PRTA
Prothena Corp Public Ltd Co
$9.69
+0.11 (+1.15%)
At close · Jul 2
Market Cap
$507.30M
Shares
52,353,237
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
The Jun 30, 2026 filing window is
still open — showing the latest known positions. Funds that have not filed yet
carry their prior-quarter positions; a fund that filed without this stock counts
as sold out.
Holders: 185
Total Value: $447,422,890
Total Shares: 46,031,159
Showing 1–100
of 192 holdings by value
· page 1 of 2
Institutional Ownership Trend
26 quarters
Holder Concentration
Across 185 13F filersTop Holder
16.4%
of institutional value
Top 5
45.4%
of institutional value
Top 10
60.1%
of institutional value
HHI
609
Broadly held
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mega FMR LLC | $73,397,838 | 16.40% | 7,551,218 | Shares | Defined | 2026-05-15 | ||||
| Mid Rubric Capital Management LP | $48,600,000 | 10.86% | 5,000,000 | Shares | Sole | 2026-05-15 | ||||
| Mega BlackRock, Inc. | $45,141,231 | 10.09% | 4,644,160 | Shares | Sole | 2026-05-13 | ||||
| Mega STATE STREET CORP | $18,842,200 | 4.21% | 1,938,498 | Shares | Defined | 2026-05-15 | ||||
| Mega D. E. Shaw & Co., Inc. | $17,139,732 | 3.83% | 1,763,347 | Shares | Defined | 2026-05-15 | ||||
| Mid ADAR1 Capital Management, LLC | $15,371,625 | 3.44% | 1,581,443 | Shares | Sole | 2026-05-18 | ||||
| Large ACADIAN ASSET MANAGEMENT LLC | $15,042,603 | 3.36% | 1,547,593 | Shares | Defined | 2026-05-13 | ||||
| Mega MORGAN STANLEY | $11,959,951 | 2.67% | 1,230,448 | Shares | Defined | 2026-05-15 | ||||
| Small Palo Alto Investors LP | $11,747,280 | 2.63% | 1,208,568 | Shares | Sole | 2026-05-15 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $11,722,106 | 2.62% | 1,205,978 | Shares | Sole | 2026-05-15 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $10,674,173 | 2.39% | 1,098,166 | Shares | Defined | 2026-05-15 | ||||
| Large FEDERATED HERMES, INC. | $10,301,732 | 2.30% | 1,059,849 | Shares | Defined | 2026-05-11 | ||||
| Large JACOBS LEVY EQUITY MANAGEMENT, INC | $9,448,005 | 2.11% | 972,017 | Shares | Sole | 2026-05-15 | ||||
| Mega GOLDMAN SACHS GROUP INC | $7,959,561 | 1.78% | 818,885 | Shares | Defined | 2026-05-15 | ||||
| Mega DIMENSIONAL FUND ADVISORS LP | $7,606,899 | 1.70% | 782,603 | Shares | Sole | 2026-05-07 | ||||
| Mega Nuveen, LLC | $7,381,056 | 1.65% | 759,368 | Shares | Defined | 2026-04-30 | ||||
| Large Qube Research & Technologies Ltd | $5,973,941 | 1.34% | 614,603 | Shares | Sole | 2026-05-15 | ||||
| Large RENAISSANCE TECHNOLOGIES LLC | $5,905,045 | 1.32% | 607,515 | Shares | Sole | 2026-05-14 | ||||
| Large Mariner, LLC | $5,473,157 | 1.22% | 563,082 | Shares | Sole | 2026-05-13 | ||||
| Small MONIMUS CAPITAL MANAGEMENT, LP | $4,720,197 | 1.05% | 485,617 | Shares | Sole | 2026-05-15 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $4,705,704 | 1.05% | 484,126 | Shares | Defined | 2026-05-15 | ||||
| Small Rangeley Capital, LLC | $4,368,751 | 0.98% | 449,460 | Shares | Sole | 2026-05-15 | ||||
| Small Birchview Capital, LP | $4,364,464 | 0.98% | 449,019 | Shares | Sole | 2026-05-15 | ||||
| Mid ARMISTICE CAPITAL, LLC | $4,271,074 | 0.95% | 439,411 | Shares | Sole | 2026-05-15 | ||||
| Mega CITADEL ADVISORS LLC | $4,233,779 | 0.95% | 435,574 | Shares | Defined | 2026-05-15 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $4,127,073 | 0.92% | 424,596 | Shares | Defined | 2026-05-12 | ||||
| Large Point72 Asset Management, L.P. | $3,886,347 | 0.87% | 399,830 | Shares | Defined | 2026-05-15 | ||||
| Mega BANK OF AMERICA CORP /DE/ Bank | $3,826,103 | 0.86% | 393,632 | Shares | Defined | 2026-05-18 | ||||
