what are the main factors that determines the volatile nature of share market?

Question

i need basically the factors and the specification that why these factors effect the market and on what grounds and which one is the worst factor.

Answer 1

The principal causes of volatility in markets (stock, commodities, forex, futures, etc.) is human emotion. Greed and fear are the primary factors that affect supply and demand in the markets, which, in turn, affect pricing. Human behavior in the face of available information about the subject being traded results in different perceptions (as the previous answerer indicated) of value on the part of market participants. These varying perceptions, and the hourly, daily, weekly, etc imbalances in supply and demand are seen on the charted prices of the traded items.

Answer 2

New news keeps appearing and changes people's perception of the future earnings of the company or the possibility that it will be acquired or go bust.