Prothena Corp Public Ltd Co
PRTA- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001559053
In the last 90 days, Prothena Corp Public Ltd Co insiders filed 4 open-market purchases and 2 sales; 187 institutions reported holding it in 13F filings for Q2 2026, worth $462.7M in total; no superinvestor holds it.
13F holders, Q4 2023
Institutional positions in Prothena Corp Public Ltd Co as of Dec 31, 2023. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 187
- +2 vs. Q3 2023
- Shares held
- 53.6M
- +627.6K (+1.2%) vs. Q3 2023
- Total value
- $1.95B
- −$606.9M (−23.8%) vs. Q3 2023
- New holders
- 40
- 68 more added
- Sold out
- 38
- 46 more reduced
2 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2023: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PRTA on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 187 | $462.7M |
| Q1 2026 | 186 | $459.5M |
| Q4 2025 | 182 | $451.6M |
| Q3 2025 | 187 | $415.8M |
| Q2 2025 | 189 | $253.6M |
| Q1 2025 | 161 | $647.2M |
| Q4 2024 | 171 | $741.3M |
| Q3 2024 | 164 | $855.8M |
| Q2 2024 | 160 | $1.05B |
| Q1 2024 | 169 | $1.33B |
| Q4 2023 | 187 | $1.95B |
| Q3 2023 | 187 | $2.56B |
| Q2 2023 | 196 | $3.54B |
| Q1 2023 | 192 | $2.51B |
| Q4 2022 | 201 | $2.98B |
| Q3 2022 | 183 | $2.69B |
| Q2 2022 | 167 | $1.21B |
| Q1 2022 | 174 | $1.61B |
| Q4 2021 | 196 | $2.12B |
| Q3 2021 | 192 | $2.92B |
| Q2 2021 | 156 | $2.08B |
| Q1 2021 | 146 | $1.00B |
Institutions, Q4 2023
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Principal Financial Group Inc | 30,973 | $1.13M | 0.00% | +5,391+21.1% | Added |
| Man Group plc | 32,404 | $1.18M | 0.00% | – | – |
| State of Wisconsin Investment Board | 32,757 | $1.19M | 0.00% | −12,015−26.8% | Reduced |
| Susquehanna International Group, LLP | 33,597 | $1.22M | 0.00% | −8,008−19.2% | Reduced |
| New York State Common Retirement Fund | 33,648 | $1.22M | 0.00% | +2,675+8.6% | Added |
| Fred Alger Management, LLC | 33,724 | $1.23M | 0.01% | +33,724 | New |
| Profund Advisors LLC | 33,754 | $1.23M | 0.05% | +7,120+26.7% | Added |
| Gsa Capital Partners LLP | 34,850 | $1.27M | 0.11% | +34,850 | New |
| Exome Asset Management LLC | 36,384 | $1.32M | 1.31% | +36,384 | New |
| Engineers Gate Manager LP | 36,523 | $1.33M | 0.04% | +25,139+220.8% | Added |
| Alps Advisors Inc | 36,530 | $1.33M | 0.01% | −2,994−7.6% | Reduced |
| Millennium Management LLC | 37,656 | $1.37M | 0.00% | −227,869−85.8% | Reduced |
| Legal & General Group Plc | 38,397 | $1.40M | 0.00% | −105−0.3% | Reduced |
| Platinum Investment Management Ltd | 41,508 | $1.51M | 0.06% | 00.0% | Unchanged |
| California State Teachers Retirement System | 42,710 | $1.55M | 0.00% | −1,422−3.2% | Reduced |
| RBF Capital, LLC | 45,362 | $1.65M | 0.10% | −9,000−16.6% | Reduced |
| Caption Management, LLC | 45,892 | $1.67M | 0.18% | +45,892 | New |
| Wells Fargo & Company | 45,970 | $1.67M | 0.00% | −10,488−18.6% | Reduced |
| Voya Investment Management LLC | 46,262 | $1.68M | 0.00% | −46,584−50.2% | Reduced |
| Alliancebernstein L.P. | 46,746 | $1.70M | 0.00% | +1,000+2.2% | Added |
