Company Performance: Revenue growth, profitability, and financial health all significantly impact investor confidence and the stock price.

Broader Market Trends: General market sentiment, economic outlook, and global events influence investor appetite for risk and thus, stock prices.

Sector-Specific News: News and trends specific to the biotechnology industry, including regulatory approvals, clinical trial results, and competitor activities, drive valuations.

Investor Sentiment: Positive or negative sentiment expressed in news, social media, and analyst reports affect buying and selling pressure.

Interest Rates: Changes in interest rates can impact borrowing costs for the company and affect overall investment attractiveness of stocks.

Inflation: High inflation can decrease consumer spending and increase company expenses, negatively affecting profitability and stock price.

Currency Exchange Rates: Fluctuations in currency exchange rates, particularly GBP, impact earnings and competitiveness for companies with international operations.

Supply and Demand: The basic principles of supply and demand influence stock price; higher demand drives prices up, while increased supply pushes them down.

Dividends: Dividend payouts and announcements can attract investors and influence the stock price, especially for income-seeking investors.