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 5,528 72,500 SH   SOLE   72,500 0 0
ACADIA HEALTHCARE COMPANY IN COM 00404A109 32,390 975,000 SH   SOLE   975,000 0 0
ACADIA PHARMACEUTICALS INC COM 004225108 28,663 670,000 SH   SOLE   670,000 0 0
ACHILLION PHARMACEUTICALS IN COM 00448Q201 22,221 3,685,000 SH   SOLE   3,685,000 0 0
ACLARIS THERAPEUTICS INC COM 00461U105 3,024 1,600,000 SH   SOLE   1,600,000 0 0
ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 960 800,000 SH   SOLE   800,000 0 0
ADAPTIVE BIOTECHNOLOGIES COR COM 00650F109 16,306 545,000 SH   SOLE   545,000 0 0
AEGLEA BIOTHERAPEUTICS INC COM 00773J103 6,112 800,000 SH   SOLE   800,000 0 0
AGIOS PHARMACEUTICALS INC COM 00847X104 30,632 641,500 SH   SOLE   641,500 0 0
AKERO THERAPEUTICS INC COM 00973Y108 4,994 225,000 SH   SOLE   225,000 0 0
ALIGN TECHNOLOGY INC COM 016255101 30,946 110,900 SH   SOLE   110,900 0 0
ALLAKOS INC COM 01671P100 22,410 235,000 SH   SOLE   235,000 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 41,922 364,000 SH   SOLE   364,000 0 0
AMARIN CORP PLC SPONS ADR NEW 023111206 99,696 4,650,000 SH   SOLE   4,650,000 0 0
AMGEN INC COM 031162100 30,375 126,000 SH   SOLE   126,000 0 0
AMICUS THERAPEUTICS INC COM 03152W109 9,740 1,000,000 SH   SOLE   1,000,000 0 0
ANAPTYSBIO INC COM 032724106 2,194 135,000 SH   SOLE   135,000 0 0
APPLIED THERAPEUTICS INC COM 03828A101 554 20,315 SH   SOLE   20,315 0 0
APREA THERAPEUTICS INC COM 03836J102 33,224 723,991 SH   SOLE   723,991 0 0
ARDELYX INC COM 039697107 36,399 4,850,000 SH   SOLE   4,850,000 0 0
ARGENX SE SPONSORED ADR 04016X101 39,729 247,500 SH   SOLE   247,500 0 0
ARVINAS INC COM 04335A105 10,273 250,000 SH   SOLE   250,000 0 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 29,702 213,500 SH   SOLE   213,500 0 0
ASSEMBLY BIOSCIENCES INC COM 045396108 30,690 1,500,000 SH   SOLE   1,500,000 0 0
AUDENTES THERAPEUTICS INC COM 05070R104 24,534 410,000 SH   SOLE   410,000 0 0
AXONICS MODULATION TECH INC COM 05465P101 30,481 1,100,000 SH   SOLE   1,100,000 0 0
BAXTER INTL INC COM 071813109 43,901 525,000 SH   SOLE   525,000 0 0
BEIGENE LTD SPONSORED ADR 07725L102 35,605 214,800 SH   SOLE   214,800 0 0
BIOHAVEN PHARMACTL HLDG CO L COM G11196105 10,888 200,000 SH   SOLE   200,000 0 0
BIOMARIN PHARMACEUTICAL INC COM 09061G101 28,536 337,500 SH   SOLE   337,500 0 0
BLUEBIRD BIO INC COM 09609G100 3,071 35,000 SH   SOLE   35,000 0 0
BLUEPRINT MEDICINES CORP COM 09627Y109 30,602 382,000 SH   SOLE   382,000 0 0
BOSTON SCIENTIFIC CORP COM 101137107 54,264 1,200,000 SH   SOLE   1,200,000 0 0
BRISTOL MYERS SQUIBB CO COM 110122108 9,629 150,000 SH   SOLE   150,000 0 0
BRISTOL MYERS SQUIBB CO RIGHT 99/99/9999 110122157 557 185,150 SH   SOLE   185,150 0 0
CENTENE CORP DEL COM 15135B101 14,448 229,800 SH   SOLE   229,800 0 0
CHIASMA INC COM 16706W102 5,754 1,160,000 SH   SOLE   1,160,000 0 0
CIGNA CORP NEW COM 125523100 15,337 75,000 SH   SOLE   75,000 0 0
COHERUS BIOSCIENCES INC COM 19249H103 35,110 1,950,000 SH   SOLE   1,950,000 0 0
COLLEGIUM PHARMACEUTICAL INC COM 19459J104 32,414 1,575,000 SH   SOLE   1,575,000 0 0
COMPUGEN LTD ORD M25722105 6,556 1,100,000 SH   SOLE   1,100,000 0 0
CONSTELLATION PHARMCETICLS I COM 210373106 11,000 233,500 SH   SOLE   233,500 0 0
CORVUS PHARMACEUTICALS INC COM 221015100 816 150,000 SH   SOLE   150,000 0 0
