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Institutional Investment Manager
GROUP ONE TRADING LLC
GROUP ONE TRADING LLC (CIK: 0000932540) incorporated in Delaware, located at 425 S Financial Place, Chicago, IL. Institutional holdings reported to the SEC.

Institutional Holdings (2014Q4)
Original 13F HR (0000932540-15-000002) filed in 2015.02.11
#
Name
Shares
Value ($)
%
Options
Notes
101 LUXOTTICA GRP ADR 12 1 0.00%
102 FUEL SYS SOLUTIONS INC 100 1 0.00% Call
103 STRATA SKIN SCIENCES INC COM 793 1 0.00%
104 BRUKER CORP 72 1 0.00%
105 BROOKS AUTOMATION INC 100 1 0.00% Call
106 Au Optronics Corp. Sponsored ADR 200 1 0.00%
107 BROCADE COMMUNICATIONS SYS I 100 1 0.00% Put
108 HIGHER ONE HLDGS INC COM 200 1 0.00%
109 MCCLATCHY CO 200 1 0.00% Call
110 MEDIFAST INC COM 32 1 0.00%
111 HIGHER ONE HLDGS INC 200 1 0.00% Call
112 FEMALE HEALTH CO 300 1 0.00% Put
113 MITSUBISHI UFJ FINL GROUP IN 100 1 0.00% Call
114 MAKEMYTRIP LIMITED MAURITIUS 26 1 0.00%
115 MODUSLINK GLOBAL SOLUTIONS INC 200 1 0.00%
116 MODUSLINK GLOBAL SOLUTIONS I 200 1 0.00% Put
117 CNH INDL N V 100 1 0.00%
118 NATIONAL CINEMEDIA INC 100 1 0.00% Call
119 NAVIDEA BIOPHARMACEUTICALS I 400 1 0.00% Call
120 GLOBAL CASH ACCESS HLDGS INC 100 1 0.00%
121 NETSOL 278 1 0.00%
122 NYMOX PHARMACEUTICAL CORP 2,800 1 0.00% Call
123 OCEAN PWR TECHNOLOGIES INC 2,000 1 0.00% Call
124 Oncolytics Biotech Inc 2,430 1 0.00%
125 ONCONOVA THERAPEUTICS INC 200 1 0.00% Call
126 CHINA BAK BATTERY INC 500 1 0.00% Put
127 PNM RES INC 31 1 0.00%
128 ACETO CORP 48 1 0.00%
129 CAMTEK LTD 300 1 0.00% Call
130 PERMIAN BASIN RTY TR 100 1 0.00% Call
131 BANKRATE INC DEL 100 1 0.00% Put
132 MITEL NETWORKS CORP 169 2 0.00%
133 CAPITAL PRODUCT PARTNERS L P 200 2 0.00% Put
134 CAPITAL PRODUCT PARTNERS L P 300 2 0.00%
135 AVAGO TECHNOLOGIES LTD SHS 22 2 0.00%
136 ROSETTA GENOMICS LTD 900 2 0.00% Put
137 CERAGON NETWORKS LTD 1,785 2 0.00%
138 ACETO CORP 100 2 0.00% Call
139 CVENT INC COM 78 2 0.00%
140 PARAGON OFFSHORE PLC 600 2 0.00% Put
141 ACTINIUM PHARMACEUTICALS INC 400 2 0.00% Call
142 ALPHA & OMEGA SEMICONDUCTOR 200 2 0.00% Put
143 CHINA YUCHAI INTL LTD 100 2 0.00% Call
144 ZEP INC 100 2 0.00% Call
145 XUNLEI LTD SPONSORED ADR 309 2 0.00%
146 DIGI INTL INC 200 2 0.00% Call
147 WET SEAL INC 32,490 2 0.00%
148 WEST MARINE INC COM 150 2 0.00%
149 WAVE SYSTEMS CORP CMN STK 2,400 2 0.00% Put
150 DOCUMENT SEC SYS INC 5,200 2 0.00% Put
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