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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
251 ENLINK MIDSTREAM PARTNERS LP 100 3 0.00% Call
252 ORAMED PHARM INC 700 3 0.00% Put
253 PRESTIGE BRANDS HLDGS INC 100 3 0.00% Call
254 AMERICAN HOMES 4 RENT 200 3 0.00% Put
255 AMYRIS INC 1,300 3 0.00% Put
256 Atlas Air Worldwide Hl 54 3 0.00%
257 SORL AUTO PTS INC 900 3 0.00% Put
258 TAL ED GROUP 100 3 0.00% Call
259 SLM CORP 300 3 0.00% Put
260 ODYSSEY MARINE EXPL INC CMN STOCK 2,900 3 0.00% Put
261 ELECTRONICS FOR IMAGING INC 79 3 0.00%
262 JAVELIN MTG INVT CORP 300 3 0.00% Put
263 Rubicon Minerals Corp 3,074 3 0.00%
264 EVOLUTION PETROLEUM CORP 400 3 0.00% Put
265 The Meet Group, Inc. 2,161 3 0.00%
266 VEECO INSTRS INC DEL 100 3 0.00% Put
267 PAYLOCITY HLDG CORP 100 3 0.00% Put
268 TASEKO MINES LTD 3,000 3 0.00% Put
269 SUNSHINE HEART INC 779 3 0.00%
270 BANCO SANTANDER BRASIL S A 500 3 0.00% Put
271 MILLER HERMAN INC 100 3 0.00% Call
272 HARRIS & HARRIS GROUP INC 1,100 3 0.00% Put
273 SHARPS COMPLIANCE CORP 700 3 0.00% Call
274 APOLLO COML REAL EST FIN INC 200 3 0.00%
275 HEALTHSTREAM INC 100 3 0.00% Call
276 ANTHERA PHARMACEUTICALS INC 2,000 3 0.00% Put
277 GRIFOLS S A 100 3 0.00% Call
278 JAVELIN MTG INVT CORP 294 3 0.00%
279 BPZ RESOURCES INC 12,000 3 0.00% Put
280 SPARK NETWORKS INC 903 3 0.00%
281 TRANSOCEAN PARTNERS LLC 200 3 0.00%
282 ASANKO GOLD INC 2,000 3 0.00% Call
283 DUPONT FABROS TECHNOLOGY INC 100 3 0.00% Call
284 REGADO BIOSCIENCES INC 3,300 3 0.00%
285 ALUMINUM CORP CHINA LTD 300 3 0.00% Call
286 Durect Corp Com 3,227 3 0.00%
287 REVOLUTION LIGHTING TECHNOLOGI 2,200 3 0.00% Call
288 ECLIPSE RES CORP 400 3 0.00% Call
289 UNIVERSAL TECHNICAL INST INC 300 3 0.00%
290 REAL GOODS SOLAR INC 6,800 3 0.00% Call
291 AVALON RARE METALS INC COM DELETED 15,020 3 0.00%
292 EXTERRAN PARTNERS LP 200 4 0.00% Call
293 TASEKO MINES LTD 3,700 4 0.00% Call
294 MFC BANCORP LTD 500 4 0.00% Call
295 AU OPTRONICS CORP 800 4 0.00% Call
296 SPARK NETWORKS INC 1,000 4 0.00% Put
297 TAYLOR MORRISON HOME CORP 200 4 0.00% Call
298 VOYA FINL INC 100 4 0.00% Call
299 THERAPEUTICSMD INC 1,000 4 0.00% Put
300 CELLCOM ISRAEL LTD 500 4 0.00% Call
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