Once the industry group is chosen, an investor would need to narrow the list of companies before proceeding to a more detailed analysis. Investors are usually interested in finding the leaders and the innovators within a group. The first task is to identify the current business and competitive environment within a group as well as the future trends. How do the companies rank according to market share, product position, and competitive advantage? Who is the current leader and how will changes within the sector affect the current balance of power? What are the barriers to entry? Success depends on having an edge, be it marketing, technology, market share or innovation. A comparative analysis of the competition within a sector will help identify those companies with an edge, and those most likely to keep it.