Rock Springs Capital Management

Rock Springs Capital Management as of March 31, 2016

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 127 positions in its portfolio as reported in the March 2016 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Aetna 3.9 $46M 411k 112.35
Allergan 3.8 $46M 171k 268.03
Acadia Healthcare (ACHC) 3.5 $41M 750k 55.11
Hca Holdings (HCA) 2.8 $34M 430k 78.05
Baxalta Incorporated 2.7 $33M 810k 40.40
Alexion Pharmaceuticals 2.7 $32M 228k 139.22
Pfizer (PFE) 2.6 $31M 1.0M 29.64
Gilead Sciences (GILD) 2.5 $30M 330k 91.86
Advanced Accelerat spon ads each rep 2 ord 2.4 $29M 833k 35.02
Radius Health 2.1 $25M 809k 31.44
Intuitive Surgical (ISRG) 2.1 $25M 42k 601.05
Celgene Corporation 2.0 $24M 240k 100.09
WellCare Health Plans 1.8 $21M 230k 92.75
Teva Pharmaceutical Industries (TEVA) 1.8 $21M 395k 53.51
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 1.7 $21M 1.1M 18.15
Medicines Company 1.7 $20M 632k 31.77
Eli Lilly & Co. (LLY) 1.7 $20M 276k 72.01
Pacira Pharmaceuticals (PCRX) 1.4 $17M 327k 52.98
Spark Therapeutics 1.4 $17M 581k 29.51
Aclaris Therapeutics (ACRS) 1.4 $17M 896k 18.95
Anthem (ELV) 1.4 $17M 121k 138.99
CIGNA Corporation 1.4 $17M 122k 137.24
Tesaro 1.4 $17M 380k 44.03
Neurocrine Biosciences (NBIX) 1.3 $16M 405k 39.55
Thermo Fisher Scientific (TMO) 1.2 $14M 100k 141.59
Amgen (AMGN) 1.2 $14M 94k 149.93
Biogen Idec (BIIB) 1.2 $14M 53k 260.32
Mednax (MD) 1.1 $13M 195k 64.62
Prothena (PRTA) 1.1 $13M 308k 41.16
McKesson Corporation (MCK) 1.0 $12M 78k 157.25
Theravance Biopharma (TBPH) 1.0 $12M 651k 18.80
Jazz Pharmaceuticals (JAZZ) 0.9 $11M 86k 130.55
Bristol Myers Squibb (BMY) 0.9 $11M 170k 63.88
Pra Health Sciences 0.9 $11M 253k 42.76
Gw Pharmaceuticals Plc ads 0.9 $11M 147k 72.15
Penumbra (PEN) 0.9 $11M 229k 46.00
Walgreen Boots Alliance (WBA) 0.9 $10M 124k 84.24
Therapeuticsmd 0.8 $10M 1.6M 6.40
Incyte Corporation (INCY) 0.8 $9.5M 131k 72.47
Achillion Pharmaceuticals 0.8 $9.4M 1.2M 7.72
Anacor Pharmaceuticals In 0.8 $9.5M 178k 53.45
Galapagos Nv- (GLPG) 0.7 $8.8M 210k 41.82
BioMarin Pharmaceutical (BMRN) 0.7 $8.5M 103k 82.48
Ardelyx (ARDX) 0.7 $8.2M 1.1M 7.77
Wright Medical Group Nv 0.7 $8.1M 490k 16.60
Healthsouth 0.7 $7.8M 208k 37.63
Inovalon Holdings Inc Cl A 0.7 $7.9M 427k 18.52
Invitae (NVTAQ) 0.6 $7.7M 753k 10.23
Ultragenyx Pharmaceutical (RARE) 0.6 $7.5M 119k 63.31
Juno Therapeutics 0.6 $7.5M 197k 38.09
RTI Biologics 0.6 $7.4M 1.9M 4.00
Cooper Companies 0.6 $7.3M 48k 153.97
Epizyme 0.6 $7.1M 589k 12.12
Retrophin 0.6 $7.1M 521k 13.66
Seres Therapeutics (MCRB) 0.6 $7.0M 262k 26.56
Vertex Pharmaceuticals Incorporated (VRTX) 0.6 $6.7M 84k 79.49
Edwards Lifesciences (EW) 0.6 $6.7M 76k 88.21
Alkermes (ALKS) 0.6 $6.6M 195k 34.19
Corvus Pharmaceuticals (CRVS) 0.6 $6.6M 457k 14.50
Beigene (BGNE) 0.6 $6.6M 225k 29.31
