Methodology

Each fund's identity, name, ISIN, ticker, domicile, replication method, distribution policy, UCITS status and inception date, comes from the KID and the prospectus published by the issuer, which are the only documents that legally define them. The total expense ratio is taken from the same documents rather than from a comparison site, because a TER quoted second-hand is often the one that applied before the last revision.

Assets under management and past performance come from the issuer's own daily publications, consolidated by market data providers. Performance is shown net of the TER and in the fund's base currency: a euro investor buying a dollar-denominated fund carries a currency exposure that no published performance figure includes.

The score compares a fund with the others that track a comparable index, never with the whole universe: a broad world tracker and a sector fund are not judged on the same scale. It weighs cost, size, tracking quality and structure, because those are the four things an investor can verify before buying and that persist over time.

Past performance is deliberately given little weight. Over the horizons published here it says more about the index than about the fund, and a tracker that beat its peers last year usually did so because its index did. What the score does not contain is any judgement on whether the underlying index suits you, which is the decision that matters most and the one no score can make.

A screener compares funds; it does not build a portfolio. The right allocation depends on your horizon, your tax residence, the wrapper you invest through and your tolerance for a fall of thirty per cent, none of which appear in a fund's factsheet. Eligibility for a tax wrapper such as the French PEA is stated where we can verify it, but the final word belongs to your broker and to the tax authority.

Nothing here is investment advice, and we hold no position in any fund listed. Figures are indicative and can be stale: a TER can change, a fund can be merged or closed, and a share class can be replaced. Before buying, read the KID for the exact share class your broker offers, and where a figure here and that document disagree, the document prevails.

The database is reviewed when an issuer publishes a revised KID, when a fund is created, merged or closed, and at least quarterly otherwise. Each page carries the date of its last real change rather than today's date, so that an unchanged page does not pass for a fresh one.

If a figure looks wrong, write to contact@rightetf.com naming the fund and the document you believe it contradicts. We check it against the source, correct it if the error is confirmed, and carry the correction across to every page that used the same figure.

Fund documentation and UCITS rules: European Securities and Markets Authority. National oversight of funds marketed in France: Autorité des marchés financiers. In Germany: Bundesanstalt für Finanzdienstleistungsaufsicht. Key information documents and prospectuses are published by each issuer and prevail over any summary of them.