Stocks ended firmly in the red Friday. On the plus side, buyers came in late and lifted major averages off session lows. The Dow Jones industrial average lost 0.8%, the S&P 500 gave up 0.6% and the Nasdaq eased 0.4%. Preliminary data showed NYSE and Nasdaq volume coming in higher than Thursday’s levels. For the week, the Dow lost 0.6%; the S&P 500 fell 0.9% and the Nasdaq gave up 1.1%.