US STOCKS-Wall St lower on weak China data, fall in oil prices
* Chinese factory activity contracts at fastest pace since 2012
* Google, Mattel to report after the close
* Twitter jumps after rumors of private equity deal
* Indexes down: Dow 0.59 pct, S&P 0.56 pct, Nasdaq 0.47 pct (Updates to early afternoon)
By Tanya Agrawal
Feb 1 (Reuters) - U.S. stocks were lower on Monday as weak Chinese economic data exacerbated concerns about a global slowdown and oil prices resumed their slide.
The data from China showed that the world's second-largest economy's manufacturing sector contracted in January at the fastest pace since 2012.
Oil prices fell about 6 percent after the China data added to worries about demand and an OPEC source played down talk of an emergency meeting to stem the decline. Oil prices have fallen more than 70 percent since mid-2014.
Adding to the cautious note, data on Monday showed that U.S. consumer spending was unchanged in December and manufacturing activity continued to contract in January. Continuación...