US STOCKS-IBM, United Tech drag Dow; Apple earnings on deck By: Reuters: Company News July 21, 2015 at 16:28 PM EDT * Indexes down: Dow 1.00 pct, S&P 0.43 pct, Nasdaq 0.21 pct (Updates to close, adds Microsoft and Yahoo shares) Read More >> Related Stocks: Apple International Business Machines Microsoft United Technologies Yahoo