GROUP ONE TRADING LLC Q1 2019 Filing

Filed May 13, 2019

Portfolio Value

$16.7M

Holdings

4,769

Report Date

Q1 2019

Filing Type

13F-HR

All Holdings (4,769 positions)

#	Stock	Shares	Value	% Portfolio	Type
401	SMTCSEMTECH CORP	11,600	$591K	3.54%	Put
402	—AVAYA HLDGS CORP	35,100	$591K	3.54%	Call
403	—SYNEOS HEALTH INC	11,400	$590K	3.54%	Call
404	—CHUYS HLDGS INC	25,900	$590K	3.54%	Put
405	—CREE INC	10,300	$589K	3.53%	Put
406	AAPLAPPLE INC	3,100	$589K	3.53%	Call
407	LENLENNAR CORP	12,000	$589K	3.53%	Call
408	—UXIN LTD	155,400	$589K	3.53%	Put
409	TRTXTPG RE FIN TR INC	30,000	$588K	3.53%	Call
410	—CDK GLOBAL INC	10,000	$588K	3.53%	Call
411	—RENEWABLE ENERGY GROUP INC	26,700	$586K	3.51%	Call
412	—UNIVAR INC	26,300	$583K	3.50%	Put
413	AGIALAMOS GOLD INC NEW	114,800	$583K	3.50%	Call
414	—NORTHERN OIL & GAS INC NEV	212,400	$582K	3.49%	Call
415	—BARNES & NOBLE INC	107,200	$582K	3.49%	Put
416	—EMERSON ELEC CO	8,500	$582K	3.49%	Call
417	BNEDBARNES & NOBLE INC	106,976	$581K	3.48%
418	VICRVICOR CORP	18,711	$580K	3.48%
419	—ARRAY BIOPHARMA INC	23,800	$580K	3.48%	Put
420	MTARCELORMITTAL SA LUXEMBOURG	28,355	$578K	3.47%
421	TNDMTANDEM DIABETES CARE INC	9,106	$578K	3.47%
422	—CERNER CORP	10,100	$578K	3.47%	Put
423	PIIPOLARIS INDS INC	6,834	$577K	3.46%
424	TCXTUCOWS INC	7,100	$576K	3.45%	Put
425	—NOVAGOLD RES INC	137,800	$575K	3.45%	Call
426	UALUNITED CONTL HLDGS INC	7,186	$573K	3.44%
427	KBHKB HOME	23,700	$573K	3.44%	Put
428	PACBPACIFIC BIOSCIENCES CALIF IN	79,100	$572K	3.43%	Call
429	OPKOPKO HEALTH INC	218,700	$571K	3.42%	Call
430	SKTTANGER FACTORY OUTLET CTRS I	27,200	$571K	3.42%	Call
431	ARANTERO RES CORP	64,600	$570K	3.42%	Call
432	—SOLID BIOSCIENCES INC	62,000	$570K	3.42%	Put
433	—VIRTU FINL INC	23,900	$568K	3.41%	Call
434	IOUSDION GEOPHYSICAL CORP	39,354	$568K	3.41%
435	—NEW AGE BEVERAGES CORP	107,955	$568K	3.41%
436	—PULTE GROUP INC	20,300	$568K	3.41%	Put
437	SYNASYNAPTICS INC	14,300	$568K	3.41%	Call
438	—HAWAIIAN HOLDINGS INC	21,600	$567K	3.40%	Call
439	ESTCELASTIC N V	7,100	$567K	3.40%	Call
440	MSFTMICROSOFT CORP	4,800	$566K	3.39%	Put
441	MGNXMACROGENICS INC	31,500	$566K	3.39%	Call
442	RITMNEW RESIDENTIAL INVT CORP	33,500	$566K	3.39%	Put
443	GTNGRAY TELEVISION INC	26,500	$566K	3.39%	Call
444	—CARRIZO OIL & GAS INC	45,300	$565K	3.39%	Call
445	—FRONTIER COMMUNICATIONS CORP	284,000	$565K	3.39%	Put
446	—PARSLEY ENERGY INC	29,200	$564K	3.38%	Put
447	—RITE AID CORP	887,200	$563K	3.38%	Call
448	—PETIQ INC	17,900	$562K	3.37%	Call
449	PSMTPRICESMART INC	9,551	$562K	3.37%
