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 |
|---|---|---|---|---|---|
| Covestor Ltd | 4 | $0 | 0.00% | +1+33.3% | Added |
| Harbour Investments, Inc. | 1 | $25 | 0.00% | 00.0% | Unchanged |
| JFS Wealth Advisors, LLC | 2 | $50 | 0.00% | −2−50.0% | Reduced |
| Whittier Trust Co of Nevada Inc | 3 | $74 | 0.00% | 00.0% | Unchanged |
| First Manhattan Co | 3 | $74 | 0.00% | +3 | New |
| Register Financial Advisors LLC | 4 | $99 | 0.00% | +4 | New |
| Rothschild Investment LLC | 5 | $124 | 0.00% | +5 | New |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 9 | $222 | 0.00% | +9 | New |
| Lowe Wealth Advisors, LLC | 10 | $248 | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 12 | $297 | 0.00% | +12 | New |
| Private Wealth Management Group, LLC | 16 | $397 | 0.00% | −9−36.0% | Reduced |
| GWM Advisors LLC | 17 | $420 | 0.00% | −55−76.4% | Reduced |
| CoreCap Advisors, LLC | 23 | $570 | 0.00% | +23 | New |
| POM Investment Strategies, LLC | 24 | $594 | 0.00% | 00.0% | Unchanged |
| Caldwell Trust Co | 51 | $1.26K | 0.00% | +51 | New |
| CIBC Private Wealth Group, LLC | 49 | $1.28K | 0.00% | +49 | New |
| GAMMA Investing LLC | 58 | $1.44K | 0.00% | +18+45.0% | Added |
| EverSource Wealth Advisors, LLC | 94 | $1.91K | 0.00% | +1+1.1% | Added |
| Allworth Financial LP | 87 | $2.15K | 0.00% | −40−31.5% | Reduced |
| Harbor Investment Advisory, LLC | 100 | $2.48K | 0.00% | 00.0% | Unchanged |
| Gould Capital, LLC | 100 | $2.48K | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 108 | $2.67K | 0.00% | 00.0% | Unchanged |
| Albion Financial Group | 125 | $3.10K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 130 | $3.22K | 0.00% | −252−66.0% | Reduced |
| Lindbrook Capital, LLC | 141 | $3.49K | 0.00% | +97+220.5% | Added |
| Sittner & Nelson, LLC | 155 | $3.84K | 0.00% | 00.0% | Unchanged |
| Kelly Financial Services LLC | 182 | $4.51K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 198 | $4.90K | 0.00% | +119+150.6% | Added |
| MeadowBrook Investment Advisors LLC | 200 | $4.95K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 184 | $5.00K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 195 | $5.00K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 368 | $9.62K | 0.00% | −16−4.2% | Reduced |
| Signaturefd, LLC | 474 | $11.7K | 0.00% | +97+25.7% | Added |
| Clear Street Markets LLC | 500 | $12.0K | 0.01% | −500−50.0% | Reduced |
| Tower Research Capital LLC (TRC) | 584 | $14.5K | 0.00% | −4,435−88.4% | Reduced |
| Riverview Trust Co | 659 | $16.3K | 0.01% | +659 | New |
| Byrne Asset Management LLC | 680 | $16.8K | 0.01% | +380+126.7% | Added |
| Nisa Investment Advisors, LLC | 950 | $23.5K | 0.00% | +50+5.6% | Added |
| Quadrant Capital Group LLC | 960 | $23.8K | 0.00% | +941+4,952.6% | Added |
| CWM, LLC | 1,095 | $27.0K | 0.00% | +784+252.1% | Added |
| US Bancorp | 1,132 | $28.0K | 0.00% | −29−2.5% | Reduced |
| Aquatic Capital Management LLC | 1,200 | $29.7K | 0.00% | −5,700−82.6% | Reduced |
| Walleye Capital LLC | 1,219 | $30.2K | 0.00% | +1,219 | New |
| Quantbot Technologies LP | 1,300 | $32.2K | 0.00% | +1,300 | New |
| Pacer Advisors, Inc. | 1,410 | $34.9K | 0.00% | +1,410 | New |
| Amalgamated Bank | 1,440 | $36.0K | 0.00% | −4,610−76.2% | Reduced |
| The PNC Financial Services Group, Inc. | 1,527 | $37.8K | 0.00% | −17−1.1% | Reduced |
| KBC Group NV | 1,581 | $39.0K | 0.00% | +651+70.0% | Added |
| Advisor Group Holdings, Inc. | 2,076 | $51.4K | 0.00% | −2,019−49.3% | Reduced |
| Allspring Global Investments Holdings, LLC | 2,124 | $52.6K | 0.00% | +177+9.1% | Added |
| Virtus ETF Advisers LLC | 2,223 | $55.1K | 0.03% | −150−6.3% | Reduced |
| Group One Trading, L.P. | 2,296 | $56.9K | 0.00% | −25,160−91.6% | Reduced |
| Metropolitan Life Insurance Co | 2,317 | $57.4K | 0.00% | −72−3.0% | Reduced |
