GROUP ONE TRADING LLC Q4 2020 Filing

Filed February 10, 2021

Portfolio Value

$57.8M

Holdings

6,453

Report Date

Q4 2020

Filing Type

13F-HR

All Holdings (6,453 positions)

#	Stock	Shares	Value	% Portfolio	Type
4001	RLIRLI CORP	2,000	$208K	0.36%	Call
4002	—BROADMARK RLTY CAP INC	20,400	$208K	0.36%	Call
4003	ESEVERSOURCE ENERGY	2,400	$208K	0.36%	Call
4004	VSHVISHAY INTERTECHNOLOGY INC	10,000	$207K	0.36%	Put
4005	—DSP GROUP INC	12,477	$207K	0.36%
4006	ACMRACM RESEARCH INC	2,543	$207K	0.36%
4007	—TITAN MACHY INC	10,600	$207K	0.36%	Put
4008	—DONNELLEY R R & SONS CO	91,700	$207K	0.36%	Call
4009	ATNMACTINIUM PHARMACEUTICALS INC	26,600	$207K	0.36%	Call
4010	LQDTLIQUIDITY SERVICES INC	13,000	$207K	0.36%	Call
4011	CVICVR ENERGY INC	13,800	$206K	0.36%	Put
4012	WIMIWIMI HOLOGRAM CLOUD INC	35,800	$206K	0.36%	Call
4013	—RADIUS HEALTH INC	11,475	$205K	0.35%
4014	ACCUSDAMERICAN CAMPUS CMNTYS INC	4,794	$205K	0.35%
4015	FLOFLOWERS FOODS INC	9,049	$205K	0.35%
4016	—INOVALON HLDGS INC	11,300	$205K	0.35%	Call
4017	ANABANAPTYSBIO INC	9,500	$204K	0.35%	Call
4018	CWSTCASELLA WASTE SYS INC	3,296	$204K	0.35%
4019	HLXHELIX ENERGY SOLUTIONS GRP I	48,300	$203K	0.35%	Call
4020	TSTENARIS S A	12,700	$203K	0.35%	Call
4021	—PHILLIPS 66 PARTNERS LP	7,700	$203K	0.35%	Put
4022	POSTPOST HLDGS INC	2,000	$202K	0.35%	Call
4023	AFGAMERICAN FINL GROUP INC OHIO	2,300	$202K	0.35%	Call
4024	NGLNGL ENERGY PARTNERS LP	84,200	$202K	0.35%	Call
4025	KFRCKFORCE INC	4,800	$202K	0.35%	Call
4026	NOVAQSUNNOVA ENERGY INTL INC.	4,449	$201K	0.35%
4027	—VIVINT SMART HOME INC	9,700	$201K	0.35%	Put
4028	—GENOCEA BIOSCIENCES INC	83,200	$201K	0.35%	Call
4029	—SOLARWINDS CORP	13,400	$200K	0.35%	Put
4030	LDOSLEIDOS HOLDINGS INC	1,900	$200K	0.35%	Call
4031	—CYMABAY THERAPEUTICS INC	34,800	$200K	0.35%	Call
4032	RHIROBERT HALF INTL INC	3,200	$200K	0.35%	Call
4033	CRKCOMSTOCK RES INC	45,600	$199K	0.34%	Call
4034	—OZON HLDGS PLC	4,800	$199K	0.34%	Call
4035	CLDTCHATHAM LODGING TR	18,390	$199K	0.34%
4036	CN4CONNS INC	16,930	$198K	0.34%
4037	—PROVENTION BIO INC	11,600	$197K	0.34%	Call
4038	OZKBANK OZK	6,300	$197K	0.34%	Call
4039	MASMASCO CORP	3,565	$196K	0.34%
4040	AOSSMITH A O CORP	3,570	$196K	0.34%
4041	HFCUSDHOLLYFRONTIER CORP	7,580	$196K	0.34%
4042	—SPARTANNASH CO	11,200	$195K	0.34%	Put
4043	—LAREDO PETROLEUM INC	9,900	$195K	0.34%	Put
4044	NSPINSPERITY INC	2,400	$195K	0.34%	Put
4045	—CBDMD INC	66,100	$195K	0.34%	Put
4046	SKYSKYLINE CHAMPION CORPORATION	6,305	$195K	0.34%
4047	—SHIFT TECHNOLOGIES INC	23,400	$194K	0.34%	Put
4048	ABJAABB LTD	6,923	$194K	0.34%
