CNN BUSINESS | Warren Buffett is buying big again

London (CNN Business) – For years, billionaire investor Warren Buffett has been sitting on a mountain of cash. But with stocks at record highs, he struggled to find deals that caught his eye.

Now, with many other investors in selling mode, he’s going shopping.

What’s happening: Buffett’s Berkshire Hathaway just disclosed that it bought almost 121 million shares of HP worth about $4.2 billion, giving Buffett a stake of more than 11% in the technology company.  –read more–