Rock Springs Capital Management

Latest statistics and disclosures from Rock Springs Capital Management's latest quarterly 13F-HR filing:

Companies in the Rock Springs Capital Management portfolio as of March 2019 quarter

Company (Ticker) Portfolio Weight Share Count Change in Shares Price
UnitedHealth (UNH) 5.63 591000 -2% 247.26
Gw Pharmaceuticals Plc ads 4.55 700000 +16% 168.57
Amarin Corporation (AMRN) 3.62 4.53M 20.76
Intuitive Surgical (ISRG) 3.35 152500 570.58
WellCare Health Plans (WCG) 3.33 320000 -17% 269.75
Neurocrine Biosciences (NBIX) 2.87 844500 +7% 88.10
Spark Therapeutics 2.36 537500 113.88
HCA HOLDINGS Inc 2.29 455000 130.38
Pacira Pharmaceuticals, Inc. 1.83 1.25M 38.06
Encompass Health Corp 1.80 800000 +10% 58.40
Ultragenyx Pharmaceutical 1.55 580000 +36% 69.36
Sarepta Therapeutics 1.54 334500 +2% 119.19
Teleflex Incorporated (TFX) 1.51 130000 302.16
Vertex Pharmaceuticals Incorporated (VRTX) 1.44 203000 183.95
Boston Scientific Corporation (BSX) 1.44 970000 +6% 38.38
Irhythm Technologies Inc Com Added 1.44 499615 +3% 74.96
Stryker Corporation (SYK) 1.36 179000 197.52
Edwards Lifesciences (EW) 1.35 183500 191.33
EXACT Sciences Corporation (EXAS) 1.33 397000 +3% 86.62
Penumbra 1.28 225000 147.01
Alexion Pharmaceuticals (ALXN) 1.26 242500 135.18
Madrigal Pharmaceuticals 1.23 255250 +5% 125.26
Portola Pharmaceuticals 1.17 875000 +191% 34.70
Align Technology (ALGN) 1.15 105000 284.33
Molina Healthcare (MOH) 1.14 207500 -39% 141.96
Wright Medical Group Nv 1.12 920608 -7% 31.45
Beigene 1.09 214800 132.00
Acadia Healthcare 1.05 925000 +2% 29.31
Incyte Corporation (INCY) 1.04 312300 86.01
IDEXX Laboratories (IDXX) 1.04 120200 +8% 223.60
Invitae 1.04 1.15M -17% 23.42
Pra Health Sciences 1.02 240000 +20% 110.29
Ascendis Pharma A S 0.97 213500 -12% 117.70
Insmed Inc 0.95 850000 29.07
Baxter International (BAX) 0.94 300700 81.31
Collegium Pharmaceutical Inc Common Stock Usd 0.92 1.58M 15.14
Radius Health 0.90 1.18M +6% 19.94
Biogen Idec (BIIB) 0.89 97500 +95% 236.38
Argenx Se 0.87 181700 +2% 124.84
Thermo Fisher Scientific (TMO) 0.85 81000 -15% 273.72
Blueprint Medicines 0.85 275000 +28% 80.05
Alnylam Pharmaceuticals (ALNY) 0.84 233500 +20% 93.45
Epizyme 0.84 1.75M +9% 12.39
Alder Biopharmaceuticals 0.82 1.56M +5% 13.65
Covetrus Inc 0.80 650000 NEW 31.85
Medicines Company (MDCO) 0.79 729400 27.95
Audentes Therapeutics Inc Com stock 0.79 522500 +4% 39.02
Galapagos Nv-spon 0.75 165000 -7% 117.78
Retrophin 0.72 830000 +107% 22.63
Ra Pharmaceuticals 0.69 804000 +7% 22.40
Seattle Genetics (SGEN) 0.68 242000 +19% 73.24
Puma Biotechnology Inc Common Stock 0.68 458000 38.79
Celgene Corporation (CELG) 0.67 185150 94.34
Fibrogen 0.64 306000 54.35
Allakos Inc. 0.63 404000 40.50
Immunomedics (IMMU) 0.59 800000 +2% 19.21
Intersect Ent 0.58 465000 32.15
Agilent Technologies Inc C ommon 0.57 182800 80.38
Sage Therapeutics 0.57 92500 +88% 159.05
Cigna Corp New 0.56 90000 NEW 160.82
Obseva Sa 0.55 1.12M 12.79
West Pharmaceutical Services (WST) 0.53 125000 -21% 110.20
