Amcor Plc (AMCR) is slightly undervalued and Smurfit WestRock plc (SW) is overvalued.
Against our estimates of intrinsic value, AMCR trades at the wider discount: a margin of safety of +13%, against -27% for SW.
Values as of the 22 Sept 2026 close.
Discounting its cash flows at 7.1% (average of 3 methods) values the shares at $49.91; the price of $43.24 is 13% below that value, and 83% of that value comes from beyond year five.
Leak Score 30/100 on 2 of 12 signals
Discounting its cash flows at 8.1% (average of 3 methods) values the shares at $36.68; the price of $46.45 is 27% above that value, and 80% of that value comes from beyond year five.
Leak Score 0/100 on 2 of 12 signals
| Metric | AMCR | SW |
|---|---|---|
| Verdict | Slightly undervalued | Overvalued |
| Price | $43.24 | $46.45 |
| Intrinsic value | $49.91 | $36.68 |
| Margin of safety | +13% | -27% |
| Leak Score | 30/100 (2/12) | 0/100 (2/12) |
| Market cap | $20.0B | $24.3B |
| Revenue growth, 5 years | 12.8% | 26.2% |
| Operating margin | 8.6% | 5.8% |
| Net margin | 4.7% | 1.6% |
| Return on equity | 9.4% | 2.7% |
| Debt to equity | 1.28 | 0.79 |
| P/E | 18.1x | 49.4x |
| Forward P/E | — | 13.3x |
| P/B | 1.7x | 1.4x |
| Dividend yield | 6.0% | 4.0% |