CNBC anchor Mark Haines died in his home on Tuesday evening at the age of 65. He had worked since 1989 at CNBC, where he was the first host of Squawk Box in 1995. Most recently, he worked as one of the co-anchors, along with Erin Burnett, of the network’s Squawk on the Street. CNBC didn't disclose the cause of his death. Haines is survived by his wife, Cindy, and two children, Matthew and Meredith.