Options trader Steven Rodriguez works on the floor of the New York Stock Exchange on November 6, 2026, in New York.
Yuki Iwamura/AP
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A $2.5 trillion wipeout for the Nasdaq Composite this week is reminding even the smallest investors just how reliant we’ve all become on the success of the artificial intelligence buildout.

As AI stocks tumbled Thursday, the major indexes dropped sharply, with the Dow, S&P 500 and Nasdaq each posting their worst day in 19 months. The Democrat sweep in the midterm elections is accelerating concerns that moratoriums and other public policy hurdles could slow the pace of AI data center construction.