Rock Springs Capital Management LP Diversified Active

CIK: 0001595725 · Show all filings

Period: Q1 2019 (← Previous) (Next →)

Filing Date: May 15, 2019

Total Value ($000): $2,593,735 (99.1% shares, 0.9% debt)

Holdings (131)

UNH UNITEDHEALTH GROUP INC 5.6%
Value ($000) $146,131 Shares 591,000 Est. Cost $164.29 Unrealized +38.6%
GW PHARMACEUTICALS PLC 4.5%
Value ($000) $117,999 Shares 700,000 Est. Cost $110.88 Unrealized
AMARIN CORP PLC 3.6%
Value ($000) $93,939 Shares 4,525,000 Est. Cost $4.67 Unrealized
ISRG INTUITIVE SURGICAL INC 3.4%
Value ($000) $87,013 Shares 152,500 Est. Cost $105.96 Unrealized +67.7%
WELLCARE HEALTH PLANS INC 3.3%
Value ($000) $86,320 Shares 320,000 Est. Cost $187.33 Unrealized
NBIX NEUROCRINE BIOSCIENCES INC 2.9%
Value ($000) $74,400 Shares 844,500 Est. Cost $53.50 Unrealized +56.2%
SPARK THERAPEUTICS INC 2.4%
Value ($000) $61,211 Shares 537,500 Est. Cost $58.20 Unrealized
HCA HCA HEALTHCARE INC 2.3%
Value ($000) $59,323 Shares 455,000 Est. Cost $92.21 Unrealized +37.2%
PCRX PACIRA PHARMACEUTICALS INC 1.8%
Value ($000) $47,575 Shares 1,250,000 Est. Cost $47.44 Unrealized -17.7%
EHC ENCOMPASS HEALTH CORP 1.8%
Value ($000) $46,720 Shares 800,000 Est. Cost $45.88 Unrealized +1.1%
RARE ULTRAGENYX PHARMACEUTICAL IN 1.6%
Value ($000) $40,229 Shares 580,000 Est. Cost $57.71 Unrealized -1.0%
SRPT SAREPTA THERAPEUTICS INC 1.5%
Value ($000) $39,869 Shares 334,500 Est. Cost $50.84 Unrealized +152.9%
TFX TELEFLEX INC 1.5%
Value ($000) $39,281 Shares 130,000 Est. Cost $242.14 Unrealized +10.6%
IRTC IRHYTHM TECHNOLOGIES INC 1.4%
Value ($000) $37,451 Shares 499,615 Est. Cost $49.38 Unrealized +73.1%
VRTX VERTEX PHARMACEUTICALS INC 1.4%
Value ($000) $37,342 Shares 203,000 Est. Cost $117.87 Unrealized +56.7%
BSX BOSTON SCIENTIFIC CORP 1.4%
Value ($000) $37,229 Shares 970,000 Est. Cost $34.42 Unrealized +11.0%
SYK STRYKER CORP 1.4%
Value ($000) $35,356 Shares 179,000 Est. Cost $141.99 Unrealized +17.7%
EW EDWARDS LIFESCIENCES CORP 1.4%
Value ($000) $35,109 Shares 183,500 Est. Cost $33.73 Unrealized +69.2%
EXAS EXACT SCIENCES CORP 1.3%
Value ($000) $34,388 Shares 397,000 Est. Cost $23.92 Unrealized +255.9%
PEN PENUMBRA INC 1.3%
Value ($000) $33,077 Shares 225,000 Est. Cost $48.06 Unrealized +197.4%
ALEXION PHARMACEUTICALS INC 1.3%
Value ($000) $32,781 Shares 242,500 Est. Cost $138.55 Unrealized
MDGL MADRIGAL PHARMACEUTICALS INC 1.2%
Value ($000) $31,973 Shares 255,250 Est. Cost $35.98 Unrealized +245.5%
PORTOLA PHARMACEUTICALS INC 1.2%
Value ($000) $30,363 Shares 875,000 Est. Cost $41.64 Unrealized
