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Disclosery

PRTA PROTHENA CORP PLC

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Stock (common), issuer CIK 1559053

179 managers (182 13F filers) reported a position in PRTA shares at 2025-12-31, 47,253,608 shares in all. 22 filers opened a position and 25 filers sold out during the quarter.

Managers
179
13F filers
182
New
22
Added
62
Reduced
57
Sold out
25
Shares held by filers
47,253,608

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, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, 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
FMR LLCin group FMR LLC7,551,218$72.1M<0.01%-350,00013F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.4,107,459$39.2M<0.01%+509,04213F-HRTimelineGroup
Rubric Capital Management LP3,677,331$35.1M0.42%+2,136,95813F-HRTimeline
STATE STREET CORPin group STATE STREET CORP2,267,802$21.7M<0.01%+1,366,76413F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC2,140,909$20.4M<0.01%+91,06013F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,681,369$16.1M0.01%+365,95113F-HRTimelineGroup
ARMISTICE CAPITAL, LLC1,500,000$14.3M0.35%-324,00013F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC1,457,764$13.9M1.04%-11,33413F-HR/ATimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC1,437,358$13.7M0.02%+198,11613F-HRTimelineGroup
Palo Alto Investors LP1,320,510$12.6M1.76%-3,51813F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY1,246,775$11.9M<0.01%+447,10113F-HR/ATimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding1,097,538$10.5M+405,233Timeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,063,069$10.2M<0.01%+43,58613F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC978,011$9.34M0.04%+101,48313F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.974,367$9.31M0.02%+281,54913F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC935,333$8.93M<0.01%+582,11213F-HR/ATimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC912,382$8.71M0.01%+145,27713F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.860,018$8.21M0.01%+213,27213F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP775,207$7.4M<0.01%-31,78113F-HRTimelineGroup
Nuveen, LLCin group TIAA759,107$7.25M<0.01%+90,81713F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC577,938$5.52M0.01%-12,95913F-HRTimelineGroup
Rangeley Capital, LLC524,600$5.01M4.31%-35,85713F-HRTimeline
Birchview Capital, LP441,019$4.21M2.47%-108,00013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC435,515$4.16M0.01%+64,21513F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC428,651$4.09M<0.01%-191,14113F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/427,360$4.08M<0.01%+150,26413F-HRTimelineGroup
UBS Group AGin group UBS Group AG426,360$4.07M<0.01%+25,51313F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS423,955$4.05M<0.01%+195,94513F-HRTimelineGroup
Qube Research & Technologies Ltd407,689$3.89M0.01%+153,44413F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP363,241$3.47M<0.01%+28,58413F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co357,335$3.41M<0.01%+6,51413F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …298,101$2.85M<0.01%-356,19313F-HRTimelineGroup
Man Group plcin group Man Group plc269,513$2.57M<0.01%+137,54013F-HRTimelineGroup
MONIMUS CAPITAL MANAGEMENT, LP254,122$2.43M1.6%-3,93413F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC237,828$2.27M0.03%+51,58113F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC218,041$2.08M<0.01%+91,00813F-HRTimelineGroup
DCF Advisers, LLC195,747$1.87M0.62%-5,00013F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC186,785$1.78M<0.01%-27,75713F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC183,625$1.75M<0.01%+85,55013F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO169,955$1.62M<0.01%-565,81013F-HRTimelineGroup
Walleye Capital LLCin group Walleye Capital LLC156,035$1.49M0.01%+155,97213F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp132,700$1.27M<0.01%-21,10013F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…125,890$1.2M<0.01%new13F-HRTimeline
Focused Wealth Management, Inc107,479$1.03M0.11%+50,35013F-HRTimeline
DIADEMA PARTNERS LP106,539$1.02M0.61%new13F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC105,441$1.01M<0.01%-9513F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC95,406$1000K<0.01%-24,01813F-HRTimeline
Quantinno Capital Management LP103,618$990K<0.01%+2,43113F-HRTimeline
