Stock futures fall on Greece concerns

The S&P has rallied for five straight weeks on better-than-expected U.S. economic data, punctuated by Friday's solid employment report.

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Hasbro Inc fell 5.5 percent to $33.89 in light premarket trade after the maker of Nerf foam toys and Monopoly board games reported a fourth-quarter profit just above analysts' lowered expectations.

Humana Inc posted a big rise in fourth-quarter profit, helped by higher membership in its Medicare plans for the elderly. The health insurer also slightly lifted its full-year earnings forecast.

Other companies expected to post earnings include Yum Brands Inc , Pioneer Natural Resources Co , Dun and Bradstreet Corp and Anadarko Petroleum Corp .

Through Friday, 283 companies in the S&P 500 had reported results, with 60 percent posting earnings that topped Wall Street expectations, a lower percentage than in recent quarters at this point of the reporting season.

Boeing Co has discovered a problem related to the aft fuselage of its 787 Dreamliner planes and is making repairs that will not affect production, the company said on Sunday.

NYSE Euronext plans to focus on smaller deals and returning capital to shareholders after a merger with Deutsche Boerse failed, the company's chief executive said on Friday.

Rockwood Holdings Inc plans to double its lithium production capacity.

Asian shares rose on the U.S. jobs data bolstered investors' risk appetite.

(Reporting By Chuck Mikolajczak; editing by Jeffrey Benkoe)