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
4401	LN5LANNET INC	62,865	$332K	0.49%
4402	—NEOPHOTONICS CORP	27,744	$332K	0.49%
4403	—CORNERSTONE ONDEMAND INC	7,600	$331K	0.49%	Call
4404	SATSECHOSTAR CORP	13,800	$331K	0.49%	Put
4405	AMRCAMERESCO INC	6,800	$331K	0.49%	Call
4406	IMGIAMGOLD CORP	111,137	$331K	0.49%
4407	ATEXANTERIX INC	7,000	$330K	0.49%	Call
4408	ICLKGBPICLICK INTERACTIVE ASIA GROU	28,071	$330K	0.49%
4409	—LIVEXLIVE MEDIA INC	75,870	$329K	0.49%
4410	KLICKULICKE & SOFFA INDS INC	6,683	$328K	0.49%
4411	RVLVREVOLVE GROUP INC	7,300	$328K	0.49%	Put
4412	WHWYNDHAM HOTELS & RESORTS INC	4,700	$328K	0.49%	Put
4413	CYTKCYTOKINETICS INC	14,100	$328K	0.49%	Put
4414	—DAVIDSTEA INC	87,200	$328K	0.49%	Put
4415	XIFRNEXTERA ENERGY PARTNERS LP	4,500	$328K	0.49%	Put
4416	WVEWAVE LIFE SCIENCES LTD	58,253	$327K	0.48%
4417	GKOSGLAUKOS CORP	3,900	$327K	0.48%	Call
4418	ESPRESPERION THERAPEUTICS INC NE	11,642	$327K	0.48%
4419	FSKFS KKR CAP CORP	16,500	$327K	0.48%	Put
4420	—NAVISTAR INTL CORP NEW	7,400	$326K	0.48%	Put
4421	—OTONOMY INC	127,800	$326K	0.48%	Call
4422	—AVADEL PHARMACEUTICALS PLC	36,100	$326K	0.48%	Put
4423	—REALOGY HLDGS CORP	21,500	$325K	0.48%	Call
4424	—DOMTAR CORP	8,800	$325K	0.48%	Put
4425	YUMYUM BRANDS INC	3,000	$325K	0.48%	Put
4426	LEUCENTRUS ENERGY CORP	13,700	$325K	0.48%	Put
4427	—LSB INDS INC	63,400	$325K	0.48%	Call
4428	IEPICAHN ENTERPRISES LP	6,050	$325K	0.48%
4429	—ADAMIS PHARMACEUTICALS CORP	344,800	$324K	0.48%	Call
4430	—RUTHS HOSPITALITY GROUP INC	13,000	$323K	0.48%	Call
4431	BBWBUILD-A-BEAR WORKSHOP INC	46,622	$322K	0.48%
4432	IPIINTREPID POTASH INC	9,900	$322K	0.48%	Call
4433	—APARTMENT INVT & MGMT CO	52,500	$322K	0.48%	Put
4434	EP3ORASURE TECHNOLOGIES INC	27,496	$321K	0.48%
4435	CDNACAREDX INC	4,700	$320K	0.47%	Put
4436	—SILK RD MED INC	6,300	$319K	0.47%	Call
4437	CHKPCHECK POINT SOFTWARE TECH LT	2,845	$319K	0.47%
4438	BJRIBJS RESTAURANTS INC	5,500	$319K	0.47%	Call
4439	TMDXTRANSMEDICS GROUP INC	7,663	$318K	0.47%
4440	TXRHTEXAS ROADHOUSE INC	3,314	$318K	0.47%
4441	WHWYNDHAM HOTELS & RESORTS INC	4,551	$318K	0.47%
4442	CDLXCARDLYTICS INC	2,900	$318K	0.47%	Put
4443	LILALIBERTY LATIN AMERICA LTD	24,700	$317K	0.47%	Call
4444	COLMCOLUMBIA SPORTSWEAR CO	3,000	$317K	0.47%	Put
4445	HTGCHERCULES CAPITAL INC	19,714	$316K	0.47%
4446	CORTCORCEPT THERAPEUTICS INC	13,300	$316K	0.47%	Put
4447	PPGPPG INDS INC	2,106	$316K	0.47%
4448	—SPARK NETWORKS SE	42,224	$315K	0.47%
4449	IRTINDEPENDENCE RLTY TR INC	20,700	$315K	0.47%	Put
4450	PVG1EURPRETIUM RES INC	30,403	$315K	0.47%
