Wall St stumbles in early trade General Electric shares fell in early activity on Friday as the largest US industrial group warned that demand for wind turbines had softened and orders were expected to decline. Shares in GE declined 1.8 per cent to $22.41 as the company said orders at its industrial business slipped 5 per cent to $21.5bn in the quarter, compared with the same period a year ago. The Dow Jones Industrial Average edged 0.5 per cent lower to 13,479.61 in morning trading. The Big Board was also sent lower as McDonald's , the world's largest restaurant chain by revenues, said its quarterly results were stymied by global economic weakness and failed to meet market forecasts for the period. Shares in the company fell 3.3 per cent to $89.73. The S&P 500 lost 0.4 per cent to 1,451.38 as stocks looked to hold on to impressive gains throughout the week. The benchmark index has risen 1.5 per cent despite mixed results from some of the country's largest corporations. The Nasdaq Composite index fell 0.6 per cent to 3,055.83 as shares in Apple , the heaviest weighted stock on the tech heavy index, were 0.8 per cent lower to $627.53. The iPhone and iPad maker is expected to unveil a mini version of its popular tablet device next week. Google shares recovered 0.6 per cent to $699.41 after the internet search engine suffered heavy losses on Thursday when it reported disappointing quarterly results. The company's shares have lost 6.1 per cent over the week. "Although we see notable growth from core Google business, we have concerns about Google sites" revenue, an increase in traffic acquisition costs, and margins at Motorola Mobility," analysts at S&P Capital IQ said. We think mobile is going to continue to negatively impact advertising pricing, and see more of a focus on hardware revenues and investment restraining margins. Microsoft , the world's largest software maker, lost 1.9 per cent to $28.94 after it said consumers bought fewer personal computers in the three-month period to September. The company is preparing to launch its Windows 8 operating system and a new tablet next week to help it compete with companies such as Apple and Google. Archer Daniels Midland , the agricultural commodities trading company, lost 0.5 per cent to $28.93 as it bought a stake in GrainCorp, a smaller Australian rival.