Rock Springs Capital Management LP Diversified Active

CIK: 0001595725 · Show all filings

Period: Q1 2020 (← Previous) (Next →)

Filing Date: May 15, 2020

Total Value ($000): $2,418,471 (99.1% shares, 0.9% debt)

Holdings (131)

NBIX NEUROCRINE BIOSCIENCES INC 4.8%
Value ($000) $116,799 Shares 1,349,500 Est. Cost $67.56 Unrealized +44.9%
ISRG INTUITIVE SURGICAL INC 3.1%
Value ($000) $75,520 Shares 152,500 Est. Cost $105.96 Unrealized +72.9%
UNH UNITEDHEALTH GROUP INC 3.1%
Value ($000) $74,814 Shares 300,000 Est. Cost $164.29 Unrealized +52.0%
BIIB BIOGEN INC 2.4%
Value ($000) $56,948 Shares 180,000 Est. Cost $303.47 Unrealized 0.0%
IRTC IRHYTHM TECHNOLOGIES INC 2.2%
Value ($000) $52,471 Shares 645,000 Est. Cost $54.86 Unrealized +51.2%
BAX BAXTER INTL INC 2.2%
Value ($000) $52,368 Shares 645,000 Est. Cost $64.04 Unrealized +19.8%
EHC ENCOMPASS HEALTH CORP 2.2%
Value ($000) $52,184 Shares 815,000 Est. Cost $45.89 Unrealized +17.1%
HUM HUMANA INC 2.0%
Value ($000) $49,458 Shares 157,500 Est. Cost $300.46 Unrealized +6.5%
PODD INSULET CORP 2.0%
Value ($000) $48,379 Shares 292,000 Est. Cost $113.26 Unrealized +61.3%
HCA HCA HEALTHCARE INC 1.9%
Value ($000) $46,722 Shares 520,000 Est. Cost $96.09 Unrealized +28.4%
CNC CENTENE CORP DEL 1.8%
Value ($000) $44,558 Shares 750,000 Est. Cost $57.01 Unrealized +6.4%
ACAD ACADIA PHARMACEUTICALS INC 1.8%
Value ($000) $43,306 Shares 1,025,000 Est. Cost $40.30 Unrealized +2.2%
BLUEPRINT MEDICINES CORP 1.8%
Value ($000) $43,100 Shares 737,000 Est. Cost $67.22 Unrealized
FORTY SEVEN INC 1.8%
Value ($000) $42,691 Shares 447,400 Est. Cost $39.37 Unrealized
ALNY ALNYLAM PHARMACEUTICALS INC 1.7%
Value ($000) $41,526 Shares 381,500 Est. Cost $85.91 Unrealized +34.4%
ZLAB ZAI LAB LTD 1.6%
Value ($000) $38,610 Shares 750,000 Est. Cost $33.35 Unrealized
TFX TELEFLEX INCORPORATED 1.6%
Value ($000) $38,072 Shares 130,000 Est. Cost $242.14 Unrealized +39.0%
AGIO AGIOS PHARMACEUTICALS INC 1.5%
Value ($000) $37,449 Shares 1,055,500 Est. Cost $44.78 Unrealized +3.2%
EW EDWARDS LIFESCIENCES CORP 1.5%
Value ($000) $36,592 Shares 194,000 Est. Cost $35.81 Unrealized +101.4%
PEN PENUMBRA INC 1.5%
Value ($000) $36,299 Shares 225,000 Est. Cost $55.16 Unrealized +205.4%
BSX BOSTON SCIENTIFIC CORP 1.5%
Value ($000) $35,893 Shares 1,100,000 Est. Cost $35.85 Unrealized +9.0%
NEVRO CORP 1.4%
Value ($000) $34,593 Shares 346,000 Est. Cost $79.84 Unrealized
GLPG GALAPAGOS NV 1.4%
Value ($000) $34,286 Shares 175,000 Est. Cost $55.87 Unrealized
SRPT SAREPTA THERAPEUTICS INC 1.4%
