Even Warren Buffett is struggling with this stock market. Here's one big reason why.

View Berkshire Hathaway Inc. (BRK.B) current and estimated P/E ratio data provided by Seeking Alpha.

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Current price $745,681.84 52-week high $777,749.00 ...

G.MI Assicurazioni Generali S.p.A.

There has been a singular winner in all of this year's market tumult. Maybe what he's got will be catching.

There has been a singular winner in all of this year's market tumult. Maybe what he's got will be catching.

After hours: March 13 at 7:59:50 p.m. EDT Loading Chart for BRK-B ...

After hours: 13 March at 19:59:50 GMT-4 Loading Chart for BRK-B ...