Rock Springs Capital Management

Rock Springs Capital Management as of March 31, 2019

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 131 positions in its portfolio as reported in the March 2019 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
UnitedHealth (UNH) 5.6 $146M 591k 247.26
Gw Pharmaceuticals Plc ads 4.5 $118M 700k 168.57
Amarin Corporation (AMRN) 3.6 $94M 4.5M 20.76
Intuitive Surgical (ISRG) 3.4 $87M 153k 570.58
WellCare Health Plans 3.3 $86M 320k 269.75
Neurocrine Biosciences (NBIX) 2.9 $74M 845k 88.10
Spark Therapeutics 2.4 $61M 538k 113.88
Hca Holdings (HCA) 2.3 $59M 455k 130.38
Pacira Pharmaceuticals (PCRX) 1.8 $48M 1.3M 38.06
Encompass Health Corp (EHC) 1.8 $47M 800k 58.40
Ultragenyx Pharmaceutical (RARE) 1.6 $40M 580k 69.36
Sarepta Therapeutics (SRPT) 1.5 $40M 335k 119.19
Teleflex Incorporated (TFX) 1.5 $39M 130k 302.16
Vertex Pharmaceuticals Incorporated (VRTX) 1.4 $37M 203k 183.95
Boston Scientific Corporation (BSX) 1.4 $37M 970k 38.38
Irhythm Technologies (IRTC) 1.4 $38M 500k 74.96
Stryker Corporation (SYK) 1.4 $35M 179k 197.52
Edwards Lifesciences (EW) 1.4 $35M 184k 191.33
EXACT Sciences Corporation (EXAS) 1.3 $34M 397k 86.62
Penumbra (PEN) 1.3 $33M 225k 147.01
Alexion Pharmaceuticals 1.3 $33M 243k 135.18
Madrigal Pharmaceuticals (MDGL) 1.2 $32M 255k 125.26
Portola Pharmaceuticals 1.2 $30M 875k 34.70
Align Technology (ALGN) 1.1 $30M 105k 284.33
Molina Healthcare (MOH) 1.1 $30M 208k 141.96
Wright Medical Group Nv 1.1 $29M 921k 31.45
Beigene (BGNE) 1.1 $28M 215k 132.00
Acadia Healthcare (ACHC) 1.1 $27M 925k 29.31
Incyte Corporation (INCY) 1.0 $27M 312k 86.01
IDEXX Laboratories (IDXX) 1.0 $27M 120k 223.60
Invitae (NVTAQ) 1.0 $27M 1.2M 23.42
Pra Health Sciences 1.0 $27M 240k 110.29
Ascendis Pharma A S (ASND) 1.0 $25M 214k 117.70
Insmed (INSM) 0.9 $25M 850k 29.07
Baxter International (BAX) 0.9 $24M 301k 81.31
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 0.9 $24M 1.6M 15.14
Radius Health 0.9 $23M 1.2M 19.94
Biogen Idec (BIIB) 0.9 $23M 98k 236.38
Argenx Se (ARGX) 0.9 $23M 182k 124.84
Thermo Fisher Scientific (TMO) 0.8 $22M 81k 273.72
Blueprint Medicines (BPMC) 0.8 $22M 275k 80.05
Alnylam Pharmaceuticals (ALNY) 0.8 $22M 234k 93.45
Epizyme 0.8 $22M 1.8M 12.39
Alder Biopharmaceuticals 0.8 $21M 1.6M 13.65
Covetrus 0.8 $21M 650k 31.85
Medicines Company 0.8 $20M 729k 27.95
Audentes Therapeutics 0.8 $20M 523k 39.02
Galapagos Nv- (GLPG) 0.8 $19M 165k 117.78
Retrophin 0.7 $19M 830k 22.63
Ra Pharmaceuticals 0.7 $18M 804k 22.40
Seattle Genetics 0.7 $18M 242k 73.24
Puma Biotechnology (PBYI) 0.7 $18M 458k 38.79
Celgene Corporation 0.7 $18M 185k 94.34
Fibrogen (FGEN) 0.6 $17M 306k 54.35
Allakos (ALLK) 0.6 $16M 404k 40.50
Immunomedics 0.6 $15M 800k 19.21
Intersect Ent 0.6 $15M 465k 32.15
Agilent Technologies Inc C ommon (A) 0.6 $15M 183k 80.38
Sage Therapeutics (SAGE) 0.6 $15M 93k 159.05
Cigna Corp (CI) 0.6 $15M 90k 160.82
Obseva Sa 0.6 $14M 1.1M 12.79
West Pharmaceutical Services (WST) 0.5 $14M 125k 110.20
Guardant Health (GH) 0.5 $14M 180k 76.70
