Problem
For decades, investors have asked whether putting money into sustainable companies produces better or worse returns. Dozens of studies have reached opposite conclusions, and the scores that specialist agencies give companies based on their environmental, social and governance commitments have made things worse. Different agencies rating the same company often reach completely different conclusions. But the deeper problem is this: most research has focused on what companies say about sustainability, not what they do. Investors have been making decisions based on words. We set out to find out whether actions told a different story.
Science
We built and analysed the GOLDEN Sustainability Dataset - the largest structured dataset of its kind. It contains approximately one million sustainability initiatives covering three decades of corporate activity. We used AI tools to read and classify each initiative automatically, achieving 98 per cent accuracy. Each initiative was sorted into one of three categories: Advocacy (donations, volunteering and community communications), Preparation (internal training, measurement systems and rule-setting) and Transformation (product innovation, supply chain redesign and structural change to the business). We then built investment portfolios from 983 North American and European companies, ranked by how much of their sustainability activity fell into each category, and tracked how those portfolios performed over 13 years.
Outcome
What a company does with sustainability drives its financial performance. What it says does not. Companies that used sustainability to change how they operate returned 40.58 % more than the market over 13 years. Companies that focused on donations and communications did worse than those that kept such activity low. ESG scores pointed investors in the wrong direction entirely and they rewarded preparation activity most, the very category that showed no link to stronger returns or sales growth. Tracking what companies actually do predicted returns that no existing model could explain on its own.
Change
Financial institutions now have a tool that works where ESG scores do not. Asset managers can build portfolios tracking what companies are doing rather than what ESG scores say about them. Commercial banks can tie loan terms to the same signals, directing money toward companies that are changing how they operate. Private equity firms can push the companies they own toward transformation directly. For policymakers, the evidence supports rewarding companies that invest in innovation and structural change and removing support from those that focus on donations and communications. The question for every financial institution is no longer whether a company has a sustainability policy. It's whether that policy is changing the way the business works.