Skip to content
Disclosery

PRTA PROTHENA CORP PLC

Follow

Stock (common), issuer CIK 1559053

182 managers (188 13F filers) reported a position in PRTA shares at 2026-06-30, 47,260,100 shares in all. 28 filers opened a position and 23 filers sold out during the quarter.

Managers
182
13F filers
188
New
28
Added
55
Reduced
58
Sold out
23
Shares held by filers
47,260,100

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% owner2026-10-02+100,000 P$8.5724Form 4

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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 LLC7,199,218$70.5M<0.01%-352,00013F-HRTimelineGroup
Rubric Capital Management LP5,000,000$49M0.45%013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.4,867,955$47.7M<0.01%+223,79513F-HRTimelineGroup
VANGUARD GROUP INCgroup of 4 filers holding2,408,551$23.6M+205,624Timeline
STATE STREET CORPin group STATE STREET CORP2,393,424$23.4M<0.01%+454,92613F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC2,010,645$19.7M0.02%+463,05213F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,611,457$15.8M0.01%-151,89013F-HRTimelineGroup
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC1,554,535$15.2M0.72%-26,90813F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP1,264,987$12.4M0.01%+59,00913F-HRTimelineGroup
Palo Alto Investors LP1,143,155$11.2M1.55%-65,41313F-HR/ATimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,125,877$11M<0.01%+27,71113F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.1,084,401$10.6M0.02%+24,55213F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY995,348$9.74M<0.01%-235,10013F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC979,730$9.59M<0.01%+160,84513F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC965,988$9.46M0.03%-6,02913F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP905,651$8.87M<0.01%+123,04813F-HRTimelineGroup
Qube Research & Technologies Ltd791,169$7.75M0.01%+176,56613F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC697,615$6.83M0.01%+90,10013F-HRTimeline
Man Group plcin group Man Group plc678,116$6.64M0.01%+296,54213F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC625,095$6.12M0.01%+62,01313F-HRTimelineGroup
Nuveen, LLCin group TIAA557,157$5.45M<0.01%-202,21113F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP457,124$4.48M<0.01%+87,58213F-HRTimelineGroup
Birchview Capital, LP449,019$4.4M2.06%013F-HRTimeline
Rangeley Capital, LLC417,270$4.09M3.8%-32,19013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co355,896$3.48M<0.01%-76913F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC338,810$3.32M<0.01%-96,76413F-HRTimelineGroup
MONIMUS CAPITAL MANAGEMENT, LP329,052$3.22M0.82%-156,56513F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS315,803$3.09M<0.01%-108,79313F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC302,572$2.96M<0.01%+98,55613F-HRTimelineGroup
Penbrook Management LLC271,720$2.66M1.7%013F-HRTimeline
UBS Group AGgroup of 2 filers holding241,556$2.36M-87,066Timeline
MACKENZIE FINANCIAL CORP239,899$2.35M<0.01%new13F-HRTimeline
Coppell Advisory Solutions LLC12$2.33M0.25%new13F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC223,971$2.19M<0.01%-6,94913F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/208,246$2.04M<0.01%-185,38613F-HRTimelineGroup
Focused Wealth Management, Inc207,445$2.03M0.18%+4213F-HRTimeline
Connor, Clark & Lunn Investment Managem…191,693$1.88M<0.01%+35,14213F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP190,834$1.87M<0.01%+146,26013F-HRTimelineGroup
Quantinno Capital Management LP158,331$1.55M<0.01%+14,03213F-HRTimeline
DIADEMA PARTNERS LP149,482$1.46M0.52%new13F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp133,906$1.31M<0.01%-2,41613F-HRTimelineGroup
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…126,990$1.24M<0.01%-5,06113F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…121,901$1.19M<0.01%+21,27413F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/109,252$1.07M<0.01%+13,60313F-HRTimeline
Hennion & Walsh Asset Management, Inc.90,795$889K0.03%+2,25113F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC90,644$887K<0.01%+11,01313F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC87,215$854K<0.01%-1,99713F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd85,717$839K0.01%-6,60913F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding82,710$810K-2,952Timeline
