In short: Sustainable investing in Switzerland should start with definitions, index methodology, exclusions, data provider rules and greenwashing checks. ESG labels are useful only when the investor understands what the fund or index actually screens.
ESG investing can help align a portfolio with sustainability preferences. It can also confuse investors when labels are vague, methodologies differ and marketing language becomes stronger than the underlying rules.
This guide gives Swiss investors a practical checklist for reading ESG funds, sustainable indices and greenwashing risk.
ESG is not one strategy
ESG can mean many things:
- exclusion of controversial activities;
- best-in-class company selection;
- climate transition metrics;
- governance quality screens;
- impact objectives;
- sustainability-themed indices;
- stewardship and voting policies.
Two funds can both use ESG language while holding very different companies. The label is the start of the analysis, not the conclusion.
Start with the index or fund methodology
For index-tracking products, methodology is the key document. Investors should ask:
- What universe does the index start from?
- Which companies are excluded?
- Which ESG rating or data provider is used?
- How often are components reviewed?
- Are weights capped?
- Does the index preserve sector exposure or intentionally change it?
SIX offers Swiss ESG index families and sustainability-related equity indices. Those indices can be useful references, but investors should still read the methodology behind the product they buy.
FINMA's greenwashing concern
FINMA states that its mandate includes protecting clients and investors from improper business conduct, including deception. In sustainable finance, the central risk is that investors are misled about the sustainability features of products or services.
For an investor, that means marketing claims should be checked against documents. A product page is not enough.
Investor checklist before buying an ESG fund
Use this checklist:
- Identify whether the product is an index fund, active fund or structured product.
- Read the sustainability objective in the fund documents.
- Check exclusions and selection criteria.
- Identify the ESG data provider or rating framework.
- Compare holdings with a non-ESG alternative.
- Check whether concentration changed.
- Review voting and stewardship policy if relevant.
- Confirm tax records, domicile and currency like any other ETF.
Sustainability does not replace ordinary ETF due diligence. It adds another layer.
Compare ESG exposure with Swiss market exposure
Swiss ESG products can still be concentrated in the same large sectors that dominate Swiss equities. A sustainable index may reduce some exposures but increase others.
Before buying, compare:
- SMI or SPI exposure;
- Swiss ESG index exposure;
- global ESG ETF exposure;
- existing holdings in the portfolio.
The Swiss ETF guide and Sustainable investing pillar help connect these decisions.
Common greenwashing red flags
Be careful when:
- the product uses broad sustainability language without methodology;
- exclusions are vague;
- holdings do not match the stated objective;
- the benchmark is unclear;
- the fund uses ESG branding but reports little evidence;
- the investor cannot tell whether the objective is risk reduction, values alignment or impact.
If the claim is hard to verify, treat it as marketing until proven otherwise.
FAQ
Is an ESG fund automatically lower risk?
No. ESG screens can change risk, but they do not remove equity risk, concentration risk, currency risk or valuation risk.
Are SIX ESG indices investment advice?
No. They are index frameworks. Investors still need to choose whether a product tracking or referencing an index fits their portfolio.
What is the first document to read?
For an ETF, start with the fund factsheet and index methodology. Then compare holdings and exposures with the non-ESG alternative.
Official sources and further reading
- SIX ESG indices: official overview of Swiss ESG index offerings.
- SIX ESG equity indices: official Swiss ESG equity index examples and methodology context.
- SIX sustainability reporting: official listed-company sustainability reporting information.
- FINMA sustainable finance dossier: official FINMA context on greenwashing and sustainable finance.
Bottom line
Sustainable investing needs evidence. Read the methodology, holdings and greenwashing risks before trusting the label.