Company Performance: Strong earnings and positive financial reports usually drive the stock price up, while losses can cause it to fall.

Industry Trends: The overall health and outlook of the industry that 9941A.TW operates in significantly impacts investor sentiment and the stock price.

Market Sentiment: General investor optimism or pessimism about the stock market can influence the demand for 9941A.TW shares.

Economic Conditions: Macroeconomic factors like interest rates, inflation, and GDP growth can affect the overall investment climate and stock prices.

Global Events: Major global events, such as political instability or economic crises, can create uncertainty and negatively impact the stock market.

Company News: Announcements regarding new products, mergers, acquisitions, or significant contracts can cause stock price fluctuations.

Regulatory Changes: Government regulations and policy changes can impact the company's operations and profitability, affecting the stock price.

Competitive Landscape: The actions of competitors and the company's ability to maintain its market share influence investor confidence.

Dividend Policy: The company's dividend payout ratio can impact investor interest and influence the stock price, especially for income-seeking investors.

Analyst Ratings: Recommendations and price targets from financial analysts can influence investor perception and trading activity.