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Rock Springs Capital Management LP

Q4 2018 Holdings

Filed 2019-02-14 | 133 holdings | $254.7M | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Boston Scientific Corp(BSX)COM101137107$32.3M915,00012.7%
Beigene LTD(ONC)SPONSORED ADR07725L102$30.1M214,80011.8%
Collegium Pharmaceutical Inc(COLL)COM19459J104$27.6M1,605,10510.8%
Acadia Healthcare Company in(ACHC)COM00404A109$23.2M900,7509.1%
Align Technology Inc(ALGN)COM016255101$22.0M105,0008.6%
Argenx SE(ARGX)SPONSORED ADR04016X101$17.1M178,0006.7%
Ascendis Pharma A S(ASND)SPONSORED ADR04351P101$15.3M243,5006.0%
Biogen Inc(BIIB)COM09062X103$15.0M50,0005.9%
Alnylam Pharmaceuticals Inc(ALNY)COM02043Q107$14.1M194,0005.6%
Axogen Inc(AXGN)COM05463X106$12.3M603,9704.8%
Biomarin Pharmaceutical Inc(BMRN)COM09061G101$11.0M129,0004.3%
Aclaris Therapeutics Inc(ACRS)COM00461U105$9.8M1,329,4003.9%
Coherus Biosciences Inc(CHRS)COM19249H103$6.1M670,0002.4%
Biocryst Pharmaceuticals(BCRX)COM09058V103$5.6M700,0002.2%
Adaptimmune Therapeutics PLC(ADAPY)SPONDS ADR00653A107$4.3M750,0001.7%
Ardelyx Inc(ARDX)COM039697107$3.6M2,000,0001.4%
Arvinas Inc(ARVN)COM04335A105$1.9M150,0000.8%
Corvus Pharmaceuticals Inc(CRVS)COM221015100$1.5M400,0000.6%
Unitedhealth Group Inc(UNH)COM91324P102$150.2K603,1000.1%
Wellcare Health Plans IncCOM94946T106$92.0K389,5000.0%
Intuitive Surgical Inc(ISRG)COM NEW46120E602$72.8K152,0000.0%
Amarin Corp PLCSPONS ADR NEW023111206$60.9K4,476,0000.0%
GW Pharmaceuticals PLCADS36197T103$58.4K599,5000.0%
HCA Healthcare Inc(HCA)COM40412C101$56.6K455,0000.0%
Neurocrine Biosciences Inc(NBIX)COM64125C109$56.3K788,6000.0%
Pacira Pharmaceuticals Inc(PCRX)COM695127100$53.8K1,250,0000.0%
Encompass Health Corp(EHC)COM29261A100$44.7K725,0000.0%
Tesaro IncCOM881569107$44.7K601,7000.0%
Molina Healthcare Inc(MOH)COM60855R100$39.7K342,0000.0%
Sarepta Therapeutics Inc(SRPT)COM803607100$35.7K327,0000.0%
Loxo Oncology IncCOM548862101$33.8K241,5000.0%
Vertex Pharmaceuticals Inc(VRTX)COM92532F100$33.6K203,0000.0%
Teleflex Inc(TFX)COM879369106$33.6K130,0000.0%
Irhythm Technologies Inc(IRTC)COM450056106$33.5K482,0000.0%
Edwards Lifesciences Corp(EW)COM28176E108$28.1K183,5000.0%
Stryker Corp(SYK)COM863667101$28.1K179,0000.0%
Penumbra Inc(PEN)COM70975L107$27.5K225,0000.0%
Wright MED Group N VORD SHS 0.03 PARN96617118$27.2K1,000,0000.0%
Madrigal Pharmaceuticals Inc(MDGL)COM558868105$27.2K241,0000.0%
Exact Sciences Corp(EXAS)COM30063P105$24.3K385,0000.0%
Alexion Pharmaceuticals Inc(ALXN)COM015351109$23.6K242,5000.0%
Thermo Fisher Scientific Inc(TMO)COM883556102$21.5K96,0000.0%
Allakos Inc(ALLKGUSD)COM01671P100$21.1K404,0000.0%
Spark Therapeutics IncCOM84652J103$21.0K537,5000.0%
Idexx Labs Inc(IDXX)COM45168D104$20.6K110,5000.0%
Baxter Intl Inc(BAX)COM071813109$19.8K300,7000.0%
Incyte Corp(INCY)COM45337C102$19.7K310,0000.0%
Ultragenyx Pharmaceutical in(RARE)COM90400D108$18.5K425,0000.0%
PRA Health Sciences Inc(PRAH)COM69354M108$18.4K200,0000.0%
Radius Health IncCOM NEW750469207$18.1K1,100,0000.0%
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