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 66,663 1,350,000 SH   SOLE   1,350,000 0 0
ACADIA PHARMACEUTICALS INC COM 004225108 4,853 174,000 SH   SOLE   174,000 0 0
ACHILLION PHARMACEUTICALS IN COM 00448Q201 7,918 1,725,000 SH   SOLE   1,725,000 0 0
ACLARIS THERAPEUTICS INC COM 00461U105 11,933 440,000 SH   SOLE   440,000 0 0
ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 3,929 875,000 SH   SOLE   875,000 0 0
ADURO BIOTECH INC COM 00739L101 4,731 415,000 SH   SOLE   415,000 0 0
ADVANCED ACCELERATOR APPLIC SPONSORED ADS 00790T100 32,794 840,000 SH   SOLE   840,000 0 0
AEGLEA BIOTHERAPEUTICS INC COM 00773J103 2,013 524,089 SH   SOLE   524,089 0 0
AETNA INC NEW COM 00817Y108 58,910 388,000 SH   SOLE   388,000 0 0
AIMMUNE THERAPEUTICS INC COM 00900T107 6,024 293,000 SH   SOLE   293,000 0 0
ALDER BIOPHARMACEUTICALS INC COM 014339105 2,084 182,000 SH   SOLE   182,000 0 0
ALEXION PHARMACEUTICALS INC COM 015351109 56,333 463,000 SH   SOLE   463,000 0 0
ALIGN TECHNOLOGY INC COM 016255101 3,453 23,000 SH   SOLE   23,000 0 0
ALKERMES PLC SHS G01767105 3,014 52,000 SH   SOLE   52,000 0 0
ALLERGAN PLC SHS G0177J108 37,898 155,900 SH   SOLE   155,900 0 0
ALLERGAN PLC PFD CONV SER A G0177J116 4,336 5,000 SH   SOLE   5,000 0 0
ALMOST FAMILY INC COM 020409108 22,317 362,000 SH   SOLE   362,000 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 8,375 105,000 SH   SOLE   105,000 0 0
AMARIN CORP PLC SPONS ADR NEW 023111206 17,128 4,250,000 SH   SOLE   4,250,000 0 0
AMICUS THERAPEUTICS INC COM 03152W109 7,628 757,500 SH   SOLE   757,500 0 0
ANTHERA PHARMACEUTICALS INC COM 03674U300 268 165,705 SH   SOLE   165,705 0 0
ARDELYX INC COM 039697107 10,200 2,000,000 SH   SOLE   2,000,000 0 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 9,022 325,000 SH   SOLE   325,000 0 0
ASSEMBLY BIOSCIENCES INC COM 045396108 8,054 390,000 SH   SOLE   390,000 0 0
ATYR PHARMA INC COM 002120103 1,615 475,000 SH   SOLE   475,000 0 0
AUDENTES THERAPEUTICS INC COM 05070R104 11,386 595,200 SH   SOLE   595,200 0 0
AVEXIS INC COM 05366U100 14,378 175,000 SH   SOLE   175,000 0 0
AXOGEN INC COM 05463X106 6,281 375,000 SH   SOLE   375,000 0 0
AXOVANT SCIENCES LTD COM G0750W104 2,899 125,000 SH   SOLE   125,000 0 0
BARD C R INC COM 067383109 18,176 57,500 SH   SOLE   57,500 0 0
BAXTER INTL INC COM 071813109 13,924 230,000 SH   SOLE   230,000 0 0
BEIGENE LTD SPONSORED ADR 07725L102 11,925 265,000 SH   SOLE   265,000 0 0
BIOGEN INC COM 09062X103 14,382 53,000 SH   SOLE   53,000 0 0
BIOHAVEN PHARMACTL HLDG CO L COM G11196105 7,675 307,000 SH   SOLE   307,000 0 0
BIOMARIN PHARMACEUTICAL INC COM 09061G101 11,353 125,000 SH   SOLE   125,000 0 0
BLUEBIRD BIO INC COM 09609G100 3,362 32,000 SH   SOLE   32,000 0 0
BRISTOL MYERS SQUIBB CO COM 110122108 2,786 50,000 SH   SOLE   50,000 0 0
