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
ABLYNX NV SPONSORED ADR 00372Y105 6,248 250,000 SH   SOLE   250,000 0 0
ACADIA HEALTHCARE COMPANY IN COM 00404A109 40,902 1,253,500 SH   SOLE   1,253,500 0 0
ACHILLION PHARMACEUTICALS IN COM 00448Q201 6,480 2,250,000 SH   SOLE   2,250,000 0 0
ACLARIS THERAPEUTICS INC COM 00461U105 10,234 415,000 SH   SOLE   415,000 0 0
ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 5,845 875,000 SH   SOLE   875,000 0 0
ADURO BIOTECH INC COM 00739L101 3,113 415,000 SH   SOLE   415,000 0 0
ADVANCED ACCELERATOR APPLIC SPONSORED ADS 00790T100 67,377 825,500 SH   SOLE   825,500 0 0
AEGLEA BIOTHERAPEUTICS INC COM 00773J103 2,835 524,089 SH   SOLE   524,089 0 0
AETNA INC NEW COM 00817Y108 43,113 239,000 SH   SOLE   239,000 0 0
AIMMUNE THERAPEUTICS INC COM 00900T107 11,081 293,000 SH   SOLE   293,000 0 0
ALDER BIOPHARMACEUTICALS INC COM 014339105 12,080 1,055,000 SH   SOLE   1,055,000 0 0
ALEXION PHARMACEUTICALS INC COM 015351109 57,403 480,000 SH   SOLE   480,000 0 0
ALIGN TECHNOLOGY INC COM 016255101 14,831 66,750 SH   SOLE   66,750 0 0
ALLERGAN PLC 5.5% CNV PFD A G0177J116 2,934 5,000 SH   SOLE   5,000 0 0
ALMOST FAMILY INC COM 020409108 8,166 147,540 SH   SOLE   147,540 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 16,517 130,000 SH   SOLE   130,000 0 0
ALPINE IMMUNE SCIENCES INC COM 02083G100 1,680 150,000 SH   SOLE   150,000 0 0
AMARIN CORP PLC SPONS ADR NEW 023111206 15,840 3,950,000 SH   SOLE   3,950,000 0 0
AMICUS THERAPEUTICS INC COM 03152W109 13,095 910,000 SH   SOLE   910,000 0 0
ANAPTYSBIO INC COM 032724106 14,343 142,400 SH   SOLE   142,400 0 0
ARDELYX INC COM 039697107 15,019 2,275,557 SH   SOLE   2,275,557 0 0
ARENA PHARMACEUTICALS INC COM NEW 040047607 7,304 215,000 SH   SOLE   215,000 0 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 11,217 280,000 SH   SOLE   280,000 0 0
ASSEMBLY BIOSCIENCES INC COM 045396108 20,363 450,000 SH   SOLE   450,000 0 0
ATYR PHARMA INC COM 002120103 1,663 475,000 SH   SOLE   475,000 0 0
AUDENTES THERAPEUTICS INC COM 05070R104 16,406 525,000 SH   SOLE   525,000 0 0
AVEXIS INC COM 05366U100 19,367 175,000 SH   SOLE   175,000 0 0
AXOGEN INC COM 05463X106 13,513 477,500 SH   SOLE   477,500 0 0
BAXTER INTL INC COM 071813109 14,867 230,000 SH   SOLE   230,000 0 0
BEIGENE LTD SPONSORED ADR 07725L102 25,994 266,000 SH   SOLE   266,000 0 0
BIOCRYST PHARMACEUTICALS COM 09058V103 3,989 812,500 SH   SOLE   812,500 0 0
BIOGEN INC COM 09062X103 16,884 53,000 SH   SOLE   53,000 0 0
BIOHAVEN PHARMACTL HLDG CO L COM G11196105 6,583 244,000 SH   SOLE   244,000 0 0
BIOMARIN PHARMACEUTICAL INC COM 09061G101 11,146 125,000 SH   SOLE   125,000 0 0
BLUEBIRD BIO INC COM 09609G100 8,015 45,000 SH   SOLE   45,000 0 0
