While this is more anecdotal, I know quite a few financial firms use neural networks for their stock trading algorithms. It's less about whether or not they're

While this is more anecdotal, I know quite a few financial firms use neural networks for their stock trading algorithms. It's less about whether or not they're the right tool, and a matter of using every tool there is to see what happens to work best. Here's a very brief example: http://www.i2r.org/nnstocks.pdf http://www.i2r.org/nnstocks.pdf Also, often times these methods are combined to get even better results. See "ensemble learning: http://en.wikipedia.org/wiki/Ensemble_learning http://en.wikipedia.org/wiki/Ensemble_learning