After weeks of steady gains in chip stocks and record highs, Wall Street is experiencing violent index moves that signal choppy markets are back. The Nasdaq composite has averaged 2.1% swings over the past five sessions, doubling its five-year average of 1%, with Friday's 4% drop marking the steepest decline since April's tariff turmoil.

Thursday brought a dramatic reversal when President Trump's social media post about canceling Iran strikes sparked a surge across major indexes. The Nasdaq jumped 2.5%, the S&P 500 gained 1.8%, and the Dow added 1.9%—nearly 930 points—in the best performance for all three indices in two months.

The swings have investors worried that the artificial-intelligence rally driving stocks to records may be faltering. Concerns mount that SpaceX's record $75 billion public offering, launching Friday, is consuming available capital ahead of mega IPOs from Anthropic and OpenAI. Individual investors have reduced single-stock holdings for two consecutive days—the first such occurrence since early Covid-19—suggesting retail investors are hoarding cash for upcoming offerings.

Analysts expect continued turbulence through this IPO-heavy period. Todd Ahlsten of Parnassus Investments maintains caution on all upcoming IPOs caught in the AI hype cycle, while portfolio manager Slavik Kolesnik notes everyone is selling to position for new listings. The volatility reflects a market in transition, not collapse.