GROUP ONE TRADING LLC Q4 2018 Filing

Filed February 6, 2019

Portfolio Value

$11.5T

Holdings

4,844

Report Date

Q4 2018

Filing Type

13F-HR

All Holdings (4,844 positions)

#StockSharesValue% PortfolioType
101
PIIPOLARIS INDS INC
11,300$866.0M0.01%Call
102
DDOMINION ENERGY INC
12,100$865.0M0.01%Call
103
PHPARKER HANNIFIN CORP
5,800$865.0M0.01%Call
104
CF INDS HLDGS INC
19,800$862.0M0.01%Call
105
STIFEL FINL CORP
20,800$862.0M0.01%Call
106
RDNRADIAN GROUP INC
52,500$859.0M0.01%Call
107
CLGXCORELOGIC INC
25,630$857.0M0.01%
108
BAXBAXTER INTL INC
13,000$856.0M0.01%Call
109
TREEHOUSE FOODS INC
16,800$852.0M0.01%Call
110
CASA1EURCASA SYS INC
64,697$849.0M0.01%
111
ZTOZTO EXPRESS CAYMAN INC
53,600$848.0M0.01%Call
112
PTCTPTC THERAPEUTICS INC
24,694$848.0M0.01%
113
GWWGRAINGER W W INC
3,000$847.0M0.01%Put
114
AOSSMITH A O
19,800$845.0M0.01%Put
115
MSIMOTOROLA SOLUTIONS INC
7,344$845.0M0.01%
116
FRONT YD RESIDENTIAL CORP
96,700$844.0M0.01%Call
117
PDFSPDF SOLUTIONS INC
100,000$843.0M0.01%
118
OLEDUNIVERSAL DISPLAY CORP
9,000$842.0M0.01%Put
119
TAHOE RES INC
230,700$842.0M0.01%Call
120
IMMRIMMERSION CORP
93,688$839.0M0.01%
121
CORTCORCEPT THERAPEUTICS INC
62,800$839.0M0.01%Call
122
INGERSOLL-RAND PLC
9,200$839.0M0.01%Call
123
NBRNABORS INDUSTRIES LTD
419,354$839.0M0.01%
124
MAXWELL TECHNOLOGIES INC
404,700$838.0M0.01%Put
125
WORLD WRESTLING ENTMT INC
11,200$837.0M0.01%Put
126
SPIRIT AIRLS INC
14,400$834.0M0.01%Call
127
MOBILE TELESYSTEMS PJSC
119,000$833.0M0.01%Put
128
RIOTRIOT BLOCKCHAIN INC
551,700$833.0M0.01%Call
129
REALOGY HLDGS CORP
56,600$831.0M0.01%Call
130
IPINTL PAPER CO
20,600$831.0M0.01%Put
131
EDGEWELL PERS CARE CO
22,200$829.0M0.01%Call
132
FANHUA INC
37,698$827.0M0.01%
133
MNKDMANNKIND CORP
779,600$826.0M0.01%Put
134
XILINX INC
9,700$826.0M0.01%Put
135
TSMTAIWAN SEMICONDUCTOR MFG LTD
22,346$825.0M0.01%
136
RNGRINGCENTRAL INC
10,000$824.0M0.01%Put
137
FRONTIER COMMUNICATIONS CORP
345,300$822.0M0.01%Put
138
CNCCENTENE CORP DEL
7,125$822.0M0.01%
139
JNPJUNIPER NETWORKS INC
30,506$821.0M0.01%
140
NDLSUSDNOODLES & CO
117,342$820.0M0.01%
141
PNRPENTAIR PLC
21,700$820.0M0.01%Put
142
CHINA BIOLOGIC PRODS HLDGS I
10,808$820.0M0.01%
143
CGNXCOGNEX CORP
21,100$816.0M0.01%Call
144
FNDFLOOR & DECOR HLDGS INC
31,504$816.0M0.01%
145
SONOSONOS INC
82,800$813.0M0.01%Call
146
COMMVAULT SYSTEMS INC
13,700$810.0M0.01%Put
147
HALOHALOZYME THERAPEUTICS INC
55,300$809.0M0.01%Put
148
GOOSCANADA GOOSE HOLDINGS INC
18,500$809.0M0.01%Put
149
SIENTRA INC
