Investors hope to shake off a dismal jobs report Monday, while monitoring Europe's debt crisis and nuclear tensions on the Korean Peninsula.
Monday also marks the unofficial start of first-quarter earnings season, with aluminum producer Alcoa ( on tap to report results after the closing bell. )
In other corporate news, General Electric ( said it planned to buy energy company )Lufkin Industries ( for $3.3 billion. Shares of Lufkin, which builds and maintains equipment for oil and gas wells, surged in premarket trading. )
Anheuser-Busche InBev's ( proposed $20 billion acquisition of Mexican brewer Grupo Modelo appears to be back on track after the companies, along with )Constellation Brands ( and Crown Imports, said they'd reached an agreement that would settle the Justice Department's objections to the deal. )
In Europe, Portugal's top court invalidated a portion of the government's austerity package on Friday, leaving policymakers scrambling for additional revenue to comply with the terms of the country's international bailout.
Tensions remain high in Korea as the region waits uneasily for Kim Jong Un's next move.
Meanwhile, the Nikkei continued to rally, adding another 2.8%, as investors cheered new stimulus measures from the Bank of Japan. The yen weakened against the U.S. dollar, falling to its lowest level since 2009.