Wednesday, March 10, 2010 Market Commentary: US stocks ended higher on the tenth anniversary of the 2000 dot-com bubble. Volume, a critical gauge of institutional demand, was reported mixed compared to the prior session; higher on the Nasdaq exchange and lower on the NYSE. Advancers led decliners by a 2-to-1 ratio on the NYSE and by nearly a 2-to-1 margin on the Nasdaq exchange. There were 50 high-ranked…