4451	SBHSALLY BEAUTY HLDGS INC	15,600	$314K	0.47%	Call
4452	—ENTERCOM COMMUNICATIONS CORP	59,700	$313K	0.46%	Put
4453	—MUSTANG BIO INC	94,400	$313K	0.46%	Put
4454	TEXTEREX CORP NEW	6,800	$313K	0.46%	Put
4455	—GOLDEN ENTMT INC	12,400	$313K	0.46%	Call
4456	BG3BIG 5 SPORTING GOODS CORP	19,783	$311K	0.46%
4457	AQMSEURAQUA METALS INC	76,846	$311K	0.46%
4458	—EMCORE CORP	57,000	$311K	0.46%	Call
4459	ERFGBPENERPLUS CORP	62,157	$311K	0.46%
4460	ONBPPOLD NATL BANCORP IND	16,000	$309K	0.46%	Put
4461	—9 METERS BIOPHARMA INC	264,400	$309K	0.46%	Call
4462	AVNTNAVIENT CORPORATION	21,600	$309K	0.46%	Put
4463	NXSTNEXSTAR MEDIA GROUP INC	2,200	$309K	0.46%	Call
4464	WTWISDOMTREE INVTS INC	49,510	$309K	0.46%
4465	GGENPACT LIMITED	7,200	$308K	0.46%	Put
4466	—EVOFEM BIOSCIENCES INC	175,400	$307K	0.45%	Call
4467	SKYWSKYWEST INC	5,641	$307K	0.45%
4468	—SYNACOR INC	140,300	$307K	0.45%	Call
4469	—MUSTANG BIO INC	92,100	$306K	0.45%	Call
4470	AMWDAMERICAN WOODMARK CORPORATIO	3,100	$306K	0.45%	Call
4471	APLEAPPLE HOSPITALITY REIT INC	21,000	$306K	0.45%	Put
4472	—POLARITYTE INC	276,000	$306K	0.45%	Call
4473	—BP PRUDHOE BAY RTY TR	81,700	$306K	0.45%	Call
4474	—EQUITY COMWLTH	1,100	$306K	0.45%	Put
4475	URBNURBAN OUTFITTERS INC	8,200	$305K	0.45%	Call
4476	—DECIPHERA PHARMACEUTICALS IN	6,800	$305K	0.45%	Put
4477	CFRCULLEN FROST BANKERS INC	2,800	$305K	0.45%
4478	TSAACI WORLDWIDE INC	8,023	$305K	0.45%
4479	SBACSBA COMMUNICATIONS CORP NEW	1,100	$305K	0.45%	Put
4480	—LIBERTY TRIPADVISOR HLDGS IN	47,700	$304K	0.45%	Call
4481	RLMDRELMADA THERAPEUTICS INC	8,600	$303K	0.45%	Call
4482	RCKTROCKET PHARMACEUTICALS INC	6,800	$302K	0.45%	Call
4483	AGCOAGCO CORP	2,100	$302K	0.45%	Put
4484	TZOOTRAVELZOO	18,000	$302K	0.45%	Call
4485	ENVAENOVA INTL INC	8,500	$302K	0.45%	Call
4486	—ASSERTIO HOLDINGS INC	442,200	$302K	0.45%	Call
4487	ATECALPHATEC HLDGS INC	19,100	$302K	0.45%	Call
4488	BNEDBARNES & NOBLE ED INC	37,046	$302K	0.45%
4489	HCCWARRIOR MET COAL INC	17,600	$301K	0.45%	Put
4490	—ORBCOMM INC	39,400	$301K	0.45%	Call
4491	—CHINDATA GROUP HLDGS LTD	18,200	$301K	0.45%	Call
4492	VVVVALVOLINE INC	11,500	$300K	0.44%	Call
4493	ALKALASKA AIR GROUP INC	4,340	$300K	0.44%
4494	ACRSACLARIS THERAPEUTICS INC	11,900	$300K	0.44%	Put
4495	—SK TELECOM LTD	1,100	$300K	0.44%	Call
4496	AXONEURSIO GENE THERAPIES INC	114,950	$300K	0.44%
4497	FOSLFOSSIL GROUP INC	24,100	$299K	0.44%	Put
4498	—GREENSKY INC	48,332	$299K	0.44%
4499	—DONNELLEY R R & SONS CO	73,600	$299K	0.44%	Put
4500	ALDXALDEYRA THERAPEUTICS INC	25,100	$298K	0.44%	Call

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