* Exporters hit by U.S. economy worry after dismal GDP
* Banks slip in wake of U.S. peer losses, Citi fear weighs
* Sony gains after reshuffle, ratings upgrade (Adds stocks, details)
By Elaine Lies
TOKYO, March 2 (Reuters) - Japan's Nikkei stock average slid 3.2 percent on Monday, with Mitsubishi UFJ Financial Group <8306.T> and other banks sinking on fears about their U.S. peers, while exporters fell on worry about the U.S. economy.
But Sony Corp <6758.T> bucked the trend by rising after the company said on Friday that CEO Howard Stringer would double up as president and directly oversee the company's ailing electronics division [
]Banks skidded, with the banking index <.IBNKS.T> down 3.8 percent, after the U.S. government said it would take a large stake in Citigroup Inc <C.N>'s common shares, fanning fears it will increase its role in other major banks. [
]"Wall Street basically fell on worries over what may be next after Citigroup, and this fear is hitting Tokyo as well," said Masayoshi Okamoto, chief of dealing at Jujiya Securities.
"As the U.S. economy gets worse, Japan and other Asian economies will be hit one to two times harder since manufacturers will inevitably suffer," Okamoto said.
The U.S. economy shrank at an annual rate of 6.2 percent last quarter, data released on Friday showed -- the deepest slide since 1982 and outpacing analyst forecasts for a 5.4 percent contraction. [
]Consumer spending dropped at a 4.2 percent rate, the biggest fall since the second quarter of 1980, which market players said could seriously dent exporters and Japan's export-heavy Nikkei.
The benchmark Nikkei <
> shed 242.46 points to 7,325.96. Last week it hit 7,155.16, within sight of a 26-year low just below 7,000.The broader Topix <
> lost 2.5 percent to 738.11."The macroeconomic environment remains pretty grim, but expectations for public pension fund buying on dips and hopes for government stock-buying steps are likely to limit falls," said Hiroichi Nishi, general manager at the equity division of Nikko Cordial Securities.
Japan's government last week said it was looking into ways to support the stock market, which may include setting up a stock-buying agency the way it did in the mid-1960s, but market players noted that nothing new has emerged since then, raising scepticism about what, if anything, will eventually emerge.
BANKS BATTERED
U.S. bank shares suffered after Washington said on Friday it would boost its equity stake in Citigroup to as much as 36 percent. [
] In U.S. trading, Citigroup shares slumped 39 percent and touched their lowest in more than 18 years. The S&P financial index <.GSPF> sank 8.1 percent.Embattled insurer American International Group Inc <AIG.N> approved a new rescue package on Sunday that includes another $30 billion equity commitment from the U.S. government. [
]Inevitably, Japanese banks sank in response.
Mitsubishi UFJ Financial Group, Japan's top lender, lost 5.1 percent to 431 yen and No. 3 bank Sumitomo Mitsui Financial Group <8316.T> fell 4.4 percent to 3,030 yen. Mizuho Financial Group <8411.T> dropped 4.3 percent to 180 yen.
Canon Inc <7751.T> fell 4.5 percent to 2,425 yen and Toyota Motor Corp <7203.T> lost 2.5 percent to 3,100 yen. Panasonic Corp <6752.T> shed 2.5 percent to 1,125 yen.
Though the dollar flirted with the day's lows, dipping to just under 97 yen in Tokyo trade, it was fetching 97.88 yen by midday -- a move likely to give exporters some relief. <JPY=>
Investors prefer a weaker yen because it boosts exporter profits when repatriated.
"Investors remain quite nervous about whether the recent weak yen trend will continue or not," said Jujiya's Okamoto.
Sony bucked the market's fall, rising 1.4 percent to 1,691 yen after opening down 3.5 percent.
The shake-up consolidates Stringer's control of the sprawling conglomerate and may make it easier to unite factions that analysts say have hindered its ability to develop hit products.
Nikko Citigroup raised its rating on Sony to "buy/high risk" from "hold/high risk", citing expectations for accelerated restructuring after the management shake-up, and it raised its target price for Sony shares to 2,200 yen from 2,100 yen. [
]Trade was light on the Tokyo exchange's first section, with 777 million shares changing hands, compared with last week's morning average of 967 million.
Declining shares outpaced advancing ones by more than 4 to 1. (Reporting by Elaine Lies; Editing by Chris Gallagher)