loading
Prothena Corporation Plc stock is traded at $7.43, with a volume of 1.66M. It is up +4.65% in the last 24 hours and down -27.58% over the past month. Prothena Corp PLC is a clinical biotechnology company that focuses on protein dysregulation and a pipeline of investigational therapeutics with the potential to change the course of devastating neurodegenerative and rare and peripheral amyloid diseases. The company's clinical pipeline of antibody-based product candidates targets a range of indications, including Amyloid Light-chain (AL) amyloidosis (NEOD001), Parkinson's disease and other related synucleinopathies (PRX002), and inflammatory diseases, including ATTR amyloidosis [Coramitug (PRX004)], Alzheimer's disease (PRX123), Neurodegeneration (PRXPRX019), and Others.
See More
Previous Close:
$7.10
Open:
$7.02
24h Volume:
1.66M
Relative Volume:
2.26
Market Cap:
$457.53M
Revenue:
$217.25M
Net Income/Loss:
$-50.92M
P/E Ratio:
-7.43
EPS:
-1
Net Cash Flow:
$-100.85M
1W Performance:
-12.59%
1M Performance:
-27.58%
6M Performance:
-58.02%
1Y Performance:
-66.23%
1-Day Range:
Value
$6.92
$8.08
1-Week Range:
Value
$6.92
$8.7996
52-Week Range:
Value
$6.92
$25.42

Prothena Corporation Plc Stock (PRTA) Company Profile

Name
Name
Prothena Corporation Plc
Name
Phone
011-353-1-236-2500
Name
Address
77 SIR JOHN ROGERSON'S QUAY, BLOCK C, DUBLIN 2
Name
Employee
163
Name
Twitter
@ProthenaCorp
Name
Next Earnings Date
2025-02-18
Name
Latest SEC Filings
Name
PRTA's Discussions on Twitter

Compare PRTA with other stocks

Stocks Price Market Cap Revenue Net Income Cash Flow EPS
Biotechnology icon
PRTA
Prothena Corporation Plc
7.43 457.53M 217.25M -50.92M -100.85M -1.00
Biotechnology icon
VRTX
Vertex Pharmaceuticals Inc
424.99 128.84B 11.10B -988.90M -1.26B -3.92
Biotechnology icon
REGN
Regeneron Pharmaceuticals Inc
527.78 65.38B 14.09B 4.50B 2.96B 39.28
Biotechnology icon
ARGX
Argen X Se Adr
549.65 39.67B 2.19B 833.04M -1.28B 12.71
Biotechnology icon
ALNY
Alnylam Pharmaceuticals Inc
251.15 33.82B 2.35B -269.70M -75.39M -2.09
Biotechnology icon
ONC
Beigene Ltd Adr
231.99 27.60B 3.81B -644.79M -669.77M -6.24

Prothena Corporation Plc Stock (PRTA) Upgrades & Downgrades

Date Action Analyst Rating Change
Dec-20-24 Initiated Chardan Capital Markets Buy
Jan-30-24 Downgrade BofA Securities Buy → Neutral
Dec-12-23 Initiated Deutsche Bank Buy
Apr-24-23 Initiated SVB Securities Outperform
Jan-27-23 Initiated Piper Sandler Overweight
Nov-04-22 Downgrade RBC Capital Mkts Outperform → Sector Perform
Sep-28-22 Upgrade BofA Securities Neutral → Buy
Nov-19-21 Initiated JMP Securities Mkt Outperform
Jun-18-21 Upgrade BofA Securities Underperform → Neutral
Jun-08-21 Reiterated Oppenheimer Outperform
May-26-21 Initiated Citigroup Buy
Feb-26-21 Upgrade RBC Capital Mkts Sector Perform → Outperform
Feb-12-21 Upgrade Jefferies Hold → Buy
Feb-02-21 Upgrade BTIG Research Neutral → Buy
Dec-07-20 Initiated H.C. Wainwright Buy
Jul-09-20 Upgrade Oppenheimer Perform → Outperform
Nov-19-19 Upgrade Evercore ISI In-line → Outperform
May-21-18 Downgrade Barclays Equal Weight → Underweight
Apr-23-18 Downgrade Jefferies Buy → Hold
Apr-05-18 Reiterated Barclays Overweight
Nov-20-17 Downgrade Wedbush Outperform → Neutral
Sep-29-17 Reiterated BTIG Research Buy
Sep-15-17 Initiated RBC Capital Mkts Outperform
Aug-17-17 Initiated Evercore ISI Outperform
Jul-11-17 Initiated Jefferies Buy
Apr-12-17 Initiated Cantor Fitzgerald Overweight
Apr-12-17 Initiated Piper Jaffray Overweight
Mar-02-17 Initiated Instinet Buy
Dec-21-16 Initiated SunTrust Buy
Nov-03-16 Initiated Deutsche Bank Buy
Aug-04-16 Reiterated Barclays Overweight
May-13-16 Initiated Barclays Overweight
Feb-19-16 Reiterated Wedbush Outperform
Jan-21-16 Initiated Credit Suisse Outperform
View All