Amicus Therapeutics (FOLD) 0.5 $14M 1.0M 13.60
Biohaven Pharmaceutical Holding 0.5 $13M 260k 51.47
Mirati Therapeutics 0.5 $13M 180k 73.30
Zogenix 0.5 $13M 235k 55.01
Global Blood Therapeutics In 0.5 $13M 245k 52.93
Axogen (AXGN) 0.5 $13M 604k 21.06
Theravance Biopharma (TBPH) 0.5 $13M 550k 22.67
Anaptysbio Inc Common (ANAB) 0.5 $12M 170k 73.05
Zai Lab (ZLAB) 0.5 $12M 413k 29.51
BioMarin Pharmaceutical (BMRN) 0.5 $12M 135k 88.83
RTI Biologics 0.5 $12M 2.0M 6.01
Rigel Pharmaceuticals 0.4 $11M 4.2M 2.57
Phasebio Pharmaceuticals 0.4 $11M 1.1M 9.51
Dermira 0.4 $11M 775k 13.55
Homology Medicines 0.4 $10M 370k 27.73
Translate Bio 0.4 $10M 1.0M 10.19
Aclaris Therapeutics (ACRS) 0.4 $10M 1.7M 5.99
Freshpet (FRPT) 0.4 $9.9M 235k 42.29
Odonate Therapeutics Ord 0.4 $9.8M 445k 22.11
Cymabay Therapeutics 0.4 $9.5M 715k 13.28
Axonics Modulation Technolog (AXNX) 0.4 $9.6M 400k 23.95
Novocure Ltd ord (NVCR) 0.4 $9.4M 195k 48.17
Coherus Biosciences (CHRS) 0.3 $9.1M 670k 13.64
Assembly Biosciences 0.3 $8.9M 450k 19.69
Heron Therapeutics (HRTX) 0.3 $8.6M 350k 24.44
Inflarx Nv (IFRX) 0.3 $8.5M 225k 37.79
Myovant Sciences 0.3 $8.3M 348k 23.87
Achillion Pharmaceuticals 0.3 $8.0M 2.7M 2.96
Agios Pharmaceuticals (AGIO) 0.3 $7.9M 118k 67.44
Mersana Therapeutics (MRSN) 0.3 $7.4M 1.4M 5.26
Clementia 0.3 $7.2M 275k 26.10
Bluebird Bio (BLUE) 0.3 $7.1M 45k 157.33
Five Prime Therapeutics 0.3 $6.8M 505k 13.40
Spero Therapeutics (SPRO) 0.3 $6.7M 525k 12.81
Aeglea Biotherapeutics 0.2 $6.4M 800k 8.05
Global China Cord Blood Corp (CORBF) 0.2 $6.5M 925k 7.02
Clovis Oncology 0.2 $6.4M 256k 24.82
Rhythm Pharmaceuticals (RYTM) 0.2 $5.9M 217k 27.41
Insmed Inc convertible security 0.2 $6.1M 6.0M 1.01
BioCryst Pharmaceuticals (BCRX) 0.2 $5.7M 700k 8.14
Momenta Pharmaceuticals 0.2 $5.8M 400k 14.53
Ardelyx (ARDX) 0.2 $5.6M 2.0M 2.80
Anthem (ELV) 0.2 $5.7M 20k 287.00
Macrogenics (MGNX) 0.2 $5.4M 300k 17.98
Alder Biopharmaceuticals Inc convertible security 0.2 $4.8M 5.0M 0.96
Compugen (CGEN) 0.2 $4.6M 1.1M 4.14
Medicines Company 2.750000 07/15/2023 bond 0.2 $4.3M 5.0M 0.85
Nabriva Therapeutics 0.1 $3.9M 1.6M 2.44
Correvio Pharma Corp 0.1 $3.8M 1.2M 3.16
Adaptimmune Therapeutics (ADAP) 0.1 $3.4M 800k 4.30
Chiasma 0.1 $3.4M 650k 5.20
Medicines Company conv 0.1 $3.0M 3.0M 1.00
Dynavax Technologies (DVAX) 0.1 $2.8M 380k 7.31
Restorbio 0.1 $2.7M 400k 6.82
Paratek Pharmaceuticals 0.1 $2.4M 450k 5.36
Arvinas Ord (ARVN) 0.1 $2.2M 150k 14.76
Nevro (NVRO) 0.1 $2.2M 35k 62.51
Novavax 0.1 $1.8M 3.3M 0.55
La Jolla Pharmaceuticl Com Par 0.1 $1.8M 277k 6.43
Corvus Pharmaceuticals (CRVS) 0.1 $1.6M 400k 4.02
Theravance Biopharma Inc note 3.250%11/0 0.1 $1.5M 1.5M 0.97
Kaleido Biosciences Ord (KLDO) 0.1 $1.5M 100k 14.50
Radius Health Inc note 3.000% 9/0 0.1 $1.2M 1.5M 0.83
Neurocrine Biosciences Inc Note 2.250 5/1 0.1 $1.4M 1.0M 1.35
Pacira Pharmaceuticals Inc convertible security 0.0 $990k 1.0M 0.99
Dermira Inc note 3.000% 5/1 0.0 $890k 1.0M 0.89
Proteostasis Therapeutics In 0.0 $504k 400k 1.26
Solid Biosciences 0.0 $552k 60k 9.20