New York--Jan. 22--The Nasdaq inched lower as the technology sector pulled back after two weeks of strong gains and ahead of a slew of corporate earnings this week. Profit warnings from Dell Computer (US;DELL) and American Express (US;AXP) added downward pressure but strength in biotech and retail issues helped mitigate the losses in the broader market. The Nasdaq closed down 12.47, or 0.45%, to 2757.91 and the Dow was down 9.35, or 0.09%, to 10,578.24. The S&P 500 was up 0.36, or 0.03%, to 1342.90.