| Cutler Group LP | 3,700 | $91.0K | 0.05% | +3,700 | New |
| Headlands Technologies LLC | 3,881 | $96.1K | 0.02% | +3,881 | New |
| Ameritas Investment Partners, Inc. | 4,368 | $108.2K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 5,514 | $135.0K | 0.00% | −4,369−44.2% | Reduced |
| ADAR1 Capital Management, LLC | 5,988 | $148.3K | 0.04% | −114−1.9% | Reduced |
| Public Employees Retirement Association of Colorado | 6,552 | $162.0K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 7,218 | $178.0K | 0.01% | +7,218 | New |
| Creative Planning | 8,260 | $204.6K | 0.00% | +8,260 | New |
| Two Sigma Advisers, LP | 8,300 | $205.6K | 0.00% | −138,500−94.3% | Reduced |
| Point72 (DIFC) Ltd | 8,918 | $220.9K | 0.02% | +8,918 | New |
| Teacher Retirement System of Texas | 8,956 | $222.0K | 0.00% | −310−3.3% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 9,050 | $224.2K | 0.00% | −513−5.4% | Reduced |
| Atom Investors LP | 9,303 | $230.4K | 0.03% | +9,303 | New |
| Handelsbanken Fonder AB | 9,400 | $233.0K | 0.00% | −52,000−84.7% | Reduced |
| Aigen Investment Management, LP | 9,901 | $245.2K | 0.05% | +9,901 | New |
| STRS Ohio | 10,100 | $250.0K | 0.00% | −600−5.6% | Reduced |
| Focused Wealth Management, Inc | 10,129 | $250.9K | 0.04% | +10,000+7,751.9% | Added |
| Brinker Capital Investments, LLC | 10,158 | $251.6K | 0.00% | +798+8.5% | Added |
| Orion Portfolio Solutions, LLC | 10,158 | $251.6K | 0.00% | +798+8.5% | Added |
| China Universal Asset Management Co., Ltd. | 10,360 | $256.6K | 0.03% | +4,157+67.0% | Added |
| GTS Securities LLC | 10,944 | $271.1K | 0.01% | +10,944 | New |
| Arizona State Retirement System | 11,061 | $274.0K | 0.00% | −164−1.5% | Reduced |
| ProShare Advisors LLC | 11,346 | $281.0K | 0.00% | +932+8.9% | Added |
| Principal Financial Group Inc | 11,737 | $290.7K | 0.00% | −19,236−62.1% | Reduced |
| Axq Capital, LP | 13,416 | $332.3K | 0.08% | +6,396+91.1% | Added |
| Susquehanna Fundamental Investments, LLC | 13,818 | $342.3K | 0.02% | +13,818 | New |
| Teachers Retirement System of the State of Kentucky | 14,039 | $348.0K | 0.00% | +2,895+26.0% | Added |
| DekaBank Deutsche Girozentrale | 14,000 | $351.0K | 0.00% | 00.0% | Unchanged |
| E Fund Management Co., Ltd. | 14,340 | $355.2K | 0.02% | +3,244+29.2% | Added |
| New York Life Investment Management LLC | 14,407 | $356.9K | 0.00% | +14,407 | New |
| Schroder Investment Management Group | 15,771 | $390.6K | 0.00% | +318+2.1% | Added |
| HighMark Wealth Management LLC | 16,502 | $408.8K | 0.25% | +9,150+124.5% | Added |
| Ensign Peak Advisors, Inc | 16,593 | $411.0K | 0.00% | −64,241−79.5% | Reduced |
| SG Americas Securities, LLC | 16,720 | $414.0K | 0.00% | −119,137−87.7% | Reduced |
| HighTower Advisors, LLC | 18,615 | $459.0K | 0.00% | −120−0.6% | Reduced |
| American International Group, Inc. | 20,795 | $515.1K | 0.00% | −178−0.8% | Reduced |
| MetLife Investment Management | 21,852 | $541.3K | 0.00% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 11,286 | $547.0K | 0.00% | −630−5.3% | Reduced |
| Edgewood Management LLC | 24,060 | $596.0K | 0.00% | 00.0% | Unchanged |
| Bank of Montreal | 24,880 | $622.2K | 0.00% | +24,880 | New |
| Jump Financial, LLC | 27,951 | $692.3K | 0.02% | +21,494+332.9% | Added |
| Man Group plc | 29,679 | $735.1K | 0.00% | −2,725−8.4% | Reduced |
| Deutsche Bank AG | 31,897 | $790.1K | 0.00% | +9,696+43.7% | Added |
| BNP Paribas Arbitrage, SA | 32,253 | $798.9K | 0.00% | −60,751−65.3% | Reduced |
| New York State Common Retirement Fund | 32,350 | $801.3K | 0.00% | −1,298−3.9% | Reduced |
| Fred Alger Management, LLC | 32,996 | $817.3K | 0.00% | −728−2.2% | Reduced |
| State of Wisconsin Investment Board | 33,159 | $821.3K | 0.00% | +402+1.2% | Added |