Rock Springs Capital Management LP Diversified Active

Location: Baltimore, MD

CIK: 0001595725 · Show all filings

Period: Q2 2019 (← Previous) (Next →)

Filing Date: Aug 14, 2019

Total Value: $2.764B (99.1% shares, 0.9% debt)

Holdings (135)

UNH UNITEDHEALTH GROUP INC 5.2%
Value $144M Shares 591,000 Est. Cost $164.29 Unrealized +31.2%
GW PHARMACEUTICALS PLC 3.8%
Value $104M Shares 605,000 Est. Cost $110.88 Unrealized
WELLCARE HEALTH PLANS INC 3.3%
Value $91.36M Shares 320,500 Est. Cost $187.33 Unrealized
AMARIN CORP PLC 3.2%
Value $87.74M Shares 4,525,000 Est. Cost $4.67 Unrealized
NBIX NEUROCRINE BIOSCIENCES INC 3.1%
Value $86.37M Shares 1,023,000 Est. Cost $58.49 Unrealized +40.4%
ISRG INTUITIVE SURGICAL INC 2.9%
Value $79.99M Shares 152,500 Est. Cost $105.96 Unrealized +61.7%
HCA HCA HEALTHCARE INC 2.2%
Value $61.5M Shares 455,000 Est. Cost $92.21 Unrealized +29.5%
PCRX PACIRA BIOSCIENCES 2.0%
Value $54.36M Shares 1,250,000 Est. Cost $47.44 Unrealized -10.5%
SPARK THERAPEUTICS INC 1.9%
Value $51.74M Shares 505,371 Est. Cost $58.20 Unrealized
EHC ENCOMPASS HEALTH CORP 1.8%
Value $51.01M Shares 805,000 Est. Cost $45.88 Unrealized -2.7%
SRPT SAREPTA THERAPEUTICS INC 1.8%
Value $49.38M Shares 325,000 Est. Cost $50.84 Unrealized +139.1%
BMY BRISTOL MYERS SQUIBB CO 1.7%
Value $47.62M Shares 1,050,000 Est. Cost $36.12 Unrealized 0.0%
EXAS EXACT SCIENCES CORP 1.7%
Value $46.86M Shares 397,000 Est. Cost $23.92 Unrealized +321.3%
TFX TELEFLEX INC 1.6%
Value $43.05M Shares 130,000 Est. Cost $242.14 Unrealized +19.9%
BSX BOSTON SCIENTIFIC CORP 1.5%
Value $41.69M Shares 970,000 Est. Cost $34.42 Unrealized +11.7%
CHRS COHERUS BIOSCIENCES INC 1.5%
Value $41.55M Shares 1,880,000 Est. Cost $18.77 Unrealized -7.5%
IRTC IRHYTHM TECHNOLOGIES INC 1.4%
Value $39.51M Shares 499,615 Est. Cost $49.38 Unrealized +47.5%
PEN PENUMBRA INC 1.4%
Value $38.24M Shares 239,000 Est. Cost $53.71 Unrealized +168.9%
VRTX VERTEX PHARMACEUTICALS INC 1.3%
Value $37.23M Shares 203,000 Est. Cost $117.87 Unrealized +48.3%
ACHC ACADIA HEALTHCARE COMPANY IN 1.3%
Value $36.87M Shares 1,055,000 Est. Cost $48.00 Unrealized -32.6%
RARE ULTRAGENYX PHARMACEUTICAL IN 1.3%
Value $36.83M Shares 580,000 Est. Cost $57.71 Unrealized +10.3%
SYK STRYKER CORP 1.3%
Value $36.8M Shares 179,000 Est. Cost $141.99 Unrealized +25.2%
EW EDWARDS LIFESCIENCES CORP 1.2%
Value $33.9M Shares 183,500 Est. Cost $33.73 Unrealized +79.3%
IDXX IDEXX LABS INC 1.2%