COVETRUS INC COM 22304C100 273 20,683 SH   SOLE   20,683 0 0
DECIPHERA PHARMACEUTICALS IN COM 24344T101 26,258 421,890 SH   SOLE   421,890 0 0
DERMIRA INC COM 24983L104 9,854 650,000 SH   SOLE   650,000 0 0
DERMIRA INC NOTE 3.000% 5/1 24983LAB0 925 1,000,000 PRN   SOLE   1,000,000 0 0
DYNAVAX TECHNOLOGIES CORP COM NEW 268158201 9,009 1,575,000 SH   SOLE   1,575,000 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 42,809 183,500 SH   SOLE   183,500 0 0
ENCOMPASS HEALTH CORP COM 29261A100 56,455 815,000 SH   SOLE   815,000 0 0
EPIZYME INC COM 29428V104 50,430 2,050,000 SH   SOLE   2,050,000 0 0
EXACT SCIENCES CORP COM 30063P105 38,842 420,000 SH   SOLE   420,000 0 0
FIBROGEN INC COM 31572Q808 13,124 306,000 SH   SOLE   306,000 0 0
FIVE PRIME THERAPEUTICS INC COM 33830X104 1,836 400,000 SH   SOLE   400,000 0 0
FORTY SEVEN INC COM 34983P104 17,717 450,000 SH   SOLE   450,000 0 0
FRESHPET INC COM 358039105 20,992 355,250 SH   SOLE   355,250 0 0
GALAPAGOS NV SPON ADR 36315X101 36,195 175,000 SH   SOLE   175,000 0 0
GALERA THERAPEUTICS INC COM 36338D108 6,580 500,000 SH   SOLE   500,000 0 0
GAMIDA CELL LTD SHS M47364100 4,300 1,000,000 SH   SOLE   1,000,000 0 0
GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 21,065 265,000 SH   SOLE   265,000 0 0
GLOBAL CORD BLOOD CORPORATIO SHS G39342103 4,625 925,000 SH   SOLE   925,000 0 0
GUARDANT HEALTH INC COM 40131M109 14,847 190,000 SH   SOLE   190,000 0 0
HCA HEALTHCARE INC COM 40412C101 69,101 467,500 SH   SOLE   467,500 0 0
HEALTH CATALYST INC COM 42225T107 5,552 160,000 SH   SOLE   160,000 0 0
HEALTHEQUITY INC COM 42226A107 15,184 205,000 SH   SOLE   205,000 0 0
HOMOLOGY MEDICINES INC COM 438083107 8,798 425,000 SH   SOLE   425,000 0 0
HUMANA INC COM 444859102 67,806 185,000 SH   SOLE   185,000 0 0
IDEXX LABS INC COM 45168D104 31,388 120,200 SH   SOLE   120,200 0 0
IMMUNOMEDICS INC COM 452907108 21,160 1,000,000 SH   SOLE   1,000,000 0 0
INCYTE CORP COM 45337C102 21,830 250,000 SH   SOLE   250,000 0 0
INSMED INC COM PAR $.01 457669307 19,104 800,000 SH   SOLE   800,000 0 0
INSMED INC NOTE 1.750% 1/1 457669AA7 5,795 6,000,000 PRN   SOLE   6,000,000 0 0
INSULET CORP COM 45784P101 44,598 260,500 SH   SOLE   260,500 0 0
INTERCEPT PHARMACEUTICALS IN COM 45845P108 6,741 54,400 SH   SOLE   54,400 0 0
INTERSECT ENT INC COM 46071F103 19,920 800,000 SH   SOLE   800,000 0 0
INTUITIVE SURGICAL INC COM NEW 46120E602 90,150 152,500 SH   SOLE   152,500 0 0
INVITAE CORP COM 46185L103 19,356 1,200,000 SH   SOLE   1,200,000 0 0
IRHYTHM TECHNOLOGIES INC COM 450056106 42,488 624,000 SH   SOLE   624,000 0 0
JOHNSON & JOHNSON COM 478160104 81,323 557,500 SH   SOLE   557,500 0 0
KARUNA THERAPEUTICS INC COM 48576A100 13,561 180,000 SH   SOLE   180,000 0 0
MACROGENICS INC COM 556099109 2,502 230,000 SH   SOLE   230,000 0 0
MADRIGAL PHARMACEUTICALS INC COM 558868105 22,796 250,200 SH   SOLE   250,200 0 0
MEDICINES CO COM 584688105 26,136 307,699 SH   SOLE   307,699 0 0
MEDICINES CO NOTE 2.750% 7/1 584688AG0 8,735 5,000,000 PRN   SOLE   5,000,000 0 0
MERSANA THERAPEUTICS INC COM 59045L106 7,065 1,233,000 SH   SOLE   1,233,000 0 0
MIRATI THERAPEUTICS INC COM 60468T105 38,658 300,000 SH   SOLE   300,000 0 0
MIRUM PHARMACEUTICALS INC COM 604749101 30,527 1,245,000 SH   SOLE   1,245,000 0 0
