Wharton Professor Jeremy Siegel says the Dow Jones industrial average is heading to 18,000, and maybe higher.
The automaker's stock added another 15 percent on Tuesday and Wednesday alone, and a massive options bet suggests that the party isn't over.
On Thursday, Yellen could tell the market something about the Fed's next move.
Analysts are really, really optimistic about Q3 and Q4. Here's the sad reason why.