US STOCKS-China rout spooks Wall Street
* China factory activity shrank in December
* Apple down 2 pct
* Crude oil up on tensions in Middle East
* Netflix falls after rating downgrade
* Futures down: Dow 323 pts, S&P 37 pts, Nasdaq 98 pts (Adds details, comment, updates prices)
By Abhiram Nandakumar
Jan 4 (Reuters) - Wall Street looked set to start 2016 on a dour note after weak Chinese economic data reignited fears of global growth and sparked a selloff in stock markets across the world.
Mainland Chinese shares fell 7 percent on Monday, triggering a new circuit breaker that prompted a trading halt, after surveys showed factory activity at the world's second-largest economy shrank sharply in December.
Adding to the investors' worries, China's central bank fixed the yuan at a 4-1/2 year low. Continuación...