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Disclosery

PRTA PROTHENA CORP PLC

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Stock (common), issuer CIK 1559053

185 managers (190 13F filers) reported a position in PRTA shares at 2025-06-30, 41,766,103 shares in all. 51 filers opened a position and 22 filers sold out during the quarter.

Managers
185
13F filers
190
New
51
Added
54
Reduced
41
Sold out
22
Shares held by filers
41,766,103

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, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, 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
FMR LLCin group FMR LLC7,901,218$48M<0.01%-40,18413F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.3,939,398$23.9M<0.01%-102,90313F-HRTimelineGroup
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC3,375,009$20.5M3.33%new13F-HRTimelineGroup
ARMISTICE CAPITAL, LLC2,236,000$13.6M0.51%+40,00013F-HRTimeline
VANGUARD GROUP INCin group VANGUARD GROUP INC2,176,227$13.2M<0.01%+906,95613F-HRTimelineGroup
Palo Alto Investors LP1,274,753$7.74M1.65%-384,98113F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.1,181,087$7.17M0.01%+634,83213F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,147,622$6.97M0.01%+1,058,22313F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC1,018,177$6.18M0.01%new13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,005,002$6.1M<0.01%-516,36213F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP962,339$5.84M<0.01%+99,19113F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY953,256$5.79M<0.01%+233,26813F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC933,446$5.67M<0.01%-81,34613F-HRTimelineGroup
Rangeley Capital, LLC715,367$4.34M5.45%new13F-HRTimeline
JACOBS LEVY EQUITY MANAGEMENT, INC693,154$4.21M0.02%+674,60113F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management575,792$3.5M0.01%new13F-HRTimelineGroup
Trexquant Investment LP552,826$3.36M0.04%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC528,323$3.21M<0.01%+17,86113F-HRTimelineGroup
Cubist Systematic Strategies, LLC501,764$3.05M0.03%new13F-HRTimeline
Rock Springs Capital Management LP492,601$2.99M0.19%013F-HRTimeline
Granahan Investment Management, LLC461,082$2.8M0.11%new13F-HRTimeline
Birchview Capital, LP451,019$2.74M2.72%+118,04513F-HRTimeline
Qube Research & Technologies Ltd414,828$2.52M<0.01%new13F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.391,495$2.38M<0.01%+373,69213F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC386,708$2.35M<0.01%+32,05813F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding341,250$2.07M+325,217Timeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP334,554$2.03M<0.01%-39,14913F-HRTimelineGroup
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …311,605$1.92M<0.01%+3,61813F-HRTimelineGroup
Schonfeld Strategic Advisors LLC307,341$1.87M0.01%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co275,084$1.67M<0.01%-44,52313F-HRTimelineGroup
Prosight Management, LP267,800$1.63M0.4%-140,32213F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/210,945$1.28M<0.01%+78,95913F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP210,555$1.28M0.09%new13F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC209,249$1.27M<0.01%new13F-HR/ATimelineGroup
MONIMUS CAPITAL MANAGEMENT, LP206,475$1.25M1.01%new13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 3 filers holding201,209$1.22M+49,194Timeline
UBS Group AGgroup of 2 filers holding199,948$1.21M-426,183Timeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC170,579$1.04M<0.01%+118,11213F-HRTimelineGroup
DCF Advisers, LLC156,500$950K0.46%-38,50013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC151,543$920K<0.01%new13F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp148,350$900K<0.01%+2,34113F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO126,951$771K<0.01%-245,01413F-HRTimelineGroup
Nuveen, LLCin group TIAA122,155$741K<0.01%-27,80613F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC117,453$713K<0.01%-15,18713F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC115,848$703K<0.01%+32,46713F-HR/ATimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…107,839$655K<0.01%-5,091,68913F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA105,939$643K<0.01%+101,62113F-HR/ATimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD103,996$631K<0.01%new13F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…96,196$584K<0.01%+95,00213F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC90,200$548K<0.01%-149,70013F-HRTimeline
Duncan Williams Asset Management, LLC88,339$536K0.17%013F-HR/ATimeline
