FMR Corp., a Boston-based mutual fund holding...

FMR Corp., a Boston-based mutual fund holding company, has increased its stake in Security Pacific Corp. to 6.6%. The company, which had owned about 5% of Security Pacific for a number of years, said in a Securities and Exchange Commission filing that it now owns 7.2 million shares of the Los Angeles-based bank holding concern. The shares were acquired for about $269 million, FMR said.