Rock Springs Capital Management

Rock Springs Capital Management as of Sept. 30, 2016

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 137 positions in its portfolio as reported in the September 2016 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Tesaro 3.9 $63M 627k 100.24
Aetna 3.2 $51M 440k 115.45
Radius Health 3.0 $48M 892k 54.09
Acadia Healthcare (ACHC) 2.9 $46M 925k 49.55
Gw Pharmaceuticals Plc ads 2.7 $43M 325k 132.73
Allergan 2.7 $43M 186k 230.31
Spark Therapeutics 2.4 $38M 625k 60.06
Merck & Co (MRK) 2.3 $37M 588k 62.41
Pfizer (PFE) 2.2 $36M 1.1M 33.87
Advanced Accelerat spon ads each rep 2 ord 2.2 $35M 930k 38.08
Alexion Pharmaceuticals 2.0 $33M 267k 122.54
Intuitive Surgical (ISRG) 2.0 $33M 45k 724.82
Hca Holdings (HCA) 2.0 $33M 430k 75.63
CIGNA Corporation 1.9 $30M 229k 130.32
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 1.9 $30M 1.5M 19.26
WellCare Health Plans 1.7 $28M 235k 117.09
Gilead Sciences (GILD) 1.7 $27M 344k 79.12
Celgene Corporation 1.7 $27M 255k 104.53
Aclaris Therapeutics (ACRS) 1.6 $26M 1.0M 25.61
Shire 1.6 $26M 133k 193.86
Medicines Company 1.6 $26M 681k 37.74
Ardelyx (ARDX) 1.6 $26M 2.0M 12.94
Eli Lilly & Co. (LLY) 1.4 $22M 276k 80.26
Theravance Biopharma (TBPH) 1.4 $22M 600k 36.24
Clearside Biomedical (CLSD) 1.3 $21M 1.2M 17.35
Neurocrine Biosciences (NBIX) 1.3 $21M 410k 50.64
Penumbra (PEN) 1.3 $20M 267k 75.99
Prothena (PRTA) 1.2 $19M 308k 59.97
Biogen Idec (BIIB) 1.1 $18M 58k 313.03
Pacira Pharmaceuticals (PCRX) 1.1 $17M 504k 34.22
Amarin Corporation (AMRN) 1.0 $16M 5.0M 3.19
Amgen (AMGN) 1.0 $16M 94k 166.81
Wright Medical Group Nv 0.9 $15M 613k 24.53
Incyte Corporation (INCY) 0.9 $15M 157k 94.29
Pra Health Sciences 0.9 $14M 253k 56.51
McKesson Corporation (MCK) 0.9 $14M 82k 166.76
Galapagos Nv- (GLPG) 0.8 $14M 210k 64.66
Bristol Myers Squibb (BMY) 0.8 $14M 250k 53.92
Jazz Pharmaceuticals (JAZZ) 0.8 $13M 107k 121.48
Walgreen Boots Alliance (WBA) 0.8 $13M 161k 80.62
Danaher Corporation (DHR) 0.8 $13M 160k 78.39
Edwards Lifesciences (EW) 0.8 $12M 103k 120.56
Coherus Biosciences (CHRS) 0.8 $13M 468k 26.78
Therapeuticsmd 0.8 $12M 1.8M 6.81
Dermira 0.8 $12M 355k 33.82
Patheon N V 0.7 $12M 400k 29.63
Retrophin 0.7 $12M 522k 22.38
BioMarin Pharmaceutical (BMRN) 0.7 $12M 125k 92.52
Healthsouth 0.7 $11M 265k 40.57
Achillion Pharmaceuticals 0.7 $11M 1.3M 8.10
Sarepta Therapeutics (SRPT) 0.7 $11M 173k 61.41
Ultragenyx Pharmaceutical (RARE) 0.7 $10M 147k 70.94
Hologic (HOLX) 0.6 $9.8M 253k 38.83
Five Prime Therapeutics 0.6 $8.7M 166k 52.49
Alkermes (ALKS) 0.5 $8.6M 183k 47.03
Audentes Therapeutics 0.5 $8.6M 485k 17.81
EXACT Sciences Corporation (EXAS) 0.5 $8.1M 435k 18.57
Vertex Pharmaceuticals Incorporated (VRTX) 0.5 $7.8M 90k 87.21
Invitae (NVTAQ) 0.5 $7.8M 890k 8.76
Willis Towers Watson (WTW) 0.5 $7.8M 59k 132.77
Hill-Rom Holdings 0.5 $7.4M 120k 61.98
Insmed (INSM) 0.5 $7.3M 503k 14.52
Corvus Pharmaceuticals (CRVS) 0.5 $7.4M 450k 16.45
Proteostasis Therapeutics In 0.4 $7.0M 450k 15.59
