The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
ACADIA HEALTHCARE COMPANY IN COM 00404A109 23,158 900,750 SH   SOLE   900,750 0 0
ACHILLION PHARMACEUTICALS IN COM 00448Q201 3,697 2,325,000 SH   SOLE   2,325,000 0 0
ACLARIS THERAPEUTICS INC COM 00461U105 9,824 1,329,400 SH   SOLE   1,329,400 0 0
ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 4,313 750,000 SH   SOLE   750,000 0 0
AEGLEA BIOTHERAPEUTICS INC COM 00773J103 4,869 650,000 SH   SOLE   650,000 0 0
AGILENT TECHNOLOGIES INC COM 00846U101 12,332 182,800 SH   SOLE   182,800 0 0
ALDER BIOPHARMACEUTICALS INC COM 014339105 15,119 1,475,000 SH   SOLE   1,475,000 0 0
ALDER BIOPHARMACEUTICALS INC NOTE 2.500% 2/0 014339AA3 4,001 5,000,000 PRN   SOLE   5,000,000 0 0
ALEXION PHARMACEUTICALS INC COM 015351109 23,610 242,500 SH   SOLE   242,500 0 0
ALIGN TECHNOLOGY INC COM 016255101 21,990 105,000 SH   SOLE   105,000 0 0
ALLAKOS INC COM 01671P100 21,117 404,000 SH   SOLE   404,000 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 14,145 194,000 SH   SOLE   194,000 0 0
AMARIN CORP PLC SPONS ADR NEW 023111206 60,918 4,476,000 SH   SOLE   4,476,000 0 0
AMICUS THERAPEUTICS INC COM 03152W109 9,580 1,000,000 SH   SOLE   1,000,000 0 0
ANAPTYSBIO INC COM 032724106 8,675 136,000 SH   SOLE   136,000 0 0
APTINYX INC COM 03836N103 5,045 305,000 SH   SOLE   305,000 0 0
ARDELYX INC COM 039697107 3,580 2,000,000 SH   SOLE   2,000,000 0 0
ARGENX SE SPONSORED ADR 04016X101 17,100 178,000 SH   SOLE   178,000 0 0
ARVINAS INC COM 04335A105 1,928 150,000 SH   SOLE   150,000 0 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 15,255 243,500 SH   SOLE   243,500 0 0
ASSEMBLY BIOSCIENCES INC COM 045396108 10,179 450,000 SH   SOLE   450,000 0 0
AUDENTES THERAPEUTICS INC COM 05070R104 10,660 500,000 SH   SOLE   500,000 0 0
AXOGEN INC COM 05463X106 12,339 603,970 SH   SOLE   603,970 0 0
AXONICS MODULATION TECH INC COM 05465P101 6,044 400,000 SH   SOLE   400,000 0 0
BAXTER INTL INC COM 071813109 19,792 300,700 SH   SOLE   300,700 0 0
BEIGENE LTD SPONSORED ADR 07725L102 30,128 214,800 SH   SOLE   214,800 0 0
BIOCRYST PHARMACEUTICALS COM 09058V103 5,649 700,000 SH   SOLE   700,000 0 0
BIOGEN INC COM 09062X103 15,046 50,000 SH   SOLE   50,000 0 0
BIOHAVEN PHARMACTL HLDG CO L COM G11196105 9,615 260,000 SH   SOLE   260,000 0 0
BIOMARIN PHARMACEUTICAL INC COM 09061G101 10,984 129,000 SH   SOLE   129,000 0 0
BLUEBIRD BIO INC COM 09609G100 4,464 45,000 SH   SOLE   45,000 0 0
BLUEPRINT MEDICINES CORP COM 09627Y109 11,518 213,658 SH   SOLE   213,658 0 0
