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

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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
3M CO	COM	88579Y101	16,440	100,000	SH	Put	DFND		100,000	0	0
ADAMIS PHARMACEUTICALS CORP	COM NEW	00547W208	1,366	1,938,825	SH		DFND		1,938,825	0	0
ADECOAGRO S A	COM	L00849106	1,749	300,000	SH		DFND		300,000	0	0
ADIENT PLC	ORD SHS	G0084W101	18,643	812,000	SH		DFND		812,000	0	0
ADMA BIOLOGICS INC	COM	000899104	6,338	1,424,378	SH		DFND		1,424,378	0	0
AFFIMED N V	COM	N01045108	1,249	425,000	SH		DFND		425,000	0	0
AGILE THERAPEUTICS INC	COM	00847L100	444	375,000	SH		DFND		375,000	0	0
AKAZOO SA	SHS	L0164E108	633	100,000	SH		DFND		100,000	0	0
AKAZOO SA	*W EXP 09/11/202	L0164E116	385	500,000	SH		DFND		500,000	0	0
AKERNA CORP	*W EXP 06/17/202	00973W110	55	75,000	SH		DFND		75,000	0	0
ALDEYRA THERAPEUTICS INC	COM	01438T106	12,384	2,350,000	SH		DFND		2,350,000	0	0
ALLEGRO MERGER CORP	*W EXP 01/06/202	01749N111	102	443,772	SH		DFND		443,772	0	0
ALNYLAM PHARMACEUTICALS INC	COM	02043Q107	28,469	354,000	SH		DFND		354,000	0	0
AMCI ACQUISITION CORP	*W EXP 05/20/202	00165R119	70	200,000	SH		DFND		200,000	0	0
APPLIED GENETIC TECHNOL CORP	COM	03820J100	2,321	557,834	SH		DFND		557,834	0	0
ARDELYX INC	COM	039697107	9,635	2,050,010	SH		DFND		2,050,010	0	0
ARYA SCIENCES ACQUISITION CO	SHS CL A	G3165V109	10,310	1,000,000	SH		DFND		1,000,000	0	0
ARYA SCIENCES ACQUISITION CO	*W EXP 10/10/202	G3165V125	760	500,000	SH		DFND		500,000	0	0
AT HOME GROUP INC	COM	04650Y100	23,569	2,450,000	SH		DFND		2,450,000	0	0
AVEO PHARMACEUTICALS INC	COM	053588109	1,671	1,978,723	SH		DFND		1,978,723	0	0
AZURRX BIOPHARMA INC	COM	05502L105	640	1,067,571	SH		DFND		1,067,571	0	0
BEYOND MEAT INC	COM	08862E109	22,665	152,500	SH	Call	DFND		152,500	0	0
BIG ROCK PARTNERS ACQUISI CO	*W EXP 12/01/202	089482111	14	82,500	SH		DFND		82,500	0	0
BIG ROCK PARTNERS ACQUISI CO	RIGHT 12/01/2022	089482129	36	165,000	SH		DFND		165,000	0	0
BIOCERES CROP SOLUTIONS CORP	*W EXP 03/14/202	G1117K106	68	200,000	SH		DFND		200,000	0	0
BONANZA CREEK ENERGY INC	COM NEW	097793400	336	15,000	SH		DFND		15,000	0	0
CARDLYTICS INC	COM	14161W105	12,569	375,000	SH		DFND		375,000	0	0
CARVANA CO	CL A	146869102	118,800	1,800,000	SH		DFND		1,800,000	0	0
CHARDAN HEALTHCARE ACQUISITI	COM	15957A108	1,391	136,995	SH		DFND		136,995	0	0
CHARDAN HEALTHCARE ACQUISITI	*W EXP 12/13/202	15957A116	116	150,000	SH		DFND		150,000	0	0
CHASERG TECHNLGY ACQUISITN C	*W EXP 04/10/202	16166A111	75	75,000	SH		DFND		75,000	0	0
CHIMERIX INC	COM	16934W106	776	330,061	SH		DFND		330,061	0	0
COCA COLA CO	COM	191216100	16,332	300,000	SH	Put	DFND		300,000	0	0
CONCRETE PUMPING HLDGS INC	COM	206704108	783	197,245	SH		DFND		197,245	0	0
CONTRAFECT CORP	COM	212326102	895	2,500,000	SH		DFND		2,500,000	0	0
CRESUD S A C I F Y A	SPONSORED ADR	226406106	5,540	937,360	SH		DFND		937,360	0	0
CUE BIOPHARMA INC	COM	22978P106	2,529	300,000	SH		DFND		300,000	0	0
