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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
151 ENZON PHARMACEUTICALS INC 2,098 2 0.00%
152 BANK OF NOVA SCOTIA F 38 2 0.00%
153 CECO ENVIRONMENTAL CORP 100 2 0.00% Call
154 RUBICON PROJ INC 141 2 0.00%
155 NTELOS HLDGS CORP 500 2 0.00% Put
156 NVIDIA CORPORATION 100 2 0.00%
157 WAVE SYSTEMS CORP CMN STK 2,400 2 0.00% Put
158 ACETO CORP 100 2 0.00% Call
159 CTI BIOPHARMA 1,018 2 0.00%
160 ACTINIUM PHARMACEUTICALS INC 400 2 0.00% Call
161 NYMOX PHARMACEUTICAL CORP 6,000 2 0.00% Put
162 BOINGO WIRELESS INC COM 200 2 0.00%
163 OCEAN POWER TECHNOLOGIES INC 3,600 2 0.00% Put
164 Odyssey Marine Exploration Inc 2,042 2 0.00%
165 CERAGON NETWORKS LTD 1,785 2 0.00%
166 M/I HOMES INC 73 2 0.00%
167 GENIE ENERGY LTD CL B 296 2 0.00%
168 SUNCOKE ENERGY INC 100 2 0.00% Put
169 ONCOGENEX PHARMACEUTICALS IN 800 2 0.00% Call
170 MORGANS HOTEL GROUP CO 300 2 0.00%
171 GLADSTONE CAPITAL CORP 200 2 0.00% Call
172 ONCOLYTICS BIOTECH INC 3,000 2 0.00% Put
173 ASTROTECH CORP 900 2 0.00%
174 REDIFF COM INDIA LTD 800 2 0.00% Call
175 RXI PHARMACEUTICALS CORP NEW 1,200 2 0.00% Put
176 ALPHA & OMEGA SEMICONDUCTOR 200 2 0.00% Put
177 EXTREME NETWORKS INC 500 2 0.00% Put
178 ASCENT SOLAR TECHNOLOGIES IN 2,200 2 0.00%
179 SUNCOKE ENERGY INC 100 2 0.00% Call
180 NAVISTAR INTL CORP NEW 51 2 0.00%
181 ARTESIAN RESOURCES CORP 100 2 0.00% Put
182 LIGHTINTHEBOX HLDG CO LTD 300 2 0.00% Put
183 LIFELOCK INC 100 2 0.00% Put
184 DUKE REALTY CORP 100 2 0.00% Put
185 ORBITZ WORLDWIDE INC 200 2 0.00% Call
186 ARQULE INC 1,328 2 0.00%
187 TIM PARTICIPACOES S A 100 2 0.00% Put
188 DRDGOLD LIMITED 1,000 2 0.00% Put
189 DRDGOLD LIMITED 1,100 2 0.00%
190 CHEGG INC 230 2 0.00%
191 DOCUMENT SEC SYS INC 5,200 2 0.00% Put
192 TIVO INC 200 2 0.00% Call
193 FIRST BANCORP P R 400 2 0.00% Call
194 CHINA YUCHAI INTL LTD 100 2 0.00% Call
195 CHENIERE ENERGY PTNRS LP HLD 100 2 0.00%
196 PGT INNOVATIONS INC 200 2 0.00% Put
197 KEYW HLDG CORP 200 2 0.00% Call
198 CHINA NEPSTAR CHAIN DRUGSTOR 1,000 2 0.00% Put
199 DIGI INTL INC 200 2 0.00% Call
200 KELLY SVCS INC 100 2 0.00% Put
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