Steve Ballmer is richer than Bill Gates, a first for Microsoft billionaires

Steve Ballmer surpassed Bill Gates on Monday to become the sixth-richest person in the world, marking the first time the former Microsoft CEO has been wealthier than the company's co-founder. This shift occurred as Microsoft shares reached a new record high, contributing to a 21% gain this year, largely driven by the company's partnership with OpenAI and the AI market rally.