REVISED STOCKPILES: Corn and wheat prices plummeted after a new government report showed U.S. supplies were larger than anticipated. Soybean prices also fell even though stockpiles were lower than expected.
COPPER SINKS: Copper prices fell 2.9 percent after a monthly survey released by HSBC showed China's manufacturing production was stagnant in September. China is a huge importer of the industrial metal.
DOLLAR'S IMPACT: Most commodities were hurt by a stronger dollar. Since commodities are priced in dollars, a stronger dollar makes them more expensive for buyers who use other currencies.