The five possible factors that cause bear markets

While various people can legitimately pick factors that trigger bear markets, or those stock-market environments that result in declines that are long, very significant, or both, there are five factors which great investors center on. These elements of a bear market can be present individually to create falling prices, or they can appear in combination.

The five possible factors that cause bear markets are:

1. Persistent overvaluation.
2. High or rising interest rates or rising inflation that leads to them.
3. Weakness in company earnings. (By the time people know they are in a recession, normally weak earnings have been evident and if high interest rates cause economic weakness, then those rates have been present for a time.)
4. Oil shocks.
5. Wars (but not always).

The first three are, "the big three"; and those who ignored them suffered much greater losses than those who did not.

In each of the following instances: the terrible 1973-1974 market, the 1983 tech boom and bust, the 1987 stock-market crash and the 2000 Internet and technology bubble burst, there was a general disregard for valuations of individual stocks leading up to the collapses. Each collapse was related to this factor. They did not descend upon the markets out of nowhere.

Markets have a habit of discounting good and bad events in advance. This explains why a company's stock may make a big move before its earnings are made public, or why the market may hit the doldrums for three weeks prior to a rise in interest rates. The reason is anticipation. Savvy investors must take into account that reaction to future events may already be reflected in current prices.