As of 2026-01-07, the Relative Valuation of Prothena Corporation PLC (PRTA) is (53.40) USD. This relative valuation is based on P/E multiples. With the latest stock price at 8.97 USD, the upside of Prothena Corporation PLC based on Relative Valuation is -695.4%.
The range of the Relative Valuation is (43.35) - (62.21) USD.
Note: valuation result may not be accurate due to the company's negative earnings.
| Range | Selected | |
| Trailing P/E multiples | 8.3x - 12.6x | 10.4x |
| Forward P/E multiples | 8.2x - 11.9x | 10.0x |
| Fair Price | (43.35) - (62.21) | (53.40) |
| Upside | -583.3% - -793.5% | -695.4% |
| Date | P/E |
| 2026-01-06 | -1.72 |
| 2026-01-05 | -1.75 |
| 2026-01-02 | -1.77 |
| 2025-12-31 | -1.83 |
| 2025-12-30 | -1.79 |
| 2025-12-29 | -1.82 |
| 2025-12-26 | -1.83 |
| 2025-12-24 | -1.86 |
| 2025-12-23 | -1.82 |
| 2025-12-22 | -1.86 |
| 2025-12-19 | -1.77 |
| 2025-12-18 | -1.80 |
| 2025-12-17 | -1.81 |
| 2025-12-16 | -1.87 |
| 2025-12-15 | -1.91 |
| 2025-12-12 | -1.99 |
| 2025-12-11 | -1.98 |
| 2025-12-10 | -1.89 |
| 2025-12-09 | -1.98 |
| 2025-12-08 | -2.06 |
| 2025-12-05 | -2.12 |
| 2025-12-04 | -2.14 |
| 2025-12-03 | -2.14 |
| 2025-12-02 | -1.99 |
| 2025-12-01 | -1.97 |
| 2025-11-28 | -2.06 |
| 2025-11-26 | -2.00 |
| 2025-11-25 | -2.02 |
| 2025-11-24 | -2.00 |
| 2025-11-21 | -2.01 |
| 2025-11-20 | -1.93 |
| 2025-11-19 | -1.92 |
| 2025-11-18 | -1.99 |
| 2025-11-17 | -1.97 |
| 2025-11-14 | -1.91 |
| 2025-11-13 | -1.95 |
| 2025-11-12 | -2.08 |
| 2025-11-11 | -2.01 |
| 2025-11-10 | -2.02 |
| 2025-11-07 | -2.03 |
| 2025-11-06 | -1.93 |
| 2025-11-05 | -1.97 |
| 2025-11-04 | -1.97 |
| 2025-11-03 | -2.02 |
| 2025-10-31 | -2.06 |
| 2025-10-30 | -2.01 |
| 2025-10-29 | -2.04 |
| 2025-10-28 | -2.02 |
| 2025-10-27 | -1.99 |
| 2025-10-24 | -1.88 |