GROUP ONE TRADING LLC Q2 2021 Filing

Filed August 10, 2021

Portfolio Value

$82.9M

Holdings

8,103

Report Date

Q2 2021

Filing Type

13F-HR

All Holdings (8,103 positions)

#	Stock	Shares	Value	% Portfolio	Type
601	NXENEXGEN ENERGY LTD	146,479	$601K	0.72%
602	—PERDOCEO ED CORP	49,000	$601K	0.72%	Call
603	PLXPROTALIX BIOTHERAPEUTICS INC	313,900	$600K	0.72%	Put
604	RILYB. RILEY FINANCIAL INC	7,947	$600K	0.72%
605	—TRILLIUM THERAPEUTICS INC	61,800	$599K	0.72%	Put
606	HCCWARRIOR MET COAL INC	34,800	$599K	0.72%	Put
607	CMICUMMINS INC	2,456	$599K	0.72%
608	—PAVMED INC	93,562	$599K	0.72%
609	TRUPTRUPANION INC	5,200	$599K	0.72%	Call
610	—EVOFEM BIOSCIENCES INC	529,650	$599K	0.72%
611	TSTENARIS S A	27,300	$598K	0.72%	Call
612	DIODDIODES INC	7,485	$597K	0.72%
613	IMAXIMAX CORP	27,700	$596K	0.72%	Call
614	—ZYNERBA PHARMACEUTICALS INC	112,512	$595K	0.72%
615	—AETERNA ZENTARIS INC	676,900	$594K	0.72%	Call
616	ADMAADMA BIOLOGICS INC	371,426	$594K	0.72%
617	CALMCAL MAINE FOODS INC	16,400	$594K	0.72%	Put
618	OSWONESPAWORLD HOLDINGS LIMITED	61,200	$593K	0.72%	Call
619	—SPORTSMANS WHSE HLDGS INC	33,300	$592K	0.71%	Put
620	VFCV F CORP	7,200	$591K	0.71%	Put
621	EBEVENTBRITE INC	31,100	$591K	0.71%	Put
622	—RENESOLA LTD	64,900	$591K	0.71%	Put
623	MRSHMARSH & MCLENNAN COS INC	4,200	$591K	0.71%	Put
624	IBRXIMMUNITYBIO INC	41,300	$590K	0.71%	Put
625	DVAXDYNAVAX TECHNOLOGIES CORP	59,934	$590K	0.71%
626	—PROTERRA INC	34,500	$590K	0.71%	Put
627	MSTRMICROSTRATEGY INC	887,500	$590K	0.71%	Call
628	—QELL ACQUISITION CORP	59,182	$589K	0.71%
629	ELFE L F BEAUTY INC	21,700	$589K	0.71%	Call
630	TSTENARIS S A	26,900	$589K	0.71%	Put
631	—GREENSKY INC	105,900	$588K	0.71%	Call
632	—INTRUSION INC	38,000	$586K	0.71%	Call
633	—AMPIO PHARMACEUTICALS INC	350,202	$585K	0.71%
634	CHEFCHEFS WHSE INC	18,342	$584K	0.70%
635	—OWENS & MINOR INC NEW	13,800	$584K	0.70%	Put
636	—CALLAWAY GOLF CO	17,300	$584K	0.70%	Put
637	FOLDAMICUS THERAPEUTICS INC	60,500	$583K	0.70%	Put
638	MSCIMSCI INC	1,093	$583K	0.70%
639	HWKNHAWKINS INC	17,800	$583K	0.70%	Call
640	CSTECAESARSTONE LTD	39,400	$582K	0.70%	Put
641	UFSDOMTAR CORP	10,586	$582K	0.70%
642	—INTERPUBLIC GROUP COS INC	17,900	$582K	0.70%	Call
643	INVHINVITATION HOMES INC	15,600	$582K	0.70%	Put
644	DAKTDAKTRONICS INC	88,200	$581K	0.70%	Call
645	—APEX TECHNOLOGY ACQUISITION	47,400	$581K	0.70%	Put
646	SCSANTANDER CONSUMER USA HLDGS	15,985	$581K	0.70%
647	RGRSTURM RUGER & CO INC	6,456	$581K	0.70%
648	TBCHTURTLE BEACH CORP	18,200	$581K	0.70%	Call
649	—ATLAS AIR WORLDWIDE HLDGS IN	8,500	$579K	0.70%	Call