Guardant Health Inc 0.53 180000 -16% 76.70
Amicus Therapeutics (FOLD) 0.52 1000000 13.60
Biohaven Pharmaceutical Holding 0.52 260000 51.47
Mirati Therapeutics 0.51 180000 +20% 73.30
Zogenix 0.50 235000 55.01
Global Blood Therapeutics In 0.50 245000 52.93
Axogen 0.49 603970 21.06
Theravance Biopharma 0.48 550000 22.67
Anaptysbio Inc Common 0.48 170000 +25% 73.05
Zai Lab Ltd adr added 0.47 413400 +18% 29.51
BioMarin Pharmaceutical (BMRN) 0.46 135000 +4% 88.83
RTI Biologics (RTIX) 0.45 1.95M 6.01
Rigel Pharmaceuticals (RIGL) 0.42 4.20M 2.57
Phasebio Pharmaceuticals Inc 0.42 1.14M +36% 9.51
Dermira 0.40 775000 +49% 13.55
Homology Medicines Inc 0.40 370000 -17% 27.73
Translate Bio Inc 0.40 1.01M 10.19
Aclaris Therapeutics 0.39 1.70M +27% 5.99
Freshpet 0.38 235000 42.29
Odonate Therapeutics Ord 0.38 445000 22.11
Cymabay Therapeutics 0.37 715000 +16% 13.28
Axonics Modulation Technolog 0.37 400000 23.95
Novocure Ltd ord shs 0.36 195000 48.17
Coherus Biosciences 0.35 670000 13.64
Assembly Biosciences 0.34 450000 19.69
Heron Therapeutics 0.33 350000 -33% 24.44
Inflarx Nv 0.33 225000 +3% 37.79
Myovant Sciences 0.32 347500 23.87
Achillion Pharmaceuticals (ACHN) 0.31 2.70M +16% 2.96
Agios Pharmaceuticals 0.31 117500 NEW 67.44
Mersana Therapeutics 0.28 1.40M +40% 5.26
Clementia 0.28 275000 26.10
Bluebird Bio 0.27 45000 157.33
Five Prime Therapeutics 0.26 505000 13.40
Spero Therapeutics Inc 0.26 525000 12.81
Aeglea Biotherapeutics 0.25 800000 +23% 8.05
Global China Cord Blood Corp shs 0.25 925000 7.02
Clovis Oncology 0.24 256000 24.82
Rhythm Pharmaceuticals Inc 0.23 216500 27.41
Insmed Inc convertible security 0.23 6.00M 1.01
BioCryst Pharmaceuticals (BCRX) 0.22 700000 8.14
Momenta Pharmaceuticals (MNTA) 0.22 400000 14.53
Ardelyx 0.22 2.00M 2.80
Anthem 0.22 20000 NEW 287.00
Macrogenics 0.21 300000 +270% 17.98
Alder Biopharmaceuticals Inc convertible security 0.19 5.00M 0.96
Compugen Ltd 0.18 1.10M 4.14
Medicines Company 2.750000 07/15/2023 bond 0.16 5.00M 0.85
Nabriva Therapeutics 0.15 1.60M 2.44
Correvio Pharma Corp 0.15 1.20M 3.16
Adaptimmune Therapeutics 0.13 800000 +6% 4.30
Chiasma 0.13 650000 +23% 5.20
Medicines Company conv 0.12 3.00M 1.00
Dynavax Technologies 0.11 380000 7.31
Restorbio Inc 0.11 400000 6.82
Paratek Pharmaceuticals 0.09 450000 5.36
Arvinas Ord 0.09 150000 14.76
Nevro 0.08 34700 NEW 62.51
Novavax (NVAX) 0.07 3.25M 0.55
La Jolla Pharmaceuticl Com Par 0.07 277236 6.43
Corvus Pharmaceuticals 0.06 400000 4.02
Theravance Biopharma Inc note 3.250%11/0 0.06 1.50M 0.97
Kaleido Biosciences Ord 0.06 100050 NEW 14.50
Radius Health Inc note 3.000% 9/0 0.05 1.50M 0.83
Neurocrine Biosciences Inc Note 2.250 5/1 0.05 1000000 1.35
Pacira Pharmaceuticals Inc convertible security 0.04 1000000 0.99
Dermira Inc note 3.000% 5/1 0.03 1000000 0.89
Proteostasis Therapeutics In 0.02 400000 1.26
Solid Biosciences 0.02 60000 9.20

Past 13F-HR SEC Filings by Rock Springs Capital Management

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