Rock Springs Capital Management

Rock Springs Capital Management as of Sept. 30, 2017

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 147 positions in its portfolio as reported in the September 2017 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
UnitedHealth (UNH) 4.2 $90M 459k 195.85
Alexion Pharmaceuticals 3.0 $65M 463k 140.29
Tesaro 3.0 $64M 495k 129.10
Aetna 2.9 $63M 399k 159.01
Acadia Healthcare (ACHC) 2.9 $62M 1.3M 47.76
Spark Therapeutics 2.5 $53M 597k 89.16
Advanced Accelerat spon ads each rep 2 ord 2.5 $53M 785k 67.62
CIGNA Corporation 2.3 $51M 270k 186.94
Intuitive Surgical (ISRG) 2.3 $50M 48k 1045.88
Merck & Co (MRK) 2.2 $49M 758k 64.03
Pacira Pharmaceuticals (PCRX) 1.9 $41M 1.1M 37.55
Puma Biotechnology (PBYI) 1.8 $40M 330k 119.75
Celgene Corporation 1.8 $38M 263k 145.82
Gw Pharmaceuticals Plc ads 1.8 $38M 373k 101.49
Radius Health 1.7 $36M 943k 38.55
Pra Health Sciences 1.7 $36M 478k 76.17
WellCare Health Plans 1.6 $34M 198k 171.74
Molina Healthcare (MOH) 1.3 $29M 423k 68.76
Beigene (BGNE) 1.3 $29M 280k 103.46
Penumbra (PEN) 1.3 $28M 311k 90.30
Neurocrine Biosciences (NBIX) 1.2 $27M 440k 61.28
Loxo Oncology 1.2 $26M 286k 92.12
Epizyme 1.2 $26M 1.4M 19.05
Medicines Company 1.2 $26M 690k 37.04
Gilead Sciences (GILD) 1.2 $25M 313k 81.02
Vertex Pharmaceuticals Incorporated (VRTX) 1.1 $23M 152k 152.04
Mersana Therapeutics (MRSN) 1.1 $23M 1.3M 17.29
Johnson & Johnson (JNJ) 1.1 $23M 175k 130.01
Theravance Biopharma (TBPH) 1.0 $22M 644k 34.24
Galapagos Nv- (GLPG) 1.0 $22M 214k 101.75
Edwards Lifesciences (EW) 1.0 $21M 190k 109.31
Thermo Fisher Scientific (TMO) 1.0 $21M 110k 189.20
EXACT Sciences Corporation (EXAS) 0.9 $21M 437k 47.12
Insmed (INSM) 0.9 $20M 650k 31.21
Incyte Corporation (INCY) 0.9 $20M 173k 116.74
Prothena (PRTA) 0.9 $20M 310k 64.77
Irhythm Technologies (IRTC) 0.9 $20M 386k 51.88
Almost Family 0.9 $19M 362k 53.70
Danaher Corporation (DHR) 0.9 $19M 225k 85.78
Medtronic (MDT) 0.9 $19M 247k 77.77
Clovis Oncology 0.9 $19M 232k 82.40
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 0.9 $19M 1.8M 10.49
C.R. Bard 0.8 $18M 58k 320.50
Jazz Pharmaceuticals (JAZZ) 0.8 $18M 124k 146.25
Willis Towers Watson (WTW) 0.8 $18M 115k 154.23
Portola Pharmaceuticals 0.8 $18M 324k 54.03
Fibrogen (FGEN) 0.8 $18M 325k 53.80
Wright Medical Group Nv 0.8 $17M 670k 25.87
Avexis 0.8 $17M 175k 96.73
Biogen Idec (BIIB) 0.8 $17M 53k 313.11
Audentes Therapeutics 0.7 $15M 525k 28.01
Baxter International (BAX) 0.7 $14M 230k 62.75
Amarin Corporation (AMRN) 0.7 $14M 4.0M 3.50
Amicus Therapeutics (FOLD) 0.6 $14M 910k 15.08
Assembly Biosciences 0.6 $14M 390k 34.92
Healthsouth 0.6 $12M 265k 46.35
Alnylam Pharmaceuticals (ALNY) 0.6 $12M 105k 117.49
Madrigal Pharmaceuticals (MDGL) 0.6 $12M 275k 44.98
Kite Pharma 0.6 $12M 68k 179.81
Invitae (NVTAQ) 0.6 $12M 1.3M 9.37
BioMarin Pharmaceutical (BMRN) 0.5 $12M 125k 93.07
Sarepta Therapeutics (SRPT) 0.5 $12M 259k 45.36
Align Technology (ALGN) 0.5 $11M 61k 186.26
Ardelyx (ARDX) 0.5 $11M 2.0M 5.60
Paratek Pharmaceuticals 0.5 $11M 450k 25.10
Aclaris Therapeutics (ACRS) 0.5 $11M 440k 25.81
Intersect Ent 0.5 $11M 345k 31.15
Dermira 0.5 $11M 400k 27.00
Alder Biopharmaceuticals 0.5 $11M 875k 12.25
Juno Therapeutics 0.5 $10M 225k 44.86
Ascendis Pharma A S (ASND) 0.5 $10M 280k 36.25
Retrophin 0.5 $10M 400k 24.89
