The cause of death is unknown.
“With his searing wit, profound insight and piercing interview style, he was a constant and trusted presence in business news,” said CNBC president Mark Hoffman in a statement. “He was the unflappable pro. He loved CNBC and we loved him back. He will be deeply missed.”
Haines launched Squawk Box in 1995, six years after joining the then-nascent cable network. In 2005 he became co-anchor of CNBC’s Squawk on the Street with Erin Burnett, who’s now at CNN.
Haines is survived by his wife, Cindy, and his two children, Matt and Meredith.