BOSTON SCIENTIFIC CORP COM 101137107 32,336 915,000 SH   SOLE   915,000 0 0
CELGENE CORP COM 151020104 11,866 185,150 SH   SOLE   185,150 0 0
CHIASMA INC COM 16706W102 1,633 525,000 SH   SOLE   525,000 0 0
CLEMENTIA PHARMACEUTICALS IN COM 185575107 3,234 275,000 SH   SOLE   275,000 0 0
CLOVIS ONCOLOGY INC COM 189464100 4,598 256,000 SH   SOLE   256,000 0 0
COHERUS BIOSCIENCES INC COM 19249H103 6,064 670,000 SH   SOLE   670,000 0 0
COLLEGIUM PHARMACEUTICAL INC COM 19459J104 27,560 1,605,105 SH   SOLE   1,605,105 0 0
COMPUGEN LTD ORD M25722105 2,387 1,100,000 SH   SOLE   1,100,000 0 0
CORREVIO PHARMA CORP COM 22026V105 2,988 1,200,000 SH   SOLE   1,200,000 0 0
CORVUS PHARMACEUTICALS INC COM 221015100 1,468 400,000 SH   SOLE   400,000 0 0
CYMABAY THERAPEUTICS INC COM 23257D103 4,829 613,604 SH   SOLE   613,604 0 0
DAVITA INC COM 23918K108 11,074 215,200 SH   SOLE   215,200 0 0
DERMIRA INC COM 24983L104 3,717 517,000 SH   SOLE   517,000 0 0
DERMIRA INC NOTE 3.000% 5/1 24983LAB0 775 1,000,000 PRN   SOLE   1,000,000 0 0
DYNAVAX TECHNOLOGIES CORP COM NEW 268158201 3,477 380,000 SH   SOLE   380,000 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 28,107 183,500 SH   SOLE   183,500 0 0
ENCOMPASS HEALTH CORP COM 29261A100 44,733 725,000 SH   SOLE   725,000 0 0
EPIZYME INC COM 29428V104 9,902 1,607,500 SH   SOLE   1,607,500 0 0
EXACT SCIENCES CORP COM 30063P105 24,294 385,000 SH   SOLE   385,000 0 0
EXELIXIS INC COM 30161Q104 12,223 621,400 SH   SOLE   621,400 0 0
FIBROGEN INC COM 31572Q808 14,162 306,000 SH   SOLE   306,000 0 0
FIVE PRIME THERAPEUTICS INC COM 33830X104 4,697 505,000 SH   SOLE   505,000 0 0
FRESHPET INC COM 358039105 7,558 235,000 SH   SOLE   235,000 0 0
G1 THERAPEUTICS INC COM 3621LQ109 1,915 100,000 SH   SOLE   100,000 0 0
GALAPAGOS NV SPON ADR 36315X101 16,284 177,500 SH   SOLE   177,500 0 0
GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 10,057 245,000 SH   SOLE   245,000 0 0
GLOBAL CORD BLOOD CORPORATIO SHS G39342103 5,966 925,000 SH   SOLE   925,000 0 0
GUARDANT HEALTH INC COM 40131M109 8,119 216,000 SH   SOLE   216,000 0 0
GW PHARMACEUTICALS PLC ADS 36197T103 58,385 599,500 SH   SOLE   599,500 0 0
HCA HEALTHCARE INC COM 40412C101 56,625 455,000 SH   SOLE   455,000 0 0
HERON THERAPEUTICS INC COM 427746102 13,619 525,000 SH   SOLE   525,000 0 0
HOMOLOGY MEDICINES INC COM 438083107 10,062 450,000 SH   SOLE   450,000 0 0
IDEXX LABS INC COM 45168D104 20,555 110,500 SH   SOLE   110,500 0 0
IMMUNOMEDICS INC COM 452907108 11,131 780,000 SH   SOLE   780,000 0 0
INCYTE CORP COM 45337C102 19,713 310,000 SH   SOLE   310,000 0 0
