The company said it is contemplating winding down its last-mile delivery service after stiff competition caused its revenue to plunge in the first quarterKey Takeaways:Qudian's revenue fell by more than half in the first quarter, as the company said it is considering closing its last-mile delivery business due to intense competitionThe company's outstanding share count has shrunk by about a third over the last three years, and it could use its large cash holdings to keep buying back stock and privatizeWhat ...