US STOCKS-Wall St falls with oil prices, Alcoa results drag

                                
  
                                
 * Oil prices sink, hitting energy stocks
                                
 * Alcoa Q1 revenue misses estimates, stock slides
                                
 * Japan raises nuclear crisis level to same as Chernobyl
                                
 * Dow off 1 pct, S&P off 0.8 pct, Nasdaq off 1 pct
                                
 * For up-to-the-minute market news see [STXNEWS/US]
 (Updates to late afternoon, changes byline)
                                
 By Caroline Valetkevitch
                                
 NEW YORK, April 12 (Reuters) - U.S. stocks dropped on
Tuesday as falling oil prices took money out of the market's
best-performing sector, while Alcoa's leaner-than-expected
revenue disappointed investors.
                                
 Energy stocks led the S&P 500's losses, with the S&P
Energy Index <.GSPE> down 3.1 percent. Dow component Chevron
Corp <CVX.N> dropped 3.4 percent to $104.08.
                                
 Oil prices tumbled for a second day following a Goldman
Sachs forecast calling for a fall of almost $20 in the price
of Brent crude oil <LCOc1> in coming months. [ID:nN12168871]
The International Energy Agency also said high prices could
curb oil demand. For details, see [ID:nN12221543]
                                
 U.S. crude is up about 16 percent since the start of the
year largely because of unrest in oil-heavy regions of the
Middle East and North Africa, while the S&P energy index is up
11.1 percent -- well above the S&P 500's gains of 4.6 percent
since the start of the year.
                                
 A reversal in oil prices could signal the same in
oil-related stocks, some strategists suggest.
                                
 "The leadership has been for longest time in those sectors
that are highly related to global growth and commodity prices.
So once the commodity space starts rolling over, then equities
are poised to follow," said Robbert Van Batenburg, head of
equity research at Louis Capital in New York.
                                
 Alcoa Inc <AA.N> slid 6.2 percent to $16.67 and was among
the Dow's biggest percentage losers a day after it reported
revenue that missed forecasts, though its profit topped
consensus expectations.
                                
 Materials stocks in general were down with declines in
metals prices, with worries that Japan's massive earthquake
and a nuclear crisis could weaken recovery prospects in the
world's third-largest economy.[ID:nLDE73B066]
                                
 The Dow Jones industrial average <.DJI> was down 127.79
points, or 1.03 percent, at 12,253.32. The Standard & Poor's
500 Index <.SPX> was down 10.44 points, or 0.79 percent, at
1,314.02. The Nasdaq Composite Index <.IXIC> was down 27.35
points, or 0.99 percent, at 2,744.16.
                                
 Japan raised the severity of the Fukushima nuclear power
plant accident to the highest level on the International
Nuclear and Radiological Event Scale, putting it on par with
the Chernobyl 1986 disaster.
                                
 "Japan is looming large in background," Van Batenburg
said, noting warnings about supply issues by Japanese
companies. "When coming into earnings season with that kind of
outlier, people are going to take a step back."
                                
 The S&P Materials Index <.GSPM> fell 1.2 percent while
U.S.-traded shares of Rio Tinto <RIO.N> fell 2.5 percent to
$71.94. Freeport-McMoRan Copper & Gold Inc <FCX.N> shed 3
percent to $53.79.
 (Reporting by Caroline Valetkevitch; Editing by Jan Paschal)