Rock Springs Capital Management LP Diversified Active

CIK: 0001595725 · Show all filings

Period: Q4 2019 (← Previous) (Next →)

Filing Date: Feb 14, 2020

Total Value ($000): $3,164,999 (99.3% shares, 0.7% debt)

Holdings (130)

UNH UNITEDHEALTH GROUP INC 5.5%
Value ($000) $173,742 Shares 591,000 Est. Cost $164.29 Unrealized +44.0%
NBIX NEUROCRINE BIOSCIENCES INC 4.3%
Value ($000) $137,372 Shares 1,278,000 Est. Cost $65.86 Unrealized +59.0%
WELLCARE HEALTH PLANS INC 3.3%
Value ($000) $105,832 Shares 320,500 Est. Cost $187.33 Unrealized
AMARIN CORP PLC 3.1%
Value ($000) $99,696 Shares 4,650,000 Est. Cost $4.95 Unrealized
ISRG INTUITIVE SURGICAL INC 2.8%
Value ($000) $90,150 Shares 152,500 Est. Cost $105.96 Unrealized +76.7%
JNJ JOHNSON & JOHNSON 2.6%
Value ($000) $81,323 Shares 557,500 Est. Cost $113.68 Unrealized +0.4%
HCA HCA HEALTHCARE INC 2.2%
Value ($000) $69,101 Shares 467,500 Est. Cost $93.02 Unrealized +37.2%
HUM HUMANA INC 2.1%
Value ($000) $67,806 Shares 185,000 Est. Cost $300.46 Unrealized 0.0%
EHC ENCOMPASS HEALTH CORP 1.8%
Value ($000) $56,455 Shares 815,000 Est. Cost $45.89 Unrealized +9.8%
BSX BOSTON SCIENTIFIC CORP 1.7%
Value ($000) $54,264 Shares 1,200,000 Est. Cost $35.85 Unrealized +16.7%
PCRX PACIRA BIOSCIENCES 1.6%
Value ($000) $52,095 Shares 1,150,000 Est. Cost $47.44 Unrealized -10.5%
EPIZYME INC 1.6%
Value ($000) $50,430 Shares 2,050,000 Est. Cost $14.96 Unrealized
TFX TELEFLEX INC 1.5%
Value ($000) $48,937 Shares 130,000 Est. Cost $242.14 Unrealized +37.1%
PODD INSULET CORP 1.4%
Value ($000) $44,598 Shares 260,500 Est. Cost $104.86 Unrealized +58.9%
SRPT SAREPTA THERAPEUTICS INC 1.4%
Value ($000) $44,583 Shares 345,500 Est. Cost $54.43 Unrealized +85.4%
VRTX VERTEX PHARMACEUTICALS INC 1.4%
Value ($000) $44,447 Shares 203,000 Est. Cost $117.87 Unrealized +71.7%
BAX BAXTER INTL INC 1.4%
Value ($000) $43,901 Shares 525,000 Est. Cost $61.14 Unrealized +20.0%
EW EDWARDS LIFESCIENCES CORP 1.4%
Value ($000) $42,809 Shares 183,500 Est. Cost $33.73 Unrealized +131.5%
IRTC IRHYTHM TECHNOLOGIES INC 1.3%
Value ($000) $42,488 Shares 624,000 Est. Cost $53.91 Unrealized +25.8%
ALNY ALNYLAM PHARMACEUTICALS INC 1.3%
Value ($000) $41,922 Shares 364,000 Est. Cost $84.49 Unrealized +18.0%
PEN PENUMBRA INC 1.3%
Value ($000) $39,835 Shares 242,500 Est. Cost $55.16 Unrealized +188.3%
ARGX ARGENX SE 1.3%
Value ($000) $39,729 Shares 247,500 Est. Cost $103.80 Unrealized
EXAS EXACT SCIENCES CORP 1.2%
Value ($000) $38,842 Shares 420,000 Est. Cost $31.16 Unrealized +182.1%
