Holders — by stockHoldings — by fund
RA CAPITAL MANAGEMENT, L.P.
Everything this manager disclosed owning in US-listed stocks — its complete Form 13F portfolio · as of 2026-06-30 · filed with the SEC up to 45 days after quarter end · CIK 0001346824
$11.51B
disclosed book value
84
positions
23.8%
largest position share
Positions, as of 2026-06-30
top 84 of 84 · 13F covers long US-listed positions only — cash, bonds, private and foreign stakes are not disclosed · PUT/CALL tags = options positions (share-equivalents), not shares held
| # | Issuer | Shares | Value | % of book |
|---|---|---|---|---|
| 1 | ASCENDIS PHARMA A/S | 10.3M | $2.74B | 23.8% |
| 2 | PBLSPARABILIS MEDICINES INC | 28.9M | $791.9M | 6.9% |
| 3 | RYTMRHYTHM PHARMACEUTICALS INC | 6.7M | $740.2M | 6.4% |
| 4 | PCVXVAXCYTE INC | 11.5M | $667.0M | 5.8% |
| 5 | SIONSIONNA THERAPEUTICS INC | 9.9M | $435.7M | 3.8% |
| 6 | TYRATYRA BIOSCIENCES INC | 12.2M | $389.6M | 3.4% |
| 7 | EWTXEDGEWISE THERAPEUTICS INC | 8.4M | $341.0M | 3% |
| 8 | NEWAMSTERDAM PHARMA CO NV | 9.6M | $323.7M | 2.8% |
| 9 | COAGHEMAB THERAPEUTICS HOLDINGS | 7.8M | $286.8M | 2.5% |
| 10 | SEPNSEPTERNA INC | 7.0M | $234.3M | 2% |
| 11 | BCAXBICARA THERAPEUTICS INC | 7.3M | $215.4M | 1.9% |
| 12 | MLYSMINERALYS THERAPEUTICS INC | 7.7M | $207.6M | 1.8% |
| 13 | GH RESEARCH PLC | 7.6M | $205.3M | 1.8% |
| 14 | IRONDISC MEDICINE INC | 2.5M | $179.2M | 1.6% |
| 15 | SGPSPYGLASS PHARMA INC | 8.0M | $178.6M | 1.6% |
| 16 | ARTVARTIVA BIOTHERAPEUTICS INC | 18.0M | $174.2M | 1.5% |
| 17 | JANXJANUX THERAPEUTICS INC | 11.2M | $171.9M | 1.5% |
| 18 | TSHATAYSHA GENE THERAPIES INC | 23.6M | $160.4M | 1.4% |
| 19 | BCRXBIOCRYST PHARMACEUTICALS INC | 15.8M | $158.3M | 1.4% |
| 20 | WAVE LIFE SCIENCES LTD | 27.0M | $156.7M | 1.4% |
| 21 | NUVALENT INC-A | 1.2M | $153.9M | 1.3% |
| 22 | ABVXABIVAX SA-ADR | 1.1M | $150.9M | 1.3% |
| 23 | ORKAORUKA THERAPEUTICS INC | 1.6M | $148.0M | 1.3% |
| 24 | CLYMCLIMB BIO INC | 11.3M | $147.4M | 1.3% |
| 25 | SLDBSOLID BIOSCIENCES INC | 12.0M | $120.2M | 1% |
| 26 | ZLABZAI LAB LTD-ADR | 5.7M | $109.1M | 0.9% |
| 27 | SPRYARS PHARMACEUTICALS INC | 10.9M | $87.0M | 0.8% |
| 28 | XNCRXENCOR INC | 5.3M | $84.9M | 0.7% |
| 29 | JBIOJADE BIOSCIENCES INC | 3.7M | $81.6M | 0.7% |
| 30 | NTLAINTELLIA THERAPEUTICS INC | 4.5M | $76.6M | 0.7% |
| 31 | LBRXLB PHARMACEUTICALS INC | 2.2M | $71.7M | 0.6% |
| 32 | DFTXDEFINIUM THERAPEUTICS INC | 1.5M | $70.6M | 0.6% |
| 33 | ACRSACLARIS THERAPEUTICS INC | 12.7M | $67.3M | 0.6% |
| 34 | FDMT4D MOLECULAR THERAPEUTICS IN | 5.0M | $67.2M | 0.6% |
| 35 | SANASANA BIOTECHNOLOGY INC | 18.8M | $65.4M | 0.6% |
| 36 | DAMORA THERAPEUTICS INC | 2.4M | $62.4M | 0.5% |
| 37 | MNPRMONOPAR THERAPEUTICS INC | 667,207 | $61.8M | 0.5% |
| 38 | ABOSACUMEN PHARMACEUTICALS INC | 21.0M | $56.1M | 0.5% |
