Today's Bell Ringers, December 27, 2017

9:15 AM ET Wed, 27 Dec 2017

Ringing today's opening bells are Colleen Sheehey-Church, Mothers Against Drunk Driving national president, marking the organization's 37th year at the NYSE, and Steve Fastook, CNBC Technical Operations senior vice president and CNBC's technical and engineering team celebrating "Squawk Box's" new set at the Nasdaq.