CARDIOME PHARMA CORP COM NO PAR 14159U301 5,424 1,200,000 SH   SOLE   1,200,000 0 0
CELGENE CORP COM 151020104 31,818 245,000 SH   SOLE   245,000 0 0
CERULEAN PHARMA INC COM 15708Q105 276 625,000 SH   SOLE   625,000 0 0
CHIASMA INC COM 16706W102 714 492,500 SH   SOLE   492,500 0 0
CHINA CORD BLOOD CORP SHS G21107100 8,342 880,000 SH   SOLE   880,000 0 0
CIDARA THERAPEUTICS INC COM 171757107 2,250 300,000 SH   SOLE   300,000 0 0
CIGNA CORPORATION COM 125509109 45,195 270,000 SH   SOLE   270,000 0 0
CLEARSIDE BIOMEDICAL INC COM 185063104 8,518 935,000 SH   SOLE   935,000 0 0
CLOVIS ONCOLOGY INC COM 189464100 21,675 231,500 SH   SOLE   231,500 0 0
COHERUS BIOSCIENCES INC COM 19249H103 9,957 693,900 SH   SOLE   693,900 0 0
COLLEGIUM PHARMACEUTICAL INC COM 19459J104 22,495 1,798,195 SH   SOLE   1,798,195 0 0
COMPUGEN LTD ORD M25722105 3,135 825,000 SH   SOLE   825,000 0 0
CORVUS PHARMACEUTICALS INC COM 221015100 5,113 422,600 SH   SOLE   422,600 0 0
DANAHER CORP DEL COM 235851102 18,988 225,000 SH   SOLE   225,000 0 0
DBV TECHNOLOGIES S A SPONSORED ADR 23306J101 2,607 73,000 SH   SOLE   73,000 0 0
DERMIRA INC COM 24983L104 11,295 387,600 SH   SOLE   387,600 0 0
DIMENSION THERAPEUTICS INC COM 25433V105 393 271,370 SH   SOLE   271,370 0 0
DYNAVAX TECHNOLOGIES CORP COM NEW 268158201 1,592 165,000 SH   SOLE   165,000 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 22,466 190,001 SH   SOLE   190,001 0 0
EGALET CORP COM 28226B104 711 300,000 SH   SOLE   300,000 0 0
EGALET CORP NOTE 5.500% 4/0 28226BAB0 5,002 7,800,000 PRN   SOLE   7,800,000 0 0
EPIZYME INC COM 29428V104 17,743 1,175,000 SH   SOLE   1,175,000 0 0
EXACT SCIENCES CORP COM 30063P105 15,474 437,500 SH   SOLE   437,500 0 0
EXELIXIS INC COM 30161Q104 4,310 175,000 SH   SOLE   175,000 0 0
FIBROGEN INC COM 31572Q808 9,044 280,000 SH   SOLE   280,000 0 0
FIVE PRIME THERAPEUTICS INC COM 33830X104 5,932 197,000 SH   SOLE   197,000 0 0
G1 THERAPEUTICS INC COM 3621LQ109 5,445 312,188 SH   SOLE   312,188 0 0
GALAPAGOS NV SPON ADR 36315X101 16,949 221,500 SH   SOLE   221,500 0 0
GENOCEA BIOSCIENCES INC COM 372427104 2,506 480,000 SH   SOLE   480,000 0 0
GILEAD SCIENCES INC COM 375558103 22,182 313,400 SH   SOLE   313,400 0 0
GLAUKOS CORP COM 377322102 2,592 62,500 SH   SOLE   62,500 0 0
GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 4,103 150,000 SH   SOLE   150,000 0 0
GLYCOMIMETICS INC COM 38000Q102 2,511 225,000 SH   SOLE   225,000 0 0
GW PHARMACEUTICALS PLC ADS 36197T103 36,641 365,500 SH   SOLE   365,500 0 0
HEALTHEQUITY INC COM 42226A107 2,541 51,000 SH   SOLE   51,000 0 0
HEALTHSOUTH CORP COM NEW 421924309 12,826 265,000 SH   SOLE   265,000 0 0
HILL ROM HLDGS INC COM 431475102 3,582 45,000 SH   SOLE   45,000 0 0
HOLOGIC INC COM 436440101 19,060 420,000 SH   SOLE   420,000 0 0
