US STOCKS-Wall St little changed after two-day advance
* Yelp climbs on deal with Yahoo
* Carl Icahn drops Apple buyback demand
* McDonald's posts January sales
* Indexes: Dow off 0.13 pct, S&P off 0.04 pct, Nasdaq up 0.17 pct
By Chuck Mikolajczak
NEW YORK, Feb 10 (Reuters) - U.S. stocks were little changed on Monday, on the heels of the S&P 500's best two-day performance in four months and ahead of new Federal Reserve Chair Janet Yellen's first testimony before lawmakers on Tuesday.
The benchmark S&P 500 rallied Friday for the index's first weekly gain in the past four, as investors looked past a disappointing payrolls report.
Despite the soft payrolls data, affected partly by frigid weather, the Federal Reserve is largely expected to continue its efforts to scale back its stimulus.
Yellen's first test as chair of the Federal Reserve comes Tuesday when she faces U.S. lawmakers, some hostile to the central bank, who will want to know how committed she is to winding down the Fed's support for the economy. Continuación...