* BHP dropped bid for Rio reverberates, helps metal producers
* Bank stocks react favourably to $800 bln Fed program
* Oil steadies at $51 after falling on global recession fears
By Kevin Plumberg
HONG KONG, Nov 26 (Reuters) - Stocks in Japan and Australia fell on Wednesday after a report showed the U.S. economy shrank by the most since 2001, underscoring sharply slowing global demand, while South Korean shares were boosted by steelmakers after BHP Billiton killed its bid for Rio Tinto.
Wall Street stocks rallied after the Federal Reserve unveiled an $800 billion effort to heal the U.S. mortgage market and to aid consumer lending, with Washington racking up a staggering $8.3 trillion bill to rescue companies and keep the financial system from collapsing.
Oil prices <CLc1> were steady around $51 a barrel, after dropping nearly 7 percent on Tuesday on fears a global recession will weigh on demand, helping to support the U.S. dollar.
With the year end approaching, a relief to markets battered by the financial crisis, investors were content to make only small adjustments to their portfolios given little evidence that widespread risk taking for higher returns had made a comeback.
"The market is concerned that with recessions in parts of Asia, a recovery will take longer than in the U.S. We have just seen things really slowdown here, so I think Asian markets have more to fall," said Dariusz Kowalczyk, chief investment strategist with CFC Seymour in Hong Kong.
Kowalczyk said his top trade for 2009 will be to buy U.S. equities and sell longer-dated U.S. Treasuries, anticipating an economic recovery later in 2009 and heavy new government debt issuance to finance the myriad rescue packages and programs.
Japan's Nikkei share average <
> slipped 1.3 percent, weighed by a mix of major exporters such as Toyoto Motor Corp <7203.T> and defensive names like Takeda Pharmaceutical Co Ltd <4502.T>.Australia's benchmark S&P/ASX 200 index edged down 0.8 percent, with Rio Tinto stock <RIO.AX> plummeting 32 percent.
The global miner's chairman said the company would not need to raise equity and is confident it can sell assets to pay debt, a day after rival BHP Billiton <BHP.AX> pulled its $66 billion offer for Rio, citing adverse market conditions. [
]The MSCI index of Asia-Pacific stocks excluding Japan <.MIAPJ0000PUS> was up 1 percent, extending gains made in the past three sessions.
Hong Kong's Hang Seng index <
> was up about 2.5 percent, helped by metal producer Chalco's <2600.HK> 7.5 percent jump as the crumbled BHP and Rio deal was seen opening opportunities in other firms.M&A SHOCKWAVES
Zig-zagging share prices, frozen lending between banks and a seismic shift in Wall Street's structure has sent shockwaves through many merger and acquisition deals.
So far in the fourth quarter alone, withdrawn M&A deals total $322 billion, nearly matching the value of those completed, according to Thomson Reuters data.
The U.S. dollar inched up against the euro as market players remained sceptical that the latest U.S. measures to boost consumer lending would ease concerns about the financial crisis.
Worries over the global economic downturn and credit jitters have kept investors wary of taking risks, limiting selling of the dollar and yen, traders said.
"There have been so many steps taken by the U.S. authorities, leaving the impression they are doing anything in their capacity, but not necessarily with consistency," said Mitsuru Sahara, a senior manager at Bank of Tokyo-Mitsubishi UFJ.
"The market reaction has become increasingly cool, as it has become accustomed to new measures coming one after the other without feeling that the market has hit a bottom," he said.
The euro eased 0.4 percent to $1.3013 <EUR=>, after hitting a three-week high of $1.3081 overnight on trading platform EBS.
The euro eased 0.8 percent against the Japanese currency to 123.41 yen <EURJPY=R> as Japanese stocks fell.
The U.S. light crude future for January ticked up 43 cents to $51.20 a barrel, recovering a bit after Tuesday's steep selloff.
Still, since July when oil hit an all-time high of $147.27 a barrel, crude has been in freefall, raising concerns among oil-producing nations as recessions in major consumers saps energy demand.
OPEC ministers next gather in Cairo on Saturday, but that meeting has been called a consultative session, with its next policy-setting meeting scheduled for Dec. 17 in Algeria. (Additional reporting by Chikako Mogi in TOKYO; Editing by Dhara Ranasinghe)