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
3201	ADMARCHER DANIELS MIDLAND CO	16,800	$958K	1.42%	Put
3202	SGENUSDSEAGEN INC	6,898	$958K	1.42%
3203	—OFFICE PPTYS INCOME TR	34,800	$958K	1.42%	Call
3204	DBIDESIGNER BRANDS INC	55,000	$957K	1.42%	Put
3205	SSNCSS&C TECHNOLOGIES HLDGS INC	13,700	$957K	1.42%	Put
3206	—VERINT SYS INC	21,000	$955K	1.41%	Put
3207	ATIALLEGHENY TECHNOLOGIES INC	45,300	$954K	1.41%	Put
3208	—PPD INC	25,200	$954K	1.41%	Call
3209	OPLNKAR AUCTION SVCS INC	63,500	$953K	1.41%	Call
3210	QUOTUSDQUOTIENT TECHNOLOGY INC	58,349	$953K	1.41%
3211	AXPAMERICAN EXPRESS CO	6,737	$953K	1.41%
3212	—FIDUS INVT CORP	61,200	$952K	1.41%	Put
3213	COHUCOHU INC	22,700	$950K	1.41%	Put
3214	MFS1EURWELBILT INC	58,379	$949K	1.41%
3215	—NEVRO CORP	6,800	$949K	1.41%	Call
3216	—TUPPERWARE BRANDS CORP	35,900	$948K	1.40%	Call
3217	—COMERICA INC	13,200	$947K	1.40%	Call
3218	RACEFERRARI N V	4,525	$947K	1.40%
3219	—AMERICAN WTR WKS CO INC NEW	6,300	$945K	1.40%	Call
3220	HDBHDFC BANK LTD	12,167	$945K	1.40%
3221	—BROOKFIELD PROPERTY PARTRS L	53,100	$945K	1.40%	Call
3222	—ROMEO POWER INC	113,400	$945K	1.40%	Put
3223	ALSALLSTATE CORP	8,203	$943K	1.40%
3224	—HARTFORD FINL SVCS GROUP INC	14,100	$942K	1.40%	Put
3225	—SCIPLAY CORPORATION	58,200	$942K	1.40%	Put
3226	YEXTYEXT INC	64,900	$940K	1.39%	Call
3227	—SOCIEDAD QUIMICA Y MINERA DE	17,700	$939K	1.39%	Put
3228	LZBLA Z BOY INC	22,100	$939K	1.39%	Put
3229	—500 COM LTD	43,900	$938K	1.39%	Put
3230	COOCOOPER COS INC	2,439	$937K	1.39%
3231	KOSKOSMOS ENERGY LTD	305,100	$937K	1.39%	Call
3232	BCBRUNSWICK CORP	9,800	$935K	1.38%	Call
3233	—MYOVANT SCIENCES LTD	45,400	$934K	1.38%	Call
3234	—ZEPP HEALTH CORPORATION	86,600	$933K	1.38%	Call
3235	—LIMELIGHT NETWORKS INC	261,477	$933K	1.38%
3236	—CHIMERA INVT CORP	73,500	$933K	1.38%	Call
3237	STKLSUNOPTA INC	63,000	$931K	1.38%	Put
3238	—MESOBLAST LTD	112,600	$931K	1.38%	Put
3239	AZTABROOKS AUTOMATION INC NEW	11,400	$931K	1.38%	Call
3240	GDDYGODADDY INC	12,000	$931K	1.38%	Call
3241	LAMRLAMAR ADVERTISING CO NEW	9,900	$930K	1.38%	Put
3242	KODKODIAK SCIENCES INC	8,200	$930K	1.38%	Call
3243	LWLAMB WESTON HLDGS INC	12,000	$930K	1.38%	Put
3244	EXKENDEAVOUR SILVER CORP	187,300	$929K	1.38%	Call
3245	—NEPTUNE WELLNESS SOLUTIONS I	708,300	$928K	1.37%	Call
3246	ERIIENERGY RECOVERY INC	50,500	$926K	1.37%	Put
3247	ROOTGBPROOT INC	72,647	$925K	1.37%
3248	MEOHMETHANEX CORP	25,100	$924K	1.37%	Call
3249	PLDPROLOGIS INC.	8,700	$922K	1.37%	Put
3250	ZBRAZEBRA TECHNOLOGIES CORPORATI	1,900	$922K	1.37%	Put
3251	—ALTITUDE ACQUISITION CORP	91,900	$922K	1.37%	Put
