Prothena Corp. Plc (PRTA)

11.71
NASDAQ : Health Technology
Prev Close 11.71
Day Low/High 11.36 / 11.85
52 Wk Low/High 10.43 / 46.14
Avg Volume 486.40K
Exchange NASDAQ
Shares Outstanding 39.86M
Market Cap 474.78M
EPS -4.10
P/E Ratio N/A
Div & Yield N.A. (N.A)

Latest News

Prothena Reaches Analyst Target Price

Prothena Reaches Analyst Target Price

In recent trading, shares of Prothena Corp plc have crossed above the average analyst 12-month target price of $14.25, changing hands for $14.34/share. When a stock reaches the target an analyst has set, the analyst logically has two ways to react: downgrade on valuation, or, re-adjust their target price to a higher level.

Investor Alert: Kaplan Fox Announces Investigation Of Prothena Corporation Plc

Investor Alert: Kaplan Fox Announces Investigation Of Prothena Corporation Plc

NEW YORK, July 24, 2018 /PRNewswire/ -- Kaplan Fox & Kilsheimer LLP ( www.kaplanfox.

SHAREHOLDER ALERT - Bronstein, Gewirtz & Grossman, LLC Notifies Investors Of Class Action Against Prothena Corporation Plc (PRTA) & Lead Plaintiff Deadline - September 17, 2018

SHAREHOLDER ALERT - Bronstein, Gewirtz & Grossman, LLC Notifies Investors Of Class Action Against Prothena Corporation Plc (PRTA) & Lead Plaintiff Deadline - September 17, 2018

NEW YORK, July 18, 2018 /PRNewswire/ -- Attorney Advertising -- Bronstein, Gewirtz & Grossman, LLC notifies investors that a class action lawsuit has been filed against Prothena Corporation plc ("Prothena" or the "Company") (NASDAQ: PRTA) and certain of...

MONDAY DEADLINE ALERT: The Schall Law Firm Announces It Is Investigating Claims Against Prothena Corporation Plc And Encourages Investors With Losses In Excess Of $100,000 To Contact The Firm

MONDAY DEADLINE ALERT: The Schall Law Firm Announces It Is Investigating Claims Against Prothena Corporation Plc And Encourages Investors With Losses In Excess Of $100,000 To Contact The Firm

The Schall Law Firm, a national shareholder rights litigation firm, announces that it is investigating claims on behalf of investors of Prothena Corporation plc (''Prothena" or ''the Company'') (NASDAQ: PRTA) for violations of §§10(b) and 20(a) of the...

July 16th Deadline Alert: Glancy Prongay & Murray LLP Reminds Investors Of The Deadline In The Class Action Lawsuit Against Prothena Corporation Plc (PRTA)

July 16th Deadline Alert: Glancy Prongay & Murray LLP Reminds Investors Of The Deadline In The Class Action Lawsuit Against Prothena Corporation Plc (PRTA)

National securities litigation law firm Glancy Prongay & Murray LLP ("GPM") reminds investors of the  July 16, 2018 deadline to file a lead plaintiff motion in the class action filed on behalf of investors that purchased Prothena Corporation...

SHAREHOLDER ALERT - Bronstein, Gewirtz & Grossman, LLC Notifies Investors With Losses In Excess Of $2,000,000 Of Class Action Against Prothena Corporation Plc (PRTA) & Lead Plaintiff Deadline - July 16, 2018

SHAREHOLDER ALERT - Bronstein, Gewirtz & Grossman, LLC Notifies Investors With Losses In Excess Of $2,000,000 Of Class Action Against Prothena Corporation Plc (PRTA) & Lead Plaintiff Deadline - July 16, 2018

NEW YORK, July 10, 2018 /PRNewswire/ -- Attorney Advertising -- Bronstein, Gewirtz & Grossman, LLC notifies investors that a class action lawsuit has been filed against Prothena Corporation plc ("Prothena" or the "Company") (NASDAQ: PRTA) and certain of...

