Different ways to understand the human being have taken economy and psychology to different conceptions of stock market. This article has used the social representation theory to understand this social practice applied by the investors themselves. Starting from the social representations theory and some cognitive studies about decision making, we achieved the group's point of view. We analyzed 94 discussion forums in which 317 investors have been identified. Our conclusion shows that for the examined group the market is formed by people in interaction and prices' oscillation is attributed to the competition among big and small investors.
social representation; stock market; decision-making; social practices
