The Kraft Heinz Company (NASDAQ:KHC) traded lower on Monday after Berkshire Hathaway (BRK.A) (BRKB) recorded a substantial $3.76 billion after-tax writedown or impairment on its investment in the food company.

Berkshire Hathaway reported a $3.76 billion write-down for its shares in Kraft Heinz during its second quarter. This write-down reveals Berkshire Hathaway’s admission that its initial investment into the food conglomerate was overvalued and is now correcting course.

Berkshire has not repurchased shares since May and has now forgone buybacks for four straight quarters, even as the stock dropped over 12 percent between Buffett’s retirement announcement and last Friday’s close, as reported by Bloomberg.