Rock Springs Capital Management LP Diversified Active

CIK: 0001595725 · Show all filings

Period: Q2 2017 (← Previous) (Next →)

Filing Date: Aug 14, 2017

Total Value ($000): $1,980,252 (99.1% shares, 0.9% debt)

Holdings (149)

TESARO INC 3.5%
Value ($000) $68,601 Shares 490,500 Est. Cost $63.80 Unrealized
ACHC ACADIA HEALTHCARE COMPANY IN 3.4%
Value ($000) $66,663 Shares 1,350,000 Est. Cost $55.43 Unrealized -20.1%
AETNA INC NEW 3.0%
Value ($000) $58,910 Shares 388,000 Est. Cost $123.58 Unrealized
UNH UNITEDHEALTH GROUP INC 2.9%
Value ($000) $58,222 Shares 314,000 Est. Cost $140.32 Unrealized +8.8%
ALEXION PHARMACEUTICALS INC 2.8%
Value ($000) $56,333 Shares 463,000 Est. Cost $139.77 Unrealized
PCRX PACIRA PHARMACEUTICALS INC 2.5%
Value ($000) $49,727 Shares 1,042,500 Est. Cost $49.39 Unrealized -6.1%
MRK MERCK & CO INC 2.5%
Value ($000) $48,580 Shares 758,000 Est. Cost $43.84 Unrealized +6.2%
CIGNA CORPORATION 2.3%
Value ($000) $45,195 Shares 270,000 Est. Cost $118.36 Unrealized
ISRG INTUITIVE SURGICAL INC 2.3%
Value ($000) $44,898 Shares 48,000 Est. Cost $53.34 Unrealized +80.2%
RADIUS HEALTH INC 2.1%
Value ($000) $41,171 Shares 910,250 Est. Cost $44.64 Unrealized
ALLERGAN PLC 1.9%
Value ($000) $37,898 Shares 155,900 Est. Cost $296.87 Unrealized
SPARK THERAPEUTICS INC 1.9%
Value ($000) $37,338 Shares 625,000 Est. Cost $58.29 Unrealized
GW PHARMACEUTICALS PLC 1.9%
Value ($000) $36,641 Shares 365,500 Est. Cost $94.59 Unrealized
MDT MEDTRONIC PLC 1.8%
Value ($000) $35,500 Shares 400,000 Est. Cost $67.64 Unrealized 0.0%
WELLCARE HEALTH PLANS INC 1.8%
Value ($000) $35,463 Shares 197,500 Est. Cost $79.73 Unrealized
PRA HEALTH SCIENCES INC 1.8%
Value ($000) $34,692 Shares 462,500 Est. Cost $41.88 Unrealized
ADVANCED ACCELERATOR APPLIC 1.7%
Value ($000) $32,794 Shares 840,000 Est. Cost $31.31 Unrealized
HUM HUMANA INC 1.6%
Value ($000) $31,882 Shares 132,500 Est. Cost $191.96 Unrealized +9.7%
CELGENE CORP 1.6%
Value ($000) $31,818 Shares 245,000 Est. Cost $118.53 Unrealized
PEN PENUMBRA INC 1.4%
Value ($000) $27,246 Shares 310,500 Est. Cost $48.06 Unrealized +76.7%
MEDICINES CO 1.3%
Value ($000) $26,396 Shares 694,446 Est. Cost $33.00 Unrealized
TBPH THERAVANCE BIOPHARMA INC 1.2%
Value ($000) $23,904 Shares 600,000 Est. Cost $19.05 Unrealized +101.9%
JNJ JOHNSON & JOHNSON 1.2%
Value ($000) $23,151 Shares 175,000 Est. Cost $93.39 Unrealized +7.5%
LOXO ONCOLOGY INC 1.2%
Value ($000) $23,095 Shares 288,000 Est. Cost $56.24 Unrealized
COLL COLLEGIUM PHARMACEUTICAL INC 1.1%
Value ($000) $22,495 Shares 1,798,195 Est. Cost $15.90 Unrealized -37.8%
EW EDWARDS LIFESCIENCES CORP 1.1%
Value ($000) $22,466 Shares 190,001 Est. Cost $31.99 Unrealized +14.1%
ALMOST FAMILY INC 1.1%
Value ($000) $22,317 Shares 362,000 Est. Cost $53.54 Unrealized
GILD GILEAD SCIENCES INC 1.1%
