Computer algorithm-led hedge funds produced stellar returns last year, beating most gut-driven human money managers.
Despite drug pricing concerns that weighed on Gilead Sciences' stock toward the end of December, the drugmaker started the year by raising prices.
Bitstamp said it had suffered a security lapse, but others are questioning that explanation.
Automakers reported strong December U.S. sales, boosted by falling gas prices, but analysts cautioned that growth would slow this year.
San Francisco Fed President John Williams said that "turbulence" is likely if the Federal Reserve tightens while others increase stimulus.
Health care and biotech companies are some of the leading stocks with the highest average gains for January.
Stocks dropped on Monday, with energy companies leading losses as the price of oil fell to its lowest since 2009.
The price of oil started the first full week of 2015 the way it ended the previous year: heading downwards.
Companies making headlines ahead the bell Monday:
The economic effects of European Central Bank bond buying would be "negligible," Southwest Securities' Mark Grant tells CNBC.
Wall Street looked set for a weaker open on Monday, with U.S. stock futures tracking declines in Europe and pressured by the fall in oil prices.
The euro fell to near a nine-year low, hit by concerns that Greek elections will result in a government that will aim to cancel austerity measures.
Transportation ministry announces harsh measures against everyone who allowed AirAsia Flight 8501 to take off without proper permits.
Strategist James Paulsen says the S&P 500 could be up about 10 percent or down 10 percent this year.
Microsoft is stepping up its efforts to capture the rapidly-growing emerging market consumer with a new, Internet-connected phone.
The incoming chairman of the Senate Commerce, Science and Transportation Committee says raising fuel taxes is among the options under consideration.
A single Bluefin tuna has sold for $37,500 in the first fish auction of the year this weekend in Toyko, Japan, according to media reports.
Iranian President Hassan Rouhani has tabled the possibility of a referendum on the country's controversial nuclear negotiations.
At the end of 2014, borrowing to buy stocks reached its highest level relative to the size of the U.S. economy since 1929.
The world's largest asset manager, BlackRock, told clients Monday to "resist the urge to exit" as stock market fluctuations increase in 2015.