BLUEPRINT MEDICINES CORP COM 09627Y109 11,048 146,500 SH   SOLE   146,500 0 0
BRISTOL MYERS SQUIBB CO COM 110122108 3,064 50,000 SH   SOLE   50,000 0 0
CARDIOME PHARMA CORP COM NO PAR 14159U301 1,860 1,200,000 SH   SOLE   1,200,000 0 0
CELGENE CORP COM 151020104 31,621 303,000 SH   SOLE   303,000 0 0
CHIASMA INC COM 16706W102 893 525,000 SH   SOLE   525,000 0 0
CHINA CORD BLOOD CORP SHS G21107100 8,756 880,000 SH   SOLE   880,000 0 0
CIDARA THERAPEUTICS INC COM 171757107 2,040 300,000 SH   SOLE   300,000 0 0
CIGNA CORPORATION COM 125509109 65,192 321,000 SH   SOLE   321,000 0 0
CLEARSIDE BIOMEDICAL INC COM 185063104 6,545 935,000 SH   SOLE   935,000 0 0
CLEMENTIA PHARMACEUTICALS IN COM 185575107 6,548 345,000 SH   SOLE   345,000 0 0
CLOVIS ONCOLOGY INC COM 189464100 15,742 231,500 SH   SOLE   231,500 0 0
COHERUS BIOSCIENCES INC COM 19249H103 5,540 629,500 SH   SOLE   629,500 0 0
COLLEGIUM PHARMACEUTICAL INC COM 19459J104 34,811 1,885,729 SH   SOLE   1,885,729 0 0
COMPUGEN LTD ORD M25722105 2,063 825,000 SH   SOLE   825,000 0 0
CORVUS PHARMACEUTICALS INC COM 221015100 4,378 422,600 SH   SOLE   422,600 0 0
CYMABAY THERAPEUTICS INC COM 23257D103 4,140 450,000 SH   SOLE   450,000 0 0
DARE BIOSCIENCE INC COM 23666P101 135 62,500 SH   SOLE   62,500 0 0
DAVITA INC COM 23918K108 5,787 80,100 SH   SOLE   80,100 0 0
DBV TECHNOLOGIES S A SPONSORED ADR 23306J101 1,796 73,000 SH   SOLE   73,000 0 0
DERMIRA INC COM 24983L104 11,680 420,000 SH   SOLE   420,000 0 0
DYNAVAX TECHNOLOGIES CORP COM NEW 268158201 3,273 175,000 SH   SOLE   175,000 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 21,415 190,001 SH   SOLE   190,001 0 0
EGALET CORP NOTE 5.500% 4/0 28226BAB0 3,754 7,800,000 PRN   SOLE   7,800,000 0 0
EPIZYME INC COM 29428V104 16,629 1,325,000 SH   SOLE   1,325,000 0 0
EXACT SCIENCES CORP COM 30063P105 22,850 434,900 SH   SOLE   434,900 0 0
EXELIXIS INC COM 30161Q104 5,320 175,000 SH   SOLE   175,000 0 0
FIBROGEN INC COM 31572Q808 15,405 325,000 SH   SOLE   325,000 0 0
FIVE PRIME THERAPEUTICS INC COM 33830X104 9,316 425,000 SH   SOLE   425,000 0 0
G1 THERAPEUTICS INC COM 3621LQ109 4,256 214,500 SH   SOLE   214,500 0 0
GALAPAGOS NV SPON ADR 36315X101 17,346 185,000 SH   SOLE   185,000 0 0
GILEAD SCIENCES INC COM 375558103 22,452 313,400 SH   SOLE   313,400 0 0
GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 5,903 150,000 SH   SOLE   150,000 0 0
GW PHARMACEUTICALS PLC ADS 36197T103 46,732 354,000 SH   SOLE   354,000 0 0
HEALTHEQUITY INC COM 42226A107 9,099 195,000 SH   SOLE   195,000 0 0
HEALTHSOUTH CORP COM NEW 421924309 13,094 265,000 SH   SOLE   265,000 0 0
HERON THERAPEUTICS INC COM 427746102 4,525 250,000 SH   SOLE   250,000 0 0
HOLOGIC INC COM 436440101 14,321 335,000 SH   SOLE   335,000 0 0
