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RA CAPITAL MANAGEMENT, L.P.
Track RA CAPITAL MANAGEMENT, L.P.'s latest SEC 13F filing: top biotech and life-sciences stock positions, portfolio weights, largest holdings, and quarter-over-quarter changes.
Updated quarterly · Last refreshed Sep 18, 2026
Showing 6 Stocks Out Of 73. Click On The Tickers For More Details
| Stock | Compnay Name | Shares Held | Market Value | % of Portfolio | QoQ Change |
|---|---|---|---|---|---|
 QTTB | Q32 BIO INC | 2.33 M | 29.71 M | 0.3 | |
 XNCR | XENCOR INC | 5.27 M | 84.92 M | 0.7 | |
 DFTX | DEFINIUM THERAPEUTICS INC | 1.50 M | 70.56 M | 0.6 | |
 PEPG | PEPGEN INC | 20.06 M | 36.12 M | 0.3 | |
 MNPR | MONOPAR THERAPEUTICS INC | 667.21 K | 61.78 M | 0.5 | |
 ORKA | ORUKA THERAPEUTICS INC | 1.55 M | 147.95 M | 1.3 |
Market Value
$ 7.40 B
Holdings
73
Period
Q2 2026
Holdings in Top 20
%
QoQ Changes
21.93 %