(Updates market action)
By Anastasija Johnson
NEW YORK, Feb 7 (Reuters) - U.S. stocks rebounded in choppy trading on Thursday as takeover talk soothed worries about the global economy's health, which pushed European shares to their lowest close in two weeks.
But U.S. stocks' bounce back and a dismal $9 billion auction of 30-year U.S. government bonds punished safe-haven U.S. Treasuries, which suffered the worst sell-off in four years.
The euro dropped broadly and the British pound hit a two-week low against the dollar as investors anticipated more interest rate cuts ahead from their respective central banks.
The European Central Bank on Thursday left interest rates unchanged, but bank President Jean-Claude Trichet later signaled looser monetary policy ahead. The Bank of England cut interest rates by one quarter of a percentage point, disappointing those who expected a larger cut.
Warnings from German chip maker Infineon <IFXGn.DE> of further losses at its phone chips unit and from network equipment maker Cisco Systems Inc <CSCO.O> of disappointing third-quarter revenue growth set the negative tone for the stock market.
In the morning, U.S. shares looked set for a fourth straight day of declines, but markets rebounded as suggestions of mergers and acquisitions drew in buyers, who were looking for bargains after recent losses.
The airline industry got a boost after The Wall Street Journal reported a merger of Delta <DAL.N> and Northwest <NWA.N> could be announced as early as next week.
"The economic numbers indicate we're seeing a slower economy, but a lot of value buyers are coming in here. There have been more merger deals announced, which means you have underlying support in the market," said Anthony Conroy, head trader for BNY ConvergEx, an affiliate of the Bank of New York, in New York.
The Dow Jones industrial average <
> finished the day up 49.60 points, or 0.38 percent, at 12,247.00, according to preliminary figures. The Standard & Poor's 500 Index <.SPX> ended up 10.46 points, or 0.79 percent, at 1,336.91. The Nasdaq Composite Index < > closed up 14.28 points, or 0.63 percent, at 2,293.03.The rise in stocks helped weigh on bonds, which are seen as expensive after an almost nonstop seven-month rally. The price of the benchmark 10-year U.S. Treasury note <US10YT=RR> fell 42/32, with the yield at 3.76 percent, and the 30-year bond <US30YT=RR> dropped 3-1/32, with the yield at 4.53 percent.
Contributing to the decline was the auction of 30-year bonds, which met below-average demand. "It wasn't a very good auction, and I think it surprised the participants," said Lou Brien, a strategist with DRW Trading Group in Chicago.
GLOOM IN EUROPE
In the foreign exchange market, the euro has come under pressure in the past couple of sessions amid growing signs the economy in the 15-member bloc is faltering.
The ECB's Trichet, speaking at a post-meeting news conference, said euro zone growth risks were to the downside, paving the way for lower interest rates and sending the single currency lower.
"Trichet is basically giving us the green light to sell some more euros as he talks about downside risks to growth," said Steven Butler, director of FX trading at Scotia Capital in Toronto. "The market now thinks it's a matter of when, not if, the ECB will be cutting rates."
Reductions in interest rates reduce the yields of assets deonominated in the currencies affected, making the currency less attractive.
The euro <EUR=> fell 1.01 percent to $1.4472 while the pound slid 0.91 percent to $1.9415 <GBP=>..
European stocks also fell. The FTSEurofirst 300 index <
> of top European shares closed 1.9 percent lower. Europe's benchmark index has lost 14 percent so far in 2008, dragged lower by fears of a U.S. recession.In the precious metals market, platinum <XPT=> raced to set record highs again as supply problems in South Africa generated strong demand from investors. Platinum rose as high as $1,850.00 an ounce, gaining more than 20 percent since the start of the year. Gold <XAU=> rose to $908.80 an ounce.
U.S. light sweet crude oil <CLc1> rose 83 cents, or 0.95 percent, to $87.97 per barrel. (Additional reporting by Natsuko Waki and Sitaraman Shankar in London and John Parry, Ellis Mnyandu and Vivianne Rodrigues in New York; Editing by Jonathan Oatis)