INCYTE CORP COM 45337C102 17,285 182,500 SH   SOLE   182,500 0 0
INFINITY PHARMACEUTICALS INC COM 45665G303 548 270,000 SH   SOLE   270,000 0 0
INOGEN INC COM 45780L104 9,526 80,000 SH   SOLE   80,000 0 0
INSMED INC COM PAR $.01 457669307 19,129 613,500 SH   SOLE   613,500 0 0
INTERSECT ENT INC COM 46071F103 11,178 345,000 SH   SOLE   345,000 0 0
INTRA CELLULAR THERAPIES INC COM 46116X101 2,715 187,500 SH   SOLE   187,500 0 0
INTUITIVE SURGICAL INC COM NEW 46120E602 52,515 143,900 SH   SOLE   143,900 0 0
INVITAE CORP COM 46185L103 11,858 1,306,000 SH   SOLE   1,306,000 0 0
IRHYTHM TECHNOLOGIES INC COM 450056106 22,756 406,000 SH   SOLE   406,000 0 0
IRONWOOD PHARMACEUTICALS INC COM CL A 46333X108 3,373 225,000 SH   SOLE   225,000 0 0
JAZZ PHARMACEUTICALS PLC SHS USD G50871105 16,656 123,700 SH   SOLE   123,700 0 0
JOHNSON & JOHNSON COM 478160104 27,944 200,000 SH   SOLE   200,000 0 0
JUNO THERAPEUTICS INC COM 48205A109 10,513 230,000 SH   SOLE   230,000 0 0
LOXO ONCOLOGY INC COM 548862101 26,096 310,000 SH   SOLE   310,000 0 0
MACROGENICS INC COM 556099109 4,275 225,000 SH   SOLE   225,000 0 0
MADRIGAL PHARMACEUTICALS INC COM 558868105 31,392 342,000 SH   SOLE   342,000 0 0
MEDICINES CO COM 584688105 18,865 690,000 SH   SOLE   690,000 0 0
MEDICINES CO NOTE 2.500% 1/1 584688AE5 3,171 3,000,000 PRN   SOLE   3,000,000 0 0
MEDICINES CO NOTE 2.750% 7/1 584688AG0 4,597 5,000,000 PRN   SOLE   5,000,000 0 0
MERCK & CO INC COM 58933Y105 47,869 850,700 SH   SOLE   850,700 0 0
MERSANA THERAPEUTICS INC COM 59045L106 21,799 1,326,800 SH   SOLE   1,326,800 0 0
MERUS N V COM N5749R100 5,276 271,952 SH   SOLE   271,952 0 0
MIRATI THERAPEUTICS INC COM 60468T105 3,285 180,000 SH   SOLE   180,000 0 0
MOLINA HEALTHCARE INC COM 60855R100 43,478 567,000 SH   SOLE   567,000 0 0
MYOVANT SCIENCES LTD COM G637AM102 3,730 295,100 SH   SOLE   295,100 0 0
NABRIVA THERAPEUTICS PLC SHS G63637105 3,738 625,000 SH   SOLE   625,000 0 0
NEUROCRINE BIOSCIENCES INC COM 64125C109 37,709 486,000 SH   SOLE   486,000 0 0
NOVAVAX INC COM 670002104 2,480 2,000,000 SH   SOLE   2,000,000 0 0
OBSEVA SA COM H5861P103 8,198 840,000 SH   SOLE   840,000 0 0
ODONATE THERAPEUTICS INC COM 676079106 10,250 410,000 SH   SOLE   410,000 0 0
OREXIGEN THERAPEUTICS INC COM NEW 686164302 213 165,300 SH   SOLE   165,300 0 0
PACIRA PHARMACEUTICALS INC COM 695127100 50,521 1,106,700 SH   SOLE   1,106,700 0 0
PARATEK PHARMACEUTICALS INC COM 699374302 8,055 450,000 SH   SOLE   450,000 0 0
PENUMBRA INC COM 70975L107 29,218 310,500 SH   SOLE   310,500 0 0
PORTOLA PHARMACEUTICALS INC COM 737010108 15,763 323,800 SH   SOLE   323,800 0 0
PRA HEALTH SCIENCES INC COM 69354M108 43,486 477,500 SH   SOLE   477,500 0 0
PROTEOSTASIS THERAPEUTICS IN COM 74373B109 3,935 675,000 SH   SOLE   675,000 0 0