Scott Scott Attorneys At Law LLP Reminds Investors Of Securities Class Action Against Prothena Corporation Plc (PRTA)

Scott Scott Attorneys At Law LLP Reminds Investors Of Securities Class Action Against Prothena Corporation Plc (PRTA)

Scott+Scott Attorneys at Law LLP ("Scott+Scott"), a national securities and consumer rights litigation firm, reminds investors that a class action lawsuit has been filed against Prothena Corporation plc (NASDAQ: PRTA) ("Prothena" or the "Company") and...

PRTA LOSS ALERT NOTICE: Rosen Law Firm Announces Filing Of Securities Class Action Lawsuit Against Prothena Corporation Plc - PRTA

PRTA LOSS ALERT NOTICE: Rosen Law Firm Announces Filing Of Securities Class Action Lawsuit Against Prothena Corporation Plc - PRTA

NEW YORK, July 6, 2018 /PRNewswire/ -- Rosen Law Firm, a global investor rights law firm, announces the filing of a class action lawsuit on behalf of purchasers of the securities of Prothena Corporation plc (NASDAQ: PRTA) from October 15, 2015 through...

PRTA INVESTORS REMINDER: Lieff Cabraser Reminds Investors Of Deadline In Class Action Against Prothena Corporation Plc

PRTA INVESTORS REMINDER: Lieff Cabraser Reminds Investors Of Deadline In Class Action Against Prothena Corporation Plc

The law firm of Lieff Cabraser Heimann & Bernstein, LLP reminds investors of the upcoming deadline to move for appointment as lead plaintiff in the class action litigation has been filed on behalf of investors who purchased or otherwise acquired the...

PRTA ALERT: Rosen Law Firm Reminds Prothena Corporation Plc Investors Of Important Deadline In Case- PRTA

PRTA ALERT: Rosen Law Firm Reminds Prothena Corporation Plc Investors Of Important Deadline In Case- PRTA

Rosen Law Firm, a global investor rights law firm, reminds purchasers of the securities of Prothena Corporation plc (NASDAQ: PRTA) from October 15, 2015 through April 20, 2018, both dates inclusive (the "Class Period") of the important July 16, 2018 lead...

DEADLINE ALERT: Brower Piven Reminds Investors Of Upcoming Deadline In Class Action Lawsuit And Encourages Those Who Have Losses In Excess Of $100,000 From Investment In Prothena Corporation Plc To Contact The Firm

DEADLINE ALERT: Brower Piven Reminds Investors Of Upcoming Deadline In Class Action Lawsuit And Encourages Those Who Have Losses In Excess Of $100,000 From Investment In Prothena Corporation Plc To Contact The Firm

The securities litigation law firm of Brower Piven, A Professional Corporation, announces that a class action lawsuit has been commenced in the United States District Court for the Northern District of California on behalf of purchasers of Prothena...

Scott Scott Attorneys At Law LLP Reminds Investors Of Securities Class Action Against Prothena Corporation Plc (PRTA)

Scott Scott Attorneys At Law LLP Reminds Investors Of Securities Class Action Against Prothena Corporation Plc (PRTA)

NEW YORK, June 20, 2018 /PRNewswire/ --  Scott+Scott Attorneys at Law LLP ("Scott+Scott"), a national securities and consumer rights  litigation firm, reminds investors that a class action lawsuit has been filed against Prothena Corporation plc (NASDAQ:...

PRTA INVESTORS NOTICE: Lieff Cabraser Reminds Investors Of Deadline In Class Action Against Prothena Corporation Plc

PRTA INVESTORS NOTICE: Lieff Cabraser Reminds Investors Of Deadline In Class Action Against Prothena Corporation Plc

The law firm of Lieff Cabraser Heimann & Bernstein, LLP reminds investors of the upcoming deadline to move for appointment as lead plaintiff in the class action litigation that has been filed on behalf of investors who purchased or otherwise acquired the...

