Carl Icahn.

Pershing Square's most recent 13F filing shows a portfolio built around extreme concentration in just two names: CVI and IEP, which together account for the overwhelming majority of reported position weights, with individual line items ranging from roughly 6.8% to as high as 27.3% depending on the share class or filing period represented. This is consistent with the fund's long-standing activist playbook of deploying capital into a handful of high-conviction bets rather than diversifying across a broad basket of equities. The repeated appearance of CVI and IEP across multiple weight brackets suggests either share class distinctions, options exposure, or position adjustments across the reporting window, though the underlying thesis concentration remains unmistakable.