US STOCKS-Wall St ends down for 4th day on global growth worries
* Energy index ends higher as U.S. oil futures rally late in session
* World Bank cuts global growth forecasts
* JPMorgan falls after earnings
* Freeport McMoRan drops on copper weakness
* Indexes off: Dow 1.1 pct, S&P 0.6 pct, Nasdaq 0.5 pct (Updates to close)
By Caroline Valetkevitch
NEW YORK, Jan 14 (Reuters) - U.S. stocks fell for a fourth day on Wednesday as a World Bank forecast fueled concerns about global economic weakness and copper prices sank, although a late-day rebound in energy shares left the market well off its lows after a volatile session.
The S&P energy index ended up 0.1 percent after falling as much as 2.6 percent. It rebounded late in the day as oil prices jumped by the most in more than two years ahead of options expiration. Crude oil prices remained near six-year lows despite the day's jump, however.
S&P 500 materials and financial sectors were the day's worst performers, both falling more than 1 percent. Continuación...