[[ type === 'moc' ? 'MARKET ON CLOSE' : 'FREE WEBINAR' ]]
[[ timeLabel ]] WATCH LIVE:
Your browser of choice has not been tested for use with Barchart.com. If you have issues, please download one of the browsers listed here.
Get your Portfolio automatically emailed to you up to 4 times a day with Barchart Premier. FREE 30 Day Trial
Stocks | Futures | Watchlist | News | More
or
Faster, Cleaner, Better.

Prothena Corp (PRTA)

Prothena Corp (PRTA)
[[ item.lastPrice ]] [[ item.priceChange ]] ([[ item.percentChange ]]) [[ item.tradeTime ]] [NASDAQ]
[[ item.bidPrice ]] x [[ item.bidSize ]] [[ item.askPrice ]] x [[ item.askSize ]]
[[ session ]] by (Cboe BZX)
[[ item.lastPrice ]] [[ item.priceChange ]] ([[ item.percentChange ]]) [[ item.tradeTime ]] [NASDAQ]
[[ item.bidPrice ]] x [[ item.bidSize ]] [[ item.askPrice ]] x [[ item.askSize ]]
[[ session ]] [[ item.lastPriceExt ]] [[ item.priceChangeExt ]] ([[ item.percentChangeExt ]]) [[ item.tradeTimeExt ]]
Stock Comparison for [[ item.sessionDateDisplayLong ]]
Enter Symbols:

Results

download Want to compare other data? Select Fields
Price Information  
Exchange NASDAQ NASDAQ NASDAQ    
Open 11.04 36.73 13.46    
High 11.14 37.88 14.56    
Low 10.64 34.41 13.11    
Latest 10.64 35.59 14.50    
Change -0.42 -1.03 +1.00    
% Change -3.80% -2.81% +7.41%    
Volume 516,300 199,200 323,300    
20-Day Average Volume 393,355 270,155 173,835    
Previous Close 11.06 36.62 13.50    
Industry Medical - Biomedical Medical - Biomedical Medical - Biomedical    
Has Options Yes Yes Yes    
Technicals  
20-Day Moving Average 10.69 31.17 13.54    
20-Day Raw Stochastic 47.46% 77.60% 97.49%    
20-Day Relative Strength 54.71 69.89 60.91    
Weighted Alpha +49.22 +347.82 +81.81    
Today's Opinion 80% Buy 100% Buy 100% Buy    
Previous Opinion 88% Buy 100% Buy 100% Buy    
Last Month's Opinion 56% Buy 100% Buy 100% Buy    
Performance  
5-Days  
%Chg -1.02% since 04/24/26 +6.78% since 04/24/26 +14.81% since 04/24/26    
Low 10.64 on 05/01/26 31.61 on 04/28/26 12.41 on 04/29/26    
High 11.57 on 04/28/26 39.10 on 04/30/26 14.56 on 05/01/26    
1-Month  
%Chg +6.08% since 04/01/26 +43.10% since 04/01/26 +7.57% since 04/01/26    
Low 9.51 on 04/02/26 23.43 on 04/07/26 12.17 on 04/24/26    
High 11.57 on 04/28/26 39.10 on 04/30/26 14.56 on 05/01/26    
3-Month  
%Chg +20.77% since 01/30/26 +138.06% since 01/30/26 +26.75% since 01/30/26    
Low 8.19 on 02/20/26 12.85 on 02/05/26 9.79 on 02/05/26    
High 11.57 on 04/28/26 39.10 on 04/30/26 14.56 on 05/01/26    
6-Month  
%Chg -1.02% since 10/31/25 +217.77% since 10/31/25 +108.63% since 10/31/25    
Low 8.19 on 02/20/26 7.15 on 12/03/25 6.09 on 11/06/25    
High 11.57 on 04/28/26 39.10 on 04/30/26 14.56 on 05/01/26    
Key Statistics  
Market Capitalization, $K 572,783 589,655 562,904    
Shares Outstanding, K 53,833 16,568 38,821    
Annual Sales 9,680,000 102,480,000 25,420,000    
Annual Net Income -244,090,000 -191,090,000 -143,750,000    
Last Quarter Sales 20,000 11,650,000 1,300,000    
Last Quarter Net Income -21,590,000 -46,760,000 -39,160,000    
60-Month Beta -0.23 1.63 -0.09    
Per-Share Information  
Most Recent Earnings -0.44 on 02/19/26 -6.70 on 11/06/25 -0.94 on 02/26/26    
Earnings Date 05/14/26 05/14/26 05/14/26    
Most Recent Dividend N/A N/A N/A    
Next Ex-Dividends Date N/A N/A N/A    
Ratios  
Price/Earnings ttm 0.00 0.00 0.00    
Want to use this as
your default charts setting?
Save this setup as a Chart Templates
Switch the Market flag
for targeted data from your country of choice.
Open the menu and switch the
Market flag for targeted data from your country of choice.
Want Streaming Chart Updates?
Switch your Site Preferences
to use Interactive Charts
Need More Chart Options?
Right-click on the chart to open the Interactive Chart menu.
Use your up/down arrows to move through the symbols.