Broadcom stock surged as much as 9% on Monday. The move was sparked by a major AI chip deal inked with OpenAI. Business Insider is keeping tabs on the biggest numbers driving OpenAI news. Check back daily for updates. The move: Broadcom stock spiked as much as 9% on Monday. The chip maker is up 50% in 2025. Why: Broadcom and OpenAI announced a strategic agreement on Monday for 10 gigawatts of custom AI accelerators. Under the agreement, OpenAI will design the systems, which Broadcom will help develo ...