Value ($000) $33,797 Shares 345,500 Est. Cost $54.43 Unrealized +110.0%
RARE ULTRAGENYX PHARMACEUTICAL IN 1.4%
Value ($000) $33,225 Shares 747,800 Est. Cost $55.19 Unrealized -5.9%
ARGX ARGENX SE 1.3%
Value ($000) $32,603 Shares 247,500 Est. Cost $103.80 Unrealized
BMRN BIOMARIN PHARMACEUTICAL INC 1.3%
Value ($000) $32,110 Shares 380,000 Est. Cost $85.57 Unrealized +0.7%
CHRS COHERUS BIOSCIENCES INC 1.3%
Value ($000) $31,629 Shares 1,950,000 Est. Cost $18.76 Unrealized -1.5%
EPIZYME INC 1.3%
Value ($000) $30,322 Shares 1,955,000 Est. Cost $14.96 Unrealized
IDXX IDEXX LABS INC 1.3%
Value ($000) $30,280 Shares 125,000 Est. Cost $200.51 Unrealized +30.2%
PCRX PACIRA BIOSCIENCES 1.2%
Value ($000) $30,177 Shares 900,000 Est. Cost $47.44 Unrealized -12.4%
VRTX VERTEX PHARMACEUTICALS INC 1.2%
Value ($000) $29,744 Shares 125,000 Est. Cost $117.87 Unrealized +94.6%
SEATTLE GENETICS INC 1.2%
Value ($000) $27,922 Shares 242,000 Est. Cost $59.37 Unrealized
APPLIED THERAPEUTICS INC 1.1%
Value ($000) $27,646 Shares 845,700 Est. Cost $32.56 Unrealized
ARDX ARDELYX INC 1.1%
Value ($000) $27,572 Shares 4,850,000 Est. Cost $7.09 Unrealized -4.1%
ONC BEIGENE LTD 1.1%
Value ($000) $26,444 Shares 214,800 Est. Cost $33.43 Unrealized
MIRATI THERAPEUTICS INC 1.1%
Value ($000) $26,251 Shares 341,500 Est. Cost $62.27 Unrealized
AMGN AMGEN INC 1.1%
Value ($000) $25,544 Shares 126,000 Est. Cost $158.01 Unrealized +15.3%
FRPT FRESHPET INC 1.0%
Value ($000) $25,388 Shares 397,500 Est. Cost $41.22 Unrealized +55.8%
CI CIGNA CORP NEW 1.0%
Value ($000) $24,982 Shares 141,000 Est. Cost $164.99 Unrealized +7.5%
EXAS EXACT SCIENCES CORP 1.0%
Value ($000) $24,592 Shares 424,000 Est. Cost $31.16 Unrealized +160.5%
ASND ASCENDIS PHARMA A S 1.0%
Value ($000) $24,042 Shares 213,500 Est. Cost $18.03 Unrealized
ASSEMBLY BIOSCIENCES INC 0.9%
Value ($000) $22,245 Shares 1,500,000 Est. Cost $14.17 Unrealized
ALGN ALIGN TECHNOLOGY INC 0.9%
Value ($000) $22,179 Shares 127,500 Est. Cost $204.09 Unrealized +17.3%
COLL COLLEGIUM PHARMACEUTICAL INC 0.8%
Value ($000) $19,188 Shares 1,175,000 Est. Cost $15.97 Unrealized +29.2%
QURE UNIQURE NV 0.8%
Value ($000) $18,980 Shares 400,000 Est. Cost $56.26 Unrealized +2.1%
AMARIN CORP PLC 0.8%
Value ($000) $18,600 Shares 4,650,000 Est. Cost $4.95 Unrealized
INCY INCYTE CORP 0.8%
Value ($000) $18,308 Shares 250,000 Est. Cost $68.12 Unrealized +10.9%
MIRM MIRUM PHARMACEUTICALS INC 0.7%
Value ($000) $17,402 Shares 1,243,000 Est. Cost $11.68 Unrealized +40.5%
APREA THERAPEUTICS INC 0.7%
Value ($000) $17,380 Shares 500,000 Est. Cost $45.89 Unrealized
