* Bank concerns boost dollar as investors seek safety
* Dollar index hits three-year high; euro down vs dlr
* U.S. set for $30 bln AIG bailout, HSBC in rights issue
* EU rejects mass east Europe bailout; euro zone PMI weak (Updates prices, adds comment)
By Steven C. Johnson
NEW YORK, March 2 (Reuters) - The dollar soared to a three-year high on Monday after a record loss for insurer AIG added to worries that the financial crisis is growing more severe and enhanced the U.S. currency's safe-haven appeal.
Wall Street sustained heavy losses, extending a global stock market rout as the Dow opened below 7,000 for the first time since 1997, while the dollar hit its highest level against a basket of six major currencies since early 2006 <.DXY>.
European Union leaders' rejection of a mass bailout for Eastern Europe pushed the euro below $1.26, as did a survey showing euro zone manufacturers had their worst month in 12 years. For details, see [
] and [ ].But the biggest blow came from American International Group <AIG.N>, which announced a $61.7 billion fourth-quarter loss, the largest quarterly loss in U.S. corporate history. Earlier, Treasury threw a new $30 billion lifeline to the company. [
] and [ ].Analysts said the news reaffirmed suspicion that more turmoil lies ahead, spurring investors to sell stocks for safer, dollar-denominated alternatives such as Treasuries.
"With all the negative news lately -- today from the U.S. insurance sector and the European summit -- the market is just not prepared to take on a lot of risk," said Dustin Reid, senior currency strategist at RBS Global Banking & Markets in Chicago. "So you're seeing people pile into the dollar."
In New York, the euro was down 0.7 percent at $1.2578 <EUR=>, after hitting a session low of $1.2547, according to Reuters data. The dollar fell 0.3 percent to 97.19 yen <JPY=>.
The euro was hit hard after EU leaders rejected calls, led by Hungary, for a 180-billion-euro aid package to rescue Eastern European countries suffering through a deep recession. The EU agreed only to help countries on a case-by-case basis.
"It keeps alive the story that sovereign risk in Europe is marching higher as there's still no coordinated package" to address the problem, said Richard Franulovich, senior currency strategist at Westpac Banking Corp in New York.
If not for heavy selling of the British pound against the euro, he said, the common currency would be vulnerable to a push toward the $1.2330-$1.2350 area last seen in late October.
Sterling tumbled to $1.3959, its lowest level since late January, before edging back to $1.3988 <GBP=>, still 2.2 percent weaker on the day.
'ROLL CALL OF REASONS' TO AVOID RISK
HSBC's <HSBC.L> 12.5 billion pound ($17.7 billion) rights issue, launched at a deep discount after annual profit more than halved and bad debts soared in the United States, also weighed on risk appetite and pushed European stocks lower. [
]."There's a roll call of reasons to stay risk averse -- the news from AIG, HSBC and worries about Eastern Europe and that is benefiting the dollar," said Geoffrey Yu, a currency strategist at UBS in London.
Outside the U.S. dollar, only the yen was seeing a bid among major currencies on Monday as it attracted moderate safe-haven buying as equity markets turned lower. The euro fell 1.1 percent to 122.24 yen <EURJPY=>.
"The global slump in equity prices appears to be offering a lingering lifeline to the Japanese yen, (though) quite why we're unsure," said Andrew Wilkinson, senior market analyst at Interactive Brokers Group in Greenwich, Connecticut.
The yen used to be seen as a safe-haven alternative but has lost some of its luster as data showed Japan's economy shrank in the fourth quarter as exports fell sharply. (Additional reporting by Tamawa Desai in London and Gertrude Chavez-Dreyfuss and Nick Olivari in New York; Editing by Editing by Jonathan Oatis)