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
5501	PRGSPROGRESS SOFTWARE CORP	2,500	$110K	0.16%	Put
5502	—APOLLO COML REAL EST FIN INC	7,900	$110K	0.16%	Call
5503	VRAYQVIEWRAY INC	24,993	$109K	0.16%
5504	DLBDOLBY LABORATORIES INC	1,100	$109K	0.16%	Call
5505	BRYBERRY CORP	19,852	$109K	0.16%
5506	SLSSELLAS LIFE SCIENCES GROUP I	12,800	$109K	0.16%	Call
5507	MDGLMADRIGAL PHARMACEUTICALS INC	933	$109K	0.16%
5508	MUFGMITSUBISHI UFJ FINL GROUP IN	20,000	$108K	0.16%	Put
5509	—GOLDEN STAR RES LTD CDA	36,700	$108K	0.16%	Call
5510	—CDK GLOBAL INC	2,000	$108K	0.16%	Put
5511	PSNLPERSONALIS INC	4,400	$108K	0.16%	Call
5512	—ROCKWELL MED INC	92,800	$108K	0.16%	Call
5513	MTLSMATERIALISE NV	3,000	$108K	0.16%	Call
5514	—PERFORMANT FINL CORP	50,400	$108K	0.16%	Call
5515	—CONTRAFECT CORP	22,500	$108K	0.16%	Call
5516	VSHVISHAY INTERTECHNOLOGY INC	4,500	$108K	0.16%	Call
5517	DRDDRDGOLD LIMITED	11,437	$108K	0.16%
5518	—QUTOUTIAO INC	47,100	$108K	0.16%	Call
5519	SHOPSHOPIFY INC	97,300	$108K	0.16%	Call
5520	AGXARGAN INC	2,000	$107K	0.16%
5521	—KINIKSA PHARMACEUTICALS LTD	5,800	$107K	0.16%	Put
5522	TVGRUPO TELEVISA SA	12,100	$107K	0.16%	Put
5523	GILGILDAN ACTIVEWEAR INC	3,500	$107K	0.16%	Call
5524	OCGNOCUGEN INC	15,700	$107K	0.16%	Put
5525	CALXCALIX INC	3,100	$107K	0.16%	Put
5526	—OIL STS INTL INC	17,700	$107K	0.16%	Call
5527	ARDXARDELYX INC	16,200	$107K	0.16%	Put
5528	NGLNGL ENERGY PARTNERS LP	51,800	$106K	0.16%	Call
5529	MEDMEDIFAST INC	500	$106K	0.16%	Put
5530	—PEOPLES UNITED FINANCIAL INC	5,900	$106K	0.16%	Put
5531	RITMNEW RESIDENTIAL INVT CORP	9,454	$106K	0.16%
5532	IRWDIRONWOOD PHARMACEUTICALS INC	9,466	$106K	0.16%
5533	—AMERICAN VRTUAL CLOUD TECH I	18,800	$106K	0.16%	Call
5534	—H & E EQUIPMENT SERVICES INC	2,800	$106K	0.16%	Call
5535	—IZEA WORLDWIDE INC	28,200	$106K	0.16%
5536	—ASSEMBLY BIOSCIENCES INC	23,000	$106K	0.16%	Call
5537	FFFUTUREFUEL CORP	7,300	$106K	0.16%	Call
5538	GLYCEURGLYCOMIMETICS INC	35,219	$106K	0.16%
5539	—INTERSECT ENT INC	5,100	$106K	0.16%	Put
5540	BLDTOPBUILD CORP	500	$105K	0.16%	Call
5541	—SYNOVUS FINL CORP	2,300	$105K	0.16%	Put
5542	EGYVAALCO ENERGY INC	46,900	$105K	0.16%	Put
5543	DINDINE BRANDS GLOBAL INC	1,169	$105K	0.16%
5544	—HORIZON ACQUISITION CORPORAT	10,326	$105K	0.16%
5545	—NANOSTRING TECHNOLOGIES INC	1,600	$105K	0.16%	Call
5546	—CALADRIUS BIOSCIENCES INC	54,200	$105K	0.16%	Put
5547	—RIGNET INC	1,200	$105K	0.16%	Call
5548	GDOTGREEN DOT CORP	2,300	$105K	0.16%	Call
5549	—NORTHERN TR CORP	100	$105K	0.16%	Put
5550	VNDAVANDA PHARMACEUTICALS INC	7,000	$105K	0.16%	Call
