Commodity prices to weigh on Wall Street as banks report By: CNBC.com News January 14, 2015 at 05:42 AM EST U.S. stock index futures signaled a lower open on Wednesday, as weak oil prices hit copper and mining stocks and investors awaited bank earnings. Read More >> Related Stocks: Burberry Group Plc ADR Glencore International Plc ADR Greif Bros Corp JPMorgan Chase & Co Sentinelone Inc Cl A Shaw Communications Wells Fargo