Substantial stock gains amid questions about US-Iran ceasefire durability, with investors looking to weekend talks for potential long-lasting deal that could drive crude oil prices even lower.

Crude oil down by the most in a single day in about six years already.

Manufacturers struggling with rising fuel costs and shipping headaches, with Hyundai rerouting ships around Africa to avoid Strait of Hormuz, slowing global supply lines.

Anthropic limiting release of latest AI model to major tech firms due to cybersecurity concerns, participating in initiative to test model against their own products.