Rock Springs Capital Management LP Diversified Active

CIK: 0001595725 · Show all filings

Period: Q3 2017 (← Previous) (Next →)

Filing Date: Nov 14, 2017

Total Value ($000): $2,167,567 (99.2% shares, 0.8% debt)

Holdings (147)

UNH UNITEDHEALTH GROUP INC 4.1%
Value ($000) $89,895 Shares 459,000 Est. Cost $149.36 Unrealized +13.1%
ALEXION PHARMACEUTICALS INC 3.0%
Value ($000) $64,954 Shares 463,000 Est. Cost $139.77 Unrealized
TESARO INC 2.9%
Value ($000) $63,937 Shares 495,250 Est. Cost $63.80 Unrealized
AETNA INC NEW 2.9%
Value ($000) $63,445 Shares 399,000 Est. Cost $124.56 Unrealized
ACHC ACADIA HEALTHCARE COMPANY IN 2.9%
Value ($000) $62,327 Shares 1,305,000 Est. Cost $55.43 Unrealized -12.1%
SPARK THERAPEUTICS INC 2.5%
Value ($000) $53,229 Shares 597,000 Est. Cost $58.29 Unrealized
ADVANCED ACCELERATOR APPLIC 2.4%
Value ($000) $53,048 Shares 784,500 Est. Cost $31.31 Unrealized
CIGNA CORPORATION 2.3%
Value ($000) $50,474 Shares 270,000 Est. Cost $118.36 Unrealized
ISRG INTUITIVE SURGICAL INC 2.3%
Value ($000) $50,202 Shares 48,000 Est. Cost $53.34 Unrealized +104.3%
MRK MERCK & CO INC 2.2%
Value ($000) $48,535 Shares 758,000 Est. Cost $43.84 Unrealized +6.5%
PCRX PACIRA PHARMACEUTICALS INC 1.9%
Value ($000) $40,854 Shares 1,088,000 Est. Cost $49.01 Unrealized -17.9%
PBYI PUMA BIOTECHNOLOGY INC 1.8%
Value ($000) $39,518 Shares 330,000 Est. Cost $73.67 Unrealized +26.2%
CELGENE CORP 1.8%
Value ($000) $38,278 Shares 262,500 Est. Cost $120.35 Unrealized
GW PHARMACEUTICALS PLC 1.7%
Value ($000) $37,856 Shares 373,000 Est. Cost $94.73 Unrealized
PRA HEALTH SCIENCES INC 1.7%
Value ($000) $36,371 Shares 477,500 Est. Cost $42.95 Unrealized
RADIUS HEALTH INC 1.7%
Value ($000) $36,353 Shares 943,000 Est. Cost $44.43 Unrealized
WELLCARE HEALTH PLANS INC 1.6%
Value ($000) $33,919 Shares 197,500 Est. Cost $79.73 Unrealized
MOH MOLINA HEALTHCARE INC 1.3%
Value ($000) $29,051 Shares 422,500 Est. Cost $62.77 Unrealized +3.7%
ONC BEIGENE LTD 1.3%
Value ($000) $28,969 Shares 280,000 Est. Cost $33.43 Unrealized
PEN PENUMBRA INC 1.3%
Value ($000) $28,038 Shares 310,500 Est. Cost $48.06 Unrealized +79.2%
NBIX NEUROCRINE BIOSCIENCES INC 1.2%
Value ($000) $26,963 Shares 440,000 Est. Cost $21.90 Unrealized +140.9%
LOXO ONCOLOGY INC 1.2%
Value ($000) $26,300 Shares 285,500 Est. Cost $56.24 Unrealized
EPIZYME INC 1.2%
Value ($000) $25,718 Shares 1,350,000 Est. Cost $16.49 Unrealized
MEDICINES CO 1.2%
Value ($000) $25,558 Shares 690,000 Est. Cost $33.00 Unrealized
GILD GILEAD SCIENCES INC 1.2%
Value ($000) $25,392 Shares 313,400 Est. Cost $54.83 Unrealized +2.0%
VRTX VERTEX PHARMACEUTICALS INC 1.1%
Value ($000) $23,034 Shares 151,500 Est. Cost $103.94 Unrealized +44.8%
MERSANA THERAPEUTICS INC 1.1%
Value ($000) $22,996 Shares 1,330,000 Est. Cost $13.97 Unrealized
