GROUP ONE TRADING LLC Q2 2019 Filing

Filed August 9, 2019

Portfolio Value

$11.1M

Holdings

4,933

Report Date

Q2 2019

Filing Type

13F-HR

All Holdings (4,933 positions)

#	Stock	Shares	Value	% Portfolio	Type
3901	REZIRESIDEO TECHNOLOGIES INC	1,814	$40K	0.36%
3902	—KINDRED BIOSCIENCES INC	4,800	$40K	0.36%
3903	SAILEURSAILPOINT TECHNLGIES HLDGS I	2,010	$40K	0.36%
3904	TENBTENABLE HLDGS INC	1,402	$40K	0.36%
3905	KEXKIRBY CORP	500	$40K	0.36%	Put
3906	LPI1EURLAREDO PETROLEUM INC	13,934	$40K	0.36%
3907	—TYME TECHNOLOGIES INC	33,019	$40K	0.36%
3908	HEIHEICO CORP NEW	300	$40K	0.36%	Put
3909	AMSCAMERICAN SUPERCONDUCTOR CORP	4,200	$39K	0.35%	Put
3910	SMGSCOTTS MIRACLE GRO CO	400	$39K	0.35%	Put
3911	—TOCAGEN INC	5,900	$39K	0.35%	Call
3912	VRSUSDVERSO CORP	2,050	$39K	0.35%
3913	BANCBANC OF CALIFORNIA INC	2,800	$39K	0.35%	Call
3914	GNTXGENTEX CORP	1,600	$39K	0.35%	Call
3915	—MUSTANG BIO INC	10,500	$39K	0.35%	Put
3916	NDLSNOODLES & CO	5,000	$39K	0.35%	Call
3917	CIACITIZENS INC	5,400	$39K	0.35%	Call
3918	SCVLSHOE CARNIVAL INC	1,400	$39K	0.35%	Put
3919	AMRXAMNEAL PHARMACEUTICALS INC	5,500	$39K	0.35%	Put
3920	SEISOLARIS OILFIELD INFRSTR INC	2,634	$39K	0.35%
3921	—CLEARSIDE BIOMEDICAL INC	40,100	$39K	0.35%	Call
3922	BOOTBOOT BARN HLDGS INC	1,100	$39K	0.35%	Call
3923	—LIPOCINE INC NEW	20,000	$39K	0.35%	Put
3924	NTAPNETAPP INC	618	$38K	0.34%
3925	—AMPHENOL CORP NEW	400	$38K	0.34%	Call
3926	BRBROADRIDGE FINL SOLUTIONS IN	300	$38K	0.34%	Call
3927	—ROCKWELL MED INC	12,668	$38K	0.34%
3928	—DEL TACO RESTAURANTS INC	3,000	$38K	0.34%
3929	NPKINEWPARK RES INC	5,152	$38K	0.34%
3930	GLREGREENLIGHT CAPITAL RE LTD	4,500	$38K	0.34%	Put
3931	CAASCHINA AUTOMOTIVE SYS INC	16,600	$38K	0.34%	Put
3932	TKTEEKAY CORPORATION	10,907	$38K	0.34%
3933	CDEVEURCENTENNIAL RESOURCE DEV INC	5,035	$38K	0.34%
3934	BZHBEAZER HOMES USA INC	4,000	$38K	0.34%	Put
3935	—NORTHSTAR REALTY EUROPE CORP	2,300	$38K	0.34%	Put
3936	REIRING ENERGY INC	11,500	$37K	0.33%	Put
3937	KMTKENNAMETAL INC	1,000	$37K	0.33%	Put
3938	CPRTCOPART INC	500	$37K	0.33%	Call
3939	—VICAL INC	43,900	$37K	0.33%	Call
3940	EAFEURGRAFTECH INTL LTD	3,218	$37K	0.33%
3941	AVLRUSDAVALARA INC	506	$37K	0.33%
3942	—ELECTRONICS FOR IMAGING INC	1,000	$37K	0.33%	Call
3943	—FLOTEK INDS INC DEL	11,300	$37K	0.33%	Put
3944	—SESEN BIO INC	24,800	$37K	0.33%	Call
3945	CYTKCYTOKINETICS INC	3,315	$37K	0.33%
3946	—AIMMUNE THERAPEUTICS INC	1,800	$37K	0.33%	Call
3947	BCCBOISE CASCADE CO DEL	1,300	$37K	0.33%
3948	—ACELRX PHARMACEUTICALS INC	14,772	$37K	0.33%
