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Rock Springs Capital Management LP

Q4 2016 Holdings

Filed 2017-02-14 | 133 holdings | $183.9M | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Acadia Healthcare Company in(ACHC)COM00404A109$38.3M1,157,50020.8%
Aclaris Therapeutics Inc(ACRS)COM00461U105$29.9M1,100,00016.2%
Ardelyx Inc(ARDX)COM039697107$28.4M2,000,00015.4%
Collegium Pharmaceutical Inc(COLL)COM19459J104$24.9M1,600,00013.5%
Coherus Biosciences Inc(CHRS)COM19249H103$13.6M484,5007.4%
Biogen Inc(BIIB)COM09062X103$13.3M47,0007.2%
Biomarin Pharmaceutical Inc(BMRN)COM09061G101$10.4M125,0005.6%
Beigene LTD(ONC)SPONSORED ADR07725L102$8.0M265,0004.4%
Ascendis Pharma A S(ASND)SPONSORED ADR04351P101$6.6M325,0003.6%
Corvus Pharmaceuticals Inc(CRVS)COM221015100$6.4M450,0003.5%
Adaptimmune Therapeutics PLC(ADAPY)SPONDS ADR00653A107$2.7M675,0001.5%
Tesaro IncCOM881569107$82.5K613,5000.0%
Alexion Pharmaceuticals Inc(ALXN)COM015351109$56.9K465,0000.0%
Aetna Inc NewCOM00817Y108$54.7K441,0000.0%
Merck & Co Inc(MRK)COM58933Y105$44.2K750,0000.0%
GW Pharmaceuticals PLCADS36197T103$39.8K356,0000.0%
Allergan PLCSHSG0177J108$34.9K166,0000.0%
Radius Health IncCOM NEW750469207$34.6K910,2500.0%
Cigna CorporationCOM125509109$33.6K252,0000.0%
Wellcare Health Plans IncCOM94946T106$32.1K234,5000.0%
Spark Therapeutics IncCOM84652J103$31.2K625,0000.0%
Intuitive Surgical Inc(ISRG)COM NEW46120E602$30.4K48,0000.0%
Celgene Corp(CELG)COM151020104$28.1K242,5000.0%
Unitedhealth Group Inc(UNH)COM91324P102$26.4K165,0000.0%
Bristol Myers Squibb Co(BMY)COM110122108$26.3K450,0000.0%
Advanced Accelerator ApplicSPONSORED ADS00790T100$24.9K930,0000.0%
Lilly ELI & Co(LLY)COM532457108$23.9K325,0000.0%
Medicines CoCOM584688105$23.7K699,5000.0%
Shire PLCSPONSORED ADR82481R106$23.4K137,2000.0%
Pacira Pharmaceuticals Inc(PCRX)COM695127100$23.0K713,0000.0%
Gilead Sciences Inc(GILD)COM375558103$19.8K276,5000.0%
Theravance Biopharma Inc(TBPH)COMG8807B106$19.1K600,0000.0%
Penumbra Inc(PEN)COM70975L107$18.9K295,5000.0%
Incyte Corp(INCY)COM45337C102$16.9K169,0000.0%
PRA Health Sciences Inc(PRAH)COM69354M108$16.5K300,0000.0%
Neurocrine Biosciences Inc(NBIX)COM64125C109$15.9K410,0000.0%
Amarin Corp PLCSPONS ADR NEW023111206$15.4K4,991,5000.0%
Wright MED Group N VORD SHS 0.03 PARN96617118$15.3K667,0000.0%
Prothena Corp PLC(PRTA)SHSG72800108$15.2K309,5000.0%
Amgen Inc(AMGN)COM031162100$14.1K96,5000.0%
Jazz Pharmaceuticals PLC(JAZZ)SHS USDG50871105$13.5K123,7000.0%
Galapagos NV(GLPG)SPON ADR36315X101$13.5K210,0000.0%
Willis Towers Watson PUB LTD(WTW)SHSG96629103$13.5K110,0000.0%
Walgreens Boots Alliance Inc(WBA)COM931427108$13.3K161,0000.0%
RA Pharmaceuticals IncCOM74933V108$12.5K826,0000.0%
Danaher Corp del(DHR)COM235851102$12.5K160,0000.0%
Patheon N VSHSN6865W105$11.5K400,0000.0%
Edwards Lifesciences Corp(EW)COM28176E108$11.3K120,5000.0%
Ultragenyx Pharmaceutical in(RARE)COM90400D108$11.2K159,7500.0%
Dermira Inc(DERMEUR)COM24983L104$11.0K362,6000.0%
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