MIXED BAG: Prices for metals and most energy products fell. Natural gas, corn and soybeans rose.
INVESTOR CONCERNS: Hopes dimmed after the head of the European Central Bank said there is no existing plan to buy government bonds in large quantities to ease the region's crippling debt crisis. Investors shifted money from commodities and stocks into the dollar and U.S. Treasurys.
WHAT'S NEXT: European leaders are attending a summit in Brussels where they are debating the future of the euro. Investors are awaiting any details that may emerge when the event ends Friday.