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, Q2 2023
Institutional positions in Prothena Corp Public Ltd Co as of Jun 30, 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
- 196
- +4 vs. Q1 2023
- Shares held
- 52.0M
- +214.3K (+0.4%) vs. Q1 2023
- Total value
- $3.54B
- +$1.03B (+41.0%) vs. Q1 2023
- New holders
- 30
- 72 more added
- Sold out
- 26
- 58 more reduced
Compare with Q1 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, Q2 2023
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q1 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Prudential Financial Inc | 22,911 | $1.56M | 0.00% | +4,950+27.6% | Added |
| Jump Financial, LLC | 23,631 | $1.61M | 0.06% | −9,340−28.3% | Reduced |
| Edgewood Management LLC | 24,060 | $1.64M | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 26,307 | $1.80M | 0.00% | +6,696+34.1% | Added |
| BNP Paribas Arbitrage, SA | 27,207 | $1.86M | 0.00% | −28,818−51.4% | Reduced |
| Thornburg Investment Management Inc | 29,011 | $1.98M | 0.03% | −632−2.1% | Reduced |
| Federated Hermes, Inc. | 30,856 | $2.11M | 0.01% | +29,850+2,967.2% | Added |
| New York State Common Retirement Fund | 31,175 | $2.13M | 0.00% | −400−1.3% | Reduced |
| Millennium Management LLC | 33,100 | $2.26M | 0.00% | −161,539−83.0% | Reduced |
| Macquarie Group Ltd | 34,369 | $2.35M | 0.00% | +5,800+20.3% | Added |
| State of New Jersey Common Pension Fund D | 36,065 | $2.46M | 0.01% | −8,494−19.1% | Reduced |
| Hillsdale Investment Management Inc. | 37,400 | $2.55M | 0.23% | −27,600−42.5% | Reduced |
| Moody Aldrich Partners LLC | 37,599 | $2.57M | 0.50% | −162−0.4% | Reduced |
| Legal & General Group Plc | 37,748 | $2.58M | 0.00% | +1,389+3.8% | Added |
| Alps Advisors Inc | 38,776 | $2.65M | 0.02% | +4,142+12.0% | Added |
| Qube Research & Technologies Ltd | 41,397 | $2.83M | 0.01% | +33,159+402.5% | Added |
| Platinum Investment Management Ltd | 41,508 | $2.83M | 0.10% | 00.0% | Unchanged |
| Woodline Partners LP | 41,633 | $2.84M | 0.03% | +41,633 | New |
| State of Wisconsin Investment Board | 42,040 | $2.87M | 0.01% | +10,851+34.8% | Added |
| Empowered Funds, LLC | 43,937 | $3.00M | 0.11% | +43,937 | New |
| EA Series Trust | 43,937 | $3.00M | 0.11% | +43,937 | New |
| Citigroup Inc | 47,552 | $3.25M | 0.00% | −67,248−58.6% | Reduced |
| California State Teachers Retirement System | 48,504 | $3.31M | 0.00% | +4,196+9.5% | Added |
| Alliancebernstein L.P. | 49,146 | $3.36M | 0.00% | +4,280+9.5% | Added |
| Jennison Associates LLC | 49,233 | $3.36M | 0.00% | 00.0% | Unchanged |
| EAM Investors, LLC | 49,656 | $3.39M | 0.63% | +13,500+37.3% | Added |
| Silverarc Capital Management, LLC | 49,721 | $3.39M | 1.15% | +49,721 | New |
| Integral Health Asset Management, LLC | 52,000 | $3.55M | 0.47% | +52,000 | New |
| Putnam Investments LLC | 52,728 | $3.60M | 0.01% | +1,823+3.6% | Added |
| Jane Street Group, LLC | 53,475 | $3.65M | 0.00% | +34,082+175.7% | Added |
| RBF Capital, LLC | 54,362 | $3.71M | 0.23% | 00.0% | Unchanged |
| Walleye Capital LLC | 55,652 | $3.80M | 0.07% | +55,652 | New |
| Wells Fargo & Company | 55,754 | $3.81M | 0.00% | +8,434+17.8% | Added |
| Credit Suisse AG | 57,397 | $3.92M | 0.00% | +15,682+37.6% | Added |
| Handelsbanken Fonder AB | 58,900 | $4.02M | 0.02% | +6,900+13.3% | Added |
| Rhumbline Advisers | 60,790 | $4.15M | 0.00% | +4,946+8.9% | Added |
| Invesco Ltd. | 63,945 | $4.37M | 0.00% | +35,593+125.5% | Added |
| Manufacturers Life Insurance Company, The | 65,410 | $4.47M | 0.00% | +8,444+14.8% | Added |
| Bank of Montreal | 66,767 | $4.61M | 0.00% | +66,767 | New |
| Barclays PLC | 67,812 | $4.63M | 0.00% | +3,208+5.0% | Added |
| EAM Global Investors LLC | 70,872 | $4.84M | 1.42% | +7,752+12.3% | Added |
| Principal Financial Group Inc | 74,323 | $5.07M | 0.00% | +19,454+35.5% | Added |
| DCF Advisers, LLC | 84,750 | $5.79M | 3.99% | +500+0.6% | Added |
| Swiss National Bank | 85,900 | $5.87M | 0.00% | +12,800+17.5% | Added |
| TD Asset Management Inc | 89,413 | $6.11M | 0.01% | +14,707+19.7% | Added |
| Atika Capital Management LLC | 97,500 | $6.66M | 0.84% | +48,922+100.7% | Added |
| Affinity Asset Advisors, LLC | 100,000 | $6.83M | 2.69% | +100,000 | New |
