Rock Springs Capital Management LP Diversified Active

CIK: 0001595725 · Show all filings

Period: Q4 2015 (← Previous) (Next →)

Filing Date: Feb 16, 2016

Total Value ($000): $1,319,729 (100.0% shares, 0.0% debt)

Holdings (120)

ALLERGAN PLC 3.8%
Value ($000) $50,625 Shares 162,000 Est. Cost $304.59 Unrealized
AETNA INC NEW 3.4%
Value ($000) $44,437 Shares 411,000 Est. Cost $100.59 Unrealized
ACHC ACADIA HEALTHCARE COMPANY IN 3.2%
Value ($000) $42,161 Shares 675,000 Est. Cost $64.84 Unrealized +0.5%
ALEXION PHARMACEUTICALS INC 2.8%
Value ($000) $36,815 Shares 193,000 Est. Cost $162.06 Unrealized
RADIUS HEALTH INC 2.8%
Value ($000) $36,770 Shares 597,500 Est. Cost $49.90 Unrealized
GILD GILEAD SCIENCES INC 2.5%
Value ($000) $32,917 Shares 325,300 Est. Cost $55.20 Unrealized +32.1%
BAXALTA INC 2.4%
Value ($000) $31,614 Shares 810,000 Est. Cost $39.03 Unrealized
PFE PFIZER INC 2.4%
Value ($000) $31,473 Shares 975,000 Est. Cost $20.16 Unrealized +1.1%
HCA HCA HOLDINGS INC 2.2%
Value ($000) $29,081 Shares 430,000 Est. Cost $62.20 Unrealized +4.2%
COLL COLLEGIUM PHARMACEUTICAL INC 2.1%
Value ($000) $27,651 Shares 1,005,487 Est. Cost $17.50 Unrealized +20.3%
CELGENE CORP 2.1%
Value ($000) $27,545 Shares 230,000 Est. Cost $120.46 Unrealized
SPARK THERAPEUTICS INC 1.9%
Value ($000) $25,374 Shares 560,000 Est. Cost $59.67 Unrealized
ADVANCED ACCELERATOR APPLIC 1.9%
Value ($000) $25,016 Shares 800,000 Est. Cost $31.27 Unrealized
TEVA TEVA PHARMACEUTICAL INDS LTD 1.9%
Value ($000) $24,897 Shares 379,300 Est. Cost $57.78 Unrealized
ACRS ACLARIS THERAPEUTICS INC 1.8%
Value ($000) $24,142 Shares 896,154 Est. Cost $19.34 Unrealized 0.0%
MEDICINES CO 1.8%
Value ($000) $23,338 Shares 625,000 Est. Cost $32.94 Unrealized
LLY LILLY ELI & CO 1.8%
Value ($000) $23,247 Shares 275,897 Est. Cost $60.42 Unrealized +15.4%
ISRG INTUITIVE SURGICAL INC 1.6%
Value ($000) $21,573 Shares 39,500 Est. Cost $49.81 Unrealized +12.7%
NBIX NEUROCRINE BIOSCIENCES INC 1.6%
Value ($000) $21,355 Shares 377,500 Est. Cost $17.96 Unrealized +182.9%
PCRX PACIRA PHARMACEUTICALS INC 1.5%
Value ($000) $19,965 Shares 260,000 Est. Cost $68.62 Unrealized -17.5%
CIGNA CORPORATION 1.4%
Value ($000) $17,852 Shares 122,000 Est. Cost $102.49 Unrealized
TESARO INC 1.3%
Value ($000) $17,475 Shares 334,000 Est. Cost $39.74 Unrealized
PRTA PROTHENA CORP PLC 1.3%
Value ($000) $16,891 Shares 248,000 Est. Cost $26.90 Unrealized +124.2%
ELV ANTHEM INC 1.3%
Value ($000) $16,844 Shares 120,800 Est. Cost $130.29 Unrealized -8.2%
WELLCARE HEALTH PLANS INC 1.3%
Value ($000) $16,776 Shares 214,500 Est. Cost $78.21 Unrealized
BIIB BIOGEN INC 1.2%
Value ($000) $15,517 Shares 50,650 Est. Cost $275.21 Unrealized +4.4%
MCK MCKESSON CORP 1.1%
Value ($000) $14,299 Shares 72,500 Est. Cost $158.81 Unrealized +9.9%
TMO THERMO FISHER SCIENTIFIC INC 1.1%
