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Disclosery

PRTA PROTHENA CORP PLC

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Stock (common), issuer CIK 1559053

159 managers (162 13F filers) reported a position in PRTA shares at 2025-03-31, 52,312,807 shares in all. 15 filers opened a position and 25 filers sold out during the quarter.

Managers
159
13F filers
162
New
15
Added
42
Reduced
58
Sold out
25
Shares held by filers
52,312,807

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

The latest Form 4 transactions, non-derivative.
OwnerDateSharesPriceFiling
SCULLY WILLIAM P10% owner2026-10-08+90,000 P$8.5656Form 4
SCULLY WILLIAM P10% owner2026-10-07+125,000 P$8.4012Form 4
SCULLY WILLIAM P10% owner2026-10-02+100,000 P$8.5724Form 4

13F holders, Q1 2025

Filers in the available 13F reports with a share position at 2025-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
EcoR1 Capital, LLC11,584,280$143M8.52%013F-HRTimeline
FMR LLCin group FMR LLC7,941,402$98.3M0.01%-129,90713F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…5,199,528$64.3M0.01%+68,65213F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.4,042,301$50M<0.01%-80,07513F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/3,455,856$42.8M0.01%-229,85213F-HRTimeline
ARMISTICE CAPITAL, LLC2,196,000$27.2M0.73%-40,00013F-HRTimeline
Palo Alto Investors LP1,659,734$20.5M3.91%-78,23013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP1,521,364$18.8M<0.01%-340,27713F-HRTimelineGroup
Siren, L.L.C.in group Siren, L.L.C.1,283,555$15.9M0.9%+183,71513F-HR/ATimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC1,269,271$15.7M<0.01%-134,56713F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,014,792$12.6M<0.01%+50,48413F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP863,148$10.7M<0.01%-1,68513F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY719,988$8.91M<0.01%+49813F-HRTimelineGroup
Boxer Capital Management, LLCin group Boxer Capital Management, LLC690,000$8.54M2.57%013F-HR/ATimelineGroup
Finepoint Capital LP640,071$7.92M1.34%-17,00013F-HRTimeline
UBS Group AGgroup of 2 filers holding626,131$7.75M-126,664Timeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.546,255$6.76M0.01%-199,92213F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC510,462$6.32M<0.01%-46,06413F-HR/ATimelineGroup
Rock Springs Capital Management LP492,601$6.1M0.35%-152,00013F-HRTimeline
Prosight Management, LP408,122$5.05M1.66%-10,00013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP373,703$4.62M<0.01%-30,79313F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO371,965$4.6M<0.01%-15,38513F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC354,650$4.39M0.01%+10,73313F-HRTimelineGroup
Birchview Capital, LP332,974$4.12M3.58%+28,40013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co319,607$3.96M<0.01%-7,54413F-HR/ATimelineGroup
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …307,987$3.74M<0.01%new13F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC239,900$2.97M<0.01%+38,00013F-HRTimeline
DCF Advisers, LLC195,000$2.41M1.3%+91,50013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding152,015$1.88M+46,069Timeline
PDT Partners, LLC150,316$1.86M0.13%+23,11313F-HRTimeline
Nuveen, LLCin group TIAA149,961$1.86M<0.01%13F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp146,009$1.81M<0.01%-4,22913F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC132,640$1.64M<0.01%+77,11213F-HR/ATimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/131,986$1.63M<0.01%+12,97913F-HRTimelineGroup
PINNACLE ASSOCIATES LTD100,259$1.24M0.02%-2,82213F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\95,810$1.19M<0.01%-16013F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…91,482$1.13M<0.01%-35813F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC89,399$1.11M<0.01%+47,88113F-HRTimelineGroup
Duncan Williams Asset Management, LLC88,339$1.09M0.39%+19,14013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC83,381$1.03M<0.01%-21,95713F-HR/ATimelineGroup
Hennion & Walsh Asset Management, Inc.77,637$961K0.04%+25,35313F-HRTimeline
SG Americas Securities, LLC72,559$898K<0.01%+34,94713F-HRTimeline