Prothena Corporation Plc Stock (PRTA) Latest News

pulisher
05:37 AM

Prothena Co. plc (NASDAQ:PRTA) Shares Bought by Dimensional Fund Advisors LP - Defense World

05:37 AM
pulisher
May 09, 2025

Prothena Corp (PRTA) Sees Price Target Reduction by HC Wainwrigh - GuruFocus

May 09, 2025
pulisher
May 09, 2025

Prothena (PRTA) Price Target Reduced by H.C. Wainwright | PRTA S - GuruFocus

May 09, 2025
pulisher
May 09, 2025

Prothena Corp (PRTA) Sees Price Target Reduction by HC Wainwright & Co. | PRTA Stock News - GuruFocus

May 09, 2025
pulisher
May 09, 2025

Prothena Q1 Earnings Miss Estimates, Focus on Key Readouts in 2025 - Yahoo Finance

May 09, 2025
pulisher
May 09, 2025

Prothena (PRTA) Price Target Adjusted, Outlook Remains Positive - GuruFocus

May 09, 2025
pulisher
May 09, 2025

Prothena Corp (PRTA) Sees Price Target Adjusted by JMP Securities | PRTA Stock News - GuruFocus

May 09, 2025
pulisher
May 09, 2025

Prothena Corp (PRTA) Receives Steady "Buy" Rating from Chardan Capital | PRTA Stock News - GuruFocus

May 09, 2025
pulisher
May 09, 2025

RBC Trims Price Target on Prothena to $18 From $20, Keeps Sector Perform, Speculative Risk - marketscreener.com

May 09, 2025
pulisher
May 09, 2025

Prothena (PRTA) Price Target Reduced by H.C. Wainwright | PRTA Stock News - GuruFocus

May 09, 2025
pulisher
May 09, 2025

Is Prothena Corporation plc (PRTA) the Low Risk High Reward Stock Set to Triple by 2030? - Yahoo Finance

May 09, 2025
pulisher
May 09, 2025

Prothena stock price target cut to $78 by Citizens JMP - Investing.com

May 09, 2025
pulisher
May 09, 2025

Beyond The Numbers: 7 Analysts Discuss Prothena Corp Stock - Benzinga

May 09, 2025
pulisher
May 09, 2025

Top 3 Health Care Stocks That Are Preparing To Pump This Quarter - Benzinga

May 09, 2025
pulisher
May 09, 2025

Prothena Co. plc (NASDAQ:PRTA) Receives $55.00 Consensus Price Target from Analysts - Defense World

May 09, 2025
pulisher
May 08, 2025

10 Low Risk High Reward Stocks Set to Triple by 2030 - Insider Monkey

May 08, 2025
pulisher
May 08, 2025

Prothena Reports First Quarter 2025 Financial Results and Business Highlights - BioSpace

May 08, 2025
pulisher
May 08, 2025

Prothena (PRTA) Reports Q1 Loss, Misses Revenue Estimates - Yahoo Finance

May 08, 2025
pulisher
May 08, 2025

Prothena (PRTA) Expects Key Clinical Milestones and Financial Outlook for 2025 | PRTA Stock News - GuruFocus

May 08, 2025
pulisher
May 08, 2025

Prothena Corporation PLC reports results for the quarter ended March 31Earnings Summary - TradingView

May 08, 2025
pulisher
May 08, 2025

Prothena: Q1 Earnings Snapshot - marketscreener.com

May 08, 2025
pulisher
May 08, 2025

Prothena Corp PLC Q1 2025 Earnings: EPS of -$1.12 Misses Estimates, Revenue Falls Short at $2.8 Million - GuruFocus

May 08, 2025
pulisher
May 07, 2025

U.S. Transthyretin Amyloidosis Treatment Market Set to Witness - openPR.com

May 07, 2025
pulisher
May 06, 2025

Prothena Corporation PLC expected to post a loss of 97 cents a shareEarnings Preview - TradingView

May 06, 2025
pulisher
May 04, 2025

Insiders Re-Evaluate Their US$2.75m Stock Purchase As Prothena Falls To US$458m - Yahoo

May 04, 2025
pulisher
May 04, 2025

Barclays PLC Buys 10,116 Shares of Prothena Co. plc (NASDAQ:PRTA) - Defense World

May 04, 2025
pulisher
May 04, 2025

Invesco Ltd. Purchases 1,632 Shares of Prothena Co. plc (NASDAQ:PRTA) - Defense World

May 04, 2025
pulisher
May 02, 2025

Prothena Corporation plc (PRTA) Stock: Uncovering 52-Week Market Trends - investchronicle.com

May 02, 2025
pulisher
May 02, 2025

Prothena Corporation plc (PRTA) did well last session? - uspostnews.com

May 02, 2025
pulisher
May 02, 2025

Press Release Distribution & PR Platform - ACCESS Newswire

May 02, 2025
pulisher
May 02, 2025

Prothena Co. plc (NASDAQ:PRTA) Shares Sold by Wells Fargo & Company MN - Defense World

