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Rock Springs Capital Management LP

Q1 2018 Holdings

Filed 2018-05-15 | 149 holdings | $338.6M | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Abbvie Inc(ABBV)COM00287Y109$56.8M600,00016.8%
Acadia Healthcare Company in(ACHC)COM00404A109$49.1M1,253,50014.5%
Collegium Pharmaceutical Inc(COLL)COM19459J104$49.1M1,920,00014.5%
Beigene LTD(ONC)SPONSORED ADR07725L102$37.2M221,25011.0%
Ascendis Pharma A S(ASND)SPONSORED ADR04351P101$18.5M283,5005.5%
Axogen Inc(AXGN)COM05463X106$18.4M505,0005.4%
Alnylam Pharmaceuticals Inc(ALNY)COM02043Q107$17.0M143,0005.0%
Align Technology Inc(ALGN)COM016255101$16.4M65,5004.9%
Biogen Inc(BIIB)COM09062X103$14.5M53,0004.3%
Ardelyx Inc(ARDX)COM039697107$11.5M2,275,5573.4%
Biomarin Pharmaceutical Inc(BMRN)COM09061G101$10.1M125,0003.0%
Adaptimmune Therapeutics PLC(ADAPY)SPONDS ADR00653A107$9.8M875,0002.9%
Aclaris Therapeutics Inc(ACRS)COM00461U105$9.3M530,0002.7%
Coherus Biosciences Inc(CHRS)COM19249H103$7.7M695,0002.3%
Corvus Pharmaceuticals Inc(CRVS)COM221015100$6.6M575,0002.0%
Biocryst Pharmaceuticals(BCRX)COM09058V103$4.4M925,0001.3%
Unitedhealth Group Inc(UNH)COM91324P102$104.3K487,5000.0%
Intuitive Surgical Inc(ISRG)COM NEW46120E602$59.4K143,9000.0%
Alexion Pharmaceuticals Inc(ALXN)COM015351109$54.1K485,0000.0%
Neurocrine Biosciences Inc(NBIX)COM64125C109$50.3K606,2000.0%
Molina Healthcare Inc(MOH)COM60855R100$46.8K576,0000.0%
Spark Therapeutics IncCOM84652J103$41.5K623,5000.0%
Bristol Myers Squibb Co(BMY)COM110122108$41.1K650,0000.0%
GW Pharmaceuticals PLCADS36197T103$40.6K360,0000.0%
Aetna Inc NewCOM00817Y108$40.4K239,0000.0%
Madrigal Pharmaceuticals Inc(MDGL)COM558868105$38.0K325,5000.0%
HCA Healthcare Inc(HCA)COM40412C101$36.9K380,0000.0%
Loxo Oncology IncCOM548862101$36.5K316,5000.0%
Radius Health IncCOM NEW750469207$35.9K1,000,0000.0%
Pacira Pharmaceuticals Inc(PCRX)COM695127100$35.0K1,125,0000.0%
PRA Health Sciences Inc(PRAH)COM69354M108$32.8K395,0000.0%
Tesaro IncCOM881569107$32.7K573,0000.0%
Irhythm Technologies Inc(IRTC)COM450056106$30.1K477,5000.0%
Vertex Pharmaceuticals Inc(VRTX)COM92532F100$29.5K181,0000.0%
Stryker Corp(SYK)COM863667101$28.6K178,0000.0%
Penumbra Inc(PEN)COM70975L107$28.1K243,0000.0%
Puma Biotechnology Inc(PBYI)COM74587V107$28.1K412,9000.0%
Celgene Corp(CELG)COM151020104$27.7K310,1000.0%
Davita Inc(DVA)COM23918K108$26.9K407,5000.0%
Edwards Lifesciences Corp(EW)COM28176E108$26.5K190,0010.0%
Wellcare Health Plans IncCOM94946T106$25.9K134,0000.0%
Amerisourcebergen Corp(COR)COM03073E105$25.4K295,0000.0%
Thermo Fisher Scientific Inc(TMO)COM883556102$23.6K114,5000.0%
Gilead Sciences Inc(GILD)COM375558103$23.6K313,4000.0%
Teleflex Inc(TFX)COM879369106$23.6K92,5000.0%
Avexis IncCOM05366U100$23.5K190,0000.0%
Medicines CoCOM584688105$22.7K690,0000.0%
Epizyme Inc(EPZMEUR)COM29428V104$22.6K1,275,0000.0%
Assembly Biosciences IncCOM045396108$21.8K443,0000.0%
Mersana Therapeutics IncCOM59045L106$20.5K1,300,0000.0%
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