NASDAQ:PRTA Prothena (PRTA) Stock Price, News & Analysis $17.36 -0.72 (-3.98%) (As of 11/12/2024 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$17.23▼$18.0050-Day Range$15.30▼$22.1152-Week Range$15.30▼$41.54Volume374,567 shsAverage Volume583,170 shsMarket Capitalization$933.62 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… War on Elon Escalates… (Ad)A radical, potentially game-changing technology that threatens to destroy the trillion-dollar, “green energy” grift of the elites. And yet, while it threatens their wealth and power, it could be transformational for both the U.S. economy and your wealth.One company holds a near-total monopoly on it. Prothena Stock Analysis - MarketRank™See Top Rated MarketRank™ Stocks36th Percentile Overall ScorePRTA MarketRank™: Prothena scored higher than 36% of companies evaluated by MarketBeat, and ranked 794th out of 986 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 4 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 ($2.34) to ($4.52) per share.Price to Earnings Ratio vs. the MarketThe P/E ratio of Prothena is -17.36, 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 -17.36, 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 1.66. 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 Shorted14.00% 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 Shorted14.00% 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 Media2.0 / 5News Sentiment0.65 News SentimentProthena has a news sentiment score of 0.65. 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 6 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.MarketBeat FollowsOnly 1 people have added Prothena to their MarketBeat watchlist in the last 30 days. This is a decrease of -67% 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 (PRTA) Set to Announce Quarterly Earnings on TuesdayNovember 10 at 3:52 AM | americanbankingnews.comProthena to Report Third Quarter 2024 Financial Results on November 12November 6, 2024 | finance.yahoo.comThe Crypto That’s Making Wall Street SweatThe Crypto Wall Street Is Desperate to Hide It's happening now, right under everyone's radar. Big tech giants are quietly integrating it. Venture capitalists are scrambling to invest.November 13, 2024 | Crypto 101 Media (Ad)Prothena (PRTA) Gets a Buy from OppenheimerOctober 30, 2024 | markets.businessinsider.comOptimistic Buy Rating for Prothena Driven by Clinical Updates and Strategic CollaborationsOctober 28, 2024 | markets.businessinsider.comState Street Corp's Strategic Reduction in Prothena Corp PLC HoldingsOctober 19, 2024 | finance.yahoo.comProthena: Delays And Data Uncertainty Undermine Case For Investing (Downgrade)October 18, 2024 | seekingalpha.comMaintaining Hold on Prothena Amid Executive Changes and Clinical Validation NeedsOctober 2, 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 shares have decreased by 52.2% and is now trading at $17.36. View the best growth stocks for 2024 here. How were Prothena's earnings last quarter? Prothena Co. plc (NASDAQ:PRTA) posted its quarterly earnings results on Thursday, August, 8th. The biotechnology company reported $1.22 earnings per share for the quarter, topping analysts' consensus estimates of ($1.01) by $2.23. The business's revenue was up 3184.7% compared to the same quarter last year. Who are Prothena's major shareholders? Prothena's top institutional shareholders include Charles Schwab Investment Management Inc. (0.60%), Pinnacle Associates Ltd. (0.23%), Connor Clark & Lunn Investment Management Ltd. (0.23%) and Algert Global LLC (0.14%). 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 Earnings8/08/2024Today11/12/2024Next Earnings (Confirmed)11/12/2024Fiscal Year End12/31/2024Get 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+256.3%Consensus RatingModerate Buy Rating Score (0-4)2.71 Research Coverage7 Analysts Profitability EPS (Most Recent Fiscal Year)($1.00) Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income$-147,030,000.00 Net Margins-23.44% Pretax Margin-28.26% Return on Equity-9.00% Return on Assets-7.51% Debt Debt-to-Equity RatioN/A Current Ratio12.54 Quick Ratio12.54 Sales & Book Value Annual Sales$217.25 million Price / Sales4.30 Cash FlowN/A Price / Cash FlowN/A Book Value$10.46 per share Price / Book1.66Miscellaneous Outstanding Shares53,780,000Free Float38,614,000Market Cap$933.62 million OptionableOptionable Beta0.16 7 Stocks That Could Be Bigger Than Tesla, Nvidia, and GoogleGrowth stocks offer a lot of bang for your buck, and we've got the next upcoming superstars to strongly consider for your portfolio.Get This Free Report This page (NASDAQ:PRTA) was last updated on 11/13/2024 by MarketBeat.com Staff From Our PartnersBill Gates’s Next Big AI Bet: StargateIn February 2016… when almost nobody was talking about artificial intelligence…. 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