US STOCKS-U.S. stocks fall as Wal-Mart, energy stocks weigh
* Wal-Mart hits over 2 year low after weak results
* Energy, material stocks hit by China fears
* Disney, media companies hit by Wells Fargo downgrade
* Home Depot results, housing data a bright spot
* Indexes down: Dow 0.23 pct, S&P 0.29 pct, Nasdaq 0.50 pct (Updates to early afternoon)
By Tanya Agrawal
Aug 18 (Reuters) - U.S. stocks fell in early afternoon trading on Tuesday, dragged down by Wal-Mart's weaker-than-expected results and a selloff in energy and material shares on renewed fears about China.
Wal-Mart fell as much as 3.3 percent to a nearly 2-1/2 year low of $69.55 after its weak results and forecast. The stock was the biggest drag on the Dow and the S&P.
Chinese stocks plunged again, reigniting fears that Beijing may be intent on a deeper devaluation of the yuan and pushing oil prices and industrial metals, including copper, to near six-year lows. Continuación...