It's shares are priced at $26.
Business Insider's Jay Yarow is on the floor right now. Here's what it looks like.
Jay Yarow/Business Insider
Twitter execs will ring the opening bell at 9:30 am.
REUTERS/Brendan McDermid
The Twitter logo (L) is displayed on the floor of the New York Stock Exchange a day before the company's IPO, November 6, 2013.
Jay Yarow/Business Insider
Jay Yarow/Business Insider
Jay Yarow/Business Insider
Jay Yarow/Business Insider
Here's Twitter co-founder Jack Dorsey.
Jay Yarow/Business Insider
Twitter CEO Dick Costolo.
Jay Yarow/Business Insider
Patrick Stewart, an actor best known for his role as Professor Xaxier in X-Men, ringing the opening bell
Patrick Stewart with 9-year-old Vivienne Harr and a Boston police officer.
Jay Yarow/Business Insider
Jay Yarow/Business Insider
The whole gang @dickc @jack @ev and @biz hanging out right next to @squawkstreet #post9 pic.twitter.com/smgcJQJ4z6
- Sally Shin (@sallyshin) November 7, 2013