Berkshire also reported lower stakes in Wells Fargo & Co and cable TV company Charter Communications Inc. It also no longer reported a stake in Wabco Holdings Inc
Stocks remain Buffet's preferred choice over bonds
The loss comes six months after another multibillion-dollar Buffett pursuit hit the skids
The gap is pocket change for Berkshire, but Buffett pledged last Wednesday not to raise his offer
He added that he shouldn't keep so much money earning next to nothing for long periods