Rock Springs Capital Management LP Diversified Active

Location: Baltimore, MD

CIK: 0001595725 · Show all filings

Period: Q2 2017 (← Previous) (Next →)

Filing Date: Aug 14, 2017

Total Value: $1.98B (99.1% shares, 0.9% debt)

Holdings (149)

TESARO INC 3.5%
Value $68.6M Shares 490,500 Est. Cost $63.80 Unrealized
ACHC ACADIA HEALTHCARE COMPANY IN 3.4%
Value $66.66M Shares 1,350,000 Est. Cost $55.43 Unrealized -20.1%
AETNA INC NEW 3.0%
Value $58.91M Shares 388,000 Est. Cost $123.58 Unrealized
UNH UNITEDHEALTH GROUP INC 2.9%
Value $58.22M Shares 314,000 Est. Cost $140.32 Unrealized +8.8%
ALEXION PHARMACEUTICALS INC 2.8%
Value $56.33M Shares 463,000 Est. Cost $139.77 Unrealized
PCRX PACIRA PHARMACEUTICALS INC 2.5%
Value $49.73M Shares 1,042,500 Est. Cost $49.39 Unrealized -6.1%
MRK MERCK & CO INC 2.5%
Value $48.58M Shares 758,000 Est. Cost $43.84 Unrealized +6.2%
CIGNA CORPORATION 2.3%
Value $45.2M Shares 270,000 Est. Cost $118.36 Unrealized
ISRG INTUITIVE SURGICAL INC 2.3%
Value $44.9M Shares 48,000 Est. Cost $53.34 Unrealized +80.2%
RADIUS HEALTH INC 2.1%
Value $41.17M Shares 910,250 Est. Cost $44.64 Unrealized
ALLERGAN PLC 1.9%
Value $37.9M Shares 155,900 Est. Cost $296.87 Unrealized
SPARK THERAPEUTICS INC 1.9%
Value $37.34M Shares 625,000 Est. Cost $58.29 Unrealized
GW PHARMACEUTICALS PLC 1.9%
Value $36.64M Shares 365,500 Est. Cost $94.59 Unrealized
MDT MEDTRONIC PLC 1.8%
Value $35.5M Shares 400,000 Est. Cost $67.64 Unrealized 0.0%
WELLCARE HEALTH PLANS INC 1.8%
Value $35.46M Shares 197,500 Est. Cost $79.73 Unrealized
PRA HEALTH SCIENCES INC 1.8%
Value $34.69M Shares 462,500 Est. Cost $41.88 Unrealized
ADVANCED ACCELERATOR APPLIC 1.7%
Value $32.79M Shares 840,000 Est. Cost $31.31 Unrealized
HUM HUMANA INC 1.6%
Value $31.88M Shares 132,500 Est. Cost $191.96 Unrealized +9.7%
CELGENE CORP 1.6%
Value $31.82M Shares 245,000 Est. Cost $118.53 Unrealized
PEN PENUMBRA INC 1.4%
Value $27.25M Shares 310,500 Est. Cost $48.06 Unrealized +76.7%
MEDICINES CO 1.3%
Value $26.4M Shares 694,446 Est. Cost $33.00 Unrealized
TBPH THERAVANCE BIOPHARMA INC 1.2%
Value $23.9M Shares 600,000 Est. Cost $19.05 Unrealized +101.9%
JNJ JOHNSON & JOHNSON 1.2%
Value $23.15M Shares 175,000 Est. Cost $93.39 Unrealized +7.5%
LOXO ONCOLOGY INC 1.2%
Value $23.09M Shares 288,000 Est. Cost $56.24 Unrealized
COLL COLLEGIUM PHARMACEUTICAL INC 1.1%
Value $22.5M Shares 1,798,195 Est. Cost $15.90 Unrealized -37.8%
EW EDWARDS LIFESCIENCES CORP 1.1%
Value $22.47M Shares 190,001 Est. Cost $31.99 Unrealized +14.1%
ALMOST FAMILY INC 1.1%
Value $22.32M Shares 362,000 Est. Cost $53.54 Unrealized
GILD GILEAD SCIENCES INC 1.1%
