Warren Buffett secret stock purchase has been kept confidential for months to avoid triggering copycat trades.

UnitedHealth shares surged Friday after Warren Buffett’s Berkshire Hathaway revealed a stake in the embattled healthcare giant. Monitor these major chart levels.

Lennar’s share price jumped on Friday after Warren Buffett’s Berkshire Hathaway invested nearly $800 million in the Miami-based homebuilder.

Berkshire Bought Nucor Stock. Buffett Will Hope It Works Out Better Than His Last Steel Play. Berkshire Hathaway bought Nucor stock. Hopefully, this purchase works out better than the last time Warren Buffett dabbled in the steel business.

Warren Buffett’s Berkshire Hathaway revealed a position in embattled healthcare giant UnitedHealth Group while showing smaller stakes in longtime holdings Apple and Bank of America, according to a regulatory filing Thursday.

Leveraged positions in the stock market jumped 18% in one month and topped $1 trillion for the first time. Increasing use of debt to invest can tell us a lot about investors' attitudes. And while this has always been the case,

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