MOMENTA PHARMACEUTICALS INC COM 60877T100 7,892 400,000 SH   SOLE   400,000 0 0
MYOKARDIA INC COM 62857M105 11,662 160,000 SH   SOLE   160,000 0 0
MYOVANT SCIENCES LTD COM G637AM102 7,760 500,000 SH   SOLE   500,000 0 0
NABRIVA THERAPEUTICS PLC SHS G63637105 2,772 2,100,000 SH   SOLE   2,100,000 0 0
NEUROCRINE BIOSCIENCES INC COM 64125C109 137,372 1,278,000 SH   SOLE   1,278,000 0 0
NEUROCRINE BIOSCIENCES INC NOTE 2.250% 5/1 64125CAD1 1,536 1,000,000 PRN   SOLE   1,000,000 0 0
NEVRO CORP COM 64157F103 32,794 279,000 SH   SOLE   279,000 0 0
NGM BIOPHARMACEUTICALS INC COM 62921N105 6,492 351,100 SH   SOLE   351,100 0 0
NOVOCURE LTD ORD SHS G6674U108 14,537 172,500 SH   SOLE   172,500 0 0
OBSEVA SA COM H5861P103 3,016 789,480 SH   SOLE   789,480 0 0
ODONATE THERAPEUTICS INC COM 676079106 13,954 430,000 SH   SOLE   430,000 0 0
ONESPAWORLD HOLDINGS LIMITED COM P73684113 15,156 900,000 SH   SOLE   900,000 0 0
PACIRA BIOSCIENCES COM 695127100 52,095 1,150,000 SH   SOLE   1,150,000 0 0
PACIRA BIOSCIENCES NOTE 2.375% 4/0 695127AD2 1,042 1,000,000 PRN   SOLE   1,000,000 0 0
PARATEK PHARMACEUTICALS INC COM 699374302 1,511 375,000 SH   SOLE   375,000 0 0
PENUMBRA INC COM 70975L107 39,835 242,500 SH   SOLE   242,500 0 0
PFIZER INC COM 717081103 407 10,400 SH   SOLE   10,400 0 0
PHASEBIO PHARMACEUTICALS INC COM 717224109 6,874 1,125,000 SH   SOLE   1,125,000 0 0
PHREESIA INC COM 71944F106 15,052 565,000 SH   SOLE   565,000 0 0
PORTOLA PHARMACEUTICALS INC COM 737010108 21,492 900,000 SH   SOLE   900,000 0 0
RA PHARMACEUTICALS INC COM 74933V108 35,198 750,000 SH   SOLE   750,000 0 0
RADIUS HEALTH INC COM NEW 750469207 20,164 1,000,200 SH   SOLE   1,000,200 0 0
RADIUS HEALTH INC NOTE 3.000% 9/0 750469AA6 1,274 1,500,000 PRN   SOLE   1,500,000 0 0
RETROPHIN INC COM 761299106 8,165 575,000 SH   SOLE   575,000 0 0
RHYTHM PHARMACEUTICALS INC COM 76243J105 7,921 345,000 SH   SOLE   345,000 0 0
RIGEL PHARMACEUTICALS INC COM NEW 766559603 11,766 5,497,900 SH   SOLE   5,497,900 0 0
RTI SURGICAL HOLDINGS INC COM 74975N105 5,343 1,950,000 SH   SOLE   1,950,000 0 0
SAREPTA THERAPEUTICS INC COM 803607100 44,583 345,500 SH   SOLE   345,500 0 0
SEATTLE GENETICS INC COM 812578102 27,651 242,000 SH   SOLE   242,000 0 0
SPERO THERAPEUTICS INC COM 84833T103 5,048 525,000 SH   SOLE   525,000 0 0
TELEFLEX INC COM 879369106 48,937 130,000 SH   SOLE   130,000 0 0
THERAVANCE BIOPHARMA INC COM G8807B106 16,963 655,200 SH   SOLE   655,200 0 0
THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 1,557 1,500,000 PRN   SOLE   1,500,000 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 26,314 81,000 SH   SOLE   81,000 0 0
TRANSLATE BIO INC COM 89374L104 7,733 950,000 SH   SOLE   950,000 0 0
ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 29,897 700,000 SH   SOLE   700,000 0 0
UNIQURE NV SHS N90064101 28,664 400,000 SH   SOLE   400,000 0 0
UNITEDHEALTH GROUP INC COM 91324P102 173,742 591,000 SH   SOLE   591,000 0 0
VERTEX PHARMACEUTICALS INC COM 92532F100 44,447 203,000 SH   SOLE   203,000 0 0
WELLCARE HEALTH PLANS INC COM 94946T106 105,832 320,500 SH   SOLE   320,500 0 0
WEST PHARMACEUTICAL SVSC INC COM 955306105 22,925 152,500 SH   SOLE   152,500 0 0
ZAI LAB LTD ADR 98887Q104 25,994 625,000 SH   SOLE   625,000 0 0
ZOGENIX INC COM NEW 98978L204 13,033 250,000 SH   SOLE   250,000 0 0