May 02, 2025
pulisher
May 01, 2025

Prothena to Report First Quarter 2025 Financial Results on May 8 - BioSpace

May 01, 2025
pulisher
May 01, 2025

Post-Trade Analysis: Prothena Corporation plc (PRTA) Slides -5.06, Closing at 9.20 - DWinneX

May 01, 2025
pulisher
Apr 29, 2025

Legal & General Group Plc Reduces Stock Holdings in Prothena Co. plc (NASDAQ:PRTA) - Defense World

Apr 29, 2025
pulisher
Apr 29, 2025

Prothena outlines potential multi-billion dollar opportunity with birtamimab launch by 2026 - MSN

Apr 29, 2025
pulisher
Apr 24, 2025

Analytical Lens: Exploring Prothena Corporation plc (PRTA)’s Financial Story Through Ratios - DWinneX

Apr 24, 2025
pulisher
Apr 24, 2025

It would be worthwhile to take a closer look at Prothena Corporation plc (PRTA) - uspostnews.com

Apr 24, 2025
pulisher
Apr 21, 2025

Mariner LLC Has $4.76 Million Stock Position in Prothena Co. plc (NASDAQ:PRTA) - The AM Reporter

Apr 21, 2025
pulisher
Apr 19, 2025

19,687 Shares in Prothena Co. plc (NASDAQ:PRTA) Bought by Franklin Resources Inc. - Defense World

Apr 19, 2025
pulisher
Apr 19, 2025

JPMorgan Chase & Co. Purchases 187,364 Shares of Prothena Co. plc (NASDAQ:PRTA) - Defense World

Apr 19, 2025
pulisher
Apr 18, 2025

(PRTA) Technical Pivots with Risk Controls - news.stocktradersdaily.com

Apr 18, 2025
pulisher
Apr 17, 2025

Vanguard Group Inc. Boosts Stake in Prothena Co. plc (NASDAQ:PRTA) - Defense World

Apr 17, 2025
pulisher
Apr 13, 2025

Prothena Co. plc (NASDAQ:PRTA) Shares Bought by American Century Companies Inc. - Defense World

Apr 13, 2025
pulisher
Apr 13, 2025

Norges Bank Invests $796,000 in Prothena Co. plc (NASDAQ:PRTA) - Defense World

Apr 13, 2025
pulisher
Apr 12, 2025

Raymond James Financial Inc. Acquires New Stake in Prothena Co. plc (NASDAQ:PRTA) - Defense World

Apr 12, 2025
pulisher
Apr 11, 2025

Corebridge Financial Inc. Sells 1,596 Shares of Prothena Co. plc (NASDAQ:PRTA) - Defense World

Apr 11, 2025
pulisher
Apr 11, 2025

Prothena Co. plc (NASDAQ:PRTA) Given Average Rating of “Moderate Buy” by Brokerages - Defense World

Apr 11, 2025
pulisher
Apr 09, 2025

KLP Kapitalforvaltning AS Purchases Shares of 12,900 Prothena Co. plc (NASDAQ:PRTA) - Defense World

Apr 09, 2025
pulisher
Apr 04, 2025

Thrivent Financial for Lutherans Sells 8,889 Shares of Prothena Co. plc (NASDAQ:PRTA) - Defense World

Apr 04, 2025
pulisher
Apr 03, 2025

Teacher Retirement System of Texas Purchases Shares of 10,434 Prothena Co. plc (NASDAQ:PRTA) - Defense World

Apr 03, 2025
pulisher
Apr 02, 2025

Benign Growth For Prothena Corporation plc (NASDAQ:PRTA) Underpins Stock's 26% Plummet - simplywall.st

Apr 02, 2025

Prothena Corporation Plc Stock (PRTA) Financials Data

Revenue

loading

Net Income

loading

Cash Flow

loading

EPS

loading

Prothena Corporation Plc Stock (PRTA) Insider Trading

Insider Trading Relationship Date Transaction Cost #Shares Value ($) #Shares Total
EcoR1 Capital, LLC
10% Owner
May 06 '25
Sale
7.64
1,984,053
15,164,712
5,304,596
EcoR1 Capital, LLC
10% Owner
May 05 '25
Sale
8.11
977,693
7,930,166
7,288,649
SCULLY WILLIAM P
10% Owner
Jan 14 '25
Buy
12.79
100,000
1,279,040
735,993
SCULLY WILLIAM P
10% Owner
Dec 18 '24
Buy
13.93
73,436
1,022,670
1,297,693
SCULLY WILLIAM P
10% Owner
Dec 31 '24
Buy
13.01
32,000
416,393
650,193
SCULLY WILLIAM P
10% Owner
Dec 20 '24
Buy
15.91
2,000
31,813
618,693
$65.08
price down icon 0.84%
$19.36
price down icon 0.31%
$33.15
price up icon 0.15%
$23.96
price down icon 2.80%
$92.77
price down icon 2.12%
biotechnology ONC
$231.99
price down icon 1.67%
Cap:     |  Volume (24h):