| Norges Bank | 104,564 | $7.14M | 0.00% | −114,250−52.2% | Reduced |
| Amundi | 108,851 | $7.48M | 0.00% | +106,070+3,814.1% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 110,136 | $7.52M | 0.04% | +20,712+23.2% | Added |
| AXA S.A. | 113,316 | $7.74M | 0.03% | +94,364+497.9% | Added |
| Rafferty Asset Management, LLC | 119,578 | $8.16M | 0.05% | −22,111−15.6% | Reduced |
| Prosight Management, LP | 120,000 | $8.19M | 2.40% | −327,092−73.2% | Reduced |
| Ensign Peak Advisors, Inc | 126,222 | $8.62M | 0.02% | +600+0.5% | Added |
| Frazier Life Sciences Management, L.P. | 127,900 | $8.73M | 0.52% | 00.0% | Unchanged |
| Pinnacle Associates Ltd | 130,459 | $8.91M | 0.15% | −4,822−3.6% | Reduced |
| Mariner, LLC | 135,062 | $9.22M | 0.02% | +27,955+26.1% | Added |
| Voya Investment Management LLC | 143,769 | $9.82M | 0.01% | +105,222+273.0% | Added |
| Sectoral Asset Management Inc | 151,848 | $10.4M | 1.73% | +29,098+23.7% | Added |
| Morgan Stanley | 152,595 | $10.4M | 0.00% | −132,312−46.4% | Reduced |
| Birchview Capital, LP | 156,111 | $10.7M | 7.99% | +27,716+21.6% | Added |
| Bank of America Corp | 158,862 | $10.8M | 0.00% | −405,579−71.9% | Reduced |
| UBS Asset Management Americas Inc | 226,202 | $11.0M | 0.01% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 162,733 | $11.1M | 0.03% | −202,806−55.5% | Reduced |
| Man Group plc | 170,562 | $11.6M | 0.04% | – | – |
| Perceptive Advisors LLC | 184,615 | $12.6M | 0.37% | −53,031−22.3% | Reduced |
| Goldman Sachs Group Inc | 192,635 | $13.2M | 0.00% | −32,442−14.4% | Reduced |
| Point72 Asset Management, L.P. | 218,802 | $14.9M | 0.05% | −116,191−34.7% | Reduced |
| Maple Rock Capital Partners Inc. | 234,584 | $16.0M | 2.04% | −59,000−20.1% | Reduced |
| Two Sigma Advisers, LP | 266,300 | $18.2M | 0.05% | −115,000−30.2% | Reduced |
| Granahan Investment Management Inc | 295,057 | $20.1M | 0.62% | +62,429+26.8% | Added |
| Boxer Capital, LLC | 300,000 | $20.5M | 0.95% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 312,483 | $21.3M | 0.01% | +13,512+4.5% | Added |
| Finepoint Capital LP | 317,300 | $21.7M | 7.50% | −14,300−4.3% | Reduced |
| Renaissance Technologies LLC | 323,800 | $22.1M | 0.03% | −83,500−20.5% | Reduced |
| Northern Trust Corp | 411,975 | $28.1M | 0.01% | +29,287+7.7% | Added |
| JPMorgan Chase & Co | 414,065 | $28.3M | 0.00% | +86,347+26.3% | Added |
| Nuveen Asset Management, LLC | 443,016 | $30.2M | 0.01% | −63,712−12.6% | Reduced |
| Eventide Asset Management, LLC | 445,155 | $30.4M | 0.51% | +6,423+1.5% | Added |
| Bank of New York Mellon Corp | 514,233 | $35.1M | 0.01% | +350,141+213.4% | Added |
| Avidity Partners Management LP | 535,000 | $36.5M | 1.28% | −533,200−49.9% | Reduced |
| Rock Springs Capital Management LP | 753,462 | $51.4M | 1.22% | 00.0% | Unchanged |
| PFM Health Sciences, LP | 774,546 | $52.9M | 2.13% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 838,421 | $57.2M | 0.01% | +58,597+7.5% | Added |
| T. Rowe Price Investment Management, Inc. | 876,170 | $59.8M | 0.04% | −38,513−4.2% | Reduced |
| Vanguard Group Inc | 1,040,681 | $71.1M | 0.00% | +96,125+10.2% | Added |
| Dimensional Fund Advisors LP | 1,150,208 | $78.5M | 0.03% | −82,427−6.7% | Reduced |
| First Light Asset Management, LLC | 1,500,129 | $102.4M | 8.03% | −11,039−0.7% | Reduced |
| Palo Alto Investors LP | 1,657,458 | $113.2M | 9.14% | −6,319−0.4% | Reduced |
| Janus Henderson Group PLC | 1,672,531 | $114.2M | 0.07% | +76,228+4.8% | Added |
| State Street Corp | 1,873,678 | $127.9M | 0.01% | −228,780−10.9% | Reduced |
| Wellington Management Group LLP | 2,211,222 | $151.0M | 0.03% | −54,856−2.4% | Reduced |
| Price T Rowe Associates Inc | 3,553,768 | $242.7M | 0.03% | +351,475+11.0% | Added |
| BlackRock Inc. | 3,611,254 | $246.6M | 0.01% | −13,373−0.4% | Reduced |
| FMR LLC | 7,912,766 | $540.3M | 0.05% | +1,150,741+17.0% | Added |
| EcoR1 Capital, LLC | 11,584,280 | $791.0M | 20.86% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −78,309−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −42,200−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −29,008−100.0% | Sold out |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −26,800−100.0% | Sold out |