Rock Springs Capital Management LP Q2 2018 Filing

Filed August 14, 2018

Portfolio Value

$2.6B

Holdings

147

Report Date

Q2 2018

Filing Type

13F-HR

All Holdings (147 positions)

StockValue
UNHUNITEDHEALTH GROUP INC
$139.2M
MDGLMADRIGAL PHARMACEUTICALS INC
$95.7M
ISRGINTUITIVE SURGICAL INC
$67.9M
NBIXNEUROCRINE BIOSCIENCES INC
$61.9M
GW PHARMACEUTICALS PLC
$61.4M
ALXNALEXION PHARMACEUTICALS INC
$61.1M
ABBVABBVIE INC
$55.6M
WCGEURWELLCARE HEALTH PLANS INC
$54.9M
MOHMOLINA HEALTHCARE INC
$53.4M
ACHCACADIA HEALTHCARE COMPANY IN
$51.3M
LOXO ONCOLOGY INC
$50.3M
SPARK THERAPEUTICS INC
$45.0M
HCAHCA HEALTHCARE INC
$44.1M
COLLCOLLEGIUM PHARMACEUTICAL INC
$39.4M
SRPTSAREPTA THERAPEUTICS INC
$39.3M
IRTCIRHYTHM TECHNOLOGIES INC
$38.9M
PCRXPACIRA PHARMACEUTICALS INC
$38.4M
RADIUS HEALTH INC
$33.2M
ONCBEIGENE LTD
$33.1M
PENPENUMBRA INC
$32.7M
VRTXVERTEX PHARMACEUTICALS INC
$32.4M
EHCENCOMPASS HEALTH CORP
$30.5M
SYKSTRYKER CORP
$30.1M
CELGCELGENE CORP
$28.6M
DVADAVITA INC
$28.4M
PBYIPUMA BIOTECHNOLOGY INC
$28.1M
TESARO INC
$27.8M
AXGNAXOGEN INC
$27.4M
PRAHPRA HEALTH SCIENCES INC
$26.9M
WRIGHT MED GROUP N V
$26.0M
GILDGILEAD SCIENCES INC
$25.9M
MEDICINES CO
$25.3M
TFXTELEFLEX INC
$24.8M
ALDER BIOPHARMACEUTICALS INC
$24.7M
EWEDWARDS LIFESCIENCES CORP
$24.0M
EXASEXACT SCIENCES CORP
$22.7M
AFWALIGN TECHNOLOGY INC
$22.6M
INGNINOGEN INC
$22.2M
BAXBAXTER INTL INC
$21.9M
HRTXHERON THERAPEUTICS INC
$20.4M
TMOTHERMO FISHER SCIENTIFIC INC
$19.9M
INCYINCYTE CORP
$19.8M
IM8NINSMED INC
$19.5M
NUVAGBPNUVASIVE INC
$19.4M
FGENEURFIBROGEN INC
$19.2M
ABGAMERISOURCEBERGEN CORP
$18.8M
ZBHZIMMER BIOMET HLDGS INC
$17.9M
MERSANA THERAPEUTICS INC
$17.9M
ASMBASSEMBLY BIOSCIENCES INC
$17.6M
ACRSACLARIS THERAPEUTICS INC
$17.1M
ALNYALNYLAM PHARMACEUTICALS INC
$17.1M
GLPGGALAPAGOS NV
$17.1M
OBSEVA SA
$17.0M
JAZZJAZZ PHARMACEUTICALS PLC
$16.9M
EPIZYME INC
$16.8M
AUDENTES THERAPEUTICS INC
$16.8M
ARNAEURARENA PHARMACEUTICALS INC
$16.4M
ASNDASCENDIS PHARMA A S
$16.2M
HOLXHOLOGIC INC
$15.9M
WSTWEST PHARMACEUTICAL SVSC INC
$15.9M
BIOHAVEN PHARMACTL HLDG CO L
$15.7M
IDXXIDEXX LABS INC
$15.7M
AM6AMICUS THERAPEUTICS INC
$15.6M
BIIBBIOGEN INC
$15.4M
RAREULTRAGENYX PHARMACEUTICAL IN
$15.4M
INTERSECT ENT INC
$15.4M
TBPHTHERAVANCE BIOPHARMA INC
$14.8M
GTHXEURG1 THERAPEUTICS INC
$13.0M
EX9EXELIXIS INC
$12.8M
TRANSLATE BIO INC
$12.8M
2L9BLUEPRINT MEDICINES CORP
$12.6M
AMRNAMARIN CORP PLC
$12.4M
PORTOLA PHARMACEUTICALS INC
$12.2M
IMMUNOMEDICS INC
$11.8M
MRTXEURMIRATI THERAPEUTICS INC
$11.8M
BMRNBIOMARIN PHARMACEUTICAL INC
$11.8M
CLVSEURCLOVIS ONCOLOGY INC
$11.6M
RIGLUSDRIGEL PHARMACEUTICALS INC
$11.2M
RETROPHIN INC
$10.9M
ARGXARGENX SE
$10.7M
ANABANAPTYSBIO INC
$10.7M
CLSDUSDCLEARSIDE BIOMEDICAL INC
$10.4M
NVTA1EURINVITAE CORP
$10.3M
AG8AGILENT TECHNOLOGIES INC
$10.1M
ZOGENIX INC
$10.0M
CHRSCOHERUS BIOSCIENCES INC
$9.7M
FIXXEURHOMOLOGY MEDICINES INC
$9.6M
FIVE PRIME THERAPEUTICS INC
$9.4M
ARDXARDELYX INC
$9.3M
ENDOCYTE INC
$9.3M
MOMENTA PHARMACEUTICALS INC
$9.3M
RTI SURGICAL INC
$9.0M
ADAPYADAPTIMMUNE THERAPEUTICS PLC
$8.9M
ODONATE THERAPEUTICS INC
$8.8M
GLOBAL CORD BLOOD CORPORATIO
$8.4M
APTINYX INC
$8.2M
CBAYUSDCYMABAY THERAPEUTICS INC
$7.8M
SPROSPERO THERAPEUTICS INC
$7.7M
SG7SAGE THERAPEUTICS INC
$7.7M
RA PHARMACEUTICALS INC
$7.5M
Page 1 of 2Next