Rock Springs Capital Management

Rock Springs Capital Management as of March 31, 2018

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 148 positions in its portfolio as reported in the March 2018 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
UnitedHealth (UNH) 4.5 $104M 488k 214.00
Intuitive Surgical (ISRG) 2.5 $59M 144k 412.83
Abbvie (ABBV) 2.4 $57M 600k 94.65
Alexion Pharmaceuticals 2.3 $54M 485k 111.46
Neurocrine Biosciences (NBIX) 2.1 $50M 606k 82.93
Acadia Healthcare (ACHC) 2.1 $49M 1.3M 39.18
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 2.1 $49M 1.9M 25.55
Molina Healthcare (MOH) 2.0 $47M 576k 81.18
Spark Therapeutics 1.8 $42M 624k 66.59
Bristol Myers Squibb (BMY) 1.8 $41M 650k 63.25
Gw Pharmaceuticals Plc ads 1.7 $41M 360k 112.67
Aetna 1.7 $40M 239k 169.00
Madrigal Pharmaceuticals (MDGL) 1.6 $38M 326k 116.79
Beigene (BGNE) 1.6 $37M 221k 168.00
Hca Holdings (HCA) 1.6 $37M 380k 97.00
Loxo Oncology 1.6 $37M 317k 115.37
Radius Health 1.5 $36M 1.0M 35.94
Pacira Pharmaceuticals (PCRX) 1.5 $35M 1.1M 31.15
Tesaro 1.4 $33M 573k 57.14
Pra Health Sciences 1.4 $33M 395k 82.96
Irhythm Technologies (IRTC) 1.3 $30M 478k 62.95
Vertex Pharmaceuticals Incorporated (VRTX) 1.3 $30M 181k 162.98
Stryker Corporation (SYK) 1.2 $29M 178k 160.92
Puma Biotechnology (PBYI) 1.2 $28M 413k 68.05
Penumbra (PEN) 1.2 $28M 243k 115.65
Celgene Corporation 1.2 $28M 310k 89.21
DaVita (DVA) 1.1 $27M 408k 65.94
Edwards Lifesciences (EW) 1.1 $27M 190k 139.52
WellCare Health Plans 1.1 $26M 134k 193.63
AmerisourceBergen (COR) 1.1 $25M 295k 86.21
Thermo Fisher Scientific (TMO) 1.0 $24M 115k 206.46
Gilead Sciences (GILD) 1.0 $24M 313k 75.39
Teleflex Incorporated (TFX) 1.0 $24M 93k 254.98
Avexis 1.0 $24M 190k 123.58
Medicines Company 1.0 $23M 690k 32.94
Epizyme 1.0 $23M 1.3M 17.75
Assembly Biosciences 0.9 $22M 443k 49.14
Mersana Therapeutics (MRSN) 0.9 $21M 1.3M 15.77
Wright Medical Group Nv 0.8 $20M 1.0M 19.84
Alder Biopharmaceuticals 0.8 $19M 1.5M 12.70
Baxter International (BAX) 0.8 $19M 297k 65.04
Sarepta Therapeutics (SRPT) 0.8 $19M 258k 74.09
Jazz Pharmaceuticals (JAZZ) 0.8 $19M 124k 150.99
Encompass Health Corp (EHC) 0.8 $19M 327k 57.17
Insmed (INSM) 0.8 $19M 825k 22.52
Axogen (AXGN) 0.8 $18M 505k 36.50
Ascendis Pharma A S (ASND) 0.8 $19M 284k 65.40
Galapagos Nv- (GLPG) 0.8 $19M 185k 99.76
Alnylam Pharmaceuticals (ALNY) 0.7 $17M 143k 119.10
Audentes Therapeutics 0.7 $17M 565k 30.05
Prothena (PRTA) 0.7 $17M 454k 36.71
Align Technology (ALGN) 0.7 $16M 66k 251.13
Zimmer Holdings (ZBH) 0.7 $16M 148k 109.04
Intersect Ent 0.7 $16M 410k 39.30
NuVasive 0.7 $16M 305k 52.21
Theravance Biopharma (TBPH) 0.7 $16M 653k 24.25
Incyte Corporation (INCY) 0.7 $15M 183k 83.33
Hologic (HOLX) 0.6 $15M 400k 37.36
Amicus Therapeutics (FOLD) 0.6 $15M 1.0M 15.04
EXACT Sciences Corporation (EXAS) 0.6 $15M 371k 40.33
Arena Pharmaceuticals 0.6 $15M 375k 39.50
Biogen Idec (BIIB) 0.6 $15M 53k 273.81
Blueprint Medicines (BPMC) 0.6 $15M 158k 91.70
Fibrogen (FGEN) 0.6 $14M 310k 46.20
Anaptysbio Inc Common (ANAB) 0.6 $14M 135k 104.08
Inogen (INGN) 0.6 $14M 111k 122.84
Heron Therapeutics (HRTX) 0.6 $13M 476k 27.60
Menlo Therapeutics 0.5 $12M 330k 37.58
Clovis Oncology 0.5 $12M 232k 52.80
IDEXX Laboratories (IDXX) 0.5 $12M 63k 191.40
Amarin Corporation (AMRN) 0.5 $12M 4.0M 3.01
Ardelyx (ARDX) 0.5 $12M 2.3M 5.05
