Wall ?Street's main ?indexes were ?mixed at open on Tuesday as fresh hostilities ?in ?the Middle ?East pushed oil ?prices to their highest ?since late July, while markets await inflation ?data due ?later ?this week.The ?Dow ?Jones Industrial ?Average fell 303.8 points, or ?0.57%, at the open ?to 53,110.45. The S&P 500 fell 0.8 points, or ?0.01%, at the open to ?7,717.81, ?while ?the Nasdaq Composite rose 21.6 points, or 0.08%, to ?26,528.571.