683 Capital Management 13F-HR Quarterly holdings report by institutional manager

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
ACER THERAPEUTICS INC	COM	00444P108	471	19,367	SH		DFND		19,367	0	0
ADAMIS PHARMACEUTICALS CORP	COM NEW	00547W208	1,794	850,000	SH		DFND		850,000	0	0
ADECOAGRO S A	COM	L00849106	2,412	350,000	SH		DFND		350,000	0	0
ADIENT PLC	ORD SHS	G0084W101	6,960	537,000	SH		DFND		537,000	0	0
ADMA BIOLOGICS INC	COM	000899104	3,051	805,000	SH		DFND		805,000	0	0
ADVERUM BIOTECHNOLOGIES INC	COM	00773U108	1,899	362,386	SH		DFND		362,386	0	0
ALDEYRA THERAPEUTICS INC	COM	01438T106	16,254	1,800,000	SH		DFND		1,800,000	0	0
ALLEGRO MERGER CORP	*W EXP 01/06/202	01749N111	115	443,772	SH		DFND		443,772	0	0
ALNYLAM PHARMACEUTICALS INC	COM	02043Q107	30,465	326,000	SH		DFND		326,000	0	0
AMCI ACQUISITION CORP	*W EXP 05/20/202	00165R119	59	200,000	SH		DFND		200,000	0	0
APHRIA INC	COM	03765K104	1,398	150,000	SH		DFND		150,000	0	0
APHRIA INC	COM	03765K104	1,398	150,000	SH	Put	DFND		150,000	0	0
APPLIED GENETIC TECHNOL CORP	COM	03820J100	838	200,000	SH		DFND		200,000	0	0
APTEVO THERAPEUTICS INC	COM	03835L108	518	575,000	SH		DFND		575,000	0	0
ARDELYX INC	COM	039697107	2,902	1,036,404	SH		DFND		1,036,404	0	0
ARYA SCIENCES ACQUISITION CO	SHS CL A	G3165V109	9,830	1,000,000	SH		DFND		1,000,000	0	0
ARYA SCIENCES ACQUISITION CO	*W EXP 10/10/202	G3165V125	600	500,000	SH		DFND		500,000	0	0
AT&T INC	COM	00206R102	38	1,200	SH	Put	DFND		1,200	0	0
AZURRX BIOPHARMA INC	COM	05502L105	1,683	695,504	SH		DFND		695,504	0	0
BERKSHIRE HATHAWAY INC DEL	CL B NEW	084670702	5,022	25,000	SH	Put	DFND		25,000	0	0
BIG ROCK PARTNERS ACQUISI CO	RIGHT 12/01/2022	089482129	43	165,000	SH		DFND		165,000	0	0
BIG ROCK PARTNERS ACQUISI CO	*W EXP 12/01/202	089482111	15	82,500	SH		DFND		82,500	0	0
BIOCERES CROP SOLUTIONS CORP	*W EXP 07/01/202	G1117K106	54	200,000	SH		DFND		200,000	0	0
BISON CAP ACQUISITION CORP	RIGHT 03/20/2019	G1142P138	35	100,000	SH		DFND		100,000	0	0
BISON CAP ACQUISITION CORP	*W EXP 06/20/202	G1142P112	10	50,000	SH		DFND		50,000	0	0
BLACK RIDGE ACQUISITION CORP	RIGHT 07/10/2019	09216T123	70	200,000	SH		DFND		200,000	0	0
BLACK RIDGE ACQUISITION CORP	*W EXP 07/10/202	09216T115	210	700,000	SH		DFND		700,000	0	0
BLACKSTONE GROUP L P	COM UNIT LTD	09253U108	5,945	170,000	SH		DFND		170,000	0	0
BP PRUDHOE BAY RTY TR	UNIT BEN INT	055630107	1,697	63,800	SH	Put	DFND		63,800	0	0
BRIGHTHOUSE FINL INC	COM	10922N103	1,811	49,900	SH		DFND		49,900	0	0
CAPITAL ONE FINL CORP	COM	14040H105	20,096	246,000	SH		DFND		246,000	0	0
CAPITAL ONE FINL CORP	COM	14040H105	8,169	100,000	SH	Put	DFND		100,000	0	0
