About PlainIndex

Most index-fund research sits behind a paywall, alongside ratings influenced by the issuers being rated. PlainIndex publishes the methodology in full, computes scores from public regulatory data, and keeps the affiliate side of the business strictly separated from anything that touches a fund's score.

How it's funded

Brokerage affiliate links. If you open a Schwab, Fidelity, or M1 account through a link on this site, we may receive a referral fee. Affiliate relationships have no influence on any fund's score. Methodology weights and thresholds are set before any affiliate ranking is computed and are versioned on the methodology page.

Found a bug?

If a score on this site doesn't match what the methodology page says it should be, that's a bug. Email [email protected] with the ticker and what you expected.