That start-up has seen its $47 billion valuation challenged as it heads toward an IPO. Noto, Twitter's former chief operating officer and a former managing director at Goldman Sachs, took over as CEO of SoFi in March 2018. He replaced SoFi founder Mike Cagney, who was ousted amid allegations of sexual harassment. Noto said earlier this year that going public is "not a priority" in 2019. But long-term, he said an IPO remains on the roadmap.