Newly public companies such as Roku, NuCana and Restoration Robotics could bring a jolt to your portfolio. But remember all IPOs aren't created equally.
With the departure of CEO Dara Khosrowshahi, the online travel giant now needs to find a new chief executive.
The Dow Jones U.S. Travel & Leisure Index has been falling since Thursday's attack in Barcelona, Spain.
But, says Jim Cramer, almost every winning stock he's ever mentioned is overvalued or has been overvalued before its run.