Tom Lee says chip stocks are selling off because funds are liquidating positions to raise cash for SpaceX's $75 billion IPO, the largest in history.

Tom Lee calls the tech sell-off a "healthy" dip ahead of the SpaceX IPO, while Dougie Kass calls "B.S." on his "perma bull" market spin.

Most of the value in SpaceX's IPO is effectively a call option on the company's ambitious space data center plans.