NEW YORK, NEW YORK - FEBRUARY 05: Lester Holt visits SiriusXM ... of NBC’s flagship newscast, Holt has kept the program competitive, fighting a tight race with ABC’s World News Tonight.

Lester Holt, the anchor and managing editor of “NBC Nightly News” for a decade, announced Monday that he is stepping down from the long-running broadcast at the beginning of the summer.

Lester Holt will leave his post as anchor of NBC’s “Nightly News” program this summer but remain at the network and expand his role hosting “Dateline,” he told colleagues in an ...