ALGN ALIGN TECHNOLOGY INC 1.2%
Value ($000) $29,855 Shares 105,000 Est. Cost $198.28 Unrealized +20.4%
MOH MOLINA HEALTHCARE INC 1.1%
Value ($000) $29,457 Shares 207,500 Est. Cost $65.41 Unrealized +106.8%
WRIGHT MED GROUP N V 1.1%
Value ($000) $28,953 Shares 920,608 Est. Cost $22.12 Unrealized
ONC BEIGENE LTD 1.1%
Value ($000) $28,354 Shares 214,800 Est. Cost $33.43 Unrealized
ACHC ACADIA HEALTHCARE COMPANY IN 1.0%
Value ($000) $27,112 Shares 925,000 Est. Cost $50.20 Unrealized -43.6%
INVITAE CORP 1.0%
Value ($000) $26,933 Shares 1,150,000 Est. Cost $10.13 Unrealized
IDXX IDEXX LABS INC 1.0%
Value ($000) $26,877 Shares 120,200 Est. Cost $198.10 Unrealized +4.2%
INCY INCYTE CORP 1.0%
Value ($000) $26,861 Shares 312,300 Est. Cost $68.12 Unrealized +19.4%
PRA HEALTH SCIENCES INC 1.0%
Value ($000) $26,470 Shares 240,000 Est. Cost $54.18 Unrealized
ASND ASCENDIS PHARMA A S 1.0%
Value ($000) $25,129 Shares 213,500 Est. Cost $18.03 Unrealized
INSM INSMED INC 1.0%
Value ($000) $24,710 Shares 850,000 Est. Cost $19.94 Unrealized +30.0%
BAX BAXTER INTL INC 0.9%
Value ($000) $24,450 Shares 300,700 Est. Cost $51.40 Unrealized +24.6%
COLL COLLEGIUM PHARMACEUTICAL INC 0.9%
Value ($000) $23,889 Shares 1,577,893 Est. Cost $15.97 Unrealized +0.3%
RADIUS HEALTH INC 0.9%
Value ($000) $23,430 Shares 1,175,000 Est. Cost $38.33 Unrealized
BIIB BIOGEN INC 0.9%
Value ($000) $23,047 Shares 97,500 Est. Cost $273.10 Unrealized +15.3%
ARGX ARGENX SE 0.9%
Value ($000) $22,683 Shares 181,700 Est. Cost $83.26 Unrealized
TMO THERMO FISHER SCIENTIFIC INC 0.9%
Value ($000) $22,171 Shares 81,000 Est. Cost $165.72 Unrealized +47.5%
BLUEPRINT MEDICINES CORP 0.8%
Value ($000) $22,014 Shares 275,000 Est. Cost $72.43 Unrealized
ALNY ALNYLAM PHARMACEUTICALS INC 0.8%
Value ($000) $21,821 Shares 233,500 Est. Cost $85.46 Unrealized -2.1%
EPIZYME INC 0.8%
Value ($000) $21,724 Shares 1,753,375 Est. Cost $13.99 Unrealized
ALDER BIOPHARMACEUTICALS INC 0.8%
Value ($000) $21,294 Shares 1,560,000 Est. Cost $13.92 Unrealized
COVETRUS INC 0.8%
Value ($000) $20,703 Shares 650,000 Est. Cost $31.85 Unrealized
AUDENTES THERAPEUTICS INC 0.8%
Value ($000) $20,388 Shares 522,500 Est. Cost $20.08 Unrealized
MEDICINES CO 0.8%
Value ($000) $20,387 Shares 729,400 Est. Cost $32.29 Unrealized
GLPG GALAPAGOS NV 0.7%
Value ($000) $19,434 Shares 165,000 Est. Cost $50.00 Unrealized
RETROPHIN INC 0.7%
Value ($000) $18,783 Shares 830,000 Est. Cost $23.25 Unrealized
RA PHARMACEUTICALS INC 0.7%
Value ($000) $18,010 Shares 804,000 Est. Cost $14.70 Unrealized
