Amazon CEO Jeff Bezos briefly became the third-richest person in the world on Friday, surpassing billionaire investor Warren Buffett for the first time. By noon on Friday, Bezos’ net worth had reached $65 billion, which put him $300 million ahead of Buffett, Forbes reports. But when markets closed on Friday, his net worth had fallen to $64.6 billion, which returned the upper hand to Buffett by $400 million.