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
AFYA LTD-CLASS A CL A COM G01125106 1,044 40,713 SH   SOLE   0 0 40,713
AGNICO EAGLE MIN COM 008474108 359 6,690 SH   SOLE   0 0 6,690
ALCOA CORP COM 013872106 358 17,817 SH   SOLE   0 0 17,817
ALCOA CORP COM 013872106 100 50 SH Call SOLE   0 0 50
ALEXION PHARM COM 015351109 523 5,345 SH   SOLE   0 0 5,345
ALLERGAN PLC SHS G0177J109 777 4,616 SH   SOLE   0 0 4,616
ALPHABET INC-A CAP STK CL A 02079K305 1,587 1,300 SH   SOLE   0 0 1,300
ALPHABET INC-C CAP STK CL C 02079K107 1,543 1,266 SH   SOLE   0 0 1,266
AMARIN CORP -ADR SPONS ADR NEW 023111206 1,854 122,274 SH   SOLE   0 0 122,274
AMARIN CORP -ADR SPONS ADR NEW 023111206 76 50 SH Call SOLE   0 0 50
AMERICAN AIRLINE COM 02376R102 405 15,000 SH   SOLE   0 0 15,000
AMGEN INC COM 031162100 2,329 12,038 SH   SOLE   0 0 12,038
AMICUS THERAPEUT COM 03152W109 155 19,300 SH   SOLE   0 0 19,300
APPLE INC COM 037833100 672 30 SH Put SOLE   0 0 30
APPLIED MATERIAL COM 038222105 2,006 40,201 SH   SOLE   0 0 40,201
APTIV PLC SHS G6095L109 175 2,005 SH   SOLE   0 0 2,005
ARCHER-DANIELS COM 039483102 1,422 34,612 SH   SOLE   0 0 34,612
ASML HOLDING-NY N Y REGISTRY SHS N07059201 252 1,013 SH   SOLE   0 0 1,013
ASML HOLDING-NY N Y REGISTRY SHS N07059201 497 20 SH Call SOLE   0 0 20
ATHENEX INC COM 04685N103 280 23,000 SH   SOLE   0 0 23,000
AZUL SA SPONSR ADR PFD 05501U106 802 22,386 SH   SOLE   0 0 22,386
BAIDU INC-A SPON ADR REP A 056752108 154 1,500 SH   SOLE   0 0 1,500
BAIDU INC-SP ADR SPON ADR REP A 056752108 103 10 SH Call SOLE   0 0 10
BANK OF AMERICA COM 060505104 1,961 67,216 SH   SOLE   0 0 67,216
BANK OF AMERICA COM 060505104 292 100 SH Call SOLE   0 0 100
BARRICK GOLD CRP COM 067901108 244 14,100 SH   SOLE   0 0 14,100
BEIGENE LTD SPONSORED ADR 07725L102 451 6,000 SH   SOLE   0 0 6,000
BERKSHIRE HATH-A CL A 084670108 5,613 18 SH   SOLE   0 0 18
BERKSHIRE HATH-B CL B NEW 084670702 762 3,665 SH   SOLE   0 0 3,665
BERKSHIRE HATH-B CL B NEW 084670702 2,704 130 SH Put SOLE   0 0 130
BLUEBIRD BIO INC COM 09609G100 762 8,300 SH   SOLE   0 0 8,300
BLUEBIRD BIO INC COM 09609G100 184 20 SH Call SOLE   0 0 20
BOEING CO/THE COM 097023105 3,576 9,400 SH   SOLE   0 0 9,400
BRADESCO SA-PREF SP ADR PFD NEW 059460303 3,279 96,669 SH   SOLE   0 0 96,669
BRIDGEBIO PHARMA COM 10806X102 279 13,000 SH   SOLE   0 0 13,000
BROADCOM INC COM 11135F101 3,054 11,061 SH   SOLE   0 0 11,061
BROADCOM INC COM 11135F101 2,485 90 SH Call SOLE   0 0 90
BUNGE LTD COM G16962105 4,517 79,786 SH   SOLE   0 0 79,786
BUNGE LTD COM G16962105 1,404 248 SH Call SOLE   0 0 248