PBYI PUMA BIOTECHNOLOGY INC 0.7%
Value ($000) $17,766 Shares 458,000 Est. Cost $74.54 Unrealized -59.0%
SEATTLE GENETICS INC 0.7%
Value ($000) $17,724 Shares 242,000 Est. Cost $59.37 Unrealized
CELGENE CORP 0.7%
Value ($000) $17,467 Shares 185,150 Est. Cost $112.23 Unrealized
FIBROGEN INC 0.6%
Value ($000) $16,631 Shares 306,000 Est. Cost $29.90 Unrealized
ALLAKOS INC 0.6%
Value ($000) $16,362 Shares 404,000 Est. Cost $44.99 Unrealized
IMMUNOMEDICS INC 0.6%
Value ($000) $15,368 Shares 800,000 Est. Cost $17.45 Unrealized
INTERSECT ENT INC 0.6%
Value ($000) $14,950 Shares 465,000 Est. Cost $27.96 Unrealized
SAGE THERAPEUTICS INC 0.6%
Value ($000) $14,712 Shares 92,500 Est. Cost $125.91 Unrealized
A AGILENT TECHNOLOGIES INC 0.6%
Value ($000) $14,693 Shares 182,800 Est. Cost $64.15 Unrealized +12.7%
CI CIGNA CORP NEW 0.6%
Value ($000) $14,474 Shares 90,000 Est. Cost $167.01 Unrealized 0.0%
OBSEVA SA 0.6%
Value ($000) $14,325 Shares 1,120,000 Est. Cost $11.59 Unrealized
GH GUARDANT HEALTH INC 0.5%
Value ($000) $13,806 Shares 180,000 Est. Cost $36.84 Unrealized +50.5%
WST WEST PHARMACEUTICAL SVSC INC 0.5%
Value ($000) $13,775 Shares 125,000 Est. Cost $89.91 Unrealized +13.5%
FOLD AMICUS THERAPEUTICS INC 0.5%
Value ($000) $13,600 Shares 1,000,000 Est. Cost $11.48 Unrealized +6.4%
BIOHAVEN PHARMACTL HLDG CO L 0.5%
Value ($000) $13,382 Shares 260,000 Est. Cost $27.80 Unrealized
MIRATI THERAPEUTICS INC 0.5%
Value ($000) $13,194 Shares 180,000 Est. Cost $33.31 Unrealized
GLOBAL BLOOD THERAPEUTICS IN 0.5%
Value ($000) $12,968 Shares 245,000 Est. Cost $37.31 Unrealized
ZOGENIX INC 0.5%
Value ($000) $12,927 Shares 235,000 Est. Cost $38.28 Unrealized
AXGN AXOGEN INC 0.5%
Value ($000) $12,720 Shares 603,970 Est. Cost $19.50 Unrealized -6.3%
TBPH THERAVANCE BIOPHARMA INC 0.5%
Value ($000) $12,469 Shares 550,000 Est. Cost $20.11 Unrealized +26.1%
ANAB ANAPTYSBIO INC 0.5%
Value ($000) $12,419 Shares 170,000 Est. Cost $43.60 Unrealized +58.3%
ZLAB ZAI LAB LTD 0.5%
Value ($000) $12,199 Shares 413,400 Est. Cost $26.43 Unrealized
BMRN BIOMARIN PHARMACEUTICAL INC 0.5%
Value ($000) $11,992 Shares 135,000 Est. Cost $99.87 Unrealized -7.2%
RTI SURGICAL HOLDINGS INC 0.5%
Value ($000) $11,720 Shares 1,950,000 Est. Cost $4.35 Unrealized
PHASEBIO PHARMACEUTICALS INC 0.4%
Value ($000) $10,841 Shares 1,140,000 Est. Cost $4.81 Unrealized
RIGEL PHARMACEUTICALS INC 0.4%
Value ($000) $10,794 Shares 4,200,000 Est. Cost $3.20 Unrealized
DERMIRA INC 0.4%
Value ($000) $10,501 Shares 775,000 Est. Cost $16.41 Unrealized
