90 Seconds with Art Cashin: The Skeptics Are Still There

11:40 AM ET Tue, 19 Feb 2013

CNBC's Bob Pisani and Art Cashin, of UBS, discuss the "positive feedback loop," where stocks go up for no apparent reason. Cashin says his frustration is that even though the markets have punched through key levels, people haven't come in from the sidelines.