MongoDB's Q2 results crushed expectations across the board. Here's why the stock still has room to grow despite a lofty valuation. Database software expert MongoDB (MDB 18.34%) reported earnings on Thursday, and the results left analyst expectations far behind. The stock soared more than 18% higher shortly after Friday's opening bell. In most cases, that would be a simple story. Surprising financial strength leads to a triumphant stock jump. The end. But it's more complicated for MongoDB, whose big jump did ...