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
4601	SASEABRIDGE GOLD INC	17,000	$275K	0.41%	Put
4602	NVDANVIDIA CORPORATION	514,700	$275K	0.41%	Call
4603	BXCBLUELINX HLDGS INC	6,986	$274K	0.41%
4604	ARRYARRAY TECHNOLOGIES INC	9,200	$274K	0.41%	Call
4605	PETSPETMED EXPRESS INC	7,790	$274K	0.41%
4606	OTISOTIS WORLDWIDE CORP	4,000	$274K	0.41%	Put
4607	SAFESAFEHOLD INC	3,910	$274K	0.41%
4608	COLLCOLLEGIUM PHARMACEUTICAL INC	11,500	$273K	0.40%	Call
4609	—ESSEX PPTY TR INC	1,000	$272K	0.40%	Call
4610	GTESGATES INDUSTRIAL CORPRATIN P	1,700	$272K	0.40%	Call
4611	CHDCHURCH & DWIGHT INC	3,100	$271K	0.40%	Put
4612	—GEMINI THERAPEUTICS INC	19,999	$271K	0.40%
4613	—UGI CORP NEW	6,600	$271K	0.40%	Put
4614	—PLURISTEM THERAPEUTICS INC	56,810	$271K	0.40%
4615	BLBLACKLINE INC	2,500	$271K	0.40%	Call
4616	A4SAMERIPRISE FINL INC	1,164	$271K	0.40%
4617	SXCSUNCOKE ENERGY INC	38,500	$270K	0.40%	Call
4618	—OUSTER INC	31,600	$269K	0.40%	Put
4619	—THOMA BRAVO ADVANTAGE	25,700	$269K	0.40%	Call
4620	LADRLADDER CAP CORP	22,800	$269K	0.40%	Put
4621	MCOMOODYS CORP	900	$269K	0.40%	Call
4622	—STARBOARD VALUE ACQUISITN CO	27,029	$268K	0.40%
4623	—ANTARES PHARMA INC	65,100	$268K	0.40%	Put
4624	ABCLABCELLERA BIOLOGICS INC	7,900	$268K	0.40%	Call
4625	AAOIAPPLIED OPTOELECTRONICS INC	32,083	$268K	0.40%
4626	HIIHUNTINGTON INGALLS INDS INC	1,300	$268K	0.40%	Put
4627	GELGENESIS ENERGY L P	28,700	$268K	0.40%	Put
4628	IDNINTELLICHECK INC	32,000	$268K	0.40%	Call
4629	ANABANAPTYSBIO INC	12,420	$268K	0.40%
4630	MSCIMSCI INC	636	$267K	0.40%
4631	—GREENSKY INC	43,100	$267K	0.40%	Put
4632	FAIFIRST TR EXCHANGE-TRADED FD	11,800	$266K	0.39%	Call
4633	IRWDIRONWOOD PHARMACEUTICALS INC	23,800	$266K	0.39%	Put
4634	—RMG ACQUISITION CORP II	26,522	$266K	0.39%
4635	—DONNELLEY R R & SONS CO	65,400	$266K	0.39%	Call
4636	XELXCEL ENERGY INC	4,000	$266K	0.39%	Put
4637	MGRCMCGRATH RENTCORP	3,300	$266K	0.39%	Call
4638	OZKBANK OZK	6,500	$266K	0.39%	Call
4639	LPXLOUISIANA PAC CORP	4,800	$266K	0.39%	Put
4640	GROWU S GLOBAL INVS INC	37,941	$265K	0.39%
4641	MGYMAGNOLIA OIL & GAS CORP	23,100	$265K	0.39%	Call
4642	VVNTVIVINT SMART HOME INC	18,495	$265K	0.39%
4643	—NAVIOS MARITIME HOLDINGS INC	30,200	$265K	0.39%	Call
4644	FQIDIGITAL RLTY TR INC	1,876	$264K	0.39%
4645	GWREGUIDEWIRE SOFTWARE INC	2,600	$264K	0.39%	Put
4646	—OSISKO GOLD ROYALTIES LTD	24,000	$264K	0.39%	Call
4647	—CHIMERA INVT CORP	20,700	$263K	0.39%	Put
4648	CMRXEURCHIMERIX INC	27,287	$263K	0.39%
4649	CARSCARS COM INC	20,300	$263K	0.39%	Put
4650	—SCULPTOR CAP MGMT	12,000	$263K	0.39%	Put
4651	KFRCKFORCE INC	4,900	$263K	0.39%	Call
