Prothena Corporation plc Major Shareholders & Ownership History
| Major Shareholder Name | Reporting Date | Shares Held | Market Value | Change in Shares | Ownership |
|---|---|---|---|---|---|
| FMR LLC | 11/13/2025 | 7.90 M | $77.12 M | 0.00% | 14.68% |
| BLACKROCK, INC. | 11/12/2025 | 3.60 M | $35.12 M | -8.66% | 6.69% |
| VANGUARD GROUP INC | 11/07/2025 | 2.05 M | $20.01 M | -5.81% | 3.81% |
| ARMISTICE CAPITAL, LLC | 11/17/2025 | 1.82 M | $17.80 M | -18.43% | 3.39% |
| RUBRIC CAPITAL MANAGEMENT LP | 11/14/2025 | 1.54 M | $15.03 M | 100.00% | 2.86% |
| ADAR1 CAPITAL MANAGEMENT, LLC | 11/14/2025 | 1.47 M | $14.34 M | -56.47% | 2.73% |
| PALO ALTO INVESTORS LP | 11/14/2025 | 1.32 M | $12.92 M | 3.87% | 2.46% |
| D. E. SHAW & CO., INC. | 11/14/2025 | 1.32 M | $12.84 M | 236.00% | 2.44% |
| ACADIAN ASSET MANAGEMENT LLC | 11/13/2025 | 1.24 M | $12.09 M | 21.71% | 2.30% |
| GEODE CAPITAL MANAGEMENT, LLC | 11/12/2025 | 1.02 M | $9.95 M | 9.22% | 1.89% |
| STATE STREET CORP | 11/14/2025 | 901.04 K | $8.79 M | -10.34% | 1.67% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 11/17/2025 | 876.53 K | $8.55 M | 26.46% | 1.63% |
| DIMENSIONAL FUND ADVISORS LP | 11/12/2025 | 806.99 K | $7.88 M | -16.14% | 1.50% |
| MORGAN STANLEY | 11/14/2025 | 799.67 K | $7.80 M | -16.11% | 1.49% |
| CITADEL ADVISORS LLC | 11/14/2025 | 767.11 K | $7.49 M | -33.16% | 1.43% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 11/14/2025 | 740.30 K | $7.23 M | 54.39% | 1.38% |
| JPMORGAN CHASE & CO | 11/26/2025 | 735.77 K | $7.18 M | 479.57% | 1.37% |
| FEDERATED HERMES, INC. | 11/03/2025 | 692.82 K | $6.76 M | -41.34% | 1.29% |
| NUVEEN, LLC | 11/12/2025 | 668.29 K | $6.52 M | 447.08% | 1.24% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 11/13/2025 | 654.29 K | $6.39 M | 100.00% | 1.22% |
| POINT72 ASSET MANAGEMENT, L.P. | 11/14/2025 | 646.75 K | $6.31 M | 100.00% | 1.20% |
| MILLENNIUM MANAGEMENT LLC | 11/14/2025 | 621.10 K | $6.06 M | 264.11% | 1.15% |
| JANE STREET GROUP, LLC | 11/14/2025 | 619.79 K | $6.05 M | 427.69% | 1.15% |
| MARINER, LLC | 11/14/2025 | 590.90 K | $5.77 M | 52.80% | 1.10% |
| RANGELEY CAPITAL, LLC | 11/14/2025 | 560.46 K | $5.47 M | -21.65% | 1.04% |
| BIRCHVIEW CAPITAL, LP | 11/13/2025 | 549.02 K | $5.36 M | 21.73% | 1.02% |
| ALGERT GLOBAL LLC | 11/14/2025 | 445.81 K | $4.35 M | 825.88% | 0.83% |
| TWO SIGMA INVESTMENTS, LP | 11/14/2025 | 426.61 K | $4.16 M | 111.77% | 0.79% |
| UBS GROUP AG | 11/13/2025 | 400.85 K | $3.91 M | 560.77% | 0.74% |
| RENAISSANCE TECHNOLOGIES LLC | 11/13/2025 | 371.30 K | $3.62 M | 311.64% | 0.69% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 11/14/2025 | 366.90 K | $3.58 M | -4.43% | 0.68% |
| GOLDMAN SACHS GROUP INC | 11/14/2025 | 353.22 K | $3.45 M | -33.14% | 0.66% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 11/10/2025 | 350.82 K | $3.42 M | 27.53% | 0.65% |
| NORTHERN TRUST CORP | 11/14/2025 | 334.66 K | $3.27 M | 0.03% | 0.62% |
| TREXQUANT INVESTMENT LP | 11/14/2025 | 278.98 K | $2.72 M | -49.54% | 0.52% |
| BANK OF AMERICA CORP /DE/ | 11/14/2025 | 277.10 K | $2.70 M | 31.36% | 0.51% |
| TWO SIGMA ADVISERS, LP | 11/14/2025 | 265.70 K | $2.59 M | 90.06% | 0.49% |
| MONIMUS CAPITAL MANAGEMENT, LP | 11/14/2025 | 258.06 K | $2.52 M | 24.98% | 0.48% |
| QUBE RESEARCH & TECHNOLOGIES LTD | 11/14/2025 | 254.25 K | $2.48 M | -38.71% | 0.47% |
| BNP PARIBAS ARBITRAGE, SNC | 11/13/2025 | 228.01 K | $2.23 M | 386.74% | 0.42% |
| AQR CAPITAL MANAGEMENT LLC | 11/14/2025 | 214.54 K | $2.09 M | 100.00% | 0.40% |
| DCF ADVISERS, LLC | 11/12/2025 | 200.75 K | $1.96 M | 28.27% | 0.37% |
| CUBIST SYSTEMATIC STRATEGIES, LLC | 11/14/2025 | 190.95 K | $1.86 M | -61.94% | 0.35% |
| JUMP FINANCIAL, LLC | 11/13/2025 | 186.25 K | $1.82 M | 100.00% | 0.35% |
| JANE STREET GROUP, LLC | 11/14/2025 | 178.90 K | $1.75 M | 25.10% | 0.33% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 11/14/2025 | 157.45 K | $1.54 M | 71.23% | 0.29% |
| BANK OF NEW YORK MELLON CORP | 11/03/2025 | 153.80 K | $1.50 M | 3.67% | 0.29% |
| MAN GROUP PLC | 11/14/2025 | 131.97 K | $1.29 M | 208.69% | 0.25% |
| CITADEL ADVISORS LLC | 11/14/2025 | 130.60 K | $1.27 M | -17.91% | 0.24% |
| RUSSELL INVESTMENTS GROUP, LTD. | 11/13/2025 | 127.76 K | $1.25 M | 32.81% | 0.24% |
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Prothena Corporation plc institutional Ownership - FAQ's
During the previous two years, 281 institutional investors and hedge funds held shares of Prothena Corporation plc. The most heavily invested institutionals were:
FMR LLC: 7.9 M
BlackRock, Inc.: 3.6 M
VANGUARD GROUP INC: 2.05 M
ARMISTICE CAPITAL, LLC: 1.82 M
Rubric Capital Management LP: 1.54 M
ADAR1 Capital Management, LLC: 1.47 M
79.21% of Prothena Corporation plc stock is owned by institutional investors.
Institutional investors have bought a total of 50.84 M shares in the last 24 months. This purchase volume represents approximately $567.41 M in transactions.