TBPH THERAVANCE BIOPHARMA INC 0.7%
Value ($000) $17,333 Shares 750,000 Est. Cost $20.64 Unrealized +21.3%
MDGL MADRIGAL PHARMACEUTICALS INC 0.7%
Value ($000) $16,690 Shares 250,000 Est. Cost $39.27 Unrealized +112.2%
ACHC ACADIA HEALTHCARE COMPANY IN 0.7%
Value ($000) $16,515 Shares 900,000 Est. Cost $44.80 Unrealized -36.1%
INVITAE CORP 0.7%
Value ($000) $15,721 Shares 1,150,000 Est. Cost $10.51 Unrealized
HQY HEALTHEQUITY INC 0.6%
Value ($000) $15,430 Shares 305,000 Est. Cost $63.70 Unrealized +4.2%
ADPT ADAPTIVE BIOTECHNOLOGIES COR 0.6%
Value ($000) $15,140 Shares 545,000 Est. Cost $44.30 Unrealized -37.0%
GLOBAL BLOOD THERAPEUTICS IN 0.6%
Value ($000) $14,305 Shares 280,000 Est. Cost $39.14 Unrealized
IMMUNOMEDICS INC 0.6%
Value ($000) $14,154 Shares 1,050,000 Est. Cost $17.31 Unrealized
DECIPHERA PHARMACEUTICALS IN 0.6%
Value ($000) $13,792 Shares 335,000 Est. Cost $45.47 Unrealized
JNJ JOHNSON & JOHNSON 0.6%
Value ($000) $13,769 Shares 105,000 Est. Cost $113.68 Unrealized +5.7%
GH GUARDANT HEALTH INC 0.5%
Value ($000) $13,224 Shares 190,000 Est. Cost $38.92 Unrealized +97.2%
KARUNA THERAPEUTICS INC 0.5%
Value ($000) $12,960 Shares 180,000 Est. Cost $20.02 Unrealized
RADIUS HEALTH INC 0.5%
Value ($000) $12,675 Shares 975,000 Est. Cost $37.04 Unrealized
PORTOLA PHARMACEUTICALS INC 0.5%
Value ($000) $12,491 Shares 1,751,900 Est. Cost $23.61 Unrealized
INSP INSPIRE MED SYS INC 0.5%
Value ($000) $12,056 Shares 200,000 Est. Cost $74.00 Unrealized 0.0%
PHR PHREESIA INC 0.5%
Value ($000) $11,882 Shares 565,000 Est. Cost $26.83 Unrealized +2.2%
ODONATE THERAPEUTICS INC 0.5%
Value ($000) $11,872 Shares 430,000 Est. Cost $24.20 Unrealized
NVCR NOVOCURE LTD 0.5%
Value ($000) $11,785 Shares 175,000 Est. Cost $37.58 Unrealized +110.3%
ARVN ARVINAS INC 0.5%
Value ($000) $11,486 Shares 285,000 Est. Cost $24.68 Unrealized +89.5%
HCAT HEALTH CATALYST INC 0.5%
Value ($000) $11,114 Shares 425,000 Est. Cost $33.35 Unrealized -8.4%
MOMENTA PHARMACEUTICALS INC 0.4%
Value ($000) $10,880 Shares 400,000 Est. Cost $19.06 Unrealized
WST WEST PHARMACEUTICAL SVSC INC 0.4%
Value ($000) $10,810 Shares 71,000 Est. Cost $96.51 Unrealized +57.2%
FIBROGEN INC 0.4%
Value ($000) $10,634 Shares 306,000 Est. Cost $29.90 Unrealized
CYTOKINETICS INC 0.4%
Value ($000) $10,573 Shares 8,000,000 Est. Cost $1.32 Unrealized
ALLAKOS INC 0.4%
Value ($000) $10,455 Shares 235,000 Est. Cost $44.99 Unrealized
CNMD CONMED CORP 0.4%
Value ($000) $10,309 Shares 180,000 Est. Cost $87.51 Unrealized 0.0%
ZOGENIX INC 0.4%
