Chipzilla took a major dive yesterday morning. Possibly something to do with this thing called an "ex-dividend date"? Of course not! The news was abuzz with downgrades and speculations on loss of market share (complete with a graph showing Chipguana's 3% share catching up to Chipzilla's 97%; amazing what you can do by giving each variable its own Y-axis scale).
By the end of the day, the share price was nearly up to Friday's close, despite the dividend. This morning, it's up significantly. And the "news" is still yesterday's gloom'n'doom.