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 62,327 1,305,000 SH   SOLE   1,305,000 0 0
ACADIA PHARMACEUTICALS INC COM 004225108 6,856 182,000 SH   SOLE   182,000 0 0
ACHILLION PHARMACEUTICALS IN COM 00448Q201 9,570 2,131,400 SH   SOLE   2,131,400 0 0
ACLARIS THERAPEUTICS INC COM 00461U105 11,356 440,000 SH   SOLE   440,000 0 0
ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 7,166 875,000 SH   SOLE   875,000 0 0
ADURO BIOTECH INC COM 00739L101 4,420 415,000 SH   SOLE   415,000 0 0
ADVANCED ACCELERATOR APPLIC SPONSORED ADS 00790T100 53,048 784,500 SH   SOLE   784,500 0 0
AEGLEA BIOTHERAPEUTICS INC COM 00773J103 2,584 524,089 SH   SOLE   524,089 0 0
AETNA INC NEW COM 00817Y108 63,445 399,000 SH   SOLE   399,000 0 0
AIMMUNE THERAPEUTICS INC COM 00900T107 7,263 293,000 SH   SOLE   293,000 0 0
ALDER BIOPHARMACEUTICALS INC COM 014339105 10,719 875,000 SH   SOLE   875,000 0 0
ALEXION PHARMACEUTICALS INC COM 015351109 64,954 463,000 SH   SOLE   463,000 0 0
ALIGN TECHNOLOGY INC COM 016255101 11,418 61,300 SH   SOLE   61,300 0 0
ALLERGAN PLC PFD CONV SER A G0177J116 3,789 5,000 SH   SOLE   5,000 0 0
ALMOST FAMILY INC COM 020409108 19,439 362,000 SH   SOLE   362,000 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 12,336 105,000 SH   SOLE   105,000 0 0
ALPINE IMMUNE SCIENCES INC COM 02083G100 1,740 150,000 SH   SOLE   150,000 0 0
AMARIN CORP PLC SPONS ADR NEW 023111206 14,000 4,000,000 SH   SOLE   4,000,000 0 0
AMICUS THERAPEUTICS INC COM 03152W109 13,723 910,000 SH   SOLE   910,000 0 0
ANAPTYSBIO INC COM 032724106 5,243 150,000 SH   SOLE   150,000 0 0
ANTHERA PHARMACEUTICALS INC COM 03674U300 155 107,630 SH   SOLE   107,630 0 0
ARDELYX INC COM 039697107 11,200 2,000,000 SH   SOLE   2,000,000 0 0
ARENA PHARMACEUTICALS INC COM NEW 040047607 5,483 215,000 SH   SOLE   215,000 0 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 10,150 280,000 SH   SOLE   280,000 0 0
ASSEMBLY BIOSCIENCES INC COM 045396108 13,619 390,000 SH   SOLE   390,000 0 0
ATYR PHARMA INC COM 002120103 2,399 475,000 SH   SOLE   475,000 0 0
AUDENTES THERAPEUTICS INC COM 05070R104 14,705 525,000 SH   SOLE   525,000 0 0
AVEXIS INC COM 05366U100 16,928 175,000 SH   SOLE   175,000 0 0
AXOGEN INC COM 05463X106 7,740 400,000 SH   SOLE   400,000 0 0
BARD C R INC COM 067383109 18,429 57,500 SH   SOLE   57,500 0 0
BAXTER INTL INC COM 071813109 14,433 230,000 SH   SOLE   230,000 0 0
BEIGENE LTD SPONSORED ADR 07725L102 28,969 280,000 SH   SOLE   280,000 0 0
BIOCRYST PHARMACEUTICALS COM 09058V103 2,358 450,000 SH   SOLE   450,000 0 0
BIOGEN INC COM 09062X103 16,595 53,000 SH   SOLE   53,000 0 0
BIOHAVEN PHARMACTL HLDG CO L COM G11196105 9,121 244,000 SH   SOLE   244,000 0 0
BIOMARIN PHARMACEUTICAL INC COM 09061G101 11,634 125,000 SH   SOLE   125,000 0 0
