Think ride-hailing is the future of transportation? It's now possible to put some money behind your faith. Lyft began trading publicly on the Nasdaq exchange Friday, and investors seemed receptive. Shares opened at $87.24, roughly 21% higher than the $72 the company settled on for its IPO, reports the Wall Street Journal. After that initial pop, shares settled down closer to $83, notes CNBC, which figures the company's valuation to be $25 billion. Co-founders Logan Green and John Zimmer won't become instant billionaires, notes Forbes, but they should be OK: The site estimates Green's stake to be worth $700 million and Zimmer's $510 million. Uber, meanwhile, is expected to go public later this year. (More Lyft stories.)