How does Musk's wealth compare to countries as he becomes a trillionaire again. Elon Musk has again become the world's only trillionaire as a spike in SpaceX's share value pushed its CEO's wealth above $1 trillion. According to MarketWatch, Musk can buy 11,000 of the world's most advanced F-35 fighter jets. When compared with countries' GDP, Musk's wealth puts him at the 23rd spot, behind Poland ($1.04-trillion GDP) and above Taiwan ($920-billion GDP).