5551	NHWKHEAT BIOLOGICS INC	14,483	$105K	0.16%
5552	—SOLENO THERAPEUTICS INC	82,300	$104K	0.15%	Call
5553	—MAXEON SOLAR TECHNOLOGIES LT	3,300	$104K	0.15%	Put
5554	NPKINEWPARK RES INC	33,200	$104K	0.15%	Put
5555	CODICOMPASS DIVERSIFIED	4,500	$104K	0.15%	Put
5556	KOPKOPPERS HOLDINGS INC	300	$104K	0.15%	Put
5557	—ENABLE MIDSTREAM PARTNERS LP	16,000	$104K	0.15%	Put
5558	VCTRVICTORY CAP HLDGS INC	4,050	$104K	0.15%
5559	—AKERO THERAPEUTICS INC	3,600	$104K	0.15%	Call
5560	FMCFMC CORP	936	$104K	0.15%
5561	ENTAENANTA PHARMACEUTICALS INC	2,100	$104K	0.15%	Call
5562	SBSAFE BULKERS INC	42,615	$104K	0.15%
5563	—APTINYX INC	34,400	$103K	0.15%	Call
5564	IMMRIMMERSION CORP	10,800	$103K	0.15%	Put
5565	—CYMABAY THERAPEUTICS INC	22,700	$103K	0.15%	Call
5566	XBITXBIOTECH INC	6,000	$103K	0.15%	Put
5567	—TFF PHARMACEUTICALS INC	7,600	$103K	0.15%	Put
5568	AGENEURAGENUS INC	37,441	$102K	0.15%
5569	SPROSPERO THERAPEUTICS INC	6,900	$102K	0.15%	Call
5570	—JAGUAR HEALTH INC	56,704	$102K	0.15%
5571	USPHU S PHYSICAL THERAPY INC	975	$102K	0.15%
5572	WTWISDOMTREE INVTS INC	16,300	$102K	0.15%	Call
5573	—NAVIOS MARITIME CONTAINERS L	11,084	$102K	0.15%
5574	CVGWCALAVO GROWERS INC	1,300	$101K	0.15%	Call
5575	SLFSUN LIFE FINANCIAL INC.	200	$101K	0.15%	Call
5576	—ALTIMETER GROWTH CORP	8,655	$101K	0.15%
5577	—JOUNCE THERAPEUTICS INC	9,800	$101K	0.15%	Call
5578	—LIGHTSPEED POS INC	1,600	$101K	0.15%	Put
5579	—ORBCOMM INC	13,200	$101K	0.15%	Put
5580	SJIEURSOUTH JERSEY INDS INC	4,455	$101K	0.15%
5581	TZOOTRAVELZOO	6,000	$101K	0.15%	Put
5582	VRSUSDVERSO CORP	6,905	$101K	0.15%
5583	GOROGOLD RESOURCE CORP	38,300	$101K	0.15%	Call
5584	AZZAZZ INC	2,000	$101K	0.15%	Call
5585	—ENVESTNET INC	1,400	$101K	0.15%	Put
5586	OMCLOMNICELL COM	780	$101K	0.15%
5587	—MID-AMER APT CMNTYS INC	700	$101K	0.15%	Call
5588	NFGNATIONAL FUEL GAS CO	200	$100K	0.15%	Put
5589	—NABRIVA THERAPEUTICS PLC	60,415	$100K	0.15%
5590	—AIRNET TECHNOLOGY INC	29,100	$100K	0.15%	Put
5591	—TEEKAY CORPORATION	31,200	$100K	0.15%	Call
5592	MIKUSDMICHAELS COS INC	4,554	$100K	0.15%
5593	AKTSQAKOUSTIS TECHNOLOGIES INC	7,516	$100K	0.15%
5594	RILYB. RILEY FINANCIAL INC	1,770	$100K	0.15%
5595	TMDXTRANSMEDICS GROUP INC	2,400	$100K	0.15%	Put
5596	RRGBRED ROBIN GOURMET BURGERS IN	2,500	$100K	0.15%	Put
5597	GLPGLOBAL PARTNERS LP	4,700	$100K	0.15%	Put
5598	GOOGLALPHABET INC	48,200	$100K	0.15%	Call
5599	KOSKOSMOS ENERGY LTD	32,300	$99K	0.15%	Put
5600	IGCINDIA GLOBALIZATION CAP INC	55,351	$99K	0.15%

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