Fitch Rating Downgrades Berkshire Hathaway (BRK-A) (BRK-B)

Rating agency Fitch Ratings announced on Wednesday that it was downgrading Berkshire Hathaway Inc. (NYSE: BRK-A) (NYSE: BRK-B) from AA+ TO AA- because of concerns about Berkshire Hathaway's takeover of Burlington Northern Santa Fe Corp. (NYSE: BNI. Fitch Ratings cut ratings on Berkshire's insurance subsidiaries from AAA to AA+ as well.

"The downgrades reflect Fitch's concerns about the BNSF acquisition's effect on BRK's asset profile, capitalization, and interest coverage," Fitch Ratings said. "The downgrades also reflect Fitch's ongoing concerns with the BRK organization's significant equity market exposure."