GROUP ONE TRADING LLC Q1 2019 Filing

Filed May 13, 2019

Portfolio Value

$16.7B

Holdings

4,769

Report Date

Q1 2019

Filing Type

13F-HR

All Holdings (4,769 positions)

#StockSharesValue% PortfolioType
401
AVAYA HLDGS CORP
35,100$591.0M3.54%Call
402
ORLYO REILLY AUTOMOTIVE INC NEW
1,522$591.0M3.54%
403
SYNEOS HEALTH INC
11,400$590.0M3.54%Call
404
CHUYS HLDGS INC
25,900$590.0M3.54%Put
405
CREE INC
10,300$589.0M3.53%Put
406
LENLENNAR CORP
12,000$589.0M3.53%Call
407
AAPLAPPLE INC
3,100$589.0M3.53%Call
408
UXIN LTD
155,400$589.0M3.53%Put
409
CDK GLOBAL INC
10,000$588.0M3.53%Call
410
TRTXTPG RE FIN TR INC
30,000$588.0M3.53%Call
411
RENEWABLE ENERGY GROUP INC
26,700$586.0M3.51%Call
412
AGIALAMOS GOLD INC NEW
114,800$583.0M3.50%Call
413
UNIVAR INC
26,300$583.0M3.50%Put
414
BARNES & NOBLE INC
107,200$582.0M3.49%Put
415
NORTHERN OIL & GAS INC NEV
212,400$582.0M3.49%Call
416
EMERSON ELEC CO
8,500$582.0M3.49%Call
417
BNEDBARNES & NOBLE INC
106,976$581.0M3.48%
418
ARRAY BIOPHARMA INC
23,800$580.0M3.48%Put
419
VICRVICOR CORP
18,711$580.0M3.48%
420
TNDMTANDEM DIABETES CARE INC
9,106$578.0M3.47%
421
MTARCELORMITTAL SA LUXEMBOURG
28,355$578.0M3.47%
422
CERNER CORP
10,100$578.0M3.47%Put
423
PIIPOLARIS INDS INC
6,834$577.0M3.46%
424
TCXTUCOWS INC
7,100$576.0M3.45%Put
425
NOVAGOLD RES INC
137,800$575.0M3.45%Call
426
UALUNITED CONTL HLDGS INC
7,186$573.0M3.44%
427
KBHKB HOME
23,700$573.0M3.44%Put
428
PACBPACIFIC BIOSCIENCES CALIF IN
79,100$572.0M3.43%Call
429
OPKOPKO HEALTH INC
218,700$571.0M3.42%Call
430
SKTTANGER FACTORY OUTLET CTRS I
27,200$571.0M3.42%Call
431
ARANTERO RES CORP
64,600$570.0M3.42%Call
432
SOLID BIOSCIENCES INC
62,000$570.0M3.42%Put
433
PULTE GROUP INC
20,300$568.0M3.41%Put
434
VIRTU FINL INC
23,900$568.0M3.41%Call
435
SYNASYNAPTICS INC
14,300$568.0M3.41%Call
436
NEW AGE BEVERAGES CORP
107,955$568.0M3.41%
437
IOUSDION GEOPHYSICAL CORP
39,354$568.0M3.41%
438
ESTCELASTIC N V
7,100$567.0M3.40%Call
439
HAWAIIAN HOLDINGS INC
21,600$567.0M3.40%Call
440
MSFTMICROSOFT CORP
4,800$566.0M3.39%Put
441
GTNGRAY TELEVISION INC
26,500$566.0M3.39%Call
442
MGNXMACROGENICS INC
31,500$566.0M3.39%Call
443
RITMNEW RESIDENTIAL INVT CORP
33,500$566.0M3.39%Put
444
CARRIZO OIL & GAS INC
45,300$565.0M3.39%Call
445
FRONTIER COMMUNICATIONS CORP
284,000$565.0M3.39%Put
446
PARSLEY ENERGY INC
29,200$564.0M3.38%Put
447
RITE AID CORP
887,200$563.0M3.38%Call
448
PETIQ INC
17,900$562.0M3.37%Call
449
PSMTPRICESMART INC
9,551$562.0M3.37%
450
