From Reuters:
Warren Buffett's Berkshire Hathaway Inc (BRKa) (BRKb) has raised its stake in Burlington Northern Santa Fe Corp (BNI) to 21.8 percent, after spending about $271 million this month on shares of the second-largest U.S. railroad.Berkshire's National Indemnity Co unit bought 4.36 million Burlington Northern shares from Jan. 15-20, paying between $61.65 and $63.43 per share, according to a filing late Tuesday with the U.S. Securities and Exchange Commission.
Berkshire now owns 74,452,029 Burlington Northern shares, valued at $4.56 billion based on Tuesday's closing price of $61.25, the filing shows....MORE