Who owns RAPP?
Institutional ownership of Rapport Therapeutics Inc. from Form 13F, Q2 2026
161 institutional managers reported holding Rapport Therapeutics Inc. (RAPP) in Form 13F filings for Q2 2026, with 51,273,834 shares worth $2.1B. The largest reported holder was FMR LLC. Managers that filed both quarters cut a net 1,222,219 shares (-2.3%). 26 opened new positions and 12 sold out.
- Funds holding
- 161
- Value held
- $2.1B
- New / sold out
- 26 / 12
- Net shares, same filers
- -2.3%
Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
Largest holders of RAPP
| Fund | Value | Share of 13F holdings | Shares | Move |
|---|---|---|---|---|
| FMR LLC | $299M | 14.0% | 7,172,894 | Unchanged |
| TRV GP V, LLC | $262M | 12.2% | 6,280,525 | Trimmed |
| ARCH Venture Management, LLC | $155M | 7.3% | 3,728,738 | Unchanged |
| Capital International Investors | $122M | 5.7% | 2,921,958 | Trimmed |
| Goldman Sachs Group Inc | $121M | 5.7% | 2,910,449 | Trimmed |
| BlackRock, Inc. | $113M | 5.3% | 2,699,786 | Added |
| Cormorant Asset Management, LP | $111M | 5.2% | 2,657,521 | Trimmed |
| Sofinnova Investments, Inc. | $79.4M | 3.7% | 1,904,408 | Unchanged |
| Johnson & Johnson | $74.4M | 3.5% | 1,784,517 | Unchanged |
| Polar Capital Holdings Plc | $67.0M | 3.1% | 1,608,514 | Trimmed |
| Baker Bros. Advisors LP | $64.5M | 3.0% | 1,547,090 | Unchanged |
| Vanguard Capital Management LLC | $56.1M | 2.6% | 1,346,512 | Added |
| TRV GP VI, LLC | $40.4M | 1.9% | 969,218 | Unchanged |
| State Street Corp | $34.1M | 1.6% | 818,712 | Added |
| Geode Capital Management, LLC | $33.1M | 1.5% | 793,453 | Added |
| Price T Rowe Associates Inc | $32.8M | 1.5% | 787,446 | Trimmed |
| Perceptive Advisors LLC | $32.2M | 1.5% | 773,342 | Added |
| Vestal Point Capital, LP | $30.4M | 1.4% | 730,000 | Trimmed |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $26.8M | 1.3% | 644,082 | Trimmed |
| Siren, L.L.C. | $26.7M | 1.3% | 641,469 | Unchanged |
| Capital World Investors | $23.0M | 1.1% | 551,657 | Added |
| Alliancebernstein L.p. | $21.7M | 1.4% | 693,384 | Trimmed |
| T. Rowe Price Investment Management, Inc. | $16.4M | 0.8% | 393,200 | Trimmed |
| Dimensional Fund Advisors LP | $15.1M | 0.7% | 362,114 | Added |
| Vanguard Portfolio Management LLC | $15.0M | 0.7% | 359,944 | Added |
Share of 13F holdings is each fund's shares as a share of the 51,273,834 RAPP shares all 13F filers reported, not of shares outstanding.
Biggest buyers in Q2 2026
- Algert Global LLC New+$9.3M
- BlackRock, Inc. Added+$8.1M
- Candriam S.C.A. Added+$6.7M
- Dimensional Fund Advisors LP Added+$5.7M
- Morgan Stanley Added+$5.5M
- Perceptive Advisors LLC Added+$4.1M
- Woodline Partners LP New+$4.1M
- Walleye Capital LLC Added+$3.8M
- Citadel Advisors LLC New+$3.4M
- Orbimed Advisors LLC New+$3.2M
Biggest sellers in Q2 2026
- TRV GP V, LLC Trimmed-$35.6M
- Vestal Point Capital, LP Trimmed-$29.4M
- Cormorant Asset Management, LP Trimmed-$12.5M
- UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Trimmed-$11.5M
- T. Rowe Price Investment Management, Inc. Trimmed-$9.5M
- Capital International Investors Trimmed-$7.3M
- Millennium Management LLC Trimmed-$6.9M
- Freestone Grove Partners LP Sold out-$4.0M
- Price T Rowe Associates Inc Trimmed-$3.3M
- Sio Capital Management, LLC Trimmed-$2.5M
The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $91.1M and sold $140M; 56 added and 46 trimmed.
Schedule 13D and 13G filings on RAPP
Owners of more than 5% must file within days, so these can be newer than the 13F data.
- 2026-01-21BlackRock, Inc. SCHEDULE 13G filed by Rapport Therapeutics Inc.Schedule 13G
- 2025-02-13Third Rock Ventures V, L.P. SCHEDULE 13G filed by Rapport Therapeutics Inc.Schedule 13G
Questions about RAPP ownership
- Who owns RAPP stock?
- 161 institutional investment managers reported RAPP positions in their Form 13F filings for Q2 2026, holding 51,273,834 shares worth $2.1B in total. FMR LLC reported the largest position.
- Are funds buying or selling RAPP?
- In Q2 2026, 26 managers opened new RAPP positions, 56 added, 46 trimmed and 12 sold out. Managers that filed in both quarters sold a net 1,222,219 shares.
- How current is this RAPP institutional ownership data?
- It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to RAPP by CUSIP. Options are left out. RAPP news and filings · RAPP insider trades · Top funds