Value $22.18M Shares 313,400 Est. Cost $54.83 Unrealized -11.9%
INCY INCYTE CORP 1.1%
Value $21.78M Shares 173,000 Est. Cost $65.77 Unrealized +93.5%
CLOVIS ONCOLOGY INC 1.1%
Value $21.68M Shares 231,500 Est. Cost $56.13 Unrealized
MERSANA THERAPEUTICS INC 1.1%
Value $21.34M Shares 1,527,893 Est. Cost $13.97 Unrealized
NBIX NEUROCRINE BIOSCIENCES INC 1.0%
Value $19.27M Shares 419,000 Est. Cost $20.36 Unrealized +138.3%
JAZZ JAZZ PHARMACEUTICALS PLC 1.0%
Value $19.23M Shares 123,700 Est. Cost $146.27 Unrealized +4.5%
TMO THERMO FISHER SCIENTIFIC INC 1.0%
Value $19.19M Shares 110,000 Est. Cost $164.09 Unrealized 0.0%
HOLX HOLOGIC INC 1.0%
Value $19.06M Shares 420,000 Est. Cost $37.82 Unrealized +16.7%
DHR DANAHER CORP DEL 1.0%
Value $18.99M Shares 225,000 Est. Cost $68.57 Unrealized +4.7%
WRIGHT MED GROUP N V 0.9%
Value $18.42M Shares 670,000 Est. Cost $23.14 Unrealized
MOH MOLINA HEALTHCARE INC 0.9%
Value $18.23M Shares 263,500 Est. Cost $61.36 Unrealized 0.0%
BARD C R INC 0.9%
Value $18.18M Shares 57,500 Est. Cost $316.10 Unrealized
EPIZYME INC 0.9%
Value $17.74M Shares 1,175,000 Est. Cost $16.11 Unrealized
AMARIN CORP PLC 0.9%
Value $17.13M Shares 4,250,000 Est. Cost $3.19 Unrealized
GLPG GALAPAGOS NV 0.9%
Value $16.95M Shares 221,500 Est. Cost $50.00 Unrealized
PRTA PROTHENA CORP PLC 0.8%
Value $16.75M Shares 309,500 Est. Cost $29.28 Unrealized +82.0%
VRTX VERTEX PHARMACEUTICALS INC 0.8%
Value $16.62M Shares 129,000 Est. Cost $95.81 Unrealized +25.6%
PBYI PUMA BIOTECHNOLOGY INC 0.8%
Value $16.26M Shares 186,000 Est. Cost $58.70 Unrealized -4.7%
WTW WILLIS TOWERS WATSON PUB LTD 0.8%
Value $16M Shares 110,000 Est. Cost $109.36 Unrealized +13.2%
EXAS EXACT SCIENCES CORP 0.8%
Value $15.47M Shares 437,500 Est. Cost $20.61 Unrealized +49.8%
PARATEK PHARMACEUTICALS INC 0.7%
Value $14.46M Shares 600,000 Est. Cost $15.77 Unrealized
BIIB BIOGEN INC 0.7%
Value $14.38M Shares 53,000 Est. Cost $273.10 Unrealized -3.2%
AVEXIS INC 0.7%
Value $14.38M Shares 175,000 Est. Cost $38.23 Unrealized
BAX BAXTER INTL INC 0.7%
Value $13.92M Shares 230,000 Est. Cost $49.09 Unrealized 0.0%
HEALTHSOUTH CORP 0.6%
Value $12.83M Shares 265,000 Est. Cost $41.93 Unrealized
ACRS ACLARIS THERAPEUTICS INC 0.6%
Value $11.93M Shares 440,000 Est. Cost $19.88 Unrealized +36.7%
ONC BEIGENE LTD 0.6%
Value $11.93M Shares 265,000 Est. Cost $29.47 Unrealized
INVITAE CORP 0.6%
Value $11.47M Shares 1,200,000 Est. Cost $10.63 Unrealized
RTI SURGICAL INC 0.6%
Value $11.41M Shares 1,950,000 Est. Cost $4.35 Unrealized
AUDENTES THERAPEUTICS INC 0.6%
Value $11.39M Shares 595,200 Est. Cost $18.00 Unrealized
BMRN BIOMARIN PHARMACEUTICAL INC 0.6%