MIRATI THERAPEUTICS INC 1.2%
Value ($000) $38,658 Shares 300,000 Est. Cost $60.25 Unrealized
ARDX ARDELYX INC 1.2%
Value ($000) $36,399 Shares 4,850,000 Est. Cost $7.09 Unrealized -14.2%
GLPG GALAPAGOS NV 1.1%
Value ($000) $36,195 Shares 175,000 Est. Cost $55.87 Unrealized
ONC BEIGENE LTD 1.1%
Value ($000) $35,605 Shares 214,800 Est. Cost $33.43 Unrealized
RA PHARMACEUTICALS INC 1.1%
Value ($000) $35,198 Shares 750,000 Est. Cost $15.03 Unrealized
CHRS COHERUS BIOSCIENCES INC 1.1%
Value ($000) $35,110 Shares 1,950,000 Est. Cost $18.76 Unrealized -1.7%
APREA THERAPEUTICS INC 1.0%
Value ($000) $33,224 Shares 723,991 Est. Cost $45.89 Unrealized
NEVRO CORP 1.0%
Value ($000) $32,794 Shares 279,000 Est. Cost $75.00 Unrealized
COLL COLLEGIUM PHARMACEUTICAL INC 1.0%
Value ($000) $32,414 Shares 1,575,000 Est. Cost $15.97 Unrealized +4.4%
ACHC ACADIA HEALTHCARE COMPANY IN 1.0%
Value ($000) $32,390 Shares 975,000 Est. Cost $44.80 Unrealized -30.1%
IDXX IDEXX LABS INC 1.0%
Value ($000) $31,388 Shares 120,200 Est. Cost $198.10 Unrealized +33.0%
ALGN ALIGN TECHNOLOGY INC 1.0%
Value ($000) $30,946 Shares 110,900 Est. Cost $198.79 Unrealized +25.4%
ASSEMBLY BIOSCIENCES INC 1.0%
Value ($000) $30,690 Shares 1,500,000 Est. Cost $14.17 Unrealized
AGIO AGIOS PHARMACEUTICALS INC 1.0%
Value ($000) $30,632 Shares 641,500 Est. Cost $43.86 Unrealized -13.8%
BLUEPRINT MEDICINES CORP 1.0%
Value ($000) $30,602 Shares 382,000 Est. Cost $75.34 Unrealized
MIRM MIRUM PHARMACEUTICALS INC 1.0%
Value ($000) $30,527 Shares 1,245,000 Est. Cost $11.68 Unrealized -8.7%
AXONICS MODULATION TECH INC 1.0%
Value ($000) $30,481 Shares 1,100,000 Est. Cost $25.39 Unrealized
AMGN AMGEN INC 1.0%
Value ($000) $30,375 Shares 126,000 Est. Cost $158.01 Unrealized +15.6%
RARE ULTRAGENYX PHARMACEUTICAL IN 0.9%
Value ($000) $29,897 Shares 700,000 Est. Cost $55.41 Unrealized -25.5%
ASND ASCENDIS PHARMA A S 0.9%
Value ($000) $29,702 Shares 213,500 Est. Cost $18.03 Unrealized
QURE UNIQURE NV 0.9%
Value ($000) $28,664 Shares 400,000 Est. Cost $56.26 Unrealized -2.4%
ACAD ACADIA PHARMACEUTICALS INC 0.9%
Value ($000) $28,663 Shares 670,000 Est. Cost $39.82 Unrealized +9.2%
BMRN BIOMARIN PHARMACEUTICAL INC 0.9%
Value ($000) $28,536 Shares 337,500 Est. Cost $85.49 Unrealized -11.6%
SEATTLE GENETICS INC 0.9%
Value ($000) $27,651 Shares 242,000 Est. Cost $59.37 Unrealized
TMO THERMO FISHER SCIENTIFIC INC 0.8%
Value ($000) $26,314 Shares 81,000 Est. Cost $165.72 Unrealized +80.1%
DECIPHERA PHARMACEUTICALS IN 0.8%
Value ($000) $26,258 Shares 421,890 Est. Cost $45.47 Unrealized
