JEFF AND MEI SZE GREENE
Net worth: $3.4 B Nationality: American Year of signing: 2011 Source of wealth: Real estate, investments
Jeff Greene is CEO and chairman of The Trade Desk, an advertising tech firm he founded in 2009. His digital ads company, which went public in 2016, specializes in social, mobile and video advertising.
"We have a lot of work to do as a country to revitalize our economy, so that the opportunities I had are available to each and every American."