CAPITAL PRODUCT PARTNERS L P	PARTNERSHP UNITS	Y11082206	4	363	SH		DFND		363	0	0
CARVANA CO	CL A	146869102	114,088	1,965,000	SH		DFND		1,965,000	0	0
CHARDAN HEALTHCARE ACQUISITI	COM	15957A108	1,469	150,000	SH		DFND		150,000	0	0
CHARDAN HEALTHCARE ACQUISITI	*W EXP 12/13/202	15957A116	74	150,000	SH		DFND		150,000	0	0
CHASERG TECHNLGY ACQUISITN C	*W EXP 04/10/202	16166A111	49	75,000	SH		DFND		75,000	0	0
CHIMERIX INC	COM	16934W106	630	300,000	SH		DFND		300,000	0	0
CM SEVEN STAR ACQUISITION CO	RIGHT 08/21/2022	G2345N136	58	175,000	SH		DFND		175,000	0	0
CM SEVEN STAR ACQUISITION CO	*W EXP 08/21/202	G2345N110	0	87,500	SH		DFND		87,500	0	0
COCA COLA CO	COM	191216100	23,430	500,000	SH	Put	DFND		500,000	0	0
CONSTELLATION ALPHA CAP CORP	RIGHT 99/99/9999	G2379F132	23	180,000	SH		DFND		180,000	0	0
CONSTELLATION ALPHA CAP CORP	*W EXP 03/23/202	G2379F116	30	380,000	SH		DFND		380,000	0	0
CONTRAFECT CORP	COM	212326102	994	2,500,000	SH		DFND		2,500,000	0	0
CONTURA ENERGY INC	COM	21241B100	3,859	66,625	SH		DFND		66,625	0	0
COOPER STD HLDGS INC	COM	21676P103	1,174	25,000	SH		DFND		25,000	0	0
CRESUD S A C I F Y A	SPONSORED ADR	226406106	9,815	846,860	SH		DFND		846,860	0	0
DHT HOLDINGS INC	SHS NEW	Y2065G121	2,297	515,000	SH		DFND		515,000	0	0
DIAMOND S SHIPPING INC	COM	Y20676105	1,048	100,726	SH		DFND		100,726	0	0
DIANA SHIPPING INC	COM	Y2066G104	769	272,622	SH		DFND		272,622	0	0
EDTECHX HLDGS ACQUISITION CO	*W EXP 12/31/202	28138X111	24	125,000	SH		DFND		125,000	0	0
EIGER BIOPHARMACEUTICALS INC	COM	28249U105	22,515	1,610,529	SH		DFND		1,610,529	0	0
ELEVATE CREDIT INC	COM	28621V101	1,779	410,000	SH		DFND		410,000	0	0
ENERGY RECOVERY INC	COM	29270J100	9,603	1,100,000	SH		DFND		1,100,000	0	0
ENOVA INTL INC	COM	29357K103	14,091	617,498	SH		DFND		617,498	0	0
ESTRE AMBIENTAL INC	*W EXP 12/21/202	G3206V118	85	730,000	SH		DFND		730,000	0	0
FALCON MINERALS CORP	*W EXP 07/21/202	30607B208	124	149,600	SH		DFND		149,600	0	0
FATE THERAPEUTICS INC	COM	31189P102	6,940	395,000	SH		DFND		395,000	0	0
FENNEC PHARMACEUTICALS INC	COM	31447P100	4,711	971,351	SH		DFND		971,351	0	0
FERRARI N V	COM	N3167Y103	3,345	25,000	SH	Put	DFND		25,000	0	0
FORUM MERGER II CORP	*W EXP 09/30/202	34986F111	132	300,000	SH		DFND		300,000	0	0
GALMED PHARMACEUTICALS LTD	SHS	M47238106	11,030	1,350,000	SH		DFND		1,350,000	0	0
GENCO SHIPPING & TRADING LTD	SHS	Y2685T131	1,328	178,000	SH		DFND		178,000	0	0
GIGCAPITAL INC	RIGHT 03/06/2020	37518N114	130	200,000	SH		DFND		200,000	0	0
GIGCAPITAL INC	*W EXP 06/08/202	37518N122	43	150,000	SH		DFND		150,000	0	0
GLOBALSTAR INC	COM	378973408	6,928	16,110,778	SH		DFND		16,110,778	0	0
GORDON POINTE ACQUISITION CO	*W EXP 07/30/202	382788115	86	225,000	SH		DFND		225,000	0	0