| Large Man Group plc | $3,708,899 | 0.83% | 381,574 | Shares | Defined | 2026-05-15 | ||||
| Mega NORTHERN TRUST CORP Bank | $3,591,947 | 0.80% | 369,542 | Shares | Defined | 2026-05-14 | ||||
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $3,466,783 | 0.77% | 356,665 | Shares | Sole | 2026-05-15 | ||||
| Mega UBS Group AG | $3,192,931 | 0.71% | 328,491 | Shares | Defined | 2026-05-05 | ||||
| Large Walleye Capital LLC | $2,694,072 | 0.60% | 277,168 | Shares | Sole | 2026-05-13 | ||||
| Small Penbrook Management LLC | $2,641,118 | 0.59% | 271,720 | Shares | Sole | 2026-04-21 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $2,474,449 | 0.55% | 254,573 | Shares | Defined | 2026-05-08 | ||||
| Large Squarepoint Ops LLC | $2,244,542 | 0.50% | 230,920 | Shares | Defined | 2026-05-15 | ||||
| Small Focused Wealth Management, Inc | $2,015,957 | 0.45% | 207,403 | Shares | Sole | 2026-04-20 | ||||
| Mega AQR CAPITAL MANAGEMENT LLC | $1,983,033 | 0.44% | 204,016 | Shares | Other | 2026-05-15 | ||||
| Large Connor, Clark & Lunn Investment Management Ltd. | $1,521,675 | 0.34% | 156,551 | Shares | Sole | 2026-05-11 | ||||
| Large Quantinno Capital Management LP | $1,402,586 | 0.31% | 144,299 | Shares | Sole | 2026-05-15 | ||||
| Mid Campbell & CO Investment Adviser LLC | $1,385,945 | 0.31% | 142,587 | Shares | Sole | 2026-05-15 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,341,360 | 0.30% | 138,000 | Call | Other | 2026-05-15 | ||||
| Mega Bank of New York Mellon Corp Bank | $1,325,048 | 0.30% | 136,322 | Shares | Defined | 2026-05-05 | ||||
| Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $1,283,534 | 0.29% | 132,051 | Shares | Defined | 2026-05-14 | ||||
| Mid Jump Financial, LLC | $1,156,057 | 0.26% | 118,936 | Shares | Defined | 2026-05-14 | ||||
| Mega JANE STREET GROUP, LLC | $1,049,039 | 0.23% | 107,926 | Shares | Defined | 2026-05-12 | ||||
| Mid Y-Intercept (Hong Kong) Ltd | $979,824 | 0.22% | 100,805 | Shares | Sole | 2026-04-27 | ||||
| Large Russell Investments Group, Ltd. | $978,090 | 0.22% | 100,627 | Shares | Other | 2026-05-08 | ||||
| Mega JANE STREET GROUP, LLC | $957,420 | 0.21% | 98,500 | Call | Defined | 2026-05-12 | ||||
| Mega PRICE T ROWE ASSOCIATES INC /MD/ | $929,708 | 0.21% | 95,649 | Shares | Defined | 2026-05-15 | ||||
| Mid XTX Topco Ltd | $897,408 | 0.20% | 92,326 | Shares | Defined | 2026-05-15 | ||||
| Mega AMERIPRISE FINANCIAL INC | $867,139 | 0.19% | 89,212 | Shares | Defined | 2026-05-15 | ||||
| Mid Hennion & Walsh Asset Management, Inc. | $860,647 | 0.19% | 88,544 | Shares | Sole | 2026-05-13 | ||||
| Mega CITADEL ADVISORS LLC | $849,528 | 0.19% | 87,400 | Put | Defined | 2026-05-15 | ||||
| Mega AMERICAN CENTURY COMPANIES INC | $774,013 | 0.17% | 79,631 | Shares | Defined | 2026-05-15 | ||||
| Large Assenagon Asset Management S.A. | $746,194 | 0.17% | 76,769 | Shares | Sole | 2026-04-20 | ||||
| Small DCF Advisers, LLC | $711,960 | 0.16% | 73,247 | Shares | Sole | 2026-05-11 | ||||
| Large Creative Planning | $709,423 | 0.16% | 72,986 | Shares | Sole | 2026-05-12 | ||||
| Small Duncan Williams Asset Management, LLC | $683,131 | 0.15% | 70,281 | Shares | Sole | 2026-05-05 | ||||
| Mega ALLIANCEBERNSTEIN L.P. | $676,580 | 0.15% | 69,607 | Shares | Defined | 2026-05-15 | ||||
| Mid MARTINGALE ASSET MANAGEMENT L P | $671,661 | 0.15% | 69,101 | Shares | Sole | 2026-05-13 | ||||
| Mid Susquehanna Portfolio Strategies, LLC | $659,696 | 0.15% | 67,870 | Shares | Sole | 2026-05-15 | ||||
| Mega HSBC HOLDINGS PLC | $632,480 | 0.14% | 65,070 | Shares | Defined | 2026-04-30 | ||||
| Mid PINNACLE ASSOCIATES LTD | $589,634 | 0.13% | 60,662 | Shares | Sole | 2026-04-22 | ||||
