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
10X GENOMICS INC CL A COM 88025U109 3,200 63,500 SH   SOLE   63,500 0 0
ABBOTT LABS COM 002824100 10,250 122,500 SH   SOLE   122,500 0 0
ABBVIE INC COM 00287Y109 39,753 525,000 SH   SOLE   525,000 0 0
ACADIA HEALTHCARE COMPANY IN COM 00404A109 40,093 1,290,000 SH   SOLE   1,290,000 0 0
ACADIA PHARMACEUTICALS INC COM 004225108 6,730 187,000 SH   SOLE   187,000 0 0
ACHILLION PHARMACEUTICALS IN COM 00448Q201 13,770 3,825,000 SH   SOLE   3,825,000 0 0
ACLARIS THERAPEUTICS INC COM 00461U105 3,213 2,974,754 SH   SOLE   2,974,754 0 0
ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 1,321 875,000 SH   SOLE   875,000 0 0
ADAPTIVE BIOTECHNOLOGIES COR COM 00650F109 16,841 545,000 SH   SOLE   545,000 0 0
AEGLEA BIOTHERAPEUTICS INC COM 00773J103 6,152 800,000 SH   SOLE   800,000 0 0
AGIOS PHARMACEUTICALS INC COM 00847X104 11,421 352,500 SH   SOLE   352,500 0 0
AKERO THERAPEUTICS INC COM 00973Y108 5,119 225,000 SH   SOLE   225,000 0 0
ALDER BIOPHARMACEUTICALS INC COM 014339105 24,518 1,300,000 SH   SOLE   1,300,000 0 0
ALIGN TECHNOLOGY INC COM 016255101 20,064 110,900 SH   SOLE   110,900 0 0
ALLAKOS INC COM 01671P100 22,803 290,000 SH   SOLE   290,000 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 26,579 330,500 SH   SOLE   330,500 0 0
AMARIN CORP PLC SPONS ADR NEW 023111206 70,494 4,650,000 SH   SOLE   4,650,000 0 0
AMGEN INC COM 031162100 24,382 126,000 SH   SOLE   126,000 0 0
AMICUS THERAPEUTICS INC COM 03152W109 8,020 1,000,000 SH   SOLE   1,000,000 0 0
ANAPTYSBIO INC COM 032724106 8,398 240,000 SH   SOLE   240,000 0 0
ANTHEM INC COM 036752103 6,483 27,000 SH   SOLE   27,000 0 0
ARDELYX INC COM 039697107 14,360 3,055,261 SH   SOLE   3,055,261 0 0
ARGENX SE SPONSORED ADR 04016X101 20,707 181,700 SH   SOLE   181,700 0 0
ARVINAS INC COM 04335A105 3,233 150,000 SH   SOLE   150,000 0 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 20,564 213,500 SH   SOLE   213,500 0 0
ASSEMBLY BIOSCIENCES INC COM 045396108 12,779 1,300,000 SH   SOLE   1,300,000 0 0
AUDENTES THERAPEUTICS INC COM 05070R104 11,517 410,000 SH   SOLE   410,000 0 0
AXONICS MODULATION TECH INC COM 05465P101 5,451 202,500 SH   SOLE   202,500 0 0
BAXTER INTL INC COM 071813109 33,676 385,000 SH   SOLE   385,000 0 0
BEIGENE LTD SPONSORED ADR 07725L102 26,304 214,800 SH   SOLE   214,800 0 0
BIOHAVEN PHARMACTL HLDG CO L COM G11196105 14,331 343,500 SH   SOLE   343,500 0 0
BIOMARIN PHARMACEUTICAL INC COM 09061G101 9,605 142,500 SH   SOLE   142,500 0 0
BLUEBIRD BIO INC COM 09609G100 4,316 47,000 SH   SOLE   47,000 0 0
BLUEPRINT MEDICINES CORP COM 09627Y109 24,502 333,500 SH   SOLE   333,500 0 0
