The average company lists 11.8 sustainability priorities (Jay et al., 2025). The evidence says the right number is closer to three. Companies that narrow their focus outperform those that don't, and the performance gap isn't marginal.

The Proliferation Problem

The median C-suite now monitors 100 sustainability-related KPIs, up 30% since 2018 (McKinsey Global Institute, 2025). When BCG examined over 500 sustainability initiatives across global companies, only 1 in 5 showed any meaningful connection to business value. Only 1 in 15 was changing the basis of competition (BCG, 2022).

Sustainability teams face over 600 reporting standards globally (KPMG, 2022), rating agencies whose scores correlate at just 0.54 with each other (Berg et al., 2022), and internal stakeholders who each want something different. Covering everything feels like the rational response. But McKinsey's analysis of 18 major environmental and societal issues found that a typical corporation can make a real difference on just one to three of them (McKinsey Global Institute, 2025). The rest are areas where the company lacks distinctive capability.

A compliance-driven, checklist approach won't help you identify which few those are.

The Case for Concentration

The financial case comes down to materiality: the sustainability factors that are financially significant to a specific business in a specific sector.

Harvard Business School's foundational study showed this directly. Firms performing well on material sustainability issues significantly outperformed their peers. Firms performing well on immaterial issues didn't (Khan et al., 2016). Russell Investments quantified the gap: material ESG issues generated alpha of 1.19%, while immaterial issues generated 0.30% (Russell Investments, 2018). Two-thirds of securities had less than 25% of their sustainability data classified as material to their industry. Most of what fills a broad ESG score is noise for any given company.

The market responds in real time. Serafeim and Yoon analysed over 111,000 firm-day observations and found that financially material ESG news generated an average stock price reaction of +60 basis points. Non-material ESG news produced no reaction (Serafeim & Yoon, 2022). MSCI's 13-year study confirmed that industry-specific weighting of ESG issues outperformed both equal-weighted and statistically optimised approaches (Giese & Shah / MSCI, 2024). What counts as material varies dramatically by sector. The companies that calibrate priorities against what their sector's investors and rating agencies consistently reward are the ones that pull ahead.

Ioannou and Serafeim drew the strategic distinction. They were the first to empirically separate strategic sustainability practices from common ones. Strategic practices are differentiated and focused on high-value issues. Common practices are compliance-oriented and converge to an industry baseline. Only strategic practices are associated with return on capital and forward valuation multiples (Ioannou & Serafeim, 2021). NYU Stern's meta-analysis reinforced this: only 26% of studies focused on ESG disclosure alone found a positive correlation with financial performance, compared to 53% for studies examining actual ESG performance (Atz et al., 2022). Reporting on everything does less than performing well on a few things.

The underlying mechanism is telling. Ahn, Patatoukas, and Skiadopoulos found that companies improving their material ESG scores are the same companies with strong operational fundamentals (Ahn et al., 2024). Getting material sustainability right reflects running the core business well on the issues that matter most. As Serafeim put it: it isn't realistic to expect that every organisation investing in sustainability efforts will experience positive results (Serafeim, 2022). The value concentrates in firms that identify and act on specific factors relevant to their competitive position.

Why Companies Still Spread Too Thin

If the evidence is this clear, why do so many companies still try to cover everything?

Three structural pressures. Sustainability teams are under-resourced for strategic work: over 60% of firms have one to five full-time sustainability employees, with the biggest talent gaps in financial modelling, change management, and data analysis (Conference Board / Tonello, 2025). Boards want to challenge breadth but often can't. Only 29% of directors feel knowledgeable enough to monitor sustainability execution (BCG / INSEAD / Heidrick & Struggles, 2023). And the landscape itself encourages dispersion through hundreds of frameworks, each demanding attention on different topics.

The result is counterintuitive but consistent: companies with more sustainability initiatives can perform worse on the metrics investors reward. Resources spread across dozens of topics produce shallow engagement on each one.

What Concentration Looks Like

BCG's Total Societal Impact research quantified the payoff of focus by industry. Top performers on sector-relevant material topics enjoyed valuation premiums of 3% to 19% over median performers (BCG, 2017). The specific issues differed: governance and corruption prevention in oil and gas, product sustainability in consumer packaged goods, data security in banking. The principle of concentration held across all of them.

Jay, Isaacs, and Nguyen offer a practical test for deciding where to concentrate. Evaluate each sustainability issue through four lenses: business value, stakeholder influence, science and technology, and purpose. Issues that appear in all four deserve the most significant resource allocation. Their research found this approach reduces priorities from the typical 11.8 to approximately three core areas (Jay et al., 2025).

Three areas pursued with full commitment will outperform twelve addressed superficially.

The Question Worth Answering

Every sustainability team faces some version of the same decision: cover more ground, or go deeper on fewer things.

If your sustainability strategy addresses 15 issues at the same depth, how many of them is it competitive on?

References

• Jay, J., Isaacs, K. & Nguyen, H.L. (2025). "Getting Strategic About Sustainability." Harvard Business Review, January-February 2025.
• McKinsey Global Institute (2025). "Beyond ESG: From Checklists to Capabilities."
• Conference Board / Tonello, M. (2025). "Best Practices for Corporate Sustainability Teams." Harvard Law School Forum on Corporate Governance.
• BCG / INSEAD / Heidrick & Struggles (2023). "The Role of the Board in the Sustainability Era."
• Giese, G. & Shah, D. (2024). "ESG Ratings: How the Weighting Scheme Affected Performance." MSCI.
• Ahn, Y., Patatoukas, P.N. & Skiadopoulos, G. (2024). "Material ESG Alpha: A Fundamentals-Based Perspective." Harvard Law School Forum on Corporate Governance.
• Atz, U., Van Holt, T., Liu, Z.Z. & Bruno, C. (2022). "Does Sustainability Generate Better Financial Performance?" Journal of Sustainable Finance & Investment, 13(1).
• Serafeim, G. & Yoon, A. (2022). "Which Corporate ESG News Does the Market React To?" Financial Analysts Journal, 78(1).
• BCG (2022). "The Strategic Race to Sustainability."
• Serafeim, G. (2022). "ESG: Hyperboles and Reality." Harvard Business School Working Paper No. 22-031.
• Berg, F., Kölbel, J.F. & Rigobon, R. (2022). "Aggregate Confusion: The Divergence of ESG Ratings." Review of Finance, 26(6), 1315-1344.
• KPMG (2022). "Survey of Sustainability Reporting 2022."
• Ioannou, I. & Serafeim, G. (2021). "Corporate Sustainability: A Strategy?" Harvard Business School Working Paper No. 19-065.
• Russell Investments / Steinbarth, E. & Bennett, S. (2018). "Materiality Matters: Targeting the ESG Issues that Impact Performance." Harvard Law School Forum on Corporate Governance.
• BCG (2017). "Total Societal Impact: A New Lens for Strategy."
• Khan, M., Serafeim, G. & Yoon, A. (2016). "Corporate Sustainability: First Evidence on Materiality." The Accounting Review, 91(6), 1697-1724.