Overview Market News Market Videos Currencies International Treasury & Bonds Search InvestCenter Recent Quotes View Full List My Watchlist Create Watchlist Indicators Dow Jones Industrial Average NASDAQ Composite Standard & Poors 500 NYSE COMPOSITE INDX Gold Crude Oil PROTHENA CORP (NQ: PRTA) 10.00 USD -0.55 (-5.21%) Official Closing Price / Updated: 8:10 PM EDT, May 22, 2013 / Add to My Watchlist View: Quote Overview Detailed Quote Charting Options Historical Prices News All News Press Releases Related Stories Blogs Podcasts Price and Volume Detailed Quote Intraday 1 Week 1 Month 3 Month 1 Year Compare to: None S&P 500 Nasdaq NYSE AMEX Russell 2000 Basic Materials Conglomerates Consumer Goods Financial Healthcare Industrial Goods Services Technology Utilities Volume 0 Open 10.55 Bid (Size) 9.650 (3000) Ask (Size) 10.52 (100) Prev. Close 10.55 Today's Range 10.00 - 10.90 52wk Range 5.640 - 10.90 Shares Outstanding N/A Dividend Yield N/A Top News More News LifeSci Advisors Initiates Coverage of Prothena Corporation May 15, 2013 from Marketwired News Releases Prothena Reports First Quarter Financial Results May 14, 2013 Phase 1 Clinical Trial Initiated in April for NEOD001 in AL Amyloidosis Patients Read More from GlobeNewswire News Releases More News Read More First Patient Dosed in Phase I Study of Prothena's Therapeutic Antibody for Treatment of AL Amyloidosis April 23, 2013 from GlobeNewswire News Releases Prothena Corp (PRTA) Widens Q4 Loss to 82c/Share March 28, 2013 from StreetInsider.com News Articles Prothena Reports Fourth Quarter and Full Year 2012 Financial Results and Provides Research and Development Update March 28, 2013 from GlobeNewswire News Releases Prothena Announces Appointments of Chief Medical Officer and Chief Financial Officer March 25, 2013 from GlobeNewswire News Releases Prothena to Report Fourth Quarter and Full Year 2012 Financial Results and Host Webcast and Conference Call on March 28, 2013 March 21, 2013 from GlobeNewswire News Releases Prothena Announces Appointment of Biotech Pioneer to Board of Directors March 19, 2013 from GlobeNewswire News Releases Prothena Achieves Orphan Drug Status in EU for Lead Program NEOD001 February 27, 2013 from GlobeNewswire News Releases Video Interview: Dr. Dale Schenk, Chief Executive Officer, Prothena Corporation plc [PRTA] February 19, 2013 from GlobeNewswire News Releases Stock Market XML and JSON Data API provided by FinancialContent Services, Inc. Nasdaq quotes delayed at least 15 minutes, all others at least 20 minutes. Markets are closed on certain holidays. Stock Market Holiday List By accessing this page, you agree to the following Privacy Policy and Terms and Conditions. Press Release Service provided by PRConnect. Stock quotes supplied by Telekurs USA Postage Rates Bots go here