NYSE president: We can't underestimate the value of the public markets

The New York Stock Exchange was home to the larges IPO of 2019: Uber. The rideshare company raised over $8 billion when it went public. The NYSE also executed the only direct listing of the year with Slack. Stacey Cunningham, president of the New York Stock Exchange, joins "Squawk Box" at the World Economic Forum in Davos to discuss the IPO environment in 2020.