Description:Wall Street is building on modest gains with the S&P 500 heading for its eighth up week in a row. The Dow is back above 14,000, The S&P 500 is at a new 5-year high, and the Nasdaq closed at a fresh 12-year high. After the bell, Dell announced an 11 percent drop in quarterly revenues, but the decline was not as big as analysts anticipated. Earnings, ex-items, also topped forecasts as founder Michael Dell tries to grapple with weaker demand for PCs by trying to take the company private.(2:04)