Rock Springs Capital Management

Rock Springs Capital Management as of June 30, 2026

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 104 positions in its portfolio as reported in the June 2026 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Revolution Medicines (RVMD) 10.1 $207M 1.1M 187.28
Travere Therapeutics (TVTX) 6.0 $124M 2.2M 56.81
Eli Lilly & Co. (LLY) 5.8 $118M 99k 1199.43
Madrigal Pharmaceuticals (MDGL) 4.6 $94M 175k 536.95
Mirum Pharmaceuticals (MIRM) 4.6 $93M 798k 117.07
Rhythm Pharmaceuticals (RYTM) 3.8 $77M 693k 111.03
Kymera Therapeutics (KYMR) 2.5 $52M 453k 114.67
Argenx Se Sponsored Adr (ARGX) 2.4 $49M 53k 927.77
Ascendis Pharma A/s Ord Shs (ASND) 2.2 $45M 169k 266.72
Xenon Pharmaceuticals (XENE) 2.0 $41M 684k 60.36
Scholar Rock Hldg Corp (SRRK) 1.9 $39M 716k 55.00
Insmed Com Par $.01 (INSM) 1.9 $39M 362k 106.62
Penumbra (PEN) 1.8 $37M 116k 315.75
Structure Therapeutics Sponsored Ads (GPCR) 1.7 $34M 640k 53.67
Ultragenyx Pharmaceutical (RARE) 1.6 $32M 968k 33.39
Irhythm Technologies (IRTC) 1.6 $32M 270k 118.95
Intuitive Surgical Com New (ISRG) 1.5 $30M 77k 397.68
Agilon Health Com New (AGL) 1.4 $28M 263k 107.18
UnitedHealth (UNH) 1.3 $27M 64k 415.63
Celldex Therapeutics Com New (CLDX) 1.3 $26M 699k 37.21
Erasca (ERAS) 1.3 $26M 1.4M 18.32
Neurocrine Biosciences (NBIX) 1.2 $24M 145k 168.53
Enliven Therapeutics (ELVN) 1.2 $24M 465k 50.75
Tenet Healthcare Corp Com New (THC) 1.1 $23M 125k 187.08
Dex (DXCM) 1.1 $23M 343k 67.35
Aclaris Therapeutics (ACRS) 1.1 $23M 4.3M 5.29
Minimed Group (MMED) 1.1 $23M 1.5M 14.95
Boston Scientific Corporation (BSX) 1.1 $23M 529k 42.68
Pharvaris N V (PHVS) 1.1 $22M 648k 34.58
Avalyn Pharmaceuticals Com Shs 1.1 $22M 663k 32.92
Hemab Therapeutics Hldgs Com Shs 1.0 $21M 575k 36.73
Dyne Therapeutics (DYN) 1.0 $21M 942k 22.21
Alnylam Pharmaceuticals (ALNY) 1.0 $20M 67k 301.03
Cogent Biosciences (COGT) 1.0 $20M 516k 38.70
Agios Pharmaceuticals (AGIO) 1.0 $20M 533k 37.11
Newamsterdam Pharma Company Ordinary Shares (NAMS) 1.0 $20M 583k 33.89
Vera Therapeutics Cl A (VERA) 0.9 $18M 428k 42.91
Tarsus Pharmaceuticals (TARS) 0.9 $17M 277k 62.94
Heartflow Inc/Sh (HTFL) 0.8 $17M 574k 29.34
Mbx Biosciences (MBX) 0.8 $17M 298k 55.20
Cytokinetics Com New (CYTK) 0.8 $16M 188k 85.19
Bicara Therapeutics (BCAX) 0.8 $16M 535k 29.69
Parabilis Medicines 0.8 $16M 578k 27.37
Zai Lab Adr (ZLAB) 0.8 $16M 815k 19.00
Danaher Corporation (DHR) 0.7 $15M 76k 190.48
Tango Therapeutics (TNGX) 0.7 $14M 457k 31.26
Evolent Health Cl A (EVH) 0.7 $14M 2.5M 5.42
Ptc Therapeutics I (PTCT) 0.6 $13M 162k 81.57
Mineralys Therapeutics (MLYS) 0.6 $13M 485k 26.98
