GROUP ONE TRADING LLC Q1 2018 Filing

Filed May 11, 2018

Portfolio Value

$10.5M

Holdings

4,806

Report Date

Q1 2018

Filing Type

13F-HR

All Holdings (4,806 positions)

#	Stock	Shares	Value	% Portfolio	Type
3801	—WESTROCK CO	600	$39K	0.37%	Call
3802	KSUEURKANSAS CITY SOUTHERN	357	$39K	0.37%
3803	—IMPAX LABORATORIES INC	2,000	$39K	0.37%	Call
3804	—PDL BIOPHARMA INC	13,100	$39K	0.37%	Put
3805	—DIPLOMAT PHARMACY INC	1,935	$39K	0.37%
3806	RCKTROCKET PHARMACEUTICALS INC	2,000	$38K	0.36%	Call
3807	IAUUSDISHARES GOLD TRUST	3,008	$38K	0.36%
3808	SGRYSURGERY PARTNERS INC	2,200	$38K	0.36%	Put
3809	HHYATT HOTELS CORP	500	$38K	0.36%	Call
3810	—SEADRILL PARTNERS LLC	13,818	$38K	0.36%
3811	PRAAPRA GROUP INC	1,000	$38K	0.36%	Call
3812	KLICKULICKE & SOFFA INDS INC	1,500	$38K	0.36%	Call
3813	AXSMAXSOME THERAPEUTICS INC	15,600	$38K	0.36%	Call
3814	AVTABLUCORA INC	1,526	$38K	0.36%
3815	SKYWSKYWEST INC	700	$38K	0.36%	Call
3816	—VONAGE HLDGS CORP	3,609	$38K	0.36%
3817	ATENA10 NETWORKS INC	6,279	$37K	0.35%
3818	OIIOCEANEERING INTL INC	2,000	$37K	0.35%	Put
3819	LPXLOUISIANA PAC CORP	1,300	$37K	0.35%	Put
3820	—TRANSCANADA CORP	900	$37K	0.35%	Put
3821	—YRC WORLDWIDE INC	4,200	$37K	0.35%	Call
3822	—STORE CAP CORP	1,500	$37K	0.35%	Call
3823	—FINISH LINE INC	2,700	$37K	0.35%	Put
3824	—MOBILEIRON INC	7,532	$37K	0.35%
3825	DHTDHT HOLDINGS INC	10,900	$37K	0.35%	Call
3826	NKENIKE INC	562	$37K	0.35%
3827	TRPTRANSCANADA CORP	900	$37K	0.35%
3828	EQREQUITY RESIDENTIAL	600	$37K	0.35%	Put
3829	—FORUM ENERGY TECHNOLOGIES IN	3,400	$37K	0.35%	Put
3830	—EPIZYME INC	2,100	$37K	0.35%	Call
3831	MXLMAXLINEAR INC	1,600	$36K	0.34%	Call
3832	LFCUSDCHINA LIFE INS CO LTD	2,600	$36K	0.34%
3833	USFDUS FOODS HLDG CORP	1,100	$36K	0.34%	Put
3834	—NOBILIS HEALTH CORP	22,000	$36K	0.34%	Put
3835	—BRF SA	5,200	$36K	0.34%	Call
3836	RUNSUNRUN INC	4,000	$36K	0.34%	Call
3837	—SHILOH INDS INC	4,089	$36K	0.34%
3838	—CHIMERIX INC	7,000	$36K	0.34%	Put
3839	BLDRBUILDERS FIRSTSOURCE INC	1,800	$36K	0.34%	Call
3840	—PROTEOSTASIS THERAPEUTICS IN	7,600	$36K	0.34%	Put
3841	—TRAVELCENTERS AMER LLC	10,000	$36K	0.34%	Call
3842	TEFOFTELEFONICA S A	3,600	$36K	0.34%	Put
3843	—ASHFORD HOSPITALITY PRIME IN	3,699	$36K	0.34%
3844	LULULULULEMON ATHLETICA INC	400	$36K	0.34%	Put
3845	CCCHEMOURS CO	744	$36K	0.34%
3846	—ISTAR INC	3,400	$35K	0.33%	Put
3847	PUMPPROPETRO HLDG CORP	2,200	$35K	0.33%	Put
3848	—CONATUS PHARMACEUTICALS INC	6,000	$35K	0.33%	Put
3849	UCTTULTRA CLEAN HLDGS INC	1,800	$35K	0.33%	Put