Value ($000) $14,185 Shares 100,000 Est. Cost $124.72 Unrealized +3.8%
MD MEDNAX INC 1.0%
Value ($000) $13,830 Shares 193,000 Est. Cost $78.32 Unrealized -5.6%
INCY INCYTE CORP 1.0%
Value ($000) $13,773 Shares 127,000 Est. Cost $58.23 Unrealized +91.5%
GLPG GALAPAGOS NV 1.0%
Value ($000) $13,205 Shares 210,000 Est. Cost $48.55 Unrealized
AMGN AMGEN INC 1.0%
Value ($000) $13,132 Shares 80,900 Est. Cost $88.59 Unrealized +31.5%
RETROPHIN INC 1.0%
Value ($000) $13,021 Shares 675,000 Est. Cost $23.91 Unrealized
ARDX ARDELYX INC 0.9%
Value ($000) $12,367 Shares 682,500 Est. Cost $13.24 Unrealized +40.6%
THERAPEUTICSMD INC 0.9%
Value ($000) $12,288 Shares 1,185,000 Est. Cost $7.42 Unrealized
ACHILLION PHARMACEUTICALS IN 0.9%
Value ($000) $11,923 Shares 1,105,000 Est. Cost $10.13 Unrealized
RARE ULTRAGENYX PHARMACEUTICAL IN 0.9%
Value ($000) $11,835 Shares 105,500 Est. Cost $59.56 Unrealized +67.9%
ADURO BIOTECH INC 0.9%
Value ($000) $11,678 Shares 415,000 Est. Cost $28.61 Unrealized
PRA HEALTH SCIENCES INC 0.9%
Value ($000) $11,453 Shares 253,000 Est. Cost $24.22 Unrealized
JAZZ JAZZ PHARMACEUTICALS PLC 0.9%
Value ($000) $11,287 Shares 80,300 Est. Cost $155.41 Unrealized -10.8%
PEN PENUMBRA INC 0.8%
Value ($000) $11,031 Shares 205,000 Est. Cost $40.68 Unrealized +11.3%
WRIGHT MED GROUP N V 0.8%
Value ($000) $11,026 Shares 456,000 Est. Cost $24.18 Unrealized
TBPH THERAVANCE BIOPHARMA INC 0.8%
Value ($000) $10,572 Shares 645,000 Est. Cost $18.85 Unrealized -15.8%
DERMIRA INC 0.8%
Value ($000) $10,037 Shares 290,000 Est. Cost $18.60 Unrealized
INSYS THERAPEUTICS INC NEW 0.7%
Value ($000) $9,691 Shares 338,500 Est. Cost $31.71 Unrealized
INTRA CELLULAR THERAPIES INC 0.7%
Value ($000) $9,682 Shares 180,000 Est. Cost $40.04 Unrealized
CARDIOME PHARMA CORP 0.7%
Value ($000) $9,651 Shares 1,190,000 Est. Cost $8.88 Unrealized
CHIASMA INC 0.7%
Value ($000) $9,540 Shares 487,500 Est. Cost $19.88 Unrealized
IDXX IDEXX LABS INC 0.7%
Value ($000) $9,297 Shares 127,500 Est. Cost $69.50 Unrealized +2.6%
ADAPY ADAPTIMMUNE THERAPEUTICS PLC 0.7%
Value ($000) $9,226 Shares 765,001 Est. Cost $18.26 Unrealized
VRTX VERTEX PHARMACEUTICALS INC 0.7%
Value ($000) $9,154 Shares 72,750 Est. Cost $84.03 Unrealized +43.7%
ANACOR PHARMACEUTICALS INC 0.7%
Value ($000) $8,699 Shares 77,000 Est. Cost $117.71 Unrealized
JUNO THERAPEUTICS INC 0.7%
Value ($000) $8,662 Shares 197,001 Est. Cost $52.64 Unrealized
SERES THERAPEUTICS INC 0.7%
Value ($000) $8,611 Shares 245,400 Est. Cost $39.79 Unrealized
VALEANT PHARMACEUTICALS INTL 0.6%
Value ($000) $8,508 Shares 83,700 Est. Cost $177.34 Unrealized
PORTOLA PHARMACEUTICALS INC 0.6%
Value ($000) $8,489 Shares 165,000 Est. Cost $51.45 Unrealized
INOVALON HLDGS INC 0.6%
Value ($000) $8,114 Shares 477,300 Est. Cost $27.87 Unrealized
HEARTWARE INTL INC 0.6%
Value ($000) $8,098 Shares 160,669 Est. Cost $68.66 Unrealized