MEDICINES CO 0.8%
Value ($000) $26,136 Shares 307,699 Est. Cost $32.66 Unrealized
ZLAB ZAI LAB LTD 0.8%
Value ($000) $25,994 Shares 625,000 Est. Cost $29.73 Unrealized
AUDENTES THERAPEUTICS INC 0.8%
Value ($000) $24,534 Shares 410,000 Est. Cost $20.08 Unrealized
WST WEST PHARMACEUTICAL SVSC INC 0.7%
Value ($000) $22,925 Shares 152,500 Est. Cost $96.51 Unrealized +48.5%
MDGL MADRIGAL PHARMACEUTICALS INC 0.7%
Value ($000) $22,796 Shares 250,200 Est. Cost $39.27 Unrealized +146.9%
ALLAKOS INC 0.7%
Value ($000) $22,410 Shares 235,000 Est. Cost $44.99 Unrealized
ACHILLION PHARMACEUTICALS IN 0.7%
Value ($000) $22,221 Shares 3,685,000 Est. Cost $5.66 Unrealized
INCY INCYTE CORP 0.7%
Value ($000) $21,830 Shares 250,000 Est. Cost $68.12 Unrealized +25.4%
PORTOLA PHARMACEUTICALS INC 0.7%
Value ($000) $21,492 Shares 900,000 Est. Cost $39.21 Unrealized
IMMUNOMEDICS INC 0.7%
Value ($000) $21,160 Shares 1,000,000 Est. Cost $17.50 Unrealized
GLOBAL BLOOD THERAPEUTICS IN 0.7%
Value ($000) $21,065 Shares 265,000 Est. Cost $38.46 Unrealized
FRPT FRESHPET INC 0.7%
Value ($000) $20,992 Shares 355,250 Est. Cost $38.49 Unrealized +38.4%
RADIUS HEALTH INC 0.6%
Value ($000) $20,164 Shares 1,000,200 Est. Cost $37.04 Unrealized
INTERSECT ENT INC 0.6%
Value ($000) $19,920 Shares 800,000 Est. Cost $24.99 Unrealized
INVITAE CORP 0.6%
Value ($000) $19,356 Shares 1,200,000 Est. Cost $10.51 Unrealized
INSM INSMED INC 0.6%
Value ($000) $19,104 Shares 800,000 Est. Cost $20.30 Unrealized +0.2%
FORTY SEVEN INC 0.6%
Value ($000) $17,717 Shares 450,000 Est. Cost $39.37 Unrealized
TBPH THERAVANCE BIOPHARMA INC 0.5%
Value ($000) $16,963 Shares 655,200 Est. Cost $20.00 Unrealized -2.8%
ADPT ADAPTIVE BIOTECHNOLOGIES COR 0.5%
Value ($000) $16,306 Shares 545,000 Est. Cost $44.30 Unrealized -35.2%
CI CIGNA CORP NEW 0.5%
Value ($000) $15,337 Shares 75,000 Est. Cost $154.04 Unrealized +8.9%
HQY HEALTHEQUITY INC 0.5%
Value ($000) $15,184 Shares 205,000 Est. Cost $62.38 Unrealized 0.0%
OSW ONESPAWORLD HOLDINGS LIMITED 0.5%
Value ($000) $15,156 Shares 900,000 Est. Cost $15.50 Unrealized 0.0%
PHR PHREESIA INC 0.5%
Value ($000) $15,052 Shares 565,000 Est. Cost $26.83 Unrealized +3.0%
GH GUARDANT HEALTH INC 0.5%
Value ($000) $14,847 Shares 190,000 Est. Cost $38.92 Unrealized +85.2%
NVCR NOVOCURE LTD 0.5%
Value ($000) $14,537 Shares 172,500 Est. Cost $36.98 Unrealized +118.3%
CNC CENTENE CORP DEL 0.5%
Value ($000) $14,448 Shares 229,800 Est. Cost $48.70 Unrealized +11.4%
ODONATE THERAPEUTICS INC 0.4%