PROTHENA CORP PLC SHS G72800108 11,622 310,000 SH   SOLE   310,000 0 0
PROTHENA CORP PLC SHS G72800108 937 25,000 SH Call SOLE   25,000 0 0
PUMA BIOTECHNOLOGY INC COM 74587V107 36,920 373,500 SH   SOLE   373,500 0 0
RA PHARMACEUTICALS INC COM 74933V108 5,100 600,000 SH   SOLE   600,000 0 0
RADIUS HEALTH INC COM NEW 750469207 29,959 943,000 SH   SOLE   943,000 0 0
RADIUS HEALTH INC NOTE 3.000% 9/0 750469AA6 1,418 1,500,000 PRN   SOLE   1,500,000 0 0
RETROPHIN INC COM 761299106 8,428 400,000 SH   SOLE   400,000 0 0
RHYTHM PHARMACEUTICALS INC COM 76243J105 2,078 71,500 SH   SOLE   71,500 0 0
RIGEL PHARMACEUTICALS INC COM NEW 766559603 9,603 2,475,000 SH   SOLE   2,475,000 0 0
RTI SURGICAL INC COM 74975N105 7,995 1,950,000 SH   SOLE   1,950,000 0 0
SAGE THERAPEUTICS INC COM 78667J108 7,412 45,000 SH   SOLE   45,000 0 0
SAREPTA THERAPEUTICS INC COM 803607100 14,355 258,000 SH   SOLE   258,000 0 0
SCYNEXIS INC COM 811292101 1,763 760,000 SH   SOLE   760,000 0 0
SEATTLE GENETICS INC COM 812578102 6,688 125,000 SH   SOLE   125,000 0 0
SERES THERAPEUTICS INC COM 81750R102 2,231 220,000 SH   SOLE   220,000 0 0
SPARK THERAPEUTICS INC COM 84652J103 31,623 615,000 SH   SOLE   615,000 0 0
SPERO THERAPEUTICS INC COM 84833T103 6,169 525,000 SH   SOLE   525,000 0 0
STERIS PLC SHS USD G84720104 6,473 74,000 SH   SOLE   74,000 0 0
STRYKER CORP COM 863667101 19,587 126,500 SH   SOLE   126,500 0 0
TELEFLEX INC COM 879369106 22,829 91,750 SH   SOLE   91,750 0 0
TESARO INC COM 881569107 45,454 548,500 SH   SOLE   548,500 0 0
TETRAPHASE PHARMACEUTICALS I COM 88165N105 5,985 950,000 SH   SOLE   950,000 0 0
THERAPEUTICSMD INC COM 88338N107 7,097 1,175,000 SH   SOLE   1,175,000 0 0
THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 1,645 1,500,000 PRN   SOLE   1,500,000 0 0
THERAVANCE BIOPHARMA INC COM G8807B106 18,201 652,600 SH   SOLE   652,600 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 20,887 110,000 SH   SOLE   110,000 0 0
ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 7,560 163,000 SH   SOLE   163,000 0 0
UNITEDHEALTH GROUP INC COM 91324P102 107,364 487,000 SH   SOLE   487,000 0 0
VERTEX PHARMACEUTICALS INC COM 92532F100 25,664 171,250 SH   SOLE   171,250 0 0
WELLCARE HEALTH PLANS INC COM 94946T106 26,949 134,000 SH   SOLE   134,000 0 0
WILLIS TOWERS WATSON PUB LTD SHS G96629103 18,535 123,000 SH   SOLE   123,000 0 0
WRIGHT MED GROUP INC NOTE 2.000% 2/1 98235TAE7 1,031 1,000,000 PRN   SOLE   1,000,000 0 0
WRIGHT MED GROUP N V ORD SHS 0.03 PAR N96617118 15,540 700,000 SH   SOLE   700,000 0 0
ZAI LAB LTD ADR 98887Q104 6,263 295,000 SH   SOLE   295,000 0 0
ZIMMER BIOMET HLDGS INC COM 98956P102 14,360 119,000 SH   SOLE   119,000 0 0
ZOGENIX INC COM NEW 98978L204 9,031 225,500 SH   SOLE   225,500 0 0