Question: when do ipos start trading?
Answer: Technically, an IPO stock could even start trading in the afternoon, as long as it's well before the closing bell at 4 p.m. ET. But most recent Nasdaq IPOs have typically begun trading a few minutes before 11 a.m. ET. That's when Groupon (GRPN), Zynga (ZNGA) and Angie's List (ANGI) made their debuts.