Value ($000) $13,954 Shares 430,000 Est. Cost $24.20 Unrealized
KARUNA THERAPEUTICS INC 0.4%
Value ($000) $13,561 Shares 180,000 Est. Cost $20.02 Unrealized
FIBROGEN INC 0.4%
Value ($000) $13,124 Shares 306,000 Est. Cost $29.90 Unrealized
ZOGENIX INC 0.4%
Value ($000) $13,033 Shares 250,000 Est. Cost $38.39 Unrealized
RIGEL PHARMACEUTICALS INC 0.4%
Value ($000) $11,766 Shares 5,497,900 Est. Cost $2.95 Unrealized
MYOKARDIA INC 0.4%
Value ($000) $11,662 Shares 160,000 Est. Cost $72.89 Unrealized
CONSTELLATION PHARMCETICLS I 0.3%
Value ($000) $11,000 Shares 233,500 Est. Cost $47.11 Unrealized
BIOHAVEN PHARMACTL HLDG CO L 0.3%
Value ($000) $10,888 Shares 200,000 Est. Cost $31.69 Unrealized
ARVN ARVINAS INC 0.3%
Value ($000) $10,273 Shares 250,000 Est. Cost $21.59 Unrealized +35.6%
DERMIRA INC 0.3%
Value ($000) $9,854 Shares 650,000 Est. Cost $16.41 Unrealized
FOLD AMICUS THERAPEUTICS INC 0.3%
Value ($000) $9,740 Shares 1,000,000 Est. Cost $11.48 Unrealized -20.2%
BMY BRISTOL MYERS SQUIBB CO 0.3%
Value ($000) $9,629 Shares 150,000 Est. Cost $45.19 Unrealized 0.0%
DYNAVAX TECHNOLOGIES CORP 0.3%
Value ($000) $9,009 Shares 1,575,000 Est. Cost $6.66 Unrealized
HOMOLOGY MEDICINES INC 0.3%
Value ($000) $8,798 Shares 425,000 Est. Cost $18.81 Unrealized
MEDICINES CO 0.3%
Value ($000) $8,735 Shares 5,000,000 Est. Cost $1.05 Unrealized
RETROPHIN INC 0.3%
Value ($000) $8,165 Shares 575,000 Est. Cost $22.85 Unrealized
RYTM RHYTHM PHARMACEUTICALS INC 0.3%
Value ($000) $7,921 Shares 345,000 Est. Cost $25.25 Unrealized -12.0%
MOMENTA PHARMACEUTICALS INC 0.2%
Value ($000) $7,892 Shares 400,000 Est. Cost $19.06 Unrealized
MYOVANT SCIENCES LTD 0.2%
Value ($000) $7,760 Shares 500,000 Est. Cost $14.33 Unrealized
TRANSLATE BIO INC 0.2%
Value ($000) $7,733 Shares 950,000 Est. Cost $12.61 Unrealized
MERSANA THERAPEUTICS INC 0.2%
Value ($000) $7,065 Shares 1,233,000 Est. Cost $11.48 Unrealized
PHASEBIO PHARMACEUTICALS INC 0.2%
Value ($000) $6,874 Shares 1,125,000 Est. Cost $6.46 Unrealized
INTERCEPT PHARMACEUTICALS IN 0.2%
Value ($000) $6,741 Shares 54,400 Est. Cost $78.51 Unrealized
GRTX GALERA THERAPEUTICS INC 0.2%
Value ($000) $6,580 Shares 500,000 Est. Cost $12.19 Unrealized 0.0%
CGEN COMPUGEN LTD 0.2%
Value ($000) $6,556 Shares 1,100,000 Est. Cost $5.48 Unrealized -6.1%
NGM BIOPHARMACEUTICALS INC 0.2%
Value ($000) $6,492 Shares 351,100 Est. Cost $14.64 Unrealized
AEGLEA BIOTHERAPEUTICS INC 0.2%
Value ($000) $6,112 Shares 800,000 Est. Cost $6.36 Unrealized
INSMED INC 0.2%
Value ($000) $5,795 Shares 6,000,000 Est. Cost $0.89 Unrealized
