Prothena Corporation plc Major Shareholders & Ownership History
| Major Shareholder Name | Reporting Date | Shares Held | Market Value | Change in Shares | Ownership |
|---|---|---|---|---|---|
| FMR LLC | 02/17/2026 | 7.55 M | $72.11 M | -4.43% | 14.03% |
| BLACKROCK, INC. | 02/12/2026 | 4.11 M | $39.23 M | 14.15% | 7.63% |
| RUBRIC CAPITAL MANAGEMENT LP | 02/13/2026 | 3.68 M | $35.12 M | 138.73% | 6.83% |
| STATE STREET CORP | 02/13/2026 | 2.27 M | $21.66 M | 151.69% | 4.21% |
| VANGUARD GROUP INC | 01/29/2026 | 2.14 M | $20.45 M | 4.44% | 3.98% |
| D. E. SHAW & CO., INC. | 02/17/2026 | 1.68 M | $16.06 M | 27.82% | 3.12% |
| ARMISTICE CAPITAL, LLC | 02/17/2026 | 1.50 M | $14.33 M | -17.76% | 2.79% |
| ADAR1 CAPITAL MANAGEMENT, LLC | 02/18/2026 | 1.46 M | $13.92 M | -0.77% | 2.71% |
| ACADIAN ASSET MANAGEMENT LLC | 02/10/2026 | 1.44 M | $13.72 M | 15.99% | 2.67% |
| PALO ALTO INVESTORS LP | 02/17/2026 | 1.32 M | $12.61 M | -0.27% | 2.45% |
| MORGAN STANLEY | 02/13/2026 | 1.25 M | $11.91 M | 55.91% | 2.32% |
| GEODE CAPITAL MANAGEMENT, LLC | 02/09/2026 | 1.06 M | $10.15 M | 4.28% | 1.97% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 02/13/2026 | 978.01 K | $9.34 M | 11.58% | 1.82% |
| FEDERATED HERMES, INC. | 02/12/2026 | 974.37 K | $9.31 M | 40.64% | 1.81% |
| GOLDMAN SACHS GROUP INC | 03/25/2026 | 935.33 K | $8.93 M | 164.80% | 1.74% |
| CITADEL ADVISORS LLC | 02/17/2026 | 912.38 K | $8.71 M | 18.94% | 1.69% |
| POINT72 ASSET MANAGEMENT, L.P. | 02/17/2026 | 860.02 K | $8.21 M | 32.98% | 1.60% |
| DIMENSIONAL FUND ADVISORS LP | 02/12/2026 | 775.21 K | $7.40 M | -3.94% | 1.44% |
| NUVEEN, LLC | 02/12/2026 | 759.11 K | $7.25 M | 13.59% | 1.41% |
| TWO SIGMA INVESTMENTS, LP | 02/17/2026 | 670.14 K | $6.40 M | 57.09% | 1.24% |
| MARINER, LLC | 02/13/2026 | 577.94 K | $5.52 M | -2.19% | 1.07% |
| RANGELEY CAPITAL, LLC | 02/17/2026 | 524.60 K | $5.01 M | -6.40% | 0.97% |
| BIRCHVIEW CAPITAL, LP | 02/13/2026 | 441.02 K | $4.21 M | -19.67% | 0.82% |
| RENAISSANCE TECHNOLOGIES LLC | 02/12/2026 | 435.52 K | $4.16 M | 17.29% | 0.81% |
| JANE STREET GROUP, LLC | 02/12/2026 | 428.65 K | $4.09 M | -30.84% | 0.80% |
| TWO SIGMA ADVISERS, LP | 02/17/2026 | 427.40 K | $4.08 M | 60.86% | 0.79% |
| BANK OF AMERICA CORP /DE/ | 02/17/2026 | 427.36 K | $4.08 M | 54.23% | 0.79% |
| UBS GROUP AG | 01/29/2026 | 426.36 K | $4.07 M | 6.36% | 0.79% |
| BNP PARIBAS ARBITRAGE, SNC | 02/10/2026 | 423.96 K | $4.05 M | 85.94% | 0.79% |
| QUBE RESEARCH & TECHNOLOGIES LTD | 02/17/2026 | 407.69 K | $3.89 M | 60.35% | 0.76% |
| NORTHERN TRUST CORP | 02/17/2026 | 363.24 K | $3.47 M | 8.54% | 0.67% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 02/13/2026 | 357.34 K | $3.41 M | 1.86% | 0.66% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 02/17/2026 | 312.50 K | $2.98 M | -57.79% | 0.58% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 02/13/2026 | 298.10 K | $2.85 M | -54.44% | 0.55% |
| MAN GROUP PLC | 02/17/2026 | 269.51 K | $2.57 M | 104.22% | 0.50% |
| MONIMUS CAPITAL MANAGEMENT, LP | 02/17/2026 | 254.12 K | $2.43 M | -1.52% | 0.47% |
| JUMP FINANCIAL, LLC | 02/17/2026 | 237.83 K | $2.27 M | 27.69% | 0.44% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 02/17/2026 | 236.80 K | $2.26 M | -35.46% | 0.44% |
| SQUAREPOINT OPS LLC | 02/13/2026 | 218.04 K | $2.08 M | 71.64% | 0.41% |
| DCF ADVISERS, LLC | 02/11/2026 | 195.75 K | $1.87 M | -2.49% | 0.36% |
| AQR CAPITAL MANAGEMENT LLC | 02/17/2026 | 186.79 K | $1.78 M | -12.94% | 0.35% |
| BARCLAYS PLC | 02/13/2026 | 183.63 K | $1.75 M | 87.23% | 0.34% |
| JPMORGAN CHASE & CO | 02/11/2026 | 169.96 K | $1.62 M | -76.90% | 0.32% |
| WALLEYE CAPITAL LLC | 02/13/2026 | 156.04 K | $1.49 M | 247,574.60% | 0.29% |
| JANE STREET GROUP, LLC | 02/12/2026 | 136.10 K | $1.30 M | -23.92% | 0.25% |
| JANE STREET GROUP, LLC | 02/12/2026 | 135.00 K | $1.29 M | 67.70% | 0.25% |
| BANK OF NEW YORK MELLON CORP | 02/10/2026 | 132.70 K | $1.27 M | -13.72% | 0.25% |
| CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD. | 02/10/2026 | 125.89 K | $1.20 M | 100.00% | 0.23% |
| FOCUSED WEALTH MANAGEMENT, INC | 01/29/2026 | 107.48 K | $1.03 M | 88.13% | 0.20% |
| DIADEMA PARTNERS LP | 02/17/2026 | 106.54 K | $1.02 M | 100.00% | 0.20% |
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Prothena Corporation plc institutional Ownership - FAQ's
During the previous two years, 277 institutional investors and hedge funds held shares of Prothena Corporation plc. The most heavily invested institutionals were:
Nuveen, LLC: 759,368
UBS Group AG: 328,491
Penbrook Management LLC: 271,720
Focused Wealth Management, Inc: 207,403
Bank of New York Mellon Corp: 136,322
Y-Intercept (Hong Kong) Ltd: 100,805
87.78% of Prothena Corporation plc stock is owned by institutional investors.
Institutional investors have bought a total of 56.21 M shares in the last 24 months. This purchase volume represents approximately $551.40 M in transactions.