Y-Intercept (Hong Kong) Ltd100,510$960K0.02%+88,33913F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…99,350$949K<0.01%-28,40713F-HRTimelineGroup
Campbell & CO Investment Adviser LLC94,155$899K0.04%new13F-HRTimeline
Hennion & Walsh Asset Management, Inc.91,284$872K0.03%+6,68613F-HRTimeline
ExodusPoint Capital Management, LP87,990$840K0.01%+57,73613F-HRTimeline
Rafferty Asset Management, LLC82,553$788K<0.01%new13F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/81,515$779K<0.01%+2,96813F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC78,804$753K<0.01%+6,56513F-HRTimelineGroup
Assenagon Asset Management S.A.76,769$733K<0.01%-12,93513F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding74,828$715K-111,594Timeline
ALLIANCEBERNSTEIN L.P.69,607$665K<0.01%013F-HRTimeline
Duncan Williams Asset Management, LLC70,281$625K0.16%-18,05813F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P63,453$606K0.02%new13F-HRTimeline
SG Americas Securities, LLC63,018$602K<0.01%+6,29913F-HRTimeline
PINNACLE ASSOCIATES LTD62,724$599K0.01%-8,53713F-HRTimeline
Creative Planningin group Creative Planning61,969$592K<0.01%-2,17113F-HRTimelineGroup
Caption Management, LLC61,009$583K0.03%013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN60,108$574K<0.01%+19,67813F-HRTimelineGroup
RHUMBLINE ADVISERS56,527$540K<0.01%-5,51513F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd54,881$524K0.01%+39,07313F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP54,778$523K<0.01%new13F-HRTimelineGroup
Quinn Opportunity Partners LLC50,000$478K0.02%013F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources47,251$451K<0.01%-13,92113F-HRTimelineGroup
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…45,970$439K<0.01%-1,51913F-HRTimelineGroup
Seven Fleet Capital Management LP43,300$414K0.28%13F-HR/ATimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…42,158$403K<0.01%013F-HRTimeline
DekaBank Deutsche Girozentrale14,000$383K<0.01%013F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\35,482$339K<0.01%+1,70913F-HRTimelineGroup
Quadrature Capital Ltdin group Quadrature Capital Ltd31,090$297K<0.01%+3,87513F-HRTimelineGroup
PROFUND ADVISORS LLC30,616$292K0.01%new13F-HRTimeline
RBF Capital, LLC29,200$279K0.01%013F-HR/ATimeline
Persistent Asset Partners Ltd28,589$273K0.13%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…28,128$269K<0.01%+9,99113F-HRTimelineGroup
Graham Capital Management, L.P.27,756$265K0.01%-25,63713F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding27,856$265K+6,941Timeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC27,733$261K<0.01%-9,69913F-HR/ATimelineGroup
Invesco Ltd.in group Invesco Ltd.26,609$254K<0.01%-4,69413F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL26,473$253K<0.01%-60013F-HRTimeline
GSA CAPITAL PARTNERS LLP26,354$252K0.02%new13F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…25,679$245K0.07%+3,23613F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…25,501$244K<0.01%+6,13913F-HRTimelineGroup
Purkiss Capital Advisors LLC25,086$240K0.11%-30013F-HRTimeline
EDGEWOOD MANAGEMENT LLC24,060$230K<0.01%013F-HRTimeline
Polymer Capital Management (US) LLC23,513$225K0.03%new13F-HRTimeline
Headlands Technologies LLC23,352$223K0.02%new13F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC21,976$210K<0.01%-599,12313F-HRTimelineGroup
Covestor Ltd21,793$208K0.11%-9,63913F-HRTimeline
MOGY JOEL R INVESTMENT COUNSEL INC20,750$198K0.01%013F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC20,601$197K<0.01%+1,21313F-HRTimeline
Trexquant Investment LP19,384$185K<0.01%-259,59513F-HRTimeline
Ballentine Partners, LLC18,070$173K<0.01%-24013F-HRTimeline
STRS OHIO17,600$168K<0.01%-11,20013F-HRTimeline
Atom Investors LP17,026$163K0.01%-4,28913F-HRTimeline
Entropy Technologies, LP16,900$161K0.01%new13F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC16,483$157K<0.01%-5,54913F-HRTimelineGroup
Chicago Partners Investment Group LLC15,222$152K<0.01%+38113F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP15,900$152K<0.01%+1,90013F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…15,386$147K<0.01%013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …13,695$131K<0.01%-17213F-HRTimelineGroup
GREAT LAKES ADVISORS, LLC13,189$126K<0.01%-9513F-HRTimeline
CARY STREET PARTNERS FINANCIAL LLCin group CARY STREET PARTNERS ASSET MA…12,500$119K<0.01%013F-HRTimelineGroup
Police & Firemen's Retirement System of…12,453$119K<0.01%-1113F-HRTimeline
