×
Join our live online event
How top hedge funds use news to make money
form the stock market & how ordinary people are
copying their strategies
Register now!
form the stock market & how ordinary people are
copying their strategies
No thanks
PRTA – prothena corporation plc - ordinary shares (US:NASDAQ)
DELAYED
$
| Volume Shares | |
| 1 Day Range | |
| Volume Ratio | |
| 52 Week High | |
| 52 Week Low |
| VWAP | |
| Today’s Volatility | |
| 20 Days Volatility | |
| Open | |
| Prior Close |
1D
5D
1M
3M
YTD
1Y
3Y
1 Day
PRTA
SPY
QQQ
Swipe to see more
Main News & Impact Reports
Date
Time
Symbol
Headline
Impact
6/18
04:23 pm
prta
Prothena Announces Corporate Restructuring [Yahoo! Finance]
Medium
Report
Prothena Announces Corporate Restructuring [Yahoo! Finance]
6/18
04:05 pm
prta
Prothena Announces Corporate Restructuring
Medium
Report
Prothena Announces Corporate Restructuring
6/16
11:45 am
prta
RHHBY to Advance Parkinson's Disease Drug to Late-Stage Development [Yahoo! Finance]
Low
Report
RHHBY to Advance Parkinson's Disease Drug to Late-Stage Development [Yahoo! Finance]
6/16
01:06 am
prta
Prothena’s Partner Roche to Advance Prasinezumab into Phase III Development for Early-Stage Parkinson's Disease
High
Report
Prothena’s Partner Roche to Advance Prasinezumab into Phase III Development for Early-Stage Parkinson's Disease
5/28
04:21 pm
prta
Biogen strikes RNAi deal with City; Aurion withdraws IPO [Yahoo! Finance]
Low
Report
Biogen strikes RNAi deal with City; Aurion withdraws IPO [Yahoo! Finance]
5/28
04:05 pm
prta
Why Is Prothena Stock Trading Lower On Tuesday? [Yahoo! Finance]
Medium
Report
Why Is Prothena Stock Trading Lower On Tuesday? [Yahoo! Finance]
5/28
02:00 pm
prta
Oppenheimer Downgrades Prothena Corporation (NASDAQ:PRTA) to Perform from Outperform [Yahoo! Finance]
Low
Report
Oppenheimer Downgrades Prothena Corporation (NASDAQ:PRTA) to Perform from Outperform [Yahoo! Finance]
5/28
08:49 am
prta
Prothena Co. plc (NASDAQ: PRTA) was downgraded by analysts at Bank of America Co. from a "neutral" rating to an "underperform" rating.
Low
Report
Prothena Co. plc (NASDAQ: PRTA) was downgraded by analysts at Bank of America Co. from a "neutral" rating to an "underperform" rating.
Date
Time
Symbol
Company Name
Action
%Chg
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
2/20/2025
04:05 pm
prta
prothena corporation plc - ordinary shares
MISS
Report
7.7%
prothena corporation plc - ordinary shares
2/20/2025
04:05 pm
prta
prothena corporation plc - ordinary shares
MISS
Report
7.7%
prothena corporation plc - ordinary shares
Date
Time
Action
From
To
Firm
Impact
%Chg
5/27
09:12 am
Downgrades
Outperform
Market Perform
Oppenheimer Holdings Inc.
Low
Report
-1.5%
Date
Time
Symbol
Headline
Impact
6/18
04:17 pm
prta
Form 8-K PROTHENA CORP PUBLIC For: Jun 13
Medium
Report
Form 8-K PROTHENA CORP PUBLIC For: Jun 13
6/16
07:30 am
prta
Form 8-K PROTHENA CORP PUBLIC For: Jun 15
Low
Report
Form 8-K PROTHENA CORP PUBLIC For: Jun 15
6/5
07:44 pm
prta
Form SCHEDULE 13G/A PROTHENA CORP PUBLIC Filed by: WELLINGTON MANAGEMENT GROUP LLP
Medium
Report
Form SCHEDULE 13G/A PROTHENA CORP PUBLIC Filed by: WELLINGTON MANAGEMENT GROUP LLP
6/4
05:19 pm
prta
Form SCHEDULE 13G PROTHENA CORP PUBLIC Filed by: Logos Global Management LP
Medium
Report
Form SCHEDULE 13G PROTHENA CORP PUBLIC Filed by: Logos Global Management LP
5/29
09:08 pm
prta
Form SCHEDULE 13D/A PROTHENA CORP PUBLIC Filed by: EcoR1 Capital, LLC
Low
Report
Form SCHEDULE 13D/A PROTHENA CORP PUBLIC Filed by: EcoR1 Capital, LLC
5/23
04:33 pm
prta
Form 8-K PROTHENA CORP PUBLIC For: May 23
Medium
Report
Form 8-K PROTHENA CORP PUBLIC For: May 23
5/16
04:57 pm
prta
Form 4 PROTHENA CORP PUBLIC For: May 14 Filed by: WELCH DANIEL G
Low
Report
Form 4 PROTHENA CORP PUBLIC For: May 14 Filed by: WELCH DANIEL G
5/16
04:54 pm
prta
Form 4 PROTHENA CORP PUBLIC For: May 14 Filed by: Selkoe Dennis J.
Low
Report
Form 4 PROTHENA CORP PUBLIC For: May 14 Filed by: Selkoe Dennis J.
Stock Stats
| News Stats | |
|---|---|
| All News | |
| News Wires | |
| Media Monitoring | |
| SEC Edgar Filings | |
| Upgrades | |
| Downgrades | |
| Initiated | |
| Reiterated | |
| Last Earnings | |
| Last Earnings EPS | |
| Next Earnings | |
| Order Stats |
|---|
| Sub-Penny |
|
|
| Odd lot |
|
|
| Avg. bid-ask spread |
|
|
| Avg. bid-ask size |
|
|
| Shares at ask/bid |
|
|
| Off exchange |
|
|
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%
Don’t Miss Out On The Next BIG Stock Move
Never get left behind with our daily ‘Shakers & Movers’ newsletter. Discover the biggest gainer or loser in the stock market, and learn exactly WHY it moved. To find out which one caught Wall Street by surprise TODAY, sign up to our newsletter below: