New IPO SpaceX is set to begin trading this Friday. Do not overlook a more actionable trade in Elon Musk's other giant, Tesla stock.

Elon Musk firm plans the biggest stock market launch in history – but experts have flagged potential downsides

"Selling flows in recent winners and levered products from retail to invest in SpaceX could be very large."

SpaceX IPO may offer retail investors a major opportunity, but risks include volatility, debt, losses and Elon Musk’s strong voting control.