US STOCKS-Wall St flat after selloff, but Nasdaq continues to fall
* Whole Foods tumbles after earnings, outlook
* Internet-related shares drop for second day
* Yellen congressional testimony due
* Indexes: Dow up 0.08 pct, S&P down 0.06 pct, Nasdaq off 1.02 pct (Updates to open, adds quote, Yellen remarks)
By Chuck Mikolajczak
NEW YORK, May 7 (Reuters) - U.S. stocks were little changed on Wednesday, but the Nasdaq slid for a second day, dragged lower by weakness in Internet shares.
Stocks such as Amazon.com Inc, down 1.9 percent at $291.50, Facebook Inc, down 2.3 percent at $57.17 and Google Inc, down 1.5 percent at $514.88, all weighed heavily on the Nasdaq, which has shed more than 2 percent over the past two sessions.
"Nasdaq continues to be the underperformer of the group and more air comes out of that momentum trade," said Peter Kenny, chief executive of Clearpool Group in New York.
"It is also providing for a degree of doubt to seep into the market that seems to be resonating with each passing day; in other words, the sense the market's inevitable move is higher is being re-examined the more people focus on Nasdaq. It's having a real impact on market psychology." Continuación...