The alternative investment market (AIM) has seen rapid growth over its 19 years, and has emerged as the market of choice for smaller, newer companies, both in the UK and abroad. However, it has often had a volatile reputation among investors, who have commonly perceived stock in the AIM as more risky than the main market. In this book, a group of leading financial analysts conduct an extensive empirical study to compare the relative volatility of two UK equity markets run by the London Stock Exchange, over a ten year period. They analyse the comparative risks involved in the alternative investment market, the market of growing companies, and the 'main market', the market for more established companies. This book analyses the volatility of the alternative investment market, using a variety of techniques and approaches. It compares the volatility of stocks in the markets, exploring variables such as size, industry, age and market switches. Using refined methods to focus on the difference between the markets, the authors provide a convincing study to challenge the idea that the alternative investment market is higher risk than the main market.