ALLIANCEBERNSTEIN L.P.87,587$532K<0.01%+40,83413F-HRTimeline
Hennion & Walsh Asset Management, Inc.86,154$523K0.02%+8,51713F-HRTimeline
PINNACLE ASSOCIATES LTD74,079$450K0.01%-26,18013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/71,047$432K<0.01%-3,384,80913F-HRTimeline
Monaco Asset Management SAM70,000$425K0.16%new13F-HRTimeline
Caption Management, LLC65,100$395K0.04%new13F-HRTimeline
RHUMBLINE ADVISERS63,005$382K<0.01%-3,07413F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC59,965$364K<0.01%+25,12913F-HRTimelineGroup
Quantinno Capital Management LP59,618$362K<0.01%new13F-HRTimeline
ExodusPoint Capital Management, LP58,918$358K<0.01%+17,64613F-HRTimeline
NORGES BANK57,454$349K<0.01%013F-HRTimeline
Swiss National Bank56,500$343K<0.01%-12,20013F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources56,078$340K<0.01%+36,33113F-HRTimelineGroup
SG Americas Securities, LLC51,941$315K<0.01%-20,61813F-HRTimeline
Creative Planningin group Creative Planning50,569$307K<0.01%+39,87913F-HRTimelineGroup
Quinn Opportunity Partners LLC50,000$304K0.03%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC49,303$299K<0.01%-16,52313F-HRTimelineGroup
ALGERT GLOBAL LLC48,150$292K0.01%new13F-HR/ATimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS46,844$284K<0.01%+37,26713F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC46,047$282K<0.01%+32,95913F-HRTimelineGroup
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…44,364$269K<0.01%+54813F-HRTimelineGroup
SIMPLEX TRADING, LLC43,264$262K0.01%new13F-HRTimeline
Man Group plcin group Man Group plc42,752$260K<0.01%+25,75213F-HRTimelineGroup
Covestor Ltd42,295$257K0.15%+42,29113F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…42,158$256K<0.01%new13F-HRTimeline
PDT Partners, LLC41,281$251K0.01%-109,03513F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN41,220$250K<0.01%-4,66913F-HRTimelineGroup
Engineers Gate Manager LP40,967$249K<0.01%new13F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\39,601$240K<0.01%-56,20913F-HRTimelineGroup
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…38,626$234K<0.01%013F-HR/ATimelineGroup
Invesco Ltd.in group Invesco Ltd.36,885$224K<0.01%-75313F-HRTimelineGroup
Graham Capital Management, L.P.34,042$207K0.01%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…33,243$202K<0.01%013F-HRTimeline
DARK FOREST CAPITAL MANAGEMENT LP32,866$199K0.01%+11,80713F-HRTimeline
GROUP ONE TRADING LLC32,258$196K0.01%new13F-HRTimeline
Focused Wealth Management, Inc32,129$195K0.02%013F-HRTimeline
RBF Capital, LLC29,200$177K0.01%013F-HRTimeline
ALPS ADVISORS INCin group ALPS ADVISORS INC29,028$176K<0.01%-8,92813F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL27,999$170K<0.01%new13F-HRTimeline
Cambridge Investment Research Advisors,…27,311$166K<0.01%+17,14713F-HRTimeline
SHERBROOKE PARK ADVISERS LLC27,221$165K0.07%new13F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…25,402$154K<0.01%013F-HRTimelineGroup
Purkiss Capital Advisors LLC24,904$151K0.08%+3,27513F-HRTimeline
EDGEWOOD MANAGEMENT LLC24,060$146K<0.01%013F-HRTimeline
Point72 (DIFC) Ltd23,946$145K0.01%new13F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd23,752$144K<0.01%new13F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding23,297$141K-5,838Timeline
Nebula Research & Development LLC22,857$139K0.01%new13F-HRTimeline
Ensign Peak Advisors, Inc21,643$131K<0.01%013F-HRTimeline
Handelsbanken Fonder AB20,900$127K<0.01%013F-HRTimeline
MOGY JOEL R INVESTMENT COUNSEL INC20,750$126K0.01%new13F-HRTimeline
Foundation Wealth Management, LLC19,471$118K0.08%013F-HRTimeline
Connor, Clark & Lunn Investment Managem…18,896$115K<0.01%-72,58613F-HRTimeline
OPPENHEIMER & CO INCin group OPPENHEIMER ASSET MANAGEMENT …18,595$113K<0.01%new13F-HRTimelineGroup
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…18,547$113K0.04%+6,65613F-HRTimelineGroup
Voleon Capital Management LP18,536$113K0.01%new13F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC18,374$112K<0.01%-15,00113F-HRTimeline
Jain Global LLC18,262$111K<0.01%new13F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson18,047$110K<0.01%013F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…18,028$109K<0.01%+17,54013F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC16,702$101K<0.01%new13F-HRTimeline
Chicago Partners Investment Group LLC14,759$99.8K<0.01%+24713F-HRTimeline
STRS OHIO16,400$99.5K<0.01%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…15,568$94.5K<0.01%-47213F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…15,386$93.4K<0.01%013F-HRTimeline
