Famed investor Warren Buffett isn't known as a technology guru; his reputation comes from opportunistically buying and holding longtime blue chip stocks in Berkshire Hathaway, his holding company, which is worth nearly a trillion dollars today.

However, Berkshire Hathaway's portfolio is sneakily invested very heavily, I might add, in artificial intelligence (AI). The top four AI stocks by position size represent nearly half the total portfolio!

So, feast your eyes on Buffett's top four AI stocks:

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Source Fool.com