DERMTECH INC	*W EXP 08/29/202	24984K113	46	380,000	SH		DFND		380,000	0	0
DHT HOLDINGS INC	SHS NEW	Y2065G121	3,168	515,000	SH		DFND		515,000	0	0
DIAMOND S SHIPPING INC	COM	Y20676105	5,345	485,000	SH		DFND		485,000	0	0
DIANA SHIPPING INC	COM	Y2066G104	921	272,622	SH		DFND		272,622	0	0
EDTECHX HLDGS ACQUISITION CO	*W EXP 12/31/202	28138X111	30	125,000	SH		DFND		125,000	0	0
EIGER BIOPHARMACEUTICALS INC	COM	28249U105	19,071	1,860,529	SH		DFND		1,860,529	0	0
ENERGY RECOVERY INC	COM	29270J100	8,987	970,000	SH		DFND		970,000	0	0
ENOVA INTL INC	COM	29357K103	18,571	895,000	SH		DFND		895,000	0	0
ESTRE AMBIENTAL INC	*W EXP 12/21/202	G3206V118	17	730,000	SH		DFND		730,000	0	0
FALCON MINERALS CORP	*W EXP 07/21/202	30607B208	52	149,600	SH		DFND		149,600	0	0
FATE THERAPEUTICS INC	COM	31189P102	3,494	225,000	SH		DFND		225,000	0	0
FENNEC PHARMACEUTICALS INC	COM	31447P100	4,672	971,351	SH		DFND		971,351	0	0
FORTRESS BIOTECH INC	COM	34960Q109	283	200,000	SH		DFND		200,000	0	0
FORUM MERGER II CORP	*W EXP 09/30/202	34986F111	177	300,000	SH		DFND		300,000	0	0
GALMED PHARMACEUTICALS LTD	SHS	M47238106	6,483	1,356,356	SH		DFND		1,356,356	0	0
GENCO SHIPPING & TRADING LTD	SHS	Y2685T131	1,660	180,496	SH		DFND		180,496	0	0
GENERAL MLS INC	COM	370334104	5,512	100,000	SH	Put	DFND		100,000	0	0
GENERAL MTRS CO	COM	37045V100	28,110	750,000	SH	Call	DFND		750,000	0	0
GIGCAPITAL INC	RIGHT 03/06/2020	37518N114	88	98,600	SH		DFND		98,600	0	0
GIGCAPITAL INC	*W EXP 06/08/202	37518N122	102	150,000	SH		DFND		150,000	0	0
GLOBALSTAR INC	COM	378973408	6,377	15,415,778	SH		DFND		15,415,778	0	0
GLOBALSTAR INC	NOTE 5.750% 4/0	378973AD3	361	508,004	SH		DFND		508,004	0	0
GORDON POINTE ACQUISITION CO	*W EXP 07/30/202	382788115	90	225,000	SH		DFND		225,000	0	0
GRAF INDL CORP	*W EXP 12/31/202	384278115	88	225,000	SH		DFND		225,000	0	0
GREENLAND ACQUISITIN CORPORA	*W EXP 03/03/202	G40981105	29	150,000	SH		DFND		150,000	0	0
GREENLAND ACQUISITIN CORPORA	RIGHT 04/27/2025	G40981113	90	150,000	SH		DFND		150,000	0	0
GREIF INC	CL B	397624206	543	11,910	SH		DFND		11,910	0	0
HEALTH SCIENCES ACQUSTN CORP	COM	42227C102	8,016	800,000	SH		DFND		800,000	0	0
HEALTH SCIENCES ACQUSTN CORP	*W EXP 04/01/202	42227C110	672	800,000	PRN		DFND		800,000	0	0
HERSHEY CO	COM	427866108	54,247	350,000	SH	Put	DFND		350,000	0	0
HL ACQUISITIONS CORP	*W EXP 06/21/202	G4603R122	47	180,000	SH		DFND		180,000	0	0
HL ACQUISITIONS CORP	RIGHT 07/17/2023	G4603R130	49	180,000	SH		DFND		180,000	0	0
HOSTESS BRANDS INC	*W EXP 11/04/202	44109J114	4,309	2,520,000	SH		DFND		2,520,000	0	0
IFRESH INC	COM	449538107	56	30,000	SH		DFND		30,000	0	0
INSPIRED ENTMT INC	COM	45782N108	5,764	801,824	SH		DFND		801,824	0	0
INTEL CORP	COM	458140100	5,153	100,000	SH	Put	DFND		100,000	0	0
IRSA INVERSIONES Y REP S A	GLOBL DEP RCPT	450047204	4,767	906,224	SH		DFND		906,224	0	0
IRSA PROPIEDADES COMERCIALES	SPONSORED ADR	463588103	2,405	185,000	SH		DFND		185,000	0	0
