ESG Corporate Governance: Why It Drives Returns (2026)

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1. What Is ESG Corporate Governance?

ESG corporate governance refers to the systems, principles, and processes by which companies are directed and controlled. It is one of the three pillars of ESG investing — alongside Environmental and Social factors — and focuses on how companies are managed in the interests of shareholders and other stakeholders.

Key aspects of corporate governance include:

• Board diversity and independence — ensuring boards have a mix of skills, backgrounds, and independent voices to reduce conflicts of interest
• Executive compensation — aligning management incentives with long‑term shareholder value creation
• Shareholder rights — protecting investors’ ability to vote on key issues, access proxy statements, and hold management accountable
• Transparency and disclosure — providing timely, accurate, and comprehensive financial and non‑financial reporting
• Risk oversight — establishing board‑level committees to monitor financial, operational, and reputational risks

According to a 2025 PwC survey, 78% of institutional investors now consider ESG factors in their investment decisions, and governance is consistently cited as the most material ESG factor for long‑term performance. Companies with strong governance practices are not only better positioned to manage risks — they also tend to generate superior returns over time.

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2. Why Corporate Governance Matters for Investment Returns

Corporate governance is not just a matter of ethics or compliance — it has a direct and measurable impact on shareholder returns. Studies spanning multiple decades have consistently shown that companies with strong governance practices outperform their peers.

The Evidence — Studies on Governance and Performance

A landmark 2018 study by Hermes Investment Management examined ESG factors in the MSCI World Index from 2008 to 2018. The study found that good governance provided the biggest uplift in shareholder value — delivering an additional 24 basis points per month in returns compared to companies with poor governance. By contrast, poor social practices led to underperformance of 15 basis points per month, while environmental factors showed mixed results depending on the sector.

More recent research reinforces these findings. A 2022 meta‑analysis by NYU Stern School of Business reviewed over 1,000 studies on ESG and financial performance. It concluded that ESG integration improves returns in 58% of studies, and corporate governance is one of the most consistently positive factors across all regions and asset classes. A 2024 study by MSCI found that companies with strong governance scores (top quintile) outperformed their bottom‑quintile peers by an average of 15‑20% over a 10‑year period.

The Hermes Study — 24 Basis Points Outperformance

The Hermes study, which analysed data from the MSCI World Index over a decade, remains one of the most cited pieces of research on ESG performance. Its key finding — that governance is the strongest driver of ESG‑related outperformance — has shaped the way asset managers think about stewardship and engagement. The study also highlighted that governance factors such as board independence, executive compensation alignment, and shareholder rights were the most significant contributors to excess returns.

Governance vs Social vs Environmental Factors

While all three ESG pillars matter, governance consistently shows the strongest and most consistent link to financial performance. Environmental factors tend to be sector‑specific — for example, carbon emissions matter more for energy and utilities than for technology. Social factors, such as labour practices and human rights, can be material for certain industries but are often more difficult to quantify. Governance, however, is universally relevant and has a direct line to board‑level decision‑making and capital allocation.

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3. How Asset Managers Practice Stewardship

Asset managers practice stewardship by using their influence as shareholders to promote good governance and long‑term value creation. The two primary tools are proxy voting and shareholder engagement.

Proxy Voting — The Key Tool

Proxy voting is the process by which asset managers vote on shareholder resolutions at company annual general meetings (AGMs) and extraordinary general meetings (EGMs). These votes cover a wide range of issues, including:

• Election of directors — supporting or opposing board nominees
• Executive compensation — say‑on‑pay votes
• Climate and environmental proposals — resolutions on emissions targets, climate risk disclosure, and transition plans
• Social proposals — diversity, human rights, and labour practices
• Governance reforms — proxy access, shareholder rights, and board structure

In 2025, support for climate‑related shareholder proposals reached an average of 35‑40% across major markets, up significantly from around 20‑25% in 2018. This trend reflects growing investor demand for companies to address climate risk and align their business models with the goals of the Paris Agreement.

Shareholder Engagement and Activism

Beyond voting, asset managers engage directly with company boards and management teams through private dialogues, letters, and public statements. This engagement can cover a wide range of issues, from board composition and strategy to climate risk and executive pay. In some cases, engagement escalates to shareholder activism, where investors file resolutions or publicly campaign for change.

Major asset managers such as BlackRock, Vanguard, State Street, and Legal & General have all increased their stewardship activities in recent years, publishing annual stewardship reports and voting guidelines that articulate their expectations for portfolio companies.

Voting Records of Major Asset Managers (2026 Update)

Proxy voting data from 2025 shows that support for climate resolutions has continued to rise, though there is significant variation across asset managers. BlackRock supported approximately 30% of climate resolutions in 2025, up from 23% in 2018. Vanguard’s support increased from roughly 5% in 2018 to around 25% in 2025, reflecting a notable shift in its approach. Goldman Sachs maintained its relatively high level of support at approximately 85%, while Legal & General remained at the higher end with around 90% support for climate‑related proposals.

