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  • RA CAPITAL MANAGEMENT, L.P. (Data extracted from 13F, 13D, 13G and Form 4)

RA CAPITAL MANAGEMENT, L.P.

AUM: $11.32 B
13-F Portfolio Value: $9.44 B
Last 13-F Filed: Q1 2026
Concentration in top 10: 61.29%
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Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
ASNDASCENDIS PHARMA A/S - ADR19.52%10,281,496$2,351,686,580No Change$228.7313F
RYTMRHYTHM PHARMACEUTICALS INC4.81%6,666,837$579,814,814No Change$86.9713F
TYRATYRA BIOSCIENCES INC3.88%12,198,625$467,207,338No Change$38.313F
SIONSIONNA THERAPEUTICS INC3.30%9,905,045$397,093,254No Change$40.0913F
EWTXEDGEWISE THERAPEUTICS INC2.73%10,428,437$328,495,766No Change$31.513F
NAMSNEWAMSTERDAM PHARMA CO NV2.54%9,550,191$305,701,614No Change$32.0113F
SEPNSEPTERNA INC1.40%6,995,858$168,110,468No Change$24.0313F
JANXJANUX THERAPEUTICS INC1.29%11,189,693$155,536,733No Change$13.913F
BCRXBIOCRYST PHARMACEUTICALS INC1.25%15,827,186$150,674,811No Change$9.5213F
PRAXPRAXIS PRECISION MEDICINES I1.00%373,787$120,430,434No Change$322.1913F
GHRSGH RESEARCH PLC0.90%7,676,697$107,934,360No Change$14.0613F
TSHATAYSHA GENE THERAPIES INC0.87%23,555,648$105,293,747No Change$4.4713F
GERNGERON CORP0.79%63,771,366$95,019,335No Change$1.4913F
SPRYARS PHARMACEUTICALS INC0.72%10,860,977$87,213,645No Change$8.0313F
SYRESPYRE THERAPEUTICS INC0.68%1,621,620$81,794,513No Change$50.4413F
LBRXLB PHARMACEUTICALS INC0.45%2,208,604$54,464,175No Change$24.6613F
JBIOJADE BIOSCIENCES INC0.43%3,671,083$51,578,716No Change$14.0513F
FULCFULCRUM THERAPEUTICS INC0.39%6,053,960$46,433,873No Change$7.6713F
CAPRCAPRICOR THERAPEUTICS INC0.38%1,507,844$45,838,458No Change$30.413F
LENZLENZ THERAPEUTICS INC0.32%4,178,823$38,236,230No Change$9.1513F
OLMAOLEMA PHARMACEUTICALS INC0.32%2,600,000$38,766,000No Change$14.9113F
MNPRMONOPAR THERAPEUTICS INC0.30%667,207$36,556,272No Change$54.7913F
PEPGPEPGEN INC0.29%20,064,545$35,514,245No Change$1.7713F
ASMBASSEMBLY BIOSCIENCES INC0.24%1,020,410$28,316,378No Change$27.7513F
LXEOLEXEO THERAPEUTICS INC0.24%5,000,000$28,700,000No Change$5.7413F
RZLTREZOLUTE INC0.23%9,180,000$27,999,000No Change$3.0513F
OVIDOVID THERAPEUTICS INC0.20%10,714,000$23,785,080No Change$2.2213F
NKTXNKARTA INC0.19%10,805,129$22,798,822No Change$2.1113F
GRALGRAIL INC0.18%428,266$22,132,787No Change$51.6813F
CCCCC4 THERAPEUTICS INC0.17%8,000,000$21,040,000No Change$2.6313F
BNTCBENITEC BIOPHARMA INC0.16%1,850,000$19,702,500No Change$10.6513F
SABSSAB BIOTHERAPEUTICS INC0.14%4,401,500$16,857,745No Change$3.8313F
PALIPALISADE BIO INC0.10%7,124,116$12,467,203No Change$1.7513F
AVTXAVALO THERAPEUTICS INC0.08%662,968$9,898,112No Change$14.9313F
PCSCPERCEPTIVE CAPITAL SOLUTIONS0.07%750,000$8,227,500No Change$10.9713F
NAMSWNEWAMSTERDAM PHARMA CO NV-270.06%333,333$6,679,993No Change$20.0413F
RANIRANI THERAPEUTICS HOLDINGS-A0.05%8,500,000$6,245,800No Change$0.7313F
PTNPALATIN TECHNOLOGIES INC0.01%70,000$1,219,400No Change$17.4213F