Blackstone Group LP’s Byron Wien said the Standard & Poor’s 500 Index may climb past 1,400 this year.

Wien, chairman of the advisory services unit of the world’s biggest private-equity firm, predicted stocks will outperform in the second half of the year, compared with the first six months. The S&P 500 closed Tuesday at 1,341.47.

Wien spoke in an television interview on “Bloomberg Surveillance” with Tom Keene.