janet Yellen will be leading the Fed, succeeding Ben Bernanke, whose term expires at the end of January.
The Fed has been pumping trillions into the economy since December 2008. It's been injecting $85 billion per month since September 2012 through its third round of bond purchases, a program known as quantitative easing.
In corporate news, AIG (Fortune 500) rose after the insurer reached an agreement to sell its airline leasing business to , AerCap Holdings ( for $5.4 billion. AerCap surged on the news as well. )
Shares of Sprint (Fortune 500) fell 3% despite a report from The Wall Street Journal that it was working on a deal to acquire , T-Mobile (. Shares of T-Mobile tumbled more than 4.5%. Both stocks surged in late trading Friday when the WSJ report first was published. )
Herbalife ( shares spiked after the nutritional supplements company announced that the re-audit of its financial statements from 2010 through 2012 by PriceWaterhouseCoopers was completed without any major changes. Earlier this year, )KPMG resigned as Herbalife's auditor after learning that one of its senior partners had leaked non-public information to a third party who had traded on the information.
Carl Icahn, who began investing in Herbalife a year ago shortly after rival activist investor Bill Ackman announced his big short position in the company, said he is happy about the results of the latest accounting review during a phone interview on CNBC. The billionaire investor also said he continues to think Herbalife is undervalued.
Social investing site StockTwits was abuzz with chatter about Twitter (, as shares declined 4% following two downgrades from Wall Street analysts. The slide brought out the bears on Twitter, which has been rallying for the past three weeks. )
But others defended Twitter, arguing that it's still a good long-term bet.
Another trader speculated that IBM may be on the rise as investors step into to buy it at its lows. IBM is the biggest loser in the Dow so far this year.
Shares of Boeing (Fortune 500) rose nearly 2% in extended trading after the aerospace giant announced a 50% dividend increase and $10 billion stock buyback program. Boeing, which got off to a rough start of the year due to concerns about fires with lithium-ion battery in its new 787 "Dreamliner" jets, has fully recovered from those problems and is now the best-performing Dow stock of 2013. ,
European markets closed sharply higher, with Germany's benchmark Dax index up almost 2%. Asian markets ended with losses. Japan's Nikkei slumped by 1.6% as the yen strengthened, hitting companies that depend on exports.
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