Rock Springs Capital Management LP Diversified Active

CIK: 0001595725 · Show all filings

Period: Q1 2018 (← Previous) (Next →)

Filing Date: May 15, 2018

Total Value ($000): $2,344,209 (98.9% shares, 1.1% debt)

Holdings (149)

UNH UNITEDHEALTH GROUP INC 4.5%
Value ($000) $104,325 Shares 487,500 Est. Cost $151.47 Unrealized +32.8%
ISRG INTUITIVE SURGICAL INC 2.5%
Value ($000) $59,406 Shares 143,900 Est. Cost $101.20 Unrealized +37.9%
ABBV ABBVIE INC 2.4%
Value ($000) $56,790 Shares 600,000 Est. Cost $78.53 Unrealized 0.0%
ALEXION PHARMACEUTICALS INC 2.3%
Value ($000) $54,058 Shares 485,000 Est. Cost $138.77 Unrealized
NBIX NEUROCRINE BIOSCIENCES INC 2.1%
Value ($000) $50,272 Shares 606,200 Est. Cost $37.82 Unrealized +123.3%
ACHC ACADIA HEALTHCARE COMPANY IN 2.1%
Value ($000) $49,112 Shares 1,253,500 Est. Cost $55.43 Unrealized -33.8%
COLL COLLEGIUM PHARMACEUTICAL INC 2.1%
Value ($000) $49,056 Shares 1,920,000 Est. Cost $15.97 Unrealized +49.2%
MOH MOLINA HEALTHCARE INC 2.0%
Value ($000) $46,760 Shares 576,000 Est. Cost $65.41 Unrealized +23.0%
SPARK THERAPEUTICS INC 1.8%
Value ($000) $41,519 Shares 623,500 Est. Cost $58.20 Unrealized
BMY BRISTOL MYERS SQUIBB CO 1.8%
Value ($000) $41,113 Shares 650,000 Est. Cost $47.70 Unrealized +0.8%
GW PHARMACEUTICALS PLC 1.7%
Value ($000) $40,561 Shares 360,000 Est. Cost $95.03 Unrealized
AETNA INC NEW 1.7%
Value ($000) $40,391 Shares 239,000 Est. Cost $124.56 Unrealized
MDGL MADRIGAL PHARMACEUTICALS INC 1.6%
Value ($000) $38,015 Shares 325,500 Est. Cost $23.28 Unrealized +430.2%
ONC BEIGENE LTD 1.6%
Value ($000) $37,170 Shares 221,250 Est. Cost $33.43 Unrealized
HCA HCA HEALTHCARE INC 1.6%
Value ($000) $36,860 Shares 380,000 Est. Cost $90.31 Unrealized 0.0%
LOXO ONCOLOGY INC 1.6%
Value ($000) $36,515 Shares 316,500 Est. Cost $59.62 Unrealized
RADIUS HEALTH INC 1.5%
Value ($000) $35,940 Shares 1,000,000 Est. Cost $43.95 Unrealized
PCRX PACIRA PHARMACEUTICALS INC 1.5%
Value ($000) $35,044 Shares 1,125,000 Est. Cost $48.64 Unrealized -26.8%
PRA HEALTH SCIENCES INC 1.4%
Value ($000) $32,769 Shares 395,000 Est. Cost $42.95 Unrealized
TESARO INC 1.4%
Value ($000) $32,741 Shares 573,000 Est. Cost $65.29 Unrealized
IRTC IRHYTHM TECHNOLOGIES INC 1.3%
Value ($000) $30,059 Shares 477,500 Est. Cost $48.06 Unrealized +28.8%
VRTX VERTEX PHARMACEUTICALS INC 1.3%
Value ($000) $29,499 Shares 181,000 Est. Cost $111.95 Unrealized +45.9%
SYK STRYKER CORP 1.2%
Value ($000) $28,644 Shares 178,000 Est. Cost $141.99 Unrealized +4.2%
PEN PENUMBRA INC 1.2%
Value ($000) $28,103 Shares 243,000 Est. Cost $48.06 Unrealized +114.9%
PBYI PUMA BIOTECHNOLOGY INC 1.2%
Value ($000) $28,098 Shares 412,900 Est. Cost $77.81 Unrealized -3.8%
CELGENE CORP 1.2%
Value ($000) $27,664 Shares 310,100 Est. Cost $117.55 Unrealized
DVA DAVITA INC 1.1%
Value ($000) $26,871 Shares 407,500 Est. Cost $71.11 Unrealized +3.3%