450	NVTA1EURINVITAE CORP	23,937	$561K	3.36%
451	XIFRNEXTERA ENERGY PARTNERS LP	12,000	$560K	3.36%	Put
452	CTSHCOGNIZANT TECHNOLOGY SOLUTIO	7,700	$558K	3.35%	Call
453	—CAMECO CORP	47,300	$558K	3.35%	Put
454	RPDRAPID7 INC	11,000	$557K	3.34%	Put
455	—DISCOVERY INC	20,600	$557K	3.34%	Call
456	—ALTABA INC	7,500	$556K	3.33%	Put
457	KNXKNIGHT SWIFT TRANSN HLDGS IN	16,942	$554K	3.32%
458	—HANESBRANDS INC	31,000	$554K	3.32%	Put
459	KBHKB HOME	22,900	$553K	3.32%	Call
460	CLWCLEARWATER PAPER CORP	28,400	$553K	3.32%	Call
461	TALTAL EDUCATION GROUP	15,308	$552K	3.31%
462	KNDIKANDI TECHNOLOGIES GROUP INC	98,323	$552K	3.31%
463	IPINTL PAPER CO	11,900	$551K	3.30%	Put
464	CCCHEMOURS CO	14,800	$550K	3.30%	Call
465	ROSTROSS STORES INC	5,900	$549K	3.29%	Call
466	—SORRENTO THERAPEUTICS INC	115,500	$549K	3.29%	Put
467	CAHCARDINAL HEALTH INC	11,400	$549K	3.29%	Call
468	—SWITCH INC	53,200	$548K	3.29%	Call
469	ATIALLEGHENY TECHNOLOGIES INC	21,400	$547K	3.28%	Put
470	AZNASTRAZENECA PLC	13,426	$543K	3.26%
471	ACHCACADIA HEALTHCARE COMPANY IN	18,500	$542K	3.25%	Put
472	—SEATTLE GENETICS INC	7,400	$542K	3.25%	Put
473	—FANHUA INC	20,600	$541K	3.24%	Call
474	LOMALOMA NEGRA CORP	49,322	$540K	3.24%
475	—NUVASIVE INC	9,500	$540K	3.24%	Put
476	OSISOSI SYSTEMS INC	6,148	$539K	3.23%
477	—COLONY CAP INC NEW	100,700	$536K	3.21%	Put
478	MRSHMARSH & MCLENNAN COS INC	5,700	$535K	3.21%	Put
479	—UNIVERSAL HLTH SVCS INC	4,000	$535K	3.21%	Call
480	—CARBON BLACK INC	38,301	$534K	3.20%
481	—FLOTEK INDS INC DEL	164,700	$534K	3.20%	Call
482	SKTTANGER FACTORY OUTLET CTRS I	25,400	$533K	3.20%	Put
483	NXSTNEXSTAR MEDIA GROUP INC	4,914	$533K	3.20%
484	WESWESTERN MIDSTREAM PARTNERS L	17,000	$533K	3.20%	Call
485	—BMC STK HLDGS INC	30,000	$530K	3.18%	Put
486	—WORLD WRESTLING ENTMT INC	6,100	$529K	3.17%	Call
487	SMSM ENERGY CO	30,200	$528K	3.17%	Call
488	—CNX MIDSTREAM PARTNERS LP	34,700	$528K	3.17%	Put
489	HLXHELIX ENERGY SOLUTIONS GRP I	66,600	$527K	3.16%	Put
490	AMGAFFILIATED MANAGERS GROUP IN	4,900	$525K	3.15%	Call
491	—ORTHOFIX MED INC	9,300	$525K	3.15%	Call
492	—NEOPHOTONICS CORP	83,430	$525K	3.15%
493	—GROUPON INC	147,600	$524K	3.14%	Call
494	MGNXMACROGENICS INC	29,073	$523K	3.14%
495	TPDTEMPUR SEALY INTL INC	9,072	$523K	3.14%
496	—WORTHINGTON INDS INC	14,000	$522K	3.13%	Put
497	BTUPEABODY ENERGY CORP NEW	18,400	$521K	3.12%	Put
498	SWKSSKYWORKS SOLUTIONS INC	6,300	$520K	3.12%	Call
499	WFRDWEATHERFORD INTL PLC	745,238	$520K	3.12%
500	BWABORGWARNER INC	13,500	$519K	3.11%	Put

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