GW PHARMACEUTICALS PLC 0.6%
Value ($000) $8,055 Shares 116,000 Est. Cost $80.68 Unrealized
INSM INSMED INC 0.6%
Value ($000) $7,850 Shares 432,500 Est. Cost $17.62 Unrealized +0.0%
INTERSECT ENT INC 0.6%
Value ($000) $7,589 Shares 337,293 Est. Cost $25.85 Unrealized
RTI SURGICAL INC 0.6%
Value ($000) $7,384 Shares 1,860,000 Est. Cost $4.28 Unrealized
BMRN BIOMARIN PHARMACEUTICAL INC 0.6%
Value ($000) $7,333 Shares 70,000 Est. Cost $112.60 Unrealized -7.4%
RELYPSA INC 0.5%
Value ($000) $7,142 Shares 252,000 Est. Cost $26.92 Unrealized
NOVADAQ TECHNOLOGIES INC 0.5%
Value ($000) $6,880 Shares 540,000 Est. Cost $14.38 Unrealized
HEALTHSOUTH CORP 0.5%
Value ($000) $6,788 Shares 195,000 Est. Cost $43.13 Unrealized
MGNX MACROGENICS INC 0.5%
Value ($000) $6,751 Shares 218,000 Est. Cost $32.86 Unrealized -7.6%
TANDEM DIABETES CARE INC 0.5%
Value ($000) $6,643 Shares 562,500 Est. Cost $13.74 Unrealized
CHRS COHERUS BIOSCIENCES INC 0.5%
Value ($000) $6,475 Shares 282,000 Est. Cost $21.12 Unrealized +21.9%
NOVAVAX INC 0.5%
Value ($000) $6,460 Shares 770,000 Est. Cost $5.56 Unrealized
ENVISION HEALTHCARE HLDGS IN 0.5%
Value ($000) $6,363 Shares 245,000 Est. Cost $36.18 Unrealized
ATHENAHEALTH INC 0.5%
Value ($000) $6,358 Shares 39,500 Est. Cost $116.34 Unrealized
XENOPORT INC 0.5%
Value ($000) $6,039 Shares 1,100,000 Est. Cost $5.44 Unrealized
REGN REGENERON PHARMACEUTICALS 0.5%
Value ($000) $5,972 Shares 11,000 Est. Cost $402.47 Unrealized +33.9%
EPIZYME INC 0.4%
Value ($000) $5,927 Shares 370,000 Est. Cost $21.24 Unrealized
COOPER COS INC 0.4%
Value ($000) $5,905 Shares 44,000 Est. Cost $137.27 Unrealized
FIBROGEN INC 0.4%
Value ($000) $5,789 Shares 190,000 Est. Cost $26.56 Unrealized
CHINA CORD BLOOD CORP 0.4%
Value ($000) $5,606 Shares 880,000 Est. Cost $4.24 Unrealized
FIVE PRIME THERAPEUTICS INC 0.4%
Value ($000) $5,603 Shares 135,000 Est. Cost $22.66 Unrealized
FOLD AMICUS THERAPEUTICS INC 0.4%
Value ($000) $5,495 Shares 566,500 Est. Cost $11.93 Unrealized -24.5%
OTONOMY INC 0.4%
Value ($000) $5,481 Shares 197,500 Est. Cost $22.99 Unrealized
ABBV ABBVIE INC 0.4%
Value ($000) $5,184 Shares 87,500 Est. Cost $35.44 Unrealized +7.1%
CGEN COMPUGEN LTD 0.4%
Value ($000) $5,144 Shares 805,000 Est. Cost $6.08 Unrealized +7.8%
AGN 5.5 03/01/18 A ALLERGAN PLC 0.4%
Value ($000) $5,136 Shares 5,000 Est. Cost $1045.60 Unrealized
INVITAE CORP 0.4%
Value ($000) $5,114 Shares 622,900 Est. Cost $12.70 Unrealized
ASND ASCENDIS PHARMA A S 0.4%
Value ($000) $4,946 Shares 270,000 Est. Cost $17.64 Unrealized
KITE PHARMA INC 0.4%
Value ($000) $4,930 Shares 80,000 Est. Cost $46.24 Unrealized
ENDOCHOICE HLDGS INC 0.4%
Value ($000) $4,927 Shares 590,000 Est. Cost $16.16 Unrealized
NVCR NOVOCURE LTD 0.4%
Value ($000) $4,792 Shares 214,316 Est. Cost $23.86 Unrealized 0.0%
AIMMUNE THERAPEUTICS INC 0.4%
