Tesla CEO Elon Musk has reclaimed the world's richest person title after briefly losing the spot on Wednesday to Oracle Co-founder Larry Ellison. As of Thursday morning, Ellison's total fortune stands at $383 billion, compared to Musk's $384 billion, according to Bloomberg Billionaires Index. Ellison's net worth had soared by $101-billion on Wednesday, to reach a total of $393 billion.