650	OSISOSI SYSTEMS INC	5,700	$579K	0.70%	Call
651	ZVRAKEMPHARM INC	45,200	$579K	0.70%	Put
652	HMCHONDA MOTOR LTD	18,000	$579K	0.70%	Put
653	PTCPTC INC	4,100	$579K	0.70%	Put
654	ANABANAPTYSBIO INC	22,300	$578K	0.70%	Put
655	INCYINCYTE CORP	6,875	$578K	0.70%
656	CNXCNX RES CORP	42,242	$577K	0.70%
657	RWTREDWOOD TR INC	47,702	$576K	0.69%
658	TRTOOTSIE ROLL INDS INC	16,999	$576K	0.69%
659	ZZILLOW GROUP INC	4,700	$576K	0.69%	Put
660	CRNTCERAGON NETWORKS LTD	152,700	$576K	0.69%	Put
661	CHNGUSDCHANGE HEALTHCARE INC	24,970	$575K	0.69%
662	DMTKQDERMTECH INC	13,841	$575K	0.69%
663	UCTTULTRA CLEAN HLDGS INC	10,700	$575K	0.69%	Call
664	—GOOSEHEAD INS INC	4,500	$573K	0.69%	Call
665	BANCBANC OF CALIFORNIA INC	32,600	$572K	0.69%	Call
666	FRPTFRESHPET INC	3,500	$570K	0.69%	Call
667	—REVLON INC	44,400	$570K	0.69%	Call
668	—ENLINK MIDSTREAM LLC	89,200	$570K	0.69%	Put
669	ARCTARCTURUS THERAPEUTICS HLDGS	16,800	$569K	0.69%	Call
670	TRHCEURTABULA RASA HEALTHCARE INC	11,389	$569K	0.69%
671	GWWGRAINGER W W INC	1,300	$569K	0.69%	Put
672	ATENA10 NETWORKS INC	50,272	$566K	0.68%
673	EATBRINKER INTL INC	9,152	$566K	0.68%
674	—PLURISTEM THERAPEUTICS INC	143,000	$566K	0.68%	Put
675	—NOVAGOLD RES INC	70,700	$566K	0.68%	Put
676	—AQUA METALS INC	188,400	$565K	0.68%	Call
677	TNDMTANDEM DIABETES CARE INC	5,800	$565K	0.68%	Put
678	—GTT COMMUNICATIONS INC	232,400	$565K	0.68%	Put
679	LOOPLOOP INDS INC	45,765	$564K	0.68%
680	SVMSILVERCORP METALS INC	102,800	$564K	0.68%	Put
681	—COMMERCIAL VEH GROUP INC	53,100	$564K	0.68%	Put
682	—LIMELIGHT NETWORKS INC	178,597	$563K	0.68%
683	—KINIKSA PHARMACEUTICALS LTD	40,300	$561K	0.68%	Put
684	AVBAVALONBAY CMNTYS INC	2,685	$560K	0.68%
685	—SILK RD MED INC	11,700	$560K	0.68%	Call
686	—ALEXCO RESOURCE CORP	223,900	$560K	0.68%	Call
687	—GALLAGHER ARTHUR J & CO	4,000	$560K	0.68%	Put
688	FTITECHNIPFMC PLC	61,883	$560K	0.68%
689	—PENNSYLVANIA REAL ESTATE INV	224,400	$559K	0.67%	Put
690	VRSKVERISK ANALYTICS INC	3,200	$559K	0.67%	Call
691	—MUSTANG BIO INC	168,500	$559K	0.67%	Put
692	—YAMANA GOLD INC	132,300	$558K	0.67%	Call
693	—INFRA AND ENERGY ALTRNTIVE I	43,400	$558K	0.67%	Put
694	—EXPEDITORS INTL WASH INC	4,400	$557K	0.67%	Call
695	TRTN-PATRITON INTL LTD	10,625	$556K	0.67%
696	BBWBUILD-A-BEAR WORKSHOP INC	32,100	$556K	0.67%	Put
697	—MR COOPER GROUP INC	16,800	$555K	0.67%	Call
698	PSAPUBLIC STORAGE	1,838	$553K	0.67%
699	FICOFAIR ISAAC CORP	1,100	$553K	0.67%	Put
700	—PACWEST BANCORP DEL	13,400	$552K	0.67%	Call

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