Fund · 13F portfolio

RA Capital Management

RA Capital Management · 2026 Q2 13F · period ended Jun 30, 2026 · filed Aug 14, 2026
Reported value
$11.5B
2026 Q2 filing
Stocks held
81
as of Jun 30, 2026
Opened / added
17 / 9
vs previous quarter
Trimmed / exited
9 / 18
vs previous quarter

Holdings · 2026 Q2

TickerCompanyWeightSharesChange
ASNDAscendis Pharma A/S23.83%10,281,496NEW
PBLSPARABILIS MEDICINES INC6.88%28,933,371NEW
RYTMRHYTHM PHARMACEUTICALS INC6.43%6,666,837HELD
PCVXVaxcyte, Inc.5.80%11,474,599HELD
SIONSionna Therapeutics, Inc.3.79%9,905,045HELD
TYRATYRA BIOSCIENCES INC3.39%12,198,625HELD
EWTXEdgewise Therapeutics, Inc.2.96%8,392,730TRIMMED (-19.5%)
NAMSNewAmsterdam Pharma Co N.V.2.81%9,550,191HELD
COAGHEMAB THERAPEUTICS HOLDINGS2.49%7,808,627NEW
SEPNSEPTERNA INC2.04%6,995,858HELD
BCAXBICARA THERAPEUTICS INC1.87%7,255,993HELD
MLYSMINERALYS THERAPEUTICS INC1.80%7,692,750HELD
GHRSGH Research PLC1.78%7,636,813TRIMMED (-0.5%)
IRONDISC MEDICINE INC1.56%2,450,221HELD
SGPSPYGLASS PHARMA INC1.55%8,021,117HELD
ARTVArtiva Biotherapeutics, Inc.1.51%17,955,642ADDED (+82.2%)
JANXJANUX THERAPEUTICS INC1.49%11,189,693HELD
TSHATaysha Gene Therapies, Inc.1.39%23,555,648HELD
BCRXBIOCRYST PHARMACEUTICALS INC1.38%15,827,186HELD
WVEWave Life Sciences, Inc.1.36%26,975,505HELD
ABVXAbivax S.A.1.31%1,132,557NEW
ORKAOruka Therapeutics, Inc.1.29%1,554,597NEW
CLYMCLIMB BIO INC1.28%11,300,939HELD
SLDBSOLID BIOSCIENCES INC1.04%12,036,126ADDED (+28.9%)
ZLABZai Lab Ltd0.95%5,743,533ADDED (+0.6%)
SPRYARS Pharmaceuticals, Inc.0.76%10,860,977HELD
XNCRXENCOR INC0.74%5,274,274ADDED (+7.7%)
JBIOJADE BIOSCIENCES INC0.71%3,671,083HELD
NTLAIntellia Therapeutics, Inc.0.67%4,526,926NEW
LBRXLB PHARMACEUTICALS INC0.62%2,208,604HELD
DFTXDEFINIUM THERAPEUTICS INC0.61%1,500,000NEW
ACRSACLARIS THERAPEUTICS INC0.58%12,723,026ADDED (+87.0%)
FDMT4D Molecular Therapeutics, Inc.0.58%5,049,779HELD
SANASANA BIOTECHNOLOGY INC0.57%18,750,000NEW
DMRADamora Therapeutics, Inc.0.54%2,399,702HELD
MNPRMONOPAR THERAPEUTICS INC0.54%667,207HELD
ABOSACUMEN PHARMACEUTICALS INC0.49%20,992,669HELD
GERNGERON CORP0.48%42,809,751TRIMMED (-32.9%)
RZLTREZOLUTE INC0.43%9,445,039ADDED (+2.9%)
EVMNEVOMMUNE INC0.40%3,494,638HELD
VORVOR BIOPHARMA INC0.38%2,402,095TRIMMED (-55.6%)
IPSCCENTURY THERAPEUTICS INC0.38%17,754,430HELD
AKTSAktis Oncology, Inc.0.37%1,314,405TRIMMED (-12.6%)
BIOABIOAGE LABS INC0.36%1,671,648ADDED (+1.3%)
CCCCC4 THERAPEUTICS INC0.32%8,000,000HELD
MIRMMirum Pharmaceuticals, Inc.0.32%318,554HELD
CAPRCAPRICOR THERAPEUTICS INC0.32%1,507,844HELD
PEPGPepGen Inc.0.31%20,064,545HELD
PRLDPRELUDE THERAPEUTICS INC0.30%6,475,882NEW
NKTXNKARTA INC0.27%10,805,129HELD
QTTBQ32 BIO INC0.26%2,332,457NEW
AVRANTERIS TECHNOLOGIES GLOBAL0.26%3,000,000HELD
EDITEDITAS MEDICINE INC0.25%8,889,000NEW
OVIDOVID THERAPEUTICS INC0.25%10,500,968TRIMMED (-2.0%)
ASMBASSEMBLY BIOSCIENCES INC0.24%1,020,410HELD
ALXOALX ONCOLOGY HOLDINGS INC0.23%13,011,849HELD
BNTCBENITEC BIOPHARMA INC0.22%1,850,000HELD
LENZLENZ THERAPEUTICS INC0.21%4,178,823HELD
LXEOLEXEO THERAPEUTICS INC0.20%5,000,000HELD
ACRVACRIVON THERAPEUTICS INC0.19%12,229,396ADDED (+46.6%)
ALTAltimmune, Inc.0.17%6,500,000NEW
KPTIKARYOPHARM THERAPEUTICS INC0.16%1,917,354HELD
DRUGBRIGHT MINDS BIOSCIENCES INC0.16%265,000HELD
AVTXAVALO THERAPEUTICS INC0.16%1,000,000ADDED (+50.8%)
OKURONKURE THERAPEUTICS INC-A0.16%3,998,333HELD
FTHFAETH THERAPEUTICS INC0.16%722,020NEW
AURAAURA BIOSCIENCES INC0.15%2,500,000NEW
SABSSAB BIOTHERAPEUTICS INC0.15%4,401,500HELD
SPTXSEAPORT THERAPEUTICS INC0.13%700,000NEW
PALIPALISADE BIO INC0.13%7,124,116HELD
HLXCHelix Acquisition Corp. III0.12%1,250,000HELD
WAYWAYSTAR HOLDING CORP0.09%529,400HELD
EQEQUILLIUM INC0.09%3,096,336HELD
MGNXMACROGENICS INC0.07%1,864,176HELD
ACETADICET BIO INC0.07%932,624TRIMMED (-21.1%)
CRVSCORVUS PHARMACEUTICALS INC0.06%450,000HELD
RANIRANI THERAPEUTICS HOLDINGS-A0.06%8,500,000HELD
JATTJATT II Acquisition Corp.0.05%500,000NEW
AMANAmanat Acquisition Corp.0.03%375,000NEW
HOWLWEREWOLF THERAPEUTICS INC0.01%2,387,744TRIMMED (-64.3%)
PTNPALATIN TECHNOLOGIES INC0.01%62,124TRIMMED (-11.3%)

The weights above sum to 98.5% of the fund’s reported 13F value. Only positions matched to a U.S.-listed ticker are listed; the remainder sits in unmatched or non-equity positions in the filing.

Exited this quarter: ASND, CTNM, DNTH, DSGN, FULC, GRAL, HNGE, INSP, MPLT, OLMA, PRAX, RLMD, RNA, SRPT, STRO, SYRE, TVTX, WGS.

Source: SEC Form 13F filing for the quarter ended Jun 30, 2026, filed Aug 14, 2026. CIK 0001346824. Change labels compare with the fund’s previous quarterly filing. 13F filings cover long positions only.

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