U.S. stocks moved higher in a choppy session Tuesday, with the Dow Jones industrial average moving above 13,000 for the first time since May 2008. The 13,000 level doesn’t hold a great deal of significance to market analysts, but “it’s nice to see a symbolic number,” Art Cashin, UBS director of floor operations, told CNBC. The Dow last moved above 13,000 on an intra-day basis on May 20, 2008. It last closed above that level on May 19, 2008.