Jeff Bezos becomes the richest person in modern history.  The Amazon CEO is valued at an estimated $105.1 billion according to Bloomberg.  Forbes, which published the net worth of the world’s richest, estimated Bezos’ fortune at $104.4 billion.

However, CNN reports that when “inflation is taken into account, neither Gates nor Bezos is the richest person of all time. Oil tycoon John D. Rockefeller is widely believed to be the richest person since the Middle Ages.  Rockefeller would have been worth $367 billion in today’s dollars, according to economist Peter Bernstein. Other 20th century business barons, including Andrew Carnegie and Henry Ford, also were wealthier than Bezos.

The majority of Bezos’ net worth comes from the 78.9 million shares of Amazon stock he owns.