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PRTA – prothena corporation plc - ordinary shares (US:NASDAQ)
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Main News & Impact Reports
Date
Time
Symbol
Headline
Impact
1/21
07:04 pm
prta
All You Need to Know About Prothena (PRTA) Rating Upgrade to Buy [Yahoo! Finance]
Medium
Report
All You Need to Know About Prothena (PRTA) Rating Upgrade to Buy [Yahoo! Finance]
1/20
12:26 am
prta
How The New Price Target And Partnerships Are Rewriting Prothena's Story [Yahoo! Finance]
Low
Report
How The New Price Target And Partnerships Are Rewriting Prothena's Story [Yahoo! Finance]
1/5
04:38 pm
prta
How Are Partnered Pipelines Rewriting The Prothena (PRTA) Narrative And Price Target Outlook [Yahoo! Finance]
Low
Report
How Are Partnered Pipelines Rewriting The Prothena (PRTA) Narrative And Price Target Outlook [Yahoo! Finance]
1/2
12:25 pm
prta
We Think Prothena (NASDAQ:PRTA) Can Afford To Drive Business Growth [Yahoo! Finance]
Low
Report
We Think Prothena (NASDAQ:PRTA) Can Afford To Drive Business Growth [Yahoo! Finance]
12/30
04:14 pm
prta
Prothena (NASDAQ:PRTA) had its "sell (e+)" rating reaffirmed by analysts at Weiss Ratings.
Low
Report
Prothena (NASDAQ:PRTA) had its "sell (e+)" rating reaffirmed by analysts at Weiss Ratings.
12/12
04:37 pm
prta
Prothena Announces Board of Directors Update [Yahoo! Finance]
Medium
Report
Prothena Announces Board of Directors Update [Yahoo! Finance]
12/12
04:05 pm
prta
Prothena Announces Board of Directors Update
Medium
Report
Prothena Announces Board of Directors Update
12/6
09:21 pm
prta
How the Narrative Surrounding Prothena Is Changing After New Pipeline and Valuation Updates [Yahoo! Finance]
Low
Report
How the Narrative Surrounding Prothena Is Changing After New Pipeline and Valuation Updates [Yahoo! Finance]
Date
Time
Symbol
Company Name
Action
%Chg
11/6/2025
04:05 pm
prta
prothena corporation plc - ordinary shares
MISS
Report
4.8%
prothena corporation plc - ordinary shares
8/4/2025
04:05 pm
prta
prothena corporation plc - ordinary shares
MISS
Report
1.3%
prothena corporation plc - ordinary shares
5/8/2025
04:05 pm
prta
prothena corporation plc - ordinary shares
MISS
Report
4.6%
prothena corporation plc - ordinary shares
2/20/2025
04:05 pm
prta
prothena corporation plc - ordinary shares
MISS
Report
2.0%
prothena corporation plc - ordinary shares
Date
Time
Symbol
Headline
Impact
12/12
04:26 pm
prta
Form 8-K PROTHENA CORP PUBLIC For: Dec 10
Medium
Report
Form 8-K PROTHENA CORP PUBLIC For: Dec 10
11/19
04:31 pm
prta
Form 8-K PROTHENA CORP PUBLIC For: Nov 19
Low
Report
Form 8-K PROTHENA CORP PUBLIC For: Nov 19
11/14
07:47 pm
prta
Form SCHEDULE 13G/A PROTHENA CORP PUBLIC Filed by: ADAR1 Capital Management, LLC
Medium
Report
Form SCHEDULE 13G/A PROTHENA CORP PUBLIC Filed by: ADAR1 Capital Management, LLC
11/12
03:52 pm
prta
Form SCHEDULE 13G/A PROTHENA CORP PUBLIC Filed by: Fennell Todd W.
Low
Report
Form SCHEDULE 13G/A PROTHENA CORP PUBLIC Filed by: Fennell Todd W.