Value $33.09M Shares 120,200 Est. Cost $198.10 Unrealized +24.4%
ALEXION PHARMACEUTICALS INC 1.1%
Value $31.76M Shares 242,500 Est. Cost $138.55 Unrealized
RADIUS HEALTH INC 1.1%
Value $30.45M Shares 1,250,000 Est. Cost $37.49 Unrealized
MOH MOLINA HEALTHCARE INC 1.1%
Value $29.49M Shares 206,000 Est. Cost $65.41 Unrealized +109.4%
PODD INSULET CORP 1.1%
Value $29.19M Shares 244,500 Est. Cost $102.53 Unrealized 0.0%
MEDICINES CO 1.1%
Value $29.18M Shares 800,000 Est. Cost $32.66 Unrealized
BLUEPRINT MEDICINES CORP 1.0%
Value $29.01M Shares 307,500 Est. Cost $74.75 Unrealized
ADPT ADAPTIVE BIOTECHNOLOGIES COR 1.0%
Value $28.98M Shares 600,000 Est. Cost $44.30 Unrealized 0.0%
ALGN ALIGN TECHNOLOGY INC 1.0%
Value $28.74M Shares 105,000 Est. Cost $198.28 Unrealized +52.3%
CI CIGNA CORP NEW 1.0%
Value $28.72M Shares 182,300 Est. Cost $155.03 Unrealized -7.5%
PORTOLA PHARMACEUTICALS INC 1.0%
Value $27.35M Shares 1,008,000 Est. Cost $39.73 Unrealized
MDGL MADRIGAL PHARMACEUTICALS INC 1.0%
Value $26.93M Shares 256,900 Est. Cost $35.98 Unrealized +197.7%
ONC BEIGENE LTD 1.0%
Value $26.62M Shares 214,800 Est. Cost $33.43 Unrealized
INCY INCYTE CORP 1.0%
Value $26.53M Shares 312,300 Est. Cost $68.12 Unrealized +17.8%
INVITAE CORP 1.0%
Value $26.44M Shares 1,125,000 Est. Cost $10.13 Unrealized
ARGX ARGENX SE 0.9%
Value $25.73M Shares 181,700 Est. Cost $83.26 Unrealized
BAX BAXTER INTL INC 0.9%
Value $24.63M Shares 300,700 Est. Cost $51.40 Unrealized +33.2%
ASND ASCENDIS PHARMA A S 0.9%
Value $24.59M Shares 213,500 Est. Cost $18.03 Unrealized
RA PHARMACEUTICALS INC 0.9%
Value $24.18M Shares 804,000 Est. Cost $14.70 Unrealized
PRA HEALTH SCIENCES INC 0.9%
Value $23.8M Shares 240,000 Est. Cost $54.18 Unrealized
TMO THERMO FISHER SCIENTIFIC INC 0.9%
Value $23.79M Shares 81,000 Est. Cost $165.72 Unrealized +63.4%
ALNY ALNYLAM PHARMACEUTICALS INC 0.9%
Value $23.78M Shares 327,700 Est. Cost $82.95 Unrealized -7.5%
EPIZYME INC 0.8%
Value $23.22M Shares 1,850,100 Est. Cost $13.92 Unrealized
BIIB BIOGEN INC 0.8%
Value $22.8M Shares 97,500 Est. Cost Unrealized
INSM INSMED INC 0.8%
Value $22.78M Shares 890,000 Est. Cost $20.30 Unrealized +37.2%
GLPG GALAPAGOS NV 0.8%
Value $21.27M Shares 165,000 Est. Cost $50.00 Unrealized
MIRATI THERAPEUTICS INC 0.8%
Value $20.86M Shares 202,500 Est. Cost $41.06 Unrealized
COLL COLLEGIUM PHARMACEUTICAL INC 0.8%
Value $20.75M Shares 1,577,893 Est. Cost $15.97 Unrealized -16.3%
