Warren Buffett is arguably the most successful investment manager in history. Since 1965, he has steered his conglomerate, Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B), to average annual returns of 19.8% per year, twice the average annual return of the benchmark S 500 index. Over the course of 58 years, that kind of outperformance gets compounded each year and has made Buffett (and every other long-term Berkshire stockholder) very rich.

Today, Berkshire Hathaway owns a portfolio of 56 publicly listed stocks and securities worth $352 billion, as well as dozens of wholly owned companies under the conglomerate's umbrella. Overall, it's valued at a whopping $803 billion.

Buffett's success can be attributed in part to his long-term approach to investing, and his focus on companies generating steady growth and consistent profits. He certainly wouldn't describe himself as a technology expert, let alone an expert on emerging technologies like artificial intelligence (AI). 

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Source Fool.com