What's Happening?
A new working paper co-authored by Wharton professor Serguei Netessine, titled 'Value of Silence: Determinants and Consequences of Greenhushing,' investigates the financial implications of how U.S. firms communicate their sustainability efforts. The study
introduces the concepts of 'greenhushing' and 'greenwashing.' Greenhushing occurs when firms communicate less about their sustainability work than what is externally observed, while greenwashing involves communicating more than what is observed. The research, which analyzed over 30 million sentences from earnings calls of 3,727 U.S. firms between 2005 and 2021, found that greenhushing is associated with higher subsequent abnormal stock returns. Conversely, greenwashing tends to lead to lower subsequent abnormal stock returns. This suggests that investors place more value on credible, externally observed environmental conduct rather than extensive communication alone. The study is notable for being the first large-scale analysis to combine environmental discussions in earnings calls with external assessments to measure the misalignment between a firm's conduct and its communication.
Why It's Important?
This research is significant for U.S. businesses and investors as it challenges traditional disclosure theory, which posits that greater transparency always leads to higher stock valuations. The findings indicate a shift in investor perception, where credibility derived from actual environmental conduct is rewarded more than mere communication intensity. For companies, this implies that overstating sustainability efforts (greenwashing) can negatively impact stock performance, while quietly exceeding communicated efforts (greenhushing) can lead to positive returns. This dynamic is particularly relevant in a more politicized disclosure environment, where environmental claims can attract scrutiny from critics, regulators, and lawyers. The study also highlights that greenhushing is more prevalent among financially leveraged firms and those in competitive industries, possibly due to a desire to minimize risk or avoid revealing strategic advantages in sustainable practices.
What's Next?
The study suggests that managers should prioritize aligning their environmental communication with their actual conduct, rather than letting communication outpace action. While the research does not advocate for complete silence on ESG matters, it emphasizes the importance of substantiating claims to build credibility. Investors are encouraged to look beyond rhetoric and investigate the gap between a company's stated environmental goals and its real-world actions. This could lead to a greater focus on verifiable environmental performance metrics and a more cautious approach to sustainability claims in corporate reporting. The findings may also influence how companies manage their environmental disclosures, potentially leading to more understated but impactful communication strategies to avoid the pitfalls of greenwashing and capitalize on the benefits of credible conduct.
Beyond the Headlines
The study's insights delve into the evolving landscape of corporate social responsibility and investor relations. The concept of 'greenhushing' reveals a nuanced approach by some firms, where strategic understatement of environmental efforts might be a response to increased skepticism and regulatory pressure surrounding sustainability claims. This could lead to a broader re-evaluation of how corporate transparency is perceived and valued in the market. The research also implicitly highlights the limitations of current reporting frameworks if they do not adequately capture the alignment between communication and conduct. The politicization of ESG further complicates this, pushing some companies to be less vocal to avoid becoming targets. This could foster a more substantive, albeit less publicized, commitment to sustainability, as firms focus on tangible actions that resonate with investors who 'care more about the walk than the talk.'