ZLAB ZAI LAB LTD 0.7%
Value $19.18M Shares 550,000 Est. Cost $28.53 Unrealized
RETROPHIN INC 0.7%
Value $19.09M Shares 950,000 Est. Cost $22.85 Unrealized
PHASEBIO PHARMACEUTICALS INC 0.7%
Value $18.67M Shares 1,423,256 Est. Cost $6.46 Unrealized
ALDER BIOPHARMACEUTICALS INC 0.7%
Value $18.39M Shares 1,562,300 Est. Cost $13.92 Unrealized
INTERSECT ENT INC 0.7%
Value $17.98M Shares 790,000 Est. Cost $25.82 Unrealized
ALLAKOS INC 0.6%
Value $17.5M Shares 404,000 Est. Cost $44.99 Unrealized
WST WEST PHARMACEUTICAL SVSC INC 0.6%
Value $17.21M Shares 137,500 Est. Cost $92.27 Unrealized +25.6%
CELGENE CORP 0.6%
Value $17.11M Shares 185,150 Est. Cost $112.23 Unrealized
SAGE THERAPEUTICS INC 0.6%
Value $16.94M Shares 92,500 Est. Cost $125.91 Unrealized
SEATTLE GENETICS INC 0.6%
Value $16.75M Shares 242,000 Est. Cost $59.37 Unrealized
GH GUARDANT HEALTH INC 0.6%
Value $16.4M Shares 190,000 Est. Cost $38.92 Unrealized +96.2%
AXONICS MODULATION TECH INC 0.6%
Value $16.39M Shares 400,000 Est. Cost $15.11 Unrealized
ODONATE THERAPEUTICS INC 0.6%
Value $15.78M Shares 430,000 Est. Cost $24.20 Unrealized
AUDENTES THERAPEUTICS INC 0.6%
Value $15.52M Shares 410,000 Est. Cost $20.08 Unrealized
BIOHAVEN PHARMACTL HLDG CO L 0.5%
Value $15.04M Shares 343,500 Est. Cost $31.69 Unrealized
GLOBAL BLOOD THERAPEUTICS IN 0.5%
Value $13.94M Shares 265,000 Est. Cost $38.46 Unrealized
FIBROGEN INC 0.5%
Value $13.82M Shares 306,000 Est. Cost $29.90 Unrealized
A AGILENT TECHNOLOGIES INC 0.5%
Value $13.65M Shares 182,800 Est. Cost $64.15 Unrealized +10.2%
TRANSLATE BIO INC 0.5%
Value $12.75M Shares 1,009,179 Est. Cost $12.65 Unrealized
NEVRO CORP 0.5%
Value $12.67M Shares 195,500 Est. Cost $64.42 Unrealized
OBSEVA SA 0.5%
Value $12.67M Shares 1,120,000 Est. Cost $11.59 Unrealized
FOLD AMICUS THERAPEUTICS INC 0.5%
Value $12.48M Shares 1,000,000 Est. Cost $11.48 Unrealized +10.6%
IMMUNOMEDICS INC 0.4%
Value $12.41M Shares 895,000 Est. Cost $17.07 Unrealized
NVCR NOVOCURE LTD 0.4%
Value $12.33M Shares 195,000 Est. Cost $36.98 Unrealized +37.0%
ANAB ANAPTYSBIO INC 0.4%
Value $12.33M Shares 218,500 Est. Cost $49.90 Unrealized +44.3%
BMRN BIOMARIN PHARMACEUTICAL INC 0.4%
Value $12.21M Shares 142,500 Est. Cost $99.12 Unrealized -13.7%
AXGN AXOGEN INC 0.4%
Value $11.96M Shares 603,970 Est. Cost $19.50 Unrealized +9.8%
ZOGENIX INC 0.4%
Value $11.23M Shares 235,000 Est. Cost $38.28 Unrealized
RIGEL PHARMACEUTICALS INC 0.4%
