Rock Springs Capital Management LP Diversified Active

CIK: 0001595725 · Show all filings

Period: Q3 2016 (← Previous) (Next →)

Filing Date: Nov 14, 2016

Total Value ($000): $1,595,270 (99.3% shares, 0.7% debt)

Holdings (137)

TESARO INC 3.9%
Value ($000) $62,800 Shares 626,500 Est. Cost $61.31 Unrealized
AETNA INC NEW 3.2%
Value ($000) $50,810 Shares 440,100 Est. Cost $102.02 Unrealized
RADIUS HEALTH INC 3.0%
Value ($000) $48,248 Shares 892,000 Est. Cost $44.78 Unrealized
ACHC ACADIA HEALTHCARE COMPANY IN 2.9%
Value ($000) $45,818 Shares 924,678 Est. Cost $62.40 Unrealized -16.5%
GW PHARMACEUTICALS PLC 2.7%
Value ($000) $43,137 Shares 325,000 Est. Cost $92.80 Unrealized
ALLERGAN PLC 2.7%
Value ($000) $42,838 Shares 186,000 Est. Cost $296.87 Unrealized
SPARK THERAPEUTICS INC 2.4%
Value ($000) $37,538 Shares 625,000 Est. Cost $58.29 Unrealized
MRK MERCK & CO INC 2.3%
Value ($000) $36,666 Shares 587,500 Est. Cost $43.73 Unrealized 0.0%
PFE PFIZER INC 2.2%
Value ($000) $35,760 Shares 1,055,800 Est. Cost $20.09 Unrealized +10.8%
ADVANCED ACCELERATOR APPLIC 2.2%
Value ($000) $35,414 Shares 930,000 Est. Cost $31.31 Unrealized
ALEXION PHARMACEUTICALS INC 2.1%
Value ($000) $32,749 Shares 267,250 Est. Cost $153.08 Unrealized
ISRG INTUITIVE SURGICAL INC 2.0%
Value ($000) $32,617 Shares 45,000 Est. Cost $52.00 Unrealized +47.3%
HCA HCA HOLDINGS INC 2.0%
Value ($000) $32,521 Shares 430,000 Est. Cost $62.20 Unrealized +14.4%
CIGNA CORPORATION 1.9%
Value ($000) $29,778 Shares 228,500 Est. Cost $114.60 Unrealized
COLL COLLEGIUM PHARMACEUTICAL INC 1.9%
Value ($000) $29,757 Shares 1,545,000 Est. Cost $16.32 Unrealized -27.2%
WELLCARE HEALTH PLANS INC 1.7%
Value ($000) $27,458 Shares 234,500 Est. Cost $79.73 Unrealized
GILD GILEAD SCIENCES INC 1.7%
Value ($000) $27,217 Shares 344,000 Est. Cost $55.61 Unrealized +3.9%
CELGENE CORP 1.7%
Value ($000) $26,603 Shares 254,500 Est. Cost $118.41 Unrealized
ACRS ACLARIS THERAPEUTICS INC 1.6%
Value ($000) $26,020 Shares 1,016,000 Est. Cost $19.42 Unrealized +9.2%
MEDICINES CO 1.6%
Value ($000) $25,701 Shares 681,000 Est. Cost $32.97 Unrealized
SHIRE PLC 1.6%
Value ($000) $25,686 Shares 132,500 Est. Cost $185.00 Unrealized
ARDX ARDELYX INC 1.6%
Value ($000) $25,557 Shares 1,975,000 Est. Cost $11.06 Unrealized -5.3%
LLY LILLY ELI & CO 1.4%
Value ($000) $22,152 Shares 276,000 Est. Cost $60.42 Unrealized +13.5%
TBPH THERAVANCE BIOPHARMA INC 1.4%
Value ($000) $21,744 Shares 600,000 Est. Cost $19.05 Unrealized +46.2%
CLEARSIDE BIOMEDICAL INC 1.3%
Value ($000) $21,254 Shares 1,225,000 Est. Cost $7.01 Unrealized