JNJ JOHNSON & JOHNSON 1.0%
Value ($000) $22,752 Shares 175,000 Est. Cost $93.39 Unrealized +12.4%
TBPH THERAVANCE BIOPHARMA INC 1.0%
Value ($000) $22,064 Shares 644,400 Est. Cost $19.99 Unrealized +63.6%
GLPG GALAPAGOS NV 1.0%
Value ($000) $21,775 Shares 214,000 Est. Cost $50.00 Unrealized
TMO THERMO FISHER SCIENTIFIC INC 1.0%
Value ($000) $20,812 Shares 110,000 Est. Cost $164.09 Unrealized +7.9%
EW EDWARDS LIFESCIENCES CORP 1.0%
Value ($000) $20,769 Shares 190,001 Est. Cost $31.99 Unrealized +19.2%
EXAS EXACT SCIENCES CORP 1.0%
Value ($000) $20,610 Shares 437,400 Est. Cost $20.61 Unrealized +95.3%
INSM INSMED INC 0.9%
Value ($000) $20,287 Shares 650,000 Est. Cost $17.46 Unrealized +9.1%
INCY INCYTE CORP 0.9%
Value ($000) $20,196 Shares 173,000 Est. Cost $65.77 Unrealized +92.4%
PRTA PROTHENA CORP PLC 0.9%
Value ($000) $20,046 Shares 309,500 Est. Cost $29.28 Unrealized +109.2%
IRTC IRHYTHM TECHNOLOGIES INC 0.9%
Value ($000) $20,026 Shares 386,000 Est. Cost $45.28 Unrealized 0.0%
ALMOST FAMILY INC 0.9%
Value ($000) $19,439 Shares 362,000 Est. Cost $53.54 Unrealized
DHR DANAHER CORP DEL 0.9%
Value ($000) $19,301 Shares 225,000 Est. Cost $68.57 Unrealized +3.7%
MDT MEDTRONIC PLC 0.9%
Value ($000) $19,237 Shares 247,364 Est. Cost $67.64 Unrealized -1.0%
CLOVIS ONCOLOGY INC 0.9%
Value ($000) $19,076 Shares 231,500 Est. Cost $56.13 Unrealized
COLL COLLEGIUM PHARMACEUTICAL INC 0.9%
Value ($000) $18,934 Shares 1,805,000 Est. Cost $15.90 Unrealized -30.6%
BARD C R INC 0.9%
Value ($000) $18,429 Shares 57,500 Est. Cost $316.10 Unrealized
JAZZ JAZZ PHARMACEUTICALS PLC 0.8%
Value ($000) $18,091 Shares 123,700 Est. Cost $146.27 Unrealized +3.4%
WTW WILLIS TOWERS WATSON PUB LTD 0.8%
Value ($000) $17,736 Shares 115,000 Est. Cost $110.38 Unrealized +20.4%
PORTOLA PHARMACEUTICALS INC 0.8%
Value ($000) $17,495 Shares 323,800 Est. Cost $54.95 Unrealized
FIBROGEN INC 0.8%
Value ($000) $17,485 Shares 325,000 Est. Cost $29.90 Unrealized
WRIGHT MED GROUP N V 0.8%
Value ($000) $17,333 Shares 670,000 Est. Cost $23.14 Unrealized
AVEXIS INC 0.8%
Value ($000) $16,928 Shares 175,000 Est. Cost $38.23 Unrealized
BIIB BIOGEN INC 0.8%
Value ($000) $16,595 Shares 53,000 Est. Cost $273.10 Unrealized +8.4%
AUDENTES THERAPEUTICS INC 0.7%
Value ($000) $14,705 Shares 525,000 Est. Cost $18.00 Unrealized
BAX BAXTER INTL INC 0.7%
Value ($000) $14,433 Shares 230,000 Est. Cost $49.09 Unrealized +9.0%
AMARIN CORP PLC 0.6%
Value ($000) $14,000 Shares 4,000,000 Est. Cost $3.19 Unrealized
FOLD AMICUS THERAPEUTICS INC 0.6%
Value ($000) $13,723 Shares 910,000 Est. Cost $11.11 Unrealized +19.1%
ASSEMBLY BIOSCIENCES INC 0.6%
Value ($000) $13,619 Shares 390,000 Est. Cost $12.30 Unrealized
MDGL MADRIGAL PHARMACEUTICALS INC 0.6%
Value ($000) $12,370 Shares 275,000 Est. Cost $15.04 Unrealized +24.5%
