2. Why do you think more than half of the firms listed on the 31 largest stock exchanges report environmental data? ExxonMobil seems like an unlikely corporation to take a large step toward increasing environmental reporting. However, the energy giant has started disclosing the value of its “stranded assets.” These assets, including some oil and gas fields, come with a high environmental price and have the potential to be left unused if tougher environmental regulations are passed. While the release of this information may seem contradictory to the company’s mission, this is one of the most recent examples in a growing trend toward more open green reporting. According to the CDP—a group that gathers environmental data for shareholders—of all the firms listed on the 31 largest stock exchanges, more than half report environmental data.