11/12
03:47 pm
prta
Form SCHEDULE 13G/A PROTHENA CORP PUBLIC Filed by: SCULLY WILLIAM P
Low
Report
Form SCHEDULE 13G/A PROTHENA CORP PUBLIC Filed by: SCULLY WILLIAM P
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Main News & Impact Reports
TOP News Gainers
12/19
Form 8-K Prothena Corp plc For: Dec 19
23.2%
3/19 Prothena Co. PLC (NASDAQ: PRTA) was downgraded by analysts at BidaskClub from a "hold" rating to a "sell" rating. 15.7%
4/22 BRIEF-Prothena Corporation Plc- Update On Prasinezumab Expected Later This Year [Reuters] 15.5%
4/3 Prothena Announces Inducement Grant Under Nasdaq Listing Rule 5635(c)(4) 14.7%
3/3 Prothena Announces Appointment of Brandon Smith as Chief Business Officer 6.9%
11/19 Prothena Co. PLC (NASDAQ: PRTA) was upgraded by analysts at Evercore ISI to an "outperform" rating. 5.5%
8/5 Form SC 13G Prothena Corp plc Filed by: GREAT POINT PARTNERS LLC 4.9%
10/30 Form 8-K/A Prothena Corp plc For: Oct 29 4.8%
5/7 Q1/2019 3/31/2019 EPS -0.520 ZacksConsensus -0.600 ActVsEst 0.080 - Beat 4.8%
12/21 Prothena Co. PLC (NASDAQ: PRTA) was downgraded by analysts at ValuEngine from a "sell" rating to a "strong sell" rating. 4.4%
3/19 Prothena Co. PLC (NASDAQ: PRTA) was downgraded by analysts at BidaskClub from a "hold" rating to a "sell" rating. 15.7%
4/22 BRIEF-Prothena Corporation Plc- Update On Prasinezumab Expected Later This Year [Reuters] 15.5%
4/3 Prothena Announces Inducement Grant Under Nasdaq Listing Rule 5635(c)(4) 14.7%
3/3 Prothena Announces Appointment of Brandon Smith as Chief Business Officer 6.9%
11/19 Prothena Co. PLC (NASDAQ: PRTA) was upgraded by analysts at Evercore ISI to an "outperform" rating. 5.5%
8/5 Form SC 13G Prothena Corp plc Filed by: GREAT POINT PARTNERS LLC 4.9%
10/30 Form 8-K/A Prothena Corp plc For: Oct 29 4.8%
5/7 Q1/2019 3/31/2019 EPS -0.520 ZacksConsensus -0.600 ActVsEst 0.080 - Beat 4.8%
12/21 Prothena Co. PLC (NASDAQ: PRTA) was downgraded by analysts at ValuEngine from a "sell" rating to a "strong sell" rating. 4.4%
TOP News Decliners
5/10
Prothena (PRTA) Investor Presentation - Slideshow [Seeking Alpha]
-7.4%
8/15 Prothena Co. PLC (NASDAQ: PRTA) was downgraded by analysts at BidaskClub from a "sell" rating to a "strong sell" rating. -6.7%
8/30 Prothena: Trading Below Cash, Key Clinical Readouts In Coming Year [Seeking Alpha] -5.4%
7/30 Prothena to Report Second Quarter 2019 Financial Results on August 6 -4.8%
2/14 Form SC 13G/A Prothena Corp plc Filed by: GREAT POINT PARTNERS LLC -4.8%
2/12 Q4/2019 12/31/2019 EPS -0.540 ZacksConsensus -0.650 ActVsEst 0.110 - Beat -4.4%
11/5 Form 8-K Prothena Corp plc For: Nov 05 -4.2%
4/21 Prothena Co. PLC (NASDAQ: PRTA) was upgraded by analysts at BidaskClub from a "hold" rating to a "buy" rating. -4.1%
1/23 Prothena Co. PLC (NASDAQ: PRTA) was downgraded by analysts at BidaskClub from a "buy" rating to a "hold" rating. -3.7%
5/22 Form S-3 Prothena Corp plc -3.1%
8/15 Prothena Co. PLC (NASDAQ: PRTA) was downgraded by analysts at BidaskClub from a "sell" rating to a "strong sell" rating. -6.7%
8/30 Prothena: Trading Below Cash, Key Clinical Readouts In Coming Year [Seeking Alpha] -5.4%
7/30 Prothena to Report Second Quarter 2019 Financial Results on August 6 -4.8%
2/14 Form SC 13G/A Prothena Corp plc Filed by: GREAT POINT PARTNERS LLC -4.8%
2/12 Q4/2019 12/31/2019 EPS -0.540 ZacksConsensus -0.650 ActVsEst 0.110 - Beat -4.4%
11/5 Form 8-K Prothena Corp plc For: Nov 05 -4.2%
4/21 Prothena Co. PLC (NASDAQ: PRTA) was upgraded by analysts at BidaskClub from a "hold" rating to a "buy" rating. -4.1%
1/23 Prothena Co. PLC (NASDAQ: PRTA) was downgraded by analysts at BidaskClub from a "buy" rating to a "hold" rating. -3.7%
5/22 Form S-3 Prothena Corp plc -3.1%
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