Updated from 4:04 p.m. ESTWall Street stumbled Thursday amid a flood of economic data and a selloff in Apple ( AAPL) that weighed heavily on tech stocks. The Dow Jones Industrial Average fell 9.22 points, or 0.07%, to 12,567.93, and the S&P 500 gave back 4.25 points, or 0.3%, at 1426.37. The Nasdaq Composite slid 36.21 points, or 1.46%, at 2443.21. Intel ( INTC) was the biggest drag on the Dow industrials for a second day, down 1.9%, and the Philadelphia Semiconductor Sector Index, of which it's also a component, lost 3.9%. On the plus side, the S&P Retail Index rose 1.4%. Volume was again strong, with 2.89 billion shares changing hands on the New York Stock Exchange. Decliners beat advancers by a 5-to-3 margin. Volume on the Nasdaq reached nearly 2.50 billion shares, and losers outpaced winners 11 to 4. Stocks faltered early after the Labor Department's consumer price index for December showed stronger-than-expected inflation. The CPI was up 0.5%, compared with expectations for an increase of 0.4%. The so-called core index, which excludes food and energy prices, rose 0.2%, matching estimates. Core inflation, a closely monitored figure, is now up 2.6% over the past year. The data follow by a day the latest reading of the producer price index, which rose 0.9% last month, a greater-than-expected increase. The core PPI was up 0.2%, also ahead of forecasts. The PPI report measures inflation at the wholesale level.