INFLARX NV COM N44821101 7,925 217,900 SH   SOLE   217,900 0 0
INOGEN INC COM 45780L104 14,528 117,000 SH   SOLE   117,000 0 0
INSMED INC COM PAR $.01 457669307 11,152 850,000 SH   SOLE   850,000 0 0
INSMED INC NOTE 1.750% 1/1 457669AA7 4,296 6,000,000 PRN   SOLE   6,000,000 0 0
INTERSECT ENT INC COM 46071F103 13,104 465,000 SH   SOLE   465,000 0 0
INTUITIVE SURGICAL INC COM NEW 46120E602 72,796 152,000 SH   SOLE   152,000 0 0
INVITAE CORP COM 46185L103 15,484 1,400,000 SH   SOLE   1,400,000 0 0
IRHYTHM TECHNOLOGIES INC COM 450056106 33,489 482,000 SH   SOLE   482,000 0 0
LA JOLLA PHARMACEUTICAL CO COM PAR $.0001 2 503459604 2,614 277,236 SH   SOLE   277,236 0 0
LOXO ONCOLOGY INC COM 548862101 33,827 241,500 SH   SOLE   241,500 0 0
MACROGENICS INC COM 556099109 1,028 80,981 SH   SOLE   80,981 0 0
MADRIGAL PHARMACEUTICALS INC COM 558868105 27,166 241,000 SH   SOLE   241,000 0 0
MEDICINES CO COM 584688105 13,913 726,900 SH   SOLE   726,900 0 0
MEDICINES CO NOTE 2.500% 1/1 584688AE5 2,589 3,000,000 PRN   SOLE   3,000,000 0 0
MEDICINES CO NOTE 2.750% 7/1 584688AG0 3,793 5,000,000 PRN   SOLE   5,000,000 0 0
MERSANA THERAPEUTICS INC COM 59045L106 4,080 1,000,000 SH   SOLE   1,000,000 0 0
MIRATI THERAPEUTICS INC COM 60468T105 6,363 150,000 SH   SOLE   150,000 0 0
MOLINA HEALTHCARE INC COM 60855R100 39,747 342,000 SH   SOLE   342,000 0 0
MOMENTA PHARMACEUTICALS INC COM 60877T100 4,416 400,000 SH   SOLE   400,000 0 0
MYOVANT SCIENCES LTD COM G637AM102 5,702 347,500 SH   SOLE   347,500 0 0
NABRIVA THERAPEUTICS PLC SHS G63637105 2,336 1,600,000 SH   SOLE   1,600,000 0 0
NEUROCRINE BIOSCIENCES INC COM 64125C109 56,314 788,600 SH   SOLE   788,600 0 0
NEUROCRINE BIOSCIENCES INC NOTE 2.250% 5/1 64125CAD1 1,196 1,000,000 PRN   SOLE   1,000,000 0 0
NOVAVAX INC COM 670002104 5,980 3,250,000 SH   SOLE   3,250,000 0 0
NOVOCURE LTD ORD SHS G6674U108 6,529 195,000 SH   SOLE   195,000 0 0
OBSEVA SA COM H5861P103 14,179 1,120,000 SH   SOLE   1,120,000 0 0
ODONATE THERAPEUTICS INC COM 676079106 6,266 445,000 SH   SOLE   445,000 0 0
PACIRA PHARMACEUTICALS INC COM 695127100 53,775 1,250,000 SH   SOLE   1,250,000 0 0
PACIRA PHARMACEUTICALS INC NOTE 2.375% 4/0 695127AD2 994 1,000,000 PRN   SOLE   1,000,000 0 0
PARATEK PHARMACEUTICALS INC COM 699374302 2,309 450,000 SH   SOLE   450,000 0 0
PENUMBRA INC COM 70975L107 27,495 225,000 SH   SOLE   225,000 0 0
PHASEBIO PHARMACEUTICALS INC COM 717224109 2,580 835,000 SH   SOLE   835,000 0 0
PORTOLA PHARMACEUTICALS INC COM 737010108 5,856 300,000 SH   SOLE   300,000 0 0
