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
5401	—MESA AIR GROUP INC	9,000	$121K	0.18%	Put
5402	—PREFERRED APT CMNTYS INC	12,260	$121K	0.18%
5403	FLWS1 800 FLOWERS COM INC	4,400	$121K	0.18%	Put
5404	ZVRAKEMPHARM INC	13,163	$121K	0.18%
5405	HMCHONDA MOTOR LTD	4,000	$121K	0.18%	Put
5406	—ALEXCO RESOURCE CORP	48,200	$121K	0.18%	Call
5407	—NEW SR INVT GROUP INC	19,400	$121K	0.18%	Call
5408	FLWS1 800 FLOWERS COM INC	4,400	$121K	0.18%	Call
5409	—CLIMATE CHANGE CRISIS REAL I	8,800	$121K	0.18%	Put
5410	CNETZW DATA ACTION TECHNOLOGS IN	45,700	$121K	0.18%	Put
5411	GTNGRAY TELEVISION INC	6,600	$121K	0.18%	Put
5412	KNKNOWLES CORP	5,800	$121K	0.18%	Call
5413	NFLXNETFLIX INC	230,300	$120K	0.18%	Call
5414	—TYME TECHNOLOGIES INC	67,370	$120K	0.18%
5415	—SUNWORKS INC	8,200	$120K	0.18%	Put
5416	BPOPPOPULAR INC	1,700	$120K	0.18%	Put
5417	PAGPENSKE AUTOMOTIVE GRP INC	1,500	$120K	0.18%	Call
5418	—VESPER HEALTHCARE ACQSTN COR	11,100	$120K	0.18%	Put
5419	—GRAINGER W W INC	300	$120K	0.18%	Call
5420	SDSANDRIDGE ENERGY INC	30,800	$120K	0.18%	Call
5421	—CHUYS HLDGS INC	2,700	$120K	0.18%	Call
5422	PXLWPIXELWORKS INC	36,200	$120K	0.18%	Put
5423	—ENDO INTL PLC	16,100	$119K	0.18%	Put
5424	—AEGLEA BIOTHERAPEUTICS INC	15,000	$119K	0.18%	Put
5425	—FLUENT INC	29,100	$119K	0.18%	Put
5426	MFICLAPOLLO INVT CORP	8,700	$119K	0.18%	Put
5427	VAPOVAPOTHERM INC	4,963	$119K	0.18%
5428	WITWIPRO LTD	18,700	$119K	0.18%	Call
5429	HLITHARMONIC INC	15,170	$119K	0.18%
5430	TNETTRINET GROUP INC	1,522	$119K	0.18%
5431	NDSNNORDSON CORP	600	$119K	0.18%	Put
5432	COWNEURCOWEN INC	3,365	$118K	0.17%
5433	—PATTERSON COS INC	3,700	$118K	0.17%	Put
5434	—NEXTIER OILFIELD SOLUTIONS	31,600	$118K	0.17%	Call
5435	ESRTEMPIRE ST RLTY TR INC	10,600	$118K	0.17%
5436	—EXPEDITORS INTL WASH INC	1,100	$118K	0.17%	Call
5437	—REALNETWORKS INC	27,700	$118K	0.17%	Put
5438	AXTIAXT INC	10,100	$118K	0.17%	Put
5439	RSIRUSH STREET INTERACTIVE INC	7,200	$118K	0.17%	Put
5440	—FSD PHARMA INC	61,600	$118K	0.17%	Put
5441	—BLUEKNIGHT ENERGY PARTNERS L	36,100	$117K	0.17%	Call
5442	FORMFORMFACTOR INC	2,600	$117K	0.17%	Call
5443	AGCOAGCO CORP	813	$117K	0.17%
5444	—HOLICITY INC	9,900	$117K	0.17%	Put
5445	—PLAYAGS INC	14,500	$117K	0.17%	Put
5446	—CENTURY ALUM CO	6,600	$117K	0.17%	Put
5447	CDXSCODEXIS INC	5,100	$117K	0.17%	Call
5448	EPMEVOLUTION PETE CORP	34,700	$117K	0.17%	Call
5449	LRNSTRIDE INC	3,900	$117K	0.17%	Put
5450	—LION GROUP HOLDING LTD	26,400	$117K	0.17%	Call
5451	—EPIZYME INC	13,400	$117K	0.17%	Call
