Industry Trends: The overall performance and outlook of the petrochemical industry influences investor sentiment and demand for Formosa Plastics stocks.

Company Performance: Formosa Plastics' financial health, including revenue, profit margins, and debt levels, is a key driver of its stock price.

Economic Conditions: Economic growth or recessionary periods can impact demand for petrochemical products, affecting Formosa Plastics' earnings.

Raw Material Prices: Fluctuations in the cost of raw materials like crude oil can significantly impact Formosa Plastics' profitability.

Regulatory Environment: Government regulations related to environmental protection and safety can affect Formosa Plastics' operating costs.

Market Sentiment: General investor confidence and risk appetite can influence the trading volume and price of Formosa Plastics stocks.

Dividend Policy: Formosa Plastics' dividend payout ratio and dividend yield can attract or deter investors, impacting stock price.

Global Events: Geopolitical events, trade wars, and natural disasters can disrupt supply chains and affect Formosa Plastics' business.

Competitive Landscape: The actions of Formosa Plastics' competitors, such as pricing strategies and capacity expansions, can influence its market share.

Technological Advancements: New technologies in the petrochemical industry can affect Formosa Plastics' competitiveness and future growth prospects.