Value $10.96M Shares 4,200,000 Est. Cost $3.20 Unrealized
ABBV ABBVIE INC 0.4%
Value $10.91M Shares 150,000 Est. Cost $59.38 Unrealized 0.0%
FRPT FRESHPET INC 0.4%
Value $10.7M Shares 235,000 Est. Cost $34.80 Unrealized +30.1%
TBPH THERAVANCE BIOPHARMA INC 0.3%
Value $8.982M Shares 550,000 Est. Cost $20.11 Unrealized +0.8%
AGIO AGIOS PHARMACEUTICALS INC 0.3%
Value $8.505M Shares 170,500 Est. Cost $56.75 Unrealized -5.8%
HOMOLOGY MEDICINES INC 0.3%
Value $8.317M Shares 425,000 Est. Cost $18.81 Unrealized
RTI SURGICAL HOLDINGS INC 0.3%
Value $8.288M Shares 1,950,000 Est. Cost $4.35 Unrealized
KARUNA THERAPEUTICS INC 0.3%
Value $8.278M Shares 413,500 Est. Cost $20.02 Unrealized
ACHILLION PHARMACEUTICALS IN 0.3%
Value $7.906M Shares 2,950,000 Est. Cost $6.27 Unrealized
ASSEMBLY BIOSCIENCES INC 0.3%
Value $7.554M Shares 560,000 Est. Cost $17.66 Unrealized
DERMIRA INC 0.3%
Value $7.409M Shares 775,000 Est. Cost $16.41 Unrealized
PBYI PUMA BIOTECHNOLOGY INC 0.2%
Value $6.792M Shares 534,400 Est. Cost $67.17 Unrealized -65.7%
CYMABAY THERAPEUTICS INC 0.2%
Value $6.444M Shares 900,000 Est. Cost $9.33 Unrealized
SPRO SPERO THERAPEUTICS INC 0.2%
Value $6.043M Shares 525,000 Est. Cost $12.27 Unrealized -1.9%
BLUEBIRD BIO INC 0.2%
Value $5.978M Shares 47,000 Est. Cost $127.01 Unrealized
INSMED INC 0.2%
Value $5.849M Shares 6,000,000 Est. Cost $0.89 Unrealized
MERSANA THERAPEUTICS INC 0.2%
Value $5.67M Shares 1,400,000 Est. Cost $11.48 Unrealized
ELV ANTHEM INC 0.2%
Value $5.644M Shares 20,000 Est. Cost $263.72 Unrealized -5.3%
AEGLEA BIOTHERAPEUTICS INC 0.2%
Value $5.48M Shares 800,000 Est. Cost $6.36 Unrealized
ARDX ARDELYX INC 0.2%
Value $5.38M Shares 2,000,000 Est. Cost $9.90 Unrealized -69.6%
CORBF GLOBAL CORD BLOOD CORPORATIO 0.2%
Value $5.347M Shares 925,000 Est. Cost $9.99 Unrealized -34.0%
RYTM RHYTHM PHARMACEUTICALS INC 0.2%
Value $5.17M Shares 235,000 Est. Cost $26.89 Unrealized -6.1%
NGM BIOPHARMACEUTICALS INC 0.2%
Value $5.14M Shares 351,100 Est. Cost $14.64 Unrealized
MGNX MACROGENICS INC 0.2%
Value $5.091M Shares 300,000 Est. Cost $20.97 Unrealized -18.1%
GAMIDA CELL LTD 0.2%
Value $5.08M Shares 1,000,000 Est. Cost $5.08 Unrealized
MEDICINES CO 0.2%
Value $5.026M Shares 5,000,000 Est. Cost $1.05 Unrealized
MOMENTA PHARMACEUTICALS INC 0.2%
Value $4.98M Shares 400,000 Est. Cost $19.06 Unrealized
CHIASMA INC 0.2%
Value $4.856M Shares 650,000 Est. Cost $16.07 Unrealized
