US STOCKS-Wall St extends losses, hit by global growth concerns
* World Bank cuts global growth forecasts
* JPMorgan falls after earnings
* Freeport McMoRan drops on copper weakness
* Indexes fall: Dow by 1.5 percent; S&P 500 1.2 percent; Nasdaq 0.8 percent
* Indexes off: Dow 1.34 pct, S&P 1.08 pct, Nasdaq 0.81 pct (Updates to midday, changes byline)
By Caroline Valetkevitch
NEW YORK, Jan 14 (Reuters) - U.S. stocks fell on Wednesday, on track for a fourth day of losses, as a World Bank forecast sparked concerns about weak economies and December U.S. retail sales missed expectations.
The S&P 500 broke below its 120-day moving average, a technical support level, and came within about 4 points of the low for the year of 1,992.44.
S&P 500 materials, energy and financial sectors all were down more than 2 percent, leading the day's decline. Copper touched its lowest since July 2009 and was last down 6.2 percent at $5,497 a tonne after the World Bank cut its growth forecasts for this year and next. Continuación...