Updated 9:41 a.m. ET
(CBS News) Facebook co-founder and chief executive officer Mark Zuckerberg kicked off the social network's entry into the Nasdaq Stock Market this morning by ringing the opening bell at 9:15 a.m. ET.
Zuckerberg rang the open bell from Facebook's headquarters, where the company held an all-night hackathon Thursday night. True to form, the 28-year-old CEO rang the bell wearing a hoodie with a crowd of Facebook employees cheering him on.
The screen outside the NASDAQ stock exchange at Times Square in New York displayed a handwritten message from Zuckerberg that read, "To a more open world and connected world."
Facebook priced its initial public offering (IPO) Thursday after markets closed. The social network is offering 421,233,615 shares of common stock at $38 per share. Facebook stock is available for trading under the ticker symbol "FB" at 11 a.m. ET.
Facebook reports 901 million monthly active users, 300 million photos uploaded per day and 125 billion friendships. An estimated 488 million people access Facebook via mobile products.