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.
SI · Healthcare · Narrow 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%.
CARL · Healthcare · Narrow 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%.
BIIB · Healthcare · Narrow moat
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The balanceSheet component abstained: Insufficient leverage/coverage inputs to score the balance sheet. The other four 20% weights were renormalized over the scored 80%.
| Measure | ZBH | SI | CARL | BIIB |
|---|---|---|---|---|
| Moat Score (0–100) | 67 (highest) | 67 (highest) | 67 (highest) | 67 (highest) |
| Methodology version | moat-index@3.0.0 | moat-index@3.0.0 | moat-index@3.0.0 | moat-index@3.0.0 |
| Business trend | 75 (highest) | 70 | 70 | 32 |
| Pricing power | 100 (highest) | 100 (highest) | 100 (highest) | 96 |
| Returns on capital | 6 | — | — | 100 (highest) |
| Balance-sheet safety | 100 (highest) | 55 | 55 | — |
| Capital allocation | 55 (highest) | 44 | 44 | 40 |
| 2% above value if growth stopped today (largest discount to value if growth stopped today) | No price data | No price data | 39% above value if growth stopped today | |
| Market cap | $17.9B | $421M | $287M | $29.7B |
| Moat tier | Narrow moat | Narrow moat | Narrow moat | Narrow moat |
| Filing date | FY2025 | FY2025 | FY2025 | FY2025 |