US STOCKS-Wall Street tumbles on global economic worries
* World Bank cuts global growth forecasts
* JPMorgan falls after earnings
* Freeport McMoRan drops on copper weakness
* Retail sales fall short of estimate
* Indexes off: Dow 1.34 pct, S&P 1.08 pct, Nasdaq 0.81 pct (Updates to late morning)
By Chuck Mikolajczak
NEW YORK, Jan 14 (Reuters) - U.S. stocks dropped on Wednesday, putting equities on pace for their fourth straight losing session as a World Bank forecast sparked concerns about weak economies and U.S. retail sales for December missed expectations.
Copper touched its lowest since July 2009 and were last down 5 percent at $5,563 a tonne after the World Bank cut its growth forecasts for this year and 2016. Shares of Freeport McMoRan Inc tumbled 11.8 percent to $18.55 as the worst performer on the S&P 500.
Oil prices remained volatile, struggling to find a floor. Brent crude fell to a low of $45.59 before paring losses to trade down 0.5 percent to $46.35, while U.S. crude was up 0.2 percent at $45.96 after falling as low as $45.01. U.S. crude stocks rose far more than expected last week according to data from the Energy Information Administration. Continuación...