GRAF INDL CORP	*W EXP 12/31/202	384278115	74	225,000	SH		DFND		225,000	0	0
GREENLAND ACQUISITIN CORPORA	RIGHT 04/27/2025	G40981113	47	150,000	SH		DFND		150,000	0	0
GREENLAND ACQUISITIN CORPORA	*W EXP 03/03/202	G40981105	15	150,000	SH		DFND		150,000	0	0
GREIF INC	CL B	397624206	582	11,910	SH		DFND		11,910	0	0
GRUPO FINANCIERO GALICIA S A	SPONSORED ADR	399909100	2,680	105,000	SH		DFND		105,000	0	0
HL ACQUISITIONS CORP	RIGHT 07/17/2023	G4603R130	52	180,000	SH		DFND		180,000	0	0
HL ACQUISITIONS CORP	*W EXP 06/21/202	G4603R122	45	180,000	SH		DFND		180,000	0	0
HOSTESS BRANDS INC	*W EXP 11/04/202	44109J114	3,276	2,520,000	SH		DFND		2,520,000	0	0
IFRESH INC	COM	449538107	35	30,000	SH		DFND		30,000	0	0
INSPIRED ENTMT INC	COM	45782N108	5,344	801,824	SH		DFND		801,824	0	0
INTEC PHARMA LTD JERUSALEM	SHS	M53644106	1,100	150,000	SH		DFND		150,000	0	0
INTERNATIONAL BUSINESS MACHS	COM	459200101	10,583	75,000	SH	Put	DFND		75,000	0	0
IRSA INVERSIONES Y REP S A	GLOBL DEP RCPT	450047204	9,752	894,724	SH		DFND		894,724	0	0
IRSA PROPIEDADES COMERCIALES	SPONSORED ADR	463588103	3,314	159,700	SH		DFND		159,700	0	0
ISHARES TR	IBOXX HI YD ETF	464288513	8,647	100,000	SH	Put	DFND		100,000	0	0
JOHNSON & JOHNSON	COM	478160104	55,916	400,000	SH	Put	DFND		400,000	0	0
KADMON HLDGS INC	COM	48283N106	884	334,900	SH		DFND		334,900	0	0
KROGER CO	COM	501044101	5,043	205,000	SH		DFND		205,000	0	0
KROGER CO	COM	501044101	9,840	400,000	SH	Call	DFND		400,000	0	0
LEAP THERAPEUTICS INC	COM	52187K101	281	150,142	SH		DFND		150,142	0	0
LEGACY ACQUISITION CORP	*W EXP 11/30/202	524643111	150	500,000	SH		DFND		500,000	0	0
LEISURE ACQUISITION CORP	*W EXP 12/05/201	52539T115	75	125,000	SH		DFND		125,000	0	0
LF CAP ACQUISITION CORP	*W EXP 06/22/202	50200K116	173	450,000	SH		DFND		450,000	0	0
M D C HLDGS INC	COM	552676108	8,718	300,000	SH	Put	DFND		300,000	0	0
MACROGENICS INC	COM	556099109	8,720	484,970	SH		DFND		484,970	0	0
MAGNOLIA OIL & GAS CORP	*W EXP 07/31/202	559663117	1,072	316,333	SH		DFND		316,333	0	0
MAIDEN HOLDINGS LTD	SHS	G5753U112	5,850	7,876,964	SH		DFND		7,876,964	0	0
MARINUS PHARMACEUTICALS INC	COM	56854Q101	5,852	1,400,000	SH		DFND		1,400,000	0	0
MARKER THERAPEUTICS INC	COM	57055L107	9,636	1,460,000	SH		DFND		1,460,000	0	0
MEDICINES CO	COM	584688105	4,675	167,252	SH		DFND		167,252	0	0
MEGALITH FINL ACQUISITION CO	*W EXP 08/26/202	58518F117	110	400,000	SH		DFND		400,000	0	0
MEIRAGTX HOLDINGS PLC	COM	G59665102	6,420	432,319	SH		DFND		432,319	0	0
MERCK & CO INC	COM	58933Y105	16,634	200,000	SH	Put	DFND		200,000	0	0
MICRON TECHNOLOGY INC	COM	595112103	14,879	360,000	SH		DFND		360,000	0	0
