Stocks Edge Up In Afternoon; Ag Shares Rally

Wall Street was up slightly in weak trade early Friday afternoon, led by gains in agriculture and health care stocks, amid mixed economic data. The Dow Jones industrials chugged 0.5% higher. The S&P 500 crept ahead 0.4%, while the Nasdaq was flat after being down mildly amid a second straight decline for Apple (AAPL). Volume was little changed on the Nasdaq and down 9% on the NYSE vs. the same time Thursday. Fertilizer maker CF Industries (CF) was