Value $11.35M Shares 125,000 Est. Cost $100.37 Unrealized -9.4%
DERMIRA INC 0.6%
Value $11.29M Shares 387,600 Est. Cost $21.61 Unrealized
RA PHARMACEUTICALS INC 0.6%
Value $11.24M Shares 600,000 Est. Cost $15.19 Unrealized
ARDX ARDELYX INC 0.5%
Value $10.2M Shares 2,000,000 Est. Cost $11.10 Unrealized -23.6%
RARE ULTRAGENYX PHARMACEUTICAL IN 0.5%
Value $9.969M Shares 160,500 Est. Cost $61.83 Unrealized -2.6%
CHRS COHERUS BIOSCIENCES INC 0.5%
Value $9.957M Shares 693,900 Est. Cost $22.39 Unrealized -14.1%
INTERSECT ENT INC 0.5%
Value $9.643M Shares 345,000 Est. Cost $25.70 Unrealized
FIBROGEN INC 0.5%
Value $9.044M Shares 280,000 Est. Cost $26.06 Unrealized
ASND ASCENDIS PHARMA A S 0.5%
Value $9.022M Shares 325,000 Est. Cost $17.44 Unrealized
MDGL MADRIGAL PHARMACEUTICALS INC 0.4%
Value $8.78M Shares 540,000 Est. Cost $15.04 Unrealized +3.9%
CLEARSIDE BIOMEDICAL INC 0.4%
Value $8.518M Shares 935,000 Est. Cost $7.01 Unrealized
THERAPEUTICSMD INC 0.4%
Value $8.432M Shares 1,600,000 Est. Cost $7.12 Unrealized
ALNY ALNYLAM PHARMACEUTICALS INC 0.4%
Value $8.375M Shares 105,000 Est. Cost $63.91 Unrealized 0.0%
CHINA CORD BLOOD CORP 0.4%
Value $8.342M Shares 880,000 Est. Cost $4.24 Unrealized
ASSEMBLY BIOSCIENCES INC 0.4%
Value $8.054M Shares 390,000 Est. Cost $12.30 Unrealized
INSM INSMED INC 0.4%
Value $8.031M Shares 468,000 Est. Cost $16.84 Unrealized +1.4%
ACHILLION PHARMACEUTICALS IN 0.4%
Value $7.918M Shares 1,725,000 Est. Cost $8.48 Unrealized
PORTOLA PHARMACEUTICALS INC 0.4%
Value $7.864M Shares 140,000 Est. Cost $56.17 Unrealized
REGN REGENERON PHARMACEUTICALS 0.4%
Value $7.858M Shares 16,000 Est. Cost $402.85 Unrealized +8.0%
PORTOLA PHARMACEUTICALS INC 0.4%
Value $7.847M Shares 139,700 Est. Cost $56.17 Unrealized
RETROPHIN INC 0.4%
Value $7.756M Shares 400,000 Est. Cost $23.91 Unrealized
BIOHAVEN PHARMACTL HLDG CO L 0.4%
Value $7.675M Shares 307,000 Est. Cost $25.00 Unrealized
FOLD AMICUS THERAPEUTICS INC 0.4%
Value $7.628M Shares 757,500 Est. Cost $10.68 Unrealized -24.7%
OBSEVA SA 0.4%
Value $7.182M Shares 840,000 Est. Cost $10.41 Unrealized
NEURODERM LTD 0.4%
Value $7.107M Shares 237,700 Est. Cost $28.71 Unrealized
KITE PHARMA INC 0.4%
Value $6.998M Shares 67,500 Est. Cost $46.24 Unrealized
SRPT SAREPTA THERAPEUTICS INC 0.3%
Value $6.911M Shares 205,000 Est. Cost $30.97 Unrealized +5.1%
WALGREENS BOOTS ALLIANCE INC 0.3%
Value $6.735M Shares 86,000 Est. Cost $84.02 Unrealized
JUNO THERAPEUTICS INC 0.3%
Value $6.725M Shares 225,000 Est. Cost $49.81 Unrealized
LXRX LEXICON PHARMACEUTICALS INC 0.3%
Value $6.473M Shares 393,500 Est. Cost Unrealized
MERUS N V 0.3%