4049	—JOUNCE THERAPEUTICS INC	27,600	$193K	0.33%	Call
4050	—GTT COMMUNICATIONS INC	53,931	$193K	0.33%
4051	—QIWI PLC	18,700	$193K	0.33%	Call
4052	—RENAISSANCE CAP GREENWICH FD	3,000	$193K	0.33%	Put
4053	GNSSGENASYS INC	29,600	$193K	0.33%	Call
4054	NGLNGL ENERGY PARTNERS LP	79,828	$192K	0.33%
4055	RYROYAL BK CDA	2,335	$192K	0.33%
4056	—CONTEXTLOGIC INC	10,500	$192K	0.33%	Put
4057	—MTS SYS CORP	3,290	$191K	0.33%
4058	FULTPFULTON FINL CORP PA	15,000	$191K	0.33%	Call
4059	DTDYNATRACE INC	4,387	$190K	0.33%
4060	GFLGFL ENVIRONMENTAL INC	6,500	$190K	0.33%	Call
4061	—KADMON HLDGS INC	45,600	$189K	0.33%	Call
4062	HLITHARMONIC INC	25,600	$189K	0.33%	Call
4063	—ALASKA COMMUNICATIONS SYS GR	51,200	$189K	0.33%	Put
4064	—INSPIRE MED SYS INC	1,000	$188K	0.33%	Call
4065	—RENREN INC	39,500	$188K	0.33%	Put
4066	—ENGLOBAL CORP	58,700	$188K	0.33%	Call
4067	CRBPEURCORBUS PHARMACEUTICALS HLDGS	150,616	$188K	0.33%
4068	XNETXUNLEI LTD	65,200	$188K	0.33%	Call
4069	EXTREXTREME NETWORKS INC	27,100	$187K	0.32%	Call
4070	PSNLPERSONALIS INC	5,100	$187K	0.32%	Call
4071	EYENATIONAL VISION HLDGS INC	4,100	$186K	0.32%	Call
4072	CRSCARPENTER TECHNOLOGY CORP	6,391	$186K	0.32%
4073	LABFLUIDIGM CORP DEL	31,000	$186K	0.32%	Put
4074	CAPRCAPRICOR THERAPEUTICS INC	54,300	$186K	0.32%	Call
4075	G2CEVERI HLDGS INC	13,372	$185K	0.32%
4076	CSGPCOSTAR GROUP INC	200	$185K	0.32%
4077	NXTCNEXTCURE INC	17,000	$185K	0.32%
4078	—PETIQ INC	4,800	$185K	0.32%	Call
4079	—STONEMOR INC	70,300	$185K	0.32%	Call
4080	—M D C HLDGS INC	3,800	$185K	0.32%	Put
4081	CHTRCHARTER COMMUNICATIONS INC N	278,800	$184K	0.32%	Call
4082	YUMYUM BRANDS INC	1,691	$184K	0.32%
4083	—TARO PHARMACEUTICAL INDS LTD	2,500	$184K	0.32%	Put
4084	BRKRBRUKER CORP	3,400	$184K	0.32%	Put
4085	ASMBASSEMBLY BIOSCIENCES INC	30,355	$184K	0.32%
4086	—TRAVELCENTERS OF AMERICA INC	5,600	$183K	0.32%	Call
4087	ACCOACCO BRANDS CORP	21,600	$183K	0.32%	Call
4088	EVRGEVERGY INC	3,300	$183K	0.32%	Put
4089	CLFDCLEARFIELD INC	7,400	$183K	0.32%	Call
4090	PLXPROTALIX BIOTHERAPEUTICS INC	50,280	$183K	0.32%
4091	RBBNRIBBON COMMUNICATIONS INC	27,907	$183K	0.32%
4092	—CYMABAY THERAPEUTICS INC	31,700	$182K	0.31%	Put
4093	—SCULPTOR CAP MGMT	12,000	$182K	0.31%	Put
4094	IARTINTEGRA LIFESCIENCES HLDGS C	2,800	$182K	0.31%	Call
4095	HRLHORMEL FOODS CORP	3,900	$182K	0.31%	Put
4096	—AGILE THERAPEUTICS INC	63,000	$181K	0.31%	Call
4097	AMCRAMCOR PLC	15,400	$181K	0.31%	Call
4098	—INOVALON HLDGS INC	9,970	$181K	0.31%
4099	—NEOPHOTONICS CORP	19,900	$181K	0.31%	Call
4100	AMKRAMKOR TECHNOLOGY INC	12,003	$181K	0.31%

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