Price fluctuation is inevitable, because even if everyone is rational, they will objectively evaluate the value of a stock according to the fundamental financial data and the development of the company, and the price will still fluctuate for two reasons:

1, rational evaluation does not mean that the evaluation methods are the same. There will be many valuation methods, and different people will adopt different valuation methods, resulting in different valuations, so the recognized prices will be different.

2, the company's business changes, the company's operating conditions will not remain unchanged, then correspondingly, the value of the stock will always change.