During the second quarter, Druckenmiller bought 889,355 shares of Philip Morris (NYSE: PM), in addition to call options giving him the right to buy an additional 963,000. Combined, the entire position was worth $187.7 million at the end of June.

It can pay to track the investing legends. Billionaire Stanley Druckenmiller put up 30% returns for 30 years when running his hedge fund, and he never had a down year for his investors. Clearly, he is one of the best investors out there, making it worthwhile to track what he is buying and selling.

We recently published a list of Billionaire Stanley Druckenmiller is Buying and Selling These 10 AI Stocks. Since Apple Inc. (NASDAQ:AAPL) ranks 3rd on the list, it deserves a deeper look. Stanley Druckenmiller is one of the few billionaires who have been bullish on the AI megatrends right from the start.