Lisa Su , the CEO of Advanced Micro Devices, has built one of the world's most valuable companies and made investors billions — but is barely a billionaire herself. She has delivered a 70-fold increase in her company's stock price during her 11 years in charge, including a 41% surge this week to fresh highs thanks to its OpenAI partnership . The chipmaker's market value has soared to $378 billion, surpassing Home Depot, Bank of America, and Procter & Gamble. Yet Su doesn't rank among the world'