Prothena Corporation plc (PRTA)
NASDAQ: PRTA · Real-Time Price · USD
9.41
+0.05 (0.53%)
At close: Sep 26, 2025, 4:00 PM EDT
9.35
-0.06 (-0.64%)
After-hours: Sep 26, 2025, 7:53 PM EDT
Prothena Corporation Analyst Ratings
Total Analysts
10
Consensus Rating
Buy
Price Target
$12.29
Upside
+30.61%
Ratings History
| Analyst | Firm | Rating | Rating | Action | Price Target | Upside | Date |
|---|---|---|---|---|---|---|---|
| JMP Securities | JMP Securities | Buy Maintains $29 → $11 | Buy | Maintains | $29 → $11 | +16.90% | Sep 2, 2025 |
| Piper Sandler | Piper Sandler | Buy Maintains $81 → $15 | Buy | Maintains | $81 → $15 | +59.40% | Aug 28, 2025 |
| Chardan Capital | Chardan Capital | Strong Buy Maintains $18 | Strong Buy | Maintains | $18 | +91.29% | Aug 28, 2025 |
| RBC Capital | RBC Capital | Hold Maintains $18 → $10 | Hold | Maintains | $18 → $10 | +6.27% | Aug 5, 2025 |
| HC Wainwright & Co. | HC Wainwright & Co. | Strong Buy Reiterates $14 | Strong Buy | Reiterates | $14 | +48.78% | Aug 5, 2025 |
| Chardan Capital | Chardan Capital | Strong Buy Maintains $18 | Strong Buy | Maintains | $18 | +91.29% | 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 | -57.49% | 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 | +760.79% | May 27, 2025 |
| JMP Securities | JMP Securities | Buy Maintains $78 → $29 | Buy | Maintains | $78 → $29 | +208.18% | May 27, 2025 |
| Chardan Capital | Chardan Capital | Strong Buy Maintains $40 → $18 | Strong Buy | Maintains | $40 → $18 | +91.29% | May 27, 2025 |
| HC Wainwright & Co. | HC Wainwright & Co. | Strong Buy Maintains $30 → $14 | Strong Buy | Maintains | $30 → $14 | +48.78% | May 27, 2025 |
| HC Wainwright & Co. | HC Wainwright & Co. | Strong Buy Maintains $48 → $30 | Strong Buy | Maintains | $48 → $30 | +218.81% | May 9, 2025 |
| JMP Securities | JMP Securities | Buy Maintains $80 → $78 | Buy | Maintains | $80 → $78 | +728.91% | May 9, 2025 |
| Chardan Capital | Chardan Capital | Strong Buy Maintains $40 | Strong Buy | Maintains | $40 | +325.08% | 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.