NVTA1EURINVITAE CORP
23,937$561.0M3.36%
451
XIFRNEXTERA ENERGY PARTNERS LP
12,000$560.0M3.36%Put
452
CTSHCOGNIZANT TECHNOLOGY SOLUTIO
7,700$558.0M3.35%Call
453
CAMECO CORP
47,300$558.0M3.35%Put
454
DISCOVERY INC
20,600$557.0M3.34%Call
455
RPDRAPID7 INC
11,000$557.0M3.34%Put
456
ALTABA INC
7,500$556.0M3.33%Put
457
KNXKNIGHT SWIFT TRANSN HLDGS IN
16,942$554.0M3.32%
458
HANESBRANDS INC
31,000$554.0M3.32%Put
459
CLWCLEARWATER PAPER CORP
28,400$553.0M3.32%Call
460
KBHKB HOME
22,900$553.0M3.32%Call
461
TALTAL EDUCATION GROUP
15,308$552.0M3.31%
462
KNDIKANDI TECHNOLOGIES GROUP INC
98,323$552.0M3.31%
463
IPINTL PAPER CO
11,900$551.0M3.30%Put
464
CCCHEMOURS CO
14,800$550.0M3.30%Call
465
CAHCARDINAL HEALTH INC
11,400$549.0M3.29%Call
466
SORRENTO THERAPEUTICS INC
115,500$549.0M3.29%Put
467
ROSTROSS STORES INC
5,900$549.0M3.29%Call
468
SWITCH INC
53,200$548.0M3.29%Call
469
ATIALLEGHENY TECHNOLOGIES INC
21,400$547.0M3.28%Put
470
AZNASTRAZENECA PLC
13,426$543.0M3.26%
471
ACHCACADIA HEALTHCARE COMPANY IN
18,500$542.0M3.25%Put
472
SEATTLE GENETICS INC
7,400$542.0M3.25%Put
473
FANHUA INC
20,600$541.0M3.24%Call
474
NUVASIVE INC
9,500$540.0M3.24%Put
475
LOMALOMA NEGRA CORP
49,322$540.0M3.24%
476
OSISOSI SYSTEMS INC
6,148$539.0M3.23%
477
COLONY CAP INC NEW
100,700$536.0M3.21%Put
478
UNIVERSAL HLTH SVCS INC
4,000$535.0M3.21%Call
479
MRSHMARSH & MCLENNAN COS INC
5,700$535.0M3.21%Put
480
FLOTEK INDS INC DEL
164,700$534.0M3.20%Call
481
CARBON BLACK INC
38,301$534.0M3.20%
482
NXSTNEXSTAR MEDIA GROUP INC
4,914$533.0M3.20%
483
SKTTANGER FACTORY OUTLET CTRS I
25,400$533.0M3.20%Put
484
WESWESTERN MIDSTREAM PARTNERS L
17,000$533.0M3.20%Call
485
BMC STK HLDGS INC
30,000$530.0M3.18%Put
486
WORLD WRESTLING ENTMT INC
6,100$529.0M3.17%Call
487
SMSM ENERGY CO
30,200$528.0M3.17%Call
488
CNX MIDSTREAM PARTNERS LP
34,700$528.0M3.17%Put
489
HLXHELIX ENERGY SOLUTIONS GRP I
66,600$527.0M3.16%Put
490
AMGAFFILIATED MANAGERS GROUP IN
4,900$525.0M3.15%Call
491
ORTHOFIX MED INC
9,300$525.0M3.15%Call
492
NEOPHOTONICS CORP
83,430$525.0M3.15%
493
GROUPON INC
147,600$524.0M3.14%Call
494
TPDTEMPUR SEALY INTL INC
9,072$523.0M3.14%
495
MGNXMACROGENICS INC
29,073$523.0M3.14%
496
WORTHINGTON INDS INC
14,000$522.0M3.13%Put
497
BTUPEABODY ENERGY CORP NEW
18,400$521.0M3.12%Put
498
WFRDWEATHERFORD INTL PLC
745,238$520.0M3.12%
499
SWKSSKYWORKS SOLUTIONS INC
6,300$520.0M3.12%Call
500
RIOTRIOT BLOCKCHAIN INC
158,800$519.0M3.11%Put
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