Indices closed in green territory on Monday. Brands such as Apple, Boeing, and American Express led advancers. Meanwhile, energy stocks such as Exxon Mobil and Chevron stepped up on an increase in crude oil prices. For the session, West Texas Intermediate crude tacked on 0.2% to settle at $59.33 a barrel. Looking ahead, earnings season continues with reports due this week from companies including PepsiCo, Cisco, and Credit Suisse.