PROTHENA CORP PLC (PRTA) Stock Technical Analysis

NASDAQ:PRTA • IE00B91XRN20

8.67 USD
+0.03 (+0.35%)
At close: Feb 27, 2026
9.09 USD
+0.42 (+4.84%)
After Hours: 2/27/2026, 8:27:41 PM
Technical Rating and Analysis

0

Taking everything into account, PRTA scores 0 out of 10 in our technical rating. PRTA scores bad on all fronts: it is a bad performer in the overall market and both the medium and short term pictures are negative.

  • Both the long and short term trends are negative. It is better to avoid buying stocks with negative trends.
  • When comparing the yearly performance of all stocks, PRTA is a bad performer in the overall market: 90% of all stocks are doing better.
  • PRTA is part of the Biotechnology industry. There are 520 other stocks in this industry, of which 71% are performing better than PRTA.
  • PRTA is currently trading in the middle of its 52 week range. The S&P500 Index however is currently trading near new highs, so PRTA is lagging the market.
  • In the last month PRTA has a been trading in the 8.20 - 9.59 range, which is quite wide. It is currently trading in the middle of this range, so some resistance may be found above.
Weekly and Daily overview Charts
PROTHENA CORP PLC / PRTA Weekly stock chart
PROTHENA CORP PLC / PRTA Daily stock chart
Setup Rating and Analysis

6

PRTA has a bad technical rating, but it does show a decent setup pattern. Prices have been consolidating lately and the volatility has been reduced. There is very little resistance above the current price.

Support and Resistance Analysis

8.12

9.81

When analyzing the support we can see 2 important areas.

  • Support @8.66 from a horizontal line in the weekly time frame.
  • Support @8.20 from a horizontal line in the daily time frame.

3 important resistance areas can be observed.

  • Resistance @8.67 from a trend line in the daily time frame.
  • A resistance zone ranging from 8.88 to 9.24. This zone is formed by a combination of multiple trend lines and important moving averages in multiple time frames.
  • A resistance zone ranging from 9.67 to 9.71. This zone is formed by a combination of multiple trend lines in multiple time frames.
Technical Indicator Signal Analysis

The Technical Rating and Setup analysis above combine different indicators and trends in different timeframes. Individual signals from indicators may give more contradictive signals and should always be interpreted in the more global context.

IndicatorValueSignalComment
ChartMill Long Term Trend IndicatorDOWNNEGATIVEThe long term trend for PRTA is down.
ChartMill Short Term Trend IndicatorDOWNNEGATIVEThe short term trend for PRTA is down.
ChartMill Relative Strength10.29NEGATIVEPRTA has a low relative strength, it was outperformed by 89.71% off all stocks on the market.
Simple Moving Average/SMA (20)DOWNNEGATIVEThe current price of PRTA is below a declining SMA(20).
Simple Moving Average/SMA (50)DOWNNEGATIVEThe current price of PRTA is below a declining SMA(50).
Simple Moving Average/SMA (200)UPPOSITIVEThe current price of PRTA is above the rising SMA(200).
Relative Strength Index/RSI (14)40.46NEUTRALThe RSI value for PRTA is a neutral value.
Moving Average Convergence Divergence/MACD (12, 26, 9)0NEGATIVEThe MACD value suggests PRTA has a negative trend.
Stochastics (14,3)38.35NEUTRALThe Stochastics value for PRTA is a neutral value.
Average True Range in percent/ATR (20)5.95HIGH VOLATILITYThe high ATR as a percentage value for PRTA suggests high volalility.
Average Directional Index/ADX (14)28.48POSITIVEThe high ADX value value for PRTA suggests a strong trend.
Chart- and CandleStick Pattern Analysis
Daily CandleStick Patterns
Bullish Engulfing (D)
Bullish Hammer (D)
Bearish Inverted Hammer (D)
Hanging Man (D)
Bullish Harami (D)
Doji (D)
Gravestone Doji (D)
DragonFly Doji (D)
Bearish Engulfing (D)
Bearish Shooting Star (D)
Bearish Harami (D)
Inside Bar (D)
Red Dog Reversal Down (D)
Red Dog Reversal Up (D)
Dark Cloud Cover (D)
Weekly CandleStick Patterns
Bullish Engulfing (W)
Bullish Hammer (W)
Bearish Inverted Hammer (W)
Hanging Man (W)
Bullish Harami (W)
Doji (W)
Gravestone Doji (W)
DragonFly Doji (W)
Bearish Engulfing (W)
Bearish Shooting Star (W)
Bearish Harami (W)
Inside Bar (W)
Dark Cloud Cover (W)
Daily Chart Patterns
Bull Flag
Bear Flag
Ascending Triangle (D)
Descending Triangle (D)
Symmetrical Triangle (D)
Squeeze
Channel (D)
Channel Up (D)
Channel Down (D)
Rising Wedge (D)
Falling Wedge (D)
Double Bottom (D)
Multiple Bottom (D)
Double Top (D)
Multiple Top (D)
Weekly Chart Patterns
Weekly Bull Flag
Weekly Bear Flag
Squeeze Week
Channel (W)
Double Bottom (W)
Multiple Bottom (W)
Double Top (W)
Multiple Top (W)
PROTHENA CORP PLC / PRTA Daily stock chart

PROTHENA CORP PLC

NASDAQ:PRTA (2/27/2026, 8:27:41 PM)

After market: 9.09 +0.42 (+4.84%)

8.67

+0.03 (+0.35%)

Chartmill TA Rating
Chartmill Setup Rating
Sector
GICS SectorHealth Care
GICS IndustryBiotechnology
Performance
% Chg0.35%
1 Week-3.88%
2 Weeks-2.03%
1 Month-4.3%
3 Month-19.35%
6 Month5.73%
12 Month-45.16%
2 Year-68.58%
3 Year-84.45%
5 Year-61.16%
10 Year-72.77%
15 YearN/A
Volatility
ATR(14)0.49
ATR(20)%5.95%
ATR Inc-42.23%
Range Today0.31
ADR(20)0.5
ADR(20)%5.82%
Trend & SMA
ST Trend
LT Trend
SMA(5)
SMA(10)
SMA(20)
SMA(50)
SMA(100)
SMA(200)
Relative Strength & Ranges
CRS10.29
3 months CRS16.43
6 months CRS59.96
Mansfield-1.12
10 Day High9.59
10 Day Low8.2
20 Day High9.59
20 Day Low8.2
52 Week High16.05
52 Week Low4.32
CS1 End8.66
CR1 Start8.67
Volume & EV
DER(3)-6.53%
DER(5)-5.4%
Volume439.30K
Volume Incr3.27%
Vol(5)439.98K
Vol(50)548.68K

PROTHENA CORP PLC / PRTA FAQ

What is the ChartMill technical rating of PROTHENA CORP PLC (PRTA) stock?

ChartMill assigns a technical rating of 0 / 10 to PRTA.


What is the trend direction for PRTA stock?

The current trend direction for PROTHENA CORP PLC (PRTA) is Bearish.


What is the RSI signal for PRTA stock?

PROTHENA CORP PLC (PRTA) has an RSI value of 40.4629. This indicates that the stock is currently neutral.


What is the buy/sell signal for PRTA stock?

The buy/sell signal for PROTHENA CORP PLC (PRTA) is sell as both the short term and long term trends are negative.


Can you provide the support and resistance levels for PROTHENA CORP PLC?

PROTHENA CORP PLC (PRTA) has a support level at 8.66 and a resistance level at 8.67. Check the full technical report for our detailed analysis of PRTA support and resistance levels.