13F

Stock

Prothena Corp Plc

Ticker not mapped · held by 184 managers

Reported value

$439.3M

Holders

184

+24 new · −22 exited

Holders’ est. mark

$6.62M

Price effect on 155 books still in the name

Largest holder

$73.4M

Fidelity

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
Fidelity7.55M$73.4M$1.28MAdded$1.28M
Rubric Capital Management LP5M$48.6M$625.1KAdded$13.5M
BlackRock, Inc.4.64M$45.1M$698.3KAdded$5.91M
State Street1.94M$18.8M$329.5KCut−$2.82M
D. E. Shaw & Co., Inc.1.76M$17.1M$285.8KAdded$1.08M
ADAR1 Capital Management, LLC1.58M$15.4M$247.8KAdded$1.45M
VANGUARD PORTFOLIO MANAGEMENT LLC1.45M$14.1MHeld
MORGAN STANLEY1.23M$12M$209.2KAdded$53.3K
Palo Alto Investors LP1.21M$11.7M$205.5KCut−$863.6K
TWO SIGMA INVESTMENTS, LP1.21M$11.7M$113.9KAdded$5.32M
GEODE CAPITAL MANAGEMENT, LLC1.1M$10.7M$181.2KAdded$522.4K
FEDERATED HERMES, INC.1.06M$10.3M$165.6KAdded$996.5K
JACOBS LEVY EQUITY MANAGEMENT, INC972K$9.45M$165.2KAdded$108K
GOLDMAN SACHS GROUP INC818.9K$7.96M$139.2KCut−$972.9K
DIMENSIONAL FUND ADVISORS LP782.6K$7.61M$131.6KAdded$203.5K
Nuveen, LLC759.4K$7.38M$129KAdded$131.6K
Qube Research & Technologies Ltd614.6K$5.97M$69.3KAdded$2.08M
Renaissance Technologies607.5K$5.91M$74KAdded$1.75M
Mariner, LLC563.1K$5.47M$95.8KCut−$46K
MONIMUS CAPITAL MANAGEMENT, LP485.6K$4.72M$43.2KAdded$2.29M
VANGUARD CAPITAL MANAGEMENT LLC484.1K$4.71MHeld
Rangeley Capital, LLC449.5K$4.37M$76.4KCut−$641.2K
Birchview Capital, LP449K$4.36M$75KAdded$152.7K
ARMISTICE CAPITAL, LLC439.4K$4.27M$74.7KCut−$10.1M
Citadel435.6K$4.23M$74KCut−$4.48M
BNP PARIBAS FINANCIAL MARKETS424.6K$4.13M$72.1KAdded$78.3K
Point72 Asset Management, L.P.399.8K$3.89M$68KCut−$4.33M
BANK OF AMERICA CORP /DE/393.6K$3.83M$66.9KCut−$255.2K
Man Group plc381.6K$3.71M$45.8KAdded$1.14M
NORTHERN TRUST CORP369.5K$3.59M$61.8KAdded$123K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC356.7K$3.47M$60.6KAdded$54.2K
UBS Group AG328.5K$3.19M$55.8KCut−$878.8K
Walleye Capital LLC277.2K$2.69M$26.5KAdded$1.2M
Penbrook Management LLC271.7K$2.64MNew
VANGUARD FIDUCIARY TRUST CO254.6K$2.47MHeld
Squarepoint Ops LLC230.9K$2.24M$37.1KAdded$162.3K
Focused Wealth Management, Inc207.4K$2.02M$18.3KAdded$989.5K
Icahn Capital204K$1.98M$31.8KAdded$199.2K
Connor, Clark & Lunn Investment Management Ltd.156.6K$1.52M$21.4KAdded$319.4K
Quantinno Capital Management LP144.3K$1.4M$17.6KAdded$413K
Campbell & CO Investment Adviser LLC142.6K$1.39M$16KAdded$486.8K
Bank of New York Mellon Corp136.3K$1.33M$22.6KAdded$57.8K
MASSACHUSETTS FINANCIAL SERVICES CO /MA/132.1K$1.28M$7.82KAdded$844.5K
Jump Financial, LLC118.9K$1.16M$20.2KCut−$1.12M
JANE STREET GROUP, LLC107.9K$1.05M$18.3KCut−$3.04M
Y-Intercept (Hong Kong) Ltd100.8K$979.8K$17.1KAdded$20K
Russell Investments Group, Ltd.100.6K$978.1K$16.9KAdded$29.3K
XTX Topco Ltd92.3K$897.4K$9.33KAdded$373.3K
AMERIPRISE FINANCIAL INC89.2K$867.1K$15.2KCut−$139.8K
Hennion & Walsh Asset Management, Inc.88.5K$860.6K$15.1KCut−$11.1K
AMERICAN CENTURY COMPANIES INC79.6K$774K$13.4KAdded$21.4K
Assenagon Asset Management S.A.76.8K$746.2K$13.1KAdded$13.1K
DCF Advisers, LLC73.2K$712K$12.5KCut−$1.16M
Creative Planning73K$709.4K$10.5KAdded$117.6K
Duncan Williams Asset Management, LLC70.3K$683.1K$58.3KAdded$58.3K
MARTINGALE ASSET MANAGEMENT L P69.1K$671.7K$10.8KAdded$65.7K