PRA HEALTH SCIENCES INC COM 69354M108 18,392 200,000 SH   SOLE   200,000 0 0
PROTEOSTASIS THERAPEUTICS IN COM 74373B109 1,296 400,000 SH   SOLE   400,000 0 0
PUMA BIOTECHNOLOGY INC COM 74587V107 9,289 456,462 SH   SOLE   456,462 0 0
RA PHARMACEUTICALS INC COM 74933V108 13,650 750,000 SH   SOLE   750,000 0 0
RADIUS HEALTH INC COM NEW 750469207 18,139 1,100,000 SH   SOLE   1,100,000 0 0
RADIUS HEALTH INC NOTE 3.000% 9/0 750469AA6 1,157 1,500,000 PRN   SOLE   1,500,000 0 0
RESTORBIO INC COM 76133L103 3,448 400,000 SH   SOLE   400,000 0 0
RETROPHIN INC COM 761299106 9,052 400,000 SH   SOLE   400,000 0 0
RHYTHM PHARMACEUTICALS INC COM 76243J105 5,820 216,500 SH   SOLE   216,500 0 0
RIGEL PHARMACEUTICALS INC COM NEW 766559603 9,660 4,200,000 SH   SOLE   4,200,000 0 0
RTI SURGICAL INC COM 74975N105 7,215 1,950,000 SH   SOLE   1,950,000 0 0
SAGE THERAPEUTICS INC COM 78667J108 4,694 49,000 SH   SOLE   49,000 0 0
SAREPTA THERAPEUTICS INC COM 803607100 35,686 327,000 SH   SOLE   327,000 0 0
SEATTLE GENETICS INC COM 812578102 11,474 202,500 SH   SOLE   202,500 0 0
SOLID BIOSCIENCES INC COM 83422E105 1,581 58,999 SH   SOLE   58,999 0 0
SPARK THERAPEUTICS INC COM 84652J103 21,038 537,500 SH   SOLE   537,500 0 0
SPERO THERAPEUTICS INC COM 84833T103 3,229 525,000 SH   SOLE   525,000 0 0
STRYKER CORP COM 863667101 28,058 179,000 SH   SOLE   179,000 0 0
TELEFLEX INC COM 879369106 33,602 130,000 SH   SOLE   130,000 0 0
TESARO INC COM 881569107 44,676 601,700 SH   SOLE   601,700 0 0
THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 1,547 1,500,000 PRN   SOLE   1,500,000 0 0
THERAVANCE BIOPHARMA INC COM G8807B106 14,075 550,000 SH   SOLE   550,000 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 21,484 96,000 SH   SOLE   96,000 0 0
TRANSLATE BIO INC COM 89374L104 7,569 1,009,179 SH   SOLE   1,009,179 0 0
ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 18,479 425,000 SH   SOLE   425,000 0 0
UNITEDHEALTH GROUP INC COM 91324P102 150,244 603,100 SH   SOLE   603,100 0 0
VERTEX PHARMACEUTICALS INC COM 92532F100 33,639 203,000 SH   SOLE   203,000 0 0
WELLCARE HEALTH PLANS INC COM 94946T106 91,957 389,500 SH   SOLE   389,500 0 0
WEST PHARMACEUTICAL SVSC INC COM 955306105 15,685 160,000 SH   SOLE   160,000 0 0
WRIGHT MED GROUP N V ORD SHS 0.03 PAR N96617118 27,220 1,000,000 SH   SOLE   1,000,000 0 0
ZAI LAB LTD ADR 98887Q104 8,127 350,000 SH   SOLE   350,000 0 0
ZIMMER BIOMET HLDGS INC COM 98956P102 12,187 117,500 SH   SOLE   117,500 0 0
ZOGENIX INC COM NEW 98978L204 8,568 235,000 SH   SOLE   235,000 0 0