The behavior of the stock market is basically the collective behavior of millions or billions of individual humans. Regardless of what complexity class that hap

The behavior of the stock market is basically the collective behavior of millions or billions of individual humans. Regardless of what complexity class that happens to fall into, it's just not possible to predict it with any accuracy. Even predicting in the most general terms the outcomes for individual companies is largely impossible; it's not hard to find evidence that the performance of individual brokers and funds is mostly random, with up years and down years and effectively no overall trends. Good luck!