Prices within this simulation change based on the supply and demand of the shares (as students buy and sell shares). This is no different than the real stock market. However, the students (investors) in this simulation represent the entire investing population, and this is certainly not the case in the real world. To make this situation more realistic, the instructor of the simulation will act as "the rest of the world's investors". Here is how it works.
Now that you understand the premise of the simulation and how prices will move, it is time to learn how the companies in simCEO will be created.