Value $6.372M Shares 402,000 Est. Cost $9.33 Unrealized
AXGN AXOGEN INC 0.3%
Value $6.281M Shares 375,000 Est. Cost $13.48 Unrealized 0.0%
AIMMUNE THERAPEUTICS INC 0.3%
Value $6.024M Shares 293,000 Est. Cost $22.58 Unrealized
FIVE PRIME THERAPEUTICS INC 0.3%
Value $5.932M Shares 197,000 Est. Cost $27.52 Unrealized
1741046D STERIS PLC 0.3%
Value $5.909M Shares 72,500 Est. Cost $69.60 Unrealized
NABRIVA THERAPEUTICS PLC 0.3%
Value $5.502M Shares 525,000 Est. Cost $10.48 Unrealized
G1 THERAPEUTICS INC 0.3%
Value $5.445M Shares 312,188 Est. Cost $17.44 Unrealized
CARDIOME PHARMA CORP 0.3%
Value $5.424M Shares 1,200,000 Est. Cost $8.88 Unrealized
MEDICINES CO 0.3%
Value $5.256M Shares 5,000,000 Est. Cost $1.05 Unrealized
SEATTLE GENETICS INC 0.3%
Value $5.174M Shares 100,000 Est. Cost $51.74 Unrealized
CRVS CORVUS PHARMACEUTICALS INC 0.3%
Value $5.113M Shares 422,600 Est. Cost $14.35 Unrealized -25.6%
EGALET CORP 0.3%
Value $5.002M Shares 7,800,000 Est. Cost $0.76 Unrealized
TETRAPHASE PHARMACEUTICALS I 0.3%
Value $4.977M Shares 698,000 Est. Cost $5.86 Unrealized
ACAD ACADIA PHARMACEUTICALS INC 0.2%
Value $4.853M Shares 174,000 Est. Cost $29.80 Unrealized 0.0%
ADURO BIOTECH INC 0.2%
Value $4.731M Shares 415,000 Est. Cost $28.61 Unrealized
AGN 5.5 03/01/18 A ALLERGAN PLC 0.2%
Value $4.336M Shares 5,000 Est. Cost $1045.60 Unrealized
EXEL EXELIXIS INC 0.2%
Value $4.31M Shares 175,000 Est. Cost $11.85 Unrealized +78.6%
GLOBAL BLOOD THERAPEUTICS IN 0.2%
Value $4.103M Shares 150,000 Est. Cost $34.94 Unrealized
OTONOMY INC 0.2%
Value $3.959M Shares 210,000 Est. Cost $21.56 Unrealized
MGNX MACROGENICS INC 0.2%
Value $3.94M Shares 225,000 Est. Cost $32.43 Unrealized -41.2%
ADAPY ADAPTIMMUNE THERAPEUTICS PLC 0.2%
Value $3.929M Shares 875,000 Est. Cost $15.34 Unrealized
MEDICINES CO 0.2%
Value $3.913M Shares 3,000,000 Est. Cost $1.14 Unrealized
HILL ROM HLDGS INC 0.2%
Value $3.582M Shares 45,000 Est. Cost $50.45 Unrealized
ALGN ALIGN TECHNOLOGY INC 0.2%
Value $3.453M Shares 23,000 Est. Cost $135.62 Unrealized 0.0%
BLUEBIRD BIO INC 0.2%
Value $3.362M Shares 32,000 Est. Cost $105.61 Unrealized
CGEN COMPUGEN LTD 0.2%
Value $3.135M Shares 825,000 Est. Cost $6.07 Unrealized -31.4%
ALKS ALKERMES PLC 0.2%
Value $3.014M Shares 52,000 Est. Cost $39.49 Unrealized +47.1%
AXOVANT SCIENCES LTD 0.1%
Value $2.899M Shares 125,000 Est. Cost $23.19 Unrealized
BMY BRISTOL MYERS SQUIBB CO 0.1%
Value $2.786M Shares 50,000 Est. Cost $42.96 Unrealized -7.1%
RIGEL PHARMACEUTICALS INC 0.1%
Value $2.73M Shares 1,000,000 Est. Cost $2.73 Unrealized
ZBH ZIMMER BIOMET HLDGS INC 0.1%
Value $2.709M Shares 21,100 Est. Cost $99.44 Unrealized +11.1%
