Rock Springs Capital Management

Rock Springs Capital Management as of Dec. 31, 2016

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 133 positions in its portfolio as reported in the December 2016 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Tesaro 5.5 $83M 614k 134.48
Alexion Pharmaceuticals 3.8 $57M 465k 122.35
Aetna 3.7 $55M 441k 124.01
Merck & Co (MRK) 3.0 $44M 750k 58.87
Gw Pharmaceuticals Plc ads 2.7 $40M 356k 111.75
Acadia Healthcare (ACHC) 2.6 $38M 1.2M 33.10
Allergan 2.3 $35M 166k 210.01
Radius Health 2.3 $35M 910k 38.03
CIGNA Corporation 2.2 $34M 252k 133.39
WellCare Health Plans 2.1 $32M 235k 137.08
Spark Therapeutics 2.1 $31M 625k 49.90
Intuitive Surgical (ISRG) 2.0 $30M 48k 634.17
Aclaris Therapeutics (ACRS) 2.0 $30M 1.1M 27.14
Ardelyx (ARDX) 1.9 $28M 2.0M 14.20
Celgene Corporation 1.9 $28M 243k 115.75
UnitedHealth (UNH) 1.8 $26M 165k 160.04
Bristol Myers Squibb (BMY) 1.8 $26M 450k 58.44
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 1.7 $25M 1.6M 15.57
Advanced Accelerat spon ads each rep 2 ord 1.7 $25M 930k 26.76
Eli Lilly & Co. (LLY) 1.6 $24M 325k 73.55
Medicines Company 1.6 $24M 700k 33.94
Shire 1.6 $23M 137k 170.38
Pacira Pharmaceuticals (PCRX) 1.5 $23M 713k 32.30
Gilead Sciences (GILD) 1.3 $20M 277k 71.61
Theravance Biopharma (TBPH) 1.3 $19M 600k 31.88
Penumbra (PEN) 1.3 $19M 296k 63.80
Incyte Corporation (INCY) 1.1 $17M 169k 100.27
Pra Health Sciences 1.1 $17M 300k 55.12
Neurocrine Biosciences (NBIX) 1.1 $16M 410k 38.70
Amarin Corporation (AMRN) 1.0 $15M 5.0M 3.08
Wright Medical Group Nv 1.0 $15M 667k 22.98
Prothena (PRTA) 1.0 $15M 310k 49.19
Amgen (AMGN) 0.9 $14M 97k 146.21
Coherus Biosciences (CHRS) 0.9 $14M 485k 28.15
Jazz Pharmaceuticals (JAZZ) 0.9 $14M 124k 109.03
Galapagos Nv- (GLPG) 0.9 $14M 210k 64.19
Willis Towers Watson (WTW) 0.9 $14M 110k 122.28
Biogen Idec (BIIB) 0.9 $13M 47k 283.57
Walgreen Boots Alliance (WBA) 0.9 $13M 161k 82.76
Ra Pharmaceuticals 0.8 $13M 826k 15.19
Danaher Corporation (DHR) 0.8 $13M 160k 77.84
Patheon N V 0.8 $12M 400k 28.71
Edwards Lifesciences (EW) 0.8 $11M 121k 93.70
Ultragenyx Pharmaceutical (RARE) 0.8 $11M 160k 70.31
Dermira 0.7 $11M 363k 30.33
Healthsouth 0.7 $11M 265k 41.24
Hologic (HOLX) 0.7 $11M 265k 40.12
BioMarin Pharmaceutical (BMRN) 0.7 $10M 125k 82.84
Therapeuticsmd 0.7 $9.9M 1.7M 5.77
Retrophin 0.7 $9.9M 522k 18.93
Invitae (NVTAQ) 0.6 $9.5M 1.2M 7.94
Envision Healthcare 0.6 $9.2M 145k 63.29
Audentes Therapeutics 0.6 $8.9M 485k 18.27
Merus N V (MRUS) 0.6 $8.4M 400k 21.11
Clearside Biomedical (CLSD) 0.6 $8.4M 935k 8.94
Five Prime Therapeutics 0.6 $8.2M 164k 50.11
Paratek Pharmaceuticals 0.5 $8.1M 526k 15.40
Beigene (BGNE) 0.5 $8.0M 265k 30.36
Regeneron Pharmaceuticals (REGN) 0.5 $7.2M 20k 367.08
Ligand Pharmaceuticals In (LGND) 0.5 $7.1M 70k 101.61
Alkermes (ALKS) 0.5 $6.9M 125k 55.58
Epizyme 0.5 $6.9M 570k 12.10
Avexis 0.5 $6.7M 140k 47.73
Egalet Corporation note 5.50% 4/1/20 0.5 $6.8M 7.8M 0.87
