Prothena Corporation plc Major Shareholders & Ownership History
| Major Shareholder Name | Reporting Date | Shares Held | Market Value | Change in Shares | Ownership |
|---|---|---|---|---|---|
| FMR LLC | 05/15/2026 | 7.55 M | $73.40 M | 0.00% | 14.03% |
| RUBRIC CAPITAL MANAGEMENT LP | 05/15/2026 | 5.00 M | $48.60 M | 35.97% | 9.29% |
| BLACKROCK, INC. | 05/13/2026 | 4.64 M | $45.14 M | 13.07% | 8.63% |
| STATE STREET CORP | 05/15/2026 | 1.94 M | $18.84 M | -14.52% | 3.60% |
| D. E. SHAW & CO., INC. | 05/15/2026 | 1.76 M | $17.14 M | 4.88% | 3.28% |
| ADAR1 CAPITAL MANAGEMENT, LLC | 05/18/2026 | 1.58 M | $15.37 M | 8.48% | 2.94% |
| ACADIAN ASSET MANAGEMENT LLC | 05/13/2026 | 1.55 M | $15.04 M | 7.67% | 2.88% |
| 05/08/2026 | 1.45 M | $14.05 M | 100.00% | 2.69% | |
| MORGAN STANLEY | 05/15/2026 | 1.23 M | $11.96 M | -1.31% | 2.29% |
| PALO ALTO INVESTORS LP | 05/15/2026 | 1.21 M | $11.75 M | -8.48% | 2.25% |
| TWO SIGMA INVESTMENTS, LP | 05/15/2026 | 1.21 M | $11.72 M | 79.96% | 2.24% |
| GEODE CAPITAL MANAGEMENT, LLC | 05/15/2026 | 1.10 M | $10.68 M | 3.30% | 2.04% |
| FEDERATED HERMES, INC. | 05/11/2026 | 1.06 M | $10.30 M | 8.77% | 1.97% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 05/15/2026 | 972.02 K | $9.45 M | -0.61% | 1.81% |
| GOLDMAN SACHS GROUP INC | 05/15/2026 | 818.89 K | $7.96 M | -12.45% | 1.52% |
| DIMENSIONAL FUND ADVISORS LP | 05/07/2026 | 782.60 K | $7.61 M | 0.95% | 1.45% |
| NUVEEN, LLC | 04/30/2026 | 759.37 K | $7.38 M | 0.03% | 1.41% |
| QUBE RESEARCH & TECHNOLOGIES LTD | 05/15/2026 | 614.60 K | $5.97 M | 50.75% | 1.14% |
| RENAISSANCE TECHNOLOGIES LLC | 05/14/2026 | 607.52 K | $5.91 M | 39.49% | 1.13% |
| MARINER, LLC | 05/13/2026 | 563.08 K | $5.47 M | -2.57% | 1.05% |
| MONIMUS CAPITAL MANAGEMENT, LP | 05/15/2026 | 485.62 K | $4.72 M | 91.10% | 0.90% |
| 05/15/2026 | 484.13 K | $4.71 M | 100.00% | 0.90% | |
| RANGELEY CAPITAL, LLC | 05/15/2026 | 449.46 K | $4.37 M | -14.32% | 0.84% |
| BIRCHVIEW CAPITAL, LP | 05/15/2026 | 449.02 K | $4.36 M | 1.81% | 0.83% |
| ARMISTICE CAPITAL, LLC | 05/15/2026 | 439.41 K | $4.27 M | -70.71% | 0.82% |
| CITADEL ADVISORS LLC | 05/15/2026 | 435.57 K | $4.23 M | -52.26% | 0.81% |
| BNP PARIBAS ARBITRAGE, SNC | 05/12/2026 | 424.60 K | $4.13 M | 0.15% | 0.79% |
| POINT72 ASSET MANAGEMENT, L.P. | 05/15/2026 | 399.83 K | $3.89 M | -53.51% | 0.74% |
| BANK OF AMERICA CORP /DE/ | 05/18/2026 | 393.63 K | $3.83 M | -7.89% | 0.73% |
| MAN GROUP PLC | 05/15/2026 | 381.57 K | $3.71 M | 41.58% | 0.71% |
| NORTHERN TRUST CORP | 05/14/2026 | 369.54 K | $3.59 M | 1.73% | 0.69% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 05/15/2026 | 356.67 K | $3.47 M | -0.19% | 0.66% |
| UBS GROUP AG | 05/05/2026 | 328.49 K | $3.19 M | -22.95% | 0.61% |
| WALLEYE CAPITAL LLC | 05/13/2026 | 277.17 K | $2.69 M | 77.63% | 0.51% |
| PENBROOK MANAGEMENT LLC | 04/21/2026 | 271.72 K | $2.64 M | 100.00% | 0.50% |
| VANGUARD FIDUCIARY TRUST CO | 05/08/2026 | 254.57 K | $2.47 M | 100.00% | 0.47% |
| SQUAREPOINT OPS LLC | 05/15/2026 | 230.92 K | $2.24 M | 5.91% | 0.43% |
| FOCUSED WEALTH MANAGEMENT, INC | 04/20/2026 | 207.40 K | $2.02 M | 92.97% | 0.39% |
| AQR CAPITAL MANAGEMENT LLC | 05/15/2026 | 204.02 K | $1.98 M | 9.23% | 0.38% |
| CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD. | 05/11/2026 | 156.55 K | $1.52 M | 24.36% | 0.29% |
| QUANTINNO CAPITAL MANAGEMENT LP | 05/15/2026 | 144.30 K | $1.40 M | 39.26% | 0.27% |
| CAMPBELL & CO INVESTMENT ADVISER LLC | 05/15/2026 | 142.59 K | $1.39 M | 51.44% | 0.26% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 05/15/2026 | 138.00 K | $1.34 M | -41.72% | 0.26% |
| BANK OF NEW YORK MELLON CORP | 05/05/2026 | 136.32 K | $1.33 M | 2.73% | 0.25% |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 05/14/2026 | 132.05 K | $1.28 M | 187.25% | 0.25% |
| JUMP FINANCIAL, LLC | 05/14/2026 | 118.94 K | $1.16 M | -49.99% | 0.22% |
| JANE STREET GROUP, LLC | 05/12/2026 | 107.93 K | $1.05 M | -74.82% | 0.20% |
| Y-INTERCEPT (HONG KONG) LTD | 04/27/2026 | 100.81 K | $979.83 K | 0.29% | 0.19% |
| RUSSELL INVESTMENTS GROUP, LTD. | 05/08/2026 | 100.63 K | $978.09 K | 1.29% | 0.19% |
| JANE STREET GROUP, LLC | 05/12/2026 | 98.50 K | $957.42 K | -27.04% | 0.18% |
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Prothena Corporation plc institutional Ownership - FAQ's
During the previous two years, 272 institutional investors and hedge funds held shares of Prothena Corporation plc. The most heavily invested institutionals were:
FMR LLC: 7.55 M
Rubric Capital Management LP: 5 M
BlackRock, Inc.: 4.64 M
STATE STREET CORP: 1.94 M
D. E. Shaw & Co., Inc.: 1.76 M
ADAR1 Capital Management, LLC: 1.58 M
87.28% of Prothena Corporation plc stock is owned by institutional investors.
Institutional investors have bought a total of 55.94 M shares in the last 24 months. This purchase volume represents approximately $548.72 M in transactions.