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 56,790 600,000 SH   SOLE   600,000 0 0
ACADIA HEALTHCARE COMPANY IN COM 00404A109 49,112 1,253,500 SH   SOLE   1,253,500 0 0
ACHILLION PHARMACEUTICALS IN COM 00448Q201 8,348 2,250,000 SH   SOLE   2,250,000 0 0
ACLARIS THERAPEUTICS INC COM 00461U105 9,286 530,000 SH   SOLE   530,000 0 0
ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 9,826 875,000 SH   SOLE   875,000 0 0
ADVERUM BIOTECHNOLOGIES INC COM 00773U108 5,220 900,000 SH   SOLE   900,000 0 0
AEGLEA BIOTHERAPEUTICS INC COM 00773J103 5,199 524,089 SH   SOLE   524,089 0 0
AETNA INC NEW COM 00817Y108 40,391 239,000 SH   SOLE   239,000 0 0
AGILENT TECHNOLOGIES INC COM 00846U101 6,121 91,500 SH   SOLE   91,500 0 0
AIMMUNE THERAPEUTICS INC COM 00900T107 5,093 160,000 SH   SOLE   160,000 0 0
ALDER BIOPHARMACEUTICALS INC COM 014339105 19,428 1,529,800 SH   SOLE   1,529,800 0 0
ALDER BIOPHARMACEUTICALS INC NOTE 2.500% 2/0 014339AA3 4,626 5,000,000 PRN   SOLE   5,000,000 0 0
ALEXION PHARMACEUTICALS INC COM 015351109 54,058 485,000 SH   SOLE   485,000 0 0
ALIGN TECHNOLOGY INC COM 016255101 16,449 65,500 SH   SOLE   65,500 0 0
ALLERGAN PLC SHS G0177J108 2,973 17,665 SH   SOLE   17,665 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 17,031 143,000 SH   SOLE   143,000 0 0
AMARIN CORP PLC SPONS ADR NEW 023111206 12,040 4,000,000 SH   SOLE   4,000,000 0 0
AMERISOURCEBERGEN CORP COM 03073E105 25,432 295,000 SH   SOLE   295,000 0 0
AMICUS THERAPEUTICS INC COM 03152W109 15,040 1,000,000 SH   SOLE   1,000,000 0 0
ANAPTYSBIO INC COM 032724106 14,051 135,000 SH   SOLE   135,000 0 0
ARDELYX INC COM 039697107 11,492 2,275,557 SH   SOLE   2,275,557 0 0
ARENA PHARMACEUTICALS INC COM NEW 040047607 14,813 375,000 SH   SOLE   375,000 0 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 18,541 283,500 SH   SOLE   283,500 0 0
ASSEMBLY BIOSCIENCES INC COM 045396108 21,769 443,000 SH   SOLE   443,000 0 0
AUDENTES THERAPEUTICS INC COM 05070R104 16,978 565,000 SH   SOLE   565,000 0 0
AVEXIS INC COM 05366U100 23,480 190,000 SH   SOLE   190,000 0 0
AXOGEN INC COM 05463X106 18,433 505,000 SH   SOLE   505,000 0 0
BAXTER INTL INC COM 071813109 19,317 297,000 SH   SOLE   297,000 0 0
BEIGENE LTD SPONSORED ADR 07725L102 37,170 221,250 SH   SOLE   221,250 0 0
BIOCRYST PHARMACEUTICALS COM 09058V103 4,412 925,000 SH   SOLE   925,000 0 0
BIOGEN INC COM 09062X103 14,512 53,000 SH   SOLE   53,000 0 0
BIOHAVEN PHARMACTL HLDG CO L COM G11196105 8,372 325,000 SH   SOLE   325,000 0 0
BIOMARIN PHARMACEUTICAL INC COM 09061G101 10,134 125,000 SH   SOLE   125,000 0 0
BLUEBIRD BIO INC COM 09609G100 7,684 45,000 SH   SOLE   45,000 0 0
BLUEPRINT MEDICINES CORP COM 09627Y109 14,466 157,753 SH   SOLE   157,753 0 0
BRISTOL MYERS SQUIBB CO COM 110122108 41,113 650,000 SH   SOLE   650,000 0 0
