Investor Sentiment: Overall market optimism or pessimism towards pharmaceutical stocks influences demand.

Financial Performance: ALK-Abelló's revenue, profit margins, and earnings per share directly impact stock valuation.

Regulatory Approvals: Positive regulatory decisions for new or existing products drive price increases.

Clinical Trial Results: Successful clinical trials create investor confidence and higher stock prices.

Competition: The presence and strength of competing allergy treatment products affect ALK's market share.

Economic Conditions: Economic downturns can impact healthcare spending and affect demand for ALK's products.

Currency Fluctuations: Changes in currency exchange rates can affect ALK's revenue and profitability.

Patent Protection: The strength and duration of ALK's patent portfolio influence its competitive advantage.

Mergers & Acquisitions: Potential or actual M&A activity involving ALK can significantly alter the stock price.

Analyst Ratings: Recommendations from financial analysts influence investor decisions and stock movement.