Want to Grow Your Portfolio to $1 Million? Here’s How Much You Should Invest in the Stock Market

Additionally, you can invest some of it back in dividend stocks that generate a steady stream of cash to pad any retirement income you may have. There are three variables to consider when investing in stocks: your average annual return, how much you invest, and the number of investing years you have left. Assuming a retirement age of 65 years, here's a look at how much you would need to invest based on a 10% annual return.