It's been a wild ride for investors who bought Space Exploration Technologies Corporation, aka SpaceX (NASDAQ: SPCX), stock during its June IPO. I'm delighted I didn't buy SpaceX at the IPO. Here are five reasons why buying SpaceX shares today could be a brilliant move, along with five reasons why it might be a bad idea. Also, SpaceX insider lock-up periods expire during August and September, potentially unleashing another wave of selling. Starlink is flyingSpaceX's satellite internet business generates more than $11bn a year from over 10m subscribers.