In this book, we presented the four systemic risk measures developed in the financial literature. These measures are expected marginal loss (Marginal Expected Shortfall: MES) and the expected systemic loss (Systemic Expected Shortfall: SES), the measurement of systemic risk (SRISK) and Delta Conditional Value-at-Risk ( CoVaR). From the theoretical development of these models, we presented a synthesis of specific features of each measure. This synthesis has enabled us to develop a common framework to measure systemic risk. We showed theoretically, most of the variability of these three systemic measures can be obtained by measuring the market risk and the company's characteristics.