Value ($000) $22,182 Shares 313,400 Est. Cost $54.83 Unrealized -11.9%
INCY INCYTE CORP 1.1%
Value ($000) $21,782 Shares 173,000 Est. Cost $65.77 Unrealized +93.5%
CLOVIS ONCOLOGY INC 1.1%
Value ($000) $21,675 Shares 231,500 Est. Cost $56.13 Unrealized
MERSANA THERAPEUTICS INC 1.1%
Value ($000) $21,345 Shares 1,527,893 Est. Cost $13.97 Unrealized
NBIX NEUROCRINE BIOSCIENCES INC 1.0%
Value ($000) $19,274 Shares 419,000 Est. Cost $20.36 Unrealized +138.3%
JAZZ JAZZ PHARMACEUTICALS PLC 1.0%
Value ($000) $19,235 Shares 123,700 Est. Cost $146.27 Unrealized +4.5%
TMO THERMO FISHER SCIENTIFIC INC 1.0%
Value ($000) $19,192 Shares 110,000 Est. Cost $164.09 Unrealized 0.0%
HOLX HOLOGIC INC 1.0%
Value ($000) $19,060 Shares 420,000 Est. Cost $37.82 Unrealized +16.7%
DHR DANAHER CORP DEL 1.0%
Value ($000) $18,988 Shares 225,000 Est. Cost $68.57 Unrealized +4.7%
WRIGHT MED GROUP N V 0.9%
Value ($000) $18,418 Shares 670,000 Est. Cost $23.14 Unrealized
MOH MOLINA HEALTHCARE INC 0.9%
Value ($000) $18,229 Shares 263,500 Est. Cost $61.36 Unrealized 0.0%
BARD C R INC 0.9%
Value ($000) $18,176 Shares 57,500 Est. Cost $316.10 Unrealized
EPIZYME INC 0.9%
Value ($000) $17,743 Shares 1,175,000 Est. Cost $16.11 Unrealized
AMARIN CORP PLC 0.9%
Value ($000) $17,128 Shares 4,250,000 Est. Cost $3.19 Unrealized
GLPG GALAPAGOS NV 0.9%
Value ($000) $16,949 Shares 221,500 Est. Cost $50.00 Unrealized
PRTA PROTHENA CORP PLC 0.8%
Value ($000) $16,750 Shares 309,500 Est. Cost $29.28 Unrealized +82.0%
VRTX VERTEX PHARMACEUTICALS INC 0.8%
Value ($000) $16,624 Shares 129,000 Est. Cost $95.81 Unrealized +25.6%
PBYI PUMA BIOTECHNOLOGY INC 0.8%
Value ($000) $16,256 Shares 186,000 Est. Cost $58.70 Unrealized -4.7%
WTW WILLIS TOWERS WATSON PUB LTD 0.8%
Value ($000) $16,001 Shares 110,000 Est. Cost $109.36 Unrealized +13.2%
EXAS EXACT SCIENCES CORP 0.8%
Value ($000) $15,474 Shares 437,500 Est. Cost $20.61 Unrealized +49.8%
PARATEK PHARMACEUTICALS INC 0.7%
Value ($000) $14,460 Shares 600,000 Est. Cost $15.77 Unrealized
BIIB BIOGEN INC 0.7%
Value ($000) $14,382 Shares 53,000 Est. Cost $273.10 Unrealized -3.2%
AVEXIS INC 0.7%
Value ($000) $14,378 Shares 175,000 Est. Cost $38.23 Unrealized
BAX BAXTER INTL INC 0.7%
Value ($000) $13,924 Shares 230,000 Est. Cost $49.09 Unrealized 0.0%
HEALTHSOUTH CORP 0.6%
Value ($000) $12,826 Shares 265,000 Est. Cost $41.93 Unrealized
ACRS ACLARIS THERAPEUTICS INC 0.6%
Value ($000) $11,933 Shares 440,000 Est. Cost $19.88 Unrealized +36.7%
ONC BEIGENE LTD 0.6%
Value ($000) $11,925 Shares 265,000 Est. Cost $29.47 Unrealized
INVITAE CORP 0.6%
Value ($000) $11,472 Shares 1,200,000 Est. Cost $10.63 Unrealized
RTI SURGICAL INC 0.6%
Value ($000) $11,408 Shares 1,950,000 Est. Cost $4.35 Unrealized
AUDENTES THERAPEUTICS INC 0.6%
Value ($000) $11,386 Shares 595,200 Est. Cost $18.00 Unrealized
BMRN BIOMARIN PHARMACEUTICAL INC 0.6%
