Nvidia's $442 Billion Day: Why the Rest of the Market Didn't Follow

Nvidia's $442 billion single-day market cap gain was historic, but the rally underneath it was narrow — only tech finished higher, even as Salesforce and CrowdStrike surged on their own guidance raises. With oil rebounding and Kevin Warsh set to speak at Jackson Hole, here's what actually moved markets Thursday and what to watch next.