The Klein Law Firm Reminds Investors Of A Class Action Commenced On Behalf Of Prothena Corporation Shareholders And A Lead Plaintiff Deadline Of July 16, 2018 (PRTA)

The Klein Law Firm Reminds Investors Of A Class Action Commenced On Behalf Of Prothena Corporation Shareholders And A Lead Plaintiff Deadline Of July 16, 2018 (PRTA)

The Klein Law Firm announces that a class action complaint has been filed on behalf of shareholders of Prothena Corporation (NASDAQ: PRTA) who purchased shares between October 15, 2015 and April 20, 2018.

PRTA EQUITY ALERT: The Law Offices Of Vincent Wong Reminds Investors Of Commencement Of A Class Action Involving Prothena Corporation And A Lead Plaintiff Deadline Of July 16, 2018

PRTA EQUITY ALERT: The Law Offices Of Vincent Wong Reminds Investors Of Commencement Of A Class Action Involving Prothena Corporation And A Lead Plaintiff Deadline Of July 16, 2018

The Law Offices of Vincent Wong announce that a class action lawsuit has been commenced in the United States District Court for the Northern District of California on behalf of investors who purchased Prothena Corporation ("Prothena") (NASDAQ: PRTA)...

EQUITY ALERT: Levi & Korsinsky, LLP Reminds Shareholders Of Prothena Corporation Of A Class Action Lawsuit And A Lead Plaintiff Deadline Of July 16, 2018

EQUITY ALERT: Levi & Korsinsky, LLP Reminds Shareholders Of Prothena Corporation Of A Class Action Lawsuit And A Lead Plaintiff Deadline Of July 16, 2018

The following statement is being issued by Levi & Korsinsky, LLP: To: All persons or entities who purchased or otherwise acquired securities of Prothena Corporation ("Prothena") (NASDAQ: PRTA) between October 15, 2015 and April 20, 2018 .

The Klein Law Firm Announces A Class Action Commenced On Behalf Of Prothena Corporation Shareholders And A Lead Plaintiff Deadline Of July 16, 2018 (PRTA)

The Klein Law Firm Announces A Class Action Commenced On Behalf Of Prothena Corporation Shareholders And A Lead Plaintiff Deadline Of July 16, 2018 (PRTA)

The Klein Law Firm announces that a class action complaint has been filed on behalf of shareholders of Prothena Corporation (NASDAQ:PRTA) who purchased shares between October 15, 2015 and April 20, 2018.

PRTA INVESTOR ALERT: The Law Offices Of Vincent Wong Notifies Investors Of Commencement Of A Class Action Involving Prothena Corporation And A Lead Plaintiff Deadline Of July 16, 2018

PRTA INVESTOR ALERT: The Law Offices Of Vincent Wong Notifies Investors Of Commencement Of A Class Action Involving Prothena Corporation And A Lead Plaintiff Deadline Of July 16, 2018

The Law Offices of Vincent Wong announce that a class action lawsuit has been commenced in the United States District Court for the Northern District of California on behalf of investors who purchased Prothena Corporation ("Prothena") (NASDAQ: PRTA)...

SHAREHOLDER ACTION ALERT: The Schall Law Firm Announces The Filing Of A Class Action Lawsuit Against Prothena Corporation Plc And Encourages Investors With Losses In Excess Of $100,000 To Contact The Firm

SHAREHOLDER ACTION ALERT: The Schall Law Firm Announces The Filing Of A Class Action Lawsuit Against Prothena Corporation Plc And Encourages Investors With Losses In Excess Of $100,000 To Contact The Firm

The Schall Law Firm, a national shareholder rights litigation firm, announces the filing of a class action lawsuit against Prothena Corporation plc (''Prothena" or "the Company") (NASDAQ: PRTA) for violations of §§10(b) and 20(a) of the Securities...

PRTA INVESTORS ALERT: Lieff Cabraser Announces Securities Class Action Against Prothena Corporation Plc

PRTA INVESTORS ALERT: Lieff Cabraser Announces Securities Class Action Against Prothena Corporation Plc

The law firm of Lieff Cabraser Heimann & Bernstein, LLP announces that class action litigation has been filed on behalf of investors who purchased or otherwise acquired the publicly traded securities of Prothena Corporation plc ("Prothena" or the...