Value ($000) $9,892 Shares 400,000 Est. Cost $33.27 Unrealized
FOLD AMICUS THERAPEUTICS INC 0.4%
Value ($000) $9,240 Shares 1,000,000 Est. Cost $11.48 Unrealized -17.2%
RIGEL PHARMACEUTICALS INC 0.4%
Value ($000) $8,580 Shares 5,500,000 Est. Cost $2.95 Unrealized
RETROPHIN INC 0.3%
Value ($000) $8,389 Shares 575,000 Est. Cost $22.85 Unrealized
TRANSLATE BIO INC 0.3%
Value ($000) $8,225 Shares 825,000 Est. Cost $12.61 Unrealized
PPD INC 0.3%
Value ($000) $8,015 Shares 450,000 Est. Cost $17.81 Unrealized
CGEN COMPUGEN LTD 0.3%
Value ($000) $7,986 Shares 1,100,000 Est. Cost $5.48 Unrealized +43.4%
MYOKARDIA INC 0.3%
Value ($000) $7,735 Shares 165,000 Est. Cost $72.10 Unrealized
RYTM RHYTHM PHARMACEUTICALS INC 0.3%
Value ($000) $7,610 Shares 500,000 Est. Cost $22.97 Unrealized -22.1%
CONSTELLATION PHARMCETICLS I 0.3%
Value ($000) $7,339 Shares 233,500 Est. Cost $47.11 Unrealized
MERSANA THERAPEUTICS INC 0.3%
Value ($000) $7,188 Shares 1,233,000 Est. Cost $11.48 Unrealized
IMARA INC 0.3%
Value ($000) $7,148 Shares 445,936 Est. Cost $16.03 Unrealized
BIOHAVEN PHARMACTL HLDG CO L 0.3%
Value ($000) $6,806 Shares 200,000 Est. Cost $31.69 Unrealized
HOMOLOGY MEDICINES INC 0.3%
Value ($000) $6,605 Shares 425,000 Est. Cost $18.81 Unrealized
INTERSECT ENT INC 0.2%
Value ($000) $5,925 Shares 500,000 Est. Cost $24.99 Unrealized
XENE XENON PHARMACEUTICALS INC 0.2%
Value ($000) $5,670 Shares 500,000 Est. Cost $14.24 Unrealized 0.0%
DYNAVAX TECHNOLOGIES CORP 0.2%
Value ($000) $5,560 Shares 1,575,000 Est. Cost $6.66 Unrealized
PRTA PROTHENA CORP PLC 0.2%
Value ($000) $5,350 Shares 500,000 Est. Cost $12.11 Unrealized 0.0%
INSMED INC 0.2%
Value ($000) $5,040 Shares 6,000,000 Est. Cost $0.89 Unrealized
STAA STAAR SURGICAL CO 0.2%
Value ($000) $5,000 Shares 155,000 Est. Cost $33.70 Unrealized 0.0%
TMO THERMO FISHER SCIENTIFIC INC 0.2%
Value ($000) $4,963 Shares 17,500 Est. Cost $165.72 Unrealized +87.4%
CHIASMA INC 0.2%
Value ($000) $4,928 Shares 1,350,000 Est. Cost $10.12 Unrealized
SPRO SPERO THERAPEUTICS INC 0.2%
Value ($000) $4,888 Shares 605,000 Est. Cost $11.82 Unrealized -25.4%
ALLO ALLOGENE THERAPEUTICS INC 0.2%
Value ($000) $4,860 Shares 250,000 Est. Cost $23.82 Unrealized 0.0%
PARATEK PHARMACEUTICALS INC 0.2%
Value ($000) $4,808 Shares 1,526,310 Est. Cost $6.25 Unrealized
AKERO THERAPEUTICS INC 0.2%
Value ($000) $4,770 Shares 225,000 Est. Cost $19.15 Unrealized
GRTX GALERA THERAPEUTICS INC 0.2%
Value ($000) $4,750 Shares 500,000 Est. Cost $12.19 Unrealized +5.7%
TXG 10X GENOMICS INC 0.2%
