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
ABBVIE INC COM 00287Y109 55,590 600,000 SH   SOLE   600,000 0 0
ACADIA HEALTHCARE COMPANY IN COM 00404A109 51,281 1,253,500 SH   SOLE   1,253,500 0 0
ACHILLION PHARMACEUTICALS IN COM 00448Q201 6,651 2,350,000 SH   SOLE   2,350,000 0 0
ACLARIS THERAPEUTICS INC COM 00461U105 17,094 856,000 SH   SOLE   856,000 0 0
ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 8,903 750,000 SH   SOLE   750,000 0 0
ADVERUM BIOTECHNOLOGIES INC COM 00773U108 4,770 900,000 SH   SOLE   900,000 0 0
AEGLEA BIOTHERAPEUTICS INC COM 00773J103 6,877 650,000 SH   SOLE   650,000 0 0
AGILENT TECHNOLOGIES INC COM 00846U101 10,123 163,700 SH   SOLE   163,700 0 0
ALDER BIOPHARMACEUTICALS INC COM 014339105 24,727 1,565,000 SH   SOLE   1,565,000 0 0
ALDER BIOPHARMACEUTICALS INC NOTE 2.500% 2/0 014339AA3 5,207 5,000,000 PRN   SOLE   5,000,000 0 0
ALEXION PHARMACEUTICALS INC COM 015351109 61,144 492,500 SH   SOLE   492,500 0 0
ALIGN TECHNOLOGY INC COM 016255101 22,581 66,000 SH   SOLE   66,000 0 0
ALLERGAN PLC SHS G0177J108 2,945 17,665 SH   SOLE   17,665 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 17,088 173,500 SH   SOLE   173,500 0 0
AMARIN CORP PLC SPONS ADR NEW 023111206 12,360 4,000,000 SH   SOLE   4,000,000 0 0
AMERISOURCEBERGEN CORP COM 03073E105 18,759 220,000 SH   SOLE   220,000 0 0
AMICUS THERAPEUTICS INC COM 03152W109 15,620 1,000,000 SH   SOLE   1,000,000 0 0
ANAPTYSBIO INC COM 032724106 10,656 150,000 SH   SOLE   150,000 0 0
APTINYX INC COM 03836N103 8,218 340,000 SH   SOLE   340,000 0 0
ARDELYX INC COM 039697107 9,345 2,525,557 SH   SOLE   2,525,557 0 0
ARENA PHARMACEUTICALS INC COM NEW 040047607 16,350 375,000 SH   SOLE   375,000 0 0
ARGENX SE SPONSORED ADR 04016X101 10,668 128,750 SH   SOLE   128,750 0 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 16,198 243,500 SH   SOLE   243,500 0 0
ASSEMBLY BIOSCIENCES INC COM 045396108 17,645 450,000 SH   SOLE   450,000 0 0
AUDENTES THERAPEUTICS INC COM 05070R104 16,812 440,000 SH   SOLE   440,000 0 0
AXOGEN INC COM 05463X106 27,386 545,000 SH   SOLE   545,000 0 0
BAXTER INTL INC COM 071813109 21,930 297,000 SH   SOLE   297,000 0 0
BEIGENE LTD SPONSORED ADR 07725L102 33,052 215,000 SH   SOLE   215,000 0 0
BIOCRYST PHARMACEUTICALS COM 09058V103 1,433 250,000 SH   SOLE   250,000 0 0
BIOGEN INC COM 09062X103 15,383 53,000 SH   SOLE   53,000 0 0
BIOHAVEN PHARMACTL HLDG CO L COM G11196105 15,709 397,500 SH   SOLE   397,500 0 0
BIOMARIN PHARMACEUTICAL INC COM 09061G101 11,775 125,000 SH   SOLE   125,000 0 0
BLUEBIRD BIO INC COM 09609G100 7,063 45,000 SH   SOLE   45,000 0 0
BLUEPRINT MEDICINES CORP COM 09627Y109 12,633 199,000 SH   SOLE   199,000 0 0
BOSTON SCIENTIFIC CORP COM 101137107 5,641 172,500 SH   SOLE   172,500 0 0
CELGENE CORP COM 151020104 28,623 360,400 SH   SOLE   360,400 0 0
