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, Q1 2024
Institutional positions in Prothena Corp Public Ltd Co as of Mar 31, 2024. 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
- 169
- −16 vs. Q4 2023
- Shares held
- 53.5M
- −26.4K (0.0%) vs. Q4 2023
- Total value
- $1.33B
- −$619.7M (−31.9%) vs. Q4 2023
- New holders
- 25
- 58 more added
- Sold out
- 41
- 61 more reduced
2 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2024
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Primecap Management Co | 36,500 | $904.1K | 0.00% | +36,500 | New |
| Alps Advisors Inc | 37,889 | $938.5K | 0.01% | +1,359+3.7% | Added |
| Legal & General Group Plc | 38,875 | $962.9K | 0.00% | +478+1.2% | Added |
| California State Teachers Retirement System | 40,442 | $1.00M | 0.00% | −2,268−5.3% | Reduced |
| Invesco Ltd. | 40,504 | $1.00M | 0.00% | +13,889+52.2% | Added |
| Seven Eight Capital, LP | 41,120 | $1.02M | 0.11% | −15,826−27.8% | Reduced |
| Platinum Investment Management Ltd | 41,508 | $1.03M | 0.04% | 00.0% | Unchanged |
| Voya Investment Management LLC | 43,674 | $1.08M | 0.00% | −2,588−5.6% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 27,912 | $1.09M | 0.00% | +161+0.6% | Added |
| Guggenheim Capital LLC | 44,400 | $1.10M | 0.01% | +20,939+89.3% | Added |
| RBF Capital, LLC | 45,362 | $1.12M | 0.06% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 46,746 | $1.16M | 0.00% | 00.0% | Unchanged |
| Profund Advisors LLC | 46,878 | $1.16M | 0.05% | +13,124+38.9% | Added |
| Algert Global LLC | 48,350 | $1.20M | 0.05% | −908−1.8% | Reduced |
| Thrivent Financial for Lutherans | 49,543 | $1.23M | 0.00% | +49,543 | New |
| Wells Fargo & Company | 51,049 | $1.26M | 0.00% | +5,079+11.0% | Added |
| Jane Street Group, LLC | 54,396 | $1.35M | 0.00% | −130,799−70.6% | Reduced |
| Pier Capital, LLC | 57,020 | $1.41M | 0.19% | +191+0.3% | Added |
| Norges Bank | 57,454 | $1.42M | 0.00% | −47,110−45.1% | Reduced |
| Barclays PLC | 58,332 | $1.44M | 0.00% | −84,275−59.1% | Reduced |
| Susquehanna International Group, LLP | 59,980 | $1.49M | 0.00% | +26,383+78.5% | Added |
| Credit Suisse AG | 60,202 | $1.49M | 0.00% | +898+1.5% | Added |
| Rhumbline Advisers | 63,500 | $1.57M | 0.00% | +1,580+2.6% | Added |
| Swiss National Bank | 79,200 | $1.96M | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 82,581 | $2.05M | 0.00% | −3,041−3.6% | Reduced |
| DCF Advisers, LLC | 107,000 | $2.65M | 1.60% | +23,000+27.4% | Added |
| TD Asset Management Inc | 116,338 | $2.88M | 0.00% | −30,200−20.6% | Reduced |
| AXA S.A. | 120,650 | $2.99M | 0.01% | +330.0% | Added |
| Pinnacle Associates Ltd | 125,264 | $3.10M | 0.05% | −483−0.4% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 131,905 | $3.27M | 0.01% | −24,037−15.4% | Reduced |
| Cubist Systematic Strategies, LLC | 135,321 | $3.35M | 0.04% | +125,442+1,269.8% | Added |
| Bank of New York Mellon Corp | 145,845 | $3.61M | 0.00% | −296,464−67.0% | Reduced |
| Systematic Financial Management LP | 153,992 | $3.81M | 0.11% | +4,233+2.8% | Added |
| Birchview Capital, LP | 169,574 | $4.20M | 3.42% | 00.0% | Unchanged |
| Prosight Management, LP | 170,469 | $4.22M | 1.17% | −59,070−25.7% | Reduced |
| Mariner, LLC | 176,966 | $4.38M | 0.01% | −1,458−0.8% | Reduced |
| Qube Research & Technologies Ltd | 195,446 | $4.84M | 0.01% | −8,236−4.0% | Reduced |
| UBS Group AG | 198,680 | $4.92M | 0.00% | +66,183+50.0% | Added |
| Citadel Advisors LLC | 234,926 | $5.82M | 0.01% | +96,339+69.5% | Added |
| Bank of America Corp | 240,343 | $5.95M | 0.00% | −47,012−16.4% | Reduced |
| Nuveen Asset Management, LLC | 243,022 | $6.02M | 0.00% | −57,797−19.2% | Reduced |
| Citigroup Inc | 259,872 | $6.44M | 0.01% | +172,291+196.7% | Added |
| JPMorgan Chase & Co | 298,091 | $7.38M | 0.00% | −60,387−16.8% | Reduced |
| Rafferty Asset Management, LLC | 303,455 | $7.52M | 0.03% | +96,036+46.3% | Added |
| Goldman Sachs Group Inc | 308,887 | $7.65M | 0.00% | −24,899−7.5% | Reduced |
| Charles Schwab Investment Management Inc | 318,905 | $7.90M | 0.00% | +5,675+1.8% | Added |