ALNY ALNYLAM PHARMACEUTICALS INC 0.6%
Value ($000) $12,336 Shares 105,000 Est. Cost $63.91 Unrealized +33.6%
HEALTHSOUTH CORP 0.6%
Value ($000) $12,283 Shares 265,000 Est. Cost $41.93 Unrealized
INVITAE CORP 0.6%
Value ($000) $12,237 Shares 1,306,000 Est. Cost $10.53 Unrealized
KITE PHARMA INC 0.6%
Value ($000) $12,227 Shares 68,000 Est. Cost $46.24 Unrealized
SRPT SAREPTA THERAPEUTICS INC 0.5%
Value ($000) $11,757 Shares 259,200 Est. Cost $32.85 Unrealized +21.7%
BMRN BIOMARIN PHARMACEUTICAL INC 0.5%
Value ($000) $11,634 Shares 125,000 Est. Cost $100.37 Unrealized -12.0%
ALGN ALIGN TECHNOLOGY INC 0.5%
Value ($000) $11,418 Shares 61,300 Est. Cost $157.85 Unrealized +8.5%
ACRS ACLARIS THERAPEUTICS INC 0.5%
Value ($000) $11,356 Shares 440,000 Est. Cost $19.88 Unrealized +34.8%
PARATEK PHARMACEUTICALS INC 0.5%
Value ($000) $11,295 Shares 450,000 Est. Cost $15.77 Unrealized
ARDX ARDELYX INC 0.5%
Value ($000) $11,200 Shares 2,000,000 Est. Cost $11.10 Unrealized -52.5%
DERMIRA INC 0.5%
Value ($000) $10,800 Shares 400,000 Est. Cost $21.78 Unrealized
INTERSECT ENT INC 0.5%
Value ($000) $10,747 Shares 345,000 Est. Cost $25.70 Unrealized
ALDER BIOPHARMACEUTICALS INC 0.5%
Value ($000) $10,719 Shares 875,000 Est. Cost $14.84 Unrealized
ASND ASCENDIS PHARMA A S 0.5%
Value ($000) $10,150 Shares 280,000 Est. Cost $17.44 Unrealized
JUNO THERAPEUTICS INC 0.5%
Value ($000) $10,094 Shares 225,000 Est. Cost $49.81 Unrealized
RETROPHIN INC 0.5%
Value ($000) $9,956 Shares 400,000 Est. Cost $23.91 Unrealized
CHINA CORD BLOOD CORP 0.5%
Value ($000) $9,786 Shares 880,000 Est. Cost $4.24 Unrealized
ACHILLION PHARMACEUTICALS IN 0.4%
Value ($000) $9,570 Shares 2,131,400 Est. Cost $7.72 Unrealized
NEURODERM LTD 0.4%
Value ($000) $9,247 Shares 237,700 Est. Cost $28.71 Unrealized
BIOHAVEN PHARMACTL HLDG CO L 0.4%
Value ($000) $9,121 Shares 244,000 Est. Cost $25.00 Unrealized
FIVE PRIME THERAPEUTICS INC 0.4%
Value ($000) $8,906 Shares 217,700 Est. Cost $28.80 Unrealized
RTI SURGICAL INC 0.4%
Value ($000) $8,873 Shares 1,950,000 Est. Cost $4.35 Unrealized
RA PHARMACEUTICALS INC 0.4%
Value ($000) $8,760 Shares 600,000 Est. Cost $15.19 Unrealized
RARE ULTRAGENYX PHARMACEUTICAL IN 0.4%
Value ($000) $8,681 Shares 163,000 Est. Cost $61.79 Unrealized -4.1%
CHRS COHERUS BIOSCIENCES INC 0.4%
Value ($000) $8,523 Shares 638,400 Est. Cost $22.39 Unrealized -40.9%
THERAPEUTICSMD INC 0.4%
Value ($000) $8,464 Shares 1,600,000 Est. Cost $7.12 Unrealized
ZLAB ZAI LAB LTD 0.4%
Value ($000) $8,438 Shares 312,500 Est. Cost $27.00 Unrealized
HQY HEALTHEQUITY INC 0.4%
Value ($000) $8,346 Shares 165,000 Est. Cost $44.16 Unrealized +5.4%
CLEARSIDE BIOMEDICAL INC 0.4%
Value ($000) $8,172 Shares 935,000 Est. Cost $7.01 Unrealized
AXGN AXOGEN INC 0.4%
Value ($000) $7,740 Shares 400,000 Est. Cost $13.69 Unrealized +22.7%