CHIASMA INC COM 16706W102 788 525,000 SH   SOLE   525,000 0 0
CIDARA THERAPEUTICS INC COM 171757107 1,560 300,000 SH   SOLE   300,000 0 0
CLEARSIDE BIOMEDICAL INC COM 185063104 10,423 975,000 SH   SOLE   975,000 0 0
CLEMENTIA PHARMACEUTICALS IN COM 185575107 4,540 345,000 SH   SOLE   345,000 0 0
CLOVIS ONCOLOGY INC COM 189464100 11,595 255,000 SH   SOLE   255,000 0 0
COHERUS BIOSCIENCES INC COM 19249H103 9,660 690,000 SH   SOLE   690,000 0 0
COLLEGIUM PHARMACEUTICAL INC COM 19459J104 39,353 1,650,000 SH   SOLE   1,650,000 0 0
COMPUGEN LTD ORD M25722105 3,558 1,078,165 SH   SOLE   1,078,165 0 0
CORREVIO PHARMA CORP COM 22026V105 4,536 1,200,000 SH   SOLE   1,200,000 0 0
CORVUS PHARMACEUTICALS INC COM 221015100 6,314 575,000 SH   SOLE   575,000 0 0
CYMABAY THERAPEUTICS INC COM 23257D103 7,784 580,000 SH   SOLE   580,000 0 0
DAVITA INC COM 23918K108 28,366 408,500 SH   SOLE   408,500 0 0
DERMIRA INC COM 24983L104 5,520 600,000 SH   SOLE   600,000 0 0
DERMIRA INC NOTE 3.000% 5/1 24983LAB0 827 1,000,000 PRN   SOLE   1,000,000 0 0
DYNAVAX TECHNOLOGIES CORP COM NEW 268158201 4,087 268,000 SH   SOLE   268,000 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 24,019 165,000 SH   SOLE   165,000 0 0
EGALET CORP NOTE 5.500% 4/0 28226BAB0 2,841 7,800,000 PRN   SOLE   7,800,000 0 0
ENCOMPASS HEALTH CORP COM 29261A100 30,474 450,000 SH   SOLE   450,000 0 0
ENDOCYTE INC COM 29269A102 9,315 675,000 SH   SOLE   675,000 0 0
ENVISION HEALTHCARE CORP COM 29414D100 4,854 110,300 SH   SOLE   110,300 0 0
EPIZYME INC COM 29428V104 16,819 1,241,253 SH   SOLE   1,241,253 0 0
EXACT SCIENCES CORP COM 30063P105 22,720 380,000 SH   SOLE   380,000 0 0
EXELIXIS INC COM 30161Q104 12,804 595,000 SH   SOLE   595,000 0 0
FIBROGEN INC COM 31572Q808 19,218 307,000 SH   SOLE   307,000 0 0
FIVE PRIME THERAPEUTICS INC COM 33830X104 9,375 593,000 SH   SOLE   593,000 0 0
G1 THERAPEUTICS INC COM 3621LQ109 13,038 300,000 SH   SOLE   300,000 0 0
GALAPAGOS NV SPON ADR 36315X101 17,053 185,000 SH   SOLE   185,000 0 0
GILEAD SCIENCES INC COM 375558103 25,857 365,000 SH   SOLE   365,000 0 0
GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 6,780 150,000 SH   SOLE   150,000 0 0
GLOBAL CORD BLOOD CORPORATIO SHS G39342103 8,351 880,000 SH   SOLE   880,000 0 0
GTX INC DEL COM NEW 40052B207 5,420 354,000 SH   SOLE   354,000 0 0
GW PHARMACEUTICALS PLC ADS 36197T103 61,398 440,000 SH   SOLE   440,000 0 0
HCA HEALTHCARE INC COM 40412C101 44,118 430,000 SH   SOLE   430,000 0 0
HERON THERAPEUTICS INC COM 427746102 20,396 525,000 SH   SOLE   525,000 0 0
HOLOGIC INC COM 436440101 15,900 400,000 SH   SOLE   400,000 0 0
HOMOLOGY MEDICINES INC COM 438083107 9,588 470,000 SH   SOLE   470,000 0 0
IDEXX LABS INC COM 45168D104 15,692 72,000 SH   SOLE   72,000 0 0