HUMANA INC COM 444859102 31,882 132,500 SH   SOLE   132,500 0 0
INCYTE CORP COM 45337C102 21,782 173,000 SH   SOLE   173,000 0 0
INFINITY PHARMACEUTICALS INC COM 45665G303 424 270,000 SH   SOLE   270,000 0 0
INNOVIVA INC COM 45781M101 2,560 200,000 SH   SOLE   200,000 0 0
INSMED INC COM PAR $.01 457669307 8,031 468,000 SH   SOLE   468,000 0 0
INTERSECT ENT INC COM 46071F103 9,643 345,000 SH   SOLE   345,000 0 0
INTRA CELLULAR THERAPIES INC COM 46116X101 2,329 187,500 SH   SOLE   187,500 0 0
INTUITIVE SURGICAL INC COM NEW 46120E602 44,898 48,000 SH   SOLE   48,000 0 0
INVITAE CORP COM 46185L103 11,472 1,200,000 SH   SOLE   1,200,000 0 0
JAZZ PHARMACEUTICALS PLC SHS USD G50871105 19,235 123,700 SH   SOLE   123,700 0 0
JOHNSON & JOHNSON COM 478160104 23,151 175,000 SH   SOLE   175,000 0 0
JUNO THERAPEUTICS INC COM 48205A109 6,725 225,000 SH   SOLE   225,000 0 0
KITE PHARMA INC COM 49803L109 6,998 67,500 SH   SOLE   67,500 0 0
LEXICON PHARMACEUTICALS INC COM NEW 528872302 6,473 393,500 SH Call SOLE   393,500 0 0
LOXO ONCOLOGY INC COM 548862101 23,095 288,000 SH   SOLE   288,000 0 0
MACROGENICS INC COM 556099109 3,940 225,000 SH   SOLE   225,000 0 0
MADRIGAL PHARMACEUTICALS INC COM 558868105 8,780 540,000 SH   SOLE   540,000 0 0
MEDICINES CO COM 584688105 26,396 694,446 SH   SOLE   694,446 0 0
MEDICINES CO NOTE 2.500% 1/1 584688AE5 3,913 3,000,000 PRN   SOLE   3,000,000 0 0
MEDICINES CO NOTE 2.750% 7/1 584688AG0 5,256 5,000,000 PRN   SOLE   5,000,000 0 0
MEDTRONIC PLC SHS G5960L103 35,500 400,000 SH   SOLE   400,000 0 0
MERCK & CO INC COM 58933Y105 48,580 758,000 SH   SOLE   758,000 0 0
MERSANA THERAPEUTICS INC COM 59045L106 21,345 1,527,893 SH   SOLE   1,527,893 0 0
MERUS N V COM N5749R100 6,372 402,000 SH   SOLE   402,000 0 0
MOLINA HEALTHCARE INC COM 60855R100 18,229 263,500 SH   SOLE   263,500 0 0
MYOVANT SCIENCES LTD COM G637AM102 1,755 150,000 SH   SOLE   150,000 0 0
NABRIVA THERAPEUTICS PLC SHS G63637105 5,502 525,000 SH   SOLE   525,000 0 0
NEUROCRINE BIOSCIENCES INC COM 64125C109 19,274 419,000 SH   SOLE   419,000 0 0
NEURODERM LTD ORD SHS M74231107 7,107 237,700 SH   SOLE   237,700 0 0
NEWLINK GENETICS CORP COM 651511107 533 72,500 SH   SOLE   72,500 0 0
NIVALIS THERAPEUTICS INC COM 65481J109 1,446 600,000 SH   SOLE   600,000 0 0
NOVADAQ TECHNOLOGIES INC COM 66987G102 1,758 150,000 SH   SOLE   150,000 0 0
NOVAVAX INC COM 670002104 943 820,000 SH   SOLE   820,000 0 0
OBSEVA SA COM H5861P103 7,182 840,000 SH   SOLE   840,000 0 0
OREXIGEN THERAPEUTICS INC COM NEW 686164302 479 165,300 SH   SOLE   165,300 0 0
OTONOMY INC COM 68906L105 3,959 210,000 SH   SOLE   210,000 0 0
PACIRA PHARMACEUTICALS INC COM 695127100 49,727 1,042,500 SH   SOLE   1,042,500 0 0
PARATEK PHARMACEUTICALS INC COM 699374302 14,460 600,000 SH   SOLE   600,000 0 0
