Rapport Therapeutics
RAPP · NASDAQ
$29.37+$0.77 (+2.69%)TodayMarket closed ·
Prev close $28.60
Who owns RAPP
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 69.2% of RAPP’s shares.
- Third Rock Ventures, LLC15.2%
- Fidelity Management & Research Company LLC15.0%
- ARCH Venture Partners7.8%
- Capital International Investors6.1%
- Next 6 largest institutions25.1%
- All other shareholders30.8%
| Holder | Shares | % of shares |
|---|---|---|
| Third Rock Ventures, LLC | 7.25M | 15.16% |
| Fidelity Management & Research Company LLC | 7.17M | 15.00% |
| ARCH Venture Partners | 3.73M | 7.80% |
| Capital International Investors | 2.92M | 6.11% |
| Cormorant Asset Management, LP | 2.66M | 5.56% |
| BlackRock Institutional Trust Company, N.A. | 2.39M | 5.00% |
| Sofinnova Investments, Inc | 1.90M | 3.98% |
| Johnson & Johnson Innovation-JJDC, Inc. | 1.78M | 3.73% |
| Goldman Sachs & Co. LLC | 1.66M | 3.48% |
| Polar Capital LLP | 1.61M | 3.36% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| American Funds SMALLCAP World Fund | 3.38M | 7.07% |
| Fidelity Growth Company Fund | 2.25M | 4.70% |
| Polar Capital Biotechnology Fund | 1.52M | 3.19% |
| Vanguard Total Stock Market Index Fund | 986.73K | 2.06% |
| iShares Russell 2000 ETF | 794.96K | 1.66% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $25.24M (33 trades) of RAPP on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Ceesay Abraham | Sale | 1.15K | $35.17K |
| Ceesay Abraham | Sale | 3.38K | $108.11K |
| Gault Cheryl | Sale | 2.08K | $70.04K |
| Gault Cheryl | Sale | 7.92K | $261.81K |
| Ceesay Abraham | Sale | 43 | $1.77K |
| Ceesay Abraham | Sale | 215 | $8.57K |
| Ceesay Abraham | Sale | 1.95K | $76.23K |
| Ceesay Abraham | Sale | 1.07K | $49.19K |
| Ceesay Abraham | Sale | 7.14K | $325.31K |
| Yeleswaram Krishnaswamy | Sale | 16.20K | $827.18K |
Short interest
Settled Sep 30, 2026
- Shares short
- 3.19M
- Days to cover
- 4.84
- % of shares outstanding
- 6.68%
- Average daily volume
- 660.10K
- Change since last report
- +42.1%
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