Prothena Corporation plc (PRTA)
NASDAQ: PRTA · Real-Time Price · USD
9.02
-0.01 (-0.11%)
At close: Feb 20, 2026, 4:00 PM EST
9.00
-0.02 (-0.22%)
After-hours: Feb 20, 2026, 6:08 PM EST
Prothena Corporation Analyst Ratings
Total Analysts
9
Consensus Rating
Buy
Price Target
$19.00
Upside
+110.64%
Ratings History
| Analyst | Firm | Rating | Rating | Action | Price Target | Upside | Date |
|---|---|---|---|---|---|---|---|
| RBC Capital | RBC Capital | Hold Maintains $11 → $12 | Hold | Maintains | $11 → $12 | +33.04% | Feb 20, 2026 |
| Citizens | Citizens | Buy Maintains $11 → $19 | Buy | Maintains | $11 → $19 | +110.64% | Dec 1, 2025 |
| HC Wainwright & Co. | HC Wainwright & Co. | Strong Buy Maintains $20 → $30 | Strong Buy | Maintains | $20 → $30 | +232.59% | Nov 7, 2025 |
| RBC Capital | RBC Capital | Hold Maintains $10 → $11 | Hold | Maintains | $10 → $11 | +21.95% | Nov 7, 2025 |
| Piper Sandler | Piper Sandler | Buy Maintains $15 → $36 | Buy | Maintains | $15 → $36 | +299.11% | Oct 28, 2025 |
| HC Wainwright & Co. | HC Wainwright & Co. | Strong Buy Maintains $14 → $20 | Strong Buy | Maintains | $14 → $20 | +121.73% | Oct 7, 2025 |
| JMP Securities | JMP Securities | Buy Maintains $29 → $11 | Buy | Maintains | $29 → $11 | +21.95% | Sep 2, 2025 |
| Piper Sandler | Piper Sandler | Buy Maintains $81 → $15 | Buy | Maintains | $81 → $15 | +66.30% | Aug 28, 2025 |
| Chardan Capital | Chardan Capital | Strong Buy Maintains $18 | Strong Buy | Maintains | $18 | +99.56% | Aug 28, 2025 |
| RBC Capital | RBC Capital | Hold Maintains $18 → $10 | Hold | Maintains | $18 → $10 | +10.86% | Aug 5, 2025 |
| HC Wainwright & Co. | HC Wainwright & Co. | Strong Buy Reiterates $14 | Strong Buy | Reiterates | $14 | +55.21% | Aug 5, 2025 |
| Chardan Capital | Chardan Capital | Strong Buy Maintains $18 | Strong Buy | Maintains | $18 | +99.56% | 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 | -55.65% | 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 | +798.00% | May 27, 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.