3850	—POTBELLY CORP	2,900	$35K	0.33%	Call
3851	7SUSUMMIT MATLS INC	1,158	$35K	0.33%
3852	ARAYACCURAY INC	7,000	$35K	0.33%	Call
3853	FNFFIDELITY NATIONAL FINANCIAL	870	$35K	0.33%
3854	—HORTONWORKS INC	1,700	$35K	0.33%	Put
3855	—CANADIAN PAC RY LTD	200	$35K	0.33%	Call
3856	—COOPER TIRE & RUBR CO	1,200	$35K	0.33%	Call
3857	—ARMOUR RESIDENTIAL REIT INC	1,500	$35K	0.33%	Put
3858	—U S GLOBAL INVS INC	13,800	$35K	0.33%	Call
3859	SSPSCRIPPS E W CO OHIO	2,946	$35K	0.33%
3860	—SUPERIOR ENERGY SVCS INC	4,100	$35K	0.33%	Put
3861	CHGGCHEGG INC	1,700	$35K	0.33%	Put
3862	PODDINSULET CORP	399	$35K	0.33%
3863	—GOLAR LNG PARTNERS LP	2,000	$34K	0.32%	Put
3864	—MEET GROUP INC	16,500	$34K	0.32%	Call
3865	—ENZO BIOCHEM INC	6,200	$34K	0.32%	Put
3866	HGVHILTON GRAND VACATIONS INC	799	$34K	0.32%
3867	RBBNRIBBON COMMUNICATIONS INC	6,591	$34K	0.32%
3868	CRBPCORBUS PHARMACEUTICALS HLDGS	5,600	$34K	0.32%	Call
3869	—EXTRACTION OIL AND GAS INC	3,000	$34K	0.32%	Call
3870	ACLSAXCELIS TECHNOLOGIES INC	1,400	$34K	0.32%	Call
3871	—RPX CORP	3,200	$34K	0.32%	Put
3872	ASYSAMTECH SYS INC	4,590	$34K	0.32%
3873	—TETRAPHASE PHARMACEUTICALS I	11,000	$34K	0.32%	Put
3874	—FERRELLGAS PARTNERS L.P.	11,000	$34K	0.32%	Put
3875	—AEROHIVE NETWORKS INC	8,300	$34K	0.32%	Call
3876	ECLECOLAB INC	245	$34K	0.32%
3877	PIIPOLARIS INDS INC	300	$34K	0.32%	Put
3878	—COMPANHIA SIDERURGICA NACION	12,800	$34K	0.32%	Put
3879	USACUSA COMPRESSION PARTNERS LP	2,000	$34K	0.32%	Put
3880	IACIEURIAC INTERACTIVECORP	217	$34K	0.32%
3881	—HIGHWOODS PPTYS INC	7,700	$34K	0.32%	Call
3882	—DYNEGY INC NEW DEL	2,447	$33K	0.31%
3883	SRISTONERIDGE INC	1,208	$33K	0.31%
3884	MTWMANITOWOC CO INC	1,168	$33K	0.31%
3885	CDNSCADENCE DESIGN SYSTEM INC	900	$33K	0.31%	Call
3886	STRLSTERLING CONSTRUCTION CO INC	2,915	$33K	0.31%
3887	MEOHMETHANEX CORP	547	$33K	0.31%
3888	SXCPUSDSUNCOKE ENERGY PARTNERS L P	1,826	$33K	0.31%
3889	BTOB2GOLD CORP	11,960	$33K	0.31%
3890	BAXBAXTER INTL INC	500	$33K	0.31%	Put
3891	—SPIRIT AEROSYSTEMS HLDGS INC	400	$33K	0.31%	Call
3892	—EMERGE ENERGY SVCS LP	5,400	$33K	0.31%	Put
3893	ARCOARCOS DORADOS HOLDINGS INC	3,609	$33K	0.31%
3894	CPGCRESCENT PT ENERGY CORP	4,800	$33K	0.31%
3895	VCVISTEON CORP	300	$33K	0.31%	Put
3896	—INSTEEL INDUSTRIES INC	1,200	$33K	0.31%	Put
3897	PUMPPROPETRO HLDG CORP	2,000	$32K	0.30%	Call
3898	—DIEBOLD NXDF INC	2,100	$32K	0.30%	Put
3899	IRWDIRONWOOD PHARMACEUTICALS INC	2,100	$32K	0.30%	Put
3900	—CVR REFNG LP	2,468	$32K	0.30%

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