ALLIANCEBERNSTEIN L.P.69.6K$664.7K$0Held
Susquehanna Portfolio Strategies, LLC67.9K$659.7K$10KAdded$97.7K
HSBC HOLDINGS PLC65.1K$632.5K$8.87KAdded$371.8K
PINNACLE ASSOCIATES LTD60.7K$589.6K$10.3KCut−$9.38K
RHUMBLINE ADVISERS55.4K$538.2K$9.42KCut−$1.66K
Rafferty Asset Management, LLC53.3K$517.7K$9.06KCut−$270.6K
EDGEWOOD MANAGEMENT LLC50K$486K$4.09KAdded$256.2K
Quinn Opportunity Partners LLC50K$486K$8.5KAdded$8.5K
Invesco Ltd.49.8K$484.1K$4.52KAdded$230K
MARSHALL WACE, LLP44.6K$433.3K$7.58KCut−$89.9K
Seven Fleet Capital Management LP43.3K$420.9K$7.36KAdded$7.36K
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO42.2K$409.8K$7.17KAdded$7.17K
BARCLAYS PLC40.9K$397.2K$6.95KCut−$1.36M
DEUTSCHE BANK AG\40K$389K$6.03KAdded$50.1K
WINTON GROUP Ltd34.7K$337.3KNew
FOX RUN MANAGEMENT, L.L.C.35.1K$324.2K−$3.01KAdded$228.3K
Cornerstone Investment Partners, LLC30.7K$298.3KNew
GREAT LAKES ADVISORS, LLC29.6K$287.6K$2.24KAdded$161.7K
RBF Capital, LLC29.2K$283.8K$4.96KAdded$4.96K
PNC Financial Services Group, Inc.28.4K$275.9K$4.78KAdded$7.29K
WELLS FARGO & COMPANY/MN27.3K$265.7K$4.65KCut−$308.3K
Virtus Investment Advisers, LLC26.3K$255.8K$4.37KAdded$10.6K
Purkiss Capital Advisors LLC25.1K$243.8K$4.27KAdded$4.26K
JPMORGAN CHASE & CO26K$240.2K−$7.79KCut−$1.38M
Trexquant Investment LP24.5K$238.6K$3.3KAdded$53.4K
TUDOR INVESTMENT CORP ET AL24.5K$237.9K$4.16KCut−$15K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.24.6K$237.7K$3.58KCut−$2.14K
LOS ANGELES CAPITAL MANAGEMENT LLC24.4K$237.4K−$18.6KCut−$762.5K
PROFUND ADVISORS LLC24K$233.3K$4.08KCut−$59.1K
MOGY JOEL R INVESTMENT COUNSEL INC20.8K$201.7K$3.53KAdded$3.53K
MetLife Investment Management, LLC19.5K$189.7K$3.32KCut−$53.8K
Foundation Wealth Management, LLC19.2K$187KNew
JONES FINANCIAL COMPANIES LLLP19.4K$179.7K−$4.61KAdded$27.9K
Vanguard Global Advisers, LLC18.2K$177.4KHeld
SUSQUEHANNA INTERNATIONAL GROUP, LLP17.8K$172.9K$2.72KAdded$20.4K
SEI INVESTMENTS CO17.2K$167.6KNew
Chicago Partners Investment Group LLC15.4K$164.7K$11KAdded$12.5K
Ballentine Partners, LLC16.8K$163.2K$2.85KCut−$9.34K
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM15.4K$149.6K$2.62KAdded$2.62K
CHICAGO TRUST Co NA15.1K$146.4KNew
Brooklyn Investment Group15K$145.7K$2.89KAdded$31.5K
STRS OHIO14.7K$142.9K$2.5KCut−$25.2K
MERCER GLOBAL ADVISORS INC /ADV13.1K$127.3KNew
Graham Capital Management, L.P.12.8K$124.6K$2.18KCut−$140.5K
CARY STREET PARTNERS FINANCIAL LLC12.5K$121.5K$2.12KAdded$2.13K
Police & Firemen's Retirement System of New Jersey12.5K$121K$2.12KAdded$2.12K
Schonfeld Strategic Advisors LLC12.4K$120.5KNew
MANUFACTURERS LIFE INSURANCE COMPANY, THE12.2K$118.4K$2.07KCut−$12.4K
COMMONWEALTH EQUITY SERVICES, LLC11.9K$116KNew
RAYMOND JAMES FINANCIAL INC11.9K$115.5K$2.02KCut−$41.9K
INTECH INVESTMENT MANAGEMENT LLC11.9K$115.4K$2.02KCut−$81.3K
ExodusPoint Capital Management, LP11.2K$108.6K$1.9KCut−$731.7K
Inscription Capital, LLC10.5K$101.9K$1.78KAdded$139
JBF Capital, Inc.10.3K$100KNew
CWM, LLC10.3K$99.9K$98KAdded$99.8K
Savant Capital, LLC10.1K$98.5KNew
PRUDENTIAL FINANCIAL INC10K$97.4KNew
Cresset Asset Management, LLC10K$97.2KNew
Vontobel Holding Ltd.10K$97.2KNew
China Universal Asset Management Co., Ltd.9.55K$92.9K$1.49KAdded$9.08K
NEW YORK STATE COMMON RETIREMENT FUND8.98K$87.3K$1.53KAdded$1.53K