Value ($000) $11,353 Shares 125,000 Est. Cost $100.37 Unrealized -9.4%
DERMIRA INC 0.6%
Value ($000) $11,295 Shares 387,600 Est. Cost $21.61 Unrealized
RA PHARMACEUTICALS INC 0.6%
Value ($000) $11,244 Shares 600,000 Est. Cost $15.19 Unrealized
ARDX ARDELYX INC 0.5%
Value ($000) $10,200 Shares 2,000,000 Est. Cost $11.10 Unrealized -23.6%
RARE ULTRAGENYX PHARMACEUTICAL IN 0.5%
Value ($000) $9,969 Shares 160,500 Est. Cost $61.83 Unrealized -2.6%
CHRS COHERUS BIOSCIENCES INC 0.5%
Value ($000) $9,957 Shares 693,900 Est. Cost $22.39 Unrealized -14.1%
INTERSECT ENT INC 0.5%
Value ($000) $9,643 Shares 345,000 Est. Cost $25.70 Unrealized
FIBROGEN INC 0.5%
Value ($000) $9,044 Shares 280,000 Est. Cost $26.06 Unrealized
ASND ASCENDIS PHARMA A S 0.5%
Value ($000) $9,022 Shares 325,000 Est. Cost $17.44 Unrealized
MDGL MADRIGAL PHARMACEUTICALS INC 0.4%
Value ($000) $8,780 Shares 540,000 Est. Cost $15.04 Unrealized +3.9%
CLEARSIDE BIOMEDICAL INC 0.4%
Value ($000) $8,518 Shares 935,000 Est. Cost $7.01 Unrealized
THERAPEUTICSMD INC 0.4%
Value ($000) $8,432 Shares 1,600,000 Est. Cost $7.12 Unrealized
ALNY ALNYLAM PHARMACEUTICALS INC 0.4%
Value ($000) $8,375 Shares 105,000 Est. Cost $63.91 Unrealized 0.0%
CHINA CORD BLOOD CORP 0.4%
Value ($000) $8,342 Shares 880,000 Est. Cost $4.24 Unrealized
ASSEMBLY BIOSCIENCES INC 0.4%
Value ($000) $8,054 Shares 390,000 Est. Cost $12.30 Unrealized
INSM INSMED INC 0.4%
Value ($000) $8,031 Shares 468,000 Est. Cost $16.84 Unrealized +1.4%
ACHILLION PHARMACEUTICALS IN 0.4%
Value ($000) $7,918 Shares 1,725,000 Est. Cost $8.48 Unrealized
PORTOLA PHARMACEUTICALS INC 0.4%
Value ($000) $7,864 Shares 140,000 Est. Cost $56.17 Unrealized
REGN REGENERON PHARMACEUTICALS 0.4%
Value ($000) $7,858 Shares 16,000 Est. Cost $402.85 Unrealized +8.0%
PORTOLA PHARMACEUTICALS INC 0.4%
Value ($000) $7,847 Shares 139,700 Est. Cost $56.17 Unrealized
RETROPHIN INC 0.4%
Value ($000) $7,756 Shares 400,000 Est. Cost $23.91 Unrealized
BIOHAVEN PHARMACTL HLDG CO L 0.4%
Value ($000) $7,675 Shares 307,000 Est. Cost $25.00 Unrealized
FOLD AMICUS THERAPEUTICS INC 0.4%
Value ($000) $7,628 Shares 757,500 Est. Cost $10.68 Unrealized -24.7%
OBSEVA SA 0.4%
Value ($000) $7,182 Shares 840,000 Est. Cost $10.41 Unrealized
NEURODERM LTD 0.4%
Value ($000) $7,107 Shares 237,700 Est. Cost $28.71 Unrealized
KITE PHARMA INC 0.4%
Value ($000) $6,998 Shares 67,500 Est. Cost $46.24 Unrealized
SRPT SAREPTA THERAPEUTICS INC 0.3%
Value ($000) $6,911 Shares 205,000 Est. Cost $30.97 Unrealized +5.1%
WALGREENS BOOTS ALLIANCE INC 0.3%
Value ($000) $6,735 Shares 86,000 Est. Cost $84.02 Unrealized
JUNO THERAPEUTICS INC 0.3%
Value ($000) $6,725 Shares 225,000 Est. Cost $49.81 Unrealized
LXRX LEXICON PHARMACEUTICALS INC 0.3%
Value ($000) $6,473 Shares 393,500 Est. Cost Unrealized
MERUS N V 0.3%
