GROUP ONE TRADING LLC Q1 2021 Filing

Filed May 12, 2021

Portfolio Value

$67.5M

Holdings

7,548

Report Date

Q1 2021

Filing Type

13F-HR

All Holdings (7,548 positions)

#	Stock	Shares	Value	% Portfolio	Type
4901	CVGICOMMERCIAL VEH GROUP INC	21,619	$209K	0.31%
4902	—TEXTAINER GROUP HOLDINGS LTD	7,300	$209K	0.31%	Call
4903	VACMARRIOTT VACTINS WORLDWID CO	1,200	$209K	0.31%	Call
4904	—INVESCO ACTIVLY MANGD ETC FD	12,100	$209K	0.31%	Call
4905	KNKNOWLES CORP	10,000	$209K	0.31%	Put
4906	FSKFS KKR CAP CORP	10,500	$208K	0.31%	Call
4907	DHCDIVERSIFIED HEALTHCARE TR	43,531	$208K	0.31%
4908	—VIACOMCBS INC	4,400	$208K	0.31%	Call
4909	GANGAN LTD	11,427	$208K	0.31%
4910	DANDANA INC	8,500	$207K	0.31%	Put
4911	ATKRATKORE INC	2,883	$207K	0.31%
4912	TDYTELEDYNE TECHNOLOGIES INC	500	$207K	0.31%	Call
4913	CRMDCORMEDIX INC	20,700	$207K	0.31%	Put
4914	—VAPOTHERM INC	8,600	$207K	0.31%	Call
4915	CITUSDCIT GROUP INC	4,006	$206K	0.31%
4916	—VEONEER INC	8,400	$206K	0.31%	Call
4917	VAC2USDVBI VACCINES INC CDA	66,230	$206K	0.31%
4918	—RMG ACQUISITION CORP II	20,600	$206K	0.31%	Call
4919	TXNMPNM RES INC	4,200	$206K	0.31%	Call
4920	—IDERA PHARMACEUTICALS INC	157,700	$205K	0.30%	Put
4921	BCOVUSDBRIGHTCOVE INC	10,213	$205K	0.30%
4922	OPYOPPENHEIMER HLDGS INC	5,130	$205K	0.30%
4923	RGNXREGENXBIO INC	6,000	$205K	0.30%	Call
4924	TBCHTURTLE BEACH CORP	7,700	$205K	0.30%	Put
4925	—ODONATE THERAPEUTICS INC	59,800	$205K	0.30%	Put
4926	ACIWACI WORLDWIDE INC	5,400	$205K	0.30%	Put
4927	CTVHELIX ENERGY SOLUTIONS GRP I	40,435	$204K	0.30%
4928	—UXIN LTD	174,100	$204K	0.30%	Put
4929	—GENETIC TECHNOLOGIES LTD	48,835	$204K	0.30%
4930	HRTXHERON THERAPEUTICS INC	12,600	$204K	0.30%	Put
4931	—COWEN INC	5,800	$204K	0.30%	Put
4932	MIC2EURMACQUARIE INFRASTRUCTURE COR	6,383	$203K	0.30%
4933	—SPORTSMANS WHSE HLDGS INC	11,800	$203K	0.30%	Put
4934	—PAYA HOLDINGS INC	18,500	$203K	0.30%	Put
4935	—TWC TECH HLDGS II CORP	20,616	$203K	0.30%
4936	FSSFEDERAL SIGNAL CORP	5,300	$203K	0.30%	Call
4937	IRINGERSOLL RAND INC	4,100	$202K	0.30%	Put
4938	ESPRESPERION THERAPEUTICS INC NE	7,200	$202K	0.30%	Put
4939	APLSAPELLIS PHARMACEUTICALS INC	4,700	$202K	0.30%	Put
4940	—MRC GLOBAL INC	22,400	$202K	0.30%	Call
4941	MDXGMIMEDX GROUP INC	19,500	$201K	0.30%	Put
4942	—GOLDEN OCEAN GROUP LTD	30,000	$201K	0.30%	Put
4943	BBWBUILD-A-BEAR WORKSHOP INC	29,200	$201K	0.30%	Call
4944	—CHEMBIO DIAGNOSTICS INC	57,200	$201K	0.30%	Call
4945	VXRTVAXART INC	33,273	$201K	0.30%
4946	NSPINSPERITY INC	2,400	$201K	0.30%	Put
4947	VREMACK CALI RLTY CORP	1,300	$201K	0.30%	Call
4948	TGNATEGNA INC	10,700	$201K	0.30%	Call