AIMMUNE THERAPEUTICS INC 0.3%
Value ($000) $7,263 Shares 293,000 Est. Cost $22.58 Unrealized
ADAPY ADAPTIMMUNE THERAPEUTICS PLC 0.3%
Value ($000) $7,166 Shares 875,000 Est. Cost $15.34 Unrealized
REGN REGENERON PHARMACEUTICALS 0.3%
Value ($000) $7,154 Shares 16,000 Est. Cost $402.85 Unrealized +17.5%
ACAD ACADIA PHARMACEUTICALS INC 0.3%
Value ($000) $6,856 Shares 182,000 Est. Cost $29.92 Unrealized +8.7%
OBSEVA SA 0.3%
Value ($000) $6,838 Shares 840,000 Est. Cost $10.41 Unrealized
SEATTLE GENETICS INC 0.3%
Value ($000) $6,801 Shares 125,000 Est. Cost $52.27 Unrealized
CRVS CORVUS PHARMACEUTICALS INC 0.3%
Value ($000) $6,736 Shares 422,600 Est. Cost $14.35 Unrealized -3.6%
1741046D STERIS PLC 0.3%
Value ($000) $6,542 Shares 74,000 Est. Cost $69.98 Unrealized
TETRAPHASE PHARMACEUTICALS I 0.3%
Value ($000) $6,498 Shares 950,000 Est. Cost $6.12 Unrealized
BLUEPRINT MEDICINES CORP 0.3%
Value ($000) $6,026 Shares 86,500 Est. Cost $69.66 Unrealized
G1 THERAPEUTICS INC 0.3%
Value ($000) $5,974 Shares 240,000 Est. Cost $17.44 Unrealized
CLEMENTIA PHARMACEUTICALS IN 0.3%
Value ($000) $5,827 Shares 345,000 Est. Cost $16.89 Unrealized
ARENA PHARMACEUTICALS INC 0.3%
Value ($000) $5,483 Shares 215,000 Est. Cost $25.50 Unrealized
MERUS N V 0.3%
Value ($000) $5,464 Shares 275,000 Est. Cost $9.33 Unrealized
MEDICINES CO 0.2%
Value ($000) $5,281 Shares 5,000,000 Est. Cost $1.05 Unrealized
ANAB ANAPTYSBIO INC 0.2%
Value ($000) $5,243 Shares 150,000 Est. Cost $26.97 Unrealized 0.0%
NABRIVA THERAPEUTICS PLC 0.2%
Value ($000) $5,119 Shares 625,000 Est. Cost $10.11 Unrealized
BLUEBIRD BIO INC 0.2%
Value ($000) $4,807 Shares 35,000 Est. Cost $108.33 Unrealized
GLOBAL BLOOD THERAPEUTICS IN 0.2%
Value ($000) $4,658 Shares 150,000 Est. Cost $34.94 Unrealized
MYOVANT SCIENCES LTD 0.2%
Value ($000) $4,565 Shares 295,100 Est. Cost $13.79 Unrealized
ADURO BIOTECH INC 0.2%
Value ($000) $4,420 Shares 415,000 Est. Cost $28.61 Unrealized
EXEL EXELIXIS INC 0.2%
Value ($000) $4,240 Shares 175,000 Est. Cost $11.85 Unrealized +124.7%
MGNX MACROGENICS INC 0.2%
Value ($000) $4,158 Shares 225,000 Est. Cost $32.43 Unrealized -46.6%
EGALET CORP 0.2%
Value ($000) $4,051 Shares 7,800,000 Est. Cost $0.76 Unrealized
MEDICINES CO 0.2%
Value ($000) $3,801 Shares 3,000,000 Est. Cost $1.14 Unrealized
AGN 5.5 03/01/18 A ALLERGAN PLC 0.2%
Value ($000) $3,789 Shares 5,000 Est. Cost $1045.60 Unrealized
CYMABAY THERAPEUTICS INC 0.2%
Value ($000) $3,627 Shares 450,000 Est. Cost $8.06 Unrealized
DYNAVAX TECHNOLOGIES CORP 0.2%
Value ($000) $3,548 Shares 165,000 Est. Cost $24.06 Unrealized
SERES THERAPEUTICS INC 0.2%
Value ($000) $3,529 Shares 220,000 Est. Cost $38.95 Unrealized
ZOGENIX INC 0.2%
Value ($000) $3,505 Shares 100,000 Est. Cost $35.05 Unrealized
BMY BRISTOL MYERS SQUIBB CO 0.1%