CITIGROUP INC8.15K$79.2K$1.39KCut−$38.4K
Pinnacle Wealth Planning Services, Inc.5.67K$55.1K$964Added$964
Rockefeller Capital Management L.P.5.61K$54.6K$780Added$10.7K
BROWN BROTHERS HARRIMAN & CO5K$48.6K$850Added$850
SIGNATUREFD, LLC4.73K$45.9K$613Added$11.5K
Tower Research Capital LLC (TRC)4.64K$45.1K$481Added$18.1K
Legal & General Group Plc3.97K$38.6K$676Cut−$2
Ameritas Investment Partners, Inc.3.43K$33.3K$583Added$583
GROUP ONE TRADING LLC3.42K$33.2KNew
ROYAL BANK OF CANADA3.17K$30K−$84Cut−$12K
Farther Finance Advisors, LLC2.73K$27.4K$1.17KAdded$4.18K
Mirae Asset Global Investments Co., Ltd.2.81K$27.3K$445Added$2.31K
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2.38K$23.2K$405Cut−$2.72K
Versant Capital Management, Inc2.19K$21.3K$347Added$1.79K
GAMMA Investing LLC2.15K$20.9K$86Added$16.1K
Federation des caisses Desjardins du Quebec2K$19.4K$170Added$9.89K
ACADIAN ASSET MANAGEMENT LLC1.55M$15K$246Added$1.32K
Sterling Capital Management LLC1.35K$13.1K$230Cut−$9.12K
SIMPLEX TRADING, LLC1.3K$12.7K$222Cut−$5.74K
GF FUND MANAGEMENT CO. LTD.1.2K$11.7K$180Added$1.56K
Allworth Financial LP946$9.2K$151Added$744
HighMark Wealth Management LLC900$8.75K$153Added$153
QUADRANT CAPITAL GROUP LLC841$8.18K$143Cut−$3.86K
HM PAYSON & CO600$5.83K$102Added$102
US BANCORP \DE\418$4.06K$62Added$635
OSAIC HOLDINGS, INC.372$3.61K$41Added$1.35K
Essential Partners LLC333$3.24K$57Added$57
Aster Capital Management (DIFC) Ltd256$3.17KNew
Optiver Holding B.V.297$2.89K$50Added$60
Parallel Advisors, LLC296$2.88K$31Added$1.17K
Evelyn Partners Investment Management LLP199$1.93K$34Added$34
Asset Dedication, LLC184$1.79K$31Added$31
Larson Financial Group LLC167$1.62K$5Added$1.38K
EverSource Wealth Advisors, LLC160$1.55K$15Added$695
SITTNER & NELSON, LLC155$1.51K$125Cut−$142
Johnson Financial Group, Inc.151$1.47K$25Added$25
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC131$1.27KNew
ALBION FINANCIAL GROUP /UT125$1.22K$21Added$21
NISA INVESTMENT ADVISORS, LLC112$1.09K$19Added$19
CVA Family Office, LLC109$1.06KNew
True Wealth Design, LLC103$1K$18Added$18
Gould Capital, LLC100$972$17Added$17
HARBOR INVESTMENT ADVISORY, LLC100$972$17Added$17
PRICE T ROWE ASSOCIATES INC /MD/95.6K$930$14Added$151
Arax Advisory Partners92$895$2Added$771
Keating Financial Advisory Services, Inc.76$739New
Cornerstone Financial Management LLC55$535New
Jackson Creek Investment Advisors LLC54.1K$526New
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO50$486$8Cut−$30
Root Financial Partners, LLC38$369New
Blue Trust, Inc.33$321$6Added$6
Covestor Ltd32.7K$317$4Added$109
GSA CAPITAL PARTNERS LLP32.5K$316$4Added$64
Advisory Services Network, LLC30$292New
CoreCap Advisors, LLC23$224$4Added$4
Leo H. Evart, Inc.22$214Held
Caitong International Asset Management Co., Ltd20$194$3Cut−$26
SBI Securities Co., Ltd.15$146$3Added$3
IFP Advisors, Inc15$146$3Added$3
SG Americas Securities, LLC13.5K$131$2Cut−$471
Key Financial Inc12$117$2Added$2
MAI Capital Management10$98$2Added$2
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO6.55K$64$1Added$1
Steward Partners Investment Advisory, LLC6$58$1Added$1
Clearstead Advisors, LLC4$39$1Cut−$57
HARBOUR INVESTMENTS, INC.1$10$0Held
Wealth Preservation Advisors, LLC1$10New

Who left

Positions as of Q1 2026. 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.