Well, I'm only on mobile. But the problem with stock prices is often that you don't have good data, unless you are working for the big four or whatever. And eve

Well, I'm only on mobile. But the problem with stock prices is often that you don't have good data, unless you are working for the big four or whatever. And even then, they are apparently still working on integrating external data in real time. Imagine having the whole Twitter stream, maybe categorized by some network in an automatic way. Also prequential evaluation.