On April 3, Bloomberg LP analyst Rina Levy explained that companies that report sustainability data using Global Reporting Initiative (GRI) guidelines have better stock performance than the benchmark for global companies in the MSCI world index. Addressing a GRI webinar on data assurance in sustainability, Levy said that management of sustainability issues means better management of risk. In the U.S., over 53 percent of Standard & Poor’s (S&P’s) 500 companies report on sustainability. Worldwide, 95 percent of the 250 largest companies generate sustainability reports; 80 percent of these reports use the GRI standards.