CARDINAL HEALTH COM 14149Y108 535 11,331 SH   SOLE   0 0 11,331
CF INDUSTRIES HO COM 125269100 246 5,000 SH   SOLE   0 0 5,000
CIGNA CORP COM 125523100 395 2,600 SH   SOLE   0 0 2,600
CIGNA CORP COM 125523100 607 40 SH Call SOLE   0 0 40
CLEVELAND-CLIFFS COM NEW 185899101 2,867 397,039 SH   SOLE   0 0 397,039
CLEVELAND-CLIFFS COM NEW 185899101 217 300 SH Call SOLE   0 0 300
COMMSCOPE HOLDIN COM 20337X109 1,977 168,101 SH   SOLE   0 0 168,101
COMMSCOPE HOLDIN COM 20337X109 589 501 SH Call SOLE   0 0 501
CORNING INC COM 219350105 3,225 113,069 SH   SOLE   0 0 113,069
CORTEVA INC COM 22052L104 2,827 100,981 SH   SOLE   0 0 100,981
CVS HEALTH CORP COM 126650100 662 10,500 SH   SOLE   0 0 10,500
DECKERS OUTDOOR COM 243537107 295 2,000 SH   SOLE   0 0 2,000
DELTA AIR LI COM NEW 247361702 576 10,000 SH   SOLE   0 0 10,000
ENCANA CORP COM 292505104 1,125 244,656 SH   SOLE   0 0 244,656
EOG RESOURCES COM 26875P101 260 3,500 SH   SOLE   0 0 3,500
EOG RESOURCES COM 26875P101 1,262 170 SH Call SOLE   0 0 170
ERICSSON LM-B ADR B SEK 10 294821608 35,168 447,095 SH   SOLE   0 0 447,095
ETFMG PRIME CYBE PRIME CYBR SCRTY 26924G201 476 12,740 SH   SOLE   0 0 12,740
FIRST SOLAR INC COM 336433107 777 13,400 SH   SOLE   0 0 13,400
GERDAU S A SPON ADR REP PFD 373737105 3,139 996,600 SH   SOLE   0 0 996,600
GLOBAL X SILVER GLOBAL X SILVER 37954Y848 365 13,000 SH   SOLE   0 0 13,000
HUMANA INC COM 444859102 511 20 SH Call SOLE   0 0 20
IBM COM 459200101 796 5,472 SH   SOLE   0 0 5,472
ICICI BANK LTD ADR B SEK 10 45104G104 34,696 80,000 SH   SOLE   0 0 80,000
INTEL CORP COM 458140100 515 10,000 SH   SOLE   0 0 10,000
INVESCO CURRENCY CDN DLR SHS 46138T104 2,235 300 SH Put SOLE   0 0 300
INVESCO CURRENCY BRIT POUN STRL 46138M109 1,193 100 SH Call SOLE   0 0 100
INVESCO DB AGRIC AGRICULTURE FD 46140H106 1,649 104,000 SH   SOLE   0 0 104,000
INVESCO QQQ TRUS UNIT SER 1 46090E103 1,133 60 SH Put SOLE   0 0 60
INVESCO SENIOR L SR LN ETF 46138G508 904 400 SH Put SOLE   0 0 400
INVESCO SOLAR ET SOLAR ETF 46138G706 1,584 53,927 SH   SOLE   0 0 53,927
INVESCO SOLAR ET SOLAR ETF 46138G706 206 70 SH Call SOLE   0 0 70
IPATH BLOOMBERG DJUBS CMDT ETN36 06738C778 719 33,000 SH   SOLE   0 0 33,000
ISHARES 20PLUS YEAR 20 YR TR BD ETF 464287432 3,505 245 SH Call SOLE   0 0 245
ISHARES CHINA LA CHINA LG-CAP ETF 464287184 2,649 66,565 SH   SOLE   0 0 66,565
ISHARES CHINA LA CHINA LG-CAP ETF 464287184 2,746 690 SH Call SOLE   0 0 690
ISHARES IBOXX HI IBOXX HI YD ETF 464288513 4,533 520 SH Put SOLE   0 0 520
ISHARES IBOXX IN IBOXX INV CP ETF 464287242 1,810 142 SH Put SOLE   0 0 142
