Prothena (PRTA) News Today $15.81 +0.68 (+4.49%) Closing price 02/28/2025 04:00 PM EasternExtended Trading$15.91 +0.10 (+0.63%) As of 02/28/2025 05:41 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Headlines Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrends All Sources Trusted Sources MarketBeat Benzinga Bloomberg GuruFocus MarketWatch Motley Fool NASDAQ PR Newswire Reuters Seeking Alpha TalkMarkets The Street TipRanks The Wall Street Journal Wall Street Zen Yahoo Finance Source Sentiment refers to the positivity or negativity of each headline according to our language processing algorithm. Sentiment All Sentiments Very Positive Positive Neutral Negative Very Negative Most Recent March 2025 February 2025 January 2025 December 2024 November 2024 October 2024 September 2024 August 2024 July 2024 June 2024 May 2024 April 2024 March 2024 February 2024 January 2024 December 2023 November 2023 October 2023 September 2023 August 2023 July 2023 June 2023 May 2023 April 2023 March 2023 February 2023 January 2023 December 2022 November 2022 October 2022 September 2022 August 2022 July 2022 June 2022 May 2022 April 2022 Time Period Prothena (NASDAQ:PRTA) Shares Up 6.5% - Should You Buy?Prothena (NASDAQ:PRTA) Stock Price Up 6.5% - Time to Buy?March 1 at 8:29 PM | marketbeat.comProthena (NASDAQ:PRTA) Given New $110.00 Price Target at Piper SandlerPiper Sandler increased their price target on Prothena from $94.00 to $110.00 and gave the company an "overweight" rating in a report on Wednesday.February 27 at 1:40 PM | marketbeat.comProthena price target raised to $110 from $94 at Piper SandlerFebruary 26, 2025 | markets.businessinsider.comProthena (NASDAQ:PRTA) Upgraded at StockNews.comStockNews.com upgraded shares of Prothena from a "sell" rating to a "hold" rating in a research note on Monday.February 25, 2025 | marketbeat.comQ4 Earnings Estimate for Prothena Issued By HC WainwrightFebruary 25, 2025 | americanbankingnews.comProthena (NASDAQ:PRTA) Upgraded by StockNews.com to Hold RatingFebruary 25, 2025 | americanbankingnews.comHC Wainwright Reaffirms Buy Rating for Prothena (NASDAQ:PRTA)February 24, 2025 | americanbankingnews.comWhat is HC Wainwright's Estimate for Prothena Q4 Earnings?Prothena Co. plc (NASDAQ:PRTA - Free Report) - Equities research analysts at HC Wainwright issued their Q4 2025 earnings per share estimates for shares of Prothena in a report released on Friday, February 21st. HC Wainwright analyst A. Fein anticipates that the biotechnology company will earn ($0February 24, 2025 | marketbeat.comChardan Capital Reaffirms Buy Rating for Prothena (NASDAQ:PRTA)February 24, 2025 | americanbankingnews.comCantor Fitzgerald Reaffirms "Overweight" Rating for Prothena (NASDAQ:PRTA)February 23, 2025 | americanbankingnews.comProthena (NASDAQ:PRTA) Price Target Lowered to $20.00 at Royal Bank of CanadaFebruary 23, 2025 | americanbankingnews.comProthena Reports 2024 Financial Results and 2025 OutlookFebruary 22, 2025 | tipranks.comProthena’s Balanced Earnings Call Highlights Growth and ChallengesFebruary 22, 2025 | tipranks.comRoyal Bank of Canada Cuts Prothena (NASDAQ:PRTA) Price Target to $20.00Royal Bank of Canada reduced their target price on Prothena from $24.00 to $20.00 and set a "sector perform" rating on the stock in a research note on Friday.February 22, 2025 | marketbeat.comProthena's (PRTA) "Overweight" Rating Reaffirmed at Cantor FitzgeraldCantor Fitzgerald reaffirmed an "overweight" rating on shares of Prothena in a research report on Friday.February 22, 2025 | marketbeat.comHC Wainwright Reaffirms "Buy" Rating for Prothena (NASDAQ:PRTA)HC Wainwright reissued a "buy" rating and issued a $48.00 price objective on shares of Prothena in a research note on Friday.February 22, 2025 | marketbeat.comProthena's (PRTA) "Buy" Rating Reaffirmed at Chardan CapitalChardan Capital reiterated a "buy" rating and set a $40.00 target price on shares of Prothena in a research note on Friday.February 22, 2025 | marketbeat.comAnalysts Are Bullish on These Healthcare Stocks: Prothena (PRTA), Integer Holdings (ITGR)February 22, 2025 | markets.businessinsider.comProthena Reports Fourth Quarter and Full Year 2024 Financial Results, and Provides Financial