Stocks finished largely unchanged in lackluster trading Friday as investors remained on the sidelines ahead of next week's flurry of earnings reports, but still pulled off their second-straight weekly gain.
"The bulls really need a breakout here," said Art Cashin, director of floor operations at UBS Financial Services. "You've got to make a credible run toward 1,500 [on the S&P 500] and that itself may stampede some money from the sidelines." (Read More: Investors Back Into Stocks? Market Will 'Hit a Brick Wall')