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4. ESG Governance in 2026 — Key Trends

Several key trends are shaping the ESG governance landscape in 2026.

Rising support for climate resolutions — Shareholder proposals on climate risk, emissions targets, and transition plans continue to gain support. Average support across major markets has risen from around 20‑25% in 2018 to 35‑40% in 2025, with further increases expected in 2026 as investors become more sophisticated in their climate analysis.

Adoption of ISSB global standards — The International Sustainability Standards Board (ISSB) issued its first two standards, IFRS S1 (general sustainability disclosures) and IFRS S2 (climate‑related disclosures), in 2023‑2024. These standards are being adopted by regulators around the world, creating a global baseline for sustainability reporting and improving comparability across companies and jurisdictions.

Greater focus on board diversity — Investors are increasingly demanding that companies disclose board diversity metrics and set targets for gender and ethnic representation. In 2025, the majority of S&P 500 companies had at least one woman on their board, and many have now set 30‑40% diversity targets for their boards.

Executive compensation linked to ESG — More companies are incorporating ESG metrics into executive compensation plans, linking pay to performance on climate targets, diversity goals, and governance metrics. By 2025, over 60% of S&P 500 companies had some form of ESG‑linked compensation, up from less than 30% in 2018.

Regulatory developments — The EU’s Sustainable Finance Disclosure Regulation (SFDR) continues to shape ESG investing in Europe, while the US Securities and Exchange Commission (SEC) has proposed rules on climate‑related disclosures, though some provisions remain contested. These regulatory developments are driving greater transparency and accountability in ESG reporting and governance practices.

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5. ESG Corporate Governance — Key Statistics

The table below summarises key statistics on ESG governance and its impact on investment performance.

📌 ESG assets continue to grow, and governance remains the most consistently positive factor in ESG performance studies.

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6. Asset Manager Proxy Voting — Comparison Table

The table below compares the proxy voting records of major asset managers on climate‑related shareholder proposals, showing the evolution from 2018 to 2025.

📌 Support for climate resolutions has increased across all major asset managers, though there remains significant variation in voting approaches.

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7. Good Governance vs Poor Governance — Performance Comparison

The table below contrasts the characteristics and performance of companies with strong and weak corporate governance.

📌 Companies with strong governance consistently outperform their peers, with lower volatility and better risk‑adjusted returns.

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8. Frequently Asked Questions

What is ESG corporate governance?

ESG corporate governance refers to the systems, principles, and processes by which companies are directed and controlled, focusing on board diversity, executive compensation, shareholder rights, transparency, and risk oversight. It is a key pillar of ESG investing.

Why does corporate governance matter for investment returns?

Companies with strong corporate governance tend to outperform their peers. Studies show that good governance can add up to 24 basis points per month in returns, making it one of the most important ESG factors for investors.

What is the Hermes study on governance?

The Hermes study (2018) examined ESG factors in the MSCI World Index from 2008 to 2018. It found that good governance provided the biggest uplift in shareholder value — 24 basis points per month — compared to social and environmental factors.

How do asset managers practice stewardship?

Asset managers practice stewardship through proxy voting, shareholder engagement, and dialogue with company boards. They use their voting rights to influence corporate governance, climate policy, and social responsibility.

What is proxy voting in ESG?

Proxy voting is the process by which asset managers vote on shareholder resolutions at company annual general meetings. ESG‑focused proxy voting includes supporting climate‑related proposals, board diversity, and executive compensation reforms.

How have asset managers’ voting records changed since 2018?

Support for climate‑related shareholder proposals has increased significantly. BlackRock went from 23% support in 2018 to approximately 30% in 2025. Vanguard increased from ~5% to ~25%, and Goldman Sachs from 80% to ~85%.

What are the ISSB standards?

The International Sustainability Standards Board (ISSB) issued global sustainability disclosure standards (IFRS S1 and S2) in 2023‑2024. These standards provide a framework for companies to report on ESG risks and opportunities, improving transparency for investors.

Does governance outperform social and environmental factors?

According to the Hermes study, governance provided the strongest performance uplift. Poor social practices led to underperformance of 15 basis points per month, while environmental factors had mixed results depending on the sector.

What is the role of shareholder activism in governance?

Shareholder activism involves investors using their ownership stakes to influence company behaviour. This can include filing shareholder resolutions, engaging with management, and voting against board proposals to improve governance and ESG performance.

What are the key trends in ESG governance for 2026?

Key trends include: increased support for climate resolutions, growing adoption of ISSB standards, more active proxy voting by asset managers, and greater focus on board diversity and executive compensation alignment with ESG goals.

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