Rock Springs Capital Management

Rock Springs Capital Management as of June 30, 2017

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 148 positions in its portfolio as reported in the June 2017 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Tesaro 3.5 $69M 491k 139.86
Acadia Healthcare (ACHC) 3.4 $67M 1.4M 49.38
Aetna 3.0 $59M 388k 151.83
UnitedHealth (UNH) 2.9 $58M 314k 185.42
Alexion Pharmaceuticals 2.8 $56M 463k 121.67
Pacira Pharmaceuticals (PCRX) 2.5 $50M 1.0M 47.70
Merck & Co (MRK) 2.5 $49M 758k 64.09
CIGNA Corporation 2.3 $45M 270k 167.39
Intuitive Surgical (ISRG) 2.3 $45M 48k 935.38
Radius Health 2.1 $41M 910k 45.23
Allergan 1.9 $38M 156k 243.09
Spark Therapeutics 1.9 $37M 625k 59.74
Gw Pharmaceuticals Plc ads 1.9 $37M 366k 100.25
WellCare Health Plans 1.8 $36M 198k 179.56
Medtronic (MDT) 1.8 $36M 400k 88.75
Pra Health Sciences 1.8 $35M 463k 75.01
Advanced Accelerat spon ads each rep 2 ord 1.7 $33M 840k 39.04
Humana (HUM) 1.6 $32M 133k 240.62
Celgene Corporation 1.6 $32M 245k 129.87
Penumbra (PEN) 1.4 $27M 311k 87.75
Medicines Company 1.3 $26M 694k 38.01
Theravance Biopharma (TBPH) 1.2 $24M 600k 39.84
Johnson & Johnson (JNJ) 1.2 $23M 175k 132.29
Loxo Oncology 1.2 $23M 288k 80.19
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 1.1 $23M 1.8M 12.51
Edwards Lifesciences (EW) 1.1 $23M 190k 118.24
Almost Family 1.1 $22M 362k 61.65
Gilead Sciences (GILD) 1.1 $22M 313k 70.78
Incyte Corporation (INCY) 1.1 $22M 173k 125.91
Clovis Oncology 1.1 $22M 232k 93.63
Mersana Therapeutics (MRSN) 1.1 $21M 1.5M 13.97
Thermo Fisher Scientific (TMO) 1.0 $19M 110k 174.47
Neurocrine Biosciences (NBIX) 1.0 $19M 419k 46.00
Jazz Pharmaceuticals (JAZZ) 1.0 $19M 124k 155.50
Hologic (HOLX) 1.0 $19M 420k 45.38
Danaher Corporation (DHR) 1.0 $19M 225k 84.39
Wright Medical Group Nv 0.9 $18M 670k 27.49
C.R. Bard 0.9 $18M 58k 316.10
Molina Healthcare (MOH) 0.9 $18M 264k 69.18
Epizyme 0.9 $18M 1.2M 15.10
Amarin Corporation (AMRN) 0.9 $17M 4.3M 4.03
Galapagos Nv- (GLPG) 0.9 $17M 222k 76.52
Prothena (PRTA) 0.8 $17M 310k 54.12
Vertex Pharmaceuticals Incorporated (VRTX) 0.8 $17M 129k 128.87
Puma Biotechnology (PBYI) 0.8 $16M 186k 87.40
Willis Towers Watson (WTW) 0.8 $16M 110k 145.46
Portola Pharmaceuticals 0.8 $16M 280k 56.17
EXACT Sciences Corporation (EXAS) 0.8 $16M 438k 35.37
Biogen Idec (BIIB) 0.7 $14M 53k 271.36
Paratek Pharmaceuticals 0.7 $15M 600k 24.10
Avexis 0.7 $14M 175k 82.16
Baxter International (BAX) 0.7 $14M 230k 60.54
Healthsouth 0.7 $13M 265k 48.40
Aclaris Therapeutics (ACRS) 0.6 $12M 440k 27.12
Beigene (BGNE) 0.6 $12M 265k 45.00
RTI Biologics 0.6 $11M 2.0M 5.85
Invitae (NVTAQ) 0.6 $12M 1.2M 9.56
BioMarin Pharmaceutical (BMRN) 0.6 $11M 125k 90.82
Dermira 0.6 $11M 388k 29.14
Audentes Therapeutics 0.6 $11M 595k 19.13
Ra Pharmaceuticals 0.6 $11M 600k 18.74
Ardelyx (ARDX) 0.5 $10M 2.0M 5.10
Ultragenyx Pharmaceutical (RARE) 0.5 $10M 161k 62.11
Coherus Biosciences (CHRS) 0.5 $10M 694k 14.35
Intersect Ent 0.5 $9.6M 345k 27.95
Fibrogen (FGEN) 0.5 $9.0M 280k 32.30
Ascendis Pharma A S (ASND) 0.5 $9.0M 325k 27.76
Madrigal Pharmaceuticals (MDGL) 0.4 $8.8M 540k 16.26
Therapeuticsmd 0.4 $8.4M 1.6M 5.27
Clearside Biomedical (CLSD) 0.4 $8.5M 935k 9.11
Alnylam Pharmaceuticals (ALNY) 0.4 $8.4M 105k 79.76
CHINA CORD Blood Corp 0.4 $8.3M 880k 9.48
