Dow Jones falls 800+ pts; energy shares up 2.6%; General Dynamics beats earnings estimates; Verra Mobility reaches agreement with Avis.

US stocks trade higher, Dow up 1% on Tuesday. Boeing gains 5% after reporting Q2 results. Kiniksa Pharma, OPKO Health, Itron, up over 20%.

Dow Jones falls 800+ pts; energy shares up 2.6%; General Dynamics beats earnings estimates; Verra Mobility reaches agreement with Avis.