Guidance and Business HighlightsFebruary 21, 2025 | uk.finance.yahoo.comAnalysts’ Opinions Are Mixed on These Healthcare Stocks: Insulet (PODD), Prothena (PRTA) and Travere Therapeutics (TVTX)February 21, 2025 | markets.businessinsider.comProthena price target lowered to $20 from $24 at RBC CapitalFebruary 21, 2025 | markets.businessinsider.comProthena Corporation plc (NASDAQ:PRTA) Q4 2024 Earnings Call TranscriptFebruary 21, 2025 | msn.comProthena (NASDAQ:PRTA) Issues Earnings Results, Misses Estimates By $0.06 EPSProthena (NASDAQ:PRTA - Get Free Report) released its quarterly earnings data on Thursday. The biotechnology company reported ($1.08) EPS for the quarter, missing the consensus estimate of ($1.02) by ($0.06). Prothena had a negative net margin of 98.86% and a negative return on equity of 24.19%.February 21, 2025 | marketbeat.comProthena Corp PLC (PRTA) Q4 2024 Earnings Call Highlights: Strong Financial Position Amidst ...February 21, 2025 | gurufocus.comProthena outlines potential multi-billion dollar opportunity with birtamimab launch by 2026February 21, 2025 | msn.comJMP Securities Keeps Their Buy Rating on Prothena (PRTA)February 21, 2025 | markets.businessinsider.comQ4 2024 Prothena Corporation PLC Earnings Call TranscriptFebruary 21, 2025 | gurufocus.comProthena Corporation plc (PRTA) Q4 2024 Earnings Call TranscriptFebruary 20, 2025 | seekingalpha.comProthena Corporation plc 2024 Q4 - Results - Earnings Call PresentationFebruary 20, 2025 | seekingalpha.comProthena (NASDAQ:PRTA) Trading Up 6% - Here's WhyProthena (NASDAQ:PRTA) Stock Price Up 6% - Still a Buy?February 20, 2025 | marketbeat.comProthena Co. plc (NASDAQ:PRTA) Receives Consensus Rating of "Moderate Buy" from AnalystsShares of Prothena Co. plc (NASDAQ:PRTA - Get Free Report) have been assigned an average rating of "Moderate Buy" from the seven brokerages that are currently covering the firm, MarketBeat reports. Two investment analysts have rated the stock with a hold recommendation and five have assigned a buyFebruary 20, 2025 | marketbeat.comKuehn Law Encourages Investors of Prothena Corporation PLC to Contact Law FirmFebruary 17, 2025 | gurufocus.comKuehn Law Encourages Investors of Prothena Corporation PLC to Contact Law FirmFebruary 17, 2025 | globenewswire.comProthena (PRTA) to Release Quarterly Earnings on ThursdayProthena (NASDAQ:PRTA) will be releasing earnings before the market opens on Thursday, February 20, Financial Modeling Prep reports.February 13, 2025 | marketbeat.comFocused Wealth Management Inc Buys Shares of 32,129 Prothena Co. plc (NASDAQ:PRTA)Focused Wealth Management Inc bought a new stake in shares of Prothena Co. plc (NASDAQ:PRTA - Free Report) during the fourth quarter, according to the company in its most recent disclosure with the Securities & Exchange Commission. The institutional investor bought 32,129 shares of the biotechFebruary 9, 2025 | marketbeat.comProthena (NASDAQ:PRTA) Stock Price Expected to Rise, Oppenheimer Analyst SaysOppenheimer increased their price target on shares of Prothena from $58.00 to $62.00 and gave the company an "outperform" rating in a research report on Friday.February 7, 2025 | marketbeat.comProthena price target raised to $62 from $58 at OppenheimerFebruary 7, 2025 | markets.businessinsider.comFurther weakness as Prothena (NASDAQ:PRTA) drops 16% this week, taking three-year losses to 61%February 4, 2025 | finance.yahoo.comSG Americas Securities LLC Increases Holdings in Prothena Co. plc (NASDAQ:PRTA)SG Americas Securities LLC grew its holdings in Prothena Co. plc (NASDAQ:PRTA - Free Report) by 167.0% during the fourth quarter, according to the company in its most recent filing with the SEC. The fund owned 37,612 shares of the biotechnology company's stock after acquiring an additional 23,525 sFebruary 1, 2025 | marketbeat.comKuehn Law Encourages Investors of Prothena Corporation PLC to Contact Law FirmJanuary 30, 2025 | markets.businessinsider.comProthena (NASDAQ:PRTA) Trading Down 4.8% - Should You Sell?Prothena (NASDAQ:PRTA) Stock Price Down 4.8% - Here's What HappenedJanuary 30, 2025 | marketbeat.comZacks Research Issues Positive Outlook for Prothena EarningsProthena Co. plc (NASDAQ:PRTA - Free