The United States is poised for a historic wave of initial public offerings (IPOs), with notable launches from Elon Musk's SpaceX, as well as AI giants Anthropic and OpenAI. These IPOs could inject an estimated $4 trillion into the stock market, but they also raise concerns about a potential economic crisis. Historically, large IPOs have often been precursors to market downturns, as evidenced in previous years like 2021, 2008, and the late 1990s. The Economist warns that if investor interest in these unprecedented valuations wanes, it could lead to significant market corrections. The tech sector, particularly AI, has seen soaring private investments without corresponding financial returns, which may lead to a reckoning. The ultimate impact of these IPOs remains uncertain, but analysts suggest that a downturn could be imminent if the market fails to absorb these massive valuations. The situation reflects a broader anxiety about the sustainability of the current technological spending frenzy.