Rock Springs Capital Management

Rock Springs Capital Management as of Dec. 31, 2017

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 144 positions in its portfolio as reported in the December 2017 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
UnitedHealth (UNH) 4.9 $107M 487k 220.46
Advanced Accelerat spon ads each rep 2 ord 3.1 $67M 826k 81.62
CIGNA Corporation 3.0 $65M 321k 203.09
Alexion Pharmaceuticals 2.6 $57M 480k 119.59
Intuitive Surgical (ISRG) 2.4 $53M 144k 364.94
Pacira Pharmaceuticals (PCRX) 2.3 $51M 1.1M 45.65
Merck & Co (MRK) 2.2 $48M 851k 56.27
Gw Pharmaceuticals Plc ads 2.1 $47M 354k 132.01
Tesaro 2.1 $46M 549k 82.87
Molina Healthcare (MOH) 2.0 $44M 567k 76.68
Pra Health Sciences 2.0 $44M 478k 91.07
Aetna 2.0 $43M 239k 180.39
Acadia Healthcare (ACHC) 1.9 $41M 1.3M 32.63
Neurocrine Biosciences (NBIX) 1.7 $38M 486k 77.59
Puma Biotechnology (PBYI) 1.7 $37M 374k 98.85
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 1.6 $35M 1.9M 18.46
Celgene Corporation 1.4 $32M 303k 104.36
Spark Therapeutics 1.4 $32M 615k 51.42
Madrigal Pharmaceuticals (MDGL) 1.4 $31M 342k 91.79
Radius Health 1.4 $30M 943k 31.77
Penumbra (PEN) 1.3 $29M 311k 94.10
Johnson & Johnson (JNJ) 1.3 $28M 200k 139.72
WellCare Health Plans 1.2 $27M 134k 201.11
Loxo Oncology 1.2 $26M 310k 84.18
Beigene (BGNE) 1.2 $26M 266k 97.72
Vertex Pharmaceuticals Incorporated (VRTX) 1.2 $26M 171k 149.86
Teleflex Incorporated (TFX) 1.0 $23M 92k 248.82
EXACT Sciences Corporation (EXAS) 1.0 $23M 435k 52.54
Irhythm Technologies (IRTC) 1.0 $23M 406k 56.05
Gilead Sciences (GILD) 1.0 $23M 313k 71.64
Mersana Therapeutics (MRSN) 1.0 $22M 1.3M 16.43
Edwards Lifesciences (EW) 1.0 $21M 190k 112.71
Thermo Fisher Scientific (TMO) 0.9 $21M 110k 189.88
Assembly Biosciences 0.9 $20M 450k 45.25
Stryker Corporation (SYK) 0.9 $20M 127k 154.84
Avexis 0.9 $19M 175k 110.67
Insmed (INSM) 0.9 $19M 614k 31.18
Medicines Company 0.9 $19M 690k 27.34
Willis Towers Watson (WTW) 0.8 $19M 123k 150.69
Theravance Biopharma (TBPH) 0.8 $18M 653k 27.89
Galapagos Nv- (GLPG) 0.8 $17M 185k 93.76
Incyte Corporation (INCY) 0.8 $17M 183k 94.71
Biogen Idec (BIIB) 0.8 $17M 53k 318.57
Jazz Pharmaceuticals (JAZZ) 0.8 $17M 124k 134.65
Alnylam Pharmaceuticals (ALNY) 0.8 $17M 130k 127.05
Epizyme 0.8 $17M 1.3M 12.55
Audentes Therapeutics 0.7 $16M 525k 31.25
Amarin Corporation (AMRN) 0.7 $16M 4.0M 4.01
Portola Pharmaceuticals 0.7 $16M 324k 48.68
Clovis Oncology 0.7 $16M 232k 68.00
Wright Medical Group Nv 0.7 $16M 700k 22.20
Fibrogen (FGEN) 0.7 $15M 325k 47.40
Ardelyx (ARDX) 0.7 $15M 2.3M 6.60
Baxter International (BAX) 0.7 $15M 230k 64.64
Align Technology (ALGN) 0.7 $15M 67k 222.19
Hologic (HOLX) 0.7 $14M 335k 42.75
Zimmer Holdings (ZBH) 0.7 $14M 119k 120.67
Sarepta Therapeutics (SRPT) 0.7 $14M 258k 55.64
Anaptysbio Inc Common (ANAB) 0.7 $14M 142k 100.72
Axogen (AXGN) 0.6 $14M 478k 28.30
Healthsouth 0.6 $13M 265k 49.41
Amicus Therapeutics (FOLD) 0.6 $13M 910k 14.39
Prothena (PRTA) 0.6 $13M 335k 37.49
Alder Biopharmaceuticals 0.6 $12M 1.1M 11.45
Invitae (NVTAQ) 0.5 $12M 1.3M 9.08
Dermira 0.5 $12M 420k 27.81
BioMarin Pharmaceutical (BMRN) 0.5 $11M 125k 89.17
Intersect Ent 0.5 $11M 345k 32.40
Ascendis Pharma A S (ASND) 0.5 $11M 280k 40.06
Blueprint Medicines (BPMC) 0.5 $11M 147k 75.41
