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PR

Prothena Corporation plc (PRTA)

NASDAQ • Healthcare

$9.3
-$0.23 (-2.5%)
Market open

Last close at September 9, 2026 at 20:00 UTC

Open$9.4
Previous Close$9.3
Day Range$9.22 - $9.5
Avg. Volume (3M)329.7K
Market Cap$486.8M
52 Week Range
$7.73$11.8
Next EarningsIn 56 daysNov 5, 2026

Metrics Over Time

Where the Money Goes

Q2 2026
Revenueeverything earned$1M100%
Gross Profitminus cost of goods$1M100%

Fundamentals & Financials

Revenue (TTM)
$54.5M
Net Income (TTM)
-$43.9M
EPS (TTM)
-$0.83
ROA (TTM)
-14.54%
Current Ratio
25.05

TTM is calculated as the sum of the four most recently completed quarters. This is a standard approach when monthly or real-time data is not available.

Earnings

+2.2%Q1 2026-$0.44
+293.5%Q2 2026$0.6
+17.9%Q3 2026-$0.32
Next

Nov 5

in 56 daysQ4 2026

% — EPS deviation from the forecast (beat / miss); quarters without a forecast show the reported EPS

View full earnings history

About Prothena Corporation plc

Prothena Corporation plc is a NASDAQ-listed biotechnology company focused on discovering and developing novel therapies for diseases caused by protein dysregulation. Founded in 2012 and based in Dublin, Prothena operates as a clinical-stage drug developer centered on neurodegenerative and other protein-misfolding disorders.

Name
Prothena Corporation plc
CEO
Gene G. Kinney
Website
www.prothena.com
Industry
Healthcare
Year Founded
2012
Employees
67

Today's Snapshot

AI-generated

Yesterday PRTA fell 2.5% to 9.30. Prothena management will discuss the company at an H.C. Wainwright investor conference.

Trading Volume

Below 10d avg (333.1K)

294.5K

vs S&P 500 Today

Underperforming Market

-2.04%

Updated: September 10, 2026 at 12:03 UTC

Technical Indicators

3 Buy2 Neutral3 Sell
PRTA shows a mild buy bias but with mixed signals around the price area and limited trend conviction. The MACD reads slightly positive while RSI and other momentum measures are largely neutral, and ADX indicates a weak trend. Medium-term moving averages offer some support as the price sits near several short- and mid-range averages, though the 200-day level and the pivot lie above current price as potential resistance. Volatility is moderate and OBV is constructive despite a negative cumulative value, suggesting selective buying. Technical takeaway: Modest buy bias with mixed moving-average structure and weak trend confirmation.
All signals
  • EMA (5 indicators)$9.18 - $9.46
    Sell
  • RSI (14)51.08
    Neutral
  • Stochastic %K (14, 3, 3)72.85
    Neutral
  • MACD Level (12, 26)0.17
    Buy

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