Why ESG Creates Long-Term Value?

12 Οκτ 2026 · @Nikos Stavropoulos

Peer-reviewed research over four decades points to one pattern: companies that manage the ESG issues that matter most to their business tend to perform as well as, or better than, their peers, and carry less risk. The evidence is strongest for three channels: protecting profit margins, lowering the cost of capital, and building stakeholder trust. This article summarises what the studies actually show, and where their limits lie. One caution applies throughout. Most of this evidence is observational. It shows a consistent association between well-managed ESG issues and financial performance. It does not show that any ESG programme automatically raises profit.

What the aggregate evidence shows?

The largest reviews all point the same way.

Roughly 2,200 studies, about 90% non-negative. Friede, Busch and Bassen (2015) pooled the results of earlier academic reviews covering research since the early 1970s. About 90% of the individual studies found a non-negative relationship between ESG and financial performance, and most found a positive one. The result was stable over time and across regions.
Over 1,000 papers from 2015 to 2020. An NYU Stern Center for Sustainable Business and Rockefeller Asset Management meta-analysis (2021) found that ESG measures based on actual performance were linked to better financial results far more often (53% of studies) than measures based only on disclosure (26%). It also reported downside protection during social and economic crises.
Materiality decides the outcome. Khan, Serafeim and Yoon (2016) separated the sustainability issues that are material for each industry from those that are not. Firms rated highly on material issues significantly outperformed low-rated peers. Firms rated highly on immaterial issues did not.

Protecting profit margins

Two studies in Management Science explain how ESG can protect margins rather than only add cost.

Better processes, better long-term results. Eccles, Ioannou and Serafeim (2014) matched 180 US companies: those that adopted sustainability policies early and those that did not. The early adopters more often had board-level responsibility for sustainability, executive pay linked to it, structured stakeholder engagement and stronger non-financial reporting. Over the long term they outperformed their matched peers on both stock-market and accounting measures.
Differentiation and lower risk. Albuquerque, Koskinen and Zhang (2019) model corporate social responsibility as an investment that makes a firm's products more differentiated and supports higher margins. Their tests find that it lowers systematic risk and raises firm value, with stronger effects for more differentiated firms. They address the problem of reverse causation by instrumenting CSR with the political affiliation of the firm's home state.

The NYU Stern review (2021) adds that the link to financial performance often runs through mediating factors: operational efficiency, innovation and risk management. In plain terms, using less energy and material, having fewer incidents and fines, and keeping customers and staff longer are the routes by which ESG reaches the income statement.

Attracting capital

The cleanest evidence on capital is about the cost of a weak environmental record. Chava (2014, Management Science) estimated the cost of capital from analysts' forecasts and loan data. Firms excluded by investors for environmental reasons, such as heavy emissions, hazardous chemicals or climate concerns, had higher expected returns, which means a higher cost of equity. Banks also charged them higher loan interest rates. These firms had lower institutional ownership and fewer banks in their loan syndicates. The effect was not just a disguised measure of default risk. The practical reading: a company with a poor, unmanaged environmental profile pays more to raise money, and a company that manages it well avoids that premium. Khan et al. (2016) add that investors who focus on material issues were rewarded, which is one reason capital providers increasingly ask for decision-useful ESG data.

Building trust

Trust is the hardest channel to measure, and one study gives it a natural test. Lins, Servaes and Tamayo (2017, Journal of Finance) looked at the 2008–2009 financial crisis, when trust in companies and markets collapsed. Firms with high social capital, measured by CSR intensity, earned stock returns about 4 to 7 percentage points higher than low-CSR firms. They also had higher profitability, growth and sales per employee, and raised more debt. The authors interpret this as the value of trust between a firm and its investors and stakeholders. That trust is built in good years through consistent behaviour, and it pays off when general confidence falls. For a business, the same logic applies to customers, employees, lenders and regulators.

Limits of the evidence

A reliable reading of this research needs four caveats.

Rating agencies disagree. Berg, Kölbel and Rigobon (2022) compared six major ESG raters and decomposed the disagreement: 56% came from how raters measure the same category, 38% from which categories they include, and 6% from how they weight them. A single ESG score is therefore a weak basis for decisions.
Disclosure is not performance. The NYU Stern review found positive results far less often for disclosure-only measures (26%) than for performance-based ones (53%). Publishing a policy is not the same as delivering results.
Association is not proof of cause. Better-run firms may simply be better at everything, including ESG. Some studies use instruments or matched samples to reduce this problem, but none removes it completely.
Averages hide variation. Meta-analyses pool different countries, periods and measures. Results differ by industry, and a minority of studies find no effect or a negative one.

What this means in practice

Taken together, the studies support a disciplined approach rather than a broad one.

Start with material issues. Identify the few ESG topics that affect cost, risk and revenue in your specific industry.
Tie each issue to a measurable operating figure. Energy use, waste, incidents, staff turnover and supplier compliance reach the income statement; slogans do not.
Put governance behind it. Board oversight, clear owners and linked incentives distinguished the long-term outperformers in Eccles et al. (2014).
Report results, not only policies. Performance-based evidence is the kind that associates with better financial outcomes.
Treat ratings as inputs. Ask what a rating measures before relying on it.

References

Friede, G., Busch, T. and Bassen, A. (2015). ESG and financial performance: aggregated evidence from more than 2000 empirical studies. Journal of Sustainable Finance & Investment, 5(4), 210–233. Record, DOI 10.1080/20430795.2015.1118917.
NYU Stern Center for Sustainable Business and Rockefeller Asset Management (2021). ESG and financial performance: uncovering the relationship by aggregating evidence from 1,000 plus studies published between 2015 and 2020. Project page.
Khan, M., Serafeim, G. and Yoon, A. (2016). Corporate sustainability: first evidence on materiality. The Accounting Review, 91(6), 1697–1724. SSRN.
Eccles, R., Ioannou, I. and Serafeim, G. (2014). The impact of corporate sustainability on organizational processes and performance. Management Science, 60(11), 2835–2857. LBS record.
Albuquerque, R., Koskinen, Y. and Zhang, C. (2019). Corporate social responsibility and firm risk: theory and empirical evidence. Management Science, 65(10), 4451–4469. ECGI record.
Chava, S. (2014). Environmental externalities and cost of capital. Management Science, 60(9), 2223–2247. Record.
Lins, K., Servaes, H. and Tamayo, A. (2017). Social capital, trust, and firm performance: the value of corporate social responsibility during the financial crisis. Journal of Finance. LBS page.
Berg, F., Kölbel, J. and Rigobon, R. (2022). Aggregate confusion: the divergence of ESG ratings. Review of Finance, 26(6), 1315–1344. SSRN, DOI 10.1093/rof/rfac033.