SpaceX wants regular investors to help its stock launch. Here's what to know before clicking 'buy'

When SpaceX makes its debut on the US stock market, it wants smaller-pocketed, mom-and-pop investors to play a big role in what may be the biggest IPO ever.
Elon Musk's rocket company, formally known as Space Exploration Technologies Corp., is steering some of its initial public offering of stock directly to what are called "retail" investors.