ALDER BIOPHARMACEUTICALS INC 0.2%
Value $4.672M Shares 5,000,000 Est. Cost $0.93 Unrealized
ACRS ACLARIS THERAPEUTICS INC 0.2%
Value $4.441M Shares 2,028,000 Est. Cost $12.82 Unrealized -57.5%
AKERO THERAPEUTICS INC 0.2%
Value $4.309M Shares 225,000 Est. Cost $19.15 Unrealized
CGEN COMPUGEN LTD 0.2%
Value $4.224M Shares 1,100,000 Est. Cost $5.48 Unrealized -35.4%
RESTORBIO INC 0.1%
Value $4.08M Shares 400,000 Est. Cost $11.32 Unrealized
MYOVANT SCIENCES LTD 0.1%
Value $4.073M Shares 450,000 Est. Cost $14.19 Unrealized
INTERCEPT PHARMACEUTICALS IN 0.1%
Value $3.979M Shares 50,000 Est. Cost $79.58 Unrealized
LA JOLLA PHARMACEUTICAL CO 0.1%
Value $3.931M Shares 425,000 Est. Cost $21.31 Unrealized
NABRIVA THERAPEUTICS PLC 0.1%
Value $3.888M Shares 1,600,000 Est. Cost $5.28 Unrealized
CLOVIS ONCOLOGY INC 0.1%
Value $3.807M Shares 256,000 Est. Cost $53.62 Unrealized
MEDICINES CO 0.1%
Value $3.618M Shares 3,000,000 Est. Cost $1.14 Unrealized
ADAPY ADAPTIMMUNE THERAPEUTICS PLC 0.1%
Value $3.518M Shares 875,000 Est. Cost $13.74 Unrealized
ARVN ARVINAS INC 0.1%
Value $3.299M Shares 150,000 Est. Cost $16.46 Unrealized +27.7%
FIVE PRIME THERAPEUTICS INC 0.1%
Value $3.172M Shares 526,100 Est. Cost $22.40 Unrealized
DYNAVAX TECHNOLOGIES CORP 0.1%
Value $2.594M Shares 650,000 Est. Cost $12.35 Unrealized
CORREVIO PHARMA CORP 0.1%
Value $2.592M Shares 1,200,000 Est. Cost $3.78 Unrealized
PARATEK PHARMACEUTICALS INC 0.1%
Value $1.796M Shares 450,000 Est. Cost $15.77 Unrealized
CRVS CORVUS PHARMACEUTICALS INC 0.1%
Value $1.496M Shares 400,000 Est. Cost $13.05 Unrealized -70.0%
RADIUS HEALTH INC 0.0%
Value $1.361M Shares 1,500,000 Est. Cost $1.01 Unrealized
NEUROCRINE BIOSCIENCES INC 0.0%
Value $1.317M Shares 1,000,000 Est. Cost $1.45 Unrealized
THERAVANCE BIOPHARMA INC 0.0%
Value $1.29M Shares 1,500,000 Est. Cost $1.14 Unrealized
KLDO KALEIDO BIOSCIENCES INC 0.0%
Value $1.161M Shares 100,050 Est. Cost $13.76 Unrealized +5.8%
PACIRA BIOSCIENCES 0.0%
Value $1.026M Shares 1,000,000 Est. Cost $0.91 Unrealized
NVAX NOVAVAX INC 0.0%
Value $952K Shares 162,500 Est. Cost $7.87 Unrealized 0.0%
DERMIRA INC 0.0%
Value $865K Shares 1,000,000 Est. Cost $0.83 Unrealized
COVETRUS INC 0.0%
Value $788K Shares 32,231 Est. Cost $31.85 Unrealized
HRTX HERON THERAPEUTICS INC 0.0%
Value $558K Shares 30,000 Est. Cost $20.50 Unrealized -2.6%
PROTEOSTASIS THERAPEUTICS IN 0.0%
Value $390K Shares 400,000 Est. Cost $3.24 Unrealized