13F

Stock

Prothena Corp Plc

Ticker not mapped · held by 181 managers

Reported value

$435.5M

Holders

181

+1 new · −1 exited

Holders’ est. mark

−$253.1K

Price effect on 8 books still in the name

Largest holder

$72.1M

Fidelity

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
Fidelity7.55M$72.1M—Held
BlackRock, Inc.4.11M$39.2M—Held
Rubric Capital Management LP3.68M$35.1M—Held
State Street2.27M$21.7M—Held
Vanguard2.14M$20.4M—Held
D. E. Shaw & Co., Inc.1.68M$16.1M—Held
ARMISTICE CAPITAL, LLC1.5M$14.3M—Held
ADAR1 Capital Management, LLC1.46M$13.9M—Held
Palo Alto Investors LP1.32M$12.6M—Held
MORGAN STANLEY1.25M$11.9M−$167.9KAdded$4.1M
GEODE CAPITAL MANAGEMENT, LLC1.06M$10.2M—Held
JACOBS LEVY EQUITY MANAGEMENT, INC978K$9.34M—Held
FEDERATED HERMES, INC.974.4K$9.31M—Held
GOLDMAN SACHS GROUP INC935.3K$8.93M—Held
Citadel912.4K$8.71M—Held
Point72 Asset Management, L.P.860K$8.21M—Held
DIMENSIONAL FUND ADVISORS LP775.2K$7.4M—Held
Nuveen, LLC759.1K$7.25M—Held
TWO SIGMA INVESTMENTS, LP670.1K$6.4M—Held
Mariner, LLC577.9K$5.52M—Held
Rangeley Capital, LLC524.6K$5.01M—Held
Birchview Capital, LP441K$4.21M—Held
Renaissance Technologies435.5K$4.16M—Held
JANE STREET GROUP, LLC428.7K$4.09M—Held
TWO SIGMA ADVISERS, LP427.4K$4.08M—Held
BANK OF AMERICA CORP /DE/427.4K$4.08M−$58.2KAdded$1.38M
UBS Group AG426.4K$4.07M—Held
BNP PARIBAS FINANCIAL MARKETS424K$4.05M—Held
Qube Research & Technologies Ltd407.7K$3.89M—Held
NORTHERN TRUST CORP363.2K$3.47M—Held
CHARLES SCHWAB INVESTMENT MANAGEMENT INC357.3K$3.41M—Held
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP298.1K$2.85M—Held
Man Group plc269.5K$2.57M—Held
MONIMUS CAPITAL MANAGEMENT, LP254.1K$2.43M—Held
Jump Financial, LLC237.8K$2.27M—Held
Squarepoint Ops LLC218K$2.08M—Held
DCF Advisers, LLC195.7K$1.87M—Held
Icahn Capital186.8K$1.78M—Held
BARCLAYS PLC183.6K$1.75M−$20.6KAdded$796.4K
JPMORGAN CHASE & CO170K$1.62M—Held
Walleye Capital LLC156K$1.49M—Held
Bank of New York Mellon Corp132.7K$1.27M—Held
Connor, Clark & Lunn Investment Management Ltd.125.9K$1.2M—Held
Focused Wealth Management, Inc107.5K$1.03M—Held
DIADEMA PARTNERS LP106.5K$1.02M—Held
AMERIPRISE FINANCIAL INC105.4K$1.01M—Held
LOS ANGELES CAPITAL MANAGEMENT LLC95.4K$999.9K—Held
Quantinno Capital Management LP103.6K$989.6K—Held
Y-Intercept (Hong Kong) Ltd100.5K$959.9K—Held
Russell Investments Group, Ltd.99.3K$948.8K—Held
Campbell & CO Investment Adviser LLC94.2K$899.2K—Held
Hennion & Walsh Asset Management, Inc.91.3K$871.8K—Held
ExodusPoint Capital Management, LP88K$840.3K—Held
Rafferty Asset Management, LLC82.6K$788.4K—Held
AMERICAN CENTURY COMPANIES INC78.8K$752.6K—Held
Assenagon Asset Management S.A.76.8K$733.1K—Held
ALLIANCEBERNSTEIN L.P.69.6K$664.7K—Held
Duncan Williams Asset Management, LLC70.3K$624.8K—Held