IMMUNOMEDICS INC COM 452907108 11,835 500,000 SH   SOLE   500,000 0 0
INCYTE CORP COM 45337C102 19,832 296,000 SH   SOLE   296,000 0 0
INOGEN INC COM 45780L104 22,173 119,000 SH   SOLE   119,000 0 0
INSMED INC COM PAR $.01 457669307 19,511 825,000 SH   SOLE   825,000 0 0
INSMED INC NOTE 1.750% 1/1 457669AA7 5,531 6,000,000 PRN   SOLE   6,000,000 0 0
INTERSECT ENT INC COM 46071F103 15,355 410,000 SH   SOLE   410,000 0 0
INTRA CELLULAR THERAPIES INC COM 46116X101 3,313 187,500 SH   SOLE   187,500 0 0
INTUITIVE SURGICAL INC COM NEW 46120E602 67,896 141,900 SH   SOLE   141,900 0 0
INVITAE CORP COM 46185L103 10,290 1,400,000 SH   SOLE   1,400,000 0 0
IRHYTHM TECHNOLOGIES INC COM 450056106 38,942 480,000 SH   SOLE   480,000 0 0
JAZZ PHARMACEUTICALS PLC SHS USD G50871105 16,885 98,000 SH   SOLE   98,000 0 0
KINIKSA PHARMACEUTICALS LTD COM CL A G5269C101 1,562 90,000 SH   SOLE   90,000 0 0
KURA ONCOLOGY INC COM 50127T109 7,280 400,000 SH   SOLE   400,000 0 0
LA JOLLA PHARMACEUTICAL CO COM PAR $.0001 2 503459604 6,484 222,300 SH   SOLE   222,300 0 0
LOXO ONCOLOGY INC COM 548862101 50,292 289,900 SH   SOLE   289,900 0 0
MACROGENICS INC COM 556099109 5,679 275,000 SH   SOLE   275,000 0 0
MADRIGAL PHARMACEUTICALS INC COM 558868105 95,738 342,300 SH   SOLE   342,300 0 0
MCKESSON CORP COM 58155Q103 667 5,000 SH   SOLE   5,000 0 0
MEDICINES CO COM 584688105 25,323 690,000 SH   SOLE   690,000 0 0
MEDICINES CO NOTE 2.500% 1/1 584688AE5 3,660 3,000,000 PRN   SOLE   3,000,000 0 0
MEDICINES CO NOTE 2.750% 7/1 584688AG0 5,052 5,000,000 PRN   SOLE   5,000,000 0 0
MENLO THERAPEUTICS INC COM 586858102 2,680 330,000 SH   SOLE   330,000 0 0
MERSANA THERAPEUTICS INC COM 59045L106 17,860 1,000,000 SH   SOLE   1,000,000 0 0
MIRATI THERAPEUTICS INC COM 60468T105 11,832 240,000 SH   SOLE   240,000 0 0
MOLINA HEALTHCARE INC COM 60855R100 53,377 545,000 SH   SOLE   545,000 0 0
MOMENTA PHARMACEUTICALS INC COM 60877T100 9,254 452,500 SH   SOLE   452,500 0 0
MYOVANT SCIENCES LTD COM G637AM102 6,749 295,100 SH   SOLE   295,100 0 0
NABRIVA THERAPEUTICS PLC SHS G63637105 2,227 640,000 SH   SOLE   640,000 0 0
NEUROCRINE BIOSCIENCES INC COM 64125C109 61,930 630,400 SH   SOLE   630,400 0 0
NEUROCRINE BIOSCIENCES INC NOTE 2.250% 5/1 64125CAD1 1,446 1,000,000 PRN   SOLE   1,000,000 0 0
NOVAVAX INC COM 670002104 4,355 3,250,000 SH   SOLE   3,250,000 0 0
NUVASIVE INC COM 670704105 19,415 372,500 SH   SOLE   372,500 0 0
OBSEVA SA COM H5861P103 16,957 1,120,000 SH   SOLE   1,120,000 0 0
ODONATE THERAPEUTICS INC COM 676079106 8,782 397,750 SH   SOLE   397,750 0 0
PACIRA PHARMACEUTICALS INC COM 695127100 38,396 1,198,000 SH   SOLE   1,198,000 0 0
PACIRA PHARMACEUTICALS INC NOTE 2.375% 4/0 695127AD2 932 1,000,000 PRN   SOLE   1,000,000 0 0
PARATEK PHARMACEUTICALS INC COM 699374302 4,590 450,000 SH   SOLE   450,000 0 0
