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
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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 30,739 325,000 SH   SOLE   325,000 0 0
ACADIA HEALTHCARE COMPANY IN COM 00404A109 24,640 700,000 SH   SOLE   700,000 0 0
ACHILLION PHARMACEUTICALS IN COM 00448Q201 8,832 2,400,000 SH   SOLE   2,400,000 0 0
ACLARIS THERAPEUTICS INC COM 00461U105 12,778 880,000 SH   SOLE   880,000 0 0
ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 10,170 750,000 SH   SOLE   750,000 0 0
ADVERUM BIOTECHNOLOGIES INC COM 00773U108 5,445 900,000 SH   SOLE   900,000 0 0
AEGLEA BIOTHERAPEUTICS INC COM 00773J103 6,221 650,000 SH   SOLE   650,000 0 0
AGILENT TECHNOLOGIES INC COM 00846U101 11,576 164,100 SH   SOLE   164,100 0 0
ALDER BIOPHARMACEUTICALS INC COM 014339105 27,181 1,632,500 SH   SOLE   1,632,500 0 0
ALDER BIOPHARMACEUTICALS INC NOTE 2.500% 2/0 014339AA3 5,362 5,000,000 PRN   SOLE   5,000,000 0 0
ALEXION PHARMACEUTICALS INC COM 015351109 41,703 300,000 SH   SOLE   300,000 0 0
ALIGN TECHNOLOGY INC COM 016255101 26,407 67,500 SH   SOLE   67,500 0 0
ALLAKOS INC COM 01671P100 18,221 405,000 SH   SOLE   405,000 0 0
ALLERGAN PLC SHS G0177J108 3,365 17,665 SH   SOLE   17,665 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 17,198 196,500 SH   SOLE   196,500 0 0
AMARIN CORP PLC SPONS ADR NEW 023111206 70,368 4,325,000 SH   SOLE   4,325,000 0 0
AMICUS THERAPEUTICS INC COM 03152W109 12,090 1,000,000 SH   SOLE   1,000,000 0 0
ANAPTYSBIO INC COM 032724106 16,462 165,000 SH   SOLE   165,000 0 0
APTINYX INC COM 03836N103 8,833 305,000 SH   SOLE   305,000 0 0
ARDELYX INC COM 039697107 10,986 2,525,557 SH   SOLE   2,525,557 0 0
ARENA PHARMACEUTICALS INC COM NEW 040047607 17,258 375,000 SH   SOLE   375,000 0 0
ARGENX SE SPONSORED ADR 04016X101 12,514 165,000 SH   SOLE   165,000 0 0
ARVINAS INC COM 04335A105 2,531 150,000 SH   SOLE   150,000 0 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 17,254 243,500 SH   SOLE   243,500 0 0
ASSEMBLY BIOSCIENCES INC COM 045396108 18,199 490,000 SH   SOLE   490,000 0 0
AUDENTES THERAPEUTICS INC COM 05070R104 16,827 425,025 SH   SOLE   425,025 0 0
AXOGEN INC COM 05463X106 20,027 543,474 SH   SOLE   543,474 0 0
BAXTER INTL INC COM 071813109 22,896 297,000 SH   SOLE   297,000 0 0
BEIGENE LTD SPONSORED ADR 07725L102 37,027 215,000 SH   SOLE   215,000 0 0
BIOCRYST PHARMACEUTICALS COM 09058V103 5,341 700,000 SH   SOLE   700,000 0 0
BIOGEN INC COM 09062X103 17,666 50,000 SH   SOLE   50,000 0 0
BIOHAVEN PHARMACTL HLDG CO L COM G11196105 9,763 260,000 SH   SOLE   260,000 0 0
BIOMARIN PHARMACEUTICAL INC COM 09061G101 12,121 125,000 SH   SOLE   125,000 0 0
BLUEBIRD BIO INC COM 09609G100 7,665 52,500 SH   SOLE   52,500 0 0