CHINA CORD Blood Corp 0.5 $9.8M 880k 11.12
Achillion Pharmaceuticals 0.4 $9.6M 2.1M 4.49
Neuroderm Ltd F 0.4 $9.2M 238k 38.90
Biohaven Pharmaceutical Holding 0.4 $9.1M 244k 37.38
RTI Biologics 0.4 $8.9M 2.0M 4.55
Five Prime Therapeutics 0.4 $8.9M 218k 40.91
Ultragenyx Pharmaceutical (RARE) 0.4 $8.7M 163k 53.26
Ra Pharmaceuticals 0.4 $8.8M 600k 14.60
Therapeuticsmd 0.4 $8.5M 1.6M 5.29
Healthequity (HQY) 0.4 $8.3M 165k 50.58
Coherus Biosciences (CHRS) 0.4 $8.5M 638k 13.35
Zai Lab (ZLAB) 0.4 $8.4M 313k 27.00
Clearside Biomedical (CLSD) 0.4 $8.2M 935k 8.74
Axogen (AXGN) 0.4 $7.7M 400k 19.35
Aimmune Therapeutics 0.3 $7.3M 293k 24.79
Regeneron Pharmaceuticals (REGN) 0.3 $7.2M 16k 447.12
Adaptimmune Therapeutics (ADAP) 0.3 $7.2M 875k 8.19
ACADIA Pharmaceuticals (ACAD) 0.3 $6.9M 182k 37.67
Obseva Sa 0.3 $6.8M 840k 8.14
Seattle Genetics 0.3 $6.8M 125k 54.41
Corvus Pharmaceuticals (CRVS) 0.3 $6.7M 423k 15.94
Tetraphase Pharmaceuticals 0.3 $6.5M 950k 6.84
Steris 0.3 $6.5M 74k 88.41
Blueprint Medicines (BPMC) 0.3 $6.0M 87k 69.66
G1 Therapeutics (GTHX) 0.3 $6.0M 240k 24.89
Clementia 0.3 $5.8M 345k 16.89
Merus N V (MRUS) 0.2 $5.5M 275k 19.87
Arena Pharmaceuticals 0.2 $5.5M 215k 25.50
Anaptysbio Inc Common (ANAB) 0.2 $5.2M 150k 34.95
Medicines Company 2.750000 07/15/2023 bond 0.2 $5.3M 5.0M 1.06
Nabriva Therapeutics 0.2 $5.1M 625k 8.19
Bluebird Bio (BLUE) 0.2 $4.8M 35k 137.34
Global Blood Therapeutics In 0.2 $4.7M 150k 31.05
Myovant Sciences 0.2 $4.6M 295k 15.47
Exelixis (EXEL) 0.2 $4.2M 175k 24.23
Aduro Biotech 0.2 $4.4M 415k 10.65
Macrogenics (MGNX) 0.2 $4.2M 225k 18.48
Egalet Corporation note 5.50% 4/1/20 0.2 $4.1M 7.8M 0.52
Medicines Company conv 0.2 $3.8M 3.0M 1.27
Cymabay Therapeutics 0.2 $3.6M 450k 8.06
Allergan Plc pfd conv ser a 0.2 $3.8M 5.0k 757.80
Dynavax Technologies (DVAX) 0.2 $3.5M 165k 21.50
Seres Therapeutics (MCRB) 0.2 $3.5M 220k 16.04
Zogenix 0.2 $3.5M 100k 35.05
Bristol Myers Squibb (BMY) 0.1 $3.2M 50k 63.74
Ironwood Pharmaceuticals (IRWD) 0.1 $3.2M 200k 15.77
Compugen (CGEN) 0.1 $3.1M 825k 3.80
Intra Cellular Therapies (ITCI) 0.1 $3.0M 188k 15.78
Dbv Technologies S A (DBVT) 0.1 $3.1M 73k 42.44
Rigel Pharmaceuticals (RIGL) 0.1 $2.5M 1.0M 2.54
Cardiome Pharma 0.1 $2.6M 1.2M 2.14
Aeglea Biotherapeutics 0.1 $2.6M 524k 4.93
Zimmer Holdings (ZBH) 0.1 $2.5M 21k 117.11
BioCryst Pharmaceuticals (BCRX) 0.1 $2.4M 450k 5.24
Atyr Pharma Inc Common Stock Usd 0.001 0.1 $2.4M 475k 5.05
Cidara Therapeutics Inc Common Stock Usd 0.0001 (CDTX) 0.1 $2.4M 300k 8.10
Sage Therapeutics (SAGE) 0.1 $2.0M 33k 62.31
Theravance Biopharma Inc note 3.250%11/0 0.1 $1.8M 1.5M 1.23
Scynexis 0.1 $1.8M 760k 2.41
Myokardia 0.1 $1.7M 40k 42.85
Alpine Immune Sciences (ALPN) 0.1 $1.7M 150k 11.60
Radius Health Inc note 3.000% 9/0 0.1 $1.5M 1.5M 1.01
Chiasma 0.1 $1.3M 493k 2.55
Dimension Therapeutics 0.1 $1.4M 225k 6.00
Wright Med Group Inc note 2.000% 2/1 0.1 $1.1M 1.0M 1.09
Novavax 0.0 $935k 820k 1.14
Proteostasis Therapeutics In 0.0 $945k 450k 2.10
Newlink Genetics Corporation 0.0 $738k 73k 10.18
Kala Pharmaceuticals 0.0 $571k 25k 22.84
Infinity Pharmaceuticals (INFIQ) 0.0 $359k 270k 1.33
Tandem Diabetes Care 0.0 $411k 563k 0.73
Egalet 0.0 $384k 300k 1.28
Orexigen Therapeutics 0.0 $350k 165k 2.12
Anthera Pharmaceuticals (ANTH) 0.0 $155k 108k 1.44
Dare Bioscience (DARE) 0.0 $195k 63k 3.12