As of Monday, Bloomberg reports that a rally in Tesla stock has lifted its CEO back to the top of its real-time Billionaires Index. Elon Musk was unseated from the top spot by Bernard Arnault, CEO of French luxury brand LVMH, in December of last year, making him No. 2 on the list for more than two months. Tap the link in our bio to read more. 📷: Justin Sullivan/Getty Images