"The largest IPO in world history" will create ripple effects across global markets once SpaceX goes public, says ProcureAM's Andrew Chanin. He points to his firm's UFO ETF showing significant upside as a sign the market space boom is coming. He shares his take on what the public debut will mean for space stocks like Rocket Lab (RKLB), AST SpaceMobile (ASTS), Planet Labs (PL), and non-space industries like communications and GPS that use space tech.