| Mega RHUMBLINE ADVISERS | $538,167 | 0.12% | 55,367 | Shares | Sole | 2026-05-12 | ||||
| Small Jackson Creek Investment Advisors LLC | $525,745 | 0.12% | 54,089 | Shares | Sole | 2026-05-05 | ||||
| Large Rafferty Asset Management, LLC | $517,745 | 0.12% | 53,266 | Shares | Sole | 2026-05-15 | ||||
| Mega MILLENNIUM MANAGEMENT LLC | $488,916 | 0.11% | 50,300 | Call | Sole | 2026-05-15 | ||||
| Mid Quinn Opportunity Partners LLC | $486,000 | 0.11% | 50,000 | Shares | Sole | 2026-05-15 | ||||
| Large EDGEWOOD MANAGEMENT LLC | $486,000 | 0.11% | 50,000 | Shares | Sole | 2026-05-14 | ||||
| Mega Invesco Ltd. | $484,132 | 0.11% | 49,808 | Shares | Defined | 2026-05-12 | ||||
| Mega CITADEL ADVISORS LLC | $484,056 | 0.11% | 49,800 | Call | Defined | 2026-05-15 | ||||
| Large MARSHALL WACE, LLP | $433,258 | 0.10% | 44,574 | Shares | Other | 2026-05-15 | ||||
| Mega JANE STREET GROUP, LLC | $427,680 | 0.10% | 44,000 | Put | Defined | 2026-05-12 | ||||
| Small Seven Fleet Capital Management LP | $420,876 | 0.09% | 43,300 | Shares | Sole | 2026-05-15 | ||||
| Large PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO Pension | $409,775 | 0.09% | 42,158 | Shares | Sole | 2026-05-14 | ||||
| Mega BARCLAYS PLC | $397,177 | 0.09% | 40,862 | Shares | Defined | 2026-05-15 | ||||
| Mega DEUTSCHE BANK AG\ Bank | $388,974 | 0.09% | 40,018 | Shares | Defined | 2026-05-06 | ||||
| Small FOX RUN MANAGEMENT, L.L.C. | $340,705 | 0.08% | 35,052 | Shares | Sole | 2026-05-12 | ||||
| Mid WINTON GROUP Ltd | $337,284 | 0.08% | 34,700 | Shares | Sole | 2026-05-12 | ||||
| Small Covestor Ltd | $317,426 | 0.07% | 32,657 | Shares | Sole | 2026-05-05 | ||||
| Mid GSA CAPITAL PARTNERS LLP | $315,890 | 0.07% | 32,499 | Shares | Sole | 2026-05-08 | ||||
| Mid Cornerstone Investment Partners, LLC | $298,277 | 0.07% | 30,687 | Shares | Sole | 2026-05-08 | ||||
| Large GREAT LAKES ADVISORS, LLC | $287,643 | 0.06% | 29,593 | Shares | Sole | 2026-05-12 | ||||
| Mid RBF Capital, LLC | $283,824 | 0.06% | 29,200 | Shares | Sole | 2026-05-18 | ||||
| Mega PNC FINANCIAL SERVICES GROUP, INC. | $275,911 | 0.06% | 28,386 | Shares | Defined | 2026-05-08 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $273,132 | 0.06% | 28,100 | Put | Other | 2026-05-15 | ||||
| Mega WELLS FARGO & COMPANY/MN | $265,714 | 0.06% | 27,337 | Shares | Defined | 2026-05-11 | ||||
| Small Virtus Investment Advisers, LLC | $255,830 | 0.06% | 26,320 | Shares | Other | 2026-05-14 | ||||
| Mega JPMORGAN CHASE & CO | $252,397 | 0.06% | 25,967 | Shares | Other | 2026-05-13 | ||||
| Small Purkiss Capital Advisors LLC | $243,835 | 0.05% | 25,086 | Shares | Sole | 2026-05-04 | ||||
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund | $239,490 | 0.05% | 24,639 | Shares | Defined | 2026-05-15 | ||||
| Large Trexquant Investment LP | $238,557 | 0.05% | 24,543 | Shares | Sole | 2026-05-15 | ||||
| Large TUDOR INVESTMENT CORP ET AL | $237,858 | 0.05% | 24,471 | Shares | Defined | 2026-05-15 | ||||
| Large LOS ANGELES CAPITAL MANAGEMENT LLC | $237,352 | 0.05% | 24,419 | Shares | Sole | 2026-05-08 | ||||
| Mid PROFUND ADVISORS LLC | $233,328 | 0.05% | 24,005 | Shares | Sole | 2026-04-27 | ||||
| Mid MOGY JOEL R INVESTMENT COUNSEL INC | $201,690 | 0.05% | 20,750 | Shares | Sole | 2026-04-15 | ||||
| Large MetLife Investment Management, LLC | $189,695 | 0.04% | 19,516 | Shares | Defined | 2026-05-14 | ||||
| Large JONES FINANCIAL COMPANIES LLLP | $188,655 | 0.04% | 19,409 | Shares | Sole | 2026-05-15 | ||||
| Micro Foundation Wealth Management, LLC Endowment | $186,973 | 0.04% | 19,236 | Shares | Sole | 2026-05-04 | ||||
| No holders match your search. | ||||||||||