Technology

To a large extent it is, the major difference being that when people take actions based of these signs, it influences which way the chart goes next, unlike the planets, which do not care the slightest what people do based on their actions. Thus you can end up making a lot of money if your actions are 1) correctly anticipating subsequent actions by other people and 2) sufficiently in advance of other actions. Which makes inside trading and pump-and-dump schemes great ways to get filthy rich, if you find yourself in a position to be able to pull that off. Or if you are lucky. Or if you have made a name for yourself and everyone else just assume you know what you are doing and follows (Warren Buffet comes to mind).