MIRAGEN THERAPEUTICS INC	COM	60463E103	4,927	1,766,038	SH		DFND		1,766,038	0	0
MODERN MEDIA ACQUISITION	RIGHT 99/99/9999	60765P129	330	1,000,000	SH		DFND		1,000,000	0	0
MODERN MEDIA ACQUISITION	*W EXP 05/17/202	60765P111	155	500,000	SH		DFND		500,000	0	0
MONDELEZ INTL INC	CL A	609207105	9,984	200,000	SH	Put	DFND		200,000	0	0
MONTAGE RES CORP	COM	61179L100	174	11,571	SH		DFND		11,571	0	0
MTECH ACQUISITION CORP	*W EXP 08/01/202	55378W115	48	75,000	SH		DFND		75,000	0	0
MUDRICK CAP ACQUISITION CORP	COM CLASS A	624745105	19,152	1,900,000	SH		DFND		1,900,000	0	0
MUDRICK CAP ACQUISITION CORP	*W EXP 02/12/202	624745113	1,375	2,500,000	SH		DFND		2,500,000	0	0
NATIONAL ENERGY SERVICES REU	*W EXP 05/05/202	G6375R115	827	725,000	SH		DFND		725,000	0	0
NATIONAL OILWELL VARCO INC	COM	637071101	3,463	130,000	SH		DFND		130,000	0	0
NAVIOS MARITIME CONTAINERS L	COM UNIT RP LP	Y62151108	4,917	2,057,185	SH		DFND		2,057,185	0	0
NAVIOS MARITIME HLDGS INC	COM	Y62197119	321	135,000	SH		DFND		135,000	0	0
NEW FRONTIER CORP	*W EXP 99/99/999	G6485P124	35	50,000	SH		DFND		50,000	0	0
NII HLDGS INC	COM PAR	62913F508	25,800	13,163,432	SH		DFND		13,163,432	0	0
NRC GROUP HLDGS CORP	*W EXP 10/17/202	629375114	484	537,500	SH		DFND		537,500	0	0
ON DECK CAP INC	COM	682163100	16,938	3,125,000	SH		DFND		3,125,000	0	0
ONCONOVA THERAPEUTICS INC	COM PAR	68232V405	3,191	966,877	SH		DFND		966,877	0	0
ONCOSEC MED INC	COM NEW	68234L207	167	300,000	SH		DFND		300,000	0	0
ONE MADISON CORP	*W EXP 99/99/999	G6772P126	146	125,000	SH		DFND		125,000	0	0
OPES ACQUISITION CORP	*W EXP 03/13/202	68373P118	37	150,000	SH		DFND		150,000	0	0
ORACLE CORP	COM	68389X105	10,742	200,000	SH	Put	DFND		200,000	0	0
OTONOMY INC	COM	68906L105	2,893	1,100,000	SH		DFND		1,100,000	0	0
PENSARE ACQUISITION CORP	RIGHT 99/99/9999	70957E121	175	605,000	SH		DFND		605,000	0	0
PENSARE ACQUISITION CORP	*W EXP 07/27/202	70957E113	23	115,000	SH		DFND		115,000	0	0
PG&E CORP	COM	69331C108	46,066	2,588,000	SH		DFND		2,588,000	0	0
PHUNWARE INC	*W EXP 12/26/202	71948P118	446	269,396	SH		DFND		269,396	0	0
PIERIS PHARMACEUTICALS INC	COM	720795103	503	150,257	SH		DFND		150,257	0	0
PROCTER AND GAMBLE CO	COM	742718109	10,405	100,000	SH	Put	DFND		100,000	0	0
REDHILL BIOPHARMA LTD	SPONSORED ADS	757468103	30,696	3,693,840	SH		DFND		3,693,840	0	0
SCHULTZE SPL PURP ACQUSTN CO	*W EXP 12/31/202	80821R117	101	300,000	SH		DFND		300,000	0	0
SCORPIO TANKERS INC	NOTE 3.000% 5/1	80918TAB5	1,748	2,000,000	PRN		DFND		2,000,000	0	0
SCORPIO TANKERS INC	SHS	Y7542C130	29,760	1,500,000	SH		DFND		1,500,000	0	0
SEADRILL LTD	COM	G7998G106	6,207	746,951	SH		DFND		746,951	0	0
SELECT SECTOR SPDR TR	SBI INT-UTILS	81369Y886	29,085	500,000	SH	Put	DFND		500,000	0	0
