By DANIEL WAGNERU.S. stocks continued a two-day slide Thursday on weak economic data and concern about the Federal Reserve's resolve to keep juicing the economy. Signaling that the U.S. labor market remains in slow recovery mode, the government said more people applied for unemployment benefits last week. The four-week average, a less volatile measure, rose to the highest in six weeks. The Dow Jones industrial average closed down 46.92 points, or 0.3 percent, at 13,880.62. The S&P 500 index dropped 9.53, or 0.6 percent, to 1,502.42. The S&P is headed for its first weekly loss of the year. The Nasdaq composite index lost 32.92, or 1 percent, to 3,131.49. In Europe, markets closed sharply lower after a monthly survey of European executives showed that business activity in the European Union slowed in February, a strong signal that a downturn that began last year will continue into 2013. Benchmark indexes lost 2.3 percent in France, 1.9 percent in Germany, and 1.6 percent in Britain. U.S. indexes have soared this year to the highest levels since the financial crisis but may be ready to fall back to earth, said Kim Caughey Forrest, senior analyst with Fort Pitt Capital Group, a portfolio management firm in Pittsburgh. "I think the market has gotten ahead of itself," she said. She said fourth-quarter earnings have generally met expectations, but only after those expectations were reduced because companies made dire projections in November and December. Wal-Mart Stores rose after beating analysts' profit forecasts in the fourth quarter. However, the biggest retailer warned of a slow start to the year. It gained $1.05, or 1.5 percent, to $70.26. After a strong start to the holiday season, Wal-Mart said, the first three weeks of December were weak, and business has been volatile since then. The company attributed some of the weakness to a delay in tax refund checks that have left people strapped for cash. Wal-Mart's customers also have less money to spend because a temporary payroll tax cut expired in December.