Buffet to buy BNSF Railway NEW YORK (AP) — Warren Buffet's Berkshire Hathaway says it has agreed to buy BNSF Railway in a deal valuing the railroad at $34 billion.

Berkshire Hathaway Inc. already owns a stake of about 22 percent in BNSF, and says it will pay $100 a share for the rest of the company. That is a 32 percent premium over Burlington's closing price on Monday.

The deal announced Tuesday has been approved by the boards of both companies.

It would be the biggest acquisition ever for Berkshire Hathaway Inc.