Value ($000) $4,790 Shares 259,646 Est. Cost $23.74 Unrealized
DYAX CORP 0.4%
Value ($000) $4,665 Shares 124,000 Est. Cost $26.63 Unrealized
CLOVIS ONCOLOGY INC 0.3%
Value ($000) $4,375 Shares 125,000 Est. Cost $35.00 Unrealized
PRGO PERRIGO CO PLC 0.3%
Value ($000) $4,341 Shares 30,000 Est. Cost $153.80 Unrealized 0.0%
CIDARA THERAPEUTICS INC 0.3%
Value ($000) $4,290 Shares 250,000 Est. Cost $13.90 Unrealized
SRPT SAREPTA THERAPEUTICS INC 0.3%
Value ($000) $4,147 Shares 107,500 Est. Cost $32.42 Unrealized 0.0%
ATYR PHARMA INC 0.3%
Value ($000) $4,081 Shares 415,196 Est. Cost $17.97 Unrealized
SCYNEXIS INC 0.3%
Value ($000) $3,943 Shares 635,000 Est. Cost $7.42 Unrealized
NIVALIS THERAPEUTICS INC 0.3%
Value ($000) $3,785 Shares 489,000 Est. Cost $15.15 Unrealized
DYNAVAX TECHNOLOGIES CORP 0.3%
Value ($000) $3,624 Shares 150,000 Est. Cost $24.54 Unrealized
RIGEL PHARMACEUTICALS INC 0.3%
Value ($000) $3,333 Shares 1,100,000 Est. Cost $3.03 Unrealized
EGALET CORP 0.3%
Value ($000) $3,306 Shares 300,000 Est. Cost $13.18 Unrealized
DIMENSION THERAPEUTICS INC 0.2%
Value ($000) $3,061 Shares 271,370 Est. Cost $11.28 Unrealized
OREXIGEN THERAPEUTICS INC 0.2%
Value ($000) $2,838 Shares 1,650,000 Est. Cost $5.43 Unrealized
ASSEMBLY BIOSCIENCES INC 0.2%
Value ($000) $2,786 Shares 371,000 Est. Cost $12.67 Unrealized
GENOCEA BIOSCIENCES INC 0.2%
Value ($000) $2,530 Shares 480,000 Est. Cost $6.85 Unrealized
INTERCEPT PHARMACEUTICALS IN 0.2%
Value ($000) $2,315 Shares 15,500 Est. Cost $197.65 Unrealized
GLOBAL BLOOD THERAPEUTICS IN 0.2%
Value ($000) $2,279 Shares 70,500 Est. Cost $40.70 Unrealized
NABRIVA THERAPEUTICS AG 0.2%
Value ($000) $2,244 Shares 235,000 Est. Cost $9.50 Unrealized
SRPT SAREPTA THERAPEUTICS INC 0.2%
Value ($000) $2,056 Shares 53,300 Est. Cost $32.42 Unrealized 0.0%
TETRAPHASE PHARMACEUTICALS I 0.2%
Value ($000) $2,006 Shares 200,000 Est. Cost $10.03 Unrealized
ANTHERA PHARMACEUTICALS INC 0.1%
Value ($000) $1,763 Shares 380,000 Est. Cost $4.87 Unrealized
CERULEAN PHARMA INC 0.1%
Value ($000) $1,750 Shares 625,000 Est. Cost $5.94 Unrealized
INFIQ INFINITY PHARMACEUTICALS INC 0.1%
Value ($000) $1,688 Shares 215,000 Est. Cost $12.60 Unrealized -31.7%
BLUEBIRD BIO INC 0.1%
Value ($000) $1,284 Shares 20,000 Est. Cost $125.79 Unrealized
SOPHIRIS BIO INC 0.1%
Value ($000) $1,138 Shares 628,563 Est. Cost $1.81 Unrealized
MIRNA THERAPEUTICS INC 0.1%
Value ($000) $938 Shares 150,000 Est. Cost $6.25 Unrealized
DBV TECHNOLOGIES S A 0.1%
Value ($000) $908 Shares 25,000 Est. Cost $35.60 Unrealized
PBYI PUMA BIOTECHNOLOGY INC 0.1%
Value ($000) $862 Shares 11,000 Est. Cost $172.74 Unrealized -54.6%
PARATEK PHARMACEUTICALS INC 0.0%
Value ($000) $585 Shares 30,827 Est. Cost $18.98 Unrealized
ARATANA THERAPEUTICS INC 0.0%
Value ($000) $242 Shares 43,445 Est. Cost $12.58 Unrealized