Prothena Corporation Stock Forecast

Stock Price Forecast

According to 7 professional analysts, the 12-month price target for Prothena Corporation stock ranges from a low of $4.00 to a high of $36. The average analyst price target of $18.86 forecasts a 70.37% increase in the stock price over the next year.

Price Target: $18.86 (+70.37%)

Analyst Consensus: Buy

Target	Low	Average	Median	High
Price	$4.00	$18.86	$18	$36
Change	-63.87%	+70.37%	+62.60%	+225.20%

Analyst Ratings

The average analyst rating for Prothena Corporation stock is "Buy". This means that analysts believe this stock is likely to outperform the market over the next twelve months.

Recommendation Trends

Rating	Jul '25	Aug '25	Sep '25	Oct '25	Nov '25	Dec '25
Strong Buy	2	3	3	3	3	3
Buy	3	3	3	2	2	2
Hold	3	3	3	3	3	3
Sell	1	1	1	1	1	1
Strong Sell	0	0	0	0	0	0
Total	9	10	10	9	9	9

Latest Forecasts

Analyst	Firm	Rating	Rating	Action	Price Target	Upside	Date
Jason Butler Citizens	Citizens	Buy Maintains $11 → $19	Buy	Maintains	$11 → $19	+71.64%	Dec 1, 2025
Andrew S. Fein HC Wainwright & Co.	HC Wainwright & Co.	Strong Buy Maintains $20 → $30	Strong Buy	Maintains	$20 → $30	+171.00%	Nov 7, 2025
Brian Abrahams RBC Capital	RBC Capital	Hold Maintains $10 → $11	Hold	Maintains	$10 → $11	-0.63%	Nov 7, 2025
Yasmeen Rahimi Piper Sandler	Piper Sandler	Buy Maintains $15 → $36	Buy	Maintains	$15 → $36	+225.20%	Oct 28, 2025
Andrew S. Fein HC Wainwright & Co.	HC Wainwright & Co.	Strong Buy Maintains $14 → $20	Strong Buy	Maintains	$14 → $20	+80.67%	Oct 7, 2025

More Analyst Ratings

Financial Forecast

Revenue This Year

11.28M

from 135.16M

-91.65%

from 135.16M

Revenue Next Year

103.70M

from 11.28M

819.08%

from 11.28M

EPS This Year

-4.82

from -2.27

EPS Next Year

-0.33

from -4.82

Fiscal Year	FY 2020	FY 2021	FY 2022	FY 2023	FY 2024	FY 2025	FY 2026
Period Ending	Dec 31, 2020	Dec 31, 2021	Dec 31, 2022	Dec 31, 2023	Dec 31, 2024	Dec 31, 2025	Dec 31, 2026
Revenue	853.00K	200.58M	53.91M	91.37M	135.16M	11.28M	103.70M
Revenue Growth	4.79%	23,414.30%	-73.13%	69.50%	47.92%	-91.65%	819.08%
EPS	-2.78	1.38	-2.47	-2.76	-2.27	-4.82	-0.33
EPS Growth	-	-	-	-	-	-	-
Forward PE	-	-	-	-	-	-	-
No. Analysts	-	-	-	-	-	9	9

Historical EPS numbers are GAAP, while forecasted numbers may be non-GAAP.

Revenue Forecast

Revenue	2025	2026
High	15.8M	110.3M
Avg	11.3M	103.7M
Low	9.4M	98.0M

Revenue Growth

Revenue Growth	2025	2026
High	-88.3%	877.1%
Avg	-91.7%	819.1%
Low	-93.0%	768.6%

EPS Forecast

EPS	2025	2026
High	-4.75	0.41
Avg	-4.82	-0.33
Low	-4.94	-1.59

EPS Growth

EPS Growth	2025	2026
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.