BLUEBIRD BIO INC COM 09609G100 4,807 35,000 SH   SOLE   35,000 0 0
BLUEPRINT MEDICINES CORP COM 09627Y109 6,026 86,500 SH   SOLE   86,500 0 0
BRISTOL MYERS SQUIBB CO COM 110122108 3,187 50,000 SH   SOLE   50,000 0 0
CARDIOME PHARMA CORP COM NO PAR 14159U301 2,568 1,200,000 SH   SOLE   1,200,000 0 0
CELGENE CORP COM 151020104 38,278 262,500 SH   SOLE   262,500 0 0
CHIASMA INC COM 16706W102 1,256 492,500 SH   SOLE   492,500 0 0
CHINA CORD BLOOD CORP SHS G21107100 9,786 880,000 SH   SOLE   880,000 0 0
CIDARA THERAPEUTICS INC COM 171757107 2,430 300,000 SH   SOLE   300,000 0 0
CIGNA CORPORATION COM 125509109 50,474 270,000 SH   SOLE   270,000 0 0
CLEARSIDE BIOMEDICAL INC COM 185063104 8,172 935,000 SH   SOLE   935,000 0 0
CLEMENTIA PHARMACEUTICALS IN COM 185575107 5,827 345,000 SH   SOLE   345,000 0 0
CLOVIS ONCOLOGY INC COM 189464100 19,076 231,500 SH   SOLE   231,500 0 0
COHERUS BIOSCIENCES INC COM 19249H103 8,523 638,400 SH   SOLE   638,400 0 0
COLLEGIUM PHARMACEUTICAL INC COM 19459J104 18,934 1,805,000 SH   SOLE   1,805,000 0 0
COMPUGEN LTD ORD M25722105 3,135 825,000 SH   SOLE   825,000 0 0
CORVUS PHARMACEUTICALS INC COM 221015100 6,736 422,600 SH   SOLE   422,600 0 0
CYMABAY THERAPEUTICS INC COM 23257D103 3,627 450,000 SH   SOLE   450,000 0 0
DANAHER CORP DEL COM 235851102 19,301 225,000 SH   SOLE   225,000 0 0
DARE BIOSCIENCE INC COM 23666P101 195 62,500 SH   SOLE   62,500 0 0
DBV TECHNOLOGIES S A SPONSORED ADR 23306J101 3,098 73,000 SH   SOLE   73,000 0 0
DERMIRA INC COM 24983L104 10,800 400,000 SH   SOLE   400,000 0 0
DIMENSION THERAPEUTICS INC COM 25433V105 1,350 225,000 SH   SOLE   225,000 0 0
DYNAVAX TECHNOLOGIES CORP COM NEW 268158201 3,548 165,000 SH   SOLE   165,000 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 20,769 190,001 SH   SOLE   190,001 0 0
EGALET CORP COM 28226B104 384 300,000 SH   SOLE   300,000 0 0
EGALET CORP NOTE 5.500% 4/0 28226BAB0 4,051 7,800,000 PRN   SOLE   7,800,000 0 0
EPIZYME INC COM 29428V104 25,718 1,350,000 SH   SOLE   1,350,000 0 0
EXACT SCIENCES CORP COM 30063P105 20,610 437,400 SH   SOLE   437,400 0 0
EXELIXIS INC COM 30161Q104 4,240 175,000 SH   SOLE   175,000 0 0
FIBROGEN INC COM 31572Q808 17,485 325,000 SH   SOLE   325,000 0 0
FIVE PRIME THERAPEUTICS INC COM 33830X104 8,906 217,700 SH   SOLE   217,700 0 0
G1 THERAPEUTICS INC COM 3621LQ109 5,974 240,000 SH   SOLE   240,000 0 0
GALAPAGOS NV SPON ADR 36315X101 21,775 214,000 SH   SOLE   214,000 0 0
GILEAD SCIENCES INC COM 375558103 25,392 313,400 SH   SOLE   313,400 0 0
GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 4,658 150,000 SH   SOLE   150,000 0 0
GW PHARMACEUTICALS PLC ADS 36197T103 37,856 373,000 SH   SOLE   373,000 0 0
HEALTHEQUITY INC COM 42226A107 8,346 165,000 SH   SOLE   165,000 0 0
