79. CATHIE WOOD

$400 million SOURCE: Money management AGE: 65 • RESIDENCE: Wilton, CT SELF-MADE SCORE: 8

Wood founded $60 billion (assets) Ark Invest—one of Wall Street’s fastest-growing investment firms—in 2014 with the idea of packaging active investing inside exchange-traded funds. Her novel ETFs invest in genomics, robotics, artificial intelligence, fintech and technology; in mid-2019 she upped her bet on Tesla before its stock soared more than tenfold. Ark has also filed to create a Bitcoin ETF. Wood’s $23 billion flagship Ark Innovation ETF has returned an average of 46% annually over the past five years, nearly triple that of the S&P 500 Index.