Here are today's top news headlines from Check back throughout the day as this list is updated, and follow us on Twitter at TMFBreaking.

Enanta Pharmaceuticals,, ImmunoGen, and Prana Biotechnology Ltd Could Be Big Movers in Healthcare Today

Stock Market Today: Futures Tumble as Mattel and National Oilwell Varco Post Earnings

Twitter Buys 900 IBM Patents

MasterCard Inc. Earnings Up 16% Excluding Special Item

Yahoo! Email Usernames and Passwords Stolen

Merck Joins Companies Ending Chimpanzee Research

Americans Aren't Making More, but They're Spending More

Chevron's Terrible Quarter Shows Weakness for Big Oil

Study: Gas Prices to Remain Stable for 2 Decades

Chipotle Mexican Grill's Scorching-Hot Quarter

Milestone Payments Push ImmunoGen to a Q2 Profit

Cameco Selling Interest in Ontario Nuclear Facility

Chicago Employment Shrinks for First Time in 9 Months

Sales and Office Workers Snag 2.3% Compensation Gains for 2013

Increased Generic Competition Pushes AbbVie's Q4 Profit Noticeably Lower

Dominion Resources Earnings Beat on Top Line, Miss on Bottom

Sanofi Sues Eli Lilly, Alleging Insulin Patent Infringement

Gasoline Prices Fell in Jan. as Weather Kept Drivers Home

Keystone XL Oil Pipeline Clears Significant Hurdle