ExodusPoint Capital Management, LP82,023$803K0.01%+70,85113F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P78,800$771K0.02%+9,69913F-HRTimeline
Trexquant Investment LP76,731$751K<0.01%+52,18813F-HRTimeline
DCF Advisers, LLC73,247$717K0.19%013F-HRTimeline
Invesco Ltd.in group Invesco Ltd.71,479$700K<0.01%+21,67113F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD70,326$688K<0.01%new13F-HRTimeline
Duncan Williams Asset Management, LLC70,281$688K0.16%013F-HRTimeline
ALLIANCEBERNSTEIN L.P.69,217$673K<0.01%-39013F-HRTimeline
Campbell & CO Investment Adviser LLC68,345$669K0.04%-74,24213F-HRTimeline
Assenagon Asset Management S.A.62,785$615K<0.01%-13,98413F-HR/ATimeline
Creative Planningin group Creative Planning62,620$613K<0.01%-10,36613F-HRTimelineGroup
PINNACLE ASSOCIATES LTD57,918$567K0.01%-2,74413F-HRTimeline
CITIGROUP INCin group CITIGROUP INC57,827$566K<0.01%+49,67713F-HRTimelineGroup
RHUMBLINE ADVISERS55,896$547K<0.01%+52913F-HRTimeline
Schonfeld Strategic Advisors LLC50,350$493K<0.01%+37,95113F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC49,569$492K<0.01%-15,50113F-HRTimelineGroup
EDGEWOOD MANAGEMENT LLC50,000$490K0.01%013F-HRTimeline
Quinn Opportunity Partners LLC50,000$490K0.02%013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN49,520$485K<0.01%+22,18313F-HRTimelineGroup
Seven Fleet Capital Management LP43,300$424K0.07%013F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\43,270$424K<0.01%+3,25213F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…42,158$413K<0.01%013F-HRTimeline
Engineers Gate Manager LP41,270$404K0.01%new13F-HRTimeline
Rafferty Asset Management, LLC40,397$395K<0.01%-12,86913F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…39,660$388K0.09%+13,34013F-HRTimelineGroup
SHELTON CAPITAL MANAGEMENT39,472$386K0.01%new13F-HRTimeline
Persistent Asset Partners Ltd38,100$373K0.12%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC37,623$368K<0.01%-3,23913F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO30,877$302K<0.01%+13,62913F-HRTimelineGroup
WINTON GROUP Ltdin group WINTON GROUP Ltd30,500$299K0.01%-4,20013F-HRTimelineGroup
RBF Capital, LLC29,200$286K0.01%013F-HRTimeline
GREAT LAKES ADVISORS, LLC28,733$281K<0.01%-86013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…28,386$278K<0.01%013F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding27,515$270K+68Timeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO26,620$265K<0.01%+65313F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…25,890$253K<0.01%+6,37413F-HRTimelineGroup
Aquatic Capital Management LLC25,419$249K0.01%new13F-HRTimeline
Covestor Ltd25,190$246K0.14%-7,46713F-HRTimeline
Purkiss Capital Advisors LLC25,086$246K0.09%013F-HRTimeline
TUDOR INVESTMENT CORP ET AL24,445$239K<0.01%-2613F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD24,000$235K<0.01%new13F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC22,908$224K<0.01%new13F-HRTimelineGroup
MOGY JOEL R INVESTMENT COUNSEL INC20,750$203K0.01%013F-HRTimeline
PROFUND ADVISORS LLC20,570$201K0.01%-3,43513F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP19,430$195K<0.01%+2113F-HRTimelineGroup
Savant Capital, LLC19,503$190K<0.01%+9,37213F-HRTimeline
Foundation Wealth Management, LLC19,236$188K0.11%013F-HRTimeline
Graham Capital Management, L.P.18,496$181K<0.01%+5,67613F-HRTimeline
STRS OHIO17,900$175K<0.01%+3,20013F-HRTimeline
Ballentine Partners, LLC16,793$164K<0.01%013F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…15,386$151K<0.01%013F-HRTimeline
Headlands Technologies LLC15,077$148K0.02%new13F-HRTimeline
CHICAGO TRUST Co NA15,057$147K0.02%013F-HRTimeline
Chicago Partners Investment Group LLC16,129$138K<0.01%+76413F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC13,546$133K<0.01%-105,39013F-HRTimelineGroup
nVerses Capital, LLC13,246$130K0.2%new13F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …12,635$124K<0.01%+45113F-HRTimelineGroup
CARY STREET PARTNERS ASSET MANAGEMENT L…group of 2 filers holding12,577$123K+77Timeline
Police & Firemen's Retirement System of…12,453$122K<0.01%013F-HRTimeline
Inscription Capital, LLC11,540$113K0.01%+1,06013F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV11,454$112K<0.01%-1,64013F-HR/ATimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC11,446$112K<0.01%-43813F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC11,410$112K<0.01%-52013F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC11,395$112K<0.01%+1,37013F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…11,156$103K<0.01%new13F-HRTimeline
