Lyft shares surged more than 25 percent after the ride-sharing giant posted higher-than-expected revenue and vowed to slash costs in order to achieve profitability. The San Francisco-based rival to Uber reported first-quarter revenue of $955.7 million, up 23 percent year-over-year and well above analyst expectations of $884.7 million. It lost $1.31 per share, or $398.1...
