Take a look at some of Monday's morning movers:
Nokia - Samsung Electronics is denying reports that it may be interested in acquiring Nokia, according to Reuters. Multiple stories last week speculated on the possibility of Nokia becoming a takeover target.
Time Warner - The stock has been upgraded to "market perform" from "underperform" at Bernstein, which says Time Warner's outlook is slightly less pessimistic and that the shares are a good value right now.
Centene - The health insurer is forecasting a second quarter loss and has cut its outlook for the full year. Higher costs and claims in Texas and Kentucky are among the reasons cited by the company.
Comcast - The parent of NBCUniversal, which in turn is the parent of CNBC and CNBC.com, is categorically denying a New York Times report that it was mulling a bid for British Sky Broadcasting, which is 39 percent owned by News Corp..
Citigroup - The bank will not seek to return capital to its shareholders this year when it resubmits its capital plan to the U.S. Federal Reserve today. The Fed's stress test results, released earlier this year, allowed many banks to raise dividends and buy back shares, but Citi was not among them.
Apple - Apple's annual Worldwide Developers Conference gets underway today in San Francisco. Among other things, Apple is expected to unveil details of new operating system iOS6.
Airline stocks like Delta Air Lines, United Continental Holdings, Southwest Airlines, U.S. Airways, and JetBlue Airways could move today, after the International Air Transport Association left its industry profit forecast unchanged for 2012.
AMR - CEO Tom Horton saying the American Airlines parent is not concentrating on any potential merger right now but rather focusing on its restructuring.
AIRLINE STOCKS
United Healthcare - The health insurer is planning to keep key consumer provisions of President Obama's health care reform law in place, whether or not the Supreme Court strikes it down when it makes a ruling expected sometime this month.
Facebook - A comScore survey shows the social network's growth rate slowing in April to just 5 percent year-over-year, the slowest since comScore began keeping track in 2008.
IntegraMed - The health care management company will go private, as Sagard Capital Partners agrees to buy it for $14.05 a share in cash.
TripAdvisor - The travel web site operator's stock has been upgraded to "overweight" from "neutral" at Piper Jaffray. Piper says both near and long term fundamentals are favorable, as ad revenues grow and user engagement increases.
—By CNBC’s Peter Schacknow
Questions? Comments? Email us at