Recent stock market swings tied to the AI boom have tightened the race for third-richest person by year-end, with Sergey Brin edging ahead in trader consensus. Alphabet’s steadier performance and Brin’s sizable stake keep him favored over Jeff Bezos, whose Amazon shares face retail and cloud competition, and Jensen Huang, whose Nvidia gains remain volatile despite strong semiconductor demand. Larry Ellison and Michael Dell benefit from Oracle and Dell Technologies’ AI infrastructure tailwinds, while Warren Buffett and Mark Zuckerberg trail on more diversified or slower-moving holdings. With roughly three months left, quarterly earnings, broader tech valuations, and any late-year market shifts will likely decide the final ranking among these closely bunched contenders.