Description: The author uses a generalized asset risk model to explore C1 risk, drawing heavily from investment theory and pension fund management, applying these to an insurance general account. This article has two parts the first part, contained in this issue of Risk and Reward, describes the basic C1 model itself. The second part, which will be published in the next issue of Risks and Rewards, discusses various implications of the basic C1 model, especially related to managing the company’s investment portfolio.