63,600$808.0M0.01%Call
150
CRTOCRITEO S A
35,526$807.0M0.01%
151
CHGGCHEGG INC
28,400$807.0M0.01%Call
152
GULFPORT ENERGY CORP
123,000$806.0M0.01%Call
153
TOTAL SYS SVCS INC
9,900$805.0M0.01%Call
154
FIVNFIVE9 INC
18,400$804.0M0.01%Call
155
FLOFLOWERS FOODS INC
43,400$802.0M0.01%Call
156
TSNTYSON FOODS INC
15,000$801.0M0.01%Put
157
ESNTESSENT GROUP LTD
23,400$800.0M0.01%Call
158
4DHDANA INCORPORATED
58,608$799.0M0.01%
159
RYNRAYONIER INC
28,800$797.0M0.01%Put
160
WYNDHAM DESTINATIONS INC
22,200$796.0M0.01%Put
161
EWEDWARDS LIFESCIENCES CORP
5,200$796.0M0.01%Put
162
MIKUSDMICHAELS COS INC
58,699$795.0M0.01%
163
CLVSEURCLOVIS ONCOLOGY INC
44,285$795.0M0.01%
164
EAGLE PHARMACEUTICALS INC
19,700$794.0M0.01%Put
165
NKENIKE INC
10,700$793.0M0.01%Put
166
CERSCERUS CORP
156,400$793.0M0.01%Put
167
CONSOLIDATED COMM HLDGS INC
80,300$793.0M0.01%Call
168
OASEUROASIS PETE INC NEW
143,273$792.0M0.01%
169
PATTERN ENERGY GROUP INC
42,500$791.0M0.01%Put
170
RRRRED ROCK RESORTS INC
38,900$790.0M0.01%Put
171
VYXNCR CORP NEW
34,200$789.0M0.01%Call
172
SCIENTIFIC GAMES CORP
44,100$789.0M0.01%Put
173
TAILORED BRANDS INC
57,800$788.0M0.01%Call
174
BP PRUDHOE BAY RTY TR
36,400$788.0M0.01%Put
175
ASSERTIO THERAPEUTICS INC
218,400$788.0M0.01%Call
176
FLSFLOWSERVE CORP
20,700$787.0M0.01%Call
177
GRUBHUB INC
10,200$783.0M0.01%Put
178
SG7SAGE THERAPEUTICS INC
8,166$782.0M0.01%
179
TNDMTANDEM DIABETES CARE INC
20,600$782.0M0.01%Put
180
MAXWELL TECHNOLOGIES INC
377,059$781.0M0.01%
181
DHTDHT HOLDINGS INC
198,500$778.0M0.01%Call
182
BTUPEABODY ENERGY CORP NEW
25,500$777.0M0.01%Put
183
ACELRX PHARMACEUTICALS INC
336,000$776.0M0.01%Put
184
RENEWABLE ENERGY GROUP INC
30,100$774.0M0.01%Call
185
PAGPENSKE AUTOMOTIVE GRP INC
19,200$774.0M0.01%Call
186
9990302DAPACHE CORP
29,440$773.0M0.01%
187
THRMGENTHERM INC
19,300$772.0M0.01%Call
188
CARA THERAPEUTICS INC
59,300$771.0M0.01%Put
189
AMTTD AMERITRADE HLDG CORP
15,708$769.0M0.01%
190
AMCAMC ENTMT HLDGS INC
62,500$768.0M0.01%
191
COPCONOCOPHI LLIPS
12,300$767.0M0.01%Put
192
ACORDA THERAPEUTICS INC
49,200$767.0M0.01%Call
193
PVACUSDPENN VA CORP NEW
14,152$765.0M0.01%
194
ATRCATRICURE INC
25,000$765.0M0.01%Call
195
DUNKIN BRANDS GROUP INC
11,900$763.0M0.01%Put
196
NVAXNOVAVAX INC
414,024$762.0M0.01%
197
HRLHORMEL FOODS CORP
17,800$760.0M0.01%Put
198
WESTERN ASSET MTG CAP CORP
91,000$759.0M0.01%Call
199
KODKEASTMAN KODAK CO
296,859$757.0M0.01%
200
WORLDPAY INC
9,900$757.0M0.01%Put
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