MARTINGALE ASSET MANAGEMENT L P63.5K$606K—Held
PINNACLE ASSOCIATES LTD62.7K$599K—Held
Creative Planning62K$591.8K—Held
Caption Management, LLC61K$582.6K—Held
WELLS FARGO & COMPANY/MN60.1K$574K—Held
Susquehanna Portfolio Strategies, LLC58.9K$562K—Held
RHUMBLINE ADVISERS56.5K$539.8K—Held
XTX Topco Ltd54.9K$524.1K—Held
MARSHALL WACE, LLP54.8K$523.1K—Held
Quinn Opportunity Partners LLC50K$477.5K—Held
FRANKLIN RESOURCES INC47.3K$451.2K—Held
MASSACHUSETTS FINANCIAL SERVICES CO /MA/46K$439K—Held
Seven Fleet Capital Management LP43.3K$413.5K—Held
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO42.2K$402.6K—Held
DEUTSCHE BANK AG\35.5K$338.9K—Held
Quadrature Capital Ltd31.1K$296.9K—Held
PROFUND ADVISORS LLC30.6K$292.4K—Held
RBF Capital, LLC29.2K$278.9K—Held
Persistent Asset Partners Ltd28.6K$273K—New
PNC Financial Services Group, Inc.28.1K$268.6K—Held
Graham Capital Management, L.P.27.8K$265.1K—Held
HSBC HOLDINGS PLC27.7K$260.7K—Held
Invesco Ltd.26.6K$254.1K—Held
TUDOR INVESTMENT CORP ET AL26.5K$252.8K−$5.56KCut−$11.4K
Virtus Investment Advisers, LLC25.7K$245.2K—Held
MetLife Investment Management, LLC25.5K$243.5K—Held
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.25.2K$239.9K—Held
Purkiss Capital Advisors LLC25.1K$239.6K—Held
EDGEWOOD MANAGEMENT LLC24.1K$229.8K—Held
Polymer Capital Management (US) LLC23.5K$224.5K—Held
Headlands Technologies LLC23.4K$223K—Held
MILLENNIUM MANAGEMENT LLC22K$209.9K—Held
MOGY JOEL R INVESTMENT COUNSEL INC20.8K$198.2K—Held
INTECH INVESTMENT MANAGEMENT LLC20.6K$196.7K—Held
Trexquant Investment LP19.4K$185.1K—Held
Ballentine Partners, LLC18.1K$172.6K—Held
STRS OHIO17.6K$168.1K—Held
Atom Investors LP17K$162.6K—Held
Entropy Technologies, LP16.9K$161.4K—Held
RAYMOND JAMES FINANCIAL INC16.5K$157.4K—Held
SUSQUEHANNA INTERNATIONAL GROUP, LLP16K$152.6K—Held
Chicago Partners Investment Group LLC15.2K$152.2K—Held
JONES FINANCIAL COMPANIES LLLP15.9K$151.8K—Held
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM15.4K$146.9K—Held
MANUFACTURERS LIFE INSURANCE COMPANY, THE13.7K$130.8K—Held
GREAT LAKES ADVISORS, LLC13.2K$126K—Held
CARY STREET PARTNERS FINANCIAL LLC12.5K$119.4K—Held
Police & Firemen's Retirement System of New Jersey12.5K$118.9K—Held
CITIGROUP INC12.3K$117.6K—Held
Brooklyn Investment Group12K$114.2K—Held
DRW Securities, LLC12K$114.2K—Held
PDT Partners, LLC11.3K$108.2K—Held
Inscription Capital, LLC10.7K$101.7K—Held
ProShare Advisors LLC10.4K$99.6K—Held
FOX RUN MANAGEMENT, L.L.C.10K$95.9K—Held
NEW YORK STATE COMMON RETIREMENT FUND8.98K$85.7K—Held
China Universal Asset Management Co., Ltd.8.77K$83.8K—Held
CANADA PENSION PLAN INVESTMENT BOARD7.1K$67.8K—Held
Pinnacle Wealth Planning Services, Inc.5.67K$54.1K—Held