DBV TECHNOLOGIES S A 0.1%
Value $2.607M Shares 73,000 Est. Cost $33.59 Unrealized
GKOS GLAUKOS CORP 0.1%
Value $2.592M Shares 62,500 Est. Cost $43.59 Unrealized -1.2%
INVA INNOVIVA INC 0.1%
Value $2.56M Shares 200,000 Est. Cost $11.83 Unrealized +6.0%
HQY HEALTHEQUITY INC 0.1%
Value $2.541M Shares 51,000 Est. Cost $38.81 Unrealized +20.5%
GLYCOMIMETICS INC 0.1%
Value $2.511M Shares 225,000 Est. Cost $11.16 Unrealized
GENOCEA BIOSCIENCES INC 0.1%
Value $2.506M Shares 480,000 Est. Cost $6.85 Unrealized
SERES THERAPEUTICS INC 0.1%
Value $2.486M Shares 220,000 Est. Cost $38.95 Unrealized
INTRA CELLULAR THERAPIES INC 0.1%
Value $2.329M Shares 187,500 Est. Cost $39.54 Unrealized
CIDARA THERAPEUTICS INC 0.1%
Value $2.25M Shares 300,000 Est. Cost $13.32 Unrealized
PROTEOSTASIS THERAPEUTICS IN 0.1%
Value $2.106M Shares 450,000 Est. Cost $10.10 Unrealized
ALDER BIOPHARMACEUTICALS INC 0.1%
Value $2.084M Shares 182,000 Est. Cost $24.71 Unrealized
THERAVANCE BIOPHARMA INC 0.1%
Value $2.032M Shares 1,500,000 Est. Cost $1.14 Unrealized
AEGLEA BIOTHERAPEUTICS INC 0.1%
Value $2.013M Shares 524,089 Est. Cost $4.86 Unrealized
NOVADAQ TECHNOLOGIES INC 0.1%
Value $1.758M Shares 150,000 Est. Cost $14.29 Unrealized
MYOVANT SCIENCES LTD 0.1%
Value $1.755M Shares 150,000 Est. Cost $12.16 Unrealized
ATYR PHARMA INC 0.1%
Value $1.615M Shares 475,000 Est. Cost $16.05 Unrealized
DYNAVAX TECHNOLOGIES CORP 0.1%
Value $1.592M Shares 165,000 Est. Cost $24.06 Unrealized
NIVALIS THERAPEUTICS INC 0.1%
Value $1.446M Shares 600,000 Est. Cost $12.89 Unrealized
SCYNEXIS INC 0.1%
Value $1.36M Shares 760,000 Est. Cost $6.72 Unrealized
WRIGHT MED GROUP INC 0.1%
Value $1.116M Shares 1,000,000 Est. Cost $0.90 Unrealized
NOVAVAX INC 0.0%
Value $943K Shares 820,000 Est. Cost $5.52 Unrealized
PRGO PERRIGO CO PLC 0.0%
Value $740K Shares 9,800 Est. Cost $116.16 Unrealized -38.3%
CHIASMA INC 0.0%
Value $714K Shares 492,500 Est. Cost $19.77 Unrealized
EGALET CORP 0.0%
Value $711K Shares 300,000 Est. Cost $13.18 Unrealized
NEWLINK GENETICS CORP 0.0%
Value $533K Shares 72,500 Est. Cost $22.84 Unrealized
OREXIGEN THERAPEUTICS INC 0.0%
Value $479K Shares 165,300 Est. Cost $3.32 Unrealized
TANDEM DIABETES CARE INC 0.0%
Value $450K Shares 562,500 Est. Cost $13.40 Unrealized
INFIQ INFINITY PHARMACEUTICALS INC 0.0%
Value $424K Shares 270,000 Est. Cost $11.28 Unrealized -82.9%
DIMENSION THERAPEUTICS INC 0.0%
Value $393K Shares 271,370 Est. Cost $11.28 Unrealized
CERULEAN PHARMA INC 0.0%
Value $276K Shares 625,000 Est. Cost $5.94 Unrealized
ANTH ANTHERA PHARMACEUTICALS INC 0.0%
Value $268K Shares 165,705 Est. Cost $2.24 Unrealized 0.0%