US STOCKS-Wall St little changed with Yellen testimony on deck
* Yellen's two-day testimony before Congress to start at 10 a.m.
* Home Depot top boost to Dow, S&P after earnings
* S&P/Case-Shiller edges higher in December
* Toll Brothers rises after results
* Indexes: Dow up 0.12 pct, S&P off 0.03 pct, Nasdaq off 0.22 pct (Adds data, updates to market open)
By Chuck Mikolajczak
NEW YORK, Feb 24 (Reuters) - U.S. stocks were flat shortly after the open on Tuesday, as the Dow and S&P 500 held near record levels before testimony by Federal Reserve Chair Janet Yellen and a flurry of economic data.
Yellen will give the central bank's semi-annual Monetary Policy Report to the Senate Banking Committee at 10 a.m. (1500 GMT), the first of her two days of testimony. Investors will attempt to parse her commentary for clues on the timing of an interest rate hike in the wake of the dovish Fed minutes released last week.
"It's a classic wait-and-see day," said Art Hogan, chief market strategist at Wunderlich Securities in New York. Continuación...