Larry Ellison briefly dethroned Elon Musk as world's richest person, ending his 300-day reign, as his net worth rose $101 billion on Oracle's stock surge. Born in 1944, Ellison attended Illinois and Chicago universities before starting his career in California. He co-founded Oracle in 1977 with $2,000 investment and stepped down as its CEO in 2014 after a 37-year stint.