Drug Development Progress: Positive clinical trial results typically drive the stock price up; conversely, failed trials or delays can cause it to fall.

Regulatory Approvals: Gaining approval from regulatory bodies like the TFDA for their drugs is crucial and usually leads to a price increase; rejection or delays negatively affect the price.

Market Competition: The presence of competing drugs or new entrants in the same therapeutic area can put downward pressure on the price.

Financial Performance: Revenue, profitability, and cash flow figures reported in quarterly and annual statements influence investor sentiment and therefore, the stock price.

Overall Market Conditions: General economic trends and investor sentiment in the Taiwan stock market impact all stocks, including 4164.TW.

Industry Trends: Changes in the pharmaceutical or biotechnology industries, such as increased focus on certain disease areas, can impact investor perceptions of the company.

Partnerships and Collaborations: Forming strategic alliances with other pharmaceutical companies or research institutions can boost investor confidence and lead to higher stock prices.

Intellectual Property: The strength and protection of the company's patents and intellectual property portfolio are important drivers of long-term value and influence the stock price.