GROUP ONE TRADING LLC Q4 2018 Filing

Filed February 6, 2019

Portfolio Value

$11.5M

Holdings

4,844

Report Date

Q4 2018

Filing Type

13F-HR

All Holdings (4,844 positions)

#	Stock	Shares	Value	% Portfolio	Type
3601	—ALDER BIOPHARMACEUTICALS INC	4,900	$50K	0.43%	Put
3602	—2U INC	1,000	$50K	0.43%	Call
3603	—BONANZA CREEK ENERGY INC	2,403	$50K	0.43%
3604	HANHAWAIIAN HOLDINGS INC	1,858	$49K	0.42%
3605	—KALA PHARMACEUTICALS INC	10,000	$49K	0.42%	Call
3606	—CBL & ASSOC PPTYS INC	25,700	$49K	0.42%	Call
3607	—NAM TAI PPTY INC	5,608	$49K	0.42%
3608	—WESTPORT FUEL SYSTEMS INC	37,200	$49K	0.42%	Put
3609	GEGGEO GROUP INC NEW	2,480	$49K	0.42%
3610	—BRASKEM S A	2,000	$49K	0.42%	Put
3611	—TAILORED BRANDS INC	3,558	$49K	0.42%
3612	ULTAULTA BEAUTY INC	200	$49K	0.42%	Put
3613	CLWCLEARWATER PAPER CORP	2,000	$49K	0.42%	Call
3614	CPGCRESCENT PT ENERGY CORP	15,900	$48K	0.42%
3615	GSMFERROGLOBE PLC	30,300	$48K	0.42%	Call
3616	DXCMDEXCOM INC	400	$48K	0.42%	Put
3617	WMKWEIS MKTS INC	3,000	$48K	0.42%	Put
3618	—SHUTTERFLY INC	1,200	$48K	0.42%	Put
3619	XNETXUNLEI LTD	14,000	$48K	0.42%	Put
3620	—AETERNA ZENTARIS INC	16,200	$48K	0.42%	Call
3621	—ABM INDS INC	1,500	$48K	0.42%	Put
3622	IMGIAMGOLD CORP	12,937	$48K	0.42%
3623	BG3BIG 5 SPORTING GOODS CORP	18,016	$47K	0.41%
3624	AMTAMERICAN TOWER CORP NEW	300	$47K	0.41%	Call
3625	ULUNILEVER PLC	900	$47K	0.41%	Call
3626	PAAPLAINS ALL AMERN PIPELINE L	2,336	$47K	0.41%
3627	AVNTNAVIENT CORPORATION	5,300	$47K	0.41%	Call
3628	PVLPERMIANVILLE RTY TR	24,900	$47K	0.41%
3629	—CATALYST BIOSCIENCES INC	6,000	$47K	0.41%	Call
3630	—ADTALEM GLOBAL ED INC	1,000	$47K	0.41%	Put
3631	—DAVIDSTEA INC	39,500	$47K	0.41%	Put
3632	—AVALARA INC	1,500	$47K	0.41%	Call
3633	YB4PSAVARA INC	6,172	$47K	0.41%
3634	WKWORKIVA INC	1,317	$47K	0.41%
3635	—AXOVANT SCIENCES LTD	46,100	$46K	0.40%	Put
3636	—BASIC ENERGY SVCS INC NEW	12,000	$46K	0.40%	Call
3637	LPLALPL FINL HLDGS INC	760	$46K	0.40%
3638	HLITHARMONIC INC	9,700	$46K	0.40%	Call
3639	XEJACCURAY INC	13,536	$46K	0.40%
3640	NINISOURCE INC	1,800	$46K	0.40%	Call
3641	—PROTEOSTASIS THERAPEUTICS IN	14,100	$46K	0.40%	Put
3642	TXTTEXTRON INC	100	$46K	0.40%	Call
3643	LIVNLIVANOVA PLC	500	$46K	0.40%	Put
3644	—HIGHPOINT RES CORP	18,658	$46K	0.40%
3645	UCBUNITED CMNTY BKS BLAIRSVLE G	2,153	$46K	0.40%
3646	AKBAAKEBIA THERAPEUTICS INC	8,142	$45K	0.39%
3647	RIOTRIOT BLOCKCHAIN INC	29,800	$45K	0.39%	Put
3648	—DEAN FOODS CO NEW	11,800	$45K	0.39%	Call
