Prothena Corporation plc (PRTA)
NASDAQ: PRTA · Real-Time Price · USD
8.27
+0.07 (0.85%)
At close: Sep 2, 2025, 4:00 PM
8.27
0.00 (0.00%)
After-hours: Sep 2, 2025, 4:01 PM EDT
Prothena Corporation Analyst Ratings
Total Analysts
10
Consensus Rating
Buy
Price Target
$12.29
Upside
+48.61%
Ratings History
| Analyst | Firm | Rating | Rating | Action | Price Target | Upside | Date |
|---|---|---|---|---|---|---|---|
| JMP Securities | JMP Securities | Buy Maintains $29 → $11 | Buy | Maintains | $29 → $11 | +33.01% | Sep 2, 2025 |
| Piper Sandler | Piper Sandler | Buy Maintains $81 → $15 | Buy | Maintains | $81 → $15 | +81.38% | Aug 28, 2025 |
| Chardan Capital | Chardan Capital | Strong Buy Maintains $18 | Strong Buy | Maintains | $18 | +117.65% | Aug 28, 2025 |
| RBC Capital | RBC Capital | Hold Maintains $18 → $10 | Hold | Maintains | $18 → $10 | +20.92% | Aug 5, 2025 |
| HC Wainwright & Co. | HC Wainwright & Co. | Strong Buy Reiterates $14 | Strong Buy | Reiterates | $14 | +69.29% | Aug 5, 2025 |
| Chardan Capital | Chardan Capital | Strong Buy Maintains $18 | Strong Buy | Maintains | $18 | +117.65% | Aug 5, 2025 |
| Cantor Fitzgerald | Cantor Fitzgerald | Hold Reiterates n/a | Hold | Reiterates | n/a | n/a | Jun 20, 2025 |
| B of A Securities | B of A Securities | Hold → Sell Downgrades $22 → $4 | Hold → Sell | Downgrades | $22 → $4 | -51.63% | May 28, 2025 |
| Oppenheimer | Oppenheimer | Buy → Hold Downgrades n/a | Buy → Hold | Downgrades | n/a | n/a | May 27, 2025 |
| Piper Sandler | Piper Sandler | Buy Maintains $110 → $81 | Buy | Maintains | $110 → $81 | +879.44% | May 27, 2025 |
| JMP Securities | JMP Securities | Buy Maintains $78 → $29 | Buy | Maintains | $78 → $29 | +250.67% | May 27, 2025 |
| Chardan Capital | Chardan Capital | Strong Buy Maintains $40 → $18 | Strong Buy | Maintains | $40 → $18 | +117.65% | May 27, 2025 |
| HC Wainwright & Co. | HC Wainwright & Co. | Strong Buy Maintains $30 → $14 | Strong Buy | Maintains | $30 → $14 | +69.29% | May 27, 2025 |
| HC Wainwright & Co. | HC Wainwright & Co. | Strong Buy Maintains $48 → $30 | Strong Buy | Maintains | $48 → $30 | +262.76% | May 9, 2025 |
| JMP Securities | JMP Securities | Buy Maintains $80 → $78 | Buy | Maintains | $80 → $78 | +843.17% | May 9, 2025 |
| Chardan Capital | Chardan Capital | Strong Buy Maintains $40 | Strong Buy | Maintains | $40 | +383.68% | May 9, 2025 |
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Analyst Star Rankings
Our analyst star rankings are based on these four factors
- Success Rate
- The percentage of ratings that are profitable.
- Average Return
- The average percentage return within one year of the rating.
- Rating Count
- The more ratings the analyst has provided, the higher the score.
- Recency
- Ratings provided within the past year contribute to a higher score.