NBIX NEUROCRINE BIOSCIENCES INC 1.3%
Value ($000) $20,762 Shares 410,000 Est. Cost $19.74 Unrealized +152.3%
PEN PENUMBRA INC 1.3%
Value ($000) $20,251 Shares 266,500 Est. Cost $44.46 Unrealized +55.2%
PRTA PROTHENA CORP PLC 1.2%
Value ($000) $18,471 Shares 308,000 Est. Cost $29.28 Unrealized +83.2%
BIIB BIOGEN INC 1.1%
Value ($000) $18,156 Shares 58,000 Est. Cost $273.82 Unrealized +8.2%
PCRX PACIRA PHARMACEUTICALS INC 1.1%
Value ($000) $17,247 Shares 504,000 Est. Cost $59.80 Unrealized -34.5%
AMARIN CORP PLC 1.0%
Value ($000) $15,809 Shares 4,955,746 Est. Cost $3.19 Unrealized
AMGN AMGEN INC 1.0%
Value ($000) $15,680 Shares 94,000 Est. Cost $91.69 Unrealized +39.3%
WRIGHT MED GROUP N V 0.9%
Value ($000) $15,037 Shares 613,000 Est. Cost $23.15 Unrealized
INCY INCYTE CORP 0.9%
Value ($000) $14,756 Shares 156,500 Est. Cost $61.66 Unrealized +36.6%
PRA HEALTH SCIENCES INC 0.9%
Value ($000) $14,297 Shares 253,000 Est. Cost $24.22 Unrealized
MCK MCKESSON CORP 0.9%
Value ($000) $13,674 Shares 82,000 Est. Cost $158.96 Unrealized +8.9%
GLPG GALAPAGOS NV 0.9%
Value ($000) $13,579 Shares 210,000 Est. Cost $48.55 Unrealized
BMY BRISTOL MYERS SQUIBB CO 0.8%
Value ($000) $13,480 Shares 250,000 Est. Cost $45.69 Unrealized +1.0%
JAZZ JAZZ PHARMACEUTICALS PLC 0.8%
Value ($000) $12,998 Shares 107,000 Est. Cost $151.71 Unrealized -11.2%
WALGREENS BOOTS ALLIANCE INC 0.8%
Value ($000) $12,980 Shares 161,000 Est. Cost $84.02 Unrealized
DHR DANAHER CORP DEL 0.8%
Value ($000) $12,542 Shares 160,000 Est. Cost $67.27 Unrealized 0.0%
CHRS COHERUS BIOSCIENCES INC 0.8%
Value ($000) $12,520 Shares 467,500 Est. Cost $21.41 Unrealized +27.4%
EW EDWARDS LIFESCIENCES CORP 0.8%
Value ($000) $12,448 Shares 103,250 Est. Cost $30.00 Unrealized +25.5%
THERAPEUTICSMD INC 0.8%
Value ($000) $12,258 Shares 1,800,000 Est. Cost $7.12 Unrealized
DERMIRA INC 0.8%
Value ($000) $12,006 Shares 355,000 Est. Cost $20.54 Unrealized
PATHEON N V 0.7%
Value ($000) $11,852 Shares 400,000 Est. Cost $29.63 Unrealized
RETROPHIN INC 0.7%
Value ($000) $11,682 Shares 522,000 Est. Cost $23.91 Unrealized
BMRN BIOMARIN PHARMACEUTICAL INC 0.7%
Value ($000) $11,565 Shares 125,000 Est. Cost $100.37 Unrealized -6.2%
HEALTHSOUTH CORP 0.7%
Value ($000) $10,751 Shares 265,000 Est. Cost $41.93 Unrealized
ACHILLION PHARMACEUTICALS IN 0.7%
Value ($000) $10,660 Shares 1,316,000 Est. Cost $9.75 Unrealized
SRPT SAREPTA THERAPEUTICS INC 0.7%
Value ($000) $10,624 Shares 173,000 Est. Cost $29.86 Unrealized +1.2%
RARE ULTRAGENYX PHARMACEUTICAL IN 0.7%
Value ($000) $10,428 Shares 147,000 Est. Cost $61.04 Unrealized +4.6%
