Rock Springs Capital Management

Rock Springs Capital Management as of March 31, 2017

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 140 positions in its portfolio as reported in the March 2017 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Tesaro 4.2 $73M 475k 153.87
Acadia Healthcare (ACHC) 3.2 $56M 1.3M 43.60
Alexion Pharmaceuticals 3.2 $55M 457k 121.24
Merck & Co (MRK) 2.8 $48M 750k 63.54
Pacira Pharmaceuticals (PCRX) 2.6 $46M 1.0M 45.60
Gw Pharmaceuticals Plc ads 2.5 $43M 357k 120.94
Allergan 2.3 $40M 166k 238.92
CIGNA Corporation 2.3 $40M 270k 146.49
Intuitive Surgical (ISRG) 2.1 $37M 48k 766.48
Radius Health 2.0 $35M 910k 38.65
Medicines Company 2.0 $34M 700k 48.90
Advanced Accelerat spon ads each rep 2 ord 1.9 $34M 850k 39.86
Spark Therapeutics 1.9 $33M 625k 53.34
WellCare Health Plans 1.9 $33M 235k 140.21
Celgene Corporation 1.7 $30M 243k 124.43
Pra Health Sciences 1.7 $30M 458k 65.23
Aetna 1.6 $28M 220k 127.55
Eli Lilly & Co. (LLY) 1.6 $27M 325k 84.11
Humana (HUM) 1.6 $27M 133k 206.14
UnitedHealth (UNH) 1.6 $27M 165k 164.01
Penumbra (PEN) 1.5 $26M 311k 83.45
Ardelyx (ARDX) 1.5 $25M 2.0M 12.65
Bristol Myers Squibb (BMY) 1.4 $25M 453k 54.38
Shire 1.4 $24M 139k 174.23
Incyte Corporation (INCY) 1.3 $23M 169k 133.67
Theravance Biopharma (TBPH) 1.3 $22M 600k 36.82
Johnson & Johnson (JNJ) 1.3 $22M 175k 124.55
Wright Medical Group Nv 1.2 $21M 670k 31.12
Aclaris Therapeutics (ACRS) 1.2 $20M 675k 29.82
Gilead Sciences (GILD) 1.1 $20M 287k 67.92
Jazz Pharmaceuticals (JAZZ) 1.0 $18M 124k 145.13
Galapagos Nv- (GLPG) 1.0 $18M 210k 86.19
Neurocrine Biosciences (NBIX) 1.0 $18M 410k 43.30
Prothena (PRTA) 1.0 $17M 310k 55.79
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 1.0 $17M 1.7M 10.06
Ra Pharmaceuticals 1.0 $17M 789k 21.29
Amgen (AMGN) 0.9 $16M 98k 164.07
Amarin Corporation (AMRN) 0.9 $16M 5.0M 3.20
Hologic (HOLX) 0.8 $15M 340k 42.55
Willis Towers Watson (WTW) 0.8 $14M 110k 130.89
Coherus Biosciences (CHRS) 0.8 $14M 675k 21.15
Danaher Corporation (DHR) 0.8 $14M 160k 85.53
Edwards Lifesciences (EW) 0.8 $13M 143k 94.07
Walgreen Boots Alliance (WBA) 0.8 $13M 161k 83.05
Invitae (NVTA) 0.8 $13M 1.2M 11.06
Biogen Idec (BIIB) 0.8 $13M 48k 273.42
Dermira 0.8 $13M 388k 34.11
Clovis Oncology 0.7 $12M 185k 63.67
Therapeuticsmd 0.7 $12M 1.6M 7.20
Healthsouth 0.7 $11M 265k 42.81
BioMarin Pharmaceutical (BMRN) 0.6 $11M 125k 87.78
Almost Family 0.6 $11M 225k 48.60
Ultragenyx Pharmaceutical (RARE) 0.6 $11M 160k 67.78
Avexis 0.6 $11M 140k 76.03
Patheon N V 0.6 $11M 400k 26.34
Paratek Pharmaceuticals 0.6 $10M 526k 19.25
Vertex Pharmaceuticals Incorporated (VRTX) 0.6 $9.9M 91k 109.35
Assembly Biosciences (ASMB) 0.6 $9.9M 390k 25.49
Epizyme 0.6 $9.8M 570k 17.15
Beigene (BGNE) 0.6 $9.7M 265k 36.61
Merus N V (MRUS) 0.5 $9.4M 385k 24.39
Ascendis Pharma A S (ASND) 0.5 $9.1M 325k 28.00
Corvus Pharmaceuticals (CRVS) 0.5 $8.8M 423k 20.77
Envision Healthcare 0.5 $8.9M 145k 61.32
Obseva Sa 0.5 $8.7M 839k 10.41
Audentes Therapeutics 0.5 $8.5M 500k 17.04
Insmed (INSM) 0.5 $8.2M 468k 17.51
EXACT Sciences Corporation (EXAS) 0.5 $8.0M 338k 23.62
