PRTA - Prothena plc - Stock Forecast

Coverage Stock analysts Price Targets & Ratings Chart Insider Trading

PRTA is currently covered by 4 analysts with an average price target of $24.25. This is a potential upside of $13.91 (150.52%) from yesterday's end of day stock price of $9.68.

Prothena plc's activity chart (see below) currently has 106 price targets and 95 ratings on display. The stock rating distribution of PRTA is 27.27% HOLD and 72.73% BUY.

Stock Analyst Price Targets - Review

Analysts average stock forecasts to be materialized ratio is 46.55% with an average time for these price targets to be met of 324.27 days.

Highest price target for PRTA is $36, Lowest price target is $12, average price target is $24.25.

Most recent stock forecast was given by from RBC on 20-Feb-2026. First documented stock forecast 20-Mar-2015.

Currently out of the existing stock ratings of PRTA, 3 are a HOLD (27.27%), 8 are a BUY (72.73%).

Analyst name

Rating

Current price target

Potential Upside

Previous price target

Date of last PT

Price targets met ratio

Average potential upside

Average Days to Hit Target

Performance score

Hold Since 04-Nov-2022

$12

$1.98 (19.76%)

$11

4 months 18 days ago
(20-Feb-2026)

5/11 (45.45%)

$2.98 (33.04%)

99

Buy Since 25-May-2022

$19

$8.98 (89.62%)

7 months 7 days ago
(01-Dec-2025)

1/10 (10%)

$8.73 (85.00%)

126

Buy Since 07-Dec-2020

$30

$19.98 (199.40%)

7 months 28 days ago
(10-Nov-2025)

5/15 (33.33%)

$19.47 (184.90%)

52

Buy Since 27-Jan-2023

$36

$25.98 (259.28%)

8 months 10 days ago
(28-Oct-2025)

0/11 (0%)

$25.46 (241.56%)

Hold Since 01-Oct-2024

$4

$-6.02 (-60.08%)

1 years 1 months 10 days ago
(28-May-2025)

1/6 (16.67%)

$-0.6 (-13.04%)

65

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What is PRTA (Prothena plc) average time for price targets to be met?

On average it took 324.27 days on average for the stock forecasts to be realized with a an average price target met ratio 46.55

Which analyst has the current highest performing score on PRTA (Prothena plc) with a proven track record?

ANDREW PETERS

Which analyst has the most public recommendations on PRTA (Prothena plc)?

Andrew Peters has 2 price targets and 3 ratings on PRTA

Which analyst is the currently most bullish on PRTA (Prothena plc)?

Heather Behanna with highest potential upside - $70.5

Which analyst is the currently most reserved on PRTA (Prothena plc)?

Tazeen Ahmad with lowest potential downside - -$6.02

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