Aimmune Therapeutics 0.5 $11M 293k 37.82
Juno Therapeutics 0.5 $11M 230k 45.71
Odonate Therapeutics Ord 0.5 $10M 410k 25.00
Aclaris Therapeutics (ACRS) 0.5 $10M 415k 24.66
Rigel Pharmaceuticals (RIGL) 0.4 $9.6M 2.5M 3.88
Inogen (INGN) 0.4 $9.5M 80k 119.08
Five Prime Therapeutics 0.4 $9.3M 425k 21.92
Healthequity (HQY) 0.4 $9.1M 195k 46.66
Zogenix 0.4 $9.0M 226k 40.05
CHINA CORD Blood Corp 0.4 $8.8M 880k 9.95
Retrophin 0.4 $8.4M 400k 21.07
Almost Family 0.4 $8.2M 148k 55.35
Paratek Pharmaceuticals 0.4 $8.1M 450k 17.90
Obseva Sa 0.4 $8.2M 840k 9.76
RTI Biologics 0.4 $8.0M 2.0M 4.10
Bluebird Bio (BLUE) 0.4 $8.0M 45k 178.11
Ultragenyx Pharmaceutical (RARE) 0.3 $7.6M 163k 46.38
Sage Therapeutics (SAGE) 0.3 $7.4M 45k 164.71
Arena Pharmaceuticals 0.3 $7.3M 215k 33.97
Therapeuticsmd 0.3 $7.1M 1.2M 6.04
Seattle Genetics 0.3 $6.7M 125k 53.50
Clearside Biomedical (CLSD) 0.3 $6.5M 935k 7.00
Biohaven Pharmaceutical Holding 0.3 $6.6M 244k 26.98
Clementia 0.3 $6.5M 345k 18.98
Achillion Pharmaceuticals 0.3 $6.5M 2.3M 2.88
Steris 0.3 $6.5M 74k 87.47
Zai Lab (ZLAB) 0.3 $6.3M 295k 21.23
Spero Therapeutics (SPRO) 0.3 $6.2M 525k 11.75
Ablynx Nv 0.3 $6.2M 250k 24.99
Tetraphase Pharmaceuticals 0.3 $6.0M 950k 6.30
Adaptimmune Therapeutics (ADAP) 0.3 $5.8M 875k 6.68
Global Blood Therapeutics In 0.3 $5.9M 150k 39.35
DaVita (DVA) 0.3 $5.8M 80k 72.25
Coherus Biosciences (CHRS) 0.2 $5.5M 630k 8.80
Exelixis (EXEL) 0.2 $5.3M 175k 30.40
Merus N V (MRUS) 0.2 $5.3M 272k 19.40
Ra Pharmaceuticals 0.2 $5.1M 600k 8.50
Heron Therapeutics (HRTX) 0.2 $4.5M 250k 18.10
Medicines Company 2.750000 07/15/2023 bond 0.2 $4.6M 5.0M 0.92
Corvus Pharmaceuticals (CRVS) 0.2 $4.4M 423k 10.36
Macrogenics (MGNX) 0.2 $4.3M 225k 19.00
Cymabay Therapeutics 0.2 $4.1M 450k 9.20
G1 Therapeutics (GTHX) 0.2 $4.3M 215k 19.84
BioCryst Pharmaceuticals (BCRX) 0.2 $4.0M 813k 4.91
Proteostasis Therapeutics In 0.2 $3.9M 675k 5.83
Egalet Corporation note 5.50% 4/1/20 0.2 $3.7M 7.8M 0.48
Myovant Sciences 0.2 $3.7M 295k 12.64
Nabriva Therapeutics 0.2 $3.7M 625k 5.98
Ironwood Pharmaceuticals (IRWD) 0.1 $3.4M 225k 14.99
Mirati Therapeutics 0.1 $3.3M 180k 18.25
Dynavax Technologies (DVAX) 0.1 $3.3M 175k 18.70
Bristol Myers Squibb (BMY) 0.1 $3.1M 50k 61.28
Aduro Biotech 0.1 $3.1M 415k 7.50
Medicines Company conv 0.1 $3.2M 3.0M 1.06
Allergan Plc pfd conv ser a 0.1 $2.9M 5.0k 586.80
Aeglea Biotherapeutics 0.1 $2.8M 524k 5.41
Intra Cellular Therapies (ITCI) 0.1 $2.7M 188k 14.48
Novavax 0.1 $2.5M 2.0M 1.24
Seres Therapeutics (MCRB) 0.1 $2.2M 220k 10.14
Compugen (CGEN) 0.1 $2.1M 825k 2.50
Cidara Therapeutics Inc Common Stock Usd 0.0001 (CDTX) 0.1 $2.0M 300k 6.80
Rhythm Pharmaceuticals (RYTM) 0.1 $2.1M 72k 29.06
Cardiome Pharma 0.1 $1.9M 1.2M 1.55
Scynexis 0.1 $1.8M 760k 2.32
Dbv Technologies S A (DBVT) 0.1 $1.8M 73k 24.60
Atyr Pharma Inc Common Stock Usd 0.001 0.1 $1.7M 475k 3.50
Alpine Immune Sciences (ALPN) 0.1 $1.7M 150k 11.20
Theravance Biopharma Inc note 3.250%11/0 0.1 $1.7M 1.5M 1.10
Radius Health Inc note 3.000% 9/0 0.1 $1.4M 1.5M 0.95
Wright Med Group Inc note 2.000% 2/1 0.1 $1.0M 1.0M 1.03
Chiasma 0.0 $893k 525k 1.70
Infinity Pharmaceuticals (INFIQ) 0.0 $548k 270k 2.03
Orexigen Therapeutics 0.0 $213k 165k 1.29
Dare Bioscience (DARE) 0.0 $135k 63k 2.16