Report) - Equities research analysts at Zacks Research raised their Q2 2025 earnings estimates for shares of Prothena in a research note issued on Monday, January 27th. Zacks Research analyst E. Bagri now forecasts that the biotechnology company will post earnJanuary 30, 2025 | marketbeat.comDuncan Williams Asset Management LLC Purchases 20,450 Shares of Prothena Co. plc (NASDAQ:PRTA)Duncan Williams Asset Management LLC lifted its position in shares of Prothena Co. plc (NASDAQ:PRTA - Free Report) by 41.9% during the fourth quarter, according to its most recent filing with the Securities and Exchange Commission. The institutional investor owned 69,199 shares of the biotechnologJanuary 26, 2025 | marketbeat.comProthena Co. plc (NASDAQ:PRTA) Receives Consensus Recommendation of "Moderate Buy" from AnalystsShares of Prothena Co. plc (NASDAQ:PRTA - Get Free Report) have been assigned an average rating of "Moderate Buy" from the seven ratings firms that are currently covering the stock, MarketBeat Ratings reports. Two investment analysts have rated the stock with a hold recommendation and five have givJanuary 26, 2025 | marketbeat.comProthena (NASDAQ:PRTA) Trading 6.7% Higher - Here's WhyProthena (NASDAQ:PRTA) Shares Up 6.7% - Still a Buy?January 23, 2025 | marketbeat.comCantor Fitzgerald Comments on Prothena FY2025 EarningsProthena Co. plc (NASDAQ:PRTA - Free Report) - Equities research analysts at Cantor Fitzgerald issued their FY2025 earnings estimates for Prothena in a note issued to investors on Tuesday, January 21st. Cantor Fitzgerald analyst C. Duncan anticipates that the biotechnology company will post earniJanuary 22, 2025 | marketbeat.comHennion & Walsh Asset Management Inc. Buys Shares of 52,284 Prothena Co. plc (NASDAQ:PRTA)Hennion & Walsh Asset Management Inc. purchased a new position in shares of Prothena Co. plc (NASDAQ:PRTA - Free Report) in the 4th quarter, according to the company in its most recent 13F filing with the Securities and Exchange Commission (SEC). The institutional investor purchased 52,284 sharesJanuary 20, 2025 | marketbeat.comJPMorgan Chase & Co. Has $3.35 Million Stock Position in Prothena Co. plc (NASDAQ:PRTA)JPMorgan Chase & Co. lessened its holdings in shares of Prothena Co. plc (NASDAQ:PRTA - Free Report) by 32.4% during the third quarter, according to the company in its most recent Form 13F filing with the SEC. The firm owned 199,986 shares of the biotechnology company's stock after selling 95,979 sJanuary 20, 2025 | marketbeat.comProthena (NASDAQ:PRTA) Shares Up 6.8% - Time to Buy?Prothena (NASDAQ:PRTA) Trading 6.8% Higher - Time to Buy?January 17, 2025 | marketbeat.comProthena Co. plc (NASDAQ:PRTA) Shares Purchased by Barclays PLCBarclays PLC raised its holdings in Prothena Co. plc (NASDAQ:PRTA - Free Report) by 110.2% during the third quarter, according to the company in its most recent Form 13F filing with the SEC. The firm owned 95,222 shares of the biotechnology company's stock after purchasing an additional 49,916 sharJanuary 12, 2025 | marketbeat.com Get Prothena News Delivered to You Automatically Sign up to receive the latest news and ratings for PRTA and its competitors with MarketBeat's FREE daily newsletter. Email Address PRTA Media Mentions By Week PRTA Media Sentiment Learn about the media sentiment score. Each headline receives a score ranging from 2 (good news) to -2 (bad news). Our company news sentiment scores track the average news sentiment of articles about each company over the most recent 7 days in order to identify companies that are receiving positive press. PRTA News Sentiment▼0.660.71▲Average Medical News Sentiment PRTA News Coverage Learn about the media coverage comparison. We track news headlines from hundreds of news outlets and tag them by company. This chart compares the number of articles about this company in the last seven days compared with the average number of articles about this company on a typical week. PRTA Articles This Week▼144▲PRTA Articles Average Week Get Prothena News Delivered to You Automatically Sign up to receive the latest news and ratings for PRTA and its competitors with MarketBeat's FREE daily newsletter. 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