U.S. stocks are poised for more upward momentum even as uncertainty over oil prices and Greek debt negotiations keeps the market on tenterhooks, analysts say.

General Motors Co (GM.N) said Thursday it will build a compact electric car at an assembly plant near Detroit, where it will invest $200 million for the project.

Doctors and health professionals from both sides of the Pacific on Thursday said they worry that a major regional trade pact could result in higher medical costs and urged a full assessment of the pact's impact on healthcare.

Italy's economy stagnated at the end of last year, marking the 14th consecutive quarter without any growth as an increase in exports was offset by weak domestic demand, data showed on Friday.

Euro zone economic growth accelerated unexpectedly in the final quarter of 2014 as the bloc's largest member, Germany, expanded at more than twice the expected rate.

Oil rose above $60 a barrel on Friday for the first time this year, bringing its gain this week to almost 4 percent, supported by signs that deeper industry spending cuts may curb excess supply.

Activist Investor Carl Icahn thinks Apple Inc is already worth over $1 trillion but others on Wall St. think it will take a few more years for the iPhone maker's stock value to get there.

Greece will make every effort to reach an agreement with its euro zone partners at Monday's meeting of euro zone finance ministers on how to transition to a new support program, its government spokesman said on Friday.

A forecast-smashing growth reading from Germany sent stock markets higher and low-rated bond yields lower on Friday, putting global equities on track for a second straight week of gains.

Reaching a deal on Greece's emergency financing will be possible at the technical level, but a political agreement with the country's new leftist-led government will be "very difficult" the chairman of euro zone finance ministers said on Thursday.