Company Performance: The financial health and operational efficiency of the company, including revenue, profit margins, and debt levels, directly impacts investor confidence and stock price.

Market Sentiment: General investor attitude towards the stock market and specific industry trends influence buying and selling decisions, impacting stock prices.

Economic Conditions: Macroeconomic factors like interest rates, inflation, and GDP growth affect corporate profitability and investor risk appetite, thus influencing stock valuations.

Industry Trends: Developments and innovations within the company's industry, including competition and regulatory changes, can significantly alter the stock's perceived value.

News and Events: Company-specific news such as earnings reports, product launches, and management changes, as well as broader economic or political events, can trigger immediate price fluctuations.

Global Economy: Economic activity of US or China will affect most of Korea's export driven company, which includes the company of 004890.KO.