CARDIOME PHARMA CORP COM NO PAR 14159U301 2,784 1,200,000 SH   SOLE   1,200,000 0 0
CELGENE CORP COM 151020104 27,664 310,100 SH   SOLE   310,100 0 0
CHIASMA INC COM 16706W102 788 525,000 SH   SOLE   525,000 0 0
CIDARA THERAPEUTICS INC COM 171757107 1,200 300,000 SH   SOLE   300,000 0 0
CLEARSIDE BIOMEDICAL INC COM 185063104 10,462 975,000 SH   SOLE   975,000 0 0
CLEMENTIA PHARMACEUTICALS IN COM 185575107 5,227 345,000 SH   SOLE   345,000 0 0
CLOVIS ONCOLOGY INC COM 189464100 12,223 231,500 SH   SOLE   231,500 0 0
COHERUS BIOSCIENCES INC COM 19249H103 7,680 695,000 SH   SOLE   695,000 0 0
COLLEGIUM PHARMACEUTICAL INC COM 19459J104 49,056 1,920,000 SH   SOLE   1,920,000 0 0
COMPUGEN LTD ORD M25722105 3,671 825,000 SH   SOLE   825,000 0 0
CORVUS PHARMACEUTICALS INC COM 221015100 6,630 575,000 SH   SOLE   575,000 0 0
CYMABAY THERAPEUTICS INC COM 23257D103 6,365 490,000 SH   SOLE   490,000 0 0
DAVITA INC COM 23918K108 26,871 407,500 SH   SOLE   407,500 0 0
DBV TECHNOLOGIES S A SPONSORED ADR 23306J101 1,684 73,000 SH   SOLE   73,000 0 0
DERMIRA INC COM 24983L104 4,794 600,000 SH   SOLE   600,000 0 0
DYNAVAX TECHNOLOGIES CORP COM NEW 268158201 4,982 251,000 SH   SOLE   251,000 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 26,509 190,001 SH   SOLE   190,001 0 0
EGALET CORP NOTE 5.500% 4/0 28226BAB0 3,159 7,800,000 PRN   SOLE   7,800,000 0 0
ENCOMPASS HEALTH CORP COM 29261A100 18,695 327,000 SH   SOLE   327,000 0 0
ENDOCYTE INC COM 29269A102 6,136 675,000 SH   SOLE   675,000 0 0
EPIZYME INC COM 29428V104 22,631 1,275,000 SH   SOLE   1,275,000 0 0
EXACT SCIENCES CORP COM 30063P105 14,942 370,500 SH   SOLE   370,500 0 0
EXELIXIS INC COM 30161Q104 3,876 175,000 SH   SOLE   175,000 0 0
FIBROGEN INC COM 31572Q808 14,299 309,500 SH   SOLE   309,500 0 0
FIVE PRIME THERAPEUTICS INC COM 33830X104 10,059 585,500 SH   SOLE   585,500 0 0
G1 THERAPEUTICS INC COM 3621LQ109 10,633 287,000 SH   SOLE   287,000 0 0
GALAPAGOS NV SPON ADR 36315X101 18,456 185,000 SH   SOLE   185,000 0 0
GILEAD SCIENCES INC COM 375558103 23,627 313,400 SH   SOLE   313,400 0 0
GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 7,245 150,000 SH   SOLE   150,000 0 0
GLOBAL CORD BLOOD CORPORATIO SHS G39342103 8,976 880,000 SH   SOLE   880,000 0 0
GTX INC DEL COM NEW 40052B207 6,284 354,000 SH   SOLE   354,000 0 0
GW PHARMACEUTICALS PLC ADS 36197T103 40,561 360,000 SH   SOLE   360,000 0 0
HCA HEALTHCARE INC COM 40412C101 36,860 380,000 SH   SOLE   380,000 0 0
HERON THERAPEUTICS INC COM 427746102 13,138 476,000 SH   SOLE   476,000 0 0
HOLOGIC INC COM 436440101 14,944 400,000 SH   SOLE   400,000 0 0
HOMOLOGY MEDICINES INC COM 438083107 10,753 575,000 SH   SOLE   575,000 0 0
IDEXX LABS INC COM 45168D104 12,058 63,000 SH   SOLE   63,000 0 0
IMMUNOMEDICS INC COM 452907108 6,575 450,000 SH   SOLE   450,000 0 0
