BROAD GAINS: Commodity prices rose across the board on hopes that European leaders were close to preparing a plan to contain the region's debt crisis. Energy products, metals and agricultural contracts all ended higher:
GREECE FACTOR: Greece could default on its debt without more emergency funding. Investors have been worried that the crisis could affect the European economy and demand for commodities.
DOLLAR'S IMPACT: Commodities benefited from a weaker dollar. Since commodities are priced in dollars, a weaker dollar makes them more of a bargain for investors using other currencies.