US STOCKS-Wall St posts weekly loss as banks, chipmakers weigh By: Reuters: Company News May 18, 2018 at 16:59 PM EDT * Indexes: Dow flat, S&P 500 dips 0.26 pct, Nasdaq drops 0.38 pct (Updates to market close) Read More >> Related Stocks: Alphabet-A Applied Materials Bank of America Boeing Co Campbell Soup Citigroup Deere & Co JPMorgan Chase & Co Wells Fargo