NASDAQ:PRTA Prothena (PRTA) Stock Price, News & Analysis $14.60 +0.16 (+1.11%) (As of 11/22/2024 ET) Add Compare Share Share Stock Analysis Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrends About Prothena Stock (NASDAQ:PRTA) 30 days 90 days 365 days Advanced Chart View Price History Chart DataSkip Price History Chart Get Prothena alerts:Sign Up Key Stats Today's Range$14.03▼$15.3350-Day Range$13.51▼$22.0252-Week Range$13.22▼$41.54Volume468,844 shsAverage Volume509,059 shsMarket Capitalization$785.63 millionP/E RatioN/ADividend YieldN/APrice Target$61.86Consensus RatingModerate Buy Company OverviewProthena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation in the United States. The company is involved in developing birtamimab, an investigational humanized antibody that is in Phase III clinical trial for the treatment of AL amyloidosis; Prasinezumab, a humanized monoclonal antibody, for the treatment of Parkinson's disease and other related synucleinopathies which is in Phase IIb clinical trial; NNC6019 that is in Phase lI clinical trial for the treatment of ATTR amyloidosis; and BMS-986446 and PRX012, which is in Phase I clinical trial for the treatment of Alzheimer's disease. Its discovery and preclinical programs include PRX123, a dual Aß-Tau vaccine for the treatment and prevention of Alzheimer's disease; and PRX019 for the treatment of neurogenerative diseases, as well as TDP-43 for the treatment of amyotrophic lateral sclerosis. Prothena Corporation plc has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target a-synuclein, including prasinezumab; and a collaboration agreement with Bristol-Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. The company was incorporated in 2012 and is based in Dublin, Ireland.Read More… I've got news for you… (Ad)Today, I’m doing something I thought I’d never do… Especially since I’m not normally a “swing for the fences” type of trader. But I’ve been quietly testing a new type of trade for a while now… And the returns are too good not to share with you. Take a look… I can’t guarantee results or against losses, but if you want to discover how I’ll target the triple return before the end of the weekwatch this FREE briefing with me and expert trader Graham Lindman Prothena Stock Analysis - MarketRank™See Top Rated MarketRank™ Stocks33rd Percentile Overall ScorePRTA MarketRank™: Prothena scored higher than 33% of companies evaluated by MarketBeat, and ranked 770th out of 956 stocks in the medical sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion3.4 / 5Analyst RatingModerate Buy Consensus RatingProthena has received a consensus rating of Moderate Buy. The company's average rating score is 2.71, and is based on 5 buy ratings, 2 hold ratings, and no sell ratings.Amount of Analyst CoverageProthena has only been the subject of 3 research reports in the past 90 days.Read more about Prothena's stock forecast and price target. Earnings and Valuation0.0 / 5Proj. Earnings GrowthDecreasing Earnings GrowthEarnings for Prothena are expected to decrease in the coming year, from ($2.25) to ($4.21) per share.Price to Earnings Ratio vs. the MarketThe P/E ratio of Prothena is -5.89, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Earnings Ratio vs. SectorThe P/E ratio of Prothena is -5.89, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Book Value per Share RatioProthena has a P/B Ratio of 1.47. P/B Ratios below 3 indicates that a company is reasonably valued with respect to its assets and liabilities.Read more about Prothena's valuation and earnings. Short Interest0.0 / 5Short Interest LevelBearish Percentage of Shares Shorted13.99% of the outstanding shares of Prothena have been sold short.Short Interest Ratio / Days to CoverProthena has a short interest ratio ("days to cover") of 16.3, which indicates bearish sentiment.Change versus previous monthShort interest in Prothena has recently increased by 10.90%, indicating that investor sentiment is decreasing significantly. Dividend0.0 / 5Dividend StrengthN/A Dividend YieldProthena does not currently pay a dividend.Dividend GrowthProthena does not have a long track record of dividend growth. Sustainability and ESGN/AEnvironmental ScoreN/A Percentage of Shares Shorted13.99% of the outstanding shares of Prothena have been sold short.Short Interest Ratio / Days to CoverProthena has a short interest ratio ("days to cover") of 16.3, which indicates bearish sentiment.Change