GLOBAL MARKETS-Asian shares slide as data-wary investors take profits
* Nikkei down 2.2 percent, ex-Japan Asia falls 0.4 pct
* Market worries whether economy can withstand end of Fed stimulus
* Yen off 6-month lows, Aussie dollar hits 3-month low
TOKYO, Dec 4 (Reuters) - Most Asian shares slumped on Wednesday as the prospects of a reduction in the U.S. Federal Reserve's stimulus early next year prompted investors to cash in gains from recent rallies.
MSCI's broadest index of Asia-Pacific shares outside Japan fell 0.4 percent after earlier hitting its lowest levels in almost two weeks, while Japan's Nikkei share average dropped 2.2 percent from a six-year closing high set on Tuesday.
That retreat, which came after European shares had suffered their biggest falls since August, stemmed from profit-taking ahead of Friday's U.S. job data, but also reflected worries about the Fed's exit from its asset purchase scheme.
European equities were expected to open flat to modestly higher, according to financial bookmakers.
"I think financial markets have already priced in an eventual tapering in the Fed's stimulus. The question is whether the economy can withstand it. The U.S. economy slowed after the end of QE1 and QE2. So one cannot be so sure whether it would be okay this time," said Tohru Yamamoto, chief fixed income strategist at Daiwa Securities.
QE1 and QE2 refer to the Fed's previous episodes of massive asset purchasing, or quantitative easing, the first in 2008-2010 and the second in 2010-11.
Many analysts expect the Fed to begin reducing its latest bond purchases, dubbed QE3, at its March meeting, but some think that could be brought forward to January, or at the extreme, later this month, if the employment data comes in strong.
On Wall Street, the Dow Jones industrial average fell 0.6 percent while the Standard & Poor's 500 Index declined 0.32 percent, with consumer discretionary shares leading the losses amid signs of weak holiday shopping.
While Friday's U.S. jobs report for November is seen as by far the most important, traders will be looking to the ADP employment report, new home sales figures, services activity readings from the Institute for Supply Management, all of which are scheduled for Wednesday.
Solid data on U.S. manufacturing and housing in recent weeks has boosted optimism that the U.S. economy was barely damaged by a government shutdown in October.
The spectre of tapering in the Fed's bond-buying could spook emerging market shares and currencies in particular -- given that they were among the hardest-hit when Fed Chairman Ben Bernanke floated the taper idea back in May.
"Ample liquidity from the Fed had flown to emerging markets, in a way hiding all the problems each market has. But after the Fed signalled tapering in May, investors are focusing on them," said Daisuke Uno, chief strategist at Sumitomo Mitsui Banking Corp.
In Asia, investors' concerns include persistent current account deficits in India and Indonesia, as well as the latest political instability in Thailand.
RUPIAH, BAHT RETREAT
The Indonesian rupiah weakened 0.9 percent to 11,990 rupiah per dollar after earlier falling to 12,000 to match a near five-year lows touched last week.
The Thai baht edged down 0.2 percent to 32.17 baht per dollar after protesters in Thailand trying to bring down the government rallied at national police headquarters. Their leader said the protesters' fight would go on despite efforts to defuse the crisis.
Revived talk of Fed tapering also diverted the yen's decline, which has been propelled by speculation of more carry-trades on the back of improving risk sentiment.
The dollar fell about 0.8 percent to 102.565 yen from Tuesday's six-month high of 103.38 yen.
The euro was steadier at $1.35855, not far from one-month high of $1.3622 hit last week.
The Australian dollar sank 0.8 percent to $0.9060 having earlier fallen to a three-month low of $0.9045, after Australia's July-September gross domestic product growth fell short of market expectations.
Gold and silver, which like stocks have benefited from the U.S. stimulus because of inflation fears, traded near 5-month lows.
Gold last stood at $1,221.26 per ounce near Tuesday's five-month low of $1,215.60 while silver traded at $19.11 , having slipped to $18.94 on Tuesday.
But oil prices jumped, with U.S. crude futures hitting five-week high supported by an unexpected drawdown in U.S. petroleum stocks.
Mainland Chinese shares also bucked the regional weakness, with Shanghai hitting a 12-week high on high hopes for economic reforms laid out by Beijing.