This study was sponsored by NFCG and attempted to analyse the sustainability initiatives of most valuable firms in the Fortune 500 list and compared them with similar initiatives of Indian firms. The methodology adopted involves analysing information disclosed on their Websites, including annual reports, sustainability reports, policies, and other documents. It also analysed the type of information related to sustainability and business operations were currently disclosed and mapped the information based on industry type and sector, location and profit. In this study Corporate Sustainability Initiatives (CSIs) were defined to include: Any voluntary action taken by the company to ensure reduced impact of their operations on the environment or the society beyond legal compliance; Those initiatives that are embedded in the core or mainstream business or are carried out by an extended arm of the corporate; and All initiatives that depict that the company in general is concerned about the social and environmental aspects along with the economic aspects explicit in its strategic behaviour or planning. An analysis of the reported CSIs for the top 100 firms in both the categories indicated significant overlaps as well as differences.  In the global Fortune 500 sample more than 90 % of these firms had developed green operations, environment conservation as well as donations and sponsorships. This indicates that a strong emphasis is given to Operations and CSR activities. After Operations and part of CSR activities, the most reported initiatives were internal code of conduct, CSR-related(education, community livelihood, volunteering, healthcare, disaster relief and so on), operational efficiency driven (R&D, climate change, renewable energy, health & safety), or voluntary sustainability principles. A study of the CSIs that are mostly reported by top 25 and bottom 25 firms indicates that the same or similar CSIs were the most reported for both groups. However those in the top quartile were more likely to report on a great number of metrics when compared to those in the last quartile. In the top quartile, more than 80 % of the firms reported on all the top 12 CSIs; while at the bottom more than 70% of the firms from the bottom 25 firms reported all the top 12 CSIs.