Nasdaq sets new 12-yr high

Dow and S&P 500 index closed near the flatline overnight as investors remained cautious ahead of
Federal Reserve's policy statement. 
Dow Jones Industrial Average fell 1.38 points to close at 15,520.59.
S&P 500 added 0.63 points to close at 1,685.96. Among key S&P sectors, telecom shares dropped, while technology stocks closed up.
Nasdaq composite rose 17.33 points to 3,616.47, highest close in nearly 12 years.