5452	—DECARBONIZATION PLUS ACQU CO	11,200	$117K	0.17%	Call
5453	—FOLEY TRASIMENE ACQUISTN COR	11,580	$116K	0.17%
5454	—ADAMIS PHARMACEUTICALS CORP	123,900	$116K	0.17%	Put
5455	—ALTRA INDL MOTION CORP	2,100	$116K	0.17%	Call
5456	RDWRRADWARE LTD	4,400	$115K	0.17%	Call
5457	BBARBANCO BBVA ARGENTINA S A	42,300	$115K	0.17%	Call
5458	—HERSHA HOSPITALITY TR	10,900	$115K	0.17%	Call
5459	SNASNAP ON INC	500	$115K	0.17%	Put
5460	ORGOORGANOGENESIS HLDGS INC	6,300	$115K	0.17%	Call
5461	ECECOPETROL S A	9,000	$115K	0.17%	Call
5462	NVONOVO-NORDISK A S	1,700	$115K	0.17%	Put
5463	—SERVICE PPTYS TR	9,700	$115K	0.17%	Call
5464	RYAMRAYONIER ADVANCED MATLS INC	12,700	$115K	0.17%	Call
5465	—BERRY CORP	20,600	$114K	0.17%	Put
5466	—GENETIC TECHNOLOGIES LTD	27,400	$114K	0.17%	Put
5467	—180 DEGREE CAP CORP	15,400	$114K	0.17%	Put
5468	QVCAUSDQURATE RETAIL INC	9,721	$114K	0.17%
5469	ZNHUSDCHINA SOUTHERN AIRLINES CO L	3,100	$114K	0.17%
5470	DOCHEALTHPEAK PROPERTIES INC	3,600	$114K	0.17%	Put
5471	PRFTUSDPERFICIENT INC	1,941	$114K	0.17%
5472	WSTWEST PHARMACEUTICAL SVSC INC	400	$113K	0.17%
5473	SLABSILICON LABORATORIES INC	800	$113K	0.17%	Call
5474	—STONEMOR INC	59,800	$113K	0.17%	Put
5475	—MICRO FOCUS INTL PLC	14,700	$113K	0.17%	Put
5476	GOGLGOLDEN OCEAN GROUP LTD	16,910	$113K	0.17%
5477	—DCP MIDSTREAM LP	5,200	$113K	0.17%	Put
5478	ARQTARCUTIS BIOTHERAPEUTICS INC	3,900	$113K	0.17%	Call
5479	TEFOFTELEFONICA S A	25,000	$113K	0.17%	Call
5480	PARAAVIACOMCBS INC	2,400	$113K	0.17%
5481	—CM LIFE SCIENCES INC	7,600	$113K	0.17%	Put
5482	ESEVERSOURCE ENERGY	1,300	$113K	0.17%	Put
5483	—IZEA WORLDWIDE INC	29,900	$113K	0.17%	Put
5484	TCBITEXAS CAP BANCSHARES INC	158,300	$112K	0.17%	Call
5485	TOURTUNIU CORP	32,300	$112K	0.17%	Call
5486	KMTKENNAMETAL INC	2,800	$112K	0.17%	Call
5487	PNRPENTAIR PLC	1,800	$112K	0.17%	Call
5488	CERSCERUS CORP	18,594	$112K	0.17%
5489	—BROOKDALE SR LIVING INC	18,300	$111K	0.16%	Call
5490	SPCXCOLLABORATIVE INVESTMNT SER	3,909	$111K	0.16%
5491	—GASLOG PARTNERS LP	41,600	$111K	0.16%	Put
5492	—NEOPHOTONICS CORP	9,300	$111K	0.16%	Call
5493	MSMMSC INDL DIRECT INC	1,227	$111K	0.16%
5494	FOSLFOSSIL GROUP INC	8,911	$111K	0.16%
5495	WBSWEBSTER FINL CORP CONN	200	$110K	0.16%	Put
5496	—SPARK NETWORKS SE	14,700	$110K	0.16%	Call
5497	—APOLLO COML REAL EST FIN INC	7,900	$110K	0.16%	Call
5498	—ALTITUDE ACQUISITION CORP	10,975	$110K	0.16%
5499	KMDAKAMADA LTD	17,800	$110K	0.16%	Call
5500	PRGSPROGRESS SOFTWARE CORP	2,500	$110K	0.16%	Put

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