Letter: Altimeter's Brad Gerstner and Atreides's Gavin Baker urge Nvidia's board to consider "the potential return of Jensen Huang"; they own $2.13B in Nvidia (Katie Tarasov/CNBC)

Katie Tarasov / CNBC: Letter: Altimeter's Brad Gerstner and Atreides's Gavin Baker urge Nvidia's board to consider “the potential return of Jensen Huang”; they own $2.13B in Nvidia  —  Two major Nvidia shareholders are calling on the board of directors to weigh all options for the company's future leadership …