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 27,112 925,000 SH   SOLE   925,000 0 0
ACHILLION PHARMACEUTICALS IN COM 00448Q201 7,992 2,700,000 SH   SOLE   2,700,000 0 0
ACLARIS THERAPEUTICS INC COM 00461U105 10,183 1,700,000 SH   SOLE   1,700,000 0 0
ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 3,440 800,000 SH   SOLE   800,000 0 0
AEGLEA BIOTHERAPEUTICS INC COM 00773J103 6,440 800,000 SH   SOLE   800,000 0 0
AGILENT TECHNOLOGIES INC COM 00846U101 14,693 182,800 SH   SOLE   182,800 0 0
AGIOS PHARMACEUTICALS INC COM 00847X104 7,924 117,500 SH   SOLE   117,500 0 0
ALDER BIOPHARMACEUTICALS INC COM 014339105 21,294 1,560,000 SH   SOLE   1,560,000 0 0
ALDER BIOPHARMACEUTICALS INC NOTE 2.500% 2/0 014339AA3 4,798 5,000,000 PRN   SOLE   5,000,000 0 0
ALEXION PHARMACEUTICALS INC COM 015351109 32,781 242,500 SH   SOLE   242,500 0 0
ALIGN TECHNOLOGY INC COM 016255101 29,855 105,000 SH   SOLE   105,000 0 0
ALLAKOS INC COM 01671P100 16,362 404,000 SH   SOLE   404,000 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 21,821 233,500 SH   SOLE   233,500 0 0
AMARIN CORP PLC SPONS ADR NEW 023111206 93,939 4,525,000 SH   SOLE   4,525,000 0 0
AMICUS THERAPEUTICS INC COM 03152W109 13,600 1,000,000 SH   SOLE   1,000,000 0 0
ANAPTYSBIO INC COM 032724106 12,419 170,000 SH   SOLE   170,000 0 0
ANTHEM INC COM 036752103 5,740 20,000 SH   SOLE   20,000 0 0
ARDELYX INC COM 039697107 5,600 2,000,000 SH   SOLE   2,000,000 0 0
ARGENX SE SPONSORED ADR 04016X101 22,683 181,700 SH   SOLE   181,700 0 0
ARVINAS INC COM 04335A105 2,214 150,000 SH   SOLE   150,000 0 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 25,129 213,500 SH   SOLE   213,500 0 0
ASSEMBLY BIOSCIENCES INC COM 045396108 8,861 450,000 SH   SOLE   450,000 0 0
AUDENTES THERAPEUTICS INC COM 05070R104 20,388 522,500 SH   SOLE   522,500 0 0
AXOGEN INC COM 05463X106 12,720 603,970 SH   SOLE   603,970 0 0
AXONICS MODULATION TECH INC COM 05465P101 9,580 400,000 SH   SOLE   400,000 0 0
BAXTER INTL INC COM 071813109 24,450 300,700 SH   SOLE   300,700 0 0
BEIGENE LTD SPONSORED ADR 07725L102 28,354 214,800 SH   SOLE   214,800 0 0
BIOCRYST PHARMACEUTICALS COM 09058V103 5,698 700,000 SH   SOLE   700,000 0 0
BIOGEN INC COM 09062X103 23,047 97,500 SH Call SOLE   97,500 0 0
BIOHAVEN PHARMACTL HLDG CO L COM G11196105 13,382 260,000 SH   SOLE   260,000 0 0
BIOMARIN PHARMACEUTICAL INC COM 09061G101 11,992 135,000 SH   SOLE   135,000 0 0
BLUEBIRD BIO INC COM 09609G100 7,080 45,000 SH   SOLE   45,000 0 0
BLUEPRINT MEDICINES CORP COM 09627Y109 22,014 275,000 SH   SOLE   275,000 0 0
BOSTON SCIENTIFIC CORP COM 101137107 37,229 970,000 SH   SOLE   970,000 0 0
CELGENE CORP COM 151020104 17,467 185,150 SH   SOLE   185,150 0 0
CHIASMA INC COM 16706W102 3,380 650,000 SH   SOLE   650,000 0 0
CIGNA CORP NEW COM 125523100 14,474 90,000 SH   SOLE   90,000 0 0
CLEMENTIA PHARMACEUTICALS IN COM 185575107 7,178 275,000 SH   SOLE   275,000 0 0
CLOVIS ONCOLOGY INC COM 189464100 6,354 256,000 SH   SOLE   256,000 0 0
COHERUS BIOSCIENCES INC COM 19249H103 9,139 670,000 SH   SOLE   670,000 0 0
COLLEGIUM PHARMACEUTICAL INC COM 19459J104 23,889 1,577,893 SH   SOLE   1,577,893 0 0
COMPUGEN LTD ORD M25722105 4,554 1,100,000 SH   SOLE   1,100,000 0 0
CORREVIO PHARMA CORP COM 22026V105 3,792 1,200,000 SH   SOLE   1,200,000 0 0
CORVUS PHARMACEUTICALS INC COM 221015100 1,608 400,000 SH   SOLE   400,000 0 0