HOLX HOLOGIC INC 0.6%
Value ($000) $9,805 Shares 252,500 Est. Cost $34.91 Unrealized +8.1%
FIVE PRIME THERAPEUTICS INC 0.5%
Value ($000) $8,726 Shares 166,250 Est. Cost $27.02 Unrealized
AUDENTES THERAPEUTICS INC 0.5%
Value ($000) $8,638 Shares 485,000 Est. Cost $17.81 Unrealized
ALKS ALKERMES PLC 0.5%
Value ($000) $8,608 Shares 183,027 Est. Cost $39.49 Unrealized +20.4%
EXAS EXACT SCIENCES CORP 0.5%
Value ($000) $8,078 Shares 435,000 Est. Cost $17.62 Unrealized 0.0%
VRTX VERTEX PHARMACEUTICALS INC 0.5%
Value ($000) $7,827 Shares 89,750 Est. Cost $85.36 Unrealized +10.7%
INVITAE CORP 0.5%
Value ($000) $7,796 Shares 890,000 Est. Cost $11.57 Unrealized
WTW WILLIS TOWERS WATSON PUB LTD 0.5%
Value ($000) $7,767 Shares 58,500 Est. Cost $109.08 Unrealized 0.0%
HILL ROM HLDGS INC 0.5%
Value ($000) $7,438 Shares 120,000 Est. Cost $50.45 Unrealized
CRVS CORVUS PHARMACEUTICALS INC 0.5%
Value ($000) $7,403 Shares 450,000 Est. Cost $14.35 Unrealized +0.5%
INSM INSMED INC 0.5%
Value ($000) $7,304 Shares 503,000 Est. Cost $16.84 Unrealized -25.7%
PROTEOSTASIS THERAPEUTICS IN 0.4%
Value ($000) $7,016 Shares 450,000 Est. Cost $10.10 Unrealized
ONC BEIGENE LTD 0.4%
Value ($000) $6,932 Shares 225,000 Est. Cost $29.31 Unrealized
REGN REGENERON PHARMACEUTICALS 0.4%
Value ($000) $6,834 Shares 17,000 Est. Cost $404.27 Unrealized -1.3%
OPHTHOTECH CORP 0.4%
Value ($000) $6,827 Shares 148,000 Est. Cost $47.80 Unrealized
MGNX MACROGENICS INC 0.4%
Value ($000) $6,730 Shares 225,000 Est. Cost $32.43 Unrealized -8.3%
EGALET CORP 0.4%
Value ($000) $6,684 Shares 7,800,000 Est. Cost $0.76 Unrealized
RIGEL PHARMACEUTICALS INC 0.4%
Value ($000) $6,643 Shares 1,810,000 Est. Cost $2.73 Unrealized
LGND LIGAND PHARMACEUTICALS INC 0.4%
Value ($000) $6,634 Shares 65,000 Est. Cost $73.42 Unrealized 0.0%
PARATEK PHARMACEUTICALS INC 0.4%
Value ($000) $6,538 Shares 502,500 Est. Cost $14.55 Unrealized
ENVISION HEALTHCARE HLDGS IN 0.4%
Value ($000) $6,481 Shares 291,000 Est. Cost $34.11 Unrealized
NOVADAQ TECHNOLOGIES INC 0.4%
Value ($000) $6,421 Shares 555,000 Est. Cost $14.29 Unrealized
MERUS N V 0.4%
Value ($000) $6,415 Shares 383,000 Est. Cost $8.50 Unrealized
EPIZYME INC 0.4%
Value ($000) $6,322 Shares 642,500 Est. Cost $17.19 Unrealized
ASND ASCENDIS PHARMA A S 0.4%
Value ($000) $6,030 Shares 300,000 Est. Cost $17.20 Unrealized
ALDER BIOPHARMACEUTICALS INC 0.4%
Value ($000) $5,964 Shares 182,000 Est. Cost $24.71 Unrealized
JUNO THERAPEUTICS INC 0.4%
Value ($000) $5,912 Shares 197,001 Est. Cost $52.64 Unrealized
RTI SURGICAL INC 0.4%
Value ($000) $5,822 Shares 1,860,000 Est. Cost $4.28 Unrealized
