# ESG investing shifts pollution to suppliers Companies under ESG pressure transfer emissions to their supply chain - **Source:** [Strategic Management Journal](https://onlinelibrary.wiley.com/journal/10970266) - **Published:** 2026-08-04 - **Topic:** [Finance](https://brifing.si/c/finance) - **Original article:** - **On Brifing:** https://brifing.si/s/95fbf3fd-0855-4c3d-8b8b-80cc489835b2 ## The unintended consequence of ESG investing While companies under ESG investor pressure appear to reduce direct emissions, they often shift this pollution to suppliers. Research analyzing global firm data from 2006-2019 shows total emissions remain unchanged. This reflects corporate decoupling strategies. When supply chain impacts are ignored, ESG performance metrics can be misleading. The phenomenon highlights limitations in current sustainability assessments. ## The critical role of supplier oversight The study reveals that emission shifting decreases when ESG investors have direct oversight of suppliers. Investors providing access to green technologies show similar effects. In some cases, supplier emissions actually decreased. These findings emphasize the need for sustainability efforts to encompass entire supply chains. Comprehensive monitoring mechanisms prove essential for genuine impact. ## Findings supported by global data The research used investor-level acquisitions as quasi-exogenous shocks to test hypotheses. Additional firm-supplier sample analysis yielded consistent results. The 13-year dataset provides comprehensive insights into corporate behavior under ESG pressure. Results offer a new perspective for evaluating sustainability policy effectiveness. Methodological rigor strengthens the study's conclusions. ## Sophisticated form of corporate decoupling Companies respond to institutional pressures from ESG investors by outsourcing pollution. This strategy creates an appearance of sustainability without real impact. Researchers term this 'sophisticated corporate decoupling.' The practice appears more prevalent in sectors with complex supply chains. Such behavior undermines genuine sustainability progress. ## Green technology access makes a difference The study shows ESG investors facilitating green technology access reduce pollution shifting. In some cases, they achieve net decreases in supplier emissions. This finding reinforces the importance of sustainable technology investments. It suggests concrete pathways for investors to create positive change. Technology transfer emerges as a key leverage point. ## Variations in investor approaches Significant differences exist among ESG investors. Those with supplier oversight capabilities demonstrate distinct impacts. Activist investors appear particularly effective. This diversity highlights that not all ESG investments are equal. Investment strategies and engagement methods substantially influence outcomes. ## Sectoral variations in effects Research results vary significantly across industries. Emission shifting is most pronounced in sectors with extensive supply chains. Energy and manufacturing companies show higher propensity for this behavior. In contrast, technology and service sectors exhibit more limited effects. These patterns inform targeted policy interventions. ## Implications for sustainability policies Findings reveal shortcomings in current ESG assessment methodologies. Focusing solely on company-level emissions proves insufficient. Comprehensive supply chain impacts must be incorporated. This necessitates new regulations for investors and policymakers. The research calls for more holistic sustainability metrics and reporting standards. ## Sources covering this story - https://sms.onlinelibrary.wiley.com/doi/10.1002/smj.70115?af=R — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._