Find out which stocks top investors, including Warren Buffett, are allocating significant portions of their portfolios to.

Warren Buffett is known for his incredible stock-picking abilities and for outperforming the market for not only years, but decades. But that doesn't mean he hasn't made his share of mistakes over time.

Although the great investor Warren Buffett said that it's better to "learn from the other guys' mistakes" rather than make his own, the co-founder, chairman and CEO of Berkshire Hathaway has made