Nasdaq Suffers Worst Week Since June. AI Fears Are Shaking Markets. Nasdaq Suffers Worst Week Since June. AI Fears Are Shaking Markets. · Barrons.com · Marketwatch Barrons.com Fri, October 16, 2026 at 4:02 PM EDT 1 min read ^IXIC -2.14% ^GSPC -1.09% SOXX -4.14% ^VIX +21.46% TMUBMUSD02Y Trade SOXX on Coinbase Trading disclosure Trading disclosure The above button links to Coinbase. Yahoo Finance is not a broker-dealer or investment adviser and does not offer securities or cryptocurrencies for sale or facilitate trading. Coinbase pays us for certain activity generated through this link. Prices displayed are informational.
Ballooning artificial intelligence fears sent the Nasdaq tumbling to its worst week since June.