Prothena Corporation plc (PRTA)
NASDAQ: PRTA · Real-Time Price · USD
10.02
+0.75 (8.09%)
At close: Jun 26, 2026, 4:00 PM EDT
10.00
-0.02 (-0.20%)
After-hours: Jun 26, 2026, 7:30 PM EDT
Prothena Corporation Stock Forecast
Stock Price Forecast
The 6 analysts with 12-month price forecasts for Prothena Corporation stock have an average target of 20.83, with a low estimate of 8.00 and a high estimate of 36. The average target predicts an increase of 107.88% from the current stock price of 10.02.
Analyst Consensus: Hold
* Price targets were last updated on May 9, 2026.
Analyst Ratings
The average analyst rating for Prothena Corporation stock from 6 stock analysts is "Hold". This means that analysts believe this stock is likely to perform similarly to the overall market.
Recommendation Trends
| Rating | Oct '25 | Nov '25 | Dec '25 | Feb '26 | Mar '26 | May '26 |
|---|---|---|---|---|---|---|
| Strong Buy | 1 | 2 | 2 | 2 | 1 | 1 |
| Buy | 3 | 2 | 2 | 2 | 2 | 2 |
| Hold | 2 | 2 | 2 | 2 | 2 | 2 |
| Sell | 1 | 1 | 1 | 1 | 1 | 1 |
| Strong Sell | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 7 | 7 | 7 | 7 | 6 | 6 |
Latest Forecasts
| Analyst | Firm | Rating | Rating | Action | Price Target | Upside | Date |
|---|---|---|---|---|---|---|---|
| RBC Capital | RBC Capital | Hold Maintains $12 → $13 | Hold | Maintains | $12 → $13 | +29.74% | May 9, 2026 |
| H.C. Wainwright | H.C. Wainwright | Buy Maintains $30 | Buy | Maintains | $30 | +199.40% | May 8, 2026 |
| Piper Sandler | Piper Sandler | Buy Maintains $36 | Buy | Maintains | $36 | +259.28% | May 8, 2026 |
| Citizens JMP | Citizens JMP | Buy Maintains $19 → $20 | Buy | Maintains | $19 → $20 | +99.60% | May 8, 2026 |
| Bank of America Securities | Bank of America Securities | Sell Reiterates $8 | Sell | Reiterates | $8 | -20.16% | May 8, 2026 |
Financial Forecast
Revenue This Year
83.32M
from 9.68M
Increased by 760.40%
Revenue Next Year
22.00M
from 83.32M
Decreased by -73.60%
EPS This Year
0.05
from -3.98
EPS Next Year
-1.31
from 0.05
Revenue Forecast
| Revenue | 2026 | 2027 | 2028 |
|---|---|---|---|
| High | 106.1M | 100.0M | |
| Avg | 83.3M | 22.0M | |
| Low | 51.1M | n/a |
Revenue Growth
| Revenue Growth | 2026 | 2027 | 2028 |
|---|---|---|---|
| High | 995.5% | 20.0% | |
| Avg | 760.4% | -73.6% | |
| Low | 427.7% | -100.0% |
EPS Forecast
| EPS | 2026 | 2027 | 2028 |
|---|---|---|---|
| High | - | - | |
| Avg | 0.05 | -1.31 | |
| Low | - | - |
EPS Growth
| EPS Growth | 2026 | 2027 | 2028 |
|---|---|---|---|
| High | - | - | |
| Avg | - | - | |
| Low | - | - |
Sources: Price targets and analyst ratings provided by Benzinga. Revenue and EPS forecast data provided by Finnhub. The data is sourced from Wall Street analysts. Data disclaimer.