A banner for Uber is draped on the front of the New York Stock Exchange before the world's largest ride-hailing service holds its initial public offering, Friday, May 10, 2019. (AP Photo/Mark Lennihan)

The statue of Defiant Girl stands in front of the New York Stock Exchange before Uber, the world's largest ride-hailing service, holds its initial public offering, Friday, May 10, 2019. (AP Photo/Mark Lennihan)

The Uber banner hangs on the facade of the New York Stock Exchange, Friday, May 10, 2019. The world's largest ride-hailing service reached a major milestone Thursday when Uber priced its long-awaited initial public offering at $45 price per share to set the stage for its stock to begin trading Friday morning. (AP Photo/Richard Drew)

The statue of George Washington, on the steps of Federal Hall, overlooks the Uber banner hanging on the facade of the New York Stock Exchange, Friday, May 10, 2019. The world's largest ride-hailing service reached a major milestone Thursday when Uber priced its long-awaited initial public offering at $45 price per share to set the stage for its stock to begin trading Friday morning. (AP Photo/Richard Drew)

The Uber banner hangs on the facade of the New York Stock Exchange, Friday, May 10, 2019. The world's largest ride-hailing service reached a major milestone Thursday when Uber priced its long-awaited initial public offering at $45 price per share to set the stage for its stock to begin trading Friday morning. (AP Photo/Richard Drew)

Uber logos top trading posts on the floor of the New York Stock Exchange, Friday, May 10, 2019. The world's largest ride-hailing service reached a major milestone Thursday when Uber priced its long-awaited initial public offering at $45 price per share to set the stage for its stock to begin trading Friday morning. (AP Photo/Richard Drew)

Uber CEO Dara Khosrowshahi, right, arrives at the New York Stock Exchange for his company's initial public offering, Friday, May 10, 2019. (AP Photo/Mark Lennihan)

Uber CEO Dara Khosrowshahi arrives at the New York Stock Exchange for his company's initial public offering, Friday, May 10, 2019. (AP Photo/Mark Lennihan)

Uber CEO Dara Khosrowshahi, center, arrives at the New York Stock Exchange for his company's initial public offering, Friday, May 10, 2019. (AP Photo/Mark Lennihan)

Uber CEO Dara Khosrowshahi arrives at the New York Stock Exchange for his company's initial public offering, Friday, May 10, 2019. (AP Photo/Mark Lennihan)

Uber CEO Dara Khosrowshahi arrives at the New York Stock Exchange as his company makes its initial public offering, Friday, May 10, 2019. (AP Photo/Richard Drew)

Uber CEO Dara Khosrowshahi signs the guest book at the New York Stock Exchange as his company makes its initial public offering, Friday, May 10, 2019. (AP Photo/Richard Drew)

APTOPIX Uber CEO Dara Khosrowshahi, third from left, attends the opening bell ceremony at the New York Stock Exchange, as his company makes its initial public offering, Friday, May 10, 2019. (AP Photo/Richard Drew)

Uber CEO Dara Khosrowshahi, third from left, takes a photograph as he attends the opening bell ceremony at the New York Stock Exchange, as his company makes its initial public offering, Friday, May 10, 2019. (AP Photo/Richard Drew)

Uber CEO Dara Khosrowshahi, back to camera, hugs company employee Austin Geidt at the opening bell ceremony at the New York Stock Exchange, as his company makes its initial public offering, Friday, May 10, 2019. (AP Photo/Richard Drew)

Uber CEO Dara Khosrowshahi, right, talks with specialist Peter Giacchi before his stock begins trading at the New York Stock Exchange, as his company makes its initial public offering, Friday, May 10, 2019. (AP Photo/Richard Drew)

Uber CEO Dara Khosrowshahi, left, talks with specialist Peter Giacchi before his stock begins trading at the New York Stock Exchange, as his company makes its initial public offering, Friday, May 10, 2019. (AP Photo/Richard Drew)

Stock trader Gregory Rowe works at the New York Stock Exchange, Friday, May 10, 2019. (AP Photo/Richard Drew), APTOPIX

Stock traders gather around the post where Uber shares will begin trading during the company's initial public offering at the New York Stock Exchange, Friday, May 10, 2019. (AP Photo/Richard Drew)

Stock traders wait for the open of trading of Uber shares at the New York Stock Exchange, as the company makes its initial public offering, Friday, May 10, 2019. (AP Photo/Richard Drew)