CITIGROUP INCin group CITIGROUP INC12,318$118K<0.01%+8,72613F-HRTimelineGroup
Brooklyn Investment Group12,047$114K0.01%+93413F-HRTimeline
DRW Securities, LLC11,955$114K0.01%new13F-HRTimeline
PDT Partners, LLC11,334$108K0.01%new13F-HRTimeline
Inscription Capital, LLC10,652$102K0.01%+17213F-HRTimeline
ProShare Advisors LLC10,425$99.6K<0.01%new13F-HRTimeline
CWM, LLCin group CWM, LLC10,095$96K<0.01%-15113F-HRTimelineGroup
FOX RUN MANAGEMENT, L.L.C.10,045$95.9K0.01%-34,28713F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND8,979$85.7K<0.01%013F-HRTimeline
China Universal Asset Management Co., L…8,772$83.8K0.01%-66413F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD7,100$67.8K<0.01%new13F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…6,552$63K<0.01%013F-HRTimeline
Pinnacle Wealth Planning Services, Inc.5,668$54.1K0.01%new13F-HRTimeline
BROWN BROTHERS HARRIMAN & COin group BROWN BROTHERS HARRIMAN & CO5,000$47.8K<0.01%013F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…4,590$43.8K<0.01%+18513F-HR/ATimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA4,427$42K<0.01%-5,90413F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc4,044$38.6K<0.01%+44513F-HRTimelineGroup
SIGNATUREFD, LLC3,609$34.5K<0.01%-6113F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…3,428$32.7K<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,826$27K<0.01%+1,54113F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…2,710$25.9K<0.01%+29513F-HRTimeline
Farther Finance Advisors, LLC2,434$23.2K<0.01%013F-HRTimeline
Sterling Capital Management LLC2,327$22.2K<0.01%-22013F-HRTimeline
Versant Capital Management, Inc2,044$19.5K<0.01%013F-HRTimeline
SIMPLEX TRADING, LLC1,927$18.4K<0.01%-40,11713F-HRTimeline
FLAGSHIP WEALTH ADVISORS, LLC1,500$14.3K<0.01%013F-HRTimeline
AMALGAMATED BANK1,383$13K<0.01%-5713F-HRTimeline
QUADRANT CAPITAL GROUP LLC1,260$12K<0.01%013F-HRTimeline
GF FUND MANAGEMENT CO. LTD.1,057$10.1K<0.01%-9813F-HRTimeline
Federation des caisses Desjardins du Qu…1,000$9.55K<0.01%new13F-HRTimeline
HighMark Wealth Management LLC900$8.6K<0.01%-1,10813F-HRTimeline
Allworth Financial LP885$8.45K<0.01%+2013F-HRTimeline
Torren Management, LLC884$8.44K<0.01%13F-HRTimeline
HM PAYSON & CO600$5.73K<0.01%013F-HRTimeline
GAMMA Investing LLC510$4.87K<0.01%+12413F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\359$3.43K<0.01%+4513F-HRTimelineGroup
Essential Partners LLC333$3.18K<0.01%013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.296$2.83K<0.01%-5613F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.237$2.26K<0.01%-613F-HRTimelineGroup
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.195$2K<0.01%013F-HRTimelineGroup
Evelyn Partners Investment Management L…in group Evelyn Partners Group Ltd199$1.9K<0.01%013F-HRTimelineGroup
Basecamp Wealth Advisors LLC197$1.88K<0.01%13F-HRTimeline
Asset Dedication, LLC184$1.76K<0.01%013F-HRTimeline
Parallel Advisors, LLC179$1.71K<0.01%013F-HRTimeline
SITTNER & NELSON, LLC185$1.65K<0.01%+3013F-HRTimeline
Johnson Financial Group, Inc.in group Johnson Financial Group, Inc.151$1.44K<0.01%013F-HRTimelineGroup
ALBION FINANCIAL GROUP /UT125$1.19K<0.01%013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC112$1.07K<0.01%-48013F-HRTimeline
True Wealth Design, LLC103$984<0.01%013F-HRTimeline
HARBOR INVESTMENT ADVISORY, LLC100$955<0.01%013F-HRTimeline
Gould Capital, LLC100$955<0.01%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…90$860<0.01%013F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…71$678<0.01%013F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…54$516<0.01%+413F-HR/ATimelineGroup
CIBC Private Wealth Group LLCin group CIBC Bancorp USA Inc.48$458<0.01%013F-HRTimelineGroup
Blue Trust, Inc.33$315<0.01%013F-HRTimeline
Larson Financial Group LLC26$248<0.01%+2013F-HRTimeline
CoreCap Advisors, LLC23$220<0.01%013F-HRTimeline
Caitong International Asset Management …23$220<0.01%new13F-HR/ATimeline
IFP Advisors, Inc15$143<0.01%013F-HRTimeline
SBI Securities Co., Ltd.15$143<0.01%-1413F-HRTimeline
Arax Advisory Partners13$124<0.01%-5,37113F-HRTimeline
Key Financial Inc12$115<0.01%013F-HRTimeline
Clearstead Advisors, LLC10$96<0.01%-1113F-HRTimeline
MAI Capital Management10$96<0.01%new13F-HRTimeline
Steward Partners Investment Advisory, L…6$57<0.01%013F-HRTimeline
HARBOUR INVESTMENTS, INC.1$10<0.01%013F-HRTimeline
New Millennium Group LLC1$10<0.01%new13F-HRTimeline
RESOURCES MANAGEMENT CORP /CT/ /ADV3$00%new13F-HRTimelineValue 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