4949	GWWGRAINGER W W INC	500	$200K	0.30%	Put
4950	FBKFB FINL CORP	4,500	$200K	0.30%	Call
4951	—RESONANT INC	47,200	$200K	0.30%	Call
4952	AYTUAYTU BIOPHARMA INC	26,300	$200K	0.30%	Call
4953	EWBCEAST WEST BANCORP INC	2,700	$199K	0.29%	Call
4954	—MINERVA NEUROSCIENCES INC	68,300	$199K	0.29%	Call
4955	—FARO TECHNOLOGIES INC	2,300	$199K	0.29%	Call
4956	—BETTER WORLD ACQUISITION COR	20,000	$199K	0.29%
4957	—MANPOWERGROUP INC	200	$198K	0.29%	Put
4958	TROXTRONOX HOLDINGS PLC	10,800	$198K	0.29%	Put
4959	—SMARTSHEET INC	3,100	$198K	0.29%	Put
4960	NWSANEWS CORP NEW	7,800	$198K	0.29%	Put
4961	—DPCM CAP INC	19,997	$197K	0.29%
4962	IDCCINTERDIGITAL INC	3,100	$197K	0.29%	Call
4963	—AIRNET TECHNOLOGY INC	57,500	$197K	0.29%	Call
4964	—HEPION PHARMACEUTICALS INC	106,900	$197K	0.29%	Put
4965	—MERSANA THERAPEUTICS INC	12,200	$197K	0.29%	Put
4966	SIBNSI BONE INC	6,200	$197K	0.29%	Call
4967	—MERIDIAN BIOSCIENCE INC	7,500	$197K	0.29%	Call
4968	—LISTED FD TR	15,300	$197K	0.29%	Put
4969	—CSI COMPRESSCO LP	107,600	$196K	0.29%	Call
4970	—BERKELEY LTS INC	3,900	$196K	0.29%	Put
4971	BDQMALBIREO PHARMA INC	5,566	$196K	0.29%
4972	CAMPEURCALAMP CORP	18,055	$196K	0.29%
4973	DOOREURMASONITE INTL CORP	1,700	$196K	0.29%
4974	CFRCULLEN FROST BANKERS INC	1,800	$196K	0.29%	Put
4975	NVDANVIDIA CORPORATION	366,100	$195K	0.29%	Put
4976	—IBIO INC	126,900	$195K	0.29%	Call
4977	—BARNES & NOBLE ED INC	23,900	$195K	0.29%	Put
4978	—FREQUENCY THERAPEUTICS INC	20,500	$195K	0.29%	Call
4979	—IDERA PHARMACEUTICALS INC	150,374	$195K	0.29%
4980	—HEPION PHARMACEUTICALS INC	105,971	$195K	0.29%
4981	—DYCOM INDS INC	2,100	$195K	0.29%	Put
4982	AVTAVNET INC	4,700	$195K	0.29%	Call
4983	—VARIAN MED SYS INC	1,100	$194K	0.29%	Put
4984	—CYMABAY THERAPEUTICS INC	42,800	$194K	0.29%	Put
4985	IARTINTEGRA LIFESCIENCES HLDGS C	2,800	$193K	0.29%	Call
4986	—EXPERIENCE INVT CORP	18,800	$193K	0.29%	Put
4987	—BEST INC	102,600	$193K	0.29%	Put
4988	—ATHENE HOLDING LTD	3,800	$192K	0.28%	Put
4989	K6BKBR INC	4,993	$192K	0.28%
4990	VCTRVICTORY CAP HLDGS INC	7,500	$192K	0.28%	Put
4991	CBTCABOT CORP	3,670	$192K	0.28%
4992	CAPRCAPRICOR THERAPEUTICS INC	41,089	$192K	0.28%
4993	—PENNYMAC MTG INVT TR	9,800	$192K	0.28%	Put
4994	AXGNAXOGEN INC	9,500	$192K	0.28%	Call
4995	CECELANESE CORP DEL	1,278	$191K	0.28%
4996	ALLOALLOGENE THERAPEUTICS INC	5,400	$191K	0.28%	Call
4997	HOLIHOLLYSYS AUTOMATION TCHNGY L	15,287	$191K	0.28%
4998	—HC2 HLDGS INC	48,600	$191K	0.28%	Put
4999	—HEXCEL CORP NEW	3,400	$190K	0.28%	Call
5000	CMSCMS ENERGY CORP	3,100	$190K	0.28%	Call

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