The New York Stock Exchange, reassured by positive five sessions, hoping to see the specter of recession away from the United States and the Federal Reserve, on Tuesday and Wednesday to encourage an economy still shaky.
"The technology sectors, banking and retail sales have done well (the markets). It was a week very constructive," said Marc Pado, an analyst at Cantor Fitzgerald.
In the past week, the Dow Jones took 4.7%, closing Friday at 11,509.09 points. The index of 30 blue-chip Wall Street had not experienced five consecutive positive sessions since the last week of June.
The Nasdaq, dominated by technology, gained 6.25% to 2622.31 points and the broader index S & P 500 5.35% to 1216.01 points.
But these five sessions up should not be misled: "It's an improvement, nothing," Gregori Volokhine slice of Meeschaert New York.
"The growth that we see has little to do with the U.S. economy," said Marc Pado, even if investors and analysts now exclude the specter of recession, just like , Hugh Johnson Advisors to which "it is only a slowdown."
All eyes on Europe, trying to stem the crisis of sovereign debt, the place New York was relieved by the assurances given by Paris and Berlin in the maintenance of Greece into the euro area.
As stock markets of the Old World, Wall Street was then boosted by the announcement of five major global central banks to expand the supply of dollar markets.
United States, the indicators remain in the red: U.S. industrial production slowed in the net in August, declining manufacturing activity in the New York area for the fourth consecutive month, and increase in new listings weekly unemployed.
"For really come away with a well oriented market, we must have more visibility on growth in the U.S. and U.S. growth, we must see an improvement in labor markets, the start a solution in Europe and not just short-term measures and temporary, "warns Dr. Volokhine.
Designed to whip the labor market, in terms of employment that President gave to Congress Monday failed to convince many investors, especially since the Republican opposition makes almost impossible the adoption state.
"This is more than raise taxes and expand the coverage of unemployment insurance to provide long-term response to the structural shift that is in the labor market," Judge Lindsey Piegza of FTN Financial.
The long-awaited meeting of the Monetary Policy Committee of the Fed (FOMC) held Tuesday and Wednesday. A lower rate seems unthinkable, then it is almost zero since December 2008.
For many analysts, the FOMC is expected to increase the maturity of its portfolio. This should allow the Fed to lower rates a bit more interest in the long term - and thus boost investment - without having to create a new currency, which could eventually feed the inflation.
Two indices will also be followed this week: the numbers of housing starts (Tuesday) and those in sales of existing homes (Wednesday).