Obseva Sa 0.5 $11M 840k 13.49
Homology Medicines 0.5 $11M 575k 18.70
Portola Pharmaceuticals 0.5 $11M 324k 32.66
Clearside Biomedical (CLSD) 0.5 $11M 975k 10.73
G1 Therapeutics 0.5 $11M 287k 37.05
BioMarin Pharmaceutical (BMRN) 0.4 $10M 125k 81.07
Five Prime Therapeutics 0.4 $10M 586k 17.18
Adaptimmune Therapeutics (ADAP) 0.4 $9.8M 875k 11.23
Aclaris Therapeutics (ACRS) 0.4 $9.3M 530k 17.52
Rigel Pharmaceuticals 0.4 $9.1M 2.6M 3.54
Zogenix 0.4 $9.0M 226k 40.05
RTI Biologics 0.4 $9.0M 2.0M 4.60
Retrophin 0.4 $8.9M 400k 22.36
Ultragenyx Pharmaceutical (RARE) 0.4 $8.8M 173k 50.99
Global China Cord Blood Corp (CORBF) 0.4 $9.0M 880k 10.20
Achillion Pharmaceuticals 0.4 $8.3M 2.3M 3.71
Zoetis Inc Cl A (ZTS) 0.4 $8.4M 101k 83.51
Biohaven Pharmaceutical Holding 0.4 $8.4M 325k 25.76
Odonate Therapeutics Ord 0.3 $8.1M 384k 21.18
Sage Therapeutics (SAGE) 0.3 $7.9M 49k 161.06
Bluebird Bio (BLUE) 0.3 $7.7M 45k 170.76
Coherus Biosciences (CHRS) 0.3 $7.7M 695k 11.05
Spero Therapeutics (SPRO) 0.3 $7.5M 525k 14.25
Global Blood Therapeutics In 0.3 $7.2M 150k 48.30
Macrogenics (MGNX) 0.3 $6.9M 275k 25.16
Immunomedics 0.3 $6.6M 450k 14.61
La Jolla Pharmaceuticl Com Par 0.3 $6.6M 220k 29.78
Invitae (NVTAQ) 0.3 $6.6M 1.4M 4.69
Corvus Pharmaceuticals (CRVS) 0.3 $6.6M 575k 11.53
Momenta Pharmaceuticals 0.3 $6.3M 345k 18.15
Cymabay Therapeutics 0.3 $6.4M 490k 12.99
Gtx Inc Del 0.3 $6.3M 354k 17.75
Myovant Sciences 0.3 $6.3M 295k 21.27
Zai Lab (ZLAB) 0.3 $6.3M 295k 21.35
Agilent Technologies Inc C ommon (A) 0.3 $6.1M 92k 66.90
Endocyte 0.3 $6.1M 675k 9.09
Novavax 0.2 $5.8M 2.8M 2.10
Mirati Therapeutics 0.2 $5.8M 189k 30.70
Paratek Pharmaceuticals 0.2 $5.9M 450k 13.00
Shire 0.2 $5.6M 38k 149.39
Therapeuticsmd 0.2 $5.7M 1.2M 4.87
Insmed Inc convertible security 0.2 $5.3M 6.0M 0.89
Aimmune Therapeutics 0.2 $5.1M 160k 31.83
Adverum Biotechnologies 0.2 $5.2M 900k 5.80
Aeglea Biotherapeutics 0.2 $5.2M 524k 9.92
Clementia 0.2 $5.2M 345k 15.15
Dynavax Technologies (DVAX) 0.2 $5.0M 251k 19.85
Dermira 0.2 $4.8M 600k 7.99
Medicines Company 2.750000 07/15/2023 bond 0.2 $4.8M 5.0M 0.96
Alder Biopharmaceuticals Inc convertible security 0.2 $4.7M 5.0M 0.93
BioCryst Pharmaceuticals (BCRX) 0.2 $4.4M 925k 4.77
Exelixis (EXEL) 0.2 $3.9M 175k 22.15
Intra Cellular Therapies (ITCI) 0.2 $3.9M 188k 21.05
Compugen (CGEN) 0.2 $3.7M 825k 4.45
Medicines Company conv 0.1 $3.5M 3.0M 1.15
Proteostasis Therapeutics In 0.1 $3.2M 675k 4.75
Merus N V (MRUS) 0.1 $3.2M 175k 18.53
Ra Pharmaceuticals 0.1 $3.2M 600k 5.31
Allergan 0.1 $3.0M 18k 168.30
Egalet Corporation note 5.50% 4/1/20 0.1 $3.1M 7.8M 0.40
Nabriva Therapeutics 0.1 $3.1M 625k 5.03
Cardiome Pharma 0.1 $2.8M 1.2M 2.32
Restorbio 0.1 $2.6M 275k 9.58
Dbv Technologies S A 0.1 $1.7M 73k 23.07
Seres Therapeutics (MCRB) 0.1 $1.6M 220k 7.34
Theravance Biopharma Inc note 3.250%11/0 0.1 $1.5M 1.5M 1.01
Radius Health Inc note 3.000% 9/0 0.1 $1.5M 1.5M 1.01
Rhythm Pharmaceuticals (RYTM) 0.1 $1.4M 72k 19.90
Scynexis 0.1 $1.1M 820k 1.34
Cidara Therapeutics Inc Common Stock Usd 0.0001 0.1 $1.2M 300k 4.00
Wright Med Group Inc note 2.000% 2/1 0.0 $1.0M 1.0M 1.00
Pacira Pharmaceuticals Inc convertible security 0.0 $910k 1.0M 0.91
Solid Biosciences 0.0 $938k 125k 7.50
Chiasma 0.0 $788k 525k 1.50
Infinity Pharmaceuticals (INFIQ) 0.0 $567k 270k 2.10
Kura Oncology (KURA) 0.0 $497k 27k 18.75