Rock Springs Capital Management LP Q4 2016 Filing

Filed February 14, 2017

Portfolio Value

$1.5B

Holdings

133

Report Date

Q4 2016

Filing Type

13F-HR

All Holdings (133 positions)

StockValue
TESARO INC
$82.5M
ALXNALEXION PHARMACEUTICALS INC
$56.9M
AETNA INC NEW
$54.7M
MRKMERCK & CO INC
$44.2M
GW PHARMACEUTICALS PLC
$39.8M
ACHCACADIA HEALTHCARE COMPANY IN
$38.3M
ALLERGAN PLC
$34.9M
RADIUS HEALTH INC
$34.6M
CICIGNA CORPORATION
$33.6M
WCGEURWELLCARE HEALTH PLANS INC
$32.1M
SPARK THERAPEUTICS INC
$31.2M
ISRGINTUITIVE SURGICAL INC
$30.4M
ACRSACLARIS THERAPEUTICS INC
$29.9M
ARDXARDELYX INC
$28.4M
CELGCELGENE CORP
$28.1M
UNHUNITEDHEALTH GROUP INC
$26.4M
BMYBRISTOL MYERS SQUIBB CO
$26.3M
COLLCOLLEGIUM PHARMACEUTICAL INC
$24.9M
ADVANCED ACCELERATOR APPLIC
$24.9M
LLYLILLY ELI & CO
$23.9M
MEDICINES CO
$23.7M
SHIRE PLC
$23.4M
PCRXPACIRA PHARMACEUTICALS INC
$23.0M
GILDGILEAD SCIENCES INC
$19.8M
TBPHTHERAVANCE BIOPHARMA INC
$19.1M
PENPENUMBRA INC
$18.9M
INCYINCYTE CORP
$16.9M
PRAHPRA HEALTH SCIENCES INC
$16.5M
NBIXNEUROCRINE BIOSCIENCES INC
$15.9M
AMRNAMARIN CORP PLC
$15.4M
WRIGHT MED GROUP N V
$15.3M
PRTAPROTHENA CORP PLC
$15.2M
AMGNAMGEN INC
$14.1M
CHRSCOHERUS BIOSCIENCES INC
$13.6M
JAZZJAZZ PHARMACEUTICALS PLC
$13.5M
GLPGGALAPAGOS NV
$13.5M
WTWWILLIS TOWERS WATSON PUB LTD
$13.5M
BIIBBIOGEN INC
$13.3M
WBAWALGREENS BOOTS ALLIANCE INC
$13.3M
RA PHARMACEUTICALS INC
$12.5M
DHRDANAHER CORP DEL
$12.5M
PATHEON N V
$11.5M
EWEDWARDS LIFESCIENCES CORP
$11.3M
RAREULTRAGENYX PHARMACEUTICAL IN
$11.2M
DERMIRA INC
$11.0M
HEALTHSOUTH CORP
$10.9M
HOLXHOLOGIC INC
$10.6M
BMRNBIOMARIN PHARMACEUTICAL INC
$10.4M
THERAPEUTICSMD INC
$9.9M
RETROPHIN INC
$9.9M
NVTA1EURINVITAE CORP
$9.5M
ENVISION HEALTHCARE CORP
$9.2M
AUDENTES THERAPEUTICS INC
$8.9M
MRUSMERUS N V
$8.4M
CLSDUSDCLEARSIDE BIOMEDICAL INC
$8.4M
FIVE PRIME THERAPEUTICS INC
$8.2M
PARATEK PHARMACEUTICALS INC
$8.1M
ONCBEIGENE LTD
$8.0M
REGNREGENERON PHARMACEUTICALS
$7.2M
LGNDLIGAND PHARMACEUTICALS INC
$7.1M
ALKSALKERMES PLC
$6.9M
EPIZYME INC
$6.9M
EGALET CORP
$6.8M
AVEXIS INC
$6.7M
VRTXVERTEX PHARMACEUTICALS INC
$6.6M
ATHENAHEALTH INC
$6.6M
ASNDASCENDIS PHARMA A S
$6.6M
CRVSCORVUS PHARMACEUTICALS INC
$6.4M
IM8NINSMED INC
$6.2M
RTI SURGICAL INC
$6.0M
EXASEXACT SCIENCES CORP
$6.0M
AIMMUNE THERAPEUTICS INC
$6.0M
ACHILLION PHARMACEUTICALS IN
$5.7M
PROTEOSTASIS THERAPEUTICS IN
$5.5M
CHINA CORD BLOOD CORP
$5.4M
SRPTSAREPTA THERAPEUTICS INC
$5.3M
FGENEURFIBROGEN INC
$5.1M
CLVSEURCLOVIS ONCOLOGY INC
$4.9M
MEDPMEDPACE HLDGS INC
$4.9M
ASMBASSEMBLY BIOSCIENCES INC
$4.7M
ADURO BIOTECH INC
$4.7M
MGNXMACROGENICS INC
$4.6M
STERIS PLC
$4.4M
CGENCOMPUGEN LTD
$4.2M
INTERSECT ENT INC
$4.2M
NOVADAQ TECHNOLOGIES INC
$3.9M
ALLERGAN PLC
$3.8M
ALDER BIOPHARMACEUTICALS INC
$3.8M
AM6AMICUS THERAPEUTICS INC
$3.8M
JUNO THERAPEUTICS INC
$3.7M
MEDICINES CO
$3.6M
INVAINNOVIVA INC
$3.6M
KITE PHARMA INC
$3.5M
OTICEUROTONOMY INC
$3.3M
CARDIOME PHARMA CORP
$3.3M
NABRIVA THERAPEUTICS AG
$3.1M
CIDARA THERAPEUTICS INC
$3.1M
ARIAD PHARMACEUTICALS INC
$3.1M
PBYIPUMA BIOTECHNOLOGY INC
$2.9M
ITCIEURINTRA CELLULAR THERAPIES INC
$2.9M
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