3949	KYNKAYNE ANDERSN MLP MIDS INVT	2,400	$37K	0.33%
3950	—TREVENA INC	34,500	$36K	0.33%	Call
3951	—TIVITY HEALTH INC	2,200	$36K	0.33%	Call
3952	—BLACKSTONE MTG TR INC	1,000	$36K	0.33%	Put
3953	SITCUSDSITE CENTERS CORP	2,692	$36K	0.33%
3954	COLLCOLLEGIUM PHARMACEUTICAL INC	2,700	$36K	0.33%	Call
3955	AMXAMERICA MOVIL SAB DE CV	2,500	$36K	0.33%	Call
3956	CDWCDW CORP	320	$36K	0.33%
3957	TSMTAIWAN SEMICONDUCTOR MFG LTD	913	$36K	0.33%
3958	—ALCENTRA CAP CORP	4,300	$36K	0.33%	Call
3959	—CHIMERIX INC	8,300	$36K	0.33%	Call
3960	—T2 BIOSYSTEMS INC	21,651	$36K	0.33%
3961	—LA JOLLA PHARMACEUTICAL CO	3,900	$36K	0.33%	Put
3962	—NATUS MEDICAL INC DEL	1,400	$36K	0.33%	Call
3963	MTWMANITOWOC CO INC	2,000	$36K	0.33%	Call
3964	WMKWEIS MKTS INC	1,000	$36K	0.33%	Put
3965	—WESTPORT FUEL SYSTEMS INC	12,900	$35K	0.32%	Call
3966	EXKENDEAVOUR SILVER CORP	17,300	$35K	0.32%	Call
3967	—ASSERTIO THERAPEUTICS INC	10,000	$35K	0.32%	Put
3968	RICKRCI HOSPITALITY HLDGS INC	2,000	$35K	0.32%	Put
3969	—FORTRESS TRANS INFRST INVS L	2,300	$35K	0.32%	Call
3970	KFYKORN FERRY	864	$35K	0.32%
3971	—CURIS INC	18,900	$35K	0.32%	Put
3972	CLSDUSDCLEARSIDE BIOMEDICAL INC	36,312	$35K	0.32%
3973	—VENATOR MATLS PLC	6,700	$35K	0.32%	Put
3974	ABRARBOR RLTY TR INC	2,900	$35K	0.32%	Call
3975	LFVNLIFEVANTAGE CORP	2,701	$35K	0.32%
3976	IDTIDT CORP	3,700	$35K	0.32%	Call
3977	KMXCARMAX INC	402	$35K	0.32%
3978	TVGRUPO TELEVISA SA	4,100	$35K	0.32%	Call
3979	—DBV TECHNOLOGIES S A	4,200	$35K	0.32%	Call
3980	VERIVERITONE INC	4,200	$35K	0.32%	Call
3981	AMCRAMCOR PLC	3,031	$35K	0.32%
3982	OMEXODYSSEY MARINE EXPLORATION I	6,066	$35K	0.32%
3983	—ABEONA THERAPEUTICS INC	7,300	$35K	0.32%	Call
3984	SCCOSOUTHERN COPPER CORP	896	$35K	0.32%
3985	—PCM INC	1,000	$35K	0.32%	Put
3986	BENFRANKLIN RES INC	1,000	$35K	0.32%	Put
3987	VOYAVOYA FINL INC	626	$35K	0.32%
3988	MIMEMIMECAST LTD	737	$34K	0.31%
3989	KEXKIRBY CORP	431	$34K	0.31%
3990	—LA JOLLA PHARMACEUTICAL CO	3,625	$34K	0.31%
3991	—CONSTELLIUM NV	3,400	$34K	0.31%	Put
3992	U6ZURANIUM ENERGY CORP	24,533	$34K	0.31%
3993	NTWKNETSOL TECHNOLOGIES INC	5,900	$33K	0.30%	Call
3994	—SECUREWORKS CORP	2,500	$33K	0.30%	Put
3995	—SUNESIS PHARMACEUTICALS INC	44,981	$33K	0.30%
3996	—LIONS GATE ENTMNT CORP	2,700	$33K	0.30%	Put
3997	HLITHARMONIC INC	6,000	$33K	0.30%	Put
3998	—REXNORD CORP NEW	1,100	$33K	0.30%	Put
3999	—CHEETAH MOBILE INC	9,200	$33K	0.30%	Put
4000	FHIFEDERATED INVS INC PA	1,000	$33K	0.30%	Call

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