JBF Capital, Inc.10,285$101K0.01%013F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd10,007$98K<0.01%new13F-HRTimelineGroup
Cresset Asset Management, LLC10,000$97.9K<0.01%013F-HRTimeline
Cornerstone Select Advisors, LLC10,000$97.9K0.04%new13F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND8,979$87.9K<0.01%013F-HRTimeline
China Universal Asset Management Co., L…8,332$81.6K<0.01%-1,22113F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…6,552$64K<0.01%013F-HRTimeline
Pinnacle Wealth Planning Services, Inc.5,668$55.5K0.01%013F-HRTimeline
Arax Advisory Partners5,412$53K<0.01%+5,32013F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…5,132$50.2K<0.01%-48113F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA5,208$50K<0.01%+2,03713F-HRTimelineGroup
BROWN BROTHERS HARRIMAN & COin group BROWN BROTHERS HARRIMAN & CO5,000$49K<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…4,738$46.4K<0.01%+10113F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc4,512$44.2K<0.01%+53913F-HRTimelineGroup
SIGNATUREFD, LLC4,000$39.2K<0.01%-72713F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…3,428$33.6K<0.01%013F-HRTimelineGroup
GAMMA Investing LLC2,588$25.3K<0.01%+43313F-HRTimeline
Farther Finance Advisors, LLC2,488$24.6K<0.01%-24613F-HRTimeline
Versant Capital Management, Inc2,044$20K<0.01%-14813F-HRTimeline
Quantbot Technologies LP1,611$15.8K<0.01%new13F-HRTimeline
FLAGSHIP WEALTH ADVISORS, LLC1,500$14.7K<0.01%new13F-HRTimeline
GF FUND MANAGEMENT CO. LTD.1,141$11.2K<0.01%-5813F-HRTimeline
HighMark Wealth Management LLC900$8.81K<0.01%013F-HRTimeline
Allworth Financial LP842$8.24K<0.01%-10413F-HRTimeline
Pacer Advisors, Inc.675$7K<0.01%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…613$6K<0.01%-1,77013F-HR/ATimeline
HM PAYSON & CO600$5.87K<0.01%013F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…500$4.89K<0.01%+45013F-HRTimelineGroup
Federation des caisses Desjardins du Qu…500$4.89K<0.01%-1,50013F-HRTimeline
Sterling Capital Management LLC450$4.41K<0.01%-89813F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\393$3.85K<0.01%-2513F-HRTimelineGroup
Integrated Wealth Concepts LLC341$3.34K<0.01%new13F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC337$3.3K<0.01%-24,08213F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.278$2.72K<0.01%-9413F-HRTimelineGroup
Essential Partners LLC251$2.46K<0.01%-8213F-HRTimeline
Parallel Advisors, LLC210$2.06K<0.01%-8613F-HRTimeline
Evelyn Partners Group Ltdin group Evelyn Partners Group Ltd199$1.95K<0.01%13F-HRTimelineGroup
Basecamp Wealth Advisors LLC197$1.93K<0.01%013F-HRTimeline
Asset Dedication, LLC184$1.8K<0.01%013F-HRTimeline
IFP Advisors, Inc167$1.64K<0.01%+15213F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.159$1.56K<0.01%-13813F-HRTimelineGroup
SITTNER & NELSON, LLC155$1.52K<0.01%013F-HRTimeline
Axiom Investment Management LLC146$1.43K<0.01%new13F-HRTimeline
ALBION FINANCIAL GROUP /UT125$1.22K<0.01%013F-HRTimeline
Caitong International Asset Management …115$1.13K<0.01%+9513F-HRTimeline
NISA INVESTMENT ADVISORS, LLC112$1.1K<0.01%013F-HRTimeline
CVA Family Office, LLC109$1.07K<0.01%013F-HRTimeline
CREATIVE FINANCIAL DESIGNS INC /ADV104$1.02K<0.01%new13F-HRTimeline
True Wealth Design, LLC103$1.01K<0.01%013F-HRTimeline
HARBOR INVESTMENT ADVISORY, LLC100$979<0.01%013F-HRTimeline
Gould Capital, LLC100$979<0.01%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…98$959<0.01%-6213F-HRTimelineGroup
Quarry LP90$881<0.01%new13F-HRTimeline
Cornerstone Financial Management LLC55$538<0.01%013F-HR/ATimeline
Silver Grove Financial Group, Inc.39$382<0.01%new13F-HRTimeline
Blue Trust, Inc.33$323<0.01%013F-HRTimeline
Larson Financial Group LLC27$264<0.01%-14013F-HRTimeline
Leo H. Evart, Inc.22$215<0.01%013F-HRTimeline
SBI Securities Co., Ltd.15$147<0.01%013F-HRTimeline
Key Financial Inc12$117<0.01%013F-HRTimeline
CoreCap Advisors, LLC11$108<0.01%-1213F-HRTimeline
ROTHSCHILD INVESTMENT LLC10$98<0.01%new13F-HRTimeline
IFG Advisory, LLC7$69<0.01%new13F-HRTimeline
Clearstead Advisors, LLC4$40<0.01%013F-HRTimeline
Steward Partners Investment Advisory, L…4$39<0.01%-213F-HRTimeline
SJS Investment Consulting Inc.3$30<0.01%new13F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC2$20<0.01%new13F-HRTimelineGroup
HARBOUR INVESTMENTS, INC.1$10<0.01%013F-HRTimeline

Events

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

    Accepted , ingested