Rock Springs Capital Management LP Q1 2018 Filing

Filed May 15, 2018

Portfolio Value

$2.3B

Holdings

148

Report Date

Q1 2018

Filing Type

13F-HR

All Holdings (148 positions)

StockValue
UNHUNITEDHEALTH GROUP INC
$104.3M
ISRGINTUITIVE SURGICAL INC
$59.4M
ABBVABBVIE INC
$56.8M
ALXNALEXION PHARMACEUTICALS INC
$54.1M
NBIXNEUROCRINE BIOSCIENCES INC
$50.3M
ACHCACADIA HEALTHCARE COMPANY IN
$49.1M
COLLCOLLEGIUM PHARMACEUTICAL INC
$49.1M
MOHMOLINA HEALTHCARE INC
$46.8M
SPARK THERAPEUTICS INC
$41.5M
BMYBRISTOL MYERS SQUIBB CO
$41.1M
GW PHARMACEUTICALS PLC
$40.6M
AETNA INC NEW
$40.4M
MDGLMADRIGAL PHARMACEUTICALS INC
$38.0M
ONCBEIGENE LTD
$37.2M
HCAHCA HEALTHCARE INC
$36.9M
LOXO ONCOLOGY INC
$36.5M
RADIUS HEALTH INC
$35.9M
PCRXPACIRA PHARMACEUTICALS INC
$35.0M
PRAHPRA HEALTH SCIENCES INC
$32.8M
TESARO INC
$32.7M
IRTCIRHYTHM TECHNOLOGIES INC
$30.1M
VRTXVERTEX PHARMACEUTICALS INC
$29.5M
SYKSTRYKER CORP
$28.6M
PENPENUMBRA INC
$28.1M
PBYIPUMA BIOTECHNOLOGY INC
$28.1M
CELGCELGENE CORP
$27.7M
DVADAVITA INC
$26.9M
EWEDWARDS LIFESCIENCES CORP
$26.5M
WCGEURWELLCARE HEALTH PLANS INC
$25.9M
ABGAMERISOURCEBERGEN CORP
$25.4M
TMOTHERMO FISHER SCIENTIFIC INC
$23.6M
GILDGILEAD SCIENCES INC
$23.6M
TFXTELEFLEX INC
$23.6M
AVEXIS INC
$23.5M
MEDICINES CO
$22.7M
EPIZYME INC
$22.6M
ASMBASSEMBLY BIOSCIENCES INC
$21.8M
MERSANA THERAPEUTICS INC
$20.5M
WRIGHT MED GROUP N V
$19.8M
ALDER BIOPHARMACEUTICALS INC
$19.4M
BAXBAXTER INTL INC
$19.3M
SRPTSAREPTA THERAPEUTICS INC
$19.1M
EHCENCOMPASS HEALTH CORP
$18.7M
JAZZJAZZ PHARMACEUTICALS PLC
$18.7M
IM8NINSMED INC
$18.6M
ASNDASCENDIS PHARMA A S
$18.5M
GLPGGALAPAGOS NV
$18.5M
AXGNAXOGEN INC
$18.4M
ALNYALNYLAM PHARMACEUTICALS INC
$17.0M
AUDENTES THERAPEUTICS INC
$17.0M
PRTAPROTHENA CORP PLC
$16.6M
AFWALIGN TECHNOLOGY INC
$16.4M
INTERSECT ENT INC
$16.1M
ZBHZIMMER BIOMET HLDGS INC
$16.1M
NUVAGBPNUVASIVE INC
$15.9M
TBPHTHERAVANCE BIOPHARMA INC
$15.8M
INCYINCYTE CORP
$15.2M
AM6AMICUS THERAPEUTICS INC
$15.0M
HOLXHOLOGIC INC
$14.9M
EXASEXACT SCIENCES CORP
$14.9M
ARNAEURARENA PHARMACEUTICALS INC
$14.8M
BIIBBIOGEN INC
$14.5M
2L9BLUEPRINT MEDICINES CORP
$14.5M
FGENEURFIBROGEN INC
$14.3M
ANABANAPTYSBIO INC
$14.1M
INGNINOGEN INC
$13.6M
HRTXHERON THERAPEUTICS INC
$13.1M
MENLO THERAPEUTICS INC
$12.4M
CLVSEURCLOVIS ONCOLOGY INC
$12.2M
IDXXIDEXX LABS INC
$12.1M
AMRNAMARIN CORP PLC
$12.0M
ARDXARDELYX INC
$11.5M
OBSEVA SA
$11.3M
FIXXEURHOMOLOGY MEDICINES INC
$10.8M
GTHXEURG1 THERAPEUTICS INC
$10.6M
PORTOLA PHARMACEUTICALS INC
$10.6M
CLSDUSDCLEARSIDE BIOMEDICAL INC
$10.5M
BMRNBIOMARIN PHARMACEUTICAL INC
$10.1M
FIVE PRIME THERAPEUTICS INC
$10.1M
ADAPYADAPTIMMUNE THERAPEUTICS PLC
$9.8M
ACRSACLARIS THERAPEUTICS INC
$9.3M
RIGLUSDRIGEL PHARMACEUTICALS INC
$9.1M
ZOGENIX INC
$9.0M
GLOBAL CORD BLOOD CORPORATIO
$9.0M
RTI SURGICAL INC
$9.0M
RETROPHIN INC
$8.9M
RAREULTRAGENYX PHARMACEUTICAL IN
$8.8M
ZTSZOETIS INC
$8.4M
BIOHAVEN PHARMACTL HLDG CO L
$8.4M
ACHILLION PHARMACEUTICALS IN
$8.3M
ODONATE THERAPEUTICS INC
$8.1M
SG7SAGE THERAPEUTICS INC
$7.9M
BLUEBIRD BIO INC
$7.7M
CHRSCOHERUS BIOSCIENCES INC
$7.7M
SPROSPERO THERAPEUTICS INC
$7.5M
GBTUSDGLOBAL BLOOD THERAPEUTICS IN
$7.2M
MGNXMACROGENICS INC
$6.9M
CRVSCORVUS PHARMACEUTICALS INC
$6.6M
IMMUNOMEDICS INC
$6.6M
NVTA1EURINVITAE CORP
$6.6M
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