Zenas Biopharma (ZBIO) 0.6 $13M 502k 25.38
Ardelyx (ARDX) 0.6 $11M 2.2M 5.10
Inspire Med Sys (INSP) 0.5 $11M 244k 44.61
Bridgebio Pharma (BBIO) 0.5 $11M 145k 74.48
Alkermes SHS (ALKS) 0.5 $11M 200k 52.40
Summit Therapeutics (SMMT) 0.5 $10M 715k 14.57
Brooks Automation (AZTA) 0.5 $10M 403k 25.52
Indivior Pharmaceuticals (INDV) 0.5 $10M 246k 41.03
Stryker Corporation (SYK) 0.4 $9.1M 29k 314.84
Amylyx Pharmaceuticals (AMLX) 0.4 $9.0M 500k 17.96
Caris Life Sciences (CAI) 0.4 $8.7M 488k 17.82
Omada Health (OMDA) 0.4 $8.2M 373k 21.95
Compass Therapeutics (CMPX) 0.4 $7.7M 3.5M 2.19
Immunome (IMNM) 0.4 $7.4M 348k 21.19
Edap Tms S A Sponsored Adr (FOCL) 0.4 $7.2M 1.4M 5.18
Phreesia (PHR) 0.4 $7.2M 697k 10.29
Omeros Corporation (OMER) 0.3 $6.8M 719k 9.51
Definium Therapeutics Com Shs (DFTX) 0.3 $6.7M 143k 47.04
Corcept Therapeutics Incorporated (CORT) 0.3 $6.3M 72k 86.95
Janux Therapeutics (JANX) 0.3 $5.6M 367k 15.36
Mobia Med Common Stock 0.3 $5.6M 418k 13.40
Arcus Biosciences Incorporated (RCUS) 0.3 $5.5M 180k 30.83
Thermo Fisher Scientific (TMO) 0.2 $5.0M 10k 501.36
Trevi Therapeutics (TRVI) 0.2 $4.8M 260k 18.65
Sionna Therapeutics (SION) 0.2 $4.4M 99k 43.99
CVS Caremark Corporation (CVS) 0.2 $4.1M 40k 103.45
Eyepoint Com New (EYPT) 0.2 $3.8M 269k 14.30
Ocular Therapeutix (OCUL) 0.2 $3.8M 384k 9.82
Spyre Therapeutics Com New (SYRE) 0.2 $3.8M 42k 88.78
Talphera Com New (TLPH) 0.2 $3.7M 3.6M 1.03
Roivant Sciences SHS (ROIV) 0.2 $3.6M 101k 35.39
Vaxcyte (PCVX) 0.2 $3.5M 60k 58.13
Neurogene (NGNE) 0.2 $3.4M 107k 31.45
Century Therapeutics (IPSC) 0.2 $3.2M 1.3M 2.45
Alphatec Hldgs Com New (ATEC) 0.2 $3.1M 360k 8.65
Novo-nordisk A S Adr (NVO) 0.1 $3.0M 64k 47.94
Olema Pharmaceuticals (OLMA) 0.1 $2.9M 235k 12.51
Nervgen Pharma Ord (NGEN) 0.1 $2.5M 1.2M 2.06
Medtronic SHS (MDT) 0.1 $2.4M 31k 78.23
Teva Pharmaceutical Inds Sponsored Ads (TEVA) 0.1 $2.0M 59k 33.88
Dianthus Therapeutics (DNTH) 0.1 $2.0M 20k 97.48
Sagimet Biosciences Com Ser A (SGMT) 0.1 $1.9M 250k 7.73
Capricor Therapeutics Com New (CAPR) 0.1 $1.8M 74k 24.08
Lenz Therapeutics (LENZ) 0.1 $1.5M 258k 5.68
Altimmune Com New (ALT) 0.1 $1.4M 472k 3.04
Kailera Therapeutics Common Stock 0.1 $1.4M 65k 22.03
Surgery Partners (SGRY) 0.1 $1.4M 84k 16.80
Axsome Therapeutics (AXSM) 0.1 $1.3M 5.5k 244.77
Oruka Therapeutics (ORKA) 0.1 $1.1M 12k 95.17
Viking Therapeutics (VKTX) 0.0 $995k 26k 39.01
Legend Biotech Corp Sponsored Ads (LEGN) 0.0 $968k 34k 28.88
Glaukos (GKOS) 0.0 $664k 4.8k 139.76
Jasper Therapeutics Com New (JSPR) 0.0 $463k 1.1M 0.42
BioCryst Pharmaceuticals (BCRX) 0.0 $221k 22k 10.00
Moonlake Immunotherapeutics Class A Ord (MLTX) 0.0 $208k 11k 19.47