3252	—KRATON CORPORATION	25,198	$922K	1.37%
3253	—VOXX INTL CORP	48,300	$921K	1.36%	Call
3254	LOGILOGITECH INTL S A	8,818	$921K	1.36%
3255	SBLKSTAR BULK CARRIERS CORP.	62,600	$919K	1.36%	Call
3256	KLICKULICKE & SOFFA INDS INC	18,700	$918K	1.36%	Call
3257	CALMCAL MAINE FOODS INC	23,900	$918K	1.36%	Call
3258	—SILVER SPIKE ACQUISITION COR	50,000	$918K	1.36%	Put
3259	BACVERIZON COMMUNICATIONS INC	15,722	$914K	1.35%
3260	—VIEW INC	123,500	$914K	1.35%	Put
3261	—MCEWEN MNG INC	877,520	$913K	1.35%
3262	—SELECTA BIOSCIENCES INC	201,700	$913K	1.35%	Call
3263	GBCIGLACIER BANCORP INC NEW	16,000	$913K	1.35%	Call
3264	—RADIUS HEALTH INC	43,700	$912K	1.35%	Put
3265	SFLSFL CORPORATION LTD	113,700	$912K	1.35%	Put
3266	LOVELOVESAC COMPANY	16,100	$911K	1.35%	Call
3267	—MARINUS PHARMACEUTICALS INC	58,800	$910K	1.35%	Put
3268	HUBSHUBSPOT INC	2,000	$908K	1.34%	Put
3269	WRAPWRAP TECHNOLOGIES INC	163,200	$907K	1.34%	Call
3270	WESWESTERN MIDSTREAM PARTNERS L	48,700	$905K	1.34%	Put
3271	—BRIGHTCOVE INC	44,800	$901K	1.33%	Put
3272	—NEXTGEN ACQUISITION CORP	90,600	$899K	1.33%	Put
3273	MNKDMANNKIND CORP	229,200	$898K	1.33%	Call
3274	SYFSYNCHRONY FINANCIAL	22,068	$897K	1.33%
3275	SVMSILVERCORP METALS INC	182,700	$897K	1.33%	Put
3276	NGLNGL ENERGY PARTNERS LP	439,500	$897K	1.33%	Put
3277	—YELLOW CORP	102,000	$897K	1.33%	Put
3278	—VOCERA COMMUNICATIONS INC	23,300	$896K	1.33%	Call
3279	RCKTROCKET PHARMACEUTICALS INC	20,200	$896K	1.33%	Put
3280	—OLLIES BARGAIN OUTLET HLDGS	10,300	$896K	1.33%	Call
3281	—BUNGE LIMITED	11,300	$896K	1.33%	Put
3282	—TRILLIUM THERAPEUTICS INC	83,400	$896K	1.33%	Put
3283	GDOTGREEN DOT CORP	19,550	$895K	1.33%
3284	—GRANITE CONSTR INC	22,200	$894K	1.32%	Call
3285	RGENREPLIGEN CORP	4,600	$894K	1.32%	Call
3286	YPFYPF SOCIEDAD ANONIMA	216,900	$891K	1.32%	Put
3287	—BRAINSTORM CELL THERAPEUTICS	232,600	$891K	1.32%	Call
3288	SOHUSOHU COM LTD	56,700	$891K	1.32%	Call
3289	VSTOEURVISTA OUTDOOR INC	27,758	$890K	1.32%
3290	SAJACOMPANHIA DE SANEAMENTO BASI	121,407	$890K	1.32%
3291	EDCONSOLIDATED EDISON INC	11,900	$890K	1.32%	Put
3292	ALNYALNYLAM PHARMACEUTICALS INC	6,300	$890K	1.32%	Call
3293	USACUSA COMPRESSION PARTNERS LP	58,100	$890K	1.32%	Call
3294	RFREGIONS FINANCIAL CORP NEW	42,900	$886K	1.31%	Put
3295	PDPAGERDUTY INC	22,000	$885K	1.31%	Put
3296	TTITETRA TECHNOLOGIES INC DEL	368,300	$884K	1.31%	Put
3297	QIWQIWI PLC	82,900	$883K	1.31%
3298	—PROSHARES TR	90,900	$882K	1.31%	Call
3299	—VIACOMCBS INC	18,700	$882K	1.31%	Put
3300	CDWCDW CORP	5,300	$878K	1.30%	Call

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