versus previous monthShort interest in Prothena has recently increased by 10.90%, indicating that investor sentiment is decreasing significantly. News and Social Media1.9 / 5News Sentiment0.40 News SentimentProthena has a news sentiment score of 0.40. This score is calculated as an average of sentiment of articles about the company over the last seven days and ranges from 2 (good news) to -2 (bad news). This news sentiment score is similar to the average news sentiment of Medical companies.News Coverage This WeekMarketBeat has tracked 9 news articles for Prothena this week, compared to 3 articles on an average week.Search InterestOnly 3 people have searched for PRTA on MarketBeat in the last 30 days. This is a decrease of -57% compared to the previous 30 days. Company Ownership3.3 / 5Insider TradingN/A Insider Buying vs. Insider SellingIn the past three months, Prothena insiders have not sold or bought any company stock.Percentage Held by Insiders28.20% of the stock of Prothena is held by insiders. A high percentage of insider ownership can be a sign of company health.Percentage Held by Institutions97.08% of the stock of Prothena is held by institutions. High institutional ownership can be a signal of strong market trust in this company.Read more about Prothena's insider trading history. Receive PRTA Stock News and Ratings via Email Sign-up to receive the latest news and ratings for Prothena and its competitors with MarketBeat's FREE daily newsletter. Email Address PRTA Stock News HeadlinesProthena (NASDAQ:PRTA) Lowered to Sell Rating by StockNews.comNovember 23 at 1:25 AM | americanbankingnews.comProthena's SWOT analysis: stock poised for potential breakthroughs amid risksNovember 15, 2024 | investing.comEver heard of this 8-day bitcoin profit window? Did you know Bitcoin almost always soars higher during an 8-Day Profit Window? Most people have no clue… But for over a year now, some of our top students have had the chance to cash in with some incredible gains during this 8-day window.November 24, 2024 | DTI (Ad)Brokerages Set Prothena Co. plc (NASDAQ:PRTA) Target Price at $61.86November 15, 2024 | americanbankingnews.comProthena’s Strategic Advancements and Financial Strength Underpin Buy RatingNovember 14, 2024 | markets.businessinsider.comProthena’s Promising Therapeutic Developments and Positive Trial Outcomes Justify Buy RatingNovember 14, 2024 | markets.businessinsider.comProthena Reports Third Quarter 2024 Financial Results and Business HighlightsNovember 13, 2024 | finanznachrichten.deProthena Corporation Reports Q3 2024 Financial ResultsNovember 13, 2024 | markets.businessinsider.comSee More Headlines PRTA Stock Analysis - Frequently Asked Questions How have PRTA shares performed this year? Prothena's stock was trading at $36.34 at the start of the year. Since then, PRTA stock has decreased by 59.8% and is now trading at $14.60. View the best growth stocks for 2024 here. How were Prothena's earnings last quarter? Prothena Co. plc (NASDAQ:PRTA) released its earnings results on Tuesday, November, 12th. The biotechnology company reported ($1.10) earnings per share for the quarter, beating analysts' consensus estimates of ($1.18) by $0.08. The company's quarterly revenue was down 98.9% on a year-over-year basis. Who are Prothena's major shareholders? Prothena's top institutional investors include FMR LLC (15.00%), Wellington Management Group LLP (7.77%), State Street Corp (3.11%) and Geode Capital Management LLC (1.79%). Insiders that own company stock include Ecor1 Capital, Llc, Gene G Kinney, Tran Nguyen, Dennis J Selkoe, Richard T Collier, Lars Ekman, Michael J Malecek, Karin L Walker, Hideki Garren, Carol D Karp, Wagner M Zago and Brandon S Smith. View institutional ownership trends. How do I buy shares of Prothena? Shares of PRTA stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. Compare Top Brokerages Here. What other stocks do shareholders of Prothena own? Based on aggregate information from My MarketBeat watchlists, some other companies that Prothena investors own include Voyager Therapeutics (VYGR), American Water Works (AWK), Humana (HUM), Waste Connections (WCN), The RMR Group (RMR), DiamondRock Hospitality (DRH) and AUO (AUOTY). Company Calendar Last Earnings11/12/2024Today11/23/2024Fiscal Year End12/31/2024Next Earnings (Estimated)2/20/2025Get Stock AlertsIndustry, Sector and Symbol Stock ExchangeNASDAQ SectorMedical Industry