INVESTOR ALERT: Levi & Korsinsky, LLP Notifies Shareholders Of Prothena Corporation Of A Class Action Lawsuit And A Lead Plaintiff Deadline Of July 16, 2018

INVESTOR ALERT: Levi & Korsinsky, LLP Notifies Shareholders Of Prothena Corporation Of A Class Action Lawsuit And A Lead Plaintiff Deadline Of July 16, 2018

The following statement is being issued by Levi & Korsinsky, LLP: To: All persons or entities who purchased or otherwise acquired securities of Prothena Corporation ("Prothena") (NASDAQ:PRTA) between October 15, 2015 and April 20, 2018 .

PRTA Crosses Above Average Analyst Target

PRTA Crosses Above Average Analyst Target

In recent trading, shares of Prothena Corp plc have crossed above the average analyst 12-month target price of $13.67, changing hands for $13.69/share. When a stock reaches the target an analyst has set, the analyst logically has two ways to react: downgrade on valuation, or, re-adjust their target price to a higher level.

INVESTOR ALERT: Brower Piven Encourages Shareholders Who Have Losses In Excess Of $100,000 From Investment In Prothena Corporation Plc To Contact Brower Piven Before The Lead Plaintiff Deadline In Class Action Lawsuit

INVESTOR ALERT: Brower Piven Encourages Shareholders Who Have Losses In Excess Of $100,000 From Investment In Prothena Corporation Plc To Contact Brower Piven Before The Lead Plaintiff Deadline In Class Action Lawsuit

The securities litigation law firm of Brower Piven, A Professional Corporation, announces that a class action lawsuit has been commenced in the United States District Court for the Northern District of California on behalf of purchasers of Prothena...

EQUITY ALERT: Rosen Law Firm Announces Filing Of Securities Class Action Lawsuit Against Prothena Corporation Plc - PRTA

Rosen Law Firm, a global investor rights law firm, announces the filing of a class action lawsuit on behalf of purchasers of the securities of Prothena Corporation plc (NASDAQ:PRTA) from October 15, 2015 and April 20, 2018, both dates inclusive (the...

The Klein Law Firm Reminds Investors Of An Investigation Concerning Possible Violations Of Federal Securities Laws By Prothena Corporation (PRTA)

The Klein Law Firm Reminds Investors Of An Investigation Concerning Possible Violations Of Federal Securities Laws By Prothena Corporation (PRTA)

The Klein Law Firm announces the commencement of an investigation of Prothena Corporation (NASDAQGS: PRTA) concerning possible violations of federal securities laws.

Noteworthy Wednesday Option Activity: PRTA, WHR, NXPI

Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Prothena Corp plc , where a total of 6,349 contracts have traded so far, representing approximately 634,900 underlying shares. That amounts to about 71.7% of PRTA's average daily trading volume over the past month of 885,460 shares.

 The Klein Law Firm Notifies Investors Of An Investigation Concerning Possible Violations Of Federal Securities Laws By Prothena Corporation (PRTA)

 The Klein Law Firm Notifies Investors Of An Investigation Concerning Possible Violations Of Federal Securities Laws By Prothena Corporation (PRTA)

The Klein Law Firm announces the commencement of an investigation of Prothena Corporation (NASDAQGS:PRTA) concerning possible violations of federal securities laws.

PRTA INVESTOR ALERT: The Law Offices Of Vincent Wong Reminds Investors Of An Investigation Involving Possible Securities Fraud Violations By The Board Of Directors Of Prothena Corporation

PRTA INVESTOR ALERT: The Law Offices Of Vincent Wong Reminds Investors Of An Investigation Involving Possible Securities Fraud Violations By The Board Of Directors Of Prothena Corporation

The Law Offices of Vincent Wong notifies investors of an investigation concerning whether Prothena Corporation ("Prothena" or the "Company") (NASDAQGS: PRTA) violated federal securities laws.

TheStreet Quant Rating: D (Sell)