Swiss National Bank68,700$850K<0.01%013F-HRTimeline
RHUMBLINE ADVISERS66,079$818K<0.01%-1,03613F-HR/ATimeline
CITIGROUP INCin group CITIGROUP INC65,826$815K<0.01%-2,60713F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …65,231$807K<0.01%-4,95313F-HRTimelineGroup
TD Asset Management Inc62,694$776K<0.01%-2,00013F-HRTimeline
NORGES BANK57,454$711K<0.01%013F-HR/ATimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC52,467$649K<0.01%-70,53813F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.46,753$579K<0.01%013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN45,889$568K<0.01%-6,93413F-HRTimelineGroup
Rafferty Asset Management, LLC43,978$544K<0.01%-33,69413F-HRTimeline
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…43,816$542K<0.01%-99913F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc41,354$512K<0.01%-5113F-HRTimelineGroup
ExodusPoint Capital Management, LP41,272$511K0.01%new13F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…38,626$478K<0.01%013F-HR/ATimelineGroup
ALPS ADVISORS INCin group ALPS ADVISORS INC37,956$470K<0.01%-5,55413F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.37,638$466K<0.01%-5,20813F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC34,836$431K<0.01%+4,43713F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC33,375$413K<0.01%+10,99213F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…33,243$411K<0.01%013F-HRTimeline
Focused Wealth Management, Inc32,129$398K0.05%013F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding29,135$363K+73Timeline
RBF Capital, LLC29,200$361K0.02%013F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…25,402$314K<0.01%-47113F-HRTimelineGroup
EDGEWOOD MANAGEMENT LLC24,060$298K<0.01%013F-HRTimeline
Ensign Peak Advisors, Inc21,643$268K<0.01%013F-HRTimeline
Purkiss Capital Advisors LLC21,629$268K0.2%+10,90013F-HRTimeline
DARK FOREST CAPITAL MANAGEMENT LP21,059$261K0.01%new13F-HRTimeline
Handelsbanken Fonder AB20,900$259K<0.01%013F-HRTimeline
Corebridge Financial, Inc.in group Corebridge Financial, Inc.20,831$258K<0.01%-30913F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources19,747$244K<0.01%+6013F-HRTimelineGroup
Foundation Wealth Management, LLC19,471$241K0.19%013F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson18,047$237K<0.01%013F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC18,553$230K<0.01%new13F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.17,803$220K<0.01%new13F-HRTimelineGroup
Man Group plcin group Man Group plc17,000$210K<0.01%-60,43013F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…16,040$198K<0.01%+1013F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP16,033$198K<0.01%-22,36113F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…15,386$190K<0.01%013F-HRTimeline
SHELTON CAPITAL MANAGEMENT15,233$189K<0.01%new13F-HRTimeline
DekaBank Deutsche Girozentrale14,000$180K<0.01%013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND14,279$177K<0.01%013F-HR/ATimeline
HRT FINANCIAL LP14,036$173K<0.01%new13F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC13,320$165K<0.01%new13F-HRTimeline
Cresset Asset Management, LLC13,125$162K<0.01%-6,30913F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC13,088$160K<0.01%-11,09113F-HRTimelineGroup
CARY STREET PARTNERS FINANCIAL LLCin group CARY STREET PARTNERS ASSET MA…12,500$155K<0.01%013F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC12,487$155K<0.01%-62413F-HRTimelineGroup
Virtus Investment Advisers, LLCgroup of 2 filers holding11,891$147K+6,743Timeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC11,684$145K<0.01%-1,14513F-HR/ATimelineGroup
ProShare Advisors LLC11,632$144K<0.01%-2,89213F-HRTimeline
China Universal Asset Management Co., L…10,797$134K0.01%-61213F-HRTimeline
Creative Planningin group Creative Planning10,690$132K<0.01%-5,37113F-HRTimelineGroup
Cambridge Investment Research Advisors,…10,164$126K<0.01%new13F-HRTimeline
Police & Firemen's Retirement System of…10,113$125K<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS9,577$119K<0.01%-87,80613F-HRTimelineGroup
Chicago Partners Investment Group LLC14,512$106K<0.01%+3,31513F-HRTimeline