Vertex Pharmaceuticals Incorporated (VRTX) 0.4 $6.6M 90k 73.67
athenahealth 0.4 $6.6M 63k 105.16
Ascendis Pharma A S (ASND) 0.4 $6.6M 325k 20.24
Corvus Pharmaceuticals (CRVS) 0.4 $6.4M 450k 14.30
Insmed (INSM) 0.4 $6.2M 468k 13.23
RTI Biologics 0.4 $6.0M 1.9M 3.25
EXACT Sciences Corporation (EXAS) 0.4 $6.0M 451k 13.36
Aimmune Therapeutics 0.4 $6.0M 293k 20.45
Achillion Pharmaceuticals 0.4 $5.7M 1.4M 4.13
Proteostasis Therapeutics In 0.4 $5.5M 450k 12.26
CHINA CORD Blood Corp 0.4 $5.4M 880k 6.12
Sarepta Therapeutics (SRPT) 0.3 $5.3M 192k 27.43
Fibrogen (FGEN) 0.3 $5.1M 240k 21.40
Clovis Oncology 0.3 $4.9M 110k 44.42
Medpace Hldgs (MEDP) 0.3 $4.9M 135k 36.07
Assembly Biosciences 0.3 $4.7M 390k 12.15
Aduro Biotech 0.3 $4.7M 415k 11.40
Macrogenics (MGNX) 0.3 $4.6M 225k 20.44
Steris 0.3 $4.4M 65k 67.38
Compugen (CGEN) 0.3 $4.2M 825k 5.10
Intersect Ent 0.3 $4.2M 345k 12.10
Novadaq Technologies 0.3 $3.9M 555k 7.09
Allergan Plc pfd conv ser a 0.3 $3.8M 5.0k 764.00
Amicus Therapeutics (FOLD) 0.2 $3.8M 758k 4.97
Alder Biopharmaceuticals 0.2 $3.8M 182k 20.80
Juno Therapeutics 0.2 $3.7M 197k 18.85
Kite Pharma 0.2 $3.5M 79k 44.84
Innoviva (INVA) 0.2 $3.6M 337k 10.70
Medicines Company conv 0.2 $3.6M 3.0M 1.20
Cardiome Pharma 0.2 $3.3M 1.2M 2.76
Otonomy 0.2 $3.3M 210k 15.90
Ariad Pharmaceuticals 0.2 $3.1M 250k 12.44
Cidara Therapeutics Inc Common Stock Usd 0.0001 0.2 $3.1M 300k 10.40
Nabriva Therapeutics 0.2 $3.1M 525k 5.95
Puma Biotechnology (PBYI) 0.2 $2.9M 95k 30.70
Tetraphase Pharmaceuticals 0.2 $2.8M 698k 4.03
Intra Cellular Therapies (ITCI) 0.2 $2.9M 190k 15.09
Hill-Rom Holdings 0.2 $2.7M 48k 56.15
Adaptimmune Therapeutics (ADAP) 0.2 $2.7M 675k 4.05
Exelixis (EXEL) 0.2 $2.6M 175k 14.91
Dbv Technologies S A 0.2 $2.6M 73k 35.12
Madrigal Pharmaceuticals (MDGL) 0.2 $2.6M 175k 14.90
Rigel Pharmaceuticals 0.2 $2.4M 1.0M 2.38
Scynexis 0.2 $2.4M 760k 3.19
Zimmer Holdings (ZBH) 0.1 $2.2M 21k 103.22
Egalet 0.1 $2.3M 300k 7.65
Seres Therapeutics (MCRB) 0.1 $2.2M 220k 9.90
Aeglea Biotherapeutics 0.1 $2.3M 524k 4.35
Healthequity (HQY) 0.1 $2.0M 50k 40.52
Genocea Biosciences 0.1 $2.0M 480k 4.12
Bluebird Bio (BLUE) 0.1 $1.8M 29k 61.68
Novocure Ltd ord (NVCR) 0.1 $1.7M 214k 7.85
Theravance Biopharma Inc note 3.250%11/0 0.1 $1.7M 1.5M 1.14
Tandem Diabetes Care 0.1 $1.3M 595k 2.15
Global Blood Therapeutics In 0.1 $1.4M 97k 14.45
Dimension Therapeutics 0.1 $1.2M 271k 4.35
Novavax 0.1 $1.0M 820k 1.26
Valeant Pharmaceuticals Int 0.1 $1.0M 71k 14.52
Atyr Pharma Inc Common Stock Usd 0.001 0.1 $1.0M 475k 2.15
Nivalis Therapeutics 0.1 $1.1M 489k 2.24
Wright Med Group Inc note 2.000% 2/1 0.1 $1.1M 1.0M 1.05
Myovant Sciences 0.1 $1.1M 90k 12.44
Chiasma 0.1 $960k 493k 1.95
Perrigo Company (PRGO) 0.1 $774k 9.3k 83.23
Dynavax Technologies (DVAX) 0.0 $652k 165k 3.95
Cerulean Pharma 0.0 $444k 625k 0.71
Infinity Pharmaceuticals (INFIQ) 0.0 $365k 270k 1.35
Anthera Pharmaceutcls 0.0 $247k 380k 0.65
Orexigen Therapeutics 0.0 $288k 165k 1.74