How can you make money on the stock market? You should ideally trade in the stocks that relate to what you know. For example, if you are a Pharmacist, you should think about trading in pharmaceutical companies, if you fish for a living, you should think about trading in fishing-related stocks. If you invest in what you know, you could be onto a winner as you may already have a bit of insight into the stocks and know how well the businesses behind these stocks are performing. One way you could boost your profits is to re-invest some of stpcks back into the stock market. Reduce the risk by only investing in what you can afford to lose.