Nasdaq falls 4.5% in its worst week since late June as AI-spending doubts and $110 Brent weigh

The Nasdaq Composite fell 2.14% on Friday to 26,140.03 and 4.5% on the week, its worst since late June, while Brent crude touched about $110 a barrel for the first time since May and the Dow finished the week up 0.7%. Alain Guillot market recap

Alain GuillotStock Market Recap — October 16, 2026 - Alain GuillotFriday | Technology stocks tumble, oil approaches $110, and the Nasdaq suffers its worst week since June

The week combined hotter-than-expected CPI and PPI readings, an eight-session chip-stock slide and doubts about AI infrastructure spending. Which of those do you think matters most for what comes next?