EW EDWARDS LIFESCIENCES CORP 1.1%
Value ($000) $26,509 Shares 190,001 Est. Cost $31.99 Unrealized +35.7%
WELLCARE HEALTH PLANS INC 1.1%
Value ($000) $25,946 Shares 134,000 Est. Cost $79.73 Unrealized
COR AMERISOURCEBERGEN CORP 1.1%
Value ($000) $25,432 Shares 295,000 Est. Cost $73.93 Unrealized 0.0%
TMO THERMO FISHER SCIENTIFIC INC 1.0%
Value ($000) $23,640 Shares 114,500 Est. Cost $165.72 Unrealized +24.0%
GILD GILEAD SCIENCES INC 1.0%
Value ($000) $23,627 Shares 313,400 Est. Cost $54.83 Unrealized +7.5%
TFX TELEFLEX INC 1.0%
Value ($000) $23,586 Shares 92,500 Est. Cost $239.92 Unrealized +4.7%
AVEXIS INC 1.0%
Value ($000) $23,480 Shares 190,000 Est. Cost $44.96 Unrealized
MEDICINES CO 1.0%
Value ($000) $22,729 Shares 690,000 Est. Cost $33.00 Unrealized
EPIZYME INC 1.0%
Value ($000) $22,631 Shares 1,275,000 Est. Cost $16.49 Unrealized
ASSEMBLY BIOSCIENCES INC 0.9%
Value ($000) $21,769 Shares 443,000 Est. Cost $16.69 Unrealized
MERSANA THERAPEUTICS INC 0.9%
Value ($000) $20,501 Shares 1,300,000 Est. Cost $13.97 Unrealized
WRIGHT MED GROUP N V 0.8%
Value ($000) $19,840 Shares 1,000,000 Est. Cost $22.12 Unrealized
ALDER BIOPHARMACEUTICALS INC 0.8%
Value ($000) $19,428 Shares 1,529,800 Est. Cost $13.78 Unrealized
BAX BAXTER INTL INC 0.8%
Value ($000) $19,317 Shares 297,000 Est. Cost $51.31 Unrealized +14.8%
SRPT SAREPTA THERAPEUTICS INC 0.8%
Value ($000) $19,115 Shares 258,000 Est. Cost $32.85 Unrealized +103.0%
EHC ENCOMPASS HEALTH CORP 0.8%
Value ($000) $18,695 Shares 327,000 Est. Cost $38.63 Unrealized 0.0%
JAZZ JAZZ PHARMACEUTICALS PLC 0.8%
Value ($000) $18,677 Shares 123,700 Est. Cost $146.27 Unrealized +0.3%
INSM INSMED INC 0.8%
Value ($000) $18,579 Shares 825,000 Est. Cost $19.73 Unrealized +33.4%
ASND ASCENDIS PHARMA A S 0.8%
Value ($000) $18,541 Shares 283,500 Est. Cost $18.03 Unrealized
GLPG GALAPAGOS NV 0.8%
Value ($000) $18,456 Shares 185,000 Est. Cost $50.00 Unrealized
AXGN AXOGEN INC 0.8%
Value ($000) $18,433 Shares 505,000 Est. Cost $16.14 Unrealized +90.1%
ALNY ALNYLAM PHARMACEUTICALS INC 0.7%
Value ($000) $17,031 Shares 143,000 Est. Cost $80.61 Unrealized +59.9%
AUDENTES THERAPEUTICS INC 0.7%
Value ($000) $16,978 Shares 565,000 Est. Cost $18.85 Unrealized
ALGN ALIGN TECHNOLOGY INC 0.7%
Value ($000) $16,449 Shares 65,500 Est. Cost $163.51 Unrealized +57.1%
INTERSECT ENT INC 0.7%
Value ($000) $16,113 Shares 410,000 Est. Cost $27.86 Unrealized
ZBH ZIMMER BIOMET HLDGS INC 0.7%
Value ($000) $16,083 Shares 147,500 Est. Cost $105.47 Unrealized +3.2%
NUVASIVE INC 0.7%
Value ($000) $15,924 Shares 305,000 Est. Cost $52.21 Unrealized
TBPH THERAVANCE BIOPHARMA INC 0.7%
Value ($000) $15,826 Shares 652,600 Est. Cost $20.11 Unrealized +36.6%
INCY INCYTE CORP 0.6%
Value ($000) $15,208 Shares 182,500 Est. Cost $67.79 Unrealized +33.0%
FOLD AMICUS THERAPEUTICS INC 0.6%
