Ken Griffin Snaps Up Neighboring Apartment at 740 Park Avenue for $38M

Ken Griffin isn’t letting the prospect of a pied-à-terre tax slow his Manhattan expansion.

The Citadel founder has reportedly paid $38 million in an all cash deal for a sprawling duplex at 740 Park Avenue, adding to his stake in one of the Upper East Side’s most storied co-ops. The seller—shielded behind a trust—purchased the unit for $20.5 million in 2019, nearly doubling their investment in the latest transaction.

Beyond the building’s prestige and the…