Behavioral economics suggests that psychological influences and biases influence the financial behavior of investors and financial professionals. Moreover, influences and biases can be a source of explanation for all kinds of market anomalies, and especially market anomalies in the stock market, such as a serious rise or fall in the stock price. Within behavioral finance, it is assumed that financial participants are not perfectly rational and self-controlled, but are psychologically influenced with somewhat normal and self-controlled tendencies. Behavioral finance explains many reactions in financial markets that seem to contradict conventional theory and make an important contribution to avoiding serious mistakes in deciding good investment strategies. Also, using these methods can contribute to performance improvement. The consumer is faced with decision-making on a daily basis, both of minor importance and of importance for his own financial stability. Decision-making is influenced by all sorts of environmental factors without the consumer being aware of it. As a result, several theories have emerged by which experts explain the basis on which people, including investors/ consumers, make decisions and what factors guide them. In everyday life, one should also take into account trends or the current fashion that also affects the movement of stock prices. The market requires investors to spend a significant part of their free time in conversation, in search of all available information in order to react in a timely manner in the market and act in their favor.