“Sigma consists of three different phases of growth. It starts with a modest and shallow growth. After a certain point, growth accelerates rapidly. Then growth starts to decline and the cycle reaches a mature stage, where there is little to no growth. In short, the pattern is this sequence of three different speeds of growth: slow-fast-slow. Growth in earnings and sales also follow that same predictable pattern. The sales of products, for example, will eventually slow down and reach a plateau after potential buyers have bought what they wanted. The key to making money in the financial markets with Sigma is to find companies that are just beginning to experience rapid growth.”
http://sovereign-investor.com/2013/08/08/cash-in-on-the-secret-sigma-strategy/