Value ($000) $15,040 Shares 1,000,000 Est. Cost $11.48 Unrealized +32.6%
HOLX HOLOGIC INC 0.6%
Value ($000) $14,944 Shares 400,000 Est. Cost $39.97 Unrealized +1.1%
EXAS EXACT SCIENCES CORP 0.6%
Value ($000) $14,942 Shares 370,500 Est. Cost $20.61 Unrealized +136.7%
ARENA PHARMACEUTICALS INC 0.6%
Value ($000) $14,813 Shares 375,000 Est. Cost $31.48 Unrealized
BIIB BIOGEN INC 0.6%
Value ($000) $14,512 Shares 53,000 Est. Cost $273.10 Unrealized +13.7%
BLUEPRINT MEDICINES CORP 0.6%
Value ($000) $14,466 Shares 157,753 Est. Cost $73.42 Unrealized
FIBROGEN INC 0.6%
Value ($000) $14,299 Shares 309,500 Est. Cost $29.90 Unrealized
ANAB ANAPTYSBIO INC 0.6%
Value ($000) $14,051 Shares 135,000 Est. Cost $26.97 Unrealized +317.8%
INGN INOGEN INC 0.6%
Value ($000) $13,574 Shares 110,500 Est. Cost $113.42 Unrealized +7.6%
HRTX HERON THERAPEUTICS INC 0.6%
Value ($000) $13,138 Shares 476,000 Est. Cost $19.33 Unrealized +17.3%
MENLO THERAPEUTICS INC 0.5%
Value ($000) $12,401 Shares 330,000 Est. Cost $37.58 Unrealized
CLOVIS ONCOLOGY INC 0.5%
Value ($000) $12,223 Shares 231,500 Est. Cost $56.13 Unrealized
IDXX IDEXX LABS INC 0.5%
Value ($000) $12,058 Shares 63,000 Est. Cost $184.56 Unrealized 0.0%
AMARIN CORP PLC 0.5%
Value ($000) $12,040 Shares 4,000,000 Est. Cost $3.19 Unrealized
PRTA PROTHENA CORP PLC 0.5%
Value ($000) $11,692 Shares 318,500 Est. Cost $29.47 Unrealized +23.4%
ARDX ARDELYX INC 0.5%
Value ($000) $11,492 Shares 2,275,557 Est. Cost $10.47 Unrealized -40.4%
OBSEVA SA 0.5%
Value ($000) $11,332 Shares 840,000 Est. Cost $10.41 Unrealized
HOMOLOGY MEDICINES INC 0.5%
Value ($000) $10,753 Shares 575,000 Est. Cost $18.70 Unrealized
G1 THERAPEUTICS INC 0.5%
Value ($000) $10,633 Shares 287,000 Est. Cost $22.39 Unrealized
PORTOLA PHARMACEUTICALS INC 0.5%
Value ($000) $10,575 Shares 323,800 Est. Cost $54.95 Unrealized
CLEARSIDE BIOMEDICAL INC 0.4%
Value ($000) $10,462 Shares 975,000 Est. Cost $7.16 Unrealized
BMRN BIOMARIN PHARMACEUTICAL INC 0.4%
Value ($000) $10,134 Shares 125,000 Est. Cost $100.37 Unrealized -14.5%
FIVE PRIME THERAPEUTICS INC 0.4%
Value ($000) $10,059 Shares 585,500 Est. Cost $23.18 Unrealized
ADAPY ADAPTIMMUNE THERAPEUTICS PLC 0.4%
Value ($000) $9,826 Shares 875,000 Est. Cost $15.34 Unrealized
ACRS ACLARIS THERAPEUTICS INC 0.4%
Value ($000) $9,286 Shares 530,000 Est. Cost $20.17 Unrealized +5.1%
RIGEL PHARMACEUTICALS INC 0.4%
Value ($000) $9,116 Shares 2,575,000 Est. Cost $3.42 Unrealized
ZOGENIX INC 0.4%
Value ($000) $9,031 Shares 225,500 Est. Cost $37.83 Unrealized
CORBF GLOBAL CORD BLOOD CORPORATIO 0.4%
Value ($000) $8,976 Shares 880,000 Est. Cost $10.11 Unrealized 0.0%
RTI SURGICAL INC 0.4%
Value ($000) $8,970 Shares 1,950,000 Est. Cost $4.35 Unrealized
RETROPHIN INC 0.4%
Value ($000) $8,944 Shares 400,000 Est. Cost $23.91 Unrealized
RARE ULTRAGENYX PHARMACEUTICAL IN 0.4%
