U.S. stock futures declined as Dell  tumbled and reports from Europe and China fueled concern about the global economy.

Dell, the third-largest maker of personal computers, sank  after its sales forecast missed analysts’ estimates.

Global stocks fell as a gauge of European services and manufacturing output unexpectedly shrank in February. China’s manufacturing may shrink for a fourth month, according to data from HSBC Holdings Plc and Markit. In the U.S., sales of previously owned homes probably rose last month to the highest level since May 2010, analysts said before a National Association of Realtors report today.

Global stocks:

Nikkei  9,554 +90.98 +0.96%

Hang Seng 21,549.28 +70.56 +0.33%

Shanghai Composite 2,403.59 +22.16 +0.93%

FTSE  5,913.2 -15.00 -0.25%

CAC  3,453.38 -11.86 -0.34%

DAX 6,868.08 -40.10 -0.58%

Crude Oil $105.96 (-0,3%).

Gold $1754.00 (-0,2%).