NEW YORK, Nov 13 (Reuters) - U.S. stocks rose in light volume on Friday to achieve a second straight week of gains as upbeat retail news reinforced hopes for strong sales in the key holiday shopping season.

* The Dow Jones industrial average .DJI gained 73.00 points, or 0.72 percent, to end unofficially at 10,270.47. The Standard & Poor's 500 Index .SPX rose 6.24 points, or 0.57 percent, to finish unofficially at 1,093.48. The Nasdaq Composite Index.IXIC added 18.86 points, or 0.88 percent, to close unofficially at 2,167.88. (Reporting by Leah Schnurr; Editing by Jan Paschal)