Stock futures were tilting higher Tuesday as markets looked to close out the first half of the year on a positive note.

U.S. Stock Futures Higher as U.S.-Iran Return to Peace Talks

Stocks were poised for gains and oil prices held near prewar levels Monday as investors welcomed a U.S.-Iran agreement to stop fighting.

Wall Street's main indexes opened flat on Tuesday, the final trading day of a quarter that saw equities post the biggest gains in years.