Investing
Sustainable (ESG) investment funds: a guide for Spanish investors in 2026
The range of funds labelled as sustainable has multiplied in Spain, but not all meet the same standards. We explain SFDR categories, how to compare returns and what to check before investing.
Key takeaways
Only funds classified as Article 9 under the SFDR regulation have sustainability as an explicit investment objective; the rest only promote it as a characteristic.
- The SFDR regulation classifies funds into Article 6 (no ESG focus), Article 8 (promotes environmental or social characteristics) and Article 9 (explicit sustainability objective).
- The historical return of global ESG funds has been similar to their traditional equivalents over the last decade, though with greater sensitivity to interest rates due to the weight of technology and renewables.
- Greenwashing remains a real risk: check the prospectus and the minimum committed percentage of sustainable investment, not just the fund's name.
How ESG funds are classified in Europe
The Sustainable Finance Disclosure Regulation (SFDR) requires managers to classify each fund according to its actual commitment to environmental, social and governance criteria, preventing any product from being labelled sustainable without justification.
In practice, most sustainable index funds available to retail investors in Spain are Article 8, since Article 9 funds tend to be more concentrated thematic funds with higher volatility.
Comparing cost, return and sector concentration
Indexed ESG funds usually have slightly higher fees than their traditional versions, between 0.10 and 0.25 percentage points more, due to the additional cost of applying exclusion filters and sustainability scores.
By excluding sectors such as fossil fuels, tobacco or weapons, these funds become more concentrated in technology and healthcare, which amplifies both gains and losses compared to an unfiltered global index.
Quick tips
- Check the fund's top ten holdings before investing: two different ESG funds can have very different compositions despite carrying the same label.
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