4652	ZZILLOW GROUP INC	2,000	$263K	0.39%	Put
4653	UANCVR PARTNERS LP	6,500	$262K	0.39%	Call
4654	WTTRSELECT ENERGY SVCS INC	52,600	$262K	0.39%	Call
4655	CRBPEURCORBUS PHARMACEUTICALS HLDGS	132,676	$261K	0.39%
4656	PNTGPENNANT GROUP INC	5,700	$261K	0.39%	Call
4657	BTUPEABODY ENGR CORP	85,375	$261K	0.39%
4658	—U S GLOBAL INVS INC	37,300	$260K	0.39%	Call
4659	VLYVALLEY NATL BANCORP	18,900	$260K	0.39%	Put
4660	LCTXLINEAGE CELL THERAPEUTICS IN	110,800	$260K	0.39%	Call
4661	—WORLD WRESTLING ENTMT INC	4,800	$260K	0.39%	Put
4662	GEVOGEVO INC	26,500	$260K	0.39%	Call
4663	—SIFY TECHNOLOGIES LTD	73,600	$260K	0.39%	Put
4664	CAPLCROSSAMERICA PARTNERS LP	1,400	$260K	0.39%	Call
4665	AXNX*AXONICS MODULATION TECHNOLOG	4,324	$259K	0.38%
4666	CBRLCRACKER BARREL OLD CTRY STOR	1,500	$259K	0.38%	Put
4667	WIMIWIMI HOLOGRAM CLOUD INC	39,300	$259K	0.38%	Call
4668	HTEURHERSHA HOSPITALITY TR	24,429	$258K	0.38%
4669	—ATLAS CORP	18,900	$258K	0.38%	Put
4670	IVPEFISHARES INC	10,400	$258K	0.38%	Put
4671	MREOMEREO BIOPHARMA GROUP PLC	76,500	$258K	0.38%	Call
4672	SBLKSTAR BULK CARRIERS CORP.	17,600	$258K	0.38%	Put
4673	NOGNORTHERN OIL AND GAS INC MN	21,351	$258K	0.38%
4674	DBAINVESCO DB COMMDY INDX TRCK	15,500	$257K	0.38%	Put
4675	HCATHEALTH CATALYST INC	5,500	$257K	0.38%	Call
4676	USACUSA COMPRESSION PARTNERS LP	16,800	$257K	0.38%	Put
4677	AMRXAMNEAL PHARMACEUTICALS INC	38,200	$257K	0.38%	Call
4678	—ONTRAK INC	7,900	$257K	0.38%	Put
4679	—PENNSYLVANIA REAL ESTATE INV	134,050	$257K	0.38%
4680	TREELENDINGTREE INC NEW	1,200	$256K	0.38%	Put
4681	OHIOMEGA HEALTHCARE INVS INC	7,000	$256K	0.38%	Put
4682	—CURO GROUP HOLDINGS CORP	17,500	$255K	0.38%	Put
4683	—TUFIN SOFTWARE TECHNOLOGIE	24,300	$255K	0.38%	Call
4684	—COVETRUS INC	8,500	$255K	0.38%	Put
4685	BCLIEURBRAINSTORM CELL THERAPEUTICS	66,512	$255K	0.38%
4686	—AMERICA FIRST MULTIFAMILY IN	45,926	$254K	0.38%
4687	BSBRBANCO SANTANDER BRASIL S A	3,600	$254K	0.38%	Call
4688	LEALEAR CORP	1,400	$254K	0.38%	Put
4689	PVACUSDPENN VA CORP	18,933	$254K	0.38%
4690	HYFMHYDROFARM HLDGS GROUP INC	4,189	$253K	0.37%
4691	VITLVITAL FARMS INC	11,600	$253K	0.37%	Put
4692	CVICVR ENERGY INC	13,200	$253K	0.37%	Put
4693	—CF FIN ACQUISITION CORP III	25,300	$253K	0.37%	Put
4694	—DSP GROUP INC	17,773	$253K	0.37%
4695	—ALLAKOS INC	2,200	$253K	0.37%	Put
4696	—CALITHERA BIOSCIENCES INC	104,049	$252K	0.37%
4697	—FLOTEK INDS INC DEL	150,000	$252K	0.37%	Put
4698	DAOYOUDAO INC	10,600	$252K	0.37%	Put
4699	SL2SLEEP NUMBER CORP	1,754	$252K	0.37%
4700	—TYME TECHNOLOGIES INC	141,800	$252K	0.37%	Call

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