Rock Springs Capital Management

Rock Springs Capital Management as of Dec. 31, 2015

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 119 positions in its portfolio as reported in the December 2015 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Allergan 3.8 $51M 162k 312.50
Aetna 3.4 $44M 411k 108.12
Acadia Healthcare (ACHC) 3.2 $42M 675k 62.46
Alexion Pharmaceuticals 2.8 $37M 193k 190.75
Radius Health 2.8 $37M 598k 61.54
Gilead Sciences (GILD) 2.5 $33M 325k 101.19
Baxalta Incorporated 2.4 $32M 810k 39.03
Pfizer (PFE) 2.4 $32M 975k 32.28
Hca Holdings (HCA) 2.2 $29M 430k 67.63
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 2.1 $28M 1.0M 27.50
Celgene Corporation 2.1 $28M 230k 119.76
Spark Therapeutics 1.9 $25M 560k 45.31
Advanced Accelerat spon ads each rep 2 ord 1.9 $25M 800k 31.27
Teva Pharmaceutical Industries (TEVA) 1.9 $25M 379k 65.64
Aclaris Therapeutics (ACRS) 1.8 $24M 896k 26.94
Medicines Company 1.8 $23M 625k 37.34
Eli Lilly & Co. (LLY) 1.8 $23M 276k 84.26
Intuitive Surgical (ISRG) 1.6 $22M 40k 546.15
Neurocrine Biosciences (NBIX) 1.6 $21M 378k 56.57
Pacira Pharmaceuticals (PCRX) 1.5 $20M 260k 76.79
CIGNA Corporation 1.4 $18M 122k 146.33
Tesaro 1.3 $18M 334k 52.32
Prothena (PRTA) 1.3 $17M 248k 68.11
Anthem (ELV) 1.3 $17M 121k 139.44
WellCare Health Plans 1.3 $17M 215k 78.21
Biogen Idec (BIIB) 1.2 $16M 51k 306.36
McKesson Corporation (MCK) 1.1 $14M 73k 197.23
Thermo Fisher Scientific (TMO) 1.1 $14M 100k 141.85
Mednax (MD) 1.1 $14M 193k 71.66
Incyte Corporation (INCY) 1.0 $14M 127k 108.45
Amgen (AMGN) 1.0 $13M 81k 162.32
Galapagos Nv- (GLPG) 1.0 $13M 210k 62.88
Retrophin 1.0 $13M 675k 19.29
Ardelyx (ARDX) 0.9 $12M 683k 18.12
Therapeuticsmd 0.9 $12M 1.2M 10.37
Achillion Pharmaceuticals 0.9 $12M 1.1M 10.79
Ultragenyx Pharmaceutical (RARE) 0.9 $12M 106k 112.18
Aduro Biotech 0.9 $12M 415k 28.14
Pra Health Sciences 0.9 $12M 253k 45.27
Jazz Pharmaceuticals (JAZZ) 0.9 $11M 80k 140.56
Penumbra (PEN) 0.8 $11M 205k 53.81
Wright Medical Group Nv 0.8 $11M 456k 24.18
Theravance Biopharma (TBPH) 0.8 $11M 645k 16.39
Dermira 0.8 $10M 290k 34.61
Cardiome Pharma 0.7 $9.7M 1.2M 8.11
Insys Therapeutics 0.7 $9.7M 339k 28.63
Intra Cellular Therapies (ITCI) 0.7 $9.7M 180k 53.79
Chiasma 0.7 $9.5M 488k 19.57
IDEXX Laboratories (IDXX) 0.7 $9.3M 128k 72.92
Adaptimmune Therapeutics (ADAP) 0.7 $9.2M 765k 12.06
Vertex Pharmaceuticals Incorporated (VRTX) 0.7 $9.2M 73k 125.83
Anacor Pharmaceuticals In 0.7 $8.7M 77k 112.97
Juno Therapeutics 0.7 $8.7M 197k 43.97
Seres Therapeutics (MCRB) 0.7 $8.6M 245k 35.09
Valeant Pharmaceuticals Int 0.6 $8.5M 84k 101.65
