SpaceX going public would drop a massive mega-cap space stock into the market, which is easily the biggest aerospace, defense, or satellite name we've ever seen. The initial float (the shares actually available to trade right away) is expected to be pretty small at first, maybe just 3 to 5% of the company. Even so, that could mean tens of billions in tradable value depending on the final size. Still, it would completely dwarf the current public space sector to a ridiculous degree. Right now, the whole listed space industry including $Rocket Lab USA, Inc.(RKLB)$ , $AST SpaceMobile, Inc.(ASTS)$ , $Planet Labs Pbc(PL)$ ,