A hot fire test of an Archimedes engine, which powers the company’s Neutron rocket. Rocket Lab This past week saw several pure-play space stocks rally, with leaders up as much as 20% or more, in part driven by what sector analysts said is a “Trump-Elon trade,” a nod to the relationship between President-elect Donald Trump and SpaceX CEO Elon Musk. “I don’t think anyone can underplay the potential catalyst that