ATHENAHEALTH INC 0.4%
Value ($000) $5,770 Shares 45,750 Est. Cost $119.41 Unrealized
AVEXIS INC 0.4%
Value ($000) $5,769 Shares 140,000 Est. Cost $27.24 Unrealized
ENDOCHOICE HLDGS INC 0.4%
Value ($000) $5,766 Shares 722,500 Est. Cost $14.15 Unrealized
INTERSECT ENT INC 0.3%
Value ($000) $5,465 Shares 345,000 Est. Cost $25.70 Unrealized
CGEN COMPUGEN LTD 0.3%
Value ($000) $5,198 Shares 825,000 Est. Cost $6.07 Unrealized +11.6%
ADURO BIOTECH INC 0.3%
Value ($000) $5,158 Shares 415,000 Est. Cost $28.61 Unrealized
FOLD AMICUS THERAPEUTICS INC 0.3%
Value ($000) $5,143 Shares 695,000 Est. Cost $11.02 Unrealized -38.7%
FIBROGEN INC 0.3%
Value ($000) $4,833 Shares 233,500 Est. Cost $25.12 Unrealized
ADAPY ADAPTIMMUNE THERAPEUTICS PLC 0.3%
Value ($000) $4,759 Shares 675,000 Est. Cost $18.26 Unrealized
PBYI PUMA BIOTECHNOLOGY INC 0.3%
Value ($000) $4,660 Shares 69,500 Est. Cost $67.90 Unrealized -25.5%
TANDEM DIABETES CARE INC 0.3%
Value ($000) $4,558 Shares 595,000 Est. Cost $13.40 Unrealized
CLOVIS ONCOLOGY INC 0.3%
Value ($000) $4,506 Shares 125,000 Est. Cost $35.00 Unrealized
CHINA CORD BLOOD CORP 0.3%
Value ($000) $4,497 Shares 880,000 Est. Cost $4.24 Unrealized
KITE PHARMA INC 0.3%
Value ($000) $4,413 Shares 79,000 Est. Cost $46.24 Unrealized
AIMMUNE THERAPEUTICS INC 0.3%
Value ($000) $4,395 Shares 293,000 Est. Cost $22.58 Unrealized
BIOSCRIP INC 0.3%
Value ($000) $4,308 Shares 1,490,492 Est. Cost $2.89 Unrealized
AGN 5.5 03/01/18 A ALLERGAN PLC 0.3%
Value ($000) $4,106 Shares 5,000 Est. Cost $1045.60 Unrealized
MEDP MEDPACE HLDGS INC 0.3%
Value ($000) $4,031 Shares 135,000 Est. Cost $29.20 Unrealized 0.0%
NIVALIS THERAPEUTICS INC 0.2%
Value ($000) $3,976 Shares 489,000 Est. Cost $15.15 Unrealized
MEDICINES CO 0.2%
Value ($000) $3,898 Shares 3,000,000 Est. Cost $1.14 Unrealized
OTONOMY INC 0.2%
Value ($000) $3,820 Shares 210,000 Est. Cost $21.56 Unrealized
CARDIOME PHARMA CORP 0.2%
Value ($000) $3,751 Shares 1,200,000 Est. Cost $8.88 Unrealized
INVA INNOVIVA INC 0.2%
Value ($000) $3,703 Shares 336,900 Est. Cost $11.83 Unrealized -1.4%
PRGO PERRIGO CO PLC 0.2%
Value ($000) $3,499 Shares 37,900 Est. Cost $143.33 Unrealized -35.7%
AEGLEA BIOTHERAPEUTICS INC 0.2%
Value ($000) $3,359 Shares 524,089 Est. Cost $4.86 Unrealized
MD MEDNAX INC 0.2%
Value ($000) $3,313 Shares 50,000 Est. Cost $78.20 Unrealized -12.5%
NABRIVA THERAPEUTICS AG 0.2%
Value ($000) $3,003 Shares 426,000 Est. Cost $9.10 Unrealized
1741046D STERIS PLC 0.2%
Value ($000) $2,924 Shares 40,000 Est. Cost $68.75 Unrealized
INTRA CELLULAR THERAPIES INC 0.2%
