GROUP ONE TRADING LLC Q1 2021 Filing

Filed May 12, 2021

Portfolio Value

$67.5B

Holdings

7,548

Report Date

Q1 2021

Filing Type

13F-HR

All Holdings (7,548 positions)

#StockSharesValue% PortfolioType
201
PBAPEMBINA PIPELINE CORP
29,300$845.0M1.25%Call
202
MOHMOLINA HEALTHCARE INC
3,600$842.0M1.25%Call
203
NOBLE MIDSTREAM PARTNERS LP
57,900$840.0M1.24%Call
204
NAKNORTHERN DYNASTY MINERALS LT
1,325,200$840.0M1.24%Call
205
RAPTRAPT THERAPEUTICS INC
37,700$837.0M1.24%Call
206
GKDGRAND CANYON ED INC
7,810$836.0M1.24%
207
TXTERNIUM SA
21,500$835.0M1.24%Call
208
FOSLFOSSIL GROUP INC
67,300$835.0M1.24%Call
209
HWMHOWMET AEROSPACE INC
26,000$835.0M1.24%Put
210
JACKJACK IN THE BOX INC
7,600$834.0M1.24%Put
211
EMAGIN CORP
223,100$834.0M1.24%Call
212
SHOCKWAVE MED INC
6,400$834.0M1.24%Call
213
ORAORMAT TECHNOLOGIES INC
10,600$832.0M1.23%Put
214
OCULOCULAR THERAPEUTIX INC
50,675$832.0M1.23%
215
MBIMBIA INC
86,357$831.0M1.23%
216
EEFTEURONET WORLDWIDE INC
600$830.0M1.23%Call
217
HBC2HSBC HLDGS PLC
28,468$830.0M1.23%
218
SWITCH INC
51,000$829.0M1.23%Put
219
HOSTESS BRANDS INC
57,800$829.0M1.23%Put
220
UNITED STS 12 MONTH OIL FD L
39,500$828.0M1.23%Call
221
GNTXGENTEX CORP
23,200$828.0M1.23%Call
222
QLYSQUALYS INC
7,900$828.0M1.23%Call
223
TMTOYOTA MOTOR CORP
5,300$827.0M1.22%Put
224
PLAYTIKA HLDG CORP
30,400$827.0M1.22%Call
225
POWWAMMO INC
139,750$827.0M1.22%
226
KODKEASTMAN KODAK CO
105,108$827.0M1.22%
227
REALOGY HLDGS CORP
54,600$826.0M1.22%Put
228
APTALPHA PRO TECH LTD
84,600$826.0M1.22%Put
229
VICI PPTYS INC
29,200$825.0M1.22%Call
230
DHRB & G FOODS INC NEW
26,560$825.0M1.22%
231
HIGHWOODS PPTYS INC
19,200$824.0M1.22%Call
232
BAHBOOZ ALLEN HAMILTON HLDG COR
10,224$823.0M1.22%
233
ENZBENZO BIOCHEM INC
239,268$823.0M1.22%
234
WIMIWIMI HOLOGRAM CLOUD INC
124,500$822.0M1.22%Put
235
MIRATI THERAPEUTICS INC
4,800$822.0M1.22%Put
236
CHEFS WHSE INC
27,000$822.0M1.22%Put
237
CASPER SLEEP INC
113,531$822.0M1.22%
238
AREALEXANDRIA REAL ESTATE EQ IN
500$822.0M1.22%Call
239
LORAL SPACE & COM INC
21,800$821.0M1.22%Call
240
CALXCALIX INC
23,700$821.0M1.22%Call
241
HAWAIIAN HOLDINGS INC
30,800$821.0M1.22%Put
242
SPORTSMANS WHSE HLDGS INC
47,600$821.0M1.22%Call
243
TKRTIMKEN CO
10,100$820.0M1.21%Put
244
M & T BK CORP
5,400$819.0M1.21%Put
245
SGMOSANGAMO THERAPEUTICS INC
65,400$819.0M1.21%Put
246
HOWARD HUGHES CORP
8,600$818.0M1.21%Put
247
KANSAS CITY SOUTHERN
3,100$818.0M1.21%Put
248
HILL ROM HLDGS INC
7,400$818.0M1.21%Call
249
AESAES CORP
