Bulletin
Investor Alert

Prothena Corp. PLC

NAS: PRTA

GO

Set Alerts

Market Index

Overview Profile Charts Financials Historical Quotes Analyst Estimates Options SEC Filings Insiders
/marketstate/country/us
Prothena Corp. PLC

After Hours

PRTA
/zigman2/quotes/204713496/composite

$

60.06

Change

+2.31 +4.00%

Volume

Volume 12,171

Feb 3, 2023, 5:42 p.m.

Quotes are delayed by 20 min

/zigman2/quotes/204713496/composite

Today's close

$ 55.55

$ 57.75

Change

+2.20 +3.96%

Day low

Day high

$54.45

$58.12

Open
Open: 54.45

52 week low

52 week high

$21.06

$66.47

Open

Market cap

$2.87B

Average volume

561,370

P/E ratio

N/A

Rev. per Employee

$62,854

EPS

-3.34

Dividend

N/A

Div yield

N/A

Ex dividend date

N/A

Compare:
Indexes
  • Dow(INDU) INDU
  • Nasdaq (COMP) COMP
  • S&P 500 (SPX) SPX
  • Global Dow (GDOW) GDOW
1d
5d
3m
6m
1y
3y
5y
/news/latest/company/us/prta

MarketWatch News on PRTA

  5. Biotech stocks are a buy — especially these 18 picks

    1:02 p.m. March 13, 2021

    - Michael Brush

  7. Prothena upgraded to outperform from perform at Oppenheimer

    7:17 a.m. July 9, 2020

    - Tomi Kilgore

  8. Prothena upgraded to outperform from in line at Evercore ISI

    7:41 a.m. Nov. 19, 2019

    - Tomi Kilgore

  11. Prothena shares slide 2.2% premarket

    8:06 a.m. May 24, 2018

    - Ciara Linnane

  12. Prothena to lay off 57% of its workforce in reorganization

    8:05 a.m. May 24, 2018

    - Ciara Linnane

  13. Prothena expects to burn $40 mln to $50 mln of cash in 2018

    8:06 a.m. May 24, 2018

    - Ciara Linnane

  14. Prothena downgraded to sector perform from outperform at RBC Capital

    1:05 p.m. April 23, 2018

    - Tomi Kilgore

  15. Prothena shares plummet 60% on discontinued drug

    7:45 a.m. April 23, 2018

    - Emma Court

  16. Prothena shares plummet 60% on discontinued drug

    7:36 a.m. April 23, 2018

    - Emma Court

  17. Prothena shares surge on Celgene collaboration

    4:19 p.m. March 20, 2018

    - Wallace Witkowski

  18. Top Doc Quits Prothena As Key Trial Nears

    4:31 p.m. Feb. 5, 2018

    - Barrons Blogs

  20. Biotech Prothena shares fall after it scraps psoriasis trial

    10:52 a.m. Sept. 29, 2017

    - Ciara Linnane

  21. Loading more headlines...

Analyst Ratings

/news/nonmarketwatch/company/us/prta

Other News on PRTA

  1. Biogen (BIIB) Down on Report of Death in Alzheimer's Study

    12:42 p.m. Nov. 29, 2022

    - Zacks.com

  2. Birchview Capital, LP Buys 3, Sells 2 in 3rd Quarter

    4:00 p.m. Nov. 28, 2022

    - GuruFocus.com

  3. This Insider Just Sold Shares of Prothena Corp PLC

    12:30 p.m. Nov. 27, 2022

    - GuruFocus.com

  4. Prothena (PRTA) Earns Milestone Payment From Novo Nordisk

    10:07 a.m. Nov. 22, 2022

    - Zacks.com

  7. Birchview Capital, LP Buys 3, Sells 2 in 3rd Quarter

    4:00 p.m. Nov. 7, 2022

    - GuruFocus.com

  8. Prothena's (PRTA) Q3 Earnings Miss, Revenues Decline Y/Y

    11:13 a.m. Nov. 4, 2022

    - Zacks.com

  10. Prothena (PRTA) Reports Q3 Loss, Lags Revenue Estimates

    6:15 p.m. Nov. 3, 2022

    - Zacks.com

  11. 10-Q: PROTHENA CORP PUBLIC LTD CO

    3:41 p.m. Nov. 3, 2022

    - Edgar Online - (EDG = 10Q, 10K)

  12. Trading Ideas On The Upcoming CTAD 2022 Conference

    2:27 p.m. Nov. 2, 2022

    - Seeking Alpha

  14. Should Investors Worry About Prothena Corp PLC's Insider Sells?

    12:30 p.m. Oct. 22, 2022

    - GuruFocus.com

  15. Annovis (ANVS) Gains on FDA Authorization for AD Study

    11:57 a.m. Oct. 7, 2022

    - Zacks.com

  18. Prothena: Paying A Premium To Cover All The Alzheimer's Bases

    11:12 a.m. Sept. 29, 2022

    - Seeking Alpha

  19. LLY & PRTA in Spotlight on BIIB-Eisai's AD Drug Data

    8:39 a.m. Sept. 29, 2022

    - Zacks.com

  21. Loading more headlines...
/news/pressrelease/company/us/prta

Press Releases on PRTA

  2. Prothena Announces Proposed Public Offering of Ordinary Shares

    4:12 p.m. Dec. 13, 2022

    - BusinessWire - BZX

  11. Prothena to Participate in Upcoming Healthcare Conferences

    3:20 p.m. Sept. 1, 2022

    - GlobeNewswire

  17. Prothena to Participate in Jefferies Healthcare Conference

    3:05 p.m. June 2, 2022

    - GlobeNewswire

  21. Loading more headlines...

Rates »

Mortgage Equity Savings Auto
Link to MarketWatch's Slice.