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Dave Portnoy unloads on NYC’s Mamdani for targeting Ken Griffin’s $238M penthouse — now a $6B plan could be pulled

Yahoo Finance · May 5, 2026, 12:00 PM · Also reported by 1 other source

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Fast Company ‘He put me in harm’s way’: Ken Griffin responds to Mamdani’s viral video of his $239 million NYC penthouse

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Dave Portnoy unloads on NYC’s Mamdani for targeting Ken Griffin’s $238M penthouse — now a $6B plan could be pulled

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