Barclays is in the early innings of an overhaul of its equities division. It recently promoted rising star Betty Gee to run prime brokerage sales in the Americas, a key business that she says has increasingly "become a driver of the industry's equities wallet." Business Insider sat down with Gee to discuss her promotion, what it takes to start a hedge fund in 2018, what's behind the string of colossal launches in the industry, what differentiates Barclays' prime business from competitors, and how technology and electronic adoption is changing the industry and making transparency all the more crucial.