Summary Box: Groupon prices IPO at $20 per share

THE IPO: Daily deal pioneer Groupon Inc. priced its initial public offering at $20 per share late Thursday, above its expected range of $16 to $18.

THE VALUE: The IPO price gives Groupon a market value of $12.7 billion. That makes it the second-largest IPO of an Internet company behind Google Inc., which went public in 2004.

TRADING TIME: Groupon, which began in Chicago in 2008, is expected to start trading Friday on the Nasdaq Stock Market under the ticker symbol “GRPN.”