| Sectoral Asset Management Inc | 46,777 | $1.70M | 0.73% | −125,630−72.9% | Reduced |
| Algert Global LLC | 49,258 | $1.79M | 0.07% | +21,258+75.9% | Added |
| Edgestream Partners, L.P. | 50,522 | $1.84M | 0.13% | +50,522 | New |
| Pier Capital, LLC | 56,829 | $2.07M | 0.30% | −627−1.1% | Reduced |
| Seven Eight Capital, LP | 56,946 | $2.07M | 0.24% | +56,946 | New |
| Twinbeech Capital LP | 58,096 | $2.11M | 0.03% | +39,720+216.2% | Added |
| Credit Suisse AG | 59,304 | $2.16M | 0.00% | +7,553+14.6% | Added |
| Handelsbanken Fonder AB | 61,400 | $2.23M | 0.01% | +2,500+4.2% | Added |
| Rhumbline Advisers | 61,920 | $2.25M | 0.00% | −531−0.9% | Reduced |
| Putnam Investments LLC | 66,516 | $2.42M | 0.00% | +9,903+17.5% | Added |
| Trexquant Investment LP | 67,683 | $2.46M | 0.06% | +10,840+19.1% | Added |
| Squarepoint Ops LLC | 74,030 | $2.69M | 0.01% | +41,691+128.9% | Added |
| Swiss National Bank | 79,200 | $2.88M | 0.00% | −7,800−9.0% | Reduced |
| Ensign Peak Advisors, Inc | 80,834 | $2.94M | 0.01% | −45,388−36.0% | Reduced |
| DCF Advisers, LLC | 84,000 | $3.05M | 2.07% | +1,050+1.3% | Added |
| Manufacturers Life Insurance Company, The | 85,622 | $3.11M | 0.00% | +3,591+4.4% | Added |
| Citigroup Inc | 87,581 | $3.18M | 0.00% | +19,651+28.9% | Added |
| BNP Paribas Arbitrage, SA | 93,004 | $3.38M | 0.01% | −12,212−11.6% | Reduced |
| Norges Bank | 104,564 | $3.80M | 0.00% | 00.0% | Unchanged |
| AXA S.A. | 120,617 | $4.38M | 0.01% | +7,704+6.8% | Added |
| Pinnacle Associates Ltd | 125,747 | $4.57M | 0.08% | +741+0.6% | Added |
| UBS Group AG | 132,497 | $4.81M | 0.00% | +87,245+192.8% | Added |
| SG Americas Securities, LLC | 135,857 | $4.94M | 0.05% | +43,363+46.9% | Added |
| Citadel Advisors LLC | 138,587 | $5.04M | 0.01% | −10,348−6.9% | Reduced |
| Barclays PLC | 142,607 | $5.18M | 0.00% | +56,572+65.8% | Added |
| TD Asset Management Inc | 146,538 | $5.33M | 0.01% | −26,144−15.1% | Reduced |
| Two Sigma Advisers, LP | 146,800 | $5.33M | 0.01% | −57,000−28.0% | Reduced |
| Systematic Financial Management LP | 149,759 | $5.44M | 0.16% | +149,759 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 155,942 | $5.67M | 0.03% | +28,167+22.0% | Added |
| Birchview Capital, LP | 169,574 | $6.16M | 4.82% | 00.0% | Unchanged |
| Mariner, LLC | 178,424 | $6.48M | 0.02% | +10,492+6.2% | Added |
| Amundi | 166,631 | $6.60M | 0.00% | −9,941−5.6% | Reduced |
| Jane Street Group, LLC | 185,195 | $6.73M | 0.01% | +178,939+2,860.3% | Added |
| PFM Health Sciences, LP | 189,744 | $6.90M | 0.41% | −646,827−77.3% | Reduced |
| Qube Research & Technologies Ltd | 203,682 | $7.40M | 0.02% | +119,029+140.6% | Added |
| Rafferty Asset Management, LLC | 207,419 | $7.54M | 0.03% | +50,579+32.2% | Added |
| Prosight Management, LP | 229,539 | $8.34M | 3.35% | +103,337+81.9% | Added |
| Armistice Capital, LLC | 278,000 | $10.1M | 0.27% | +278,000 | New |
| Bank of America Corp | 287,355 | $10.4M | 0.00% | +177,932+162.6% | Added |
| UBS Asset Management Americas Inc | 291,867 | $10.6M | 0.00% | +25,820+9.7% | Added |
| Nuveen Asset Management, LLC | 300,819 | $10.9M | 0.00% | −136,451−31.2% | Reduced |
