The Moat Index
Compare moats, side by side.
Two to four companies, scored on the same five investor questions from their SEC filings — so the comparison is apples to apples. The method is fully public.
MRK · Healthcare · Wide moat
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The returnsOnCapital component abstained: Not enough years of ROIC data to score returns on capital. The other four 20% weights were renormalized over the scored 80%.
| Measure | ISRG | CORT | IRMD | MRK |
|---|---|---|---|---|
| Moat Score (0–100) | 90 | 92 (highest) | 91 | 89 |
| Methodology version | moat-index@3.0.0 | moat-index@3.0.0 | moat-index@3.0.0 | moat-index@3.0.0 |
| Business trend | 95 | 71 | 100 (highest) | 88 |
| Pricing power | 100 (highest) | 100 (highest) | 100 (highest) | 98 |
| Returns on capital | 77 | 97 (highest) | 93 | — |
| Balance-sheet safety | 100 (highest) | 100 (highest) | 100 (highest) | 74 |
| Capital allocation | 77 | 92 | 60 | 97 (highest) |
| 647% above value if growth stopped today | 936% above value if growth stopped today | 501% above value if growth stopped today | 126% above value if growth stopped today (largest discount to value if growth stopped today) | |
| Market cap | $149.2B | $12.3B | $1.1B | $364.3B |
| Moat tier | Wide moat | Wide moat | Wide moat | Wide moat |
| Filing date | FY2025 | FY2025 | FY2025 | FY2025 |