As of 2025-06-30, the Relative Valuation of Prothena Corporation PLC (PRTA) is (28.78) USD. This relative valuation is based on P/E multiples. With the latest stock price at 6.08 USD, the upside of Prothena Corporation PLC based on Relative Valuation is -573.4%.
The range of the Relative Valuation is (18.11) - (38.06) USD.
Note: valuation result may not be accurate due to the company's negative earnings.
| Range | Selected | |
| Trailing P/E multiples | 8.1x - 18.6x | 13.5x |
| Forward P/E multiples | 8.8x - 19.2x | 14.6x |
| Fair Price | (18.11) - (38.06) | (28.78) |
| Upside | -397.8% - -726.0% | -573.4% |
| Date | P/E |
| 2025-06-27 | -2.97 |
| 2025-06-26 | -3.02 |
| 2025-06-25 | -2.92 |
| 2025-06-24 | -2.96 |
| 2025-06-23 | -2.96 |
| 2025-06-20 | -2.79 |
| 2025-06-18 | -2.81 |
| 2025-06-17 | -2.78 |
| 2025-06-16 | -2.76 |
| 2025-06-13 | -2.48 |
| 2025-06-12 | -2.48 |
| 2025-06-11 | -2.49 |
| 2025-06-10 | -2.57 |
| 2025-06-09 | -2.56 |
| 2025-06-06 | -2.64 |
| 2025-06-05 | -2.47 |
| 2025-06-04 | -2.38 |
| 2025-06-03 | -2.36 |
| 2025-06-02 | -2.27 |
| 2025-05-30 | -2.24 |
| 2025-05-29 | -2.29 |
| 2025-05-28 | -2.25 |
| 2025-05-27 | -2.24 |
| 2025-05-23 | -3.21 |
| 2025-05-22 | -3.20 |
| 2025-05-21 | -3.33 |
| 2025-05-20 | -3.56 |
| 2025-05-19 | -3.61 |
| 2025-05-16 | -3.51 |
| 2025-05-15 | -3.28 |
| 2025-05-14 | -3.36 |
| 2025-05-13 | -3.71 |
| 2025-05-12 | -3.72 |
| 2025-05-09 | -3.63 |
| 2025-05-08 | -3.47 |
| 2025-05-07 | -3.56 |
| 2025-05-06 | -3.59 |
| 2025-05-05 | -3.94 |
| 2025-05-02 | -4.15 |
| 2025-05-01 | -4.26 |
| 2025-04-30 | -4.49 |
| 2025-04-29 | -4.73 |
| 2025-04-28 | -4.71 |
| 2025-04-25 | -4.74 |
| 2025-04-24 | -4.71 |
| 2025-04-23 | -4.68 |
| 2025-04-22 | -4.66 |
| 2025-04-21 | -4.54 |
| 2025-04-17 | -4.49 |
| 2025-04-16 | -4.52 |