BOSTON SCIENTIFIC CORP COM 101137107 39,469 970,000 SH   SOLE   970,000 0 0
CELGENE CORP COM 151020104 18,385 185,150 SH   SOLE   185,150 0 0
CENTENE CORP DEL COM 15135B101 9,941 229,800 SH   SOLE   229,800 0 0
CHIASMA INC COM 16706W102 4,455 900,000 SH   SOLE   900,000 0 0
CIGNA CORP NEW COM 125523100 32,923 216,900 SH   SOLE   216,900 0 0
CLOVIS ONCOLOGY INC COM 189464100 1,006 256,000 SH   SOLE   256,000 0 0
COHERUS BIOSCIENCES INC COM 19249H103 38,089 1,880,000 SH   SOLE   1,880,000 0 0
COLLEGIUM PHARMACEUTICAL INC COM 19459J104 18,114 1,577,893 SH   SOLE   1,577,893 0 0
COMPUGEN LTD ORD M25722105 4,653 1,100,000 SH   SOLE   1,100,000 0 0
CORREVIO PHARMA CORP COM 22026V105 2,400 1,200,000 SH   SOLE   1,200,000 0 0
CORVUS PHARMACEUTICALS INC COM 221015100 1,204 400,000 SH   SOLE   400,000 0 0
COVETRUS INC COM 22304C100 246 20,683 SH   SOLE   20,683 0 0
CYMABAY THERAPEUTICS INC COM 23257D103 4,608 900,000 SH   SOLE   900,000 0 0
DECIPHERA PHARMACEUTICALS IN COM 24344T101 8,485 250,000 SH   SOLE   250,000 0 0
DERMIRA INC COM 24983L104 4,952 775,000 SH   SOLE   775,000 0 0
DERMIRA INC NOTE 3.000% 5/1 24983LAB0 844 1,000,000 PRN   SOLE   1,000,000 0 0
DYNAVAX TECHNOLOGIES CORP COM NEW 268158201 6,614 1,850,000 SH   SOLE   1,850,000 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 40,353 183,500 SH   SOLE   183,500 0 0
ENCOMPASS HEALTH CORP COM 29261A100 51,573 815,000 SH   SOLE   815,000 0 0
EPIZYME INC COM 29428V104 19,084 1,850,100 SH   SOLE   1,850,100 0 0
EXACT SCIENCES CORP COM 30063P105 39,017 431,750 SH   SOLE   431,750 0 0
FIBROGEN INC COM 31572Q808 11,316 306,000 SH   SOLE   306,000 0 0
FIVE PRIME THERAPEUTICS INC COM 33830X104 3,003 775,000 SH   SOLE   775,000 0 0
FRESHPET INC COM 358039105 17,681 355,250 SH   SOLE   355,250 0 0
GALAPAGOS NV SPON ADR 36315X101 26,716 175,000 SH   SOLE   175,000 0 0
GAMIDA CELL LTD SHS M47364100 4,330 1,000,000 SH   SOLE   1,000,000 0 0
GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 12,858 265,000 SH   SOLE   265,000 0 0
GLOBAL CORD BLOOD CORPORATIO SHS G39342103 4,477 925,000 SH   SOLE   925,000 0 0
GUARDANT HEALTH INC COM 40131M109 12,128 190,000 SH   SOLE   190,000 0 0
GW PHARMACEUTICALS PLC ADS 36197T103 10,928 95,000 SH   SOLE   95,000 0 0
HCA HEALTHCARE INC COM 40412C101 56,296 467,500 SH   SOLE   467,500 0 0
HEALTH CATALYST INC COM 42225T107 3,955 125,000 SH   SOLE   125,000 0 0
HOMOLOGY MEDICINES INC COM 438083107 7,693 425,000 SH   SOLE   425,000 0 0
IDEXX LABS INC COM 45168D104 32,686 120,200 SH   SOLE   120,200 0 0
IMMUNOMEDICS INC COM 452907108 11,868 895,000 SH   SOLE   895,000 0 0