PENUMBRA INC COM 70975L107 32,707 236,750 SH   SOLE   236,750 0 0
PORTOLA PHARMACEUTICALS INC COM 737010108 12,230 323,800 SH   SOLE   323,800 0 0
PRA HEALTH SCIENCES INC COM 69354M108 26,911 288,247 SH   SOLE   288,247 0 0
PROTEOSTASIS THERAPEUTICS IN COM 74373B109 1,315 471,321 SH   SOLE   471,321 0 0
PROTHENA CORP PLC SHS G72800108 1,239 85,000 SH Call SOLE   85,000 0 0
PUMA BIOTECHNOLOGY INC COM 74587V107 28,144 475,800 SH   SOLE   475,800 0 0
RA PHARMACEUTICALS INC COM 74933V108 7,463 750,000 SH   SOLE   750,000 0 0
RADIUS HEALTH INC COM NEW 750469207 33,154 1,125,000 SH   SOLE   1,125,000 0 0
RADIUS HEALTH INC NOTE 3.000% 9/0 750469AA6 1,399 1,500,000 PRN   SOLE   1,500,000 0 0
RESTORBIO INC COM 76133L103 2,516 275,000 SH   SOLE   275,000 0 0
RETROPHIN INC COM 761299106 10,904 400,000 SH   SOLE   400,000 0 0
RHYTHM PHARMACEUTICALS INC COM 76243J105 6,721 215,000 SH   SOLE   215,000 0 0
RIGEL PHARMACEUTICALS INC COM NEW 766559603 11,179 3,950,000 SH   SOLE   3,950,000 0 0
RTI SURGICAL INC COM 74975N105 8,970 1,950,000 SH   SOLE   1,950,000 0 0
SAGE THERAPEUTICS INC COM 78667J108 7,670 49,000 SH   SOLE   49,000 0 0
SAREPTA THERAPEUTICS INC COM 803607100 39,324 297,500 SH   SOLE   297,500 0 0
SCYNEXIS INC COM 811292101 1,345 820,000 SH   SOLE   820,000 0 0
SERES THERAPEUTICS INC COM 81750R102 1,892 220,000 SH   SOLE   220,000 0 0
SOLID BIOSCIENCES INC COM 83422E105 3,385 95,000 SH   SOLE   95,000 0 0
SPARK THERAPEUTICS INC COM 84652J103 45,021 544,000 SH   SOLE   544,000 0 0
SPERO THERAPEUTICS INC COM 84833T103 7,702 525,000 SH   SOLE   525,000 0 0
STRYKER CORP COM 863667101 30,057 178,000 SH   SOLE   178,000 0 0
TELEFLEX INC COM 879369106 24,809 92,500 SH   SOLE   92,500 0 0
TESARO INC COM 881569107 27,812 625,400 SH   SOLE   625,400 0 0
THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 1,491 1,500,000 PRN   SOLE   1,500,000 0 0
THERAVANCE BIOPHARMA INC COM G8807B106 14,801 652,600 SH   SOLE   652,600 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 19,885 96,000 SH   SOLE   96,000 0 0
TRANSLATE BIO INC COM 89374L104 12,790 1,011,079 SH   SOLE   1,011,079 0 0
ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 15,374 200,000 SH   SOLE   200,000 0 0
UNITEDHEALTH GROUP INC COM 91324P102 139,230 567,500 SH   SOLE   567,500 0 0
VERTEX PHARMACEUTICALS INC COM 92532F100 32,377 190,500 SH   SOLE   190,500 0 0
WELLCARE HEALTH PLANS INC COM 94946T106 54,912 223,000 SH   SOLE   223,000 0 0
WEST PHARMACEUTICAL SVSC INC COM 955306105 15,886 160,000 SH   SOLE   160,000 0 0
WRIGHT MED GROUP N V ORD SHS 0.03 PAR N96617118 25,960 1,000,000 SH   SOLE   1,000,000 0 0
ZAI LAB LTD ADR 98887Q104 6,975 300,000 SH   SOLE   300,000 0 0
ZIMMER BIOMET HLDGS INC COM 98956P102 17,942 161,000 SH   SOLE   161,000 0 0
ZOGENIX INC COM NEW 98978L204 9,989 226,000 SH   SOLE   226,000 0 0