Pharmaceutical preparations Sub-IndustryPharmaceutical Products Current SymbolNASDAQ:PRTA CUSIPN/A CIK1559053 Webwww.prothena.com Phone(531) 236-2500Fax353-1902-3510Employees173Year FoundedN/APrice Target and Rating Average Stock Price Target$61.86 High Stock Price Target$87.00 Low Stock Price Target$24.00 Potential Upside/Downside+323.7%Consensus RatingModerate Buy Rating Score (0-4)2.71 Research Coverage7 Analysts Profitability EPS (Most Recent Fiscal Year)($2.48) Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income$-147,030,000.00 Net Margins-98.86% Pretax Margin-105.02% Return on Equity-24.19% Return on Assets-20.59% Debt Debt-to-Equity RatioN/A Current Ratio11.52 Quick Ratio11.52 Sales & Book Value Annual Sales$91.37 million Price / Sales8.60 Cash FlowN/A Price / Cash FlowN/A Book Value$9.93 per share Price / Book1.47Miscellaneous Outstanding Shares53,810,000Free Float38,635,000Market Cap$785.63 million OptionableOptionable Beta0.16 2025 Gold Forecast: A Perfect Storm for DemandUnlock the timeless value of gold with our exclusive 2025 Gold Forecasting Report. Explore why gold remains the ultimate investment for safeguarding wealth against inflation, economic shifts, and global uncertainties. Whether you're planning for future generations or seeking a reliable asset in turbulent times, this report is your essential guide to making informed decisions.Get This Free Report This page (NASDAQ:PRTA) was last updated on 11/24/2024 by MarketBeat.com Staff From Our PartnersNew post-election stock warning from Wall StreetIf you’re holding U.S. stocks, it may be time to brace for impact. The S&P 500 crossed 6,000 for the first ...Chaikin Analytics | Sponsored[625,000% Gain] – Are You Ready for the Next Altcoin Boom?All of our key indicators are flashing the same signal: an altcoin season is fast approaching. And if you k...Crypto Swap Profits | SponsoredThe pin that pops the AI bubbleMy new documentary explores the background to this pattern and how and why I believe it will almost certainly ...Porter & Company | SponsoredPopular Stocks at Risk Under Trump—Are You Holding These?The Stocks Most At-Risk from Trump’s Victory Free e-book reveals sectors – and stocks within them – likely ...StockEarnings | SponsoredAre Your Retirement Savings Really Safe?What They Don’t Want You to Know About Your 401(k)The 2008-2010 crisis wiped out almost 50% of the value of retirement funds. If you knew it was coming, wouldn'...American Hartford Gold | SponsoredDonald Trump can’t save you from this crisisElon Musk: “This Is The Most Destructive Force In History” Elon Musk claims a terrifying new economic force...Wide Moat Research | SponsoredThe Biggest Post-Election Market Shift Ever?Our No. 1 stock for the rare "millionaire window" opening NOW According to Wall Street legend Whitney Tilso...Stansberry Research | SponsoredA “Thank You Gift” From Pres. Trump - GeniusTrump quietly left open an "off the books" wealth-protection loophole hidden in the 6,871 pages of the IRS Tax...Colonial Metals | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added five stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding Prothena Co. plc Please log in to your account or sign up in order to add this asset to your watchlist. Share Prothena With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. Advanced Stock Screeners and Research Tools Use our seven stock screeners to find suitable stocks. Stay informed with MarketBeat's real-time news. Export data to Excel for personal analysis. Sign in to your free account to enjoy these benefits In-depth profiles and analysis for 20,000 public companies. Real-time analyst ratings, insider transactions, earnings data, and more. Our daily ratings and market update email newsletter. Sign in to your free account to enjoy all that MarketBeat has to offer. Sign In Create Account Your Email Address: Email Address Required Your Password: Password Required Log In or Sign in with Facebook Sign in with Google Forgot your password? Your Email Address: Please enter your email address. Please enter a valid email address Choose a Password: Please enter your password. Your password must be at least 8 characters long and contain at least 1 number, 1 letter, and 1 special character. Create My Account (Free) or Sign in with Facebook Sign in with Google By creating a free account, you agree to our terms of service. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.