Stan Druckenmiller, former CEO of Duquesne Capital Management, has revealed that he regrets selling a stock he bought on instinct. The stock he sold was Nvidia, the chipmaker behind the AI revolution, which he found through a tip from a young partner with deep Silicon Valley connections. Despite initially overlooking technical details, Druckemiller made a significant investment based on his trust in his partner’s judgment. He then doubled his position twice within weeks and publicly stated he would hold it for three years before selling. The six-times gain still leaves him with a gap between him and his original investment.