HEALTHSOUTH CORP COM NEW 421924309 12,283 265,000 SH   SOLE   265,000 0 0
INCYTE CORP COM 45337C102 20,196 173,000 SH   SOLE   173,000 0 0
INFINITY PHARMACEUTICALS INC COM 45665G303 359 270,000 SH   SOLE   270,000 0 0
INSMED INC COM PAR $.01 457669307 20,287 650,000 SH   SOLE   650,000 0 0
INTERSECT ENT INC COM 46071F103 10,747 345,000 SH   SOLE   345,000 0 0
INTRA CELLULAR THERAPIES INC COM 46116X101 2,959 187,500 SH   SOLE   187,500 0 0
INTUITIVE SURGICAL INC COM NEW 46120E602 50,202 48,000 SH   SOLE   48,000 0 0
INVITAE CORP COM 46185L103 12,237 1,306,000 SH   SOLE   1,306,000 0 0
IRHYTHM TECHNOLOGIES INC COM 450056106 20,026 386,000 SH   SOLE   386,000 0 0
IRONWOOD PHARMACEUTICALS INC COM CL A 46333X108 3,154 200,000 SH   SOLE   200,000 0 0
JAZZ PHARMACEUTICALS PLC SHS USD G50871105 18,091 123,700 SH   SOLE   123,700 0 0
JOHNSON & JOHNSON COM 478160104 22,752 175,000 SH   SOLE   175,000 0 0
JUNO THERAPEUTICS INC COM 48205A109 10,094 225,000 SH   SOLE   225,000 0 0
KALA PHARMACEUTICALS INC COM 483119103 571 25,000 SH   SOLE   25,000 0 0
KITE PHARMA INC COM 49803L109 12,227 68,000 SH   SOLE   68,000 0 0
LOXO ONCOLOGY INC COM 548862101 26,300 285,500 SH   SOLE   285,500 0 0
MACROGENICS INC COM 556099109 4,158 225,000 SH   SOLE   225,000 0 0
MADRIGAL PHARMACEUTICALS INC COM 558868105 12,370 275,000 SH   SOLE   275,000 0 0
MEDICINES CO COM 584688105 25,558 690,000 SH   SOLE   690,000 0 0
MEDICINES CO NOTE 2.500% 1/1 584688AE5 3,801 3,000,000 PRN   SOLE   3,000,000 0 0
MEDICINES CO NOTE 2.750% 7/1 584688AG0 5,281 5,000,000 PRN   SOLE   5,000,000 0 0
MEDTRONIC PLC SHS G5960L103 19,237 247,364 SH   SOLE   247,364 0 0
MERCK & CO INC COM 58933Y105 48,535 758,000 SH   SOLE   758,000 0 0
MERSANA THERAPEUTICS INC COM 59045L106 22,996 1,330,000 SH   SOLE   1,330,000 0 0
MERUS N V COM N5749R100 5,464 275,000 SH   SOLE   275,000 0 0
MOLINA HEALTHCARE INC COM 60855R100 29,051 422,500 SH   SOLE   422,500 0 0
MYOKARDIA INC COM 62857M105 1,714 40,000 SH   SOLE   40,000 0 0
MYOVANT SCIENCES LTD COM G637AM102 4,565 295,100 SH   SOLE   295,100 0 0
NABRIVA THERAPEUTICS PLC SHS G63637105 5,119 625,000 SH   SOLE   625,000 0 0
NEUROCRINE BIOSCIENCES INC COM 64125C109 26,963 440,000 SH   SOLE   440,000 0 0
NEURODERM LTD ORD SHS M74231107 9,247 237,700 SH   SOLE   237,700 0 0
NEWLINK GENETICS CORP COM 651511107 738 72,500 SH   SOLE   72,500 0 0
NOVAVAX INC COM 670002104 935 820,000 SH   SOLE   820,000 0 0
OBSEVA SA COM H5861P103 6,838 840,000 SH   SOLE   840,000 0 0
OREXIGEN THERAPEUTICS INC COM NEW 686164302 350 165,300 SH   SOLE   165,300 0 0
PACIRA PHARMACEUTICALS INC COM 695127100 40,854 1,088,000 SH   SOLE   1,088,000 0 0
PARATEK PHARMACEUTICALS INC COM 699374302 11,295 450,000 SH   SOLE   450,000 0 0
PENUMBRA INC COM 70975L107 28,038 310,500 SH   SOLE   310,500 0 0