ISHARES MSCI BRA MSCI BRAZIL ETF 464286400 4,529 107,500 SH   SOLE   0 0 107,500
ISHARES MSCI CAN MSCI CDA ETF 464286509 578 200 SH Put SOLE   0 0 200
ISHARES MSCI EAF MSCI EAFE ETF 464287465 347 5,317 SH   SOLE   0 0 5,317
ISHARES MSCI EME MSCI EMG MKT ETF 464287234 4,695 114,872 SH   SOLE   0 0 114,872
ISHARES MSCI EME MSCI EMG MKT ETF 464287234 817 200 SH Call SOLE   0 0 200
ISHARES MSCI EUR MSCI EUROZONE ETF 464286608 1,167 300 SH Call SOLE   0 0 300
ISHARES MSCI GER MSCI GERMANY ETF 464286806 807 300 SH Call SOLE   0 0 300
ISHARES MSCI ITA MSCI ITALY ETF 46434G830 2,164 785 SH Put SOLE   0 0 785
ISHARES MSCI SOU MSCI STH KOR ETF 464286772 3,015 53,515 SH   SOLE   0 0 53,515
ISHARES NASDAQ B NASDAQ BIOTECH 464287556 2,348 23,602 SH   SOLE   0 0 23,602
ISHARES NASDAQ B NASDAQ BIOTECH 464287556 398 40 SH Call SOLE   0 0 40
ISHARES PHLX SEM PHLX SEMICND ETF 464287523 1,903 90 SH Put SOLE   0 0 90
ISHARES RUSSELL RUSSELL 2000 ETF 464287655 25,561 1,689 SH Put SOLE   0 0 1,689
ITAU UNIBANCO HLDG SA SPON ADR REP PFD 465562106 5,500 157,005 SH   SOLE   0 0 157,005
JETBLUE AIRWAYS COM 477143101 2,342 139,800 SH   SOLE   0 0 139,800
JPMORGAN CHASE COM 46625H100 328 2,791 SH   SOLE   0 0 2,791
KEYCORP COM 493267108 1,552 87,000 SH   SOLE   0 0 87,000
LAM RESEARCH COM 512807108 71 308 SH   SOLE   0 0 308
MARTIN MAR MTLS COM 573284106 552 2,015 SH   SOLE   0 0 2,015
MASTERCARD INC-A CL A 57636Q104 1,086 40 SH Put SOLE   0 0 40
MICRON TECH COM 595112103 1,157 27,000 SH   SOLE   0 0 27,000
MICROSOFT CORP COM 594918104 9,439 67,890 SH   SOLE   0 0 67,890
MICROSOFT CORP COM 594918104 1,668 120 SH Put SOLE   0 0 120
MORGAN STANLEY COM NEW 617446448 2,258 52,913 SH   SOLE   0 0 52,913
MOSAIC CO/THE COM 61945C103 3,426 167,141 SH   SOLE   0 0 167,141
MOSAIC CO/THE COM 61945C103 205 100 SH Call SOLE   0 0 100
NEW FRONTIER C-A COM CL A G6485P108 680 66,768 SH   SOLE   0 0 66,768
NOBLE ENERGY INC COM 655044105 337 150 SH Call SOLE   0 0 150
NOKIA CORP SPONSORED ADR 654902204 2,682 530,010 SH   SOLE   0 0 530,010
NORTHROP GRUMMAN COM 666807102 95 254 SH   SOLE   0 0 254
NVIDIA CORP COM 67066G104 679 3,902 SH   SOLE   0 0 3,902
NXP SEMICONDUCTO COM N6596X109 1,965 18,007 SH   SOLE   0 0 18,007
PALO ALTO NETWOR COM 697435105 1,624 7,966 SH   SOLE   0 0 7,966
PROCTER & GAMBLE COM 742718109 622 5,000 SH   SOLE   0 0 5,000
PROCTER & GAMBLE COM 742718109 1,244 100 SH Put SOLE   0 0 100
QUALCOMM INC COM 747525103 765 10,033 SH   SOLE   0 0 10,033
QUALCOMM INC COM 747525103 839 110 SH Call SOLE   0 0 110
RAYTHEON CO COM NEW 755111507 196 1,000 SH   SOLE   0 0 1,000