| 39 | GERNGERON CORP | 42.8M | $54.8M | 0.5% |
| 40 | RZLTREZOLUTE INC | 9.4M | $49.1M | 0.4% |
| 41 | EVMNEVOMMUNE INC | 3.5M | $46.4M | 0.4% |
| 42 | VORVOR BIOPHARMA INC | 2.4M | $44.2M | 0.4% |
| 43 | IPSCCENTURY THERAPEUTICS INC | 17.8M | $43.5M | 0.4% |
| 44 | AKTSAKTIS ONCOLOGY INC | 1.3M | $42.4M | 0.4% |
| 45 | BIOABIOAGE LABS INC | 1.7M | $41.0M | 0.4% |
| 46 | CCCCC4 THERAPEUTICS INC | 8.0M | $37.4M | 0.3% |
| 47 | MIRMMIRUM PHARMACEUTICALS INC | 318,554 | $37.3M | 0.3% |
| 48 | CAPRCAPRICOR THERAPEUTICS INC | 1.5M | $36.3M | 0.3% |
| 49 | PEPGPEPGEN INC | 20.1M | $36.1M | 0.3% |
| 50 | PRLDPRELUDE THERAPEUTICS INC | 6.5M | $34.5M | 0.3% |
| 51 | NKTXNKARTA INC | 10.8M | $30.6M | 0.3% |
| 52 | QTTBQ32 BIO INC | 2.3M | $29.7M | 0.3% |
| 53 | AVRANTERIS TECHNOLOGIES GLOBAL | 3.0M | $29.6M | 0.3% |
| 54 | EDITEDITAS MEDICINE INC | 8.9M | $28.8M | 0.3% |
| 55 | OVIDOVID THERAPEUTICS INC | 10.5M | $28.2M | 0.2% |
| 56 | ASMBASSEMBLY BIOSCIENCES INC | 1.0M | $28.0M | 0.2% |
| 57 | ALXOALX ONCOLOGY HOLDINGS INC | 13.0M | $26.9M | 0.2% |
| 58 | BNTCBENITEC BIOPHARMA INC | 1.9M | $24.8M | 0.2% |
| 59 | LENZLENZ THERAPEUTICS INC | 4.2M | $23.7M | 0.2% |
| 60 | LXEOLEXEO THERAPEUTICS INC | 5.0M | $23.3M | 0.2% |
| 61 | ACRVACRIVON THERAPEUTICS INC | 12.2M | $21.8M | 0.2% |
| 62 | ALTALTIMMUNE INC | 6.5M | $19.8M | 0.2% |
| 63 | KPTIKARYOPHARM THERAPEUTICS INC | 1.9M | $18.7M | 0.2% |
| 64 | DRUGBRIGHT MINDS BIOSCIENCES INC | 265,000 | $18.6M | 0.2% |
| 65 | AVTXAVALO THERAPEUTICS INC | 1.0M | $18.5M | 0.2% |
| 66 | OKURONKURE THERAPEUTICS INC-A | 4.0M | $18.2M | 0.2% |
| 67 | FTHFAETH THERAPEUTICS INC | 722,020 | $18.1M | 0.2% |
| 68 | AURAAURA BIOSCIENCES INC | 2.5M | $17.8M | 0.2% |
| 69 | SABSSAB BIOTHERAPEUTICS INC | 4.4M | $17.2M | 0.1% |
| 70 | SPTXSEAPORT THERAPEUTICS INC | 700,000 | $15.2M | 0.1% |
| 71 | PALIPALISADE BIO INC | 7.1M | $14.9M | 0.1% |
| 72 | HELIX ACQUISITION CORP-CL A | 1.3M | $13.3M | 0.1% |
| 73 | WAYWAYSTAR HOLDING CORP | 529,400 | $10.9M | 0.1% |
| 74 | EQEQUILLIUM INC | 3.1M | $9.9M | 0.1% |
| 75 | MGNXMACROGENICS INC | 1.9M | $8.6M | 0.1% |
| 76 | PERCEPTIVE CAPITAL SOLUTIONS | 750,000 | $8.2M | 0.1% |
| 77 | ACETADICET BIO INC | 932,624 | $8.1M | 0.1% |
| 78 | NEWAMSTERDAM PHARMA CO NV-27 | 333,333 | $7.1M | 0.1% |
| 79 | CRVSCORVUS PHARMACEUTICALS INC | 450,000 | $6.7M | 0.1% |
| 80 | RANIRANI THERAPEUTICS HOLDINGS-A | 8.5M | $6.5M | 0.1% |
| 81 | JATT II ACQUISITION CORP | 500,000 | $5.7M | 0% |
| 82 | AMANAT ACQUISITION CORP CL A | 375,000 | $3.8M | 0% |
| 83 | HOWLWEREWOLF THERAPEUTICS INC | 2.4M | $859,349 | 0% |
| 84 | PTNPALATIN TECHNOLOGIES INC | 62,124 | $670,318 | 0% |
Source: SEC Form 13F-HR, reporting period 2026-06-30. Values are the manager's filed June-30-style quarter-end marks, not live prices. Research, not investment advice.