COVETRUS INC COM 22304C100 20,703 650,000 SH   SOLE   650,000 0 0
CYMABAY THERAPEUTICS INC COM 23257D103 9,495 715,000 SH   SOLE   715,000 0 0
DERMIRA INC COM 24983L104 10,501 775,000 SH   SOLE   775,000 0 0
DERMIRA INC NOTE 3.000% 5/1 24983LAB0 888 1,000,000 PRN   SOLE   1,000,000 0 0
DYNAVAX TECHNOLOGIES CORP COM NEW 268158201 2,778 380,000 SH   SOLE   380,000 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 35,109 183,500 SH   SOLE   183,500 0 0
ENCOMPASS HEALTH CORP COM 29261A100 46,720 800,000 SH   SOLE   800,000 0 0
EPIZYME INC COM 29428V104 21,724 1,753,375 SH   SOLE   1,753,375 0 0
EXACT SCIENCES CORP COM 30063P105 34,388 397,000 SH   SOLE   397,000 0 0
FIBROGEN INC COM 31572Q808 16,631 306,000 SH   SOLE   306,000 0 0
FIVE PRIME THERAPEUTICS INC COM 33830X104 6,767 505,000 SH   SOLE   505,000 0 0
FRESHPET INC COM 358039105 9,938 235,000 SH   SOLE   235,000 0 0
GALAPAGOS NV SPON ADR 36315X101 19,434 165,000 SH   SOLE   165,000 0 0
GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 12,968 245,000 SH   SOLE   245,000 0 0
GLOBAL CORD BLOOD CORPORATIO SHS G39342103 6,494 925,000 SH   SOLE   925,000 0 0
GUARDANT HEALTH INC COM 40131M109 13,806 180,000 SH   SOLE   180,000 0 0
GW PHARMACEUTICALS PLC ADS 36197T103 117,999 700,000 SH   SOLE   700,000 0 0
HCA HEALTHCARE INC COM 40412C101 59,323 455,000 SH   SOLE   455,000 0 0
HERON THERAPEUTICS INC COM 427746102 8,554 350,000 SH   SOLE   350,000 0 0
HOMOLOGY MEDICINES INC COM 438083107 10,260 370,000 SH   SOLE   370,000 0 0
IDEXX LABS INC COM 45168D104 26,877 120,200 SH   SOLE   120,200 0 0
IMMUNOMEDICS INC COM 452907108 15,368 800,000 SH   SOLE   800,000 0 0
INCYTE CORP COM 45337C102 26,861 312,300 SH   SOLE   312,300 0 0
INFLARX NV COM N44821101 8,503 225,000 SH   SOLE   225,000 0 0
INSMED INC COM PAR $.01 457669307 24,710 850,000 SH   SOLE   850,000 0 0
INSMED INC NOTE 1.750% 1/1 457669AA7 6,082 6,000,000 PRN   SOLE   6,000,000 0 0
INTERSECT ENT INC COM 46071F103 14,950 465,000 SH   SOLE   465,000 0 0
INTUITIVE SURGICAL INC COM NEW 46120E602 87,013 152,500 SH   SOLE   152,500 0 0
INVITAE CORP COM 46185L103 26,933 1,150,000 SH   SOLE   1,150,000 0 0
IRHYTHM TECHNOLOGIES INC COM 450056106 37,451 499,615 SH   SOLE   499,615 0 0
KALEIDO BIOSCIENCES INC COM 483347100 1,451 100,050 SH   SOLE   100,050 0 0
LA JOLLA PHARMACEUTICAL CO COM PAR $.0001 2 503459604 1,783 277,236 SH   SOLE   277,236 0 0
MACROGENICS INC COM 556099109 5,394 300,000 SH   SOLE   300,000 0 0
MADRIGAL PHARMACEUTICALS INC COM 558868105 31,973 255,250 SH   SOLE   255,250 0 0
MEDICINES CO COM 584688105 20,387 729,400 SH   SOLE   729,400 0 0
MEDICINES CO NOTE 2.500% 1/1 584688AE5 3,013 3,000,000 PRN   SOLE   3,000,000 0 0
MEDICINES CO NOTE 2.750% 7/1 584688AG0 4,231 5,000,000 PRN   SOLE   5,000,000 0 0
MERSANA THERAPEUTICS INC COM 59045L106 7,364 1,400,000 SH   SOLE   1,400,000 0 0
MIRATI THERAPEUTICS INC COM 60468T105 13,194 180,000 SH   SOLE   180,000 0 0
MOLINA HEALTHCARE INC COM 60855R100 29,457 207,500 SH   SOLE   207,500 0 0
MOMENTA PHARMACEUTICALS INC COM 60877T100 5,812 400,000 SH   SOLE   400,000 0 0
MYOVANT SCIENCES LTD COM G637AM102 8,295 347,500 SH   SOLE   347,500 0 0
NABRIVA THERAPEUTICS PLC SHS G63637105 3,904 1,600,000 SH   SOLE   1,600,000 0 0
NEUROCRINE BIOSCIENCES INC COM 64125C109 74,400 844,500 SH   SOLE   844,500 0 0