Portola Pharmaceuticals 0.6 $8.5M 165k 51.45
HeartWare International 0.6 $8.1M 161k 50.40
Gw Pharmaceuticals Plc ads 0.6 $8.1M 116k 69.44
Inovalon Holdings Inc Cl A 0.6 $8.1M 477k 17.00
Insmed (INSM) 0.6 $7.8M 433k 18.15
Intersect Ent 0.6 $7.6M 337k 22.50
BioMarin Pharmaceutical (BMRN) 0.6 $7.3M 70k 104.76
RTI Biologics 0.6 $7.4M 1.9M 3.97
Relypsa 0.5 $7.1M 252k 28.34
Novadaq Technologies 0.5 $6.9M 540k 12.74
Healthsouth 0.5 $6.8M 195k 34.81
Macrogenics (MGNX) 0.5 $6.8M 218k 30.97
Tandem Diabetes Care 0.5 $6.6M 563k 11.81
Novavax 0.5 $6.5M 770k 8.39
Coherus Biosciences (CHRS) 0.5 $6.5M 282k 22.96
athenahealth 0.5 $6.4M 40k 160.96
Envision Healthcare Hlds 0.5 $6.4M 245k 25.97
Sarepta Therapeutics (SRPT) 0.5 $6.2M 161k 38.58
XenoPort 0.5 $6.0M 1.1M 5.49
Regeneron Pharmaceuticals (REGN) 0.5 $6.0M 11k 542.91
Cooper Companies 0.5 $5.9M 44k 134.20
Epizyme 0.5 $5.9M 370k 16.02
Fibrogen (FGEN) 0.4 $5.8M 190k 30.47
Amicus Therapeutics (FOLD) 0.4 $5.5M 567k 9.70
CHINA CORD Blood Corp 0.4 $5.6M 880k 6.37
Five Prime Therapeutics 0.4 $5.6M 135k 41.50
Otonomy 0.4 $5.5M 198k 27.75
Compugen (CGEN) 0.4 $5.1M 805k 6.39
Abbvie (ABBV) 0.4 $5.2M 88k 59.25
Invitae (NVTAQ) 0.4 $5.1M 623k 8.21
Allergan Plc pfd conv ser a 0.4 $5.1M 5.0k 1027.20
Kite Pharma 0.4 $4.9M 80k 61.62
Ascendis Pharma A S (ASND) 0.4 $4.9M 270k 18.32
Endochoice Hldgs 0.4 $4.9M 590k 8.35
Aimmune Therapeutics 0.4 $4.8M 260k 18.45
Novocure Ltd ord (NVCR) 0.4 $4.8M 214k 22.36
Dyax 0.3 $4.7M 124k 37.62
Clovis Oncology 0.3 $4.4M 125k 35.00
Perrigo Company (PRGO) 0.3 $4.3M 30k 144.70
Cidara Therapeutics Inc Common Stock Usd 0.0001 0.3 $4.3M 250k 17.16
Atyr Pharma Inc Common Stock Usd 0.001 0.3 $4.1M 415k 9.83
Scynexis 0.3 $3.9M 635k 6.21
Nivalis Therapeutics 0.3 $3.8M 489k 7.74
Dynavax Technologies (DVAX) 0.3 $3.6M 150k 24.16
Rigel Pharmaceuticals 0.2 $3.3M 1.1M 3.03
Egalet 0.2 $3.3M 300k 11.02
Dimension Therapeutics 0.2 $3.1M 271k 11.28
Orexigen Therapeutics 0.2 $2.8M 1.7M 1.72
Assembly Biosciences 0.2 $2.8M 371k 7.51
Genocea Biosciences 0.2 $2.5M 480k 5.27
Intercept Pharmaceuticals In 0.2 $2.3M 16k 149.35
Global Blood Therapeutics In 0.2 $2.3M 71k 32.33
Nabriva Therapeutics 0.2 $2.2M 235k 9.55
Tetraphase Pharmaceuticals 0.1 $2.0M 200k 10.03
Infinity Pharmaceuticals (INFIQ) 0.1 $1.7M 215k 7.85
Anthera Pharmaceutcls 0.1 $1.8M 380k 4.64
Cerulean Pharma 0.1 $1.8M 625k 2.80
Bluebird Bio (BLUE) 0.1 $1.3M 20k 64.20
Sophiris Bio 0.1 $1.1M 629k 1.81
Puma Biotechnology (PBYI) 0.1 $862k 11k 78.36
Dbv Technologies S A 0.1 $908k 25k 36.32
Mirna Therapeutics 0.1 $938k 150k 6.25
Paratek Pharmaceuticals 0.0 $585k 31k 18.98
Aratana Therapeutics 0.0 $242k 43k 5.57