Sustainable Fund Returns Slightly Below Traditional Peers in Second Half of 2025

Mar 11, 2026

Sustainable funds saw net outflows in the second half of the year, with median fund performance at 5.3%, just below traditional peers’ 5.5%.

Key Takeaways

  • Sustainable funds’ assets under management (AUM) reached a record $4.13 trillion at the end of December 2025, up 4.0% from June, but their share of total global fund assets declined to 6.5%, as traditional funds saw stronger flows.

  • Sustainable funds recorded net outflows of $86.4 billion in 2H 2025, more than offsetting inflows earlier in the year. Europe-domiciled sustainable funds recorded outflows for the first time, although much of this was driven by reallocations to bespoke mandates.

  • Sustainable funds delivered median returns of 5.3% in 2H 2025, just below traditional funds at 5.5%. Sustainable funds outperformed in most regions, but differences in geographic exposure offset this overall.

Sustainable investment funds ended 2025 with assets at a new global high of $4.13 trillion, helped by strong markets, but the second half of the year saw pressures on fund flows. According to the latest Sustainable Reality report from the Morgan Stanley Institute for Sustainable Investing, sustainable funds’ median returns of 5.3% in the second half of 2025 were just below traditional peers' at 5.5%, while net outflows reduced their share of the broader fund universe.

 

Assets reached a new high, but market share continued to edge lower

Global sustainable fund AUM rose to a record $4.13 trillion by year‑end 2025, up 4.0% from June 2025 and 16.3% year-over-year, according to Morningstar data.

 

Despite this increase, sustainable funds’ share of total global fund AUM declined to 6.5%, continuing a gradual pullback from the 7.2% peak reached in June 2023. The decline in market share reflects stronger net inflows into traditional funds, which expanded the overall fund universe at a faster pace than sustainable products during the year. 

 

 

Source: Morgan Stanley Institute for Sustainable Investing analysis of Morningstar data as of February 5, 2026. Note that all datapoints are restated based on the current period classification, which can result in small changes to prior period numbers. * The September 2025 edition of Sustainable Reality put sustainable fund AUM at $3.92 trillion, 6.7% of prior year-end AUM. ​

 

Sustainable funds saw outflows in the second half of 2025

After modest inflows in the first half of the year, sustainable fund flows turned negative in 2H 2025, with net outflows of $86.4 billion, equivalent to 2.4% of prior year‑end AUM. For the full year, sustainable funds recorded outflows of $62.8 billion, or 1.8% of prior year‑end AUM.

 

By contrast, traditional funds recorded net inflows in every quarter of 2025, ending the year with inflows up 4.3% of prior year‑end AUM.

 

Source: Morgan Stanley Institute for Sustainable Investing analysis of Morningstar data as of February 5, 2026

 

 

 

 

 

Source: Morgan Stanley Institute for Sustainable Investing analysis of Morningstar data as of February 5, 2026

 

Europe drove second‑half outflows, with North America flows also negative 

From a domicile perspective, Europe‑domiciled sustainable funds accounted for most of the second‑half outflows, at $76.4 billion. This marked the first instance of net outflows for Europe‑domiciled sustainable funds in our dataset, though Morningstar notes that much of this was linked to asset owners reallocating from pooled sustainable funds into bespoke sustainability mandates.  Bespoke mandates are not captured in Morningstar’s fund database, and so these reallocations appear as outflows in the data, even though the capital may remain invested in sustainability‑oriented strategies.

 

North America‑domiciled sustainable funds remained in negative territory, extending a multi‑year trend of quarterly outflows that began in late 2022.

 

Asia‑domiciled sustainable funds were the only regional group to record net inflows in 2H 2025, posting positive flows relative to AUM and outperforming Europe and North America.

 

Source: Morgan Stanley Institute for Sustainable Investing analysis of Morningstar data as of February 5, 2026

 

 

 

 

 

Source: Morgan Stanley Institute for Sustainable Investing analysis of Morningstar data as of February 5, 2026

 

Returns slightly below traditional peers, shaped by geographic exposure

After recording double-digit returns and outperforming traditional funds in the first half of 2025, sustainable funds delivered median returns of 5.3% in the second half of 2025, narrowly trailing traditional funds at 5.5%. 

 

Source: Morgan Stanley Institute for Sustainable Investing analysis of Morningstar data as of February 5, 2026

 

While sustainable funds outperformed traditional peers in most individual investment regions, overall relative performance was influenced by portfolio geography. Sustainable funds continue to be more heavily allocated to Global and Europe investment areas, which were among the weaker‑performing regions during the period. Seventy percent of sustainable funds invest globally or in Europe, compared to just 40% for traditional funds, amplifying the impact of regional return differences on aggregate results.

 

As a result, even though sustainable funds performed competitively within regions, their overall median return for the period came in slightly below that of traditional peers.

 

Source: Morgan Stanley Institute for Sustainable Investing analysis of Morningstar data as of February 5, 2026

 

In addition, 89% of sustainable funds delivered positive returns in 2H 2025, compared with 84% of traditional funds, suggesting a higher probability of selecting a fund with positive returns within the sustainable universe during the period. 

 

Over a longer period, sustainable funds have outperformed traditional funds. Institute analysis of Morningstar data found that investing a hypothetical $100 into a sustainable fund in December 2018 would equate to $162 today, while investing $100 into a traditional fund over the same period would equate to $152.

 

Source: Morgan Stanley Institute for Sustainable Investing analysis of Morningstar data as of February 5, 2026

Read the Full “Sustainable Reality” Report

Read the full analysis of sustainable and traditional funds in the second half of 2025.