Investing in Biogen Idec is possible, as the company is publicly traded on the Nasdaq stock exchange under the ticker symbol "BIIB". Individuals interested in purchasing shares can do so through a brokerage account. It is important to conduct thorough research before making any investment decisions. Factors to consider include the company's financial performance, market trends, and any news that may affect its stock price. Additionally, potential investors should review opinions and analyses from financial experts. It may also be beneficial to consult with a financial advisor who can provide personalized advice based on individual investment goals and risk tolerance. Information on Biogen's current market performance and recent news can typically be found on financial news websites or the company's official web page.