NEW YORK—Oil prices have climbed to the highest level since May on concerns that Iran will cut off more oil to Europe. The surge, which included a 2.6 percent jump on Tuesday, could make gasoline and other fuels more expensive if prices stay high. At a national average of $3.57 per gallo...

Metals prices jumped Tuesday on expectations that demand may improve after a new Greek bailout package was approved and China took another step to stimulate economic growth. Silver finished up 3.7 percent, while prices for platinum, copper and palladium all rose 3 percent or more. Gold ended up 1.9...