Dimon to Mamdani: Keep NYC Open for Business JPMorgan Chase CEO Jamie Dimon delivered a blunt warning to New York Mayor Zohran Mamdani Thursday, dismissing ideological rhetoric and challenging the progressive mayor to prove he can actually govern the nation's largest city. Original Source: https://www.newsmax.com/finance/economy/jamie-dimon-zohran-mamdani-new-york/2026/05/21/id/1257062