The Moat Index
The Moat Index Reports.
The Index isn't just a page — it's a publishing beat. Each report below is built from primary SEC filings and refreshes as companies file. They're free to cite, quote, and link. If you write about business quality or value investing, this is your raw material.
The Widest Moats
The full operating-company ranking by moat durability, scored from SEC filings. Coverage includes operating companies whose annual SEC filings provide enough comparable inputs for the relevant model; missing inputs remain unscored rather than guessed.
Read the report →Quarterly screenQuality on Sale
Wide- and narrow-moat businesses trading below the disclosed value if growth stopped today.
Read the report →Quarterly reportMoat Movers
The businesses whose moat widened or eroded most — visible only because the history is kept.
Read the report →Standing studyThe Backtest
Each year's widest moats, scored with only the filings on file then, against the returns that followed — losing years and unfinished windows left in.
Read the report →Research notes
Time-stamped, permanent findings at fixed URLs — including the ones that don’t flatter us. Each is computed from the backtest and stamped with the date and methodology version that produced it.
The MOAT ETF, scored
Every equity in VanEck’s time-stamped MOAT holdings file joined to our live company API, with model markers and missing data left visible.
Open the dataset →Note · July 18, 2026Quality’s Five-Year Drought
Our own equal-weight quality screen has trailed the S&P for five straight years, and loses to a dividend-adjusted index over the full 14. Published before any reversion, not after.
Read the note →