U.S. stocks fell on Tuesday as investors sold on the last day of the third quarter to re-position themselves for year-end trading in a session marked by lackluster U.S. data. U.S. stocks fall in end-of-quarter selloff; Dow declines 0.17% Window dressing sends U.S. stock prices falling. At the close of U.S. trading, the Dow 30 fell 0.17%. Equities edged lower on Tuesday as investors took the end of the third quarter to sell stocks with the aim of buying growth stocks towards the end of 2014 to boost yearly fund performance. Lackluster U.S. data added to Tuesday's selloff as well. The Conference Board reported earlier that its consumer confidence index fell to 86.0 this month from 93.4 in August, whose figure was revised up from a previously reported 92.4. Analysts expected the index to decline to 92.5 in September. A separate report showed that a Chicago-area purchasing managers' index fell to 60.5 this month from 64.3 in August. Analysts had expected the index to decline to 61.9 in September.