INCYTE CORP COM 45337C102 23,182 312,300 SH   SOLE   312,300 0 0
INSMED INC COM PAR $.01 457669307 15,700 890,000 SH   SOLE   890,000 0 0
INSMED INC NOTE 1.750% 1/1 457669AA7 5,031 6,000,000 PRN   SOLE   6,000,000 0 0
INSULET CORP COM 45784P101 42,964 260,500 SH   SOLE   260,500 0 0
INTERCEPT PHARMACEUTICALS IN COM 45845P108 3,610 54,400 SH   SOLE   54,400 0 0
INTERSECT ENT INC COM 46071F103 14,841 872,500 SH   SOLE   872,500 0 0
INTUITIVE SURGICAL INC COM NEW 46120E602 82,339 152,500 SH   SOLE   152,500 0 0
INVITAE CORP COM 46185L103 21,679 1,125,000 SH   SOLE   1,125,000 0 0
IRHYTHM TECHNOLOGIES INC COM 450056106 41,131 555,000 SH   SOLE   555,000 0 0
JOHNSON & JOHNSON COM 478160104 7,245 56,000 SH   SOLE   56,000 0 0
KALEIDO BIOSCIENCES INC COM 483347100 753 100,050 SH   SOLE   100,050 0 0
KARUNA THERAPEUTICS INC COM 48576A100 5,882 360,400 SH   SOLE   360,400 0 0
LA JOLLA PHARMACEUTICAL CO COM PAR $.0001 2 503459604 3,740 425,000 SH   SOLE   425,000 0 0
MACROGENICS INC COM 556099109 3,828 300,000 SH   SOLE   300,000 0 0
MADRIGAL PHARMACEUTICALS INC COM 558868105 23,486 272,400 SH   SOLE   272,400 0 0
MEDICINES CO COM 584688105 40,000 800,000 SH   SOLE   800,000 0 0
MEDICINES CO NOTE 2.500% 1/1 584688AE5 4,521 3,000,000 PRN   SOLE   3,000,000 0 0
MEDICINES CO NOTE 2.750% 7/1 584688AG0 6,050 5,000,000 PRN   SOLE   5,000,000 0 0
MERSANA THERAPEUTICS INC COM 59045L106 2,212 1,400,000 SH   SOLE   1,400,000 0 0
MIRATI THERAPEUTICS INC COM 60468T105 20,062 257,500 SH   SOLE   257,500 0 0
MIRUM PHARMACEUTICALS INC COM 604749101 7,948 790,048 SH   SOLE   790,048 0 0
MOLINA HEALTHCARE INC COM 60855R100 23,535 214,500 SH   SOLE   214,500 0 0
MOMENTA PHARMACEUTICALS INC COM 60877T100 5,184 400,000 SH   SOLE   400,000 0 0
MYOVANT SCIENCES LTD COM G637AM102 2,340 450,000 SH   SOLE   450,000 0 0
NABRIVA THERAPEUTICS PLC SHS G63637105 4,600 2,300,000 SH   SOLE   2,300,000 0 0
NEUROCRINE BIOSCIENCES INC COM 64125C109 111,061 1,232,500 SH   SOLE   1,232,500 0 0
NEUROCRINE BIOSCIENCES INC NOTE 2.250% 5/1 64125CAD1 1,372 1,000,000 PRN   SOLE   1,000,000 0 0
NEVRO CORP COM 64157F103 20,848 242,500 SH   SOLE   242,500 0 0
NGM BIOPHARMACEUTICALS INC COM 62921N105 4,863 351,100 SH   SOLE   351,100 0 0
NOVAVAX INC COM NEW 670002401 816 162,500 SH   SOLE   162,500 0 0
NOVOCURE LTD ORD SHS G6674U108 12,900 172,500 SH   SOLE   172,500 0 0
OBSEVA SA COM H5861P103 11,329 1,360,000 SH   SOLE   1,360,000 0 0
ODONATE THERAPEUTICS INC COM 676079106 11,193 430,000 SH   SOLE   430,000 0 0
PACIRA BIOSCIENCES COM 695127100 43,781 1,150,000 SH   SOLE   1,150,000 0 0
PACIRA BIOSCIENCES NOTE 2.375% 4/0 695127AD2 988 1,000,000 PRN   SOLE   1,000,000 0 0