Value ($000) $3,187 Shares 50,000 Est. Cost $42.96 Unrealized +0.4%
IRWD IRONWOOD PHARMACEUTICALS INC 0.1%
Value ($000) $3,154 Shares 200,000 Est. Cost $13.76 Unrealized 0.0%
CGEN COMPUGEN LTD 0.1%
Value ($000) $3,135 Shares 825,000 Est. Cost $6.07 Unrealized -42.8%
DBV TECHNOLOGIES S A 0.1%
Value ($000) $3,098 Shares 73,000 Est. Cost $33.59 Unrealized
INTRA CELLULAR THERAPIES INC 0.1%
Value ($000) $2,959 Shares 187,500 Est. Cost $39.54 Unrealized
AEGLEA BIOTHERAPEUTICS INC 0.1%
Value ($000) $2,584 Shares 524,089 Est. Cost $4.86 Unrealized
CARDIOME PHARMA CORP 0.1%
Value ($000) $2,568 Shares 1,200,000 Est. Cost $8.88 Unrealized
RIGEL PHARMACEUTICALS INC 0.1%
Value ($000) $2,540 Shares 1,000,000 Est. Cost $2.73 Unrealized
ZBH ZIMMER BIOMET HLDGS INC 0.1%
Value ($000) $2,471 Shares 21,100 Est. Cost $99.44 Unrealized +8.4%
CIDARA THERAPEUTICS INC 0.1%
Value ($000) $2,430 Shares 300,000 Est. Cost $13.32 Unrealized
ATYR PHARMA INC 0.1%
Value ($000) $2,399 Shares 475,000 Est. Cost $16.05 Unrealized
BCRX BIOCRYST PHARMACEUTICALS 0.1%
Value ($000) $2,358 Shares 450,000 Est. Cost $5.12 Unrealized 0.0%
SAGE THERAPEUTICS INC 0.1%
Value ($000) $2,025 Shares 32,500 Est. Cost $62.31 Unrealized
THERAVANCE BIOPHARMA INC 0.1%
Value ($000) $1,844 Shares 1,500,000 Est. Cost $1.14 Unrealized
SCYNEXIS INC 0.1%
Value ($000) $1,832 Shares 760,000 Est. Cost $6.72 Unrealized
ALPINE IMMUNE SCIENCES INC 0.1%
Value ($000) $1,740 Shares 150,000 Est. Cost $11.60 Unrealized
MYOKARDIA INC 0.1%
Value ($000) $1,714 Shares 40,000 Est. Cost $42.85 Unrealized
RADIUS HEALTH INC 0.1%
Value ($000) $1,509 Shares 1,500,000 Est. Cost $1.01 Unrealized
DIMENSION THERAPEUTICS INC 0.1%
Value ($000) $1,350 Shares 225,000 Est. Cost $11.28 Unrealized
CHIASMA INC 0.1%
Value ($000) $1,256 Shares 492,500 Est. Cost $19.77 Unrealized
WRIGHT MED GROUP INC 0.1%
Value ($000) $1,086 Shares 1,000,000 Est. Cost $0.90 Unrealized
PROTEOSTASIS THERAPEUTICS IN 0.0%
Value ($000) $945 Shares 450,000 Est. Cost $10.10 Unrealized
NOVAVAX INC 0.0%
Value ($000) $935 Shares 820,000 Est. Cost $5.52 Unrealized
NEWLINK GENETICS CORP 0.0%
Value ($000) $738 Shares 72,500 Est. Cost $22.84 Unrealized
KALA PHARMACEUTICALS INC 0.0%
Value ($000) $571 Shares 25,000 Est. Cost $22.84 Unrealized
TANDEM DIABETES CARE INC 0.0%
Value ($000) $411 Shares 562,500 Est. Cost $13.40 Unrealized
EGALET CORP 0.0%
Value ($000) $384 Shares 300,000 Est. Cost $13.18 Unrealized
INFIQ INFINITY PHARMACEUTICALS INC 0.0%
Value ($000) $359 Shares 270,000 Est. Cost $11.28 Unrealized -89.0%
OREXIGEN THERAPEUTICS INC 0.0%
Value ($000) $350 Shares 165,300 Est. Cost $3.32 Unrealized
DARE BIOSCIENCE INC 0.0%
Value ($000) $195 Shares 62,500 Est. Cost $3.12 Unrealized
ANTH ANTHERA PHARMACEUTICALS INC 0.0%
Value ($000) $155 Shares 107,630 Est. Cost $2.24 Unrealized -36.6%