PROTHENA CORP PUBLIC LTD CO PRTA
CIK 0001559053 · CUSIP G72800108
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | EcoR1 Capital, LLC CIK 1587114 · View history | $160.44M 11,584,280 shares | 6.41% | 0(0.00%)Unchanged | SEC filing ↗ Feb 14, 2025 | ▾ |
| 02 | FMR LLC CIK 315066 · View history | $111.79M 8,071,309 shares | 0.01% | +4.33K(+0.10%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 03 | WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · Amended · View history | $71.06M 5,130,876 shares | 0.01% | +952.09K(+22.80%)Added | SEC filing ↗ Feb 12, 2025 | ▾ |
| 04 | BlackRock, Inc. CIK 2012383 · View history | $57.09M 4,122,376 shares | 0.00% | +93.99K(+2.30%)Added | SEC filing ↗ Feb 7, 2025 | ▾ |
| 05 | PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history | $51.05M 3,685,708 shares | 0.01% | -136.73K(-3.60%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
| 06 | ARMISTICE CAPITAL, LLC CIK 1601086 · View history | $30.97M 2,236,000 shares | 0.72% | +586.00K(+35.50%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 07 | STATE STREET CORP CIK 93751 · View history | $25.78M 1,861,641 shares | 0.00% | +186.73K(+11.10%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 08 | Palo Alto Investors LP CIK 1306923 · View history | $24.07M 1,737,964 shares | 3.73% | 0(0.00%)Unchanged | SEC filing ↗ Feb 14, 2025 | ▾ |
| 09 | VANGUARD GROUP INC CIK 102909 · View history | $19.44M 1,403,838 shares | 0.00% | +144.74K(+11.50%)Added | SEC filing ↗ Feb 11, 2025 | ▾ |
| 10 | Siren, L.L.C. CIK 2005245 · View history | $15.23M 1,099,840 shares | 0.67% | 0(0.00%)Unchanged | SEC filing ↗ Feb 14, 2025 | ▾ |
| 11 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $13.36M 964,308 shares | 0.00% | +829(+0.10%)Added | SEC filing ↗ Feb 12, 2025 | ▾ |
| 12 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $11.98M 864,833 shares | 0.00% | +10.78K(+1.30%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 13 | FEDERATED HERMES, INC. CIK 1056288 · View history | $10.33M 746,177 shares | 0.02% | +341.27K(+84.30%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 14 | MORGAN STANLEY CIK 895421 · Amended · View history | $9.96M 719,490 shares | 0.00% | +203(0.00%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 15 | Boxer Capital Management, LLC CIK 2018299 · View history | $9.56M 690,000 shares | 0.81% | — | SEC filing ↗ Feb 14, 2025 | ▾ |
| 16 | Finepoint Capital LP CIK 1608126 · View history | $9.10M 657,071 shares | 1.05% | +223.60K(+51.60%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 17 | Rock Springs Capital Management LP CIK 1595725 · View history | $8.93M 644,601 shares | 0.34% | +19.55K(+3.10%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 18 | GOLDMAN SACHS GROUP INC CIK 886982 · View history | $7.71M 556,526 shares | 0.00% | +141.24K(+34.00%)Added | SEC filing ↗ Feb 11, 2025 | ▾ |
| 19 | Prosight Management, LP CIK 1617201 · View history | $5.79M 418,122 shares | 1.62% | -65.34K(-13.50%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
| 20 | NORTHERN TRUST CORP CIK 73124 · View history | $5.60M 404,496 shares | 0.00% | +31.84K(+8.50%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
Showing 20 / 172 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 172 reporting institutions.
This page includes 20 of 172 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
+ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 172 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"G72800108","quarter":"2024Q4","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.