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Bill Ackman slams Mamdani policies as 'very bad for New York,' won't rule out mayoral run himself

Reported by New York Post
Jul 23, 2026· 3 min read
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Key Takeaways
  • • Bill Ackman commits substantial financial backing to NYC mayoral race — pledging "hundreds of millions of dollars" to support candidates opposing socialist candidate Zohran Mamdani, with initial $1 million donation reported against Mamdani's candidacy.
  • • Ackman characterizes Mamdani's tax policies as economically harmful — the Pershing Square CEO argues that Mamdani's plan to tax the wealthy would be "very bad for New York" and poses a material risk to the city's financial and business environment.
  • • Strategic candidate positioning emerges — Ackman endorses incumbent NYC Mayor Eric Adams and calls for other candidates, including Andrew Cuomo and Curtis Sliwa, to exit the race to consolidate opposition to Mamdani's candidacy.
  • • Ackman signals openness to direct political entry — does not rule out a mayoral run himself, positioning himself as a potential alternative to prevent what he characterizes as a problematic electoral outcome.
  • • Mamdani dismisses billionaire opposition — on the Flagrant Podcast, the mayoral candidate directly rebutted Ackman's claims regarding his tax-increase proposals, indicating a contentious ideological divide on wealth taxation and fiscal policy.
Summary
Billionaire hedge fund manager Bill Ackman has injected himself into New York City's 2026 mayoral race with aggressive financial and rhetorical positioning against candidate Zohran Mamdani. Ackman has pledged "hundreds of millions of dollars" to oppose Mamdani's candidacy, beginning with a reported $1 million donation, and has publicly stated he is willing to bankroll alternative candidates willing to challenge the socialist candidate's economic agenda.

Ackman's core objection centers on Mamdani's proposed tax policies targeting high-income earners. The Pershing Square CEO characterizes these policies as "very bad for New York," arguing they pose a material economic threat to the city. Ackman has indicated that wealthy New York residents are poised to fund opposition campaigns substantially, suggesting deep concern among the affluent business community regarding potential redistributive taxation.

Strategically, Ackman has endorsed incumbent Mayor Eric Adams and called for competing candidates Andrew Cuomo and Curtis Sliwa to withdraw from the race. He has claimed that Sliwa's continued candidacy has elevated Mamdani's perceived chances to approximately 90%, framing the race as a consolidation problem among non-socialist alternatives. Notably, Ackman has not ruled out a mayoral run himself, positioning such an entry as a potential safeguard against what he views as an economically damaging electoral outcome.

Mamdani has actively pushed back against Ackman's characterization of his tax proposals, appearing on the Flagrant Podcast to directly rebut the billionaire's claims and challenge the framing of his wealth-taxation agenda. This public exchange underscores a fundamental ideological division on fiscal policy and wealth redistribution within the mayoral race, with Ackman representing institutional wealth interests and Mamdani representing a progressive tax-increase platform.

The episode illustrates how concentrated wealth can mobilize politically when perceived existential economic threats emerge at the municipal level, while also demonstrating organized resistance to billionaire political influence.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

New York Post Bill Ackman slams Mamdani policies as 'very bad for New York,' won't rule out mayoral run himself