Jonathan "Jon" Stein is an American fintech entrepreneur. He is the founder and chairman of Betterment, the largest independent online financial advisor in the U.S., with over $18 billion in assets under management. Stein served as chief executive officer from Betterment's founding in 2010 until December 2020, when he was succeeded by Sarah Levy. Under the umbrella of Betterment Holdings Inc., Stein manages Betterment's core retail platform, often referred to as a "robo-advisor"; a 401(k) platform called Betterment for Business, and a digital advisory platform called Betterment for Advisors.