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+0.23%
-1.87%
+0.90%
+1.26%
PRTA
Prothena Corporation
$9.02
Strengths

Upgraded on attractively valued

Outperform the market
PRTA Price Performance
$9.94 (-9.26%)
$10.5 (-14.10%)
$9.76 (-7.58%)
$14.6 (-38.22%)
Overall standing based on market and analyst consensus.
Hover over the category for more information
Earnings
Earnings
Below analyst estimate
Rating
Rating
Upgraded on attractively valued
Momentum
Momentum
Has been gaining momentum
Activity
Activity
Future
Future
Outperform the market
PRTA Analysts opinion is negative and it remained unchanged from the past 3 months
Analysts perspectives on the stock desirability, trend direction and growth potential
PRTA Street Sentiment is unimpressive and have negative views on the near-term outlook
PRTA has Low risk level
Risk Indicators
Sentiments overview associated with events and the stock performance
Average key support and resistance price levels
Recent Upgrades and Downgrades
Jan 21, 2026
Upgrade
Buy
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Dec 02, 2025
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Citizens
Nov 08, 2025
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Buy
Roth
Oct 28, 2025
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Overweight
Piper Sandler
Oct 07, 2025
Reiterate
Buy
Roth
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PRTA
Prothena Corporation
Current Price
$9.02

PRTA Price Performance
$9.94 (-9.26%)
$10.5 (-14.10%)
$9.76 (-7.58%)
$14.6 (-38.22%)
PRTA Analysts Opinion
Overall standing per market and analyst expectations.
Hover over the category for more information
Earnings
Earnings
Below analyst estimate
Rating
Rating
Upgraded on attractively valued
Momentum
Momentum
Has been gaining momentum
Activity
Activity
Future
Future
Outperform the market
PRTA Analysts opinion is negative and it remained unchanged from the past 3 months
Analysts perspectives on the stock desirability, trend direction and growth potential
PRTA Street Sentiment is unimpressive and have negative views on the near-term outlook
PRTA has Low risk level
Risk Indicators
Average key support and resistance price levels
Overall Wall Street Rating
PRTA Stock IQ
Stock Insights
Strengths

Upgraded on attractively valued

Outperform the market
PRTA Latest Analysis
Prothena Q4 Earnings Meet Estimates Pipeline Progress in Focus. PRTA posts a narrower year-over-year Q4 loss. Revenues miss estimates as it outlines 2026 cash burn guidance and eyes key milestones from partners.
Fri Feb 20, 2026
Prothena GAAP EPS of -$0.40 beats by $0.16 revenue of $0.02M misses by $0.65M.
Thu Feb 19, 2026
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Disclaimer:
The Score performance whether actual or indicated by historical tests of strategies, is no guarantee of future performance or success. The results reflect performance of a strategy not historically offered to investors and does not represent returns that any investor actually attained.
The results reflect performance of a strategy not historically offered to investors and does not represent returns that any investor actually attained. The Readiness Indicators, Sentiment Indicators and total score are calculated by the retroactive application of a model constructed on the basis of historical data and based on assumptions integral to the model which may or may not be testable and are subject to losses. Active trading is generally not appropriate for someone of limited resources, limited invesment or trading experience, or low-risk tolerance. Your capital may be at risk.
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