BLUEPRINT MEDICINES CORP COM 09627Y109 15,612 200,000 SH   SOLE   200,000 0 0
BOSTON SCIENTIFIC CORP COM 101137107 30,800 800,000 SH   SOLE   800,000 0 0
CELGENE CORP COM 151020104 32,252 360,400 SH   SOLE   360,400 0 0
CHIASMA INC COM 16706W102 1,890 525,000 SH   SOLE   525,000 0 0
CIDARA THERAPEUTICS INC COM 171757107 1,320 300,000 SH   SOLE   300,000 0 0
CLEARSIDE BIOMEDICAL INC COM 185063104 5,996 975,000 SH   SOLE   975,000 0 0
CLEMENTIA PHARMACEUTICALS IN COM 185575107 3,847 345,000 SH   SOLE   345,000 0 0
CLOVIS ONCOLOGY INC COM 189464100 7,962 271,100 SH   SOLE   271,100 0 0
COHERUS BIOSCIENCES INC COM 19249H103 11,055 670,000 SH   SOLE   670,000 0 0
COLLEGIUM PHARMACEUTICAL INC COM 19459J104 24,322 1,650,100 SH   SOLE   1,650,100 0 0
COMPUGEN LTD ORD M25722105 4,151 1,078,165 SH   SOLE   1,078,165 0 0
CORREVIO PHARMA CORP COM 22026V105 4,824 1,200,000 SH   SOLE   1,200,000 0 0
CORVUS PHARMACEUTICALS INC COM 221015100 4,934 575,000 SH   SOLE   575,000 0 0
CYMABAY THERAPEUTICS INC COM 23257D103 6,799 613,604 SH   SOLE   613,604 0 0
DAVITA INC COM 23918K108 29,261 408,500 SH   SOLE   408,500 0 0
DERMIRA INC COM 24983L104 6,540 600,000 SH   SOLE   600,000 0 0
DERMIRA INC NOTE 3.000% 5/1 24983LAB0 834 1,000,000 PRN   SOLE   1,000,000 0 0
DYNAVAX TECHNOLOGIES CORP COM NEW 268158201 3,323 268,000 SH   SOLE   268,000 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 31,338 180,000 SH   SOLE   180,000 0 0
ELANCO ANIMAL HEALTH INC COM 28414H103 13,084 375,000 SH   SOLE   375,000 0 0
ENANTA PHARMACEUTICALS INC COM 29251M106 7,905 92,500 SH   SOLE   92,500 0 0
ENCOMPASS HEALTH CORP COM 29261A100 52,733 676,500 SH   SOLE   676,500 0 0
ENDOCYTE INC COM 29269A102 15,096 850,000 SH   SOLE   850,000 0 0
EPIZYME INC COM 29428V104 13,157 1,241,253 SH   SOLE   1,241,253 0 0
EXACT SCIENCES CORP COM 30063P105 30,384 385,000 SH   SOLE   385,000 0 0
EXELIXIS INC COM 30161Q104 10,543 595,000 SH   SOLE   595,000 0 0
FIBROGEN INC COM 31572Q808 18,590 306,000 SH   SOLE   306,000 0 0
FIVE PRIME THERAPEUTICS INC COM 33830X104 8,324 598,000 SH   SOLE   598,000 0 0
G1 THERAPEUTICS INC COM 3621LQ109 12,187 233,073 SH   SOLE   233,073 0 0
GALAPAGOS NV SPON ADR 36315X101 19,956 177,500 SH   SOLE   177,500 0 0
GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 5,700 150,000 SH   SOLE   150,000 0 0
GLOBAL CORD BLOOD CORPORATIO SHS G39342103 6,466 925,000 SH   SOLE   925,000 0 0
GTX INC DEL COM NEW 40052B207 79 50,000 SH Call SOLE   50,000 0 0
GW PHARMACEUTICALS PLC ADS 36197T103 69,096 400,000 SH   SOLE   400,000 0 0
HCA HEALTHCARE INC COM 40412C101 63,300 455,000 SH   SOLE   455,000 0 0
HERON THERAPEUTICS INC COM 427746102 16,616 525,000 SH   SOLE   525,000 0 0
HOMOLOGY MEDICINES INC COM 438083107 10,744 470,000 SH   SOLE   470,000 0 0
