SpaceX IPO today: How volatile trading could impact your 401k retirement account—and why investors are worried

The broader stock market effects of the Elon Musk-led company’s huge public debut may be nearly unavoidable. SpaceX is going public, and its shares could go to the moon. That doesn’t mean that all investors are starstruck, however. That’s because for many investors, SpaceX’s IPO, and its effects on the broader market, may be nearly unavoidable.