US STOCKS-Wall St wavers ahead of Fed meet, Apple earnings
* FOMC begins two-day meeting on Tuesday
* McDonald's, Verizon fall on weak results
* Caterpillar, Texas Instruments rise on upbeat earnings, forecast
* Indexes: Dow down 0.2 pct, S&P down 0.5 pct, Nasdaq up 0.16 pct (Updates to early afternoon)
By Yashaswini Swamynathan
July 26 (Reuters) - U.S. stocks swung between small gains and losses on Tuesday afternoon as mixed earnings reports kept investors on the edge ahead of the Federal Reserve's two-day policy meeting and Apple's results.
A set of strong economic data, including Tuesday's housing report, could strengthen the case for the Fed to raise rates earlier than the market anticipates.
Traders have priced in an 18.7 percent chance of a rate increase in September and a 42.8 percent chance in December, according to CME Group's FedWatch tool.
"Investors have had the opportunity to drink from a fire hydrant of information," said Eric Wiegand, senior portfolio manager at the Private Client Reserve at U.S. Bank. Continuación...