30,500$818.0M1.21%
250
MOGO INC
96,200$818.0M1.21%Call
251
SANTANDER CONSUMER USA HLDGS
30,200$817.0M1.21%Put
252
AETERNA ZENTARIS INC
716,300$817.0M1.21%Call
253
PRPLPURPLE INNOVATION INC
25,800$817.0M1.21%Put
254
KANDI TECHNOLOGIES GROUP INC
130,700$817.0M1.21%Put
255
HPEHEWLETT PACKARD ENTERPRISE C
51,882$817.0M1.21%
256
ACRSACLARIS THERAPEUTICS INC
32,400$816.0M1.21%Call
257
TREXTREX CO INC
8,900$815.0M1.21%Put
258
GENMARK DIAGNOSTICS INC
34,000$813.0M1.20%Call
259
LPGDORIAN LPG LTD
61,800$811.0M1.20%Call
260
NXT-ID INC
574,500$810.0M1.20%Call
261
LISTED FD TR
62,780$809.0M1.20%
262
DACDANAOS CORPORATION
16,300$809.0M1.20%Put
263
FXEINVESCO CURRENCYSHARES EURO
7,353$808.0M1.20%
264
REATA PHARMACEUTICALS INC
8,100$808.0M1.20%Put
265
ADMAADMA BIOLOGICS INC
458,300$807.0M1.20%Call
266
HLHECLA MNG CO
141,397$805.0M1.19%
267
CLEVER LEAVES HOLDINGS INC
78,200$805.0M1.19%Put
268
CSG SYS INTL INC
17,900$804.0M1.19%Call
269
LIVEXLIVE MEDIA INC
185,000$803.0M1.19%Call
270
HRBBLOCK H & R INC
36,800$802.0M1.19%Put
271
AVALARA INC
6,000$801.0M1.19%Put
272
VENATOR MATLS PLC
173,000$801.0M1.19%Call
273
AKOUSTIS TECHNOLOGIES INC
60,000$800.0M1.18%Call
274
CTVACORTEVA INC
17,169$800.0M1.18%
275
WAITR HLDGS INC
272,500$798.0M1.18%Call
276
NCMIEURNATIONAL CINEMEDIA INC
172,370$796.0M1.18%
277
VERIVERITONE INC
33,188$796.0M1.18%
278
MEDALLIA INC
28,500$795.0M1.18%Put
279
ACHCACADIA HEALTHCARE COMPANY IN
13,900$794.0M1.18%Call
280
HAINHAIN CELESTIAL GROUP INC
18,200$794.0M1.18%Call
281
ALIBABA GROUP HLDG LTD
3,499,900$793.5M1.18%Put
282
FFIVF5 NETWORKS INC
3,800$793.0M1.17%Put
283
ATENA10 NETWORKS INC
82,517$793.0M1.17%
284
INSIGNIA SYS INC
13,500$792.0M1.17%Call
285
GRMNGARMIN LTD
6,000$791.0M1.17%Put
286
AMERIPRISE FINL INC
3,400$790.0M1.17%Call
287
EVREVERCORE INC
6,000$790.0M1.17%Put
288
NVONOVO-NORDISK A S
11,700$789.0M1.17%Call
289
SHOALS TECHNOLOGIES GROUP IN
22,600$786.0M1.16%Call
290
MSFTMICROSOFT CORP
3,333,400$785.9M1.16%Call
291
U S CONCRETE INC
10,700$785.0M1.16%Call
292
ARRIVAL GROUP
48,900$785.0M1.16%Put
293
ORAORMAT TECHNOLOGIES INC
10,000$785.0M1.16%Call
294
BEAMBEAM THERAPEUTICS INC
9,800$784.0M1.16%Put
295
MAIN STR CAP CORP
20,000$783.0M1.16%Call
296
MOHAWK GROUP HLDGS INC
26,499$782.0M1.16%
297
AQUABOUNTY TECHNOLOGIES INC
116,600$781.0M1.16%Call
298
OPYOPPENHEIMER HLDGS INC
19,500$781.0M1.16%Call
299
LEALEAR CORP
4,307$781.0M1.16%
300
VONAGE HLDGS CORP
66,000$780.0M1.16%Put
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