There's success in the stock market, and then there's what famed investor Warren Buffett has managed to accomplish. Through his company, Berkshire Hathway (NYSE: BRK.A)(NYSE: BRK.B), Buffett and his partners have earned their rightful reputation as investing legends.

Their detail-oriented approach to evaluating companies and choosing stocks has led to top-tier returns over the decades, and the Berkshire stock portfolio is one investors often copy. However, there is one aspect of Buffett and Berkshire Hathaway's investing strategy that the average investor shouldn't replicate: the lack of diversification.

Below is a list of Berkshire's top five stock holdings:

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Source Fool.com