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Warren Buffett's "mystery stock" revealed in new filing

Berkshire Hathaway has built up sizable investments in a handful of companies, according to a filing released on Thursday.

Warren Buffett has secretly invested $5 billion into a mystery stock — and the trail leads to this industrial giant

Detective work points to one stunning conclusion. Buy the stock or an industrial-sector ETF — but get ahead of Berkshire ...

Dow And S&P Open At Record Highs—As Warren Buffett Boosts UnitedHealth Rally

Buffett owned UnitedHealth shares before selling his stake in 2010, though his Berkshire Hathaway recently acquired shares.

Watch These UnitedHealth Price Levels as Stock Jumps After Buffett's Berkshire Reveals Stake

UnitedHealth shares surged Friday after Warren Buffett’s Berkshire Hathaway revealed a stake in the embattled healthcare ...

Warren Buffett Just Bought 6 Brand-New Stocks -- Here's Exactly What They Are

Also notice that although these are six brand-new positions, they add up to about $4 billion, significantly less than the ...

Now we know Warren Buffett's $1.8 billion secret

In May, a 13F filing revealed that Berkshire Hathaway was buying mystery stocks. Now, at last, we know what they are.

Nucor Stock Gets a Boost From Buffett. Berkshire’s Last Steel Buy Didn’t Go So Well.

Berkshire Bought Nucor Stock. Buffett Will Hope It Works Out Better Than His Last Steel Play. Berkshire Hathaway bought Nucor ...

Should You Buy Berkshire Hathaway Stock, Even Though It's Down 10% Since Warren Buffett Announced He's Retiring as CEO?

The biggest immediate changes will be that different people will be in control of the company's stock portfolio, and Abel ...

Warren Buffett’s Berkshire Hathaway invests nearly $800M in homebuilding giant Lennar

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

A Secret to Buffett’s Success at Berkshire: Issue Little Stock for Deals, None to Employees

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Stock Market Margin Debt Tops $1 Trillion: Is Warren Buffett's "Casino" Warning Starting to Bite?

Leveraged positions in the stock market jumped 18% in one month and topped $1 trillion for the first time. Increasing use of ...