BANKING

Warren Buffett Boosts Stake in Wells Fargo: The billionaire has purchased an additional 613,000 shares of Wells Fargo & Co., increasing his stake in the bank holding company to 10.75% from 9.7%, according to a filing with the Securities and Exchange Commission. In the filing, Buffett reported that his Omaha-based Berkshire Hathaway, through an insurance subsidiary, has increased its stake in the San Francisco-based banking concern. According to the filing, Berkshire’s National Indemnity Co. purchased 613,500 shares from Aug. 4 to Aug. 10 at prices ranging from $66.80 to $68.22 per share. That brings Buffett’s stake in San Francisco-based Wells Fargo to 5.6 million shares of common stock. Wells gained $1.375 to close at $69.625 on the NYSE.