Rock Springs Capital Management LP Q1 2019 Filing

Filed May 15, 2019

Portfolio Value

$2.6B

Holdings

131

Report Date

Q1 2019

Filing Type

13F-HR

All Holdings (131 positions)

StockValue
UNHUNITEDHEALTH GROUP INC
$146.1M
GW PHARMACEUTICALS PLC
$118.0M
AMRNAMARIN CORP PLC
$93.9M
ISRGINTUITIVE SURGICAL INC
$87.0M
WCGEURWELLCARE HEALTH PLANS INC
$86.3M
NBIXNEUROCRINE BIOSCIENCES INC
$74.4M
SPARK THERAPEUTICS INC
$61.2M
HCAHCA HEALTHCARE INC
$59.3M
PCRXPACIRA PHARMACEUTICALS INC
$47.6M
EHCENCOMPASS HEALTH CORP
$46.7M
RAREULTRAGENYX PHARMACEUTICAL IN
$40.2M
SRPTSAREPTA THERAPEUTICS INC
$39.9M
TFXTELEFLEX INC
$39.3M
IRTCIRHYTHM TECHNOLOGIES INC
$37.5M
VRTXVERTEX PHARMACEUTICALS INC
$37.3M
BSXBOSTON SCIENTIFIC CORP
$37.2M
SYKSTRYKER CORP
$35.4M
EWEDWARDS LIFESCIENCES CORP
$35.1M
EXASEXACT SCIENCES CORP
$34.4M
PENPENUMBRA INC
$33.1M
ALXNALEXION PHARMACEUTICALS INC
$32.8M
MDGLMADRIGAL PHARMACEUTICALS INC
$32.0M
PORTOLA PHARMACEUTICALS INC
$30.4M
AFWALIGN TECHNOLOGY INC
$29.9M
MOHMOLINA HEALTHCARE INC
$29.5M
WRIGHT MED GROUP N V
$29.0M
ONCBEIGENE LTD
$28.4M
ACHCACADIA HEALTHCARE COMPANY IN
$27.1M
NVTA1EURINVITAE CORP
$26.9M
IDXXIDEXX LABS INC
$26.9M
INCYINCYTE CORP
$26.9M
PRAHPRA HEALTH SCIENCES INC
$26.5M
ASNDASCENDIS PHARMA A S
$25.1M
IM8NINSMED INC
$24.7M
BAXBAXTER INTL INC
$24.4M
COLLCOLLEGIUM PHARMACEUTICAL INC
$23.9M
RADIUS HEALTH INC
$23.4M
BIIBBIOGEN INC
$23.0M
ARGXARGENX SE
$22.7M
TMOTHERMO FISHER SCIENTIFIC INC
$22.2M
2L9BLUEPRINT MEDICINES CORP
$22.0M
ALNYALNYLAM PHARMACEUTICALS INC
$21.8M
EPIZYME INC
$21.7M
ALDER BIOPHARMACEUTICALS INC
$21.3M
CVETUSDCOVETRUS INC
$20.7M
AUDENTES THERAPEUTICS INC
$20.4M
MEDICINES CO
$20.4M
GLPGGALAPAGOS NV
$19.4M
RETROPHIN INC
$18.8M
RA PHARMACEUTICALS INC
$18.0M
PBYIPUMA BIOTECHNOLOGY INC
$17.8M
SGENEURSEATTLE GENETICS INC
$17.7M
CELGCELGENE CORP
$17.5M
FGENEURFIBROGEN INC
$16.6M
ALLKGUSDALLAKOS INC
$16.4M
IMMUNOMEDICS INC
$15.4M
INTERSECT ENT INC
$14.9M
SG7SAGE THERAPEUTICS INC
$14.7M
AG8AGILENT TECHNOLOGIES INC
$14.7M
CICIGNA CORP NEW
$14.5M
OBSEVA SA
$14.3M
GHGUARDANT HEALTH INC
$13.8M
WSTWEST PHARMACEUTICAL SVSC INC
$13.8M
AM6AMICUS THERAPEUTICS INC
$13.6M
BIOHAVEN PHARMACTL HLDG CO L
$13.4M
MRTXEURMIRATI THERAPEUTICS INC
$13.2M
GBTUSDGLOBAL BLOOD THERAPEUTICS IN
$13.0M
ZOGENIX INC
$12.9M
AXGNAXOGEN INC
$12.7M
TBPHTHERAVANCE BIOPHARMA INC
$12.5M
ANABANAPTYSBIO INC
$12.4M
ZLABZAI LAB LTD
$12.2M
BMRNBIOMARIN PHARMACEUTICAL INC
$12.0M
RTI SURGICAL HOLDINGS INC
$11.7M
PHASEBIO PHARMACEUTICALS INC
$10.8M
RIGLUSDRIGEL PHARMACEUTICALS INC
$10.8M
DERMIRA INC
$10.5M
TRANSLATE BIO INC
$10.3M
FIXXEURHOMOLOGY MEDICINES INC
$10.3M
ACRSACLARIS THERAPEUTICS INC
$10.2M
FRPTFRESHPET INC
$9.9M
ODONATE THERAPEUTICS INC
$9.8M
AXNX*AXONICS MODULATION TECH INC
$9.6M
CBAYUSDCYMABAY THERAPEUTICS INC
$9.5M
NVCRNOVOCURE LTD
$9.4M
CHRSCOHERUS BIOSCIENCES INC
$9.1M
ASMBASSEMBLY BIOSCIENCES INC
$8.9M
HRTXHERON THERAPEUTICS INC
$8.6M
IFRXINFLARX NV
$8.5M
MYOVANT SCIENCES LTD
$8.3M
ACHILLION PHARMACEUTICALS IN
$8.0M
AGIOAGIOS PHARMACEUTICALS INC
$7.9M
MERSANA THERAPEUTICS INC
$7.4M
CLEMENTIA PHARMACEUTICALS IN
$7.2M
BLUEBIRD BIO INC
$7.1M
FIVE PRIME THERAPEUTICS INC
$6.8M
SPROSPERO THERAPEUTICS INC
$6.7M
GLOBAL CORD BLOOD CORPORATIO
$6.5M
AGLEUSDAEGLEA BIOTHERAPEUTICS INC
$6.4M
CLVSEURCLOVIS ONCOLOGY INC
$6.4M
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