NEUROCRINE BIOSCIENCES INC NOTE 2.250% 5/1 64125CAD1 1,354 1,000,000 PRN   SOLE   1,000,000 0 0
NEVRO CORP COM 64157F103 2,169 34,700 SH   SOLE   34,700 0 0
NOVAVAX INC COM 670002104 1,790 3,250,000 SH   SOLE   3,250,000 0 0
NOVOCURE LTD ORD SHS G6674U108 9,393 195,000 SH   SOLE   195,000 0 0
OBSEVA SA COM H5861P103 14,325 1,120,000 SH   SOLE   1,120,000 0 0
ODONATE THERAPEUTICS INC COM 676079106 9,839 445,000 SH   SOLE   445,000 0 0
PACIRA PHARMACEUTICALS INC COM 695127100 47,575 1,250,000 SH   SOLE   1,250,000 0 0
PACIRA PHARMACEUTICALS INC NOTE 2.375% 4/0 695127AD2 987 1,000,000 PRN   SOLE   1,000,000 0 0
PARATEK PHARMACEUTICALS INC COM 699374302 2,412 450,000 SH   SOLE   450,000 0 0
PENUMBRA INC COM 70975L107 33,077 225,000 SH   SOLE   225,000 0 0
PHASEBIO PHARMACEUTICALS INC COM 717224109 10,841 1,140,000 SH   SOLE   1,140,000 0 0
PORTOLA PHARMACEUTICALS INC COM 737010108 30,363 875,000 SH   SOLE   875,000 0 0
PRA HEALTH SCIENCES INC COM 69354M108 26,470 240,000 SH   SOLE   240,000 0 0
PROTEOSTASIS THERAPEUTICS IN COM 74373B109 504 400,000 SH   SOLE   400,000 0 0
PUMA BIOTECHNOLOGY INC COM 74587V107 17,766 458,000 SH   SOLE   458,000 0 0
RA PHARMACEUTICALS INC COM 74933V108 18,010 804,000 SH   SOLE   804,000 0 0
RADIUS HEALTH INC COM NEW 750469207 23,430 1,175,000 SH   SOLE   1,175,000 0 0
RADIUS HEALTH INC NOTE 3.000% 9/0 750469AA6 1,249 1,500,000 PRN   SOLE   1,500,000 0 0
RESTORBIO INC COM 76133L103 2,728 400,000 SH   SOLE   400,000 0 0
RETROPHIN INC COM 761299106 18,783 830,000 SH   SOLE   830,000 0 0
RHYTHM PHARMACEUTICALS INC COM 76243J105 5,934 216,500 SH   SOLE   216,500 0 0
RIGEL PHARMACEUTICALS INC COM NEW 766559603 10,794 4,200,000 SH   SOLE   4,200,000 0 0
RTI SURGICAL HOLDINGS INC COM 74975N105 11,720 1,950,000 SH   SOLE   1,950,000 0 0
SAGE THERAPEUTICS INC COM 78667J108 14,712 92,500 SH   SOLE   92,500 0 0
SAREPTA THERAPEUTICS INC COM 803607100 39,869 334,500 SH   SOLE   334,500 0 0
SEATTLE GENETICS INC COM 812578102 17,724 242,000 SH   SOLE   242,000 0 0
SOLID BIOSCIENCES INC COM 83422E105 552 60,000 SH   SOLE   60,000 0 0
SPARK THERAPEUTICS INC COM 84652J103 61,211 537,500 SH   SOLE   537,500 0 0
SPERO THERAPEUTICS INC COM 84833T103 6,725 525,000 SH   SOLE   525,000 0 0
STRYKER CORP COM 863667101 35,356 179,000 SH   SOLE   179,000 0 0
TELEFLEX INC COM 879369106 39,281 130,000 SH   SOLE   130,000 0 0
THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 1,457 1,500,000 PRN   SOLE   1,500,000 0 0
THERAVANCE BIOPHARMA INC COM G8807B106 12,469 550,000 SH   SOLE   550,000 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 22,171 81,000 SH   SOLE   81,000 0 0
TRANSLATE BIO INC COM 89374L104 10,284 1,009,179 SH   SOLE   1,009,179 0 0
ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 40,229 580,000 SH   SOLE   580,000 0 0
UNITEDHEALTH GROUP INC COM 91324P102 146,131 591,000 SH   SOLE   591,000 0 0
VERTEX PHARMACEUTICALS INC COM 92532F100 37,342 203,000 SH   SOLE   203,000 0 0
WELLCARE HEALTH PLANS INC COM 94946T106 86,320 320,000 SH   SOLE   320,000 0 0
WEST PHARMACEUTICAL SVSC INC COM 955306105 13,775 125,000 SH   SOLE   125,000 0 0
WRIGHT MED GROUP N V ORD SHS N96617118 28,953 920,608 SH   SOLE   920,608 0 0
ZAI LAB LTD ADR 98887Q104 12,199 413,400 SH   SOLE   413,400 0 0
ZOGENIX INC COM NEW 98978L204 12,927 235,000 SH   SOLE   235,000 0 0