Value ($000) $8,821 Shares 173,000 Est. Cost $61.13 Unrealized -17.6%
ZTS ZOETIS INC 0.4%
Value ($000) $8,435 Shares 101,000 Est. Cost $74.07 Unrealized 0.0%
BIOHAVEN PHARMACTL HLDG CO L 0.4%
Value ($000) $8,372 Shares 325,000 Est. Cost $25.19 Unrealized
ACHILLION PHARMACEUTICALS IN 0.4%
Value ($000) $8,348 Shares 2,250,000 Est. Cost $7.47 Unrealized
ODONATE THERAPEUTICS INC 0.3%
Value ($000) $8,123 Shares 383,500 Est. Cost $25.00 Unrealized
SAGE THERAPEUTICS INC 0.3%
Value ($000) $7,892 Shares 49,000 Est. Cost $96.49 Unrealized
BLUEBIRD BIO INC 0.3%
Value ($000) $7,684 Shares 45,000 Est. Cost $123.84 Unrealized
CHRS COHERUS BIOSCIENCES INC 0.3%
Value ($000) $7,680 Shares 695,000 Est. Cost $21.31 Unrealized -48.7%
SPRO SPERO THERAPEUTICS INC 0.3%
Value ($000) $7,481 Shares 525,000 Est. Cost $12.27 Unrealized -1.2%
GLOBAL BLOOD THERAPEUTICS IN 0.3%
Value ($000) $7,245 Shares 150,000 Est. Cost $34.94 Unrealized
MGNX MACROGENICS INC 0.3%
Value ($000) $6,919 Shares 275,000 Est. Cost $30.95 Unrealized -21.5%
CRVS CORVUS PHARMACEUTICALS INC 0.3%
Value ($000) $6,630 Shares 575,000 Est. Cost $13.05 Unrealized -27.5%
IMMUNOMEDICS INC 0.3%
Value ($000) $6,575 Shares 450,000 Est. Cost $14.61 Unrealized
INVITAE CORP 0.3%
Value ($000) $6,566 Shares 1,400,000 Est. Cost $10.13 Unrealized
LA JOLLA PHARMACEUTICAL CO 0.3%
Value ($000) $6,552 Shares 220,000 Est. Cost $29.78 Unrealized
CYMABAY THERAPEUTICS INC 0.3%
Value ($000) $6,365 Shares 490,000 Est. Cost $8.46 Unrealized
ZLAB ZAI LAB LTD 0.3%
Value ($000) $6,298 Shares 295,000 Est. Cost $27.00 Unrealized
GTX INC DEL 0.3%
Value ($000) $6,284 Shares 354,000 Est. Cost $17.75 Unrealized
MYOVANT SCIENCES LTD 0.3%
Value ($000) $6,277 Shares 295,100 Est. Cost $13.79 Unrealized
MOMENTA PHARMACEUTICALS INC 0.3%
Value ($000) $6,262 Shares 345,000 Est. Cost $18.15 Unrealized
ENDOCYTE INC 0.3%
Value ($000) $6,136 Shares 675,000 Est. Cost $9.09 Unrealized
A AGILENT TECHNOLOGIES INC 0.3%
Value ($000) $6,121 Shares 91,500 Est. Cost $66.14 Unrealized 0.0%
PARATEK PHARMACEUTICALS INC 0.2%
Value ($000) $5,850 Shares 450,000 Est. Cost $15.77 Unrealized
MIRATI THERAPEUTICS INC 0.2%
Value ($000) $5,802 Shares 189,000 Est. Cost $18.84 Unrealized
NOVAVAX INC 0.2%
Value ($000) $5,775 Shares 2,750,000 Est. Cost $2.75 Unrealized
THERAPEUTICSMD INC 0.2%
Value ($000) $5,712 Shares 1,172,800 Est. Cost $7.12 Unrealized
SHIRE PLC 0.2%
Value ($000) $5,602 Shares 37,500 Est. Cost $149.39 Unrealized
INSMED INC 0.2%
Value ($000) $5,358 Shares 6,000,000 Est. Cost $0.89 Unrealized
CLEMENTIA PHARMACEUTICALS IN 0.2%
Value ($000) $5,227 Shares 345,000 Est. Cost $16.89 Unrealized
ADVERUM BIOTECHNOLOGIES INC 0.2%
Value ($000) $5,220 Shares 900,000 Est. Cost $5.80 Unrealized
AEGLEA BIOTHERAPEUTICS INC 0.2%
Value ($000) $5,199 Shares 524,089 Est. Cost $4.86 Unrealized
AIMMUNE THERAPEUTICS INC 0.2%
