Trade picked up late Tuesday as stocks logged their worst losses in two weeks. The Nasdaq fell 0.6%, the S&P 500 ended down 0.5% and the Dow Jones industrial average shaved off 0.3%. According to preliminary data, volume finished lower on the NYSE but higher on the Nasdaq. In the stock market today losers topped winners by about 3 to 2 on the NYSE and 8 to 5 on the Nasdaq.