IDEXX LABS INC COM 45168D104 20,847 83,500 SH   SOLE   83,500 0 0
IMMUNOMEDICS INC COM 452907108 16,143 775,000 SH   SOLE   775,000 0 0
INCYTE CORP COM 45337C102 24,323 352,100 SH   SOLE   352,100 0 0
INFLARX NV COM N44821101 6,092 177,500 SH   SOLE   177,500 0 0
INOGEN INC COM 45780L104 30,759 126,000 SH   SOLE   126,000 0 0
INSMED INC COM PAR $.01 457669307 17,996 890,000 SH   SOLE   890,000 0 0
INSMED INC NOTE 1.750% 1/1 457669AA7 5,073 6,000,000 PRN   SOLE   6,000,000 0 0
INTERSECT ENT INC COM 46071F103 13,225 460,000 SH   SOLE   460,000 0 0
INTRA CELLULAR THERAPIES INC COM 46116X101 4,069 187,500 SH   SOLE   187,500 0 0
INTUITIVE SURGICAL INC COM NEW 46120E602 81,164 141,400 SH   SOLE   141,400 0 0
INVITAE CORP COM 46185L103 23,422 1,400,000 SH   SOLE   1,400,000 0 0
IRHYTHM TECHNOLOGIES INC COM 450056106 45,437 480,000 SH   SOLE   480,000 0 0
KURA ONCOLOGY INC COM 50127T109 7,088 405,000 SH   SOLE   405,000 0 0
LA JOLLA PHARMACEUTICAL CO COM PAR $.0001 2 503459604 5,673 281,800 SH   SOLE   281,800 0 0
LOXO ONCOLOGY INC COM 548862101 34,675 202,981 SH   SOLE   202,981 0 0
MACROGENICS INC COM 556099109 5,896 275,000 SH   SOLE   275,000 0 0
MADRIGAL PHARMACEUTICALS INC COM 558868105 73,232 342,000 SH   SOLE   342,000 0 0
MEDICINES CO COM 584688105 20,638 690,000 SH   SOLE   690,000 0 0
MEDICINES CO NOTE 2.500% 1/1 584688AE5 3,231 3,000,000 PRN   SOLE   3,000,000 0 0
MEDICINES CO NOTE 2.750% 7/1 584688AG0 4,560 5,000,000 PRN   SOLE   5,000,000 0 0
MENLO THERAPEUTICS INC COM 586858102 3,251 330,000 SH   SOLE   330,000 0 0
MERSANA THERAPEUTICS INC COM 59045L106 10,000 1,000,000 SH   SOLE   1,000,000 0 0
MIRATI THERAPEUTICS INC COM 60468T105 11,304 240,000 SH   SOLE   240,000 0 0
MOLINA HEALTHCARE INC COM 60855R100 81,042 545,000 SH   SOLE   545,000 0 0
MOMENTA PHARMACEUTICALS INC COM 60877T100 12,493 475,000 SH   SOLE   475,000 0 0
MYOVANT SCIENCES LTD COM G637AM102 9,226 347,500 SH   SOLE   347,500 0 0
NABRIVA THERAPEUTICS PLC SHS G63637105 4,860 1,800,000 SH   SOLE   1,800,000 0 0
NEUROCRINE BIOSCIENCES INC COM 64125C109 79,303 645,000 SH   SOLE   645,000 0 0
NEUROCRINE BIOSCIENCES INC NOTE 2.250% 5/1 64125CAD1 1,707 1,000,000 PRN   SOLE   1,000,000 0 0
NOVAVAX INC COM 670002104 6,110 3,250,000 SH   SOLE   3,250,000 0 0
NOVOCURE LTD ORD SHS G6674U108 1,310 25,000 SH   SOLE   25,000 0 0
OBSEVA SA COM H5861P103 20,194 1,120,000 SH   SOLE   1,120,000 0 0
ODONATE THERAPEUTICS INC COM 676079106 8,453 435,500 SH   SOLE   435,500 0 0
PACIRA PHARMACEUTICALS INC COM 695127100 63,525 1,292,479 SH   SOLE   1,292,479 0 0
PACIRA PHARMACEUTICALS INC NOTE 2.375% 4/0 695127AD2 1,060 1,000,000 PRN   SOLE   1,000,000 0 0
PARATEK PHARMACEUTICALS INC COM 699374302 4,365 450,000 SH   SOLE   450,000 0 0
PENUMBRA INC COM 70975L107 35,209 235,200 SH   SOLE   235,200 0 0