TRANSLATE BIO INC 0.4%
Value ($000) $10,284 Shares 1,009,179 Est. Cost $12.65 Unrealized
HOMOLOGY MEDICINES INC 0.4%
Value ($000) $10,260 Shares 370,000 Est. Cost $18.70 Unrealized
ACRS ACLARIS THERAPEUTICS INC 0.4%
Value ($000) $10,183 Shares 1,700,000 Est. Cost $14.24 Unrealized -53.5%
FRPT FRESHPET INC 0.4%
Value ($000) $9,938 Shares 235,000 Est. Cost $34.80 Unrealized +10.6%
ODONATE THERAPEUTICS INC 0.4%
Value ($000) $9,839 Shares 445,000 Est. Cost $24.20 Unrealized
AXONICS MODULATION TECH INC 0.4%
Value ($000) $9,580 Shares 400,000 Est. Cost $15.11 Unrealized
CYMABAY THERAPEUTICS INC 0.4%
Value ($000) $9,495 Shares 715,000 Est. Cost $9.89 Unrealized
NVCR NOVOCURE LTD 0.4%
Value ($000) $9,393 Shares 195,000 Est. Cost $36.98 Unrealized +30.1%
CHRS COHERUS BIOSCIENCES INC 0.4%
Value ($000) $9,139 Shares 670,000 Est. Cost $21.31 Unrealized -37.4%
ASSEMBLY BIOSCIENCES INC 0.3%
Value ($000) $8,861 Shares 450,000 Est. Cost $18.68 Unrealized
HRTX HERON THERAPEUTICS INC 0.3%
Value ($000) $8,554 Shares 350,000 Est. Cost $20.50 Unrealized +27.7%
IFRX INFLARX NV 0.3%
Value ($000) $8,503 Shares 225,000 Est. Cost $32.15 Unrealized +15.9%
MYOVANT SCIENCES LTD 0.3%
Value ($000) $8,295 Shares 347,500 Est. Cost $15.71 Unrealized
ACHILLION PHARMACEUTICALS IN 0.3%
Value ($000) $7,992 Shares 2,700,000 Est. Cost $6.61 Unrealized
AGIO AGIOS PHARMACEUTICALS INC 0.3%
Value ($000) $7,924 Shares 117,500 Est. Cost $58.25 Unrealized 0.0%
MERSANA THERAPEUTICS INC 0.3%
Value ($000) $7,364 Shares 1,400,000 Est. Cost $11.48 Unrealized
CLEMENTIA PHARMACEUTICALS IN 0.3%
Value ($000) $7,178 Shares 275,000 Est. Cost $16.89 Unrealized
BLUEBIRD BIO INC 0.3%
Value ($000) $7,080 Shares 45,000 Est. Cost $127.00 Unrealized
FIVE PRIME THERAPEUTICS INC 0.3%
Value ($000) $6,767 Shares 505,000 Est. Cost $23.08 Unrealized
SPRO SPERO THERAPEUTICS INC 0.3%
Value ($000) $6,725 Shares 525,000 Est. Cost $12.27 Unrealized -13.6%
CORBF GLOBAL CORD BLOOD CORPORATIO 0.3%
Value ($000) $6,494 Shares 925,000 Est. Cost $9.99 Unrealized -33.8%
AEGLEA BIOTHERAPEUTICS INC 0.2%
Value ($000) $6,440 Shares 800,000 Est. Cost $6.36 Unrealized
CLOVIS ONCOLOGY INC 0.2%
Value ($000) $6,354 Shares 256,000 Est. Cost $53.62 Unrealized
INSMED INC 0.2%
Value ($000) $6,082 Shares 6,000,000 Est. Cost $0.89 Unrealized
RYTM RHYTHM PHARMACEUTICALS INC 0.2%
Value ($000) $5,934 Shares 216,500 Est. Cost $27.03 Unrealized +6.3%
MOMENTA PHARMACEUTICALS INC 0.2%
Value ($000) $5,812 Shares 400,000 Est. Cost $19.06 Unrealized
ELV ANTHEM INC 0.2%
