Recent findings from the OECD’s “Global Corporate Sustainability Report 2025” indicate that the global sustainability disclosure landscape is consolidating rapidly. Analysts and investment teams should be aware that three standards; GRI, ISSB, and ESRS, are taking centre stage. This marks a significant shift from the fragmented patchwork of frameworks seen in previous years, and indicates an improvement in consistency in sustainability reporting worldwide.
More than 90% of global market capitalisation now covers some form of sustainability reporting, with the energy sector leading this market engagement through widespread adoption of these standards. Oversight is also strengthening, with boards of many listed companies increasingly involved in sustainability risk management and incentive structures.
However, the value for investors goes well beyond box-ticking. The OECD highlights that across regions and sectors, the push for interoperability aims to reduce compliance costs for multinational companies and improve the reliability and comparability of reported data. Analysts should expect to see continued progress toward harmonisation, which will help reduce reporting fatigue and the risk of data inconsistency in cross-border analysis.
Interoperability carries further practical implications. High-quality, assured sustainability data is becoming a baseline for effective stewardship and better investment decisions. While more companies are obtaining assurance on their disclosures, the OECD notes that only about 17% of global sustainability disclosures receive the highest level of “reasonable assurance”. This suggests room for improvement in audit and verification practices.
Looking ahead, the consolidation of disclosure standards could benefit both investors and companies. Teams that navigate these standards effectively will gather credible, actionable intelligence and move beyond compliance toward deeper, forward-looking sustainability analysis. The ongoing evolution of standards is an area to monitor closely, as it may have far-reaching impacts on comparative analysis and investment strategies in the years to come.
For investment teams navigating these evolving sustainability disclosure standards and seeking to streamline engagement and reporting processes, SI Engage offers a purpose-built platform to help plan, track, and report engagements efficiently.
Contact us to learn how we can support your sustainability journey.
