By: Natalie Korach, Chris Smith, Bess Levin, Vanessa Grigoriadis, Tom Kludt, Katie Herchenroeder, Dan Adler, Evgenia Peretz, Eric Lutz, David Canfield, Olivia Empson
The Bullish and Circle IPOs minted a bunch of new billionaires this summer. The president is raking it in too.












