Rock Springs Capital Management LP Q1 2019 Filing

Filed May 15, 2019

Portfolio Value

$2.6T

Holdings

131

Report Date

Q1 2019

Filing Type

13F-HR

All Holdings (131 positions)

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