Bank stocks rose with the rest of the market after investor Warren  Buffett said in his 1997 annual report the stock market was not overvalued   because of the favorable interest rate environment and the prospect for   strong corporate earnings.     
For the past two years, Mr. Buffett, chairman of the financial vehicle  Berkshire Hathaway in Omaha, has said U.S. stock prices were too high. 
  
Mr. Buffett said Berkshire sold more than 600,000 shares in Wells Fargo  & Co., trimming its position to 7.8%. He also said it had reduced its stake   in Freddie Mac by 250,000 shares, to 8.6%.   
Mr. Buffett praised Wells for its share repurchase strategy, however.
  
"The repurchases that Coca-Cola, The Washington Post, and Wells Fargo  made in past years at very low prices benefited far more than today's   repurchases made at loftier prices," wrote Mr. Buffett.   
Wells Fargo's shares rose $6.125, to $$325.625. Freddie Mac stock fell  18.75 cents, to $49. 
Mr. Buffett also spoke bullishly about American Express Co., in which he  has a stake, and Salomon Brothers, which was recently bought by Travelers   Corp.   
  
At his annual meeting last year Mr. Buffett, who is also known as the  Oracle of Omaha, had gone so far as to assert that the shares of Berkshire   Hathaway were overvalued.   
However, in his 1997 annual report, which was released on the Internet  over the weekend, Mr. Buffett made a 180-degree turn. 
"There is no reason to think of stocks as generally overvalued," said  the second-richest man in America. "On the other hand, returns on equity   are not a sure thing to remain at or even near their present levels."   
The Standard & Poor's bank index climbed 2.23% and the Dow Jones  industrial average 1.35%. The Nasdaq bank index rose 0.62% and the S&P 500   1%.   
  
Among the biggest gainers were BankBoston Corp., up $2.0625, to $62.75;  Bankers Trust New York, up $3.8125, to $121.75; and Chase Manhattan Corp.,   up $3.0625, to $125.3125.   
Elsewhere in the market, J.P. Morgan shares also surged on a report in  the Apple Daily, a Hong Kong newspaper, that said the company is in talks   with HSBC Holdings PLC. Shares were also buoyed by comments from UBS   Securities bank analyst Thomas Hanley. He said J.P. Morgan would be bought   out in 12 months and raised his target price to $175.       
J.P Morgan's shares jumped $5.0625, to $130.0625, on twice average  volume.