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My Daily AI & Markets Briefing · July 28 · 10 min

AI Daily: Tuesday, July 28, 2026

SOXL cratered 17.55% in its worst single-day semi rout in months, dragged down by China chip progress, AI capex fears, and Michael Burry expanding his short bets against semiconductors. • Microsoft launched its first AI-native cybersecurity model and an agentic threat-response platform, taking direct aim at CrowdStrike and Palo Alto Networks. • Nvidia, Microsoft, Google, SpaceX, and OpenAI joined an open-weights AI coalition while Anthropic CEO Dario Amodei drew a clear line — not a ban, but serious concern about Chinese open-weight models. • OpenAI and Google DeepMind are lobbying Congress against a DHS-powered AI kill switch, arguing that once models leave company servers, control is effectively lost. • A $500 reinforcement-learning fine-tune of a 9-billion-parameter open model outperformed expensive frontier models on a real commercial catalog task, validating cheap, targeted specialization.

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SOXL cratered 17.55% in its worst single-day semi rout in months, dragged down by China chip progress, AI capex fears, and Michael Burry expanding his short bets against semiconductors. • Microsoft launched its first AI-native cybersecurity model and an agentic threat-response platform, taking direct aim at CrowdStrike and Palo Alto Networks. • Nvidia, Microsoft, Google, SpaceX, and OpenAI joined an open-weights AI coalition while Anthropic CEO Dario Amodei drew a clear line — not a ban, but serious concern about Chinese open-weight models. • OpenAI and Google DeepMind are lobbying Congress against a DHS-powered AI kill switch, arguing that once models leave company servers, control is effectively lost. • A $500 reinforcement-learning fine-tune of a 9-billion-parameter open model outperformed expensive frontier models on a real commercial catalog task, validating cheap, targeted specialization.

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