MondegarAI
RA CAPITAL MANAGEMENT, L.P.

Q1 2026 · 13F-HR

RA CAPITAL MANAGEMENT, L.P.holdings as filed

Filed 2026-05-15 · accession 0001104659-26-062637

$9.44B
Reported value
85
Positions
2026-03-31
Period end
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The Brief · RA CAPITAL MANAGEMENT, L.P. · Q1 2026

AI · grounded in 13F

RA CAPITAL MANAGEMENT, L.P. closed its position in CDTX for a reduction of $743.4M. The fund also exited positions in RNAGBP and ACLXGBX, reducing exposure by $623.3M and $82.6M respectively. On the buy side, the fund established a new position in SGP worth $207.8M and added ZLAB with a $107.4M investment. Additionally, the fund increased its share count in DNTH by 62.0%.

Holdings as filed

CUSIPTickerIssuerValue% port.SharesClassVoting
04351P101ASNDUSDASCENDIS PHARMA A/S - ADR$2.35B24.9%10,281,496CommonSOLE
92243G108PCVXVAXCYTE INC$666.8M7.07%11,474,599CommonSOLE
76243J105RYTMRHYTHM PHARMACEUTICALS INC$579.8M6.14%6,666,837CommonSOLE
90240B106TYRATYRA BIOSCIENCES INC$467.2M4.95%12,198,625CommonSOLE
829401108SIONSIONNA THERAPEUTICS INC$397.1M4.21%9,905,045CommonSOLE
28036F105EWTXEDGEWISE THERAPEUTICS INC$328.5M3.48%10,428,437CommonSOLE
N62509109NAMSNEWAMSTERDAM PHARMA CO NV$305.7M3.24%9,550,191CommonSOLE
670703107NUVLNUVALENT INC-A$259.6M2.75%2,534,145CommonSOLE
252828108DNTHDIANTHUS THERAPEUTICS INC$219.2M2.32%2,611,733CommonSOLE
603170101MLYSMINERALYS THERAPEUTICS INC$208.4M2.21%7,692,750CommonSOLE
85220G109SGPSPYGLASS PHARMA INC$207.8M2.20%8,021,117CommonSOLE
Y95308105WVEWAVE LIFE SCIENCES LTD$195.6M2.07%26,975,505CommonSOLE
81734D104SEPNSEPTERNA INC$168.1M1.78%6,995,858CommonSOLE
254604101IRONDISC MEDICINE INC$156.7M1.66%2,450,221CommonSOLE
47103J105JANXJANUX THERAPEUTICS INC$155.5M1.65%11,189,693CommonSOLE
09058V103BCRXBIOCRYST PHARMACEUTICALS INC$150.7M1.60%15,827,186CommonSOLE
055477103BCAXBICARA THERAPEUTICS INC$144.3M1.53%7,255,993CommonSOLE
74006W207PRAXPRAXIS PRECISION MEDICINES I$120.4M1.28%373,787CommonSOLE
G3855L106GHRSGH RESEARCH PLC$107.9M1.14%7,676,697CommonSOLE
98887Q104ZLABZAI LAB LTD-ADR$107.4M1.14%5,707,262CommonSOLE
877619106TSHATAYSHA GENE THERAPIES INC$105.3M1.12%23,555,648CommonSOLE
929033207VORVOR BIOPHARMA INC$96.4M1.02%5,404,998CommonSOLE
374163103GERNGERON CORP$95.0M1.01%63,771,366CommonSOLE
82835W108SPRYARS PHARMACEUTICALS INC$87.2M0.92%10,860,977CommonSOLE
803607100SRPTSAREPTA THERAPEUTICS INC$84.9M0.90%3,902,596CommonSOLE
00773J202SYRESPYRE THERAPEUTICS INC$81.8M0.87%1,621,620CommonSOLE
30054Y107EVMNEVOMMUNE INC$80.3M0.85%3,494,638CommonSOLE
28658R106CLYMCLIMB BIO INC$77.4M0.82%11,300,939CommonSOLE
83422E204SLDBSOLID BIOSCIENCES INC$67.2M0.71%9,339,978CommonSOLE
04317A107ARTVARTIVA BIOTHERAPEUTICS INC$63.5M0.67%9,853,302CommonSOLE
36322Q206DMRADAMORA THERAPEUTICS INC$62.1M0.66%2,399,310CommonSOLE
98401F105XNCRXENCOR INC$59.1M0.63%4,897,237CommonSOLE
50180M108LBRXLB PHARMACEUTICALS INC$54.5M0.58%2,208,604CommonSOLE
008064206JBIOJADE BIOSCIENCES INC$51.6M0.55%3,671,083CommonSOLE
00509G209ABOSACUMEN PHARMACEUTICALS INC$49.5M0.52%20,992,669CommonSOLE
35104E100FDMT4D MOLECULAR THERAPEUTICS IN$47.0M0.50%5,049,779CommonSOLE
359616109FULCFULCRUM THERAPEUTICS INC$46.4M0.49%6,053,960CommonSOLE
