The main indexes were higher and near session highs in early afternoon trading Wednesday. The Nasdaq rose 0.6% and was trading above 5000, a level where it has met resistance. The S&P 500 climbed 0.5%, while the Dow Jones industrial average added 0.4%. The small-cap Russell 2000 led with a 0.7% increase in value. Volume was tracking higher across the board, which indicated that institutional investors were providing fuel to the rally.