| Charles Schwab Investment Management Inc | 313,230 | $11.4M | 0.00% | +4,693+1.5% | Added |
| Goldman Sachs Group Inc | 333,786 | $12.1M | 0.00% | +83,463+33.3% | Added |
| Renaissance Technologies LLC | 335,800 | $12.2M | 0.02% | +75,200+28.9% | Added |
| Finepoint Capital LP | 349,300 | $12.7M | 4.39% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 358,478 | $13.0M | 0.00% | −43,553−10.8% | Reduced |
| Maple Rock Capital Partners Inc. | 373,584 | $13.6M | 1.06% | +139,000+59.3% | Added |
| Northern Trust Corp | 404,110 | $14.7M | 0.00% | −5,737−1.4% | Reduced |
| Granahan Investment Management Inc | 417,157 | $15.2M | 0.50% | +69,092+19.9% | Added |
| Bank of New York Mellon Corp | 442,309 | $16.1M | 0.00% | −57,073−11.4% | Reduced |
| Eventide Asset Management, LLC | 445,155 | $16.2M | 0.26% | 00.0% | Unchanged |
| Morgan Stanley | 482,260 | $17.5M | 0.00% | +213,400+79.4% | Added |
| Artal Group S.A. | 501,360 | $18.2M | 0.62% | +501,360 | New |
| Rock Springs Capital Management LP | 625,048 | $22.7M | 0.56% | +10,750+1.7% | Added |
| Boxer Capital, LLC | 665,000 | $24.2M | 1.20% | +40,000+6.4% | Added |
| Dimensional Fund Advisors LP | 867,635 | $31.5M | 0.01% | −235,227−21.3% | Reduced |
| Geode Capital Management, LLC | 905,125 | $32.9M | 0.00% | +46,065+5.4% | Added |
| Vanguard Group Inc | 1,070,555 | $38.9M | 0.00% | +39,781+3.9% | Added |
| First Light Asset Management, LLC | 1,088,801 | $39.6M | 3.18% | −405,238−27.1% | Reduced |
| Palo Alto Investors LP | 1,660,057 | $60.3M | 5.44% | +2,599+0.2% | Added |
| Janus Henderson Group PLC | 2,035,984 | $74.0M | 0.04% | +209,375+11.5% | Added |
| Wellington Management Group LLP | 2,594,102 | $94.3M | 0.02% | +452,455+21.1% | Added |
| State Street Corp | 2,758,564 | $100.2M | 0.00% | +648,331+30.7% | Added |
| BlackRock Inc. | 3,770,650 | $137.0M | 0.00% | +229,406+6.5% | Added |
| Price T Rowe Associates Inc | 4,237,351 | $154.0M | 0.02% | +417,338+10.9% | Added |
| FMR LLC | 8,049,796 | $292.5M | 0.02% | +19,506+0.2% | Added |
| EcoR1 Capital, LLC | 11,584,280 | $421.0M | 10.94% | 00.0% | Unchanged |
| T. Rowe Price Investment Management, Inc. | 0 | $0 | 0.00% | −853,479−100.0% | Sold out |
| Avidity Partners Management LP | 0 | $0 | 0.00% | −382,305−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −219,623−100.0% | Sold out |
| Perceptive Advisors LLC | 0 | $0 | 0.00% | −165,615−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −136,203−100.0% | Sold out |
| Frazier Life Sciences Management, L.P. | 0 | $0 | 0.00% | −127,900−100.0% | Sold out |
| Affinity Asset Advisors, LLC | 0 | $0 | 0.00% | −79,214−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −60,853−100.0% | Sold out |
| Jennison Associates LLC | 0 | $0 | 0.00% | −55,579−100.0% | Sold out |
| State of New Jersey Common Pension Fund D | 0 | $0 | 0.00% | −45,952−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −34,890−100.0% | Sold out |
| Hillsdale Investment Management Inc. | 0 | $0 | 0.00% | −31,300−100.0% | Sold out |
| First Trust Advisors LP | 0 | $0 | 0.00% | −30,709−100.0% | Sold out |