14070B309CAPRCAPRICOR THERAPEUTICS INC$45.8M0.49%1,507,844CommonSOLE
15673T100IPSCCENTURY THERAPEUTICS INC$40.1M0.43%17,754,430CommonSOLE
68062P106OLMAOLEMA PHARMACEUTICALS INC$38.8M0.41%2,600,000CommonSOLE
52635N103LENZLENZ THERAPEUTICS INC$38.2M0.41%4,178,823CommonSOLE
61023L207MNPRMONOPAR THERAPEUTICS INC$36.6M0.39%667,207CommonSOLE
713317105PEPGPEPGEN INC$35.5M0.38%20,064,545CommonSOLE
25056L103DSGNDESIGN THERAPEUTICS INC$31.6M0.34%2,972,973CommonSOLE
604749101MIRMMIRUM PHARMACEUTICALS INC$29.4M0.31%318,554CommonSOLE
09077V100BIOABIOAGE LABS INC$28.9M0.31%1,650,648CommonSOLE
52886X107LXEOLEXEO THERAPEUTICS INC$28.7M0.30%5,000,000CommonSOLE
045396207ASMBASSEMBLY BIOSCIENCES INC$28.3M0.30%1,020,410CommonSOLE
76200L309RZLTREZOLUTE INC$28.0M0.30%9,180,000CommonSOLE
01021M104AKTSAKTIS ONCOLOGY INC$26.9M0.28%1,503,084CommonSOLE
00166B105ALXOALX ONCOLOGY HOLDINGS INC$26.1M0.28%13,011,849CommonSOLE
00461U105ACRSACLARIS THERAPEUTICS INC$25.5M0.27%6,804,072CommonSOLE
690469101OVIDOVID THERAPEUTICS INC$23.8M0.25%10,714,000CommonSOLE
65487U108NKTXNKARTA INC$22.8M0.24%10,805,129CommonSOLE
89422G107TVTXTRAVERE THERAPEUTICS INC$22.2M0.24%746,841CommonSOLE
384747101GRALGRAIL INC$22.1M0.23%428,266CommonSOLE
12529R107CCCCC4 THERAPEUTICS INC$21.0M0.22%8,000,000CommonSOLE
75955J402RLMDRELMADA THERAPEUTICS INC$20.5M0.22%2,947,369CommonSOLE
08205P209BNTCBENITEC BIOPHARMA INC$19.7M0.21%1,850,000CommonSOLE
10919W405DRUGBRIGHT MINDS BIOSCIENCES INC$19.3M0.20%265,000CommonSOLE
869367201STROSUTRO BIOPHARMA INC$17.8M0.19%715,307CommonSOLE
21217B100CTNMCONTINEUM THERAPEUTICS INC-A$16.9M0.18%1,296,012CommonSOLE
78397T202SABSSAB BIOTHERAPEUTICS INC$16.9M0.18%4,401,500CommonSOLE
457730109INSPINSPIRE MEDICAL SYSTEMS INC$16.8M0.18%325,663CommonSOLE
03675P102AVRANTERIS TECHNOLOGIES GLOBAL$16.6M0.18%3,000,000CommonSOLE
68277Q105OKURONKURE THERAPEUTICS INC-A$16.6M0.18%3,998,333CommonSOLE
433313103HNGEHINGE HEALTH INC-A$14.1M0.15%364,613CommonSOLE
81663L200WGSGENEDX HOLDINGS CORP$13.5M0.14%209,887CommonSOLE
946784105WAYWAYSTAR HOLDING CORP$12.8M0.14%529,400CommonSOLE
G4444S107HLXCHELIX ACQUISITION CORP-CL A$12.7M0.13%1,250,000CommonSOLE
696389402PALIPALISADE BIO INC$12.5M0.13%7,124,116CommonSOLE
004890109ACRVACRIVON THERAPEUTICS INC$11.6M0.12%8,340,508CommonSOLE
04965N104RNAATRIUM THERAPEUTICS INC$11.6M0.12%864,102CommonSOLE
48576U205KPTIKARYOPHARM THERAPEUTICS INC$10.7M0.11%1,917,354CommonSOLE
05338F306AVTXAVALO THERAPEUTICS INC$9.9M0.10%662,968CommonSOLE
G70077105PCSCPERCEPTIVE CAPITAL SOLUTIONS$8.2M0.09%750,000CommonSOLE
007002207ACETADICET BIO INC$8.1M0.09%1,182,624CommonSOLE
N62509117NAMSWNEWAMSTERDAM PHARMA CO NV-27$6.7M0.07%333,333CommonSOLE
221015100CRVSCORVUS PHARMACEUTICALS INC$6.6M0.07%450,000CommonSOLE
753018100RANIRANI THERAPEUTICS HOLDINGS-A$6.2M0.07%8,500,000CommonSOLE
29446K106EQEQUILLIUM INC$6.2M0.07%3,096,336CommonSOLE
95075A107HOWLWEREWOLF THERAPEUTICS INC$5.6M0.06%6,681,307CommonSOLE
556099109MGNXMACROGENICS INC$5.4M0.06%1,864,176CommonSOLE
56565P103MPLTMAPLIGHT THERAPEUTICS INC$5.0M0.05%248,294CommonSOLE
696077601PTNPALATIN TECHNOLOGIES INC$1.2M0.01%70,000CommonSOLE

Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.