He's known as a Jamie Dimon protegé, a 9/11 hero, and an operational expert. Now Fiserv's Frank Bisignano can add government hell-raiser to his résumé.
Activist short-seller firm Hindenburg Research is calling it quits after an impactful eight-year run in which its reports took on high-profile investors like Carl Icahn and Gautam Adani and helped ...