Regeneron Pharmaceuticals (REGN) 0.4 $6.8M 17k 402.00
Ophthotech 0.4 $6.8M 148k 46.13
Beigene (BGNE) 0.4 $6.9M 225k 30.81
Rigel Pharmaceuticals 0.4 $6.6M 1.8M 3.67
Ligand Pharmaceuticals In (LGND) 0.4 $6.6M 65k 102.06
Macrogenics (MGNX) 0.4 $6.7M 225k 29.91
Egalet Corporation note 5.50% 4/1/20 0.4 $6.7M 7.8M 0.86
Envision Healthcare Hlds 0.4 $6.5M 291k 22.27
Paratek Pharmaceuticals 0.4 $6.5M 503k 13.01
Novadaq Technologies 0.4 $6.4M 555k 11.57
Epizyme 0.4 $6.3M 643k 9.84
Merus N V (MRUS) 0.4 $6.4M 383k 16.75
Ascendis Pharma A S (ASND) 0.4 $6.0M 300k 20.10
Alder Biopharmaceuticals 0.4 $6.0M 182k 32.77
Juno Therapeutics 0.4 $5.9M 197k 30.01
athenahealth 0.4 $5.8M 46k 126.12
RTI Biologics 0.4 $5.8M 1.9M 3.13
Endochoice Hldgs 0.4 $5.8M 723k 7.98
Avexis 0.4 $5.8M 140k 41.21
Intersect Ent 0.3 $5.5M 345k 15.84
Compugen (CGEN) 0.3 $5.2M 825k 6.30
Amicus Therapeutics (FOLD) 0.3 $5.1M 695k 7.40
Aduro Biotech 0.3 $5.2M 415k 12.43
Fibrogen (FGEN) 0.3 $4.8M 234k 20.70
Adaptimmune Therapeutics (ADAP) 0.3 $4.8M 675k 7.05
Puma Biotechnology (PBYI) 0.3 $4.7M 70k 67.05
Tandem Diabetes Care 0.3 $4.6M 595k 7.66
CHINA CORD Blood Corp 0.3 $4.5M 880k 5.11
Clovis Oncology 0.3 $4.5M 125k 36.05
Kite Pharma 0.3 $4.4M 79k 55.86
Aimmune Therapeutics 0.3 $4.4M 293k 15.00
BioScrip 0.3 $4.3M 1.5M 2.89
Allergan Plc pfd conv ser a 0.3 $4.1M 5.0k 821.20
Nivalis Therapeutics 0.2 $4.0M 489k 8.13
Medpace Hldgs (MEDP) 0.2 $4.0M 135k 29.86
Cardiome Pharma 0.2 $3.8M 1.2M 3.13
Otonomy 0.2 $3.8M 210k 18.19
Medicines Company conv 0.2 $3.9M 3.0M 1.30
Innoviva (INVA) 0.2 $3.7M 337k 10.99
Perrigo Company (PRGO) 0.2 $3.5M 38k 92.32
Mednax (MD) 0.2 $3.3M 50k 66.26
Aeglea Biotherapeutics 0.2 $3.4M 524k 6.41
Nabriva Therapeutics 0.2 $3.0M 426k 7.05
Intra Cellular Therapies (ITCI) 0.2 $2.9M 190k 15.24
Assembly Biosciences 0.2 $2.8M 390k 7.21
Cidara Therapeutics Inc Common Stock Usd 0.0001 0.2 $2.9M 250k 11.45
Steris 0.2 $2.9M 40k 73.10
Dbv Technologies S A 0.2 $2.7M 73k 36.33
Seres Therapeutics (MCRB) 0.2 $2.7M 220k 12.29
Tetraphase Pharmaceuticals 0.2 $2.5M 663k 3.83
Genocea Biosciences 0.1 $2.5M 480k 5.12
Scynexis 0.1 $2.5M 635k 3.87
AmSurg 0.1 $2.2M 33k 67.05
Egalet 0.1 $2.3M 300k 7.61
Global Blood Therapeutics In 0.1 $2.3M 98k 23.05
Dimension Therapeutics 0.1 $2.2M 271k 7.99
Novavax 0.1 $1.8M 853k 2.08
Valeant Pharmaceuticals Int 0.1 $1.7M 69k 24.55
Dynavax Technologies (DVAX) 0.1 $1.7M 165k 10.49
Novocure Ltd ord (NVCR) 0.1 $1.8M 214k 8.54
Exelixis (EXEL) 0.1 $1.6M 125k 12.79
Anthera Pharmaceutcls 0.1 $1.4M 450k 3.15
Atyr Pharma Inc Common Stock Usd 0.001 0.1 $1.4M 434k 3.18
Chiasma 0.1 $1.4M 493k 2.94
Cerner Corporation 0.1 $1.2M 20k 61.75
Bluebird Bio (BLUE) 0.1 $1.4M 20k 67.80
Insys Therapeutics 0.1 $1.2M 100k 11.79
Wright Med Group Inc note 2.000% 2/1 0.1 $1.1M 1.0M 1.07
Madrigal Pharmaceuticals (MDGL) 0.1 $799k 63k 12.68
Cerulean Pharma 0.0 $656k 625k 1.05
Infinity Pharmaceuticals (INFIQ) 0.0 $421k 270k 1.56
Orexigen Therapeutics 0.0 $549k 165k 3.32
Ariad Pharmaceuticals 0.0 $342k 25k 13.68