10 Key Economic Concept You Must Know 1. Bear market The principle of a bear market is simple enough. Essentially, it represents a negative or pessimistic outlook on a stock market’s performance, often with such markets falling into a downfall spiral, where prices continue to drop. As a result of a bear market, selling of stocks tends to increase. Additionally, investors expect, and may well receive, increased losses from their investments. 2. Bull market A bull market represents a much more positive outlook on a stock market’s performance compared to a bear market. In a bull market, stock prices either have or are expected to increase. and eight more in video...