A SpaceX IPO has reportedly sparked a trading frenzy, with investors showing interest in space-themed exchange-traded funds (ETFs). The development has led to a surge in activity, with some ETFs reaching significant milestones, such as a UFO ETF hitting $1 billion in assets under management. The situation has also raised concerns about investor behavior, with some outlets describing the market activity as driven by "manic impulsiveness" and a "rocket-fueled frenzy".