JOHNSON & JOHNSON	COM	478160104	3,235	25,000	SH		DFND		25,000	0	0
JOHNSON & JOHNSON	COM	478160104	6,469	50,000	SH	Put	DFND		50,000	0	0
KADMON HLDGS INC	COM	48283N106	844	334,900	SH		DFND		334,900	0	0
KROGER CO	COM	501044101	12,890	500,000	SH	Call	DFND		500,000	0	0
LEAP THERAPEUTICS INC	COM	52187K101	176	150,142	SH		DFND		150,142	0	0
LEGACY ACQUISITION CORP	*W EXP 11/30/202	524643111	175	500,000	SH		DFND		500,000	0	0
LEISURE ACQUISITION CORP	*W EXP 12/05/201	52539T115	95	125,000	SH		DFND		125,000	0	0
LF CAP ACQUISITION CORP	*W EXP 06/22/202	50200K116	185	450,000	SH		DFND		450,000	0	0
MACROGENICS INC	COM	556099109	5,104	400,000	SH		DFND		400,000	0	0
MAIDEN HOLDINGS LTD	SHS	G5753U112	5,908	7,876,964	SH		DFND		7,876,964	0	0
MARINUS PHARMACEUTICALS INC	COM	56854Q101	1,695	1,100,000	SH		DFND		1,100,000	0	0
M D C HLDGS INC	COM	552676108	4,310	100,000	SH	Put	DFND		100,000	0	0
MEGALITH FINL ACQUISITION CO	*W EXP 08/26/202	58518F117	152	400,000	SH		DFND		400,000	0	0
MEIRAGTX HOLDINGS PLC	COM	G59665102	6,380	400,000	SH		DFND		400,000	0	0
MIRAGEN THERAPEUTICS INC	COM	60463E103	1,291	1,766,038	SH		DFND		1,766,038	0	0
MUDRICK CAP ACQUISITION CORP	COM CLASS A	624745105	19,534	1,900,000	SH		DFND		1,900,000	0	0
MUDRICK CAP ACQUISITION CORP	*W EXP 02/12/202	624745113	1,563	2,500,000	SH		DFND		2,500,000	0	0
MUSTANG BIO INC	COM	62818Q104	2,038	625,000	SH		DFND		625,000	0	0
NATIONAL ENERGY SERVICES REU	*W EXP 05/05/202	G6375R115	290	725,000	SH		DFND		725,000	0	0
NAVIOS MARITIME CONTAINERS L	COM UNIT RP LP	Y62151108	4,447	2,235,000	SH		DFND		2,235,000	0	0
NEW FRONTIER CORP	*W EXP 99/99/999	G6485P124	50	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
NOVUS THERAPEUTICS INC	COM	67011N105	386	623,102	SH		DFND		623,102	0	0
NRC GROUP HLDGS CORP	*W EXP 10/17/202	629375114	1,269	537,500	SH		DFND		537,500	0	0
ON DECK CAP INC	COM	682163100	12,517	3,725,000	SH		DFND		3,725,000	0	0
ONCONOVA THERAPEUTICS INC	COM PAR	68232V405	476	560,000	SH		DFND		560,000	0	0
ONCOSEC MED INC	COM	68234L306	370	188,000	SH		DFND		188,000	0	0
OPES ACQUISITION CORP	*W EXP 03/13/202	68373P118	27	150,000	SH		DFND		150,000	0	0
ORACLE CORP	COM	68389X105	22,012	400,000	SH	Put	DFND		400,000	0	0
ORISUN ACQUISITION CORP	UNIT 99/99/9999	68632T208	500	50,000	SH		DFND		50,000	0	0
OTONOMY INC	COM	68906L105	2,629	1,100,000	SH		DFND		1,100,000	0	0
PENN VA CORP NEW	COM	70788V102	16,790	577,599	SH		DFND		577,599	0	0
PENSARE ACQUISITION CORP	*W EXP 07/27/202	70957E113	27	115,000	SH		DFND		115,000	0	0
PENSARE ACQUISITION CORP	RIGHT 99/99/9999	70957E121	181	605,000	SH		DFND		605,000	0	0
PEPSICO INC	COM	713448108	13,710	100,000	SH	Put	DFND		100,000	0	0
PG&E CORP	COM	69331C108	9,000	900,000	SH		DFND		900,000	0	0
PIERIS PHARMACEUTICALS INC	COM	720795103	512	150,257	SH		DFND		150,257	0	0
POLARITYTE INC	COM	731094108	474	146,733	SH		DFND		146,733	0	0
PROCTER & GAMBLE CO	COM	742718109	24,876	200,000	SH	Put	DFND		200,000	0	0
