US STOCKS-Wall St mixed, Apple impresses and Twitter disappoints
* Fed starts two-day monetary policy meeting on Tuesday
* McDonald's, Verizon fall on weak results
* Caterpillar, Texas Instruments rise on upbeat earnings, forecast
* Indexes: Dow -0.1 pct, S&P +0.03 pct, Nasdaq +0.24 pct (Updates with quarterly reports after the bell)
By Noel Randewich
July 26 (Reuters) - U.S. stocks were mixed on Tuesday as Federal Reserve policymakers kicked off a two-day interest rate meeting and investors braced for quarterly scorecards from Apple and Twitter.
Choppy stock trading followed a recent rally to consecutive record highs on the S&P 500 that has stretched price-to-earnings multiples to levels that some investors say presumes that companies will beat second-quarter estimates.
Five of the 10 major S&P sectors rose, while a 1.49 percent drop in the telecom services index weighed heavily. Verizon Communications fell 1.9 percent after subscriber numbers fell below estimates.
Caterpillar's shares jumped 5.16 percent to touch a year high after quarterly earnings beat expectations. Continuación...