By Jeremy Gaunt, European Investment Correspondent
LONDON, May 13 (Reuters) - European stocks fell and Wall Street looked set for some losses on Wednesday with investors fretting about banks and the global economy.
The U.S. dollar rebounded from an earlier four-month low. Sterling fell after the Bank of England said the UK economy will recover more slowly than previously thought.
World stocks as measured by MSCI <MIWD00000PUS> lost 0.4 percent for a third consecutive day of weakness.
Investors have been buoyed recently by signs that global economic decline may at the least be troughing. But some are seeking more proof.
"Expectations are up slightly, and people are looking for signs that there's some real improvement, not just levelling at the bottom," said Rick Meckler, president of investment firm LibertyView Capital Management in New Jersey.
"The definition of 'better than expected' has been changing from not being horrible to actually showing some real improvement," he said.
The pan-European FTSEurofirst <.FTEU3) was down 1.6 percent, dragged lower by banking and mining stocks.
Japan's Nikkei <
>, however, earlier gained 0.45 percent.Analysts said that despite profit-taking this week, market sentiment has improved.
In one indication of this, the CBOE Volatility Index <.VIX>, the implied volatility measure of the S&P 500 index <.SPX>, posted its lowest level since late September.
DOLLAR REBOUNDS
The dollar rebounded from a four-month low, rallying against sterling after the Bank of England said UK inflation would be anaemic and that growth has as much chance of being positive over the next 12 months as it has of being negative.
The U.S. currency had earlier fallen to fresh lows after an article in the Financial Times flagged the risk of the United States losing its top sovereign credit rating.
But the BoE report and subsequent comments from Governor Mervyn King triggered a rebound.
Sterling <GBP=D4> was down 0.8 percent on the day at $1.5148, nearly two cents from levels just before the BoE report was published.
The dollar index <.DXY>, which measures its performance against a basket of six currencies, was up 0.2 percent on the day at 82.51, having earlier hit a four-month low of 81.871.
On euro zone government bonds markets, yields were lower. The 10-year Bund yielded 3.372 percent <EU10YT=RR>, while the 2-year Schatz yield was at 1.317 percent <EU2YT=RR>. (Additional reporting by Edward Krudy, editing by Mike Peacock and Andy Bruce)
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