The Moat Index

Compare moats, side by side.

Two to four companies, scored on the same four filters from their SEC filings — so the comparison is apples to apples. The method is fully public.

Try AAPL vs MSFT vs KO, V vs MA, or COST vs WMT vs TGT.

AD · Communications · No moat

31/ 100
No moat

Doesn't clear the bar

LUMN · Communications · No moat

33/ 100
No moat

Doesn't clear the bar

SPIR · Communications · No moat

32/ 100
No moat

Doesn't clear the bar

ROKU · Communications · No moat

31/ 100
No moat

Doesn't clear the bar

MeasureADLUMNSPIRROKU
Moat Score (0–100)3133 (highest)3231
Pricing power7582 (highest)3964
Returns on capital0004 (highest)
Balance-sheet safety28055 (highest)28
Capital discipline1744 (highest)44 (highest)24
Margin of safety349% above valueNo price dataNo price dataNo price data
Market cap$3.0B$6.4B$387.9M$21.4B
Moat tierNo moatNo moatNo moatNo moat
Filings as ofFY2025FY2025FY2025FY2025
AD vs LUMN vs SPIR vs ROKU — Moat Score Comparison · Buy Like Buffett