I'd go back to 2010 for sure. I dont think you would have to wait long to make a lot of money. You could trade your way to millions just knowing the bull and bear cycles and then invest that money in all kinds of stocks to keep you going. I wouldn't need a billion $ to be satisfied. 50-100 mill would be more than enough for me. To be honest even with 10 million 10 years ago Im pretty sure id be able to live very comfortably the rest of my life, even without having knowledge on how the stock market was going to do. Even just normal conservative investing strategies can turn 10 million into a lot more over time.