Robert Langer

Net worth:$1.6 billion

Citizenship: U.S.

Source of wealth: Biotechnology

Langer is a founding investor in Massachusettsbased biotech firm, Moderna, owning 3% of the company. He joined the three-comma-club in November 2020, becoming the third billionaire that Moderna minted last year. Between November and early December, his fortune rose from roughly $1.1 billion to $2 billion, before declining to $1.7 billion following a drop in Moderna’s stocks by 17% on December 18. The Massachusetts Institute of Technology professor is known as the “Edison of Medicine” for his work in biomedical engineering. He also owns smaller shares in publicly-traded biotech startups: SQZ

Biotechnologies and Frequency Therapeutics.