CHIASMA INC 0.2%
Value ($000) $5,754 Shares 1,160,000 Est. Cost $11.18 Unrealized
HCAT HEALTH CATALYST INC 0.2%
Value ($000) $5,552 Shares 160,000 Est. Cost $37.99 Unrealized -12.9%
TXG 10X GENOMICS INC 0.2%
Value ($000) $5,528 Shares 72,500 Est. Cost $55.93 Unrealized +7.5%
RTI SURGICAL HOLDINGS INC 0.2%
Value ($000) $5,343 Shares 1,950,000 Est. Cost $4.35 Unrealized
SPRO SPERO THERAPEUTICS INC 0.2%
Value ($000) $5,048 Shares 525,000 Est. Cost $12.27 Unrealized -12.1%
AKERO THERAPEUTICS INC 0.2%
Value ($000) $4,994 Shares 225,000 Est. Cost $19.15 Unrealized
CORBF GLOBAL CORD BLOOD CORPORATIO 0.1%
Value ($000) $4,625 Shares 925,000 Est. Cost $9.99 Unrealized -52.2%
GAMIDA CELL LTD 0.1%
Value ($000) $4,300 Shares 1,000,000 Est. Cost $5.08 Unrealized
BLUEBIRD BIO INC 0.1%
Value ($000) $3,071 Shares 35,000 Est. Cost $127.01 Unrealized
ACRS ACLARIS THERAPEUTICS INC 0.1%
Value ($000) $3,024 Shares 1,600,000 Est. Cost $9.19 Unrealized -82.0%
OBSEVA SA 0.1%
Value ($000) $3,016 Shares 789,480 Est. Cost $11.02 Unrealized
NABRIVA THERAPEUTICS PLC 0.1%
Value ($000) $2,772 Shares 2,100,000 Est. Cost $4.28 Unrealized
MGNX MACROGENICS INC 0.1%
Value ($000) $2,502 Shares 230,000 Est. Cost $20.97 Unrealized -52.8%
ANAB ANAPTYSBIO INC 0.1%
Value ($000) $2,194 Shares 135,000 Est. Cost $49.70 Unrealized -52.4%
FIVE PRIME THERAPEUTICS INC 0.1%
Value ($000) $1,836 Shares 400,000 Est. Cost $16.45 Unrealized
THERAVANCE BIOPHARMA INC 0.0%
Value ($000) $1,557 Shares 1,500,000 Est. Cost $1.14 Unrealized
NEUROCRINE BIOSCIENCES INC 0.0%
Value ($000) $1,536 Shares 1,000,000 Est. Cost $1.45 Unrealized
PARATEK PHARMACEUTICALS INC 0.0%
Value ($000) $1,511 Shares 375,000 Est. Cost $15.77 Unrealized
RADIUS HEALTH INC 0.0%
Value ($000) $1,274 Shares 1,500,000 Est. Cost $1.01 Unrealized
PACIRA BIOSCIENCES 0.0%
Value ($000) $1,042 Shares 1,000,000 Est. Cost $0.91 Unrealized
ADAPY ADAPTIMMUNE THERAPEUTICS PLC 0.0%
Value ($000) $960 Shares 800,000 Est. Cost $13.74 Unrealized
DERMIRA INC 0.0%
Value ($000) $925 Shares 1,000,000 Est. Cost $0.83 Unrealized
CRVS CORVUS PHARMACEUTICALS INC 0.0%
Value ($000) $816 Shares 150,000 Est. Cost $13.05 Unrealized -73.2%
BRISTOL MYERS SQUIBB CO 0.0%
Value ($000) $557 Shares 185,150 Est. Cost $3.01 Unrealized
APPLIED THERAPEUTICS INC 0.0%
Value ($000) $554 Shares 20,315 Est. Cost $27.27 Unrealized
PFE PFIZER INC 0.0%
Value ($000) $407 Shares 10,400 Est. Cost $26.71 Unrealized 0.0%
COVETRUS INC 0.0%
Value ($000) $273 Shares 20,683 Est. Cost $31.85 Unrealized