3649	BLDTOPBUILD CORP	1,000	$45K	0.39%	Put
3650	BLDTOPBUILD CORP	1,000	$45K	0.39%	Call
3651	BHRBRAEMAR HOTELS & RESORTS INC	5,000	$45K	0.39%	Call
3652	UPWKUPWORK INC	2,500	$45K	0.39%	Call
3653	SPPIUSDSPECTRUM PHARMACEUTICALS INC	5,192	$45K	0.39%
3654	TREELENDINGTREE INC NEW	200	$44K	0.38%	Put
3655	—NEVSUN RES LTD	10,000	$44K	0.38%	Put
3656	—AMERICAN MIDSTREAM PARTNERS	14,560	$44K	0.38%
3657	BENFRANKLIN RES INC	1,500	$44K	0.38%	Call
3658	—WESTPORT FUEL SYSTEMS INC	33,200	$44K	0.38%	Call
3659	—HORNBECK OFFSHORE SVCS INC N	30,800	$44K	0.38%	Call
3660	—SOTHEBYS	1,100	$44K	0.38%	Put
3661	SKYWSKYWEST INC	1,000	$44K	0.38%	Put
3662	SNDSMART SAND INC	20,000	$44K	0.38%	Put
3663	EATBRINKER INTL INC	1,000	$44K	0.38%	Put
3664	—CABOT MICROELECTRONICS CORP	465	$44K	0.38%
3665	—SESEN BIO INC	31,300	$44K	0.38%	Call
3666	—ANTERO MIDSTREAM PARTNERS LP	2,000	$43K	0.37%	Call
3667	EGANEGAIN CORP	6,599	$43K	0.37%
3668	AEISADVANCED ENERGY INDS	1,000	$43K	0.37%	Put
3669	—ANTERO MIDSTREAM PARTNERS LP	2,000	$43K	0.37%	Put
3670	OCULOCULAR THERAPEUTIX INC	10,827	$43K	0.37%
3671	UBSUBS GROUP AG	3,500	$43K	0.37%	Call
3672	—GMS INC	2,900	$43K	0.37%	Call
3673	EZPWEZCORP INC	5,600	$43K	0.37%	Put
3674	VRAVERA BRADLEY INC	5,000	$43K	0.37%	Call
3675	—HUDSON LTD	2,500	$43K	0.37%
3676	—RYDER SYS INC	900	$43K	0.37%	Put
3677	—FARFETCH LTD	2,400	$43K	0.37%	Call
3678	—EBIX INC	1,000	$43K	0.37%	Call
3679	—OCWEN FINL CORP	31,600	$42K	0.36%	Call
3680	—CERNER CORP	800	$42K	0.36%	Put
3681	MMLPMARTIN MIDSTREAM PRTNRS L P	4,100	$42K	0.36%	Call
3682	—GTX INC DEL	53,800	$42K	0.36%	Call
3683	—SCORPIO TANKERS INC	24,000	$42K	0.36%	Put
3684	—MIRATI THERAPEUTICS INC	1,000	$42K	0.36%	Call
3685	—EXTRACTION OIL AND GAS INC	9,800	$42K	0.36%	Call
3686	—CRAFT BREW ALLIANCE INC	2,900	$42K	0.36%	Call
3687	—GAIN CAP HLDGS INC	6,757	$42K	0.36%
3688	AZTABROOKS AUTOMATION INC	1,604	$42K	0.36%
3689	PPCPILGRIMS PRIDE CORP NEW	2,616	$41K	0.36%
3690	FNFABRINET	800	$41K	0.36%	Call
3691	—ENABLE MIDSTREAM PARTNERS LP	3,000	$41K	0.36%	Put
3692	GSATGLOBALSTAR INC	63,800	$41K	0.36%	Put
3693	WTIW & T OFFSHORE INC	9,900	$41K	0.36%	Call
3694	—VITAMIN SHOPPE INC	8,617	$41K	0.36%
3695	OPYOPPENHEIMER HLDGS INC	1,600	$41K	0.36%	Call
3696	SSNCSS&C TECHNOLOGIES HLDGS INC	918	$41K	0.36%
3697	OKTAOKTA INC	639	$41K	0.36%
3698	—ETFIS SER TR I	8,000	$40K	0.35%	Call
3699	MGPIMGP INGREDIENTS INC NEW	698	$40K	0.35%
3700	—SORL AUTO PTS INC	21,072	$40K	0.35%

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