BROWN BROTHERS HARRIMAN & CO5K$47.8K—Held
Rockefeller Capital Management L.P.4.59K$43.8K—Held
ROYAL BANK OF CANADA4.43K$42K—Held
Legal & General Group Plc4.04K$38.6K—Held
SIGNATUREFD, LLC3.61K$34.5K—Held
Ameritas Investment Partners, Inc.3.43K$32.7K—Held
Tower Research Capital LLC (TRC)2.83K$27K—Held
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2.71K$25.9K—Held
Mirae Asset Global Investments Co., Ltd.2.62K$25K—Held
Farther Finance Advisors, LLC2.43K$23.2K—Held
Sterling Capital Management LLC2.33K$22.2K—Held
Versant Capital Management, Inc2.04K$19.5K—Held
SIMPLEX TRADING, LLC1.93K$18.4K—Held
FLAGSHIP WEALTH ADVISORS, LLC1.5K$14.3K—Held
ACADIAN ASSET MANAGEMENT LLC1.44M$13.7K—Held
QUADRANT CAPITAL GROUP LLC1.26K$12K—Held
GF FUND MANAGEMENT CO. LTD.1.06K$10.1K—Held
Federation des caisses Desjardins du Quebec1K$9.55K—Held
HighMark Wealth Management LLC900$8.6K—Held
Allworth Financial LP885$8.45K−$182Added$9
Torren Management, LLC884$8.44K—Held
HM PAYSON & CO600$5.73K—Held
GAMMA Investing LLC510$4.87K—Held
US BANCORP \DE\359$3.43K—Held
Essential Partners LLC333$3.18K−$70Cut−$70
Optiver Holding B.V.296$2.83K—Held
OSAIC HOLDINGS, INC.237$2.26K—Held
Evelyn Partners Investment Management LLP199$1.9K−$563Cut−$563
Asset Dedication, LLC184$1.76K—Held
Parallel Advisors, LLC179$1.71K—Held
SITTNER & NELSON, LLC185$1.65K—Held
Johnson Financial Group, Inc.151$1.44K—Held
ALBION FINANCIAL GROUP /UT125$1.19K—Held
NISA INVESTMENT ADVISORS, LLC112$1.07K—Held
True Wealth Design, LLC103$984—Held
Gould Capital, LLC100$955—Held
HARBOR INVESTMENT ADVISORY, LLC100$955—Held
EverSource Wealth Advisors, LLC90$860—Held
PRICE T ROWE ASSOCIATES INC /MD/81.5K$779—Held
Zurcher Kantonalbank (Zurich Cantonalbank)71$678—Held
SG Americas Securities, LLC63K$602—Held
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO54$516—Held
CIBC Private Wealth Group LLC48$458—Held
DekaBank Deutsche Girozentrale14K$383—Held
Blue Trust, Inc.33$315—Held
GSA CAPITAL PARTNERS LLP26.4K$252—Held
Larson Financial Group LLC26$248—Held
Caitong International Asset Management Co., Ltd23$220—Held
CoreCap Advisors, LLC23$220—Held
Covestor Ltd21.8K$208—Held
SBI Securities Co., Ltd.15$143—Held
IFP Advisors, Inc15$143−$3Cut−$3
Arax Advisory Partners13$124—Held
Key Financial Inc12$115—Held
Clearstead Advisors, LLC10$96—Held
MAI Capital Management10$96—Held
CWM, LLC10.1K$96—Held
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO6.55K$63—Held
Steward Partners Investment Advisory, LLC6$57—Held
AMALGAMATED BANK1.38K$13—Held
HARBOUR INVESTMENTS, INC.1$10—Held
New Millennium Group LLC1$10—Held
Daiwa Securities Group Inc.195$2—Held
RESOURCES MANAGEMENT CORP /CT/ /ADV3$0—Held

Who left

Positions as of Q4 2025. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.