Mr. Soros is perhaps the highest-profile billionaire on the Democratic side. In October 2013, the Hungarian-born investor signed on as a co-chair of the national finance council for Ready for Hillary, the super-PAC that organized support for Clinton before she announced her candidacy. Soros also donated $25,000, the super-PAC’s self-imposed maximum.
Soros ranks No. 29 on the Forbes world ranking of billionaires for 2015. He is worth $24.2 billion.