REATA PHARMACE-A CL A 75615P103 734 9,138 SH   SOLE   0 0 9,138
REGIONS FINANCIA COM 7591EP100 1,107 70,000 SH   SOLE   0 0 70,000
REGIONS FINANCIA COM 7591EP100 158 100 SH Call SOLE   0 0 100
SABESP SPONSORED ADR 20441A102 1,339 27,000 SH   SOLE   0 0 27,000
SAREPTA THERAPEU COM 803607100 151 2,000 SH   SOLE   0 0 2,000
SCIENCE APPLICAT COM 808625107 524 6,000 SH   SOLE   0 0 6,000
SKYWORKS SOLUTIO COM 83088M102 159 2,000 SH   SOLE   0 0 2,000
SOUTHWEST AIR COM 844741108 1,080 20,000 SH   SOLE   0 0 20,000
SOUTHWEST AIR COM 844741108 38 7 SH Put SOLE   0 0 7
SPDR S&P 500 ETF TR UNIT 78462F103 95,115 3,205 SH Put SOLE   0 0 3,205
SPDR S&P BIOTECH S&P BIOTECH 78464A870 2,326 30,511 SH   SOLE   0 0 30,511
SPDR S&P MET & M S&P METALS MNG 78464A755 255 10,000 SH   SOLE   0 0 10,000
SPDR S&P REG BAN S&P REGL BKG 78464A698 753 14,264 SH   SOLE   0 0 14,264
SPDR-HEALTH CARE SBI HEALTHCARE 81369Y209 631 70 SH Call SOLE   0 0 70
SPDR-HEALTH CARE SBI HEALTHCARE 81369Y209 270 30 SH Call SOLE   0 0 30
STEEL DYNAMICS COM 858119100 298 100 SH Call SOLE   0 0 100
TURNING POINT TH COM 90041T108 213 5,675 SH   SOLE   0 0 5,675
TWIST BIOSCIENCE COM 90184D100 1,327 55,568 SH   SOLE   0 0 55,568
UNITED AIRLINES COM 910047109 530 6,000 SH   SOLE   0 0 6,000
UNITED TECH CORP COM 913017109 1,365 10,000 SH   SOLE   0 0 10,000
UNITEDHEALTH GRP COM 91324P102 180 826 SH   SOLE   0 0 826
UNITEDHEALTH GRP COM 91324P102 761 35 SH Call SOLE   0 0 35
VALE SA SPONSORED ADS 91912E105 9,661 202,328 SH   SOLE   0 0 202,328
VANECK GOLD MNRS GOLD MINERS ETF 92189F106 534 20,000 SH   SOLE   0 0 20,000
VANECK GOLD MNRS GOLD MINERS ETF 92189F106 775 290 SH Call SOLE   0 0 290
VANECK JR GLD MN JR GOLD MINERS E 92189F791 2,774 76,500 SH   SOLE   0 0 76,500
VANECK JR GLD MN JR GOLD MINERS E 92189F791 2,723 751 SH Call SOLE   0 0 751
VANECK VIETNAM VIETNAM ETF 92189F817 2,236 137,076 SH   SOLE   0 0 137,076
VANGUARD FTSE ET FTSE DEV MKT ETF 921943858 669 16,285 SH   SOLE   0 0 16,285
VANGUARD HI DV Y HIGH DIV YLD 921946406 7,832 88,264 SH   SOLE   0 0 88,264
VANGUARD INT HDV INTL HIGH ETF 921946794 2,549 42,928 SH   SOLE   0 0 42,928
VANGUARD S&P 500 S&P 500 ETF SHS 922908363 1,048 3,844 SH   SOLE   0 0 3,844
VANGUARD S/C V E SM CAP VAL ETF 922908611 388 3,008 SH   SOLE   0 0 3,008
VANGUARD TL SK E TOTAL STK MKT 922908769 2,514 16,652 SH   SOLE   0 0 16,652
WALT DISNEY CO COM DISNEY 254687106 261 2,000 SH   SOLE   0 0 2,000
XTRACKERS HARVES XTRACK HRVST CSI 233051879 4,283 158,100 SH   SOLE   0 0 158,100
XTRACKERS HARVES XTRACK HRVST CSI 233051879 1,769 653 SH Call SOLE   0 0 653