Solid results from Apple are buoying spirits, as investors brace for PCE inflation and weigh Trump's renewed tariff threat.

The Chinese chatbot took the world by storm and rattled stock markets. But lost in all the attention was a focus on how the company is collecting and storing data.

News from China upset U.S. markets this week and disrupted the frenzy that had built up around artificial intelligence.

The arrival of a Chinese upstart has shaken the AI industry, with investors rethinking their positioning in the space.