SELLAS LIFE SCIENCES GROUP I	COM	81642T100	1,301	1,275,000	SH		DFND		1,275,000	0	0
SEQUENTIAL BRNDS GROUP INC N	COM	81734P107	3,838	2,998,060	SH		DFND		2,998,060	0	0
SIERRA ONCOLOGY INC	COM	82640U107	3,956	2,313,159	SH		DFND		2,313,159	0	0
SOLENO THERAPEUTICS INC	COM NEW	834203200	1,172	569,087	SH		DFND		569,087	0	0
SPDR SERIES TRUST	S&P RETAIL ETF	78464A714	3,376	75,000	SH	Put	DFND		75,000	0	0
STRONGBRIDGE BIOPHARMA PLC	SHS USD	G85347105	4,227	848,700	SH		DFND		848,700	0	0
SYNDAX PHARMACEUTICALS INC	COM	87164F105	8,391	1,598,357	SH		DFND		1,598,357	0	0
SYNTHETIC BIOLOGICS INC	COM NEW	87164U201	29	42,858	SH		DFND		42,858	0	0
TEEKAY TANKERS LTD	CL A	Y8565N102	970	1,000,000	SH		DFND		1,000,000	0	0
TENZING ACQUISITION CORP	*W EXP 02/23/202	G8708A108	32	200,000	SH		DFND		200,000	0	0
TESLA INC	COM	88160R101	139,958	500,100	SH	Put	DFND		500,100	0	0
TETRAPHASE PHARMACEUTICALS I	COM	88165N105	1,126	840,000	SH		DFND		840,000	0	0
TG THERAPEUTICS INC	COM	88322Q108	4,221	525,000	SH		DFND		525,000	0	0
TIBERIUS ACQUISITION CORP	*W EXP 02/28/202	88633A115	198	450,000	SH		DFND		450,000	0	0
TKK SYMPHONY ACQUISITION COR	RIGHT 02/20/2020	G88950137	56	225,000	SH		DFND		225,000	0	0
TKK SYMPHONY ACQUISITION COR	*W EXP 02/20/202	G88950129	33	225,000	SH		DFND		225,000	0	0
TOCAGEN INC	COM	888846102	4,076	375,000	SH		DFND		375,000	0	0
TOTTENHAM ACQUISITION I LTD	RIGHT 06/05/2020	G8959N122	43	134,000	SH		DFND		134,000	0	0
TOTTENHAM ACQUISITION I LTD	*W EXP 05/06/202	G8959N114	87	542,000	SH		DFND		542,000	0	0
TRACON PHARMACEUTICALS INC	COM	89237H100	3,752	2,738,938	SH		DFND		2,738,938	0	0
TRIDENT ACQUISITIONS CORP	*W EXP 05/09/202	89615T114	319	1,993,750	SH		DFND		1,993,750	0	0
TRINITY MERGER CORP	*W EXP 05/11/202	89653L114	252	700,000	SH		DFND		700,000	0	0
TRIVAGO N V	SPON ADS A SHS	89686D105	14,910	3,451,402	SH		DFND		3,451,402	0	0
TRUECAR INC	COM	89785L107	14,317	2,156,191	SH		DFND		2,156,191	0	0
TWELVE SEAS INVESTMENT COMPA	RIGHT 12/22/2019	G9145A131	47	175,000	SH		DFND		175,000	0	0
TWELVE SEAS INVESTMENT COMPA	*W EXP 12/22/202	G9145A115	151	581,850	SH		DFND		581,850	0	0
U S WELL SVCS INC	CL A	91274U101	223	28,000	SH		DFND		28,000	0	0
UNIQURE NV	SHS	N90064101	44,738	750,000	SH		DFND		750,000	0	0
VECTOIQ ACQUISITION CORP	*W EXP 05/11/202	92243N111	215	500,000	SH		DFND		500,000	0	0
WARRIOR MET COAL INC	COM	93627C101	7,448	245,000	SH		DFND		245,000	0	0
ZAFGEN INC	COM	98885E103	3,658	1,335,104	SH		DFND		1,335,104	0	0
ZILLOW GROUP INC	CL A	98954M101	1,710	50,000	SH		DFND		50,000	0	0
ZIOPHARM ONCOLOGY INC	COM	98973P101	770	200,000	SH		DFND		200,000	0	0
ZOGENIX INC	COM NEW	98978L204	2,751	50,000	SH		DFND		50,000	0	0