It is best known as one of the few investors to foresee and profit from the subprime mortgage crisis of 2007, as described in the book The Big Short by Michael Lewis.

In 2005, Ben Hockett joined as head trader, bringing extensive knowledge of capital markets, derivatives, and fixed income trading.

[1] Ledley, Mai, and Hockett were featured in the film adaptation of The Big Short, fictionalized with the names Charlie Geller, Jamie Shipley, and Ben Rickert, and played by John Magaro, Finn Wittrock and Brad Pitt.

[1] In 2013, Cornwall Capital was reported to have become the largest shareholder of chemicals manufacturer American Pacific Corporation, a NASDAQ-listed U.S. company, with close to 15% of the outstanding stock.

[9] American Pacific Corporation agreed to nominate Haft for election to its board of directors in order to resolve a potential proxy contest.