REDHILL BIOPHARMA LTD	SPONSORED ADS	757468103	24,472	3,476,039	SH		DFND		3,476,039	0	0
SCHULTZE SPL PURP ACQUSTN CO	*W EXP 12/31/202	80821R117	105	300,000	SH		DFND		300,000	0	0
SCORPIO TANKERS INC	NOTE 3.000% 5/1	80918TAB5	2,127	2,000,000	SH		DFND		2,000,000	0	0
SCORPIO TANKERS INC	SHS	Y7542C130	5,568	187,100	SH		DFND		187,100	0	0
SEADRILL LTD	COM	G7998G106	1,317	627,302	SH		DFND		627,302	0	0
SELLAS LIFE SCIENCES GROUP I	COM	81642T100	400	3,300,000	SH		DFND		3,300,000	0	0
SIERRA ONCOLOGY INC	COM	82640U107	1,279	3,274,953	SH		DFND		3,274,953	0	0
SOLENO THERAPEUTICS INC	COM NEW	834203200	854	569,087	SH		DFND		569,087	0	0
SEQUENTIAL BRNDS GROUP INC N	COM	81734P107	504	2,190,000	SH		DFND		2,190,000	0	0
STRONGBRIDGE BIOPHARMA PLC	SHS USD	G85347105	2,208	923,700	SH		DFND		923,700	0	0
SYNDAX PHARMACEUTICALS INC	COM	87164F105	8,751	1,171,648	SH		DFND		1,171,648	0	0
SYNTHETIC BIOLOGICS INC	COM NEW	87164U201	19	42,858	SH		DFND		42,858	0	0
SYROS PHARMACEUTICALS INC	COM	87184Q107	4,461	429,775	SH		DFND		429,775	0	0
TEEKAY TANKERS LTD	CL A	Y8565N102	1,853	1,425,000	SH		DFND		1,425,000	0	0
TENZING ACQUISITION CORP	*W EXP 02/23/202	G8708A108	40	200,000	SH		DFND		200,000	0	0
TESLA INC	COM	88160R101	6,022	25,000	SH	Call	DFND		25,000	0	0
TESLA INC	COM	88160R101	59,615	247,500	SH	Put	DFND		247,500	0	0
TG THERAPEUTICS INC	COM	88322Q108	2,246	400,000	SH		DFND		400,000	0	0
TIBERIUS ACQUISITION CORP	*W EXP 02/28/202	88633A115	266	450,000	PRN		DFND		450,000	0	0
TKK SYMPHONY ACQUISITION COR	*W EXP 02/20/202	G88950129	20	225,000	SH		DFND		225,000	0	0
TKK SYMPHONY ACQUISITION COR	RIGHT 02/20/2020	G88950137	54	225,000	SH		DFND		225,000	0	0
TOTTENHAM ACQUISITION I LTD	*W EXP 05/06/202	G8959N114	92	542,000	SH		DFND		542,000	0	0
TOTTENHAM ACQUISITION I LTD	RIGHT 06/05/2020	G8959N122	39	134,000	SH		DFND		134,000	0	0
TRACON PHARMACEUTICALS INC	COM	89237H100	1,161	2,597,680	SH		DFND		2,597,680	0	0
TRIDENT ACQUISITIONS CORP	*W EXP 05/09/202	89615T114	299	1,993,750	SH		DFND		1,993,750	0	0
TRINITY MERGER CORP	*W EXP 05/11/202	89653L114	889	700,000	SH		DFND		700,000	0	0
TRIVAGO N V	SPON ADS A SHS	89686D105	12,829	3,121,334	SH		DFND		3,121,334	0	0
TWELVE SEAS INVESTMENT COMPA	*W EXP 12/22/202	G9145A115	186	581,850	SH		DFND		581,850	0	0
TWELVE SEAS INVESTMENT COMPA	RIGHT 12/22/2019	G9145A131	65	175,000	SH		DFND		175,000	0	0
UNIQURE NV	SHS	N90064101	22,435	570,000	SH		DFND		570,000	0	0
VBI VACCINES INC	COM NEW	91822J103	942	2,000,000	SH		DFND		2,000,000	0	0
VECTOIQ ACQUISITION CORP	*W EXP 05/11/202	92243N111	258	500,000	SH		DFND		500,000	0	0
WARRIOR MET COAL INC	COM	93627C101	4,782	245,000	SH		DFND		245,000	0	0
XBIOTECH INC	COM	98400H102	628	60,000	SH		DFND		60,000	0	0
ZAFGEN INC	COM	98885E103	1,723	2,331,413	SH		DFND		2,331,413	0	0
ZIOPHARM ONCOLOGY INC	COM	98973P101	428	100,000	SH		DFND		100,000	0	0
ZOGENIX INC	COM NEW	98978L204	2,002	50,000	SH		DFND		50,000	0	0