Value ($000) $4,736 Shares 76,000 Est. Cost $56.95 Unrealized +37.0%
NGM BIOPHARMACEUTICALS INC 0.2%
Value ($000) $4,329 Shares 351,100 Est. Cost $14.64 Unrealized
OSW ONESPAWORLD HOLDINGS LIMITED 0.2%
Value ($000) $4,263 Shares 1,050,000 Est. Cost $14.98 Unrealized -20.8%
ANAB ANAPTYSBIO INC 0.2%
Value ($000) $4,239 Shares 300,000 Est. Cost $30.70 Unrealized -50.6%
IMVT IMMUNOVANT INC 0.2%
Value ($000) $3,891 Shares 250,000 Est. Cost $15.04 Unrealized 0.0%
MYOVANT SCIENCES LTD 0.2%
Value ($000) $3,775 Shares 500,000 Est. Cost $14.33 Unrealized
AEGLEA BIOTHERAPEUTICS INC 0.2%
Value ($000) $3,728 Shares 800,000 Est. Cost $6.36 Unrealized
PHASEBIO PHARMACEUTICALS INC 0.2%
Value ($000) $3,724 Shares 1,125,000 Est. Cost $6.46 Unrealized
PASSAGE BIO INC 0.1%
Value ($000) $3,544 Shares 225,000 Est. Cost $15.75 Unrealized
OBSEVA SA 0.1%
Value ($000) $3,374 Shares 1,400,000 Est. Cost $7.26 Unrealized
ADAPY ADAPTIMMUNE THERAPEUTICS PLC 0.1%
Value ($000) $3,264 Shares 1,200,000 Est. Cost $10.07 Unrealized
AXONICS MODULATION TECHNOLOG 0.1%
Value ($000) $3,176 Shares 125,000 Est. Cost $25.39 Unrealized
TRILLIUM THERAPEUTICS INC 0.1%
Value ($000) $3,030 Shares 750,000 Est. Cost $4.04 Unrealized
GAMIDA CELL LTD 0.1%
Value ($000) $3,020 Shares 1,000,000 Est. Cost $5.08 Unrealized
CORBF GLOBAL CORD BLOOD CORPORATIO 0.1%
Value ($000) $2,942 Shares 925,000 Est. Cost $9.99 Unrealized -56.2%
GW PHARMACEUTICALS PLC 0.1%
Value ($000) $2,627 Shares 30,000 Est. Cost $87.57 Unrealized
RETROPHIN INC 0.1%
Value ($000) $2,566 Shares 3,250,000 Est. Cost $0.79 Unrealized
ACRS ACLARIS THERAPEUTICS INC 0.1%
Value ($000) $1,664 Shares 1,600,000 Est. Cost $9.19 Unrealized -85.2%
ACCELERON PHARMA INC 0.1%
Value ($000) $1,573 Shares 17,500 Est. Cost $89.89 Unrealized
THERAVANCE BIOPHARMA INC 0.1%
Value ($000) $1,448 Shares 1,500,000 Est. Cost $1.14 Unrealized
MGNX MACROGENICS INC 0.1%
Value ($000) $1,339 Shares 230,000 Est. Cost $20.97 Unrealized -56.7%
NEUROCRINE BIOSCIENCES INC 0.1%
Value ($000) $1,287 Shares 1,000,000 Est. Cost $1.45 Unrealized
RADIUS HEALTH INC 0.0%
Value ($000) $1,067 Shares 1,500,000 Est. Cost $1.01 Unrealized
PACIRA BIOSCIENCES 0.0%
Value ($000) $966 Shares 1,000,000 Est. Cost $0.91 Unrealized
FIVE PRIME THERAPEUTICS INC 0.0%
Value ($000) $908 Shares 400,000 Est. Cost $16.45 Unrealized
BRISTOL-MYERS SQUIBB CO 0.0%
Value ($000) $704 Shares 185,150 Est. Cost $3.01 Unrealized
NABRIVA THERAPEUTICS PLC 0.0%
Value ($000) $604 Shares 1,050,000 Est. Cost $4.28 Unrealized
COVETRUS INC 0.0%
Value ($000) $168 Shares 20,683 Est. Cost $31.85 Unrealized