Value ($000) $6,372 Shares 402,000 Est. Cost $9.33 Unrealized
AXGN AXOGEN INC 0.3%
Value ($000) $6,281 Shares 375,000 Est. Cost $13.48 Unrealized 0.0%
AIMMUNE THERAPEUTICS INC 0.3%
Value ($000) $6,024 Shares 293,000 Est. Cost $22.58 Unrealized
FIVE PRIME THERAPEUTICS INC 0.3%
Value ($000) $5,932 Shares 197,000 Est. Cost $27.52 Unrealized
1741046D STERIS PLC 0.3%
Value ($000) $5,909 Shares 72,500 Est. Cost $69.60 Unrealized
NABRIVA THERAPEUTICS PLC 0.3%
Value ($000) $5,502 Shares 525,000 Est. Cost $10.48 Unrealized
G1 THERAPEUTICS INC 0.3%
Value ($000) $5,445 Shares 312,188 Est. Cost $17.44 Unrealized
CARDIOME PHARMA CORP 0.3%
Value ($000) $5,424 Shares 1,200,000 Est. Cost $8.88 Unrealized
MEDICINES CO 0.3%
Value ($000) $5,256 Shares 5,000,000 Est. Cost $1.05 Unrealized
SEATTLE GENETICS INC 0.3%
Value ($000) $5,174 Shares 100,000 Est. Cost $51.74 Unrealized
CRVS CORVUS PHARMACEUTICALS INC 0.3%
Value ($000) $5,113 Shares 422,600 Est. Cost $14.35 Unrealized -25.6%
EGALET CORP 0.3%
Value ($000) $5,002 Shares 7,800,000 Est. Cost $0.76 Unrealized
TETRAPHASE PHARMACEUTICALS I 0.3%
Value ($000) $4,977 Shares 698,000 Est. Cost $5.86 Unrealized
ACAD ACADIA PHARMACEUTICALS INC 0.2%
Value ($000) $4,853 Shares 174,000 Est. Cost $29.80 Unrealized 0.0%
ADURO BIOTECH INC 0.2%
Value ($000) $4,731 Shares 415,000 Est. Cost $28.61 Unrealized
AGN 5.5 03/01/18 A ALLERGAN PLC 0.2%
Value ($000) $4,336 Shares 5,000 Est. Cost $1045.60 Unrealized
EXEL EXELIXIS INC 0.2%
Value ($000) $4,310 Shares 175,000 Est. Cost $11.85 Unrealized +78.6%
GLOBAL BLOOD THERAPEUTICS IN 0.2%
Value ($000) $4,103 Shares 150,000 Est. Cost $34.94 Unrealized
OTONOMY INC 0.2%
Value ($000) $3,959 Shares 210,000 Est. Cost $21.56 Unrealized
MGNX MACROGENICS INC 0.2%
Value ($000) $3,940 Shares 225,000 Est. Cost $32.43 Unrealized -41.2%
ADAPY ADAPTIMMUNE THERAPEUTICS PLC 0.2%
Value ($000) $3,929 Shares 875,000 Est. Cost $15.34 Unrealized
MEDICINES CO 0.2%
Value ($000) $3,913 Shares 3,000,000 Est. Cost $1.14 Unrealized
HILL ROM HLDGS INC 0.2%
Value ($000) $3,582 Shares 45,000 Est. Cost $50.45 Unrealized
ALGN ALIGN TECHNOLOGY INC 0.2%
Value ($000) $3,453 Shares 23,000 Est. Cost $135.62 Unrealized 0.0%
BLUEBIRD BIO INC 0.2%
Value ($000) $3,362 Shares 32,000 Est. Cost $105.61 Unrealized
CGEN COMPUGEN LTD 0.2%
Value ($000) $3,135 Shares 825,000 Est. Cost $6.07 Unrealized -31.4%
ALKS ALKERMES PLC 0.2%
Value ($000) $3,014 Shares 52,000 Est. Cost $39.49 Unrealized +47.1%
AXOVANT SCIENCES LTD 0.1%
Value ($000) $2,899 Shares 125,000 Est. Cost $23.19 Unrealized
BMY BRISTOL MYERS SQUIBB CO 0.1%
Value ($000) $2,786 Shares 50,000 Est. Cost $42.96 Unrealized -7.1%
RIGEL PHARMACEUTICALS INC 0.1%
Value ($000) $2,730 Shares 1,000,000 Est. Cost $2.73 Unrealized
ZBH ZIMMER BIOMET HLDGS INC 0.1%
Value ($000) $2,709 Shares 21,100 Est. Cost $99.44 Unrealized +11.1%
