Thursday, April 17, 2019 was an exciting day - there was a unicorn on the floor of the New York Stock Exchange.

Pinterest (PINS)  surged at the open. Pinterest opened at $23.75, 25% above its initial offer price of $19. Pinterest wasn't the only darling making its debut. Zoom Video Communications (ZM)  also surged at the open. In the end, Pinterest closed up 28.4% to $24.40, while Zoom rose 72.2% to $62 a share.

"For investors who want a clean internet play, Pinterest is kind of a happy stock",  says TheStreet's Jim Cramer.

But, he adds "we have to be careful with Pinterest." 

How to Play Pinterest on the Second Day of Trading

Before you fall into first day trading euphoria... let's not forget about the second day of trading.

That was just one of the topics in Thursday, April 18, 2019 on Cramer Live, TheStreet's daily live show on Facebook and  A special treat for the audience, Zev Fima, Action Alerts Plus Research Analyst, stepped in for host Katherine Ross.

Read. A Primer for the Pinterest Public Offering on Thursday

Watch: Investing in Cannabis