PARATEK PHARMACEUTICALS INC COM 699374302 1,944 450,000 SH   SOLE   450,000 0 0
PENUMBRA INC COM 70975L107 32,614 242,500 SH   SOLE   242,500 0 0
PHASEBIO PHARMACEUTICALS INC COM 717224109 5,908 1,416,900 SH   SOLE   1,416,900 0 0
PHREESIA INC COM 71944F106 8,751 361,000 SH   SOLE   361,000 0 0
PORTOLA PHARMACEUTICALS INC COM 737010108 28,161 1,050,000 SH   SOLE   1,050,000 0 0
PROTEOSTASIS THERAPEUTICS IN COM 74373B109 338 400,000 SH   SOLE   400,000 0 0
PUMA BIOTECHNOLOGY INC COM 74587V107 6,323 587,400 SH   SOLE   587,400 0 0
RA PHARMACEUTICALS INC COM 74933V108 19,748 835,000 SH   SOLE   835,000 0 0
RADIUS HEALTH INC COM NEW 750469207 33,475 1,300,000 SH   SOLE   1,300,000 0 0
RADIUS HEALTH INC NOTE 3.000% 9/0 750469AA6 1,367 1,500,000 PRN   SOLE   1,500,000 0 0
RESTORBIO INC COM 76133L103 3,536 400,000 SH   SOLE   400,000 0 0
RETROPHIN INC COM 761299106 11,011 950,000 SH   SOLE   950,000 0 0
RHYTHM PHARMACEUTICALS INC COM 76243J105 6,585 305,000 SH   SOLE   305,000 0 0
RIGEL PHARMACEUTICALS INC COM NEW 766559603 7,854 4,200,000 SH   SOLE   4,200,000 0 0
RTI SURGICAL HOLDINGS INC COM 74975N105 5,558 1,950,000 SH   SOLE   1,950,000 0 0
SAGE THERAPEUTICS INC COM 78667J108 12,977 92,500 SH   SOLE   92,500 0 0
SAREPTA THERAPEUTICS INC COM 803607100 25,421 337,500 SH   SOLE   337,500 0 0
SEATTLE GENETICS INC COM 812578102 20,667 242,000 SH   SOLE   242,000 0 0
SPARK THERAPEUTICS INC COM 84652J103 49,011 505,371 SH   SOLE   505,371 0 0
SPERO THERAPEUTICS INC COM 84833T103 5,565 525,000 SH   SOLE   525,000 0 0
STRYKER CORP COM 863667101 38,718 179,000 SH   SOLE   179,000 0 0
TELEFLEX INC COM 879369106 44,168 130,000 SH   SOLE   130,000 0 0
THERAVANCE BIOPHARMA INC COM G8807B106 10,714 550,000 SH   SOLE   550,000 0 0
THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 1,376 1,500,000 PRN   SOLE   1,500,000 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 23,593 81,000 SH   SOLE   81,000 0 0
TRANSLATE BIO INC COM 89374L104 10,158 1,025,000 SH   SOLE   1,025,000 0 0
ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 26,010 608,000 SH   SOLE   608,000 0 0
UNIQURE NV SHS N90064101 7,656 194,500 SH   SOLE   194,500 0 0
UNITEDHEALTH GROUP INC COM 91324P102 128,436 591,000 SH   SOLE   591,000 0 0
VERTEX PHARMACEUTICALS INC COM 92532F100 34,392 203,000 SH   SOLE   203,000 0 0
WELLCARE HEALTH PLANS INC COM 94946T106 83,064 320,500 SH   SOLE   320,500 0 0
WEST PHARMACEUTICAL SVSC INC COM 955306105 21,628 152,500 SH   SOLE   152,500 0 0
ZAI LAB LTD ADR 98887Q104 18,601 575,000 SH   SOLE   575,000 0 0
ZOGENIX INC COM NEW 98978L204 10,010 250,000 SH   SOLE   250,000 0 0