John Mack, Who Led Morgan Stanley Into a Crisis, Regrets Little

Up Close and All In teems with its star’s name. “You’ve got to talk to John Mack,” a Duke University bigwig tells corporate recruiters. “Goddamn it,” an early Wall Street coworker says after seeing him in action, “John Mack just did that!” One veteran tells a big-time rival he’s now No. 2, behind a new No. 1: “John Mack!” When he lets a colleague take the bigger bedroom at the Dolder Grand in Zurich, their German-accented concierge announces: “Herr Mack, you are a true gentleman.” Then, after leaving Morgan Stanley amid a power struggle in 2001 and returning in 2005 as …