Loxo Oncology 0.4 $7.6M 181k 42.08
RTI Biologics 0.4 $7.4M 1.9M 4.00
Retrophin 0.4 $7.4M 400k 18.46
Clearside Biomedical (CLSD) 0.4 $7.4M 935k 7.94
Alkermes (ALKS) 0.4 $7.3M 125k 58.50
athenahealth 0.4 $7.1M 63k 112.69
Tetraphase Pharmaceuticals 0.4 $6.4M 698k 9.19
Aimmune Therapeutics 0.4 $6.4M 293k 21.73
Egalet Corporation note 5.50% 4/1/20 0.4 $6.5M 7.8M 0.83
Achillion Pharmaceuticals 0.4 $6.3M 1.5M 4.21
Nabriva Therapeutics 0.4 $6.3M 525k 12.00
Regeneron Pharmaceuticals (REGN) 0.3 $5.9M 15k 387.48
CHINA CORD Blood Corp 0.3 $5.9M 880k 6.66
Five Prime Therapeutics 0.3 $6.0M 165k 36.15
Intersect Ent 0.3 $5.9M 345k 17.15
Fibrogen (FGEN) 0.3 $5.9M 240k 24.65
Sarepta Therapeutics (SRPT) 0.3 $5.7M 194k 29.60
Global Blood Therapeutics In 0.3 $5.5M 150k 36.85
Amicus Therapeutics (FOLD) 0.3 $5.4M 758k 7.13
Ligand Pharmaceuticals In (LGND) 0.3 $5.3M 50k 105.84
Kite Pharma 0.3 $5.3M 67k 78.49
Adaptimmune Therapeutics (ADAP) 0.3 $4.8M 875k 5.51
Medicines Company conv 0.3 $4.7M 3.0M 1.58
Aduro Biotech 0.3 $4.5M 415k 10.75
Steris 0.3 $4.5M 65k 69.46
Novadaq Technologies 0.2 $4.3M 555k 7.79
Juno Therapeutics 0.2 $4.4M 197k 22.19
Macrogenics (MGNX) 0.2 $4.2M 225k 18.60
Allergan Plc pfd conv ser a 0.2 $4.2M 5.0k 848.40
Aeglea Biotherapeutics 0.2 $3.9M 524k 7.45
Exelixis (EXEL) 0.2 $3.8M 175k 21.67
Alder Biopharmaceuticals 0.2 $3.8M 182k 20.80
Cardiome Pharma 0.2 $3.6M 1.2M 3.01
Compugen (CGEN) 0.2 $3.5M 825k 4.30
Puma Biotechnology (PBYI) 0.2 $3.5M 95k 37.20
Proteostasis Therapeutics In 0.2 $3.5M 450k 7.82
Madrigal Pharmaceuticals (MDGL) 0.2 $3.5M 225k 15.40
Rigel Pharmaceuticals (RIGL) 0.2 $3.3M 1.0M 3.31
Glaukos (GKOS) 0.2 $3.2M 63k 51.30
Innoviva (INVA) 0.2 $3.3M 235k 13.83
Hill-Rom Holdings 0.2 $3.2M 45k 70.60
Intra Cellular Therapies (ITCI) 0.2 $3.1M 190k 16.25
Genocea Biosciences 0.2 $2.9M 480k 6.09
Bluebird Bio (BLUE) 0.2 $2.8M 31k 90.89
Cara Therapeutics (CARA) 0.2 $2.8M 150k 18.39
Zimmer Holdings (ZBH) 0.1 $2.6M 21k 122.13
Otonomy 0.1 $2.6M 210k 12.25
Dbv Technologies S A (DBVT) 0.1 $2.6M 73k 35.22
Seres Therapeutics (MCRB) 0.1 $2.5M 220k 11.27
Cidara Therapeutics Inc Common Stock Usd 0.0001 (CDTX) 0.1 $2.3M 300k 7.80
Neuroderm Ltd F 0.1 $2.2M 84k 26.55
Scynexis 0.1 $2.1M 760k 2.76
Healthequity (HQY) 0.1 $2.1M 50k 42.46
Theravance Biopharma Inc note 3.250%11/0 0.1 $1.9M 1.5M 1.27
Atyr Pharma Inc Common Stock Usd 0.001 0.1 $1.7M 475k 3.50
Nivalis Therapeutics 0.1 $1.8M 600k 2.92
Novocure Ltd ord (NVCR) 0.1 $1.7M 214k 8.10
Myovant Sciences 0.1 $1.8M 150k 11.74
Newlink Genetics Corporation 0.1 $1.6M 67k 24.09
Egalet 0.1 $1.5M 300k 5.10
Wright Med Group Inc note 2.000% 2/1 0.1 $1.2M 1.0M 1.20
Novavax 0.1 $1.0M 820k 1.28
Perrigo Company (PRGO) 0.1 $1.0M 16k 66.41
Dynavax Technologies (DVAX) 0.1 $982k 165k 5.95
Infinity Pharmaceuticals (INFIQ) 0.1 $872k 270k 3.23
Chiasma 0.1 $837k 493k 1.70
Valeant Pharmaceuticals Int 0.0 $732k 66k 11.02
Tandem Diabetes Care 0.0 $714k 595k 1.20
Anthera Pharmaceutcls 0.0 $558k 1.3M 0.43
Cerulean Pharma 0.0 $506k 625k 0.81
Dimension Therapeutics 0.0 $475k 271k 1.75
Orexigen Therapeutics 0.0 $569k 165k 3.44