U.S. stock prices declined for a sixth consecutive trading day this morning, the longest losing streak since April 2002, after forecasts at Apple Inc. and Motorola Inc. that fell short of earlier estimates spurred concern that consumers are spending less as the economy slows, Bloomberg reported.

Apple shares fell the most in more than five years on the Nasdaq Stock Market after the company said iPod sales were little changed in the United States. Motorola, the largest U.S. maker of mobile phones, posted its biggest decrease since October 2002 after forecasting an unexpected first-quarter loss.

The Standard & Poor’s 500 index was down 25.82 points, or 1.97 percent, to 1,284.68 at 11:10 a.m. The Dow Jones industrial average fell 191.60 points, or 1.6 percent, to 11,779.59. The Nasdaq composite index declined 70.02, or 3.05 percent, to 1,284.68. Europe’s benchmark index tumbled after the European Central Bank damped speculation that it would follow the Federal Reserve in cutting interest rates, while Asian shares recovered from the worst two-day decline in 18 years.

Technology companies and energy producers, which helped lead the market’s advance last year, have been among the biggest decliners in 2008 as the fallout from the collapse of the subprime mortgage market threatens to drag the economy into recession.

Investors were concerned when Apple missed the most optimistic projections for first-quarter profits and forecast that sales growth would slow to 29 percent this quarter from 35 percent in the previous three months. Motorola forecast an unanticipated loss for the first quarter after posting an 84 percent decrease in fourth-quarter profits as customers purchased phones made by Apple and Samsung Electronics Co. Fourth-quarter net income dropped to $100 million, or 4 cents a share, while sales fell 18 percent to $9.65 billion.