Keenan had a distinguished career as an anchor and financial analyst and most recently served as a Sunday columnist for the New York Post.
“It is with tremendous sorrow that we report the passing ... of a wonderful mother, wife, sister and pioneering financial journalist,” her family said in a statement published by Mediaite.
Keenan died at Lenox Hill Hospital in New York.
She joined CNN in 1986 as a producer for the cable network’s “Moneyline” program and later became an on-air correspondent.
From 1995 to 1998 she served as an anchor at CNBC, and then rejoined CNN.
She went to work for Fox News in 2002 as a business correspondent and anchor of “Cashin’ In.”
After taking time off to raise her son, Keenan returned to journalism as a financial columnist.
She is survived by her husband, Ron Kass, her son, Benno Kass and sisters Joellen Gardner and Linda Keenan.