Value ($000) $5,740 Shares 20,000 Est. Cost $263.72 Unrealized 0.0%
BCRX BIOCRYST PHARMACEUTICALS 0.2%
Value ($000) $5,698 Shares 700,000 Est. Cost $6.11 Unrealized +40.2%
ARDX ARDELYX INC 0.2%
Value ($000) $5,600 Shares 2,000,000 Est. Cost $9.90 Unrealized -73.7%
MGNX MACROGENICS INC 0.2%
Value ($000) $5,394 Shares 300,000 Est. Cost $20.97 Unrealized -17.6%
ALDER BIOPHARMACEUTICALS INC 0.2%
Value ($000) $4,798 Shares 5,000,000 Est. Cost $0.93 Unrealized
CGEN COMPUGEN LTD 0.2%
Value ($000) $4,554 Shares 1,100,000 Est. Cost $5.48 Unrealized -37.4%
MEDICINES CO 0.2%
Value ($000) $4,231 Shares 5,000,000 Est. Cost $1.05 Unrealized
NABRIVA THERAPEUTICS PLC 0.2%
Value ($000) $3,904 Shares 1,600,000 Est. Cost $5.28 Unrealized
CORREVIO PHARMA CORP 0.1%
Value ($000) $3,792 Shares 1,200,000 Est. Cost $3.78 Unrealized
ADAPY ADAPTIMMUNE THERAPEUTICS PLC 0.1%
Value ($000) $3,440 Shares 800,000 Est. Cost $14.65 Unrealized
CHIASMA INC 0.1%
Value ($000) $3,380 Shares 650,000 Est. Cost $16.07 Unrealized
MEDICINES CO 0.1%
Value ($000) $3,013 Shares 3,000,000 Est. Cost $1.14 Unrealized
DYNAVAX TECHNOLOGIES CORP 0.1%
Value ($000) $2,778 Shares 380,000 Est. Cost $18.29 Unrealized
RESTORBIO INC 0.1%
Value ($000) $2,728 Shares 400,000 Est. Cost $11.32 Unrealized
PARATEK PHARMACEUTICALS INC 0.1%
Value ($000) $2,412 Shares 450,000 Est. Cost $15.77 Unrealized
ARVN ARVINAS INC 0.1%
Value ($000) $2,214 Shares 150,000 Est. Cost $16.46 Unrealized +7.8%
NEVRO CORP 0.1%
Value ($000) $2,169 Shares 34,700 Est. Cost $62.51 Unrealized
NOVAVAX INC 0.1%
Value ($000) $1,790 Shares 3,250,000 Est. Cost $2.53 Unrealized
LA JOLLA PHARMACEUTICAL CO 0.1%
Value ($000) $1,783 Shares 277,236 Est. Cost $27.74 Unrealized
CRVS CORVUS PHARMACEUTICALS INC 0.1%
Value ($000) $1,608 Shares 400,000 Est. Cost $13.05 Unrealized -67.7%
THERAVANCE BIOPHARMA INC 0.1%
Value ($000) $1,457 Shares 1,500,000 Est. Cost $1.14 Unrealized
KLDO KALEIDO BIOSCIENCES INC 0.1%
Value ($000) $1,451 Shares 100,050 Est. Cost $13.76 Unrealized 0.0%
NEUROCRINE BIOSCIENCES INC 0.1%
Value ($000) $1,354 Shares 1,000,000 Est. Cost $1.45 Unrealized
RADIUS HEALTH INC 0.0%
Value ($000) $1,249 Shares 1,500,000 Est. Cost $1.01 Unrealized
PACIRA PHARMACEUTICALS INC 0.0%
Value ($000) $987 Shares 1,000,000 Est. Cost $0.91 Unrealized
DERMIRA INC 0.0%
Value ($000) $888 Shares 1,000,000 Est. Cost $0.83 Unrealized
SOLID BIOSCIENCES INC 0.0%
Value ($000) $552 Shares 60,000 Est. Cost $7.53 Unrealized
PROTEOSTASIS THERAPEUTICS IN 0.0%
Value ($000) $504 Shares 400,000 Est. Cost $3.24 Unrealized