US STOCKS-Futures tumble as China allows yuan to fall further
* Futures down: Dow 379 pts, S&P 45.25 pts, Nasdaq 133.75 pts
By Tanya Agrawal
Jan 7 (Reuters) - U.S. stock index futures fell sharply on Thursday after China allowed the yuan to fall further and oil prices slid to near 12-year lows, raising concerns over the state of the global economy.
* China allowed the biggest fall in the yuan in five months, and Shanghai stocks slid 7.3 percent to trigger the second trading halt this week.
* With Beijing accelerating the yuan's depreciation to make its exports more competitive, investors fear China's economy is even weaker than had been imagined.
* Oil slid below $33 a barrel to near 12-year lows, as a tumble in Chinese equities rattled investors already concerned by near-record production and massive stockpiles of unwanted crude and refined products.
* European stocks were also at their lowest levels since late August, when concerns over China's economy roiled global stock markets.
* U.S. stocks closed at their lowest level since early October on Wednesday.
* Shares of Apple were down 2.9 percent to $97.80, following reports of slowing shipments of the iPhone 6S and 6S Plus. Continuación...