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PR

Prothena Corporation plc (PRTA)

NASDAQ • Healthcare

$8.24
-$0.08 (-1.1%)
Market closed

Last close at September 16, 2026 at 20:00 UTC

Open$8.35
Day Range$8.2 - $8.5
Avg. Volume (3M)337.2K
Market Cap$431.3M
52 Week Range
$7.73$11.8
Next EarningsIn 50 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 50 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

PRTA closed 1.1% lower at 8.24, while its sector was flat.

Trading Volume

Above 10d avg 331.6K

387.6K

vs S&P 500 Today

Underperforming Market

-0.50%

Updated: September 16, 2026 at 20:01 UTC

Technical Indicators

1 Buy1 Neutral6 Sell
PRTA is trading below most moving averages at $8.24, and short-term momentum readings show clear pressure while trend strength remains weak. RSI near the low-30s and a deep negative CCI point to bearish momentum, while MACD is negative, reinforcing the downbeat internals. On-balance volume is strongly negative, suggesting distribution rather than accumulation, and ATR shows moderate volatility at roughly 4.7% of price. The price sits under the classic pivot near 8.50, underscoring resistance overhead. Technical takeaway: Sell — weak trend, negative momentum, and price beneath key moving averages support a bearish stance.
All signals
  • EMA (5 indicators)$8.91 - $9.40
    Sell
  • RSI (14)33.67
    Neutral
  • Stochastic %K (14, 3, 3)4.16
    Buy
  • MACD Level (12, 26)-0.10
    Sell

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