Intersect Ent 0.5 $6.5M 340k 19.00
athenahealth 0.5 $6.3M 46k 138.78
Novadaq Technologies 0.5 $6.2M 555k 11.09
Adaptimmune Therapeutics (ADAP) 0.5 $6.2M 765k 8.13
HeartWare International 0.5 $6.1M 193k 31.42
Regeneron Pharmaceuticals (REGN) 0.5 $5.9M 17k 360.42
Coherus Biosciences (CHRS) 0.5 $6.0M 282k 21.23
Dermira 0.5 $6.0M 290k 20.68
Insys Therapeutics 0.5 $5.8M 366k 15.99
Five Prime Therapeutics 0.5 $5.9M 145k 40.63
Insmed (INSM) 0.5 $5.7M 450k 12.67
CHINA CORD Blood Corp 0.5 $5.3M 880k 6.07
Envision Healthcare Hlds 0.5 $5.4M 266k 20.40
Aduro Biotech 0.5 $5.3M 415k 12.81
Intra Cellular Therapies (ITCI) 0.4 $5.2M 188k 27.80
Amicus Therapeutics (FOLD) 0.4 $5.2M 614k 8.45
XenoPort 0.4 $5.0M 1.1M 4.51
Ascendis Pharma A S (ASND) 0.4 $5.0M 270k 18.55
Cardiome Pharma 0.4 $4.9M 1.2M 4.09
Tandem Diabetes Care 0.4 $4.9M 563k 8.71
Compugen (CGEN) 0.4 $4.6M 820k 5.58
Allergan Plc pfd conv ser a 0.4 $4.6M 5.0k 917.00
Chiasma 0.4 $4.5M 493k 9.16
Proteostasis Therapeutics In 0.4 $4.5M 470k 9.64
Novavax 0.4 $4.4M 853k 5.16
Portola Pharmaceuticals 0.4 $4.3M 210k 20.40
Fibrogen (FGEN) 0.4 $4.3M 204k 21.29
Macrogenics (MGNX) 0.3 $4.2M 225k 18.75
Aimmune Therapeutics 0.3 $4.0M 293k 13.56
Avexis 0.3 $3.9M 143k 27.24
Perrigo Company (PRGO) 0.3 $3.8M 30k 127.93
Genocea Biosciences 0.3 $3.7M 480k 7.74
Kite Pharma 0.3 $3.7M 80k 45.91
Otonomy 0.3 $3.6M 240k 14.92
Nabriva Therapeutics 0.3 $3.4M 380k 8.96
Medicines Company conv 0.3 $3.4M 3.0M 1.14
Paratek Pharmaceuticals 0.3 $3.4M 223k 15.17
Dynavax Technologies (DVAX) 0.3 $3.2M 165k 19.24
Cidara Therapeutics Inc Common Stock Usd 0.0001 0.3 $3.2M 250k 12.70
Rigel Pharmaceuticals 0.3 $3.0M 1.5M 2.08
Endochoice Hldgs 0.3 $3.1M 590k 5.21
Novocure Ltd ord (NVCR) 0.3 $3.1M 214k 14.48
Auris Med Hldg 0.2 $2.9M 788k 3.64
Sarepta Therapeutics (SRPT) 0.2 $2.6M 131k 19.52
Scynexis 0.2 $2.6M 635k 4.03
Clovis Oncology 0.2 $2.4M 125k 19.20
Alder Biopharmaceuticals 0.2 $2.4M 98k 24.49
Dbv Technologies S A 0.2 $2.4M 73k 32.55
Valeant Pharmaceuticals Int 0.2 $2.2M 86k 26.30
Ophthotech 0.2 $2.2M 52k 42.27
Dimension Therapeutics 0.2 $2.1M 271k 7.83
Egalet 0.2 $2.1M 300k 6.86
Nivalis Therapeutics 0.2 $2.0M 489k 4.17
Tetraphase Pharmaceuticals 0.2 $1.9M 400k 4.63
Assembly Biosciences 0.2 $2.0M 390k 5.02
Anthera Pharmaceutcls 0.1 $1.6M 450k 3.62
Cerulean Pharma 0.1 $1.7M 625k 2.71
Atyr Pharma Inc Common Stock Usd 0.001 0.1 $1.7M 434k 3.94
Infinity Pharmaceuticals (INFIQ) 0.1 $1.4M 270k 5.27
Intercept Pharmaceuticals In 0.1 $1.3M 10k 128.50
Global Blood Therapeutics In 0.1 $1.2M 78k 15.86
Orexigen Therapeutics 0.1 $926k 1.7M 0.56
Puma Biotechnology (PBYI) 0.1 $925k 32k 29.37
Sophiris Bio 0.1 $905k 629k 1.44
Wright Med Group Inc note 2.000% 2/1 0.1 $900k 1.0M 0.90
Bluebird Bio (BLUE) 0.1 $850k 20k 42.50
Mirna Therapeutics 0.1 $656k 150k 4.37