| Millennium Management LLC | 322,241 | $7.98M | 0.01% | +284,585+755.7% | Added |
| Granahan Investment Management Inc | 333,920 | $8.27M | 0.29% | −83,237−20.0% | Reduced |
| UBS Asset Management Americas Inc | 375,165 | $9.29M | 0.00% | +83,298+28.5% | Added |
| Renaissance Technologies LLC | 389,700 | $9.65M | 0.02% | +53,900+16.1% | Added |
| Northern Trust Corp | 397,263 | $9.84M | 0.00% | −6,847−1.7% | Reduced |
| Finepoint Capital LP | 402,400 | $9.97M | 2.56% | +53,100+15.2% | Added |
| First Light Asset Management, LLC | 444,953 | $11.0M | 0.84% | −643,848−59.1% | Reduced |
| Rock Springs Capital Management LP | 625,048 | $15.5M | 0.39% | 00.0% | Unchanged |
| Morgan Stanley | 652,468 | $16.2M | 0.00% | +170,208+35.3% | Added |
| Boxer Capital, LLC | 690,000 | $17.1M | 0.84% | +25,000+3.8% | Added |
| Dimensional Fund Advisors LP | 862,832 | $21.4M | 0.01% | −4,803−0.6% | Reduced |
| Geode Capital Management, LLC | 924,580 | $22.9M | 0.00% | +19,455+2.1% | Added |
| Artal Group S.A. | 1,001,360 | $24.8M | 0.64% | +500,000+99.7% | Added |
| Armistice Capital, LLC | 1,096,000 | $27.1M | 0.72% | +818,000+294.2% | Added |
| Vanguard Group Inc | 1,125,283 | $27.9M | 0.00% | +54,728+5.1% | Added |
| Janus Henderson Group PLC | 1,309,590 | $32.4M | 0.02% | −726,394−35.7% | Reduced |
| Palo Alto Investors LP | 1,663,448 | $41.2M | 4.65% | +3,391+0.2% | Added |
| State Street Corp | 3,473,996 | $86.1M | 0.00% | +715,432+25.9% | Added |
| BlackRock Inc. | 3,718,813 | $92.1M | 0.00% | −51,837−1.4% | Reduced |
| Wellington Management Group LLP | 3,752,147 | $92.9M | 0.02% | +1,158,045+44.6% | Added |
| Price T Rowe Associates Inc | 4,201,771 | $104.1M | 0.01% | −35,580−0.8% | Reduced |
| FMR LLC | 8,006,411 | $198.3M | 0.01% | −43,385−0.5% | Reduced |
| EcoR1 Capital, LLC | 11,584,280 | $286.9M | 7.29% | 00.0% | Unchanged |
| Eventide Asset Management, LLC | 0 | $0 | 0.00% | −445,155−100.0% | Sold out |
| Maple Rock Capital Partners Inc. | 0 | $0 | 0.00% | −373,584−100.0% | Sold out |
| PFM Health Sciences, LP | 0 | $0 | 0.00% | −189,744−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −166,631−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −74,030−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −67,683−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −58,096−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −50,522−100.0% | Sold out |
| Sectoral Asset Management Inc | 0 | $0 | 0.00% | −46,777−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −45,892−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −36,523−100.0% | Sold out |
| Exome Asset Management LLC | 0 | $0 | 0.00% | −36,384−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −34,850−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −28,561−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −26,476−100.0% | Sold out |
| Thornburg Investment Management Inc | 0 | $0 | 0.00% | −25,591−100.0% | Sold out |
| Capula Management Ltd | 0 | $0 | 0.00% | −24,310−100.0% | Sold out |
| HAP Trading, LLC | 0 | $0 | 0.00% | −22,701−100.0% | Sold out |
| Susquehanna Portfolio Strategies, LLC | 0 | $0 | 0.00% | −20,158−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −20,000−100.0% | Sold out |
| AQR Capital Management LLC | 0 | $0 | 0.00% | −13,781−100.0% | Sold out |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −13,760−100.0% | Sold out |
| Rockefeller Capital Management L.P. | 0 | $0 | 0.00% | −12,614−100.0% | Sold out |
| Entropy Technologies, LP | 0 | $0 | 0.00% | −9,031−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −8,600−100.0% | Sold out |
| HealthInvest Partners AB | 0 | $0 | 0.00% | −8,342−100.0% | Sold out |
| Raymond James & Associates | 0 | $0 | 0.00% | −8,167−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −7,264−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −6,403−100.0% | Sold out |
| Oppenheimer & Co Inc | 0 | $0 | 0.00% | −6,326−100.0% | Sold out |
| Snowden Capital Advisors LLC | 0 | $0 | 0.00% | −6,000−100.0% | Sold out |