INCYTE CORP COM 45337C102 15,208 182,500 SH   SOLE   182,500 0 0
INFINITY PHARMACEUTICALS INC COM 45665G303 567 270,000 SH   SOLE   270,000 0 0
INOGEN INC COM 45780L104 13,574 110,500 SH   SOLE   110,500 0 0
INSMED INC COM PAR $.01 457669307 18,579 825,000 SH   SOLE   825,000 0 0
INSMED INC NOTE 1.750% 1/1 457669AA7 5,358 6,000,000 PRN   SOLE   6,000,000 0 0
INTERSECT ENT INC COM 46071F103 16,113 410,000 SH   SOLE   410,000 0 0
INTRA CELLULAR THERAPIES INC COM 46116X101 3,947 187,500 SH   SOLE   187,500 0 0
INTUITIVE SURGICAL INC COM NEW 46120E602 59,406 143,900 SH   SOLE   143,900 0 0
INVITAE CORP COM 46185L103 6,566 1,400,000 SH   SOLE   1,400,000 0 0
IRHYTHM TECHNOLOGIES INC COM 450056106 30,059 477,500 SH   SOLE   477,500 0 0
JAZZ PHARMACEUTICALS PLC SHS USD G50871105 18,677 123,700 SH   SOLE   123,700 0 0
KURA ONCOLOGY INC COM 50127T109 497 26,500 SH   SOLE   26,500 0 0
LA JOLLA PHARMACEUTICAL CO COM PAR $.0001 2 503459604 6,552 220,000 SH   SOLE   220,000 0 0
LOXO ONCOLOGY INC COM 548862101 36,515 316,500 SH   SOLE   316,500 0 0
MACROGENICS INC COM 556099109 6,919 275,000 SH   SOLE   275,000 0 0
MADRIGAL PHARMACEUTICALS INC COM 558868105 38,015 325,500 SH   SOLE   325,500 0 0
MEDICINES CO COM 584688105 22,729 690,000 SH   SOLE   690,000 0 0
MEDICINES CO NOTE 2.500% 1/1 584688AE5 3,462 3,000,000 PRN   SOLE   3,000,000 0 0
MEDICINES CO NOTE 2.750% 7/1 584688AG0 4,820 5,000,000 PRN   SOLE   5,000,000 0 0
MENLO THERAPEUTICS INC COM 586858102 12,401 330,000 SH   SOLE   330,000 0 0
MERSANA THERAPEUTICS INC COM 59045L106 20,501 1,300,000 SH   SOLE   1,300,000 0 0
MERUS N V COM N5749R100 3,241 174,917 SH   SOLE   174,917 0 0
MIRATI THERAPEUTICS INC COM 60468T105 5,802 189,000 SH   SOLE   189,000 0 0
MOLINA HEALTHCARE INC COM 60855R100 46,760 576,000 SH   SOLE   576,000 0 0
MOMENTA PHARMACEUTICALS INC COM 60877T100 6,262 345,000 SH   SOLE   345,000 0 0
MYOVANT SCIENCES LTD COM G637AM102 6,277 295,100 SH   SOLE   295,100 0 0
NABRIVA THERAPEUTICS PLC SHS G63637105 3,144 625,000 SH   SOLE   625,000 0 0
NEUROCRINE BIOSCIENCES INC COM 64125C109 50,272 606,200 SH   SOLE   606,200 0 0
NOVAVAX INC COM 670002104 5,775 2,750,000 SH   SOLE   2,750,000 0 0
NUVASIVE INC COM 670704105 15,924 305,000 SH   SOLE   305,000 0 0
OBSEVA SA COM H5861P103 11,332 840,000 SH   SOLE   840,000 0 0
ODONATE THERAPEUTICS INC COM 676079106 8,123 383,500 SH   SOLE   383,500 0 0
PACIRA PHARMACEUTICALS INC COM 695127100 35,044 1,125,000 SH   SOLE   1,125,000 0 0
PACIRA PHARMACEUTICALS INC NOTE 2.375% 4/0 695127AD2 912 1,000,000 PRN   SOLE   1,000,000 0 0
PARATEK PHARMACEUTICALS INC COM 699374302 5,850 450,000 SH   SOLE   450,000 0 0
PENUMBRA INC COM 70975L107 28,103 243,000 SH   SOLE   243,000 0 0
PORTOLA PHARMACEUTICALS INC COM 737010108 10,575 323,800 SH   SOLE   323,800 0 0
PRA HEALTH SCIENCES INC COM 69354M108 32,769 395,000 SH   SOLE   395,000 0 0