Value ($000) $5,093 Shares 160,000 Est. Cost $22.58 Unrealized
DYNAVAX TECHNOLOGIES CORP 0.2%
Value ($000) $4,982 Shares 251,000 Est. Cost $22.57 Unrealized
PRTA PROTHENA CORP PLC 0.2%
Value ($000) $4,956 Shares 135,000 Est. Cost $29.47 Unrealized +23.4%
MEDICINES CO 0.2%
Value ($000) $4,820 Shares 5,000,000 Est. Cost $1.05 Unrealized
DERMIRA INC 0.2%
Value ($000) $4,794 Shares 600,000 Est. Cost $17.84 Unrealized
ALDER BIOPHARMACEUTICALS INC 0.2%
Value ($000) $4,626 Shares 5,000,000 Est. Cost $0.93 Unrealized
BCRX BIOCRYST PHARMACEUTICALS 0.2%
Value ($000) $4,412 Shares 925,000 Est. Cost $5.01 Unrealized +2.5%
INTRA CELLULAR THERAPIES INC 0.2%
Value ($000) $3,947 Shares 187,500 Est. Cost $39.54 Unrealized
EXEL EXELIXIS INC 0.2%
Value ($000) $3,876 Shares 175,000 Est. Cost $11.85 Unrealized +133.3%
CGEN COMPUGEN LTD 0.2%
Value ($000) $3,671 Shares 825,000 Est. Cost $6.07 Unrealized -44.5%
MEDICINES CO 0.1%
Value ($000) $3,462 Shares 3,000,000 Est. Cost $1.14 Unrealized
MERUS N V 0.1%
Value ($000) $3,241 Shares 174,917 Est. Cost $9.33 Unrealized
PROTEOSTASIS THERAPEUTICS IN 0.1%
Value ($000) $3,206 Shares 675,000 Est. Cost $8.68 Unrealized
RA PHARMACEUTICALS INC 0.1%
Value ($000) $3,186 Shares 600,000 Est. Cost $15.19 Unrealized
EGALET CORP 0.1%
Value ($000) $3,159 Shares 7,800,000 Est. Cost $0.76 Unrealized
NABRIVA THERAPEUTICS PLC 0.1%
Value ($000) $3,144 Shares 625,000 Est. Cost $10.11 Unrealized
ALLERGAN PLC 0.1%
Value ($000) $2,973 Shares 17,665 Est. Cost $168.30 Unrealized
CARDIOME PHARMA CORP 0.1%
Value ($000) $2,784 Shares 1,200,000 Est. Cost $8.88 Unrealized
RESTORBIO INC 0.1%
Value ($000) $2,635 Shares 275,000 Est. Cost $9.58 Unrealized
DBV TECHNOLOGIES S A 0.1%
Value ($000) $1,684 Shares 73,000 Est. Cost $33.59 Unrealized
SERES THERAPEUTICS INC 0.1%
Value ($000) $1,615 Shares 220,000 Est. Cost $38.95 Unrealized
THERAVANCE BIOPHARMA INC 0.1%
Value ($000) $1,515 Shares 1,500,000 Est. Cost $1.14 Unrealized
RADIUS HEALTH INC 0.1%
Value ($000) $1,512 Shares 1,500,000 Est. Cost $1.01 Unrealized
RYTM RHYTHM PHARMACEUTICALS INC 0.1%
Value ($000) $1,423 Shares 71,500 Est. Cost $26.40 Unrealized +0.6%
CIDARA THERAPEUTICS INC 0.1%
Value ($000) $1,200 Shares 300,000 Est. Cost $13.32 Unrealized
SCYNEXIS INC 0.0%
Value ($000) $1,099 Shares 820,000 Est. Cost $6.33 Unrealized
WRIGHT MED GROUP INC 0.0%
Value ($000) $1,001 Shares 1,000,000 Est. Cost $0.90 Unrealized
SOLID BIOSCIENCES INC 0.0%
Value ($000) $938 Shares 125,000 Est. Cost $7.50 Unrealized
PACIRA PHARMACEUTICALS INC 0.0%
Value ($000) $912 Shares 1,000,000 Est. Cost $0.91 Unrealized
CHIASMA INC 0.0%
Value ($000) $788 Shares 525,000 Est. Cost $18.65 Unrealized
INFIQ INFINITY PHARMACEUTICALS INC 0.0%
Value ($000) $567 Shares 270,000 Est. Cost $11.28 Unrealized -81.0%
KURA KURA ONCOLOGY INC 0.0%
Value ($000) $497 Shares 26,500 Est. Cost $19.47 Unrealized 0.0%