Uber CEO Dara Khosrowshahi, left, walks with Stacy Cunningham, president of the New York Stock Exchange, prior to his company holding its initial public offering, Friday, May 10, 2019. (AP Photo/Richard Drew)

Uber CEO Dara Khosrowshahi, left, and Ryan Graves, a board member, pose for a photo before the company lists during its initial public offering at the New York Stock Exchange, Friday, May 10, 2019. (AP Photo/Richard Drew)

People buy food from an Uber Eats truck in front of the New York Stock Exchange on May 10, 2019, in New York. - Uber is set for its Wall Street debut Friday with a massive share offering that is a milestone for the ride-hailing industry, but which comes with simmering concerns about its business model. Shares will be priced at $45 for the initial public offering (IPO). Analyst Daniel Ives of Wedbush Securities said Uber has the potential to grow as it morphs its ridesharing platform into a more diverse set of services with Uber Eats, Uber Freight, and self-driving vehicle initiatives. (Photo by Don Emmert / AFP)

People buy food from an Uber Eats truck in front of the New York Stock Exchange on May 10, 2019, in New York. - Uber is set for its Wall Street debut Friday with a massive share offering that is a milestone for the ride-hailing industry, but which comes with simmering concerns about its business model. Shares will be priced at $45 for the initial public offering (IPO). Analyst Daniel Ives of Wedbush Securities said Uber has the potential to grow as it morphs its ridesharing platform into a more diverse set of services with Uber Eats, Uber Freight, and self-driving vehicle initiatives. (Photo by Don Emmert / AFP)

People buy food from an Uber Eats truck in front of the New York Stock Exchange on May 10, 2019, in New York. - Uber is set for its Wall Street debut Friday with a massive share offering that is a milestone for the ride-hailing industry, but which comes with simmering concerns about its business model. Shares will be priced at $45 for the initial public offering (IPO). Analyst Daniel Ives of Wedbush Securities said Uber has the potential to grow as it morphs its ridesharing platform into a more diverse set of services with Uber Eats, Uber Freight, and self-driving vehicle initiatives. (Photo by Don Emmert / AFP)

People buy food from an Uber Eats truck in front of the New York Stock Exchange on May 10, 2019, in New York. - Uber is set for its Wall Street debut Friday with a massive share offering that is a milestone for the ride-hailing industry, but which comes with simmering concerns about its business model. Shares will be priced at $45 for the initial public offering (IPO). Analyst Daniel Ives of Wedbush Securities said Uber has the potential to grow as it morphs its ridesharing platform into a more diverse set of services with Uber Eats, Uber Freight, and self-driving vehicle initiatives. (Photo by Don Emmert / AFP)

People buy food from an Uber Eats truck in front of the New York Stock Exchange on May 10, 2019, in New York. - Uber is set for its Wall Street debut Friday with a massive share offering that is a milestone for the ride-hailing industry, but which comes with simmering concerns about its business model. Shares will be priced at $45 for the initial public offering (IPO). Analyst Daniel Ives of Wedbush Securities said Uber has the potential to grow as it morphs its ridesharing platform into a more diverse set of services with Uber Eats, Uber Freight, and self-driving vehicle initiatives. (Photo by Don Emmert / AFP)

Two drivers hold up a protest sign as the Uber banner hangs on the front of the New York Stock Exchange May 10, 2019 in New York. - Uber is set for its Wall Street debut Friday with a massive share offering that is a milestone for the ride-hailing industry, but which comes with simmering concerns about its business model. Shares will be priced at $45 for the initial public offering (IPO). (Photo by Don Emmert / AFP)

Two drivers hold up a protest sign as the Uber banner hangs on the front of the New York Stock Exchange May 10, 2019 in New York. - Uber is set for its Wall Street debut Friday with a massive share offering that is a milestone for the ride-hailing industry, but which comes with simmering concerns about its business model. Shares will be priced at $45 for the initial public offering (IPO). (Photo by Don Emmert / AFP)

Two drivers hold up a protest sign as the Uber banner hangs on the front of the New York Stock Exchange May 10, 2019 in New York. - Uber is set for its Wall Street debut Friday with a massive share offering that is a milestone for the ride-hailing industry, but which comes with simmering concerns about its business model. Shares will be priced at $45 for the initial public offering (IPO). (Photo by Don Emmert / AFP)

FILE- In this March 11, 2019, file photo specialist Donald Himpele Jr. works at his post on the floor of the New York Stock Exchange. The U.S. stock market opens at 9:30 a.m. EDT on Friday, May 10. (AP Photo/Richard Drew, File)