KLP KAPITALFORVALTNING AS6,700$82.9K<0.01%-6,20013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…6,552$81K<0.01%013F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…4,368$54.1K<0.01%013F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA4,318$53K<0.01%-2,58613F-HR/ATimelineGroup
HighMark Wealth Management LLC2,018$25K0.01%-9,15013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,894$23K<0.01%-14,93213F-HRTimelineGroup
Amundiin group Amundi2,014$22.8K<0.01%+6013F-HRTimelineGroup
Brooklyn Investment Group1,754$21.7K<0.01%+1,59313F-HRTimeline
AMALGAMATED BANK1,440$18K<0.01%013F-HRTimeline
GF FUND MANAGEMENT CO. LTD.1,377$17K<0.01%+24713F-HRTimeline
NISA INVESTMENT ADVISORS, LLC1,237$15.3K<0.01%+25713F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…1,194$14.8K<0.01%+31313F-HRTimelineGroup
SBI Securities Co., Ltd.962$11.9K<0.01%-1013F-HRTimeline
Farther Finance Advisors, LLC967$11.4K<0.01%+61413F-HRTimeline
Lindbrook Capital, LLC874$10.8K<0.01%+19713F-HRTimeline
Blue Trust, Inc.711$8.8K<0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC635$8K<0.01%-55413F-HRTimelineGroup
HM PAYSON & CO600$7.42K<0.01%-20013F-HRTimeline
Versant Capital Management, Inc531$6.57K<0.01%-9813F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\512$6.34K<0.01%-34913F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…488$6.04K<0.01%+7213F-HRTimelineGroup
GAMMA Investing LLC485$6K<0.01%+35813F-HR/ATimeline
SIGNATUREFD, LLC360$4.46K<0.01%+813F-HRTimeline
Sterling Capital Management LLC331$4.1K<0.01%-26313F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…304$3.76K<0.01%+20013F-HRTimelineGroup
Aster Capital Management (DIFC) Ltd227$3.59K<0.01%-6113F-HRTimeline
SVB WEALTH LLC274$3.39K<0.01%new13F-HRTimeline
Manchester Capital Management LLC250$3.09K<0.01%013F-HRTimeline
Caitong International Asset Management …238$2.94K<0.01%+12313F-HRTimeline
Spire Wealth Managementin group Spire Wealth Management200$2.48K<0.01%new13F-HRTimelineGroup
Evelyn Partners Investment Management L…in group Evelyn Partners Group Ltd199$2.46K<0.01%013F-HR/ATimelineGroup
Asset Dedication, LLC184$2.28K<0.01%013F-HRTimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.195$2K<0.01%013F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.161$1.99K<0.01%-9813F-HRTimelineGroup
North Capital, Inc.159$1.97K<0.01%13F-HRTimeline
SITTNER & NELSON, LLC155$1.92K<0.01%013F-HRTimeline
IFP Advisors, Inc132$1.63K<0.01%013F-HRTimeline
ALBION FINANCIAL GROUP /UT125$1.55K<0.01%013F-HRTimeline
MassMutual Private Wealth & Trust, FSB112$1.39K<0.01%+9213F-HRTimeline
HARBOR INVESTMENT ADVISORY, LLC100$1.24K<0.01%013F-HRTimeline
Gould Capital, LLC100$1.24K<0.01%013F-HRTimeline
CVA Family Office, LLC72$891<0.01%013F-HRTimeline
Parallel Advisors, LLC70$866<0.01%013F-HRTimeline
Truvestments Capital LLC68$842<0.01%013F-HRTimeline
COLDSTREAM CAPITAL MANAGEMENT INC51$632<0.01%new13F-HRTimeline
ROTHSCHILD INVESTMENT LLC45$557<0.01%+1013F-HRTimeline
Larson Financial Group LLC42$520<0.01%+1113F-HRTimeline
CIBC Private Wealth Group LLCin group CIBC Bancorp USA Inc.49$514<0.01%013F-HRTimelineGroup
Allworth Financial LP47$454<0.01%+2613F-HRTimeline
Parkside Financial Bank & Trust30$372<0.01%new13F-HRTimeline
CoreCap Advisors, LLC23$285<0.01%013F-HRTimeline
Key Financial Inc12$148<0.01%013F-HRTimeline
Lowe Wealth Advisors, LLC10$124<0.01%013F-HRTimeline
Smartleaf Asset Management LLC9$118<0.01%new13F-HRTimeline
Clearstead Advisors, LLC4$50<0.01%013F-HRTimeline
HARBOUR INVESTMENTS, INC.3$37<0.01%+213F-HRTimeline
VALLEY WEALTH MANAGERS, INC.in group VALLEY WEALTH MANAGERS, INC.3$37<0.01%013F-HRTimelineGroup
WHITTIER TRUST CO OF NEVADA INC3$37<0.01%013F-HRTimeline
CBIZ Investment Advisory Services, LLC2$25<0.01%013F-HR/ATimeline
Covestor Ltd4$00%013F-HRTimelineValue filed as zero, left out of ratios.
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.

Events

  • SCULLY WILLIAM P bought 215,000 PRTA shares between 2026-10-07 and 2026-10-08, Form 4 filed 2026-10-09. 0001045463-26-000020

    Accepted , ingested

  • SCULLY WILLIAM P bought 100,000 PRTA shares on 2026-10-02, Form 4 filed 2026-10-06. 0001045463-26-000019

    Accepted , ingested