PORTOLA PHARMACEUTICALS INC COM 737010108 8,623 323,800 SH   SOLE   323,800 0 0
PRA HEALTH SCIENCES INC COM 69354M108 31,762 288,247 SH   SOLE   288,247 0 0
PUMA BIOTECHNOLOGY INC COM 74587V107 22,356 487,600 SH   SOLE   487,600 0 0
RA PHARMACEUTICALS INC COM 74933V108 13,568 750,000 SH   SOLE   750,000 0 0
RADIUS HEALTH INC COM NEW 750469207 22,562 1,267,500 SH   SOLE   1,267,500 0 0
RADIUS HEALTH INC NOTE 3.000% 9/0 750469AA6 1,153 1,500,000 PRN   SOLE   1,500,000 0 0
RESTORBIO INC COM 76133L103 6,056 400,000 SH   SOLE   400,000 0 0
RETROPHIN INC COM 761299106 11,492 400,000 SH   SOLE   400,000 0 0
RHYTHM PHARMACEUTICALS INC COM 76243J105 6,272 215,000 SH   SOLE   215,000 0 0
RIGEL PHARMACEUTICALS INC COM NEW 766559603 13,241 4,125,000 SH   SOLE   4,125,000 0 0
RTI SURGICAL INC COM 74975N105 8,775 1,950,000 SH   SOLE   1,950,000 0 0
SAGE THERAPEUTICS INC COM 78667J108 6,921 49,000 SH   SOLE   49,000 0 0
SAREPTA THERAPEUTICS INC COM 803607100 50,149 310,500 SH   SOLE   310,500 0 0
SCYNEXIS INC COM 811292101 984 820,000 SH   SOLE   820,000 0 0
SERES THERAPEUTICS INC COM 81750R102 1,670 220,000 SH   SOLE   220,000 0 0
SOLID BIOSCIENCES INC COM 83422E105 4,482 95,000 SH   SOLE   95,000 0 0
SPARK THERAPEUTICS INC COM 84652J103 29,321 537,500 SH   SOLE   537,500 0 0
SPERO THERAPEUTICS INC COM 84833T103 5,518 525,000 SH   SOLE   525,000 0 0
STRYKER CORP COM 863667101 31,805 179,000 SH   SOLE   179,000 0 0
TELEFLEX INC COM 879369106 32,995 124,000 SH   SOLE   124,000 0 0
TESARO INC COM 881569107 28,672 735,000 SH   SOLE   735,000 0 0
THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 1,770 1,500,000 PRN   SOLE   1,500,000 0 0
THERAVANCE BIOPHARMA INC COM G8807B106 17,969 550,000 SH   SOLE   550,000 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 23,432 96,000 SH   SOLE   96,000 0 0
TRANSLATE BIO INC COM 89374L104 10,092 1,009,179 SH   SOLE   1,009,179 0 0
ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 15,268 200,000 SH   SOLE   200,000 0 0
UNITEDHEALTH GROUP INC COM 91324P102 156,724 589,098 SH   SOLE   589,098 0 0
UROVANT SCIENCES LTD SHS G9381B108 1,200 100,000 SH   SOLE   100,000 0 0
VERTEX PHARMACEUTICALS INC COM 92532F100 37,777 196,000 SH   SOLE   196,000 0 0
VIKING THERAPEUTICS INC COM 92686J106 3,484 200,000 SH   SOLE   200,000 0 0
WELLCARE HEALTH PLANS INC COM 94946T106 75,475 235,500 SH   SOLE   235,500 0 0
WEST PHARMACEUTICAL SVSC INC COM 955306105 19,755 160,000 SH   SOLE   160,000 0 0
WRIGHT MED GROUP N V ORD SHS 0.03 PAR N96617118 29,020 1,000,000 SH   SOLE   1,000,000 0 0
ZAI LAB LTD ADR 98887Q104 6,818 350,000 SH   SOLE   350,000 0 0
ZIMMER BIOMET HLDGS INC COM 98956P102 29,581 225,000 SH   SOLE   225,000 0 0
ZOGENIX INC COM NEW 98978L204 11,656 235,000 SH   SOLE   235,000 0 0