Lisa Su, chair and chief executive officer of Advanced Micro Devices Inc. (AMD), during a Bloomberg Television interview in San Francisco, California, US, on Monday, Oct. 6, 2025.
AMD stock climbed 11% on Wednesday, continuing a massive run since OpenAI announced plans to buy billions of dollars of AI equipment from the chipmaker earlier this week.
On Monday, the ChatGPT maker entered into an agreement to potentially own 10% of AMD, based on its stock price and partnership milestones.
AMD now has a market cap of $380 billion after climbing 4% on Tuesday and 24% on Monday. Shares are up 43% so far this week, on pace for the best weekly gain since April 2016.
The partnership with OpenAI, which has historically been closely linked with Nvidia , has bolstered investor confidence that AMD will be a viable competitor to Nvidia in AI chips.