DBV TECHNOLOGIES S A 0.1%
Value ($000) $2,607 Shares 73,000 Est. Cost $33.59 Unrealized
GKOS GLAUKOS CORP 0.1%
Value ($000) $2,592 Shares 62,500 Est. Cost $43.59 Unrealized -1.2%
INVA INNOVIVA INC 0.1%
Value ($000) $2,560 Shares 200,000 Est. Cost $11.83 Unrealized +6.0%
HQY HEALTHEQUITY INC 0.1%
Value ($000) $2,541 Shares 51,000 Est. Cost $38.81 Unrealized +20.5%
GLYCOMIMETICS INC 0.1%
Value ($000) $2,511 Shares 225,000 Est. Cost $11.16 Unrealized
GENOCEA BIOSCIENCES INC 0.1%
Value ($000) $2,506 Shares 480,000 Est. Cost $6.85 Unrealized
SERES THERAPEUTICS INC 0.1%
Value ($000) $2,486 Shares 220,000 Est. Cost $38.95 Unrealized
INTRA CELLULAR THERAPIES INC 0.1%
Value ($000) $2,329 Shares 187,500 Est. Cost $39.54 Unrealized
CIDARA THERAPEUTICS INC 0.1%
Value ($000) $2,250 Shares 300,000 Est. Cost $13.32 Unrealized
PROTEOSTASIS THERAPEUTICS IN 0.1%
Value ($000) $2,106 Shares 450,000 Est. Cost $10.10 Unrealized
ALDER BIOPHARMACEUTICALS INC 0.1%
Value ($000) $2,084 Shares 182,000 Est. Cost $24.71 Unrealized
THERAVANCE BIOPHARMA INC 0.1%
Value ($000) $2,032 Shares 1,500,000 Est. Cost $1.14 Unrealized
AEGLEA BIOTHERAPEUTICS INC 0.1%
Value ($000) $2,013 Shares 524,089 Est. Cost $4.86 Unrealized
NOVADAQ TECHNOLOGIES INC 0.1%
Value ($000) $1,758 Shares 150,000 Est. Cost $14.29 Unrealized
MYOVANT SCIENCES LTD 0.1%
Value ($000) $1,755 Shares 150,000 Est. Cost $12.16 Unrealized
ATYR PHARMA INC 0.1%
Value ($000) $1,615 Shares 475,000 Est. Cost $16.05 Unrealized
DYNAVAX TECHNOLOGIES CORP 0.1%
Value ($000) $1,592 Shares 165,000 Est. Cost $24.06 Unrealized
NIVALIS THERAPEUTICS INC 0.1%
Value ($000) $1,446 Shares 600,000 Est. Cost $12.89 Unrealized
SCYNEXIS INC 0.1%
Value ($000) $1,360 Shares 760,000 Est. Cost $6.72 Unrealized
WRIGHT MED GROUP INC 0.1%
Value ($000) $1,116 Shares 1,000,000 Est. Cost $0.90 Unrealized
NOVAVAX INC 0.0%
Value ($000) $943 Shares 820,000 Est. Cost $5.52 Unrealized
PRGO PERRIGO CO PLC 0.0%
Value ($000) $740 Shares 9,800 Est. Cost $116.16 Unrealized -38.3%
CHIASMA INC 0.0%
Value ($000) $714 Shares 492,500 Est. Cost $19.77 Unrealized
EGALET CORP 0.0%
Value ($000) $711 Shares 300,000 Est. Cost $13.18 Unrealized
NEWLINK GENETICS CORP 0.0%
Value ($000) $533 Shares 72,500 Est. Cost $22.84 Unrealized
OREXIGEN THERAPEUTICS INC 0.0%
Value ($000) $479 Shares 165,300 Est. Cost $3.32 Unrealized
TANDEM DIABETES CARE INC 0.0%
Value ($000) $450 Shares 562,500 Est. Cost $13.40 Unrealized
INFIQ INFINITY PHARMACEUTICALS INC 0.0%
Value ($000) $424 Shares 270,000 Est. Cost $11.28 Unrealized -82.9%
DIMENSION THERAPEUTICS INC 0.0%
Value ($000) $393 Shares 271,370 Est. Cost $11.28 Unrealized
CERULEAN PHARMA INC 0.0%
Value ($000) $276 Shares 625,000 Est. Cost $5.94 Unrealized
ANTH ANTHERA PHARMACEUTICALS INC 0.0%
Value ($000) $268 Shares 165,705 Est. Cost $2.24 Unrealized 0.0%