This research examines the impact of environmental performance on firm value, applying the event study methodology to Newsweek’s ‘Green Rankings’ announcement of 2012 for large US firms. Specifically, it analyzes the impact of the absolute green score and green rank of firms on their performance in the stock market. We found that investors perceive the announcement as positive news, leading to significant positive standardized cumulative abnormal returns (SCARs). After controlling for industry‐ and firm‐specific effects, we observed that firms with repeated green rankings for enhancing environmental performance showed significantly higher SCARs than those with either reduced or unchanged environmental performance. In addition, the environmental impact score measuring environmental damage from a firm's operational activities was found to be the most influential factor in improving the firm's value. Our findings are beneficial to managers in allocating resources to different types of environmental initiative, and provide valuable insight for sustainable environmental investment. Copyright © 2014 John Wiley & Sons, Ltd and ERP Environment

This research investigates the relationship between a firm's environmental efforts and the sustainability of its competitive advantage by analyzing the effects of change in firm environmental performance on the persistence of profitability growth. We find that environmental resources allow a firm with superior financial performance to sustain its competitive advantage, and also complement the efforts of a poorly performing firm to hasten recovery from inferior financial performance. Our findings further indicate that firms attain such positive effects through enhanced profit margins resulting from improved environmental performance. Additionally, we observe that a corporate strategy of improving environmental performance demonstrates management's responsibility to maximize the shareholder wealth of a well‐performing firm. The results provide valuable insights to align environmental activities towards developing unique resources for sustaining the competitive advantage. The study provides an empirical support for creating economic value by benefiting the environment. Copyright © 2016 John Wiley & Sons, Ltd and ERP Environment

Why do foreign firms obtain credit ratings by global rating agencies rather than from their home country's rating agencies even though global raters typically assign lower credit ratings when these foreign firms issue bonds in their home currencies? We find that bonds rated by a global agency decreased yields 11‐14 basis points (bps) when compared to those rated by Japanese rating agencies but, during the 2007‐2009 financial crisis, the yields on these Japanese bonds increased 12‐17 bps, thus fully negating the advantage of obtaining a bond rating from a global rater. This suggests that the reputation of global rating agencies declined during the 2007‐2009 crisis period.

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