Rapport Therapeutics, Inc. RAPP
CIK 0002012593 · CUSIP 75383L102
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 | TRV GP V, LLC CIK 1990717 · View history | $211.92M 7,135,233 shares | 59.95% | 0(0.0%)Unchanged | SEC filing ↗ Nov 13, 2025 | ▾ |
| 02 | FMR LLC CIK 315066 · View history | $205.43M 6,916,995 shares | 0.01% | +1.44M(+26.3%)Added | SEC filing ↗ Nov 13, 2025 | ▾ |
| 03 | ARCH Venture Management, LLC CIK 1274403 · View history | $110.74M 3,728,738 shares | 22.49% | 0(0.0%)Unchanged | SEC filing ↗ Nov 14, 2025 | ▾ |
| 04 | Capital International Investors CIK 1562230 · View history | $101.06M 3,402,529 shares | 0.02% | +800.00K(+30.7%)Added | SEC filing ↗ Nov 13, 2025 | ▾ |
| 05 | Cormorant Asset Management, LP CIK 1583977 · View history | $94.82M 3,192,521 shares | 6.54% | +251.60K(+8.6%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 06 | GOLDMAN SACHS GROUP INC CIK 886982 · View history | $71.93M 2,421,976 shares | 0.01% | +1.19M(+96.1%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 07 | Sofinnova Investments, Inc. CIK 1631134 · View history | $57.84M 1,947,579 shares | 3.55% | -48.02K(-2.4%)Reduced | SEC filing ↗ Nov 14, 2025 | ▾ |
| 08 | JOHNSON & JOHNSON CIK 200406 · Amended · View history | $53.00M 1,784,517 shares | 10.52% | -713.53K(-28.6%)Reduced | SEC filing ↗ Mar 18, 2026 | ▾ |
| 09 | VANGUARD GROUP INC CIK 102909 · View history | $48.31M 1,626,538 shares | 0.00% | +519.05K(+46.9%)Added | SEC filing ↗ Nov 7, 2025 | ▾ |
| 10 | BlackRock, Inc. CIK 2012383 · View history | $46.57M 1,568,081 shares | 0.00% | +348.88K(+28.6%)Added | SEC filing ↗ Nov 12, 2025 | ▾ |
| 11 | BAKER BROS. ADVISORS LP CIK 1263508 · View history | $45.95M 1,547,090 shares | 0.33% | +997.00K(+181.2%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 12 | PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history | $32.74M 1,102,391 shares | 0.00% | -423.13K(-27.7%)Reduced | SEC filing ↗ Nov 14, 2025 | ▾ |
| 13 | Siren, L.L.C. CIK 2005245 · View history | $31.29M 1,053,469 shares | 1.22% | +675.00K(+178.4%)Added | SEC filing ↗ Nov 13, 2025 | ▾ |
| 14 | TRV GP VI, LLC CIK 1990716 · View history | $28.79M 969,218 shares | 26.26% | 0(0.0%)Unchanged | SEC filing ↗ Nov 13, 2025 | ▾ |
| 15 | Vestal Point Capital, LP CIK 1974915 · View history | $28.21M 950,000 shares | 1.28% | +950.00KNew | SEC filing ↗ Nov 14, 2025 | ▾ |
| 16 | Polar Capital Holdings Plc CIK 1837309 · View history | $27.89M 938,952 shares | 0.13% | +938.95KNew | SEC filing ↗ Nov 14, 2025 | ▾ |
| 17 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC CIK 861177 · View history | $26.50M 892,258 shares | 0.01% | +648.38K(+265.9%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 18 | ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history | $25.41M 855,620 shares | 0.01% | -299.07K(-25.9%)Reduced | SEC filing ↗ Nov 14, 2025 | ▾ |
| 19 | T. Rowe Price Investment Management, Inc. CIK 1897612 · View history | $21.01M 707,508 shares | 0.01% | +93.69K(+15.3%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 20 | UBS Group AG CIK 1610520 · View history | $16.57M 558,073 shares | 0.00% | +284.57K(+104.0%)Added | SEC filing ↗ Nov 13, 2025 | ▾ |
Showing 20 / 124 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 124 reporting institutions.
This page includes 20 of 124 reporting institutions. Sign 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 124 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.
MCP https://api.akkrudata.ai/mcp
get_institutional_security_holders
{"cusip":"75383L102","quarter":"2025Q3","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 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.