Fitch has downgraded Berkshire Hathaway's insurance subsidiaries, as the Warren Buffett-backed conglomerate completed its $16bn mega-acquisition of railway operator Burlington Northern Santa Fe (BNSF).
Fitch has downgraded Berkshire Hathaway's insurance subsidiaries, as the Warren Buffett-backed conglomerate completed its $16bn mega-acquisition of railway operator Burlington Northern Santa Fe (BNSF).