PORTOLA PHARMACEUTICALS INC COM 737010108 17,495 323,800 SH   SOLE   323,800 0 0
PRA HEALTH SCIENCES INC COM 69354M108 36,371 477,500 SH   SOLE   477,500 0 0
PROTEOSTASIS THERAPEUTICS IN COM 74373B109 945 450,000 SH   SOLE   450,000 0 0
PROTHENA CORP PLC SHS G72800108 20,046 309,500 SH   SOLE   309,500 0 0
PUMA BIOTECHNOLOGY INC COM 74587V107 39,518 330,000 SH   SOLE   330,000 0 0
RA PHARMACEUTICALS INC COM 74933V108 8,760 600,000 SH   SOLE   600,000 0 0
RADIUS HEALTH INC COM NEW 750469207 36,353 943,000 SH   SOLE   943,000 0 0
RADIUS HEALTH INC NOTE 3.000% 9/0 750469AA6 1,509 1,500,000 PRN   SOLE   1,500,000 0 0
REGENERON PHARMACEUTICALS COM 75886F107 7,154 16,000 SH   SOLE   16,000 0 0
RETROPHIN INC COM 761299106 9,956 400,000 SH   SOLE   400,000 0 0
RIGEL PHARMACEUTICALS INC COM NEW 766559603 2,540 1,000,000 SH   SOLE   1,000,000 0 0
RTI SURGICAL INC COM 74975N105 8,873 1,950,000 SH   SOLE   1,950,000 0 0
SAGE THERAPEUTICS INC COM 78667J108 2,025 32,500 SH   SOLE   32,500 0 0
SAREPTA THERAPEUTICS INC COM 803607100 11,757 259,200 SH   SOLE   259,200 0 0
SCYNEXIS INC COM 811292101 1,832 760,000 SH   SOLE   760,000 0 0
SEATTLE GENETICS INC COM 812578102 6,801 125,000 SH   SOLE   125,000 0 0
SERES THERAPEUTICS INC COM 81750R102 3,529 220,000 SH   SOLE   220,000 0 0
SPARK THERAPEUTICS INC COM 84652J103 53,229 597,000 SH   SOLE   597,000 0 0
STERIS PLC SHS USD G84720104 6,542 74,000 SH   SOLE   74,000 0 0
TANDEM DIABETES CARE INC COM 875372104 411 562,500 SH   SOLE   562,500 0 0
TESARO INC COM 881569107 63,937 495,250 SH   SOLE   495,250 0 0
TETRAPHASE PHARMACEUTICALS I COM 88165N105 6,498 950,000 SH   SOLE   950,000 0 0
THERAPEUTICSMD INC COM 88338N107 8,464 1,600,000 SH   SOLE   1,600,000 0 0
THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 1,844 1,500,000 PRN   SOLE   1,500,000 0 0
THERAVANCE BIOPHARMA INC COM G8807B106 22,064 644,400 SH   SOLE   644,400 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 20,812 110,000 SH   SOLE   110,000 0 0
ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 8,681 163,000 SH   SOLE   163,000 0 0
UNITEDHEALTH GROUP INC COM 91324P102 89,895 459,000 SH   SOLE   459,000 0 0
VERTEX PHARMACEUTICALS INC COM 92532F100 23,034 151,500 SH   SOLE   151,500 0 0
WELLCARE HEALTH PLANS INC COM 94946T106 33,919 197,500 SH   SOLE   197,500 0 0
WILLIS TOWERS WATSON PUB LTD SHS G96629103 17,736 115,000 SH   SOLE   115,000 0 0
WRIGHT MED GROUP INC NOTE 2.000% 2/1 98235TAE7 1,086 1,000,000 PRN   SOLE   1,000,000 0 0
WRIGHT MED GROUP N V ORD SHS 0.03 PAR N96617118 17,333 670,000 SH   SOLE   670,000 0 0
ZAI LAB LTD ADR 98887Q104 8,438 312,500 SH   SOLE   312,500 0 0
ZIMMER BIOMET HLDGS INC COM 98956P102 2,471 21,100 SH   SOLE   21,100 0 0
ZOGENIX INC COM NEW 98978L204 3,505 100,000 SH   SOLE   100,000 0 0