U.S. stock indexes falter on Intel, IBM By: MarketWatch April 18, 2012 at 09:58 AM EDT U.S. stocks opened lower Wednesday after technology heavyweights Intel Corp. and International Business Machines Corp. reported results that disappointed. Read More >> Related Stocks: Berkshire Hathaway BlackRock Halliburton Co Intel Corp International Business Machines Standard & Poors 500 Textron Yahoo