According to the efficient market hypothesis:

Question

Quizplus · Accepted Answer

The efficient market hypothesis suggests that stock prices reflect all publicly available information and therefore, it is impossible to predict whether a stock is overpriced or underpriced based on publicly available information. This means that a stock's price should reflect its fundamental value, and there should not be any opportunities to make easy profits by buying undervalued stocks or selling overvalued stocks.

According to the Efficient Market Hypothesis