Lester Holt announced he is leaving 'Nightly News.' The same day, MSNBC ousted Joy Reid as well as three other anchors

At NBC, Hoda Kotb exited the "Today" show last month, citing a desire to spend more time with her children. "Meet The Press" moderator Chuck Todd left NBC News in January, saying he was "excited about a few new projects that are on the cusp of going from 'pie in the sky' to 'near reality."

Holt has been a calming presence at NBC News, where his unflappable and low-key demeanor helped the news division move forward after a period of tumult. He took over “Nightly” duties after his predecessor, Brian Williams, was removed following scrutiny of claims the latter made about the details of a reporting trip to Iraq.