PROTEOSTASIS THERAPEUTICS IN COM 74373B109 3,206 675,000 SH   SOLE   675,000 0 0
PROTHENA CORP PLC SHS G72800108 11,692 318,500 SH   SOLE   318,500 0 0
PROTHENA CORP PLC SHS G72800108 4,956 135,000 SH Call SOLE   135,000 0 0
PUMA BIOTECHNOLOGY INC COM 74587V107 28,098 412,900 SH   SOLE   412,900 0 0
RA PHARMACEUTICALS INC COM 74933V108 3,186 600,000 SH   SOLE   600,000 0 0
RADIUS HEALTH INC COM NEW 750469207 35,940 1,000,000 SH   SOLE   1,000,000 0 0
RADIUS HEALTH INC NOTE 3.000% 9/0 750469AA6 1,512 1,500,000 PRN   SOLE   1,500,000 0 0
RESTORBIO INC COM 76133L103 2,635 275,000 SH   SOLE   275,000 0 0
RETROPHIN INC COM 761299106 8,944 400,000 SH   SOLE   400,000 0 0
RHYTHM PHARMACEUTICALS INC COM 76243J105 1,423 71,500 SH   SOLE   71,500 0 0
RIGEL PHARMACEUTICALS INC COM NEW 766559603 9,116 2,575,000 SH   SOLE   2,575,000 0 0
RTI SURGICAL INC COM 74975N105 8,970 1,950,000 SH   SOLE   1,950,000 0 0
SAGE THERAPEUTICS INC COM 78667J108 7,892 49,000 SH   SOLE   49,000 0 0
SAREPTA THERAPEUTICS INC COM 803607100 19,115 258,000 SH   SOLE   258,000 0 0
SCYNEXIS INC COM 811292101 1,099 820,000 SH   SOLE   820,000 0 0
SERES THERAPEUTICS INC COM 81750R102 1,615 220,000 SH   SOLE   220,000 0 0
SHIRE PLC SPONSORED ADR 82481R106 5,602 37,500 SH   SOLE   37,500 0 0
SOLID BIOSCIENCES INC COM 83422E105 938 125,000 SH   SOLE   125,000 0 0
SPARK THERAPEUTICS INC COM 84652J103 41,519 623,500 SH   SOLE   623,500 0 0
SPERO THERAPEUTICS INC COM 84833T103 7,481 525,000 SH   SOLE   525,000 0 0
STRYKER CORP COM 863667101 28,644 178,000 SH   SOLE   178,000 0 0
TELEFLEX INC COM 879369106 23,586 92,500 SH   SOLE   92,500 0 0
TESARO INC COM 881569107 32,741 573,000 SH   SOLE   573,000 0 0
THERAPEUTICSMD INC COM 88338N107 5,712 1,172,800 SH   SOLE   1,172,800 0 0
THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 1,515 1,500,000 PRN   SOLE   1,500,000 0 0
THERAVANCE BIOPHARMA INC COM G8807B106 15,826 652,600 SH   SOLE   652,600 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 23,640 114,500 SH   SOLE   114,500 0 0
ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 8,821 173,000 SH   SOLE   173,000 0 0
UNITEDHEALTH GROUP INC COM 91324P102 104,325 487,500 SH   SOLE   487,500 0 0
VERTEX PHARMACEUTICALS INC COM 92532F100 29,499 181,000 SH   SOLE   181,000 0 0
WELLCARE HEALTH PLANS INC COM 94946T106 25,946 134,000 SH   SOLE   134,000 0 0
WRIGHT MED GROUP INC NOTE 2.000% 2/1 98235TAE7 1,001 1,000,000 PRN   SOLE   1,000,000 0 0
WRIGHT MED GROUP N V ORD SHS 0.03 PAR N96617118 19,840 1,000,000 SH   SOLE   1,000,000 0 0
ZAI LAB LTD ADR 98887Q104 6,298 295,000 SH   SOLE   295,000 0 0
ZIMMER BIOMET HLDGS INC COM 98956P102 16,083 147,500 SH   SOLE   147,500 0 0
ZOETIS INC CL A 98978V103 8,435 101,000 SH   SOLE   101,000 0 0
ZOGENIX INC COM NEW 98978L204 9,031 225,500 SH   SOLE   225,500 0 0