Warren Buffett loses $1 billion in 2 days after Kraft Heinz disappoints again

Warren Buffett took a $1 billion loss as Kraft Heinz stock plunged 11% in two days.
Berkshire Hathaway's 27% stake in the food giant shrank in value to $8.7 billion from $9.8 billion over Thursday and Friday.
Kraft Heinz on Thursday reported sharp declines in fourth-quarter sales and profits.
Fitch cut the credit rating on Kraft Heinz bonds to "junk" on Friday.
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Warren Buffett lost more than $1 billion this week as Kraft Heinz stock plummeted 11