Insmed (INSM) 0.4 $8.0M 468k 17.16
Assembly Biosciences 0.4 $8.1M 390k 20.65
Regeneron Pharmaceuticals (REGN) 0.4 $7.9M 16k 491.12
Achillion Pharmaceuticals 0.4 $7.9M 1.7M 4.59
Amicus Therapeutics (FOLD) 0.4 $7.6M 758k 10.07
Retrophin 0.4 $7.8M 400k 19.39
Biohaven Pharmaceutical Holding 0.4 $7.7M 307k 25.00
Neuroderm Ltd F 0.4 $7.1M 238k 29.90
Obseva Sa 0.4 $7.2M 840k 8.55
Sarepta Therapeutics (SRPT) 0.3 $6.9M 205k 33.71
Kite Pharma 0.3 $7.0M 68k 103.67
Walgreen Boots Alliance (WBA) 0.3 $6.7M 86k 78.31
Juno Therapeutics 0.3 $6.7M 225k 29.89
Lexicon Pharmaceuticals (LXRX) 0.3 $6.5M 394k 16.45
Axogen (AXGN) 0.3 $6.3M 375k 16.75
Merus N V (MRUS) 0.3 $6.4M 402k 15.85
Five Prime Therapeutics 0.3 $5.9M 197k 30.11
Aimmune Therapeutics 0.3 $6.0M 293k 20.56
Steris 0.3 $5.9M 73k 81.50
Nabriva Therapeutics 0.3 $5.5M 525k 10.48
Cardiome Pharma 0.3 $5.4M 1.2M 4.52
Medicines Company 2.750000 07/15/2023 bond 0.3 $5.3M 5.0M 1.05
G1 Therapeutics 0.3 $5.4M 312k 17.44
Seattle Genetics 0.3 $5.2M 100k 51.74
Corvus Pharmaceuticals (CRVS) 0.3 $5.1M 423k 12.10
ACADIA Pharmaceuticals (ACAD) 0.2 $4.9M 174k 27.89
Tetraphase Pharmaceuticals 0.2 $5.0M 698k 7.13
Egalet Corporation note 5.50% 4/1/20 0.2 $5.0M 7.8M 0.64
Aduro Biotech 0.2 $4.7M 415k 11.40
Exelixis (EXEL) 0.2 $4.3M 175k 24.63
Allergan Plc pfd conv ser a 0.2 $4.3M 5.0k 867.20
Global Blood Therapeutics In 0.2 $4.1M 150k 27.35
Macrogenics (MGNX) 0.2 $3.9M 225k 17.51
Otonomy 0.2 $4.0M 210k 18.85
Adaptimmune Therapeutics (ADAP) 0.2 $3.9M 875k 4.49
Medicines Company conv 0.2 $3.9M 3.0M 1.30
Hill-Rom Holdings 0.2 $3.6M 45k 79.60
Align Technology (ALGN) 0.2 $3.5M 23k 150.13
Bluebird Bio (BLUE) 0.2 $3.4M 32k 105.06
Compugen (CGEN) 0.2 $3.1M 825k 3.80
Alkermes (ALKS) 0.1 $3.0M 52k 57.96
Axovant Sciences 0.1 $2.9M 125k 23.19
Bristol Myers Squibb (BMY) 0.1 $2.8M 50k 55.72
Zimmer Holdings (ZBH) 0.1 $2.7M 21k 128.39
Rigel Pharmaceuticals 0.1 $2.7M 1.0M 2.73
Glycomimetics (GLYC) 0.1 $2.5M 225k 11.16
Genocea Biosciences 0.1 $2.5M 480k 5.22
Healthequity (HQY) 0.1 $2.5M 51k 49.82
Dbv Technologies S A 0.1 $2.6M 73k 35.71
Seres Therapeutics (MCRB) 0.1 $2.5M 220k 11.30
Glaukos (GKOS) 0.1 $2.6M 63k 41.47
Innoviva (INVA) 0.1 $2.6M 200k 12.80
Intra Cellular Therapies (ITCI) 0.1 $2.3M 188k 12.42
Alder Biopharmaceuticals 0.1 $2.1M 182k 11.45
Cidara Therapeutics Inc Common Stock Usd 0.0001 0.1 $2.3M 300k 7.50
Proteostasis Therapeutics In 0.1 $2.1M 450k 4.68
Aeglea Biotherapeutics 0.1 $2.0M 524k 3.84
Theravance Biopharma Inc note 3.250%11/0 0.1 $2.0M 1.5M 1.35
Novadaq Technologies 0.1 $1.8M 150k 11.72
Myovant Sciences 0.1 $1.8M 150k 11.70
Dynavax Technologies (DVAX) 0.1 $1.6M 165k 9.65
Atyr Pharma Inc Common Stock Usd 0.001 0.1 $1.6M 475k 3.40
Scynexis 0.1 $1.4M 760k 1.79
Nivalis Therapeutics 0.1 $1.4M 600k 2.41
Wright Med Group Inc note 2.000% 2/1 0.1 $1.1M 1.0M 1.12
Novavax 0.1 $943k 820k 1.15
Perrigo Company (PRGO) 0.0 $740k 9.8k 75.51
Egalet 0.0 $711k 300k 2.37
Chiasma 0.0 $714k 493k 1.45
Newlink Genetics Corporation 0.0 $533k 73k 7.35
Infinity Pharmaceuticals (INFIQ) 0.0 $424k 270k 1.57
Tandem Diabetes Care 0.0 $450k 563k 0.80
Dimension Therapeutics 0.0 $394k 271k 1.45
Orexigen Therapeutics 0.0 $479k 165k 2.90
Cerulean Pharma 0.0 $275k 625k 0.44
Anthera Pharmaceuticals (ANTH) 0.0 $268k 166k 1.62