Sentiment on Sustainable Investing Remains at High Levels

Despite a year marked by backlash, uncertainty, and a steady stream of headlines questioning the relevance of ESG and sustainability, recent data suggests a more nuanced reality. While public discourse has, at times, framed sustainability as losing momentum, investor behavior tells a different story.

A recent report published by Morgan Stanley, based on its "2026 Sustainable Signals" survey, points to continued strength in individual investor sentiment. According to the report, 92% of global respondents say they are interested in sustainable investing, up four points from 2025. That is a relevant signal in a year where sustainability has often been discussed through the lens of skepticism, political pressure, and market hesitation.

Individual investors are not only a growing force in capital markets, but also a reflection of broader expectations around how capital should be allocated, what risks should be considered, and what kind of future investment strategies should support.

Their sustained interest suggests that sustainability has not been displaced. It is evolving in how it is assessed, understood, and acted upon.

At the same time, the data invites a more careful reading. High levels of interest do not automatically translate into proportional capital allocation. The report notes that average portfolio allocation to sustainable investments is 31%, slightly down from 33% in 2025. This does not point to a collapse in interest. It points to a more deliberate market, where enthusiasm is being filtered through stronger expectations on performance, credibility, and evidence.

Sustainable investing appears to be moving away from a phase where positive sentiment was enough to drive action, and into a phase where investors want stronger proof that these strategies can deliver both financial and sustainability outcomes.

Performance, trust, and the growing scrutiny behind allocation decisions

One of the clearest signals from the report is the central role of financial performance in shaping investment decisions. Expectations around returns continue to influence how capital is allocated, even among investors who express strong interest in sustainability.

Morgan Stanley’s survey shows that over 80% of respondents say financial returns are a key driver of their interest in sustainable investing. More specifically, 45% say they want to support positive outcomes alongside a market-rate return, while 40% believe sustainable investments could offer stronger financial returns than traditional investments.

This is an important message for companies, asset managers, and sustainability professionals. Investors are not separating sustainability from financial discipline. They are asking whether sustainable investment strategies can deliver competitive returns, manage risk effectively, and support long-term value creation.

In practical terms, sustainable investment strategies are being assessed with the same rigor as any other investment. Environmental and social outcomes matter, but they need to sit within a credible investment case. The result is a more disciplined approach, where sustainability is integrated into decision-making, but not protected from scrutiny.

Alongside performance, trust has become a defining factor. Concerns around greenwashing continue to influence investor confidence. According to the report, 32% of respondents rate greenwashing as a very significant concern, and 27% identify it as the main barrier to including sustainable investments in their portfolios.

This is one of the most important findings in the report. The issue is not that investors are losing interest in sustainability. The issue is that they are becoming more demanding regarding what qualifies as credible. Claims need to be backed by data. Impact needs to be explained with more precision. Strategies need to show how sustainability is being translated into investment decisions, portfolio construction, and measurable outcomes.

The report also notes that, on average, 25% of respondents rate potential barriers to sustainable investing as very significant, up four points from 2025. That increase suggests that concerns are becoming more visible, even while interest remains high.

As a consequence, the demand for high-quality information is increasing. Investors are placing greater emphasis on transparency, consistency, and comparability in sustainability data. They are looking for information that helps them understand what companies intend to achieve, what they are delivering, and how those results connect to financial performance.

This has implications for both asset managers and companies. It raises the bar for how sustainability is communicated and measured, and it reinforces the importance of aligning narratives with tangible results. In a market where scrutiny is intensifying, credibility becomes a source of differentiation.

From Interest to Informed Decision-Making

These dynamics point to a broader evolution in sustainable investing. Sentiment remains strong, but the way investors engage with sustainability is becoming more sophisticated.

There is a visible move toward expertise and depth. Investors are not only interested in sustainable themes, but also in the mechanisms through which impact is generated and measured. They are paying closer attention to methodologies, data quality, investment assumptions, and the robustness of sustainability claims.

At the same time, the search for credible opportunities is influencing where capital may be directed. The report highlights growing relevance for private markets: 40% of investors already have private market exposure, 34% would like to invest in them in the future, and 64% see greater opportunities for sustainable or impact investments in private markets compared with public markets.

This reflects a desire for access to innovation, new business models, and investment opportunities where impact pathways may be more direct. It also reinforces a broader point: sustainable investing is becoming more specific. Investors are looking beyond broad labels and seeking strategies that offer a stronger connection between capital allocation, outcomes, and financial logic.

For companies, this evolving landscape introduces both pressure and opportunity. Access to capital is increasingly linked to the ability to demonstrate that sustainability is integrated into core operations and strategy. Organizations that can provide reliable, decision-useful information will be better positioned to build trust with investors.

What becomes evident is that sustainable investing is entering a more demanding phase. Intent alone is insufficient. Investors are looking for coherence between ambition, execution, and results. They are seeking better tools, stronger data, and more credible explanations of how sustainability contributes to performance, risk management, and long-term value creation.

In this context, the findings from Morgan Stanley’s "Sustainable Signals" report are less a simple reaffirmation of interest, and more an indication of how that interest is being translated into action. Sentiment remains high, but the next phase of the market will be shaped by performance, credibility, and the quality of information available to investors.

Sustainable investing is not retreating. It is becoming more analytical, more selective, and more closely tied to the fundamentals that guide capital allocation decisions.