SHELTON CAPITAL MANAGEMENT15,279$92.7K<0.01%+4613F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …15,140$91.9K<0.01%-50,09113F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP14,000$85.1K<0.01%new13F-HRTimelineGroup
Corton Capital Inc.13,964$84.8K0.1%new13F-HRTimeline
DekaBank Deutsche Girozentrale14,000$84K<0.01%013F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC13,496$81.9K<0.01%+1,00913F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…12,709$77.1K<0.01%+10,81513F-HRTimelineGroup
CARY STREET PARTNERS FINANCIAL LLCin group CARY STREET PARTNERS ASSET MA…12,500$75.9K<0.01%013F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC11,896$72.2K<0.01%+21213F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC11,820$72K<0.01%-1,50013F-HRTimeline
TWO SIGMA SECURITIES, LLC11,683$70.9K0.01%new13F-HRTimeline
Coastal Bridge Advisors, LLC11,433$69.4K0.01%new13F-HRTimeline
Brooklyn Investment Group11,113$67.5K0.01%+9,35913F-HR/ATimeline
China Universal Asset Management Co., L…10,811$65.6K0.01%+1413F-HRTimeline
Police & Firemen's Retirement System of…10,113$61.4K<0.01%013F-HRTimeline
Prospera Financial Services Inc10,000$60.7K<0.01%new13F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc9,323$56.6K<0.01%-32,03113F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\9,031$54.8K<0.01%+8,51913F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND8,979$54.5K<0.01%-5,30013F-HR/ATimeline
KLP KAPITALFORVALTNING AS6,700$40.7K<0.01%013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…6,552$40K<0.01%013F-HRTimeline
BROWN BROTHERS HARRIMAN & COin group BROWN BROTHERS HARRIMAN & CO5,000$30.4K<0.01%new13F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…4,368$26.5K<0.01%013F-HRTimelineGroup
SIGNATUREFD, LLC3,357$20.4K<0.01%+2,99713F-HRTimeline
Farther Finance Advisors, LLC2,457$14.9K<0.01%+1,49013F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC2,058$12.5K<0.01%new13F-HRTimelineGroup
Versant Capital Management, Inc2,044$12.4K<0.01%+1,51313F-HRTimeline
HighMark Wealth Management LLC2,018$12.2K0.01%013F-HRTimeline
FLAGSHIP WEALTH ADVISORS, LLC1,500$9.11K<0.01%new13F-HRTimeline
AMALGAMATED BANK1,440$9K<0.01%013F-HRTimeline
GF FUND MANAGEMENT CO. LTD.1,377$8.36K<0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC1,366$8K<0.01%+73113F-HRTimelineGroup
SBI Securities Co., Ltd.962$5.84K<0.01%013F-HRTimeline
Sterling Capital Management LLC959$5.82K<0.01%+62813F-HR/ATimeline
IFP Advisors, Inc0$5.54K<0.01%-13213F-HRTimelineAmount filed as zero, left out of ratios.
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …683$4K<0.01%new13F-HRTimelineGroup
HM PAYSON & CO600$3.64K<0.01%013F-HRTimeline
Parallel Advisors, LLC593$3.6K<0.01%+52313F-HRTimeline
NISA INVESTMENT ADVISORS, LLC526$3.19K<0.01%-71113F-HRTimeline
Point72 Asia (Singapore) Pte. Ltd.459$2.79K<0.01%new13F-HRTimeline
Allworth Financial LP372$2.26K<0.01%+32513F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK324$1.97K<0.01%new13F-HRTimelineGroup
Manchester Capital Management LLC250$1.52K<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.247$1.5K<0.01%+8613F-HR/ATimelineGroup
Spire Wealth Managementin group Spire Wealth Management200$1.21K<0.01%013F-HRTimelineGroup
Evelyn Partners Investment Management L…in group Evelyn Partners Group Ltd199$1.21K<0.01%013F-HR/ATimelineGroup
GAMMA Investing LLC197$1.2K<0.01%-28813F-HRTimeline
Asset Dedication, LLC184$1.12K<0.01%013F-HRTimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.195$1K<0.01%013F-HRTimelineGroup
North Capital, Inc.159$965<0.01%013F-HRTimeline
MAI Capital Management155$941<0.01%new13F-HRTimeline
SITTNER & NELSON, LLC155$941<0.01%013F-HRTimeline
ALBION FINANCIAL GROUP /UT125$759<0.01%013F-HRTimeline
HARBOR INVESTMENT ADVISORY, LLC100$607<0.01%013F-HRTimeline
Gould Capital, LLC100$607<0.01%013F-HRTimeline
CVA Family Office, LLC72$437<0.01%013F-HRTimeline
Truvestments Capital LLC69$418<0.01%+113F-HRTimeline
CIBC Private Wealth Group LLCin group CIBC Bancorp USA Inc.49$297<0.01%013F-HRTimelineGroup
Blue Trust, Inc.33$200<0.01%-67813F-HRTimeline
CoreCap Advisors, LLC23$140<0.01%013F-HRTimeline
Key Financial Inc12$73<0.01%013F-HRTimeline
Lowe Wealth Advisors, LLC10$61<0.01%013F-HRTimeline
Steward Partners Investment Advisory, L…6$36<0.01%new13F-HRTimeline
Clearstead Advisors, LLC4$25<0.01%013F-HRTimeline
WHITTIER TRUST CO OF NEVADA INC3$18<0.01%013F-HRTimeline
CBIZ Investment Advisory Services, LLC2$12<0.01%013F-HRTimeline
Koesten, Hirschmann & Crabtree, INC.1$9<0.01%new13F-HRTimeline
HARBOUR INVESTMENTS, INC.1$6<0.01%-213F-HRTimeline
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