Rock Springs Capital Management

Rock Springs Capital Management as of Dec. 31, 2018

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 133 positions in its portfolio as reported in the December 2018 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
UnitedHealth (UNH) 7.1 $150M 603k 249.12
WellCare Health Plans 4.3 $92M 390k 236.09
Intuitive Surgical (ISRG) 3.4 $73M 152k 478.92
Amarin Corporation (AMRN) 2.9 $61M 4.5M 13.61
Gw Pharmaceuticals Plc ads 2.8 $58M 600k 97.39
Hca Holdings (HCA) 2.7 $57M 455k 124.45
Neurocrine Biosciences (NBIX) 2.7 $56M 789k 71.41
Pacira Pharmaceuticals (PCRX) 2.5 $54M 1.3M 43.02
Tesaro 2.1 $45M 602k 74.25
Encompass Health Corp (EHC) 2.1 $45M 725k 61.70
Molina Healthcare (MOH) 1.9 $40M 342k 116.22
Sarepta Therapeutics (SRPT) 1.7 $36M 327k 109.13
Loxo Oncology 1.6 $34M 242k 140.07
Vertex Pharmaceuticals Incorporated (VRTX) 1.6 $34M 203k 165.71
Teleflex Incorporated (TFX) 1.6 $34M 130k 258.48
Irhythm Technologies (IRTC) 1.6 $34M 482k 69.48
Boston Scientific Corporation (BSX) 1.5 $32M 915k 35.34
Beigene (BGNE) 1.4 $30M 215k 140.26
Edwards Lifesciences (EW) 1.3 $28M 184k 153.17
Stryker Corporation (SYK) 1.3 $28M 179k 156.75
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 1.3 $28M 1.6M 17.17
Penumbra (PEN) 1.3 $28M 225k 122.20
Wright Medical Group Nv 1.3 $27M 1.0M 27.22
Madrigal Pharmaceuticals (MDGL) 1.3 $27M 241k 112.72
EXACT Sciences Corporation (EXAS) 1.1 $24M 385k 63.10
Alexion Pharmaceuticals 1.1 $24M 243k 97.36
Acadia Healthcare (ACHC) 1.1 $23M 901k 25.71
Align Technology (ALGN) 1.0 $22M 105k 209.43
Thermo Fisher Scientific (TMO) 1.0 $22M 96k 223.79
Allakos (ALLK) 1.0 $21M 404k 52.27
Spark Therapeutics 1.0 $21M 538k 39.14
IDEXX Laboratories (IDXX) 1.0 $21M 111k 186.02
Baxter International (BAX) 0.9 $20M 301k 65.82
Incyte Corporation (INCY) 0.9 $20M 310k 63.59
Ultragenyx Pharmaceutical (RARE) 0.9 $19M 425k 43.48
Pra Health Sciences 0.9 $18M 200k 91.96
Radius Health 0.9 $18M 1.1M 16.49
Argenx Se (ARGX) 0.8 $17M 178k 96.07
Galapagos Nv- (GLPG) 0.8 $16M 178k 91.74
West Pharmaceutical Services (WST) 0.7 $16M 160k 98.03
Invitae (NVTA) 0.7 $16M 1.4M 11.06
Ascendis Pharma A S (ASND) 0.7 $15M 244k 62.65
Biogen Idec (BIIB) 0.7 $15M 50k 300.92
Alder Biopharmaceuticals 0.7 $15M 1.5M 10.25
Inogen (INGN) 0.7 $15M 117k 124.17
Alnylam Pharmaceuticals (ALNY) 0.7 $14M 194k 72.91
Fibrogen (FGEN) 0.7 $14M 306k 46.28
Obseva Sa 0.7 $14M 1.1M 12.66
Medicines Company 0.7 $14M 727k 19.14
Theravance Biopharma (TBPH) 0.7 $14M 550k 25.59
Heron Therapeutics (HRTX) 0.6 $14M 525k 25.94
Ra Pharmaceuticals 0.6 $14M 750k 18.20
Intersect Ent 0.6 $13M 465k 28.18
Agilent Technologies Inc C ommon (A) 0.6 $12M 183k 67.46
Zimmer Holdings (ZBH) 0.6 $12M 118k 103.72
Exelixis (EXEL) 0.6 $12M 621k 19.67
Axogen (AXGN) 0.6 $12M 604k 20.43
Celgene Corporation 0.6 $12M 185k 64.09
Seattle Genetics 0.5 $12M 203k 56.66
Blueprint Medicines (BPMC) 0.5 $12M 214k 53.91
Immunomedics 0.5 $11M 780k 14.27
Insmed (INSM) 0.5 $11M 850k 13.12
BioMarin Pharmaceutical (BMRN) 0.5 $11M 129k 85.15
DaVita (DVA) 0.5 $11M 215k 51.46
