Explain from a statistical point of view why securities investment loses more and earns less.

At present, domestic securities investment is mainly short-term, and the transaction is subject to handling fees, so the current securities investment is a zero-sum game MINUS handling fees!

Suppose a situation: 10 people invest 10 rounds, and the probability of each person's profit 10% and loss 10% in each round is 50:50. For individuals, the yield of six gains and four losses is 16.23%, and the total income of five gains and five losses is -4.9. According to the probability, it is not worth the loss.

This is the case that 10 people insist on playing until the end, if irrational factors are added.

1. If we exclude those who may lose four times in front and earn six times in the back, they may withdraw from the market after losing four times, then the overall profit will be even less.

2.a-share market is characterized by more ups and less downs. Many people quit without being promoted to the right position, which is equivalent to leaving after making a profit of only 6% or 7%, but when making a loss, they usually lose 10%, so there are fewer people who generally make a profit.

Securities investment is investment in a narrow sense, which refers to the behavior of enterprises or individuals to buy securities in order to obtain income. The analysis methods of securities investment mainly include: basic analysis, technical analysis and evolution analysis, in which the basic analysis is mainly applied to the selection of investment objects, while the technical analysis and evolution analysis are mainly applied to the temporal and spatial judgment of specific investment operations as a useful supplement to improve the effectiveness and reliability of securities investment analysis. They are interrelated and have important differences. The connection is: technical analysis must be supported by basic analysis, so as to avoid seeking fish from the edge of the tree, and to bring technical analysis and basic analysis into the framework of evolutionary analysis, so as to truly improve the ability of sustainable survival! The important difference is that technical analysts believe that the market is right, the stock price trend already contains all useful information, and its basic idea and strategy is to "follow the trend and correct mistakes in time".