Since IPOs slowed to trickle a few years ago, limited partners who invest in venture capital funds have had one giant problem: a dearth of liquidity. Lack of cash returns has been especially troublesome for wealthy individuals or their small family offices — who manage the assets of the wealthy — that made substantial investments in VC funds. Having funds locked up in venture capital was a big issue for entrepreneur Mike Hurst. After selling Exactuals (a payments startup he founded) to City Nati...