Audentes Therapeutics 0.5 $11M 500k 21.32
Assembly Biosciences (ASMB) 0.5 $10M 450k 22.62
Epizyme 0.5 $9.9M 1.6M 6.16
Global Blood Therapeutics In 0.5 $10M 245k 41.05
Homology Medicines (FIXX) 0.5 $10M 450k 22.36
Rigel Pharmaceuticals (RIGL) 0.5 $9.7M 4.2M 2.30
Aclaris Therapeutics (ACRS) 0.5 $9.8M 1.3M 7.39
Amicus Therapeutics (FOLD) 0.5 $9.6M 1.0M 9.58
Biohaven Pharmaceutical Holding 0.5 $9.6M 260k 36.98
Puma Biotechnology (PBYI) 0.4 $9.3M 457k 20.35
Retrophin 0.4 $9.1M 400k 22.63
Anaptysbio Inc Common (ANAB) 0.4 $8.7M 136k 63.79
Zogenix 0.4 $8.6M 235k 36.46
Zai Lab (ZLAB) 0.4 $8.1M 350k 23.22
Guardant Health (GH) 0.4 $8.1M 216k 37.59
Inflarx Nv (IFRX) 0.4 $7.9M 218k 36.37
Freshpet (FRPT) 0.4 $7.6M 235k 32.16
Translate Bio 0.4 $7.6M 1.0M 7.50
RTI Biologics 0.3 $7.2M 2.0M 3.70
Novocure Ltd ord (NVCR) 0.3 $6.5M 195k 33.48
Mirati Therapeutics (MRTX) 0.3 $6.4M 150k 42.42
Odonate Therapeutics Ord 0.3 $6.3M 445k 14.08
Coherus Biosciences (CHRS) 0.3 $6.1M 670k 9.05
Axonics Modulation Technolog (AXNX) 0.3 $6.0M 400k 15.11
Novavax 0.3 $6.0M 3.3M 1.84
Portola Pharmaceuticals 0.3 $5.9M 300k 19.52
Global China Cord Blood Corp (CORBF) 0.3 $6.0M 925k 6.45
BioCryst Pharmaceuticals (BCRX) 0.3 $5.6M 700k 8.07
Myovant Sciences 0.3 $5.7M 348k 16.41
Rhythm Pharmaceuticals (RYTM) 0.3 $5.8M 217k 26.88
Aptinyx 0.2 $5.0M 305k 16.54
Cymabay Therapeutics (CBAY) 0.2 $4.8M 614k 7.87
Aeglea Biotherapeutics 0.2 $4.9M 650k 7.49
Clovis Oncology 0.2 $4.6M 256k 17.96
Five Prime Therapeutics 0.2 $4.7M 505k 9.30
Sage Therapeutics (SAGE) 0.2 $4.7M 49k 95.80
Momenta Pharmaceuticals 0.2 $4.4M 400k 11.04
Bluebird Bio (BLUE) 0.2 $4.5M 45k 99.20
Adaptimmune Therapeutics (ADAP) 0.2 $4.3M 750k 5.75
Insmed Inc convertible security 0.2 $4.3M 6.0M 0.72
Mersana Therapeutics (MRSN) 0.2 $4.1M 1.0M 4.08
Alder Biopharmaceuticals Inc convertible security 0.2 $4.0M 5.0M 0.80
Dermira 0.2 $3.7M 517k 7.19
Medicines Company 2.750000 07/15/2023 bond 0.2 $3.8M 5.0M 0.76
Achillion Pharmaceuticals 0.2 $3.7M 2.3M 1.59
Ardelyx (ARDX) 0.2 $3.6M 2.0M 1.79
Dynavax Technologies (DVAX) 0.2 $3.5M 380k 9.15
Restorbio 0.2 $3.4M 400k 8.62
Clementia 0.1 $3.2M 275k 11.76
Spero Therapeutics (SPRO) 0.1 $3.2M 525k 6.15
Correvio Pharma Corp 0.1 $3.0M 1.2M 2.49
La Jolla Pharmaceuticl Com Par 0.1 $2.6M 277k 9.43
Medicines Company conv 0.1 $2.6M 3.0M 0.86
Phasebio Pharmaceuticals (PHASQ) 0.1 $2.6M 835k 3.09
Compugen (CGEN) 0.1 $2.4M 1.1M 2.17
Paratek Pharmaceuticals 0.1 $2.3M 450k 5.13
Nabriva Therapeutics 0.1 $2.3M 1.6M 1.46
G1 Therapeutics (GTHX) 0.1 $1.9M 100k 19.15
Arvinas Ord (ARVN) 0.1 $1.9M 150k 12.85
Chiasma 0.1 $1.6M 525k 3.11
Corvus Pharmaceuticals (CRVS) 0.1 $1.5M 400k 3.67
Theravance Biopharma Inc note 3.250%11/0 0.1 $1.5M 1.5M 1.03
Solid Biosciences 0.1 $1.6M 59k 26.80
Proteostasis Therapeutics In 0.1 $1.3M 400k 3.24
Neurocrine Biosciences Inc Note 2.250 5/1 0.1 $1.2M 1.0M 1.20
Macrogenics (MGNX) 0.1 $1.0M 81k 12.69
Radius Health Inc note 3.000% 9/0 0.1 $1.2M 1.5M 0.77
Pacira Pharmaceuticals Inc convertible security 0.1 $990k 1.0M 0.99
Dermira Inc note 3.000% 5/1 0.0 $780k 1.0M 0.78