Total Equity Funding: $176 millionCelebrity Investors: Jared Leto, Nasir "Nas" Jones, Calvin "Snoop Dogg" Broadus, Linkin Park
StockX might not be a trading app, but Robinhood sure is — via the lower costs of tech-driven brokerage, the app allows users to trade for free. In a way, this Robin Hood has definitely already taken from the rich: Jared Leto, Nas and Snoop Dogg contributed to a $13 million series A round in 2014, an amount that ballooned to $176 million by April 2017. In a 2015 series B round, Machine Shop Ventures, a VC firm owned by the band Linkin Park, joined the party. Their unlikely portfolio includes techy startups like Wavedash Games, Lyft and Hyperloop One, a strategy that makes perfect sense to co-founder Mike Shinoda, who tells CNN Money, "To be around that kind of culture with people who are super cutting-edge thinkers ... that's inspiring to me. I feel like we're more at home there."