OpenAI’s education head says the company is building global guardrails to ensure A.I. strengthens—not replaces—real education.

Nvidia stock briefly topped a $4 trillion market cap with Nvidia chipmaker Taiwan Semi on tap. AI plays Astera Labs and Rubrik flashed buy signals.

Dan Ives of Wedbush Securities said it’s clear Apple is incapable of producing its own AI in-house, despite a company culture ...