PENUMBRA INC COM 70975L107 27,246 310,500 SH   SOLE   310,500 0 0
PERRIGO CO PLC SHS G97822103 740 9,800 SH   SOLE   9,800 0 0
PORTOLA PHARMACEUTICALS INC COM 737010108 7,847 139,700 SH   SOLE   139,700 0 0
PORTOLA PHARMACEUTICALS INC COM 737010108 7,864 140,000 SH Call SOLE   140,000 0 0
PRA HEALTH SCIENCES INC COM 69354M108 34,692 462,500 SH   SOLE   462,500 0 0
PROTEOSTASIS THERAPEUTICS IN COM 74373B109 2,106 450,000 SH   SOLE   450,000 0 0
PROTHENA CORP PLC SHS G72800108 16,750 309,500 SH   SOLE   309,500 0 0
PUMA BIOTECHNOLOGY INC COM 74587V107 16,256 186,000 SH   SOLE   186,000 0 0
RA PHARMACEUTICALS INC COM 74933V108 11,244 600,000 SH   SOLE   600,000 0 0
RADIUS HEALTH INC COM NEW 750469207 41,171 910,250 SH   SOLE   910,250 0 0
REGENERON PHARMACEUTICALS COM 75886F107 7,858 16,000 SH   SOLE   16,000 0 0
RETROPHIN INC COM 761299106 7,756 400,000 SH   SOLE   400,000 0 0
RIGEL PHARMACEUTICALS INC COM NEW 766559603 2,730 1,000,000 SH   SOLE   1,000,000 0 0
RTI SURGICAL INC COM 74975N105 11,408 1,950,000 SH   SOLE   1,950,000 0 0
SAREPTA THERAPEUTICS INC COM 803607100 6,911 205,000 SH   SOLE   205,000 0 0
SCYNEXIS INC COM 811292101 1,360 760,000 SH   SOLE   760,000 0 0
SEATTLE GENETICS INC COM 812578102 5,174 100,000 SH   SOLE   100,000 0 0
SERES THERAPEUTICS INC COM 81750R102 2,486 220,000 SH   SOLE   220,000 0 0
SPARK THERAPEUTICS INC COM 84652J103 37,338 625,000 SH   SOLE   625,000 0 0
STERIS PLC SHS USD G84720104 5,909 72,500 SH   SOLE   72,500 0 0
TANDEM DIABETES CARE INC COM 875372104 450 562,500 SH   SOLE   562,500 0 0
TESARO INC COM 881569107 68,601 490,500 SH   SOLE   490,500 0 0
TETRAPHASE PHARMACEUTICALS I COM 88165N105 4,977 698,000 SH   SOLE   698,000 0 0
THERAPEUTICSMD INC COM 88338N107 8,432 1,600,000 SH   SOLE   1,600,000 0 0
THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 2,032 1,500,000 PRN   SOLE   1,500,000 0 0
THERAVANCE BIOPHARMA INC COM G8807B106 23,904 600,000 SH   SOLE   600,000 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 19,192 110,000 SH   SOLE   110,000 0 0
ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 9,969 160,500 SH   SOLE   160,500 0 0
UNITEDHEALTH GROUP INC COM 91324P102 58,222 314,000 SH   SOLE   314,000 0 0
VERTEX PHARMACEUTICALS INC COM 92532F100 16,624 129,000 SH   SOLE   129,000 0 0
WALGREENS BOOTS ALLIANCE INC COM 931427108 6,735 86,000 SH   SOLE   86,000 0 0
WELLCARE HEALTH PLANS INC COM 94946T106 35,463 197,500 SH   SOLE   197,500 0 0
WILLIS TOWERS WATSON PUB LTD SHS G96629103 16,001 110,000 SH   SOLE   110,000 0 0
WRIGHT MED GROUP INC NOTE 2.000% 2/1 98235TAE7 1,116 1,000,000 PRN   SOLE   1,000,000 0 0
WRIGHT MED GROUP N V ORD SHS 0.03 PAR N96617118 18,418 670,000 SH   SOLE   670,000 0 0
ZIMMER BIOMET HLDGS INC COM 98956P102 2,709 21,100 SH   SOLE   21,100 0 0