Most of the money was poured into three main super PACs, both pro-Cuomo and anti-Mamdani. Fix the City, the PAC supporting Cuomo’s bid since the primary, spent millions on television ads for the former mayor and against Mamdani. Anti-Mamdani PACs Defend NYC—started by former advisor to President Donald Trump, Jason Meister—and For Our City, have also taken in giant sums from billionaire donors like former mayor Michael Bloomberg and hedge fund manager Bill Ackman.

From article:

• Michael Bloomberg ($13.3 million)
• Lauder Family ($2.6 million)
• Joe Gebbia ($2 million)
• Bill Ackman ($1.75 million)
• Barry Diller ($500,000)
• Laurie Tisch ($150,000)
• Steve Wynn ($500,000)
• Alice Walton ($200,000)