Systemic risk measures for global financial institutions are provided by the NYU Stern Volatility Lab, run by NYU Stern Professor and Nobel Laureate Robert Engle. They are based on the methodology developed by Acharya, Pedersen, Philippon, and Richardson (2010) and Brownlees and Engle (2010). SRISK measures the capital shortfall of a firm in case of a new financial crisis, defined as a 40% semiannual decline of the world stock market. The model has a single factor (the world stock market). The expected shortfall is based on a 2% daily market decline, extrapolated to a 40% semiannual decline. The measures are all expressed in billion dollars.