In fact, it is a good thing to have some special skills or a deep understanding of a certain aspect, but each enterprise person or person in charge looks at things from a different angle. If you think that "having four years of experience in stock trading" is related to your major or what you have learned, or what you need to do, you can add it. If not, you can change it a little. Four years of stock trading should know many details, such as which stocks you like to chase, new energy and so on, and express the specific development of an industry in your own language.