Value ($000) $2,896 Shares 190,000 Est. Cost $39.54 Unrealized
CIDARA THERAPEUTICS INC 0.2%
Value ($000) $2,863 Shares 250,000 Est. Cost $13.90 Unrealized
ASSEMBLY BIOSCIENCES INC 0.2%
Value ($000) $2,812 Shares 390,000 Est. Cost $12.30 Unrealized
SERES THERAPEUTICS INC 0.2%
Value ($000) $2,704 Shares 220,000 Est. Cost $38.95 Unrealized
DBV TECHNOLOGIES S A 0.2%
Value ($000) $2,652 Shares 73,000 Est. Cost $33.59 Unrealized
TETRAPHASE PHARMACEUTICALS I 0.2%
Value ($000) $2,537 Shares 662,500 Est. Cost $5.96 Unrealized
GENOCEA BIOSCIENCES INC 0.2%
Value ($000) $2,458 Shares 480,000 Est. Cost $6.85 Unrealized
SCYNEXIS INC 0.2%
Value ($000) $2,457 Shares 635,000 Est. Cost $7.42 Unrealized
EGALET CORP 0.1%
Value ($000) $2,283 Shares 300,000 Est. Cost $13.18 Unrealized
GLOBAL BLOOD THERAPEUTICS IN 0.1%
Value ($000) $2,259 Shares 98,000 Est. Cost $33.88 Unrealized
AMSURG CORP 0.1%
Value ($000) $2,179 Shares 32,500 Est. Cost $67.05 Unrealized
DIMENSION THERAPEUTICS INC 0.1%
Value ($000) $2,168 Shares 271,370 Est. Cost $11.28 Unrealized
NVCR NOVOCURE LTD 0.1%
Value ($000) $1,830 Shares 214,316 Est. Cost $23.86 Unrealized -61.8%
NOVAVAX INC 0.1%
Value ($000) $1,773 Shares 852,500 Est. Cost $5.52 Unrealized
DYNAVAX TECHNOLOGIES CORP 0.1%
Value ($000) $1,731 Shares 165,000 Est. Cost $24.06 Unrealized
VALEANT PHARMACEUTICALS INTL 0.1%
Value ($000) $1,684 Shares 68,600 Est. Cost $168.70 Unrealized
EXEL EXELIXIS INC 0.1%
Value ($000) $1,599 Shares 125,000 Est. Cost $10.81 Unrealized 0.0%
CHIASMA INC 0.1%
Value ($000) $1,448 Shares 492,500 Est. Cost $19.77 Unrealized
ANTHERA PHARMACEUTICALS INC 0.1%
Value ($000) $1,418 Shares 450,000 Est. Cost $4.67 Unrealized
ATYR PHARMA INC 0.1%
Value ($000) $1,379 Shares 433,500 Est. Cost $17.38 Unrealized
BLUEBIRD BIO INC 0.1%
Value ($000) $1,356 Shares 20,000 Est. Cost $125.79 Unrealized
CERNER CORP 0.1%
Value ($000) $1,235 Shares 20,000 Est. Cost $58.60 Unrealized
INSYS THERAPEUTICS INC NEW 0.1%
Value ($000) $1,179 Shares 100,000 Est. Cost $30.55 Unrealized
WRIGHT MED GROUP INC 0.1%
Value ($000) $1,073 Shares 1,000,000 Est. Cost $0.90 Unrealized
MDGL MADRIGAL PHARMACEUTICALS INC 0.1%
Value ($000) $799 Shares 63,000 Est. Cost $9.69 Unrealized 0.0%
CERULEAN PHARMA INC 0.0%
Value ($000) $654 Shares 625,000 Est. Cost $5.94 Unrealized
OREXIGEN THERAPEUTICS INC 0.0%
Value ($000) $549 Shares 165,300 Est. Cost $3.32 Unrealized
INFIQ INFINITY PHARMACEUTICALS INC 0.0%
Value ($000) $421 Shares 270,000 Est. Cost $11.28 Unrealized -86.4%
ARIAD PHARMACEUTICALS INC 0.0%
Value ($000) $342 Shares 25,000 Est. Cost $13.68 Unrealized