• Correlation is the degree to which multiple risk profiles vary with respect to each other. Correlated risk profiles change in a consistent manner when they are exposed to the same set of incentives. For example, there is a significant correlation between the Dow Jones Industrial Average (DJIA) and the Standard & Poor’s (S&P) 500 because both are affected by the same factors. In contrast, uncorrelated risk profiles (eg, maritime business book and product liability coverage book) respond to very different incentives. The combination of uncorrelated risk profiles results in lower combined volatility.