The stock market finished the week Friday on a mixed note, with the Dow and Nasdaq gaining ground even as the S&P 500 fell slightly. The ambiguous results of the day reflected the ongoing effort among investors to predict economic conditions beyond January 20, when the new president-elect will take office. Some stocks performed quite badly, however, and Newmont Mining (NYSE: NEM), Archer-Daniels-Midland (NYSE: ADM), and Molina Healthcare (NYSE: MOH) were among the worst decliners on the day.