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Nasdaq drops 2.6% on AI concerns, French debt yields top 5% – Morning Market Brief 23 October 2026

Weaker macroeconomic data from across Europe hit the banking sector, while cautious investors fled from broad market risk to safe-haven US Treasuries.
Today’s topics:
- Painful reality check for AI optimism hits Wall Street
- Bond market divergence: French troubles and the U.S. safe haven
- Weakening Europe drags down banking and luxury sectors
+ 4 more topics in the full brief
