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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
301 MANCHESTER UTD PLC NEW ORD CL A 225 4 0.00%
302 CLICKSOFTWARE TECHNOLOGIES L 600 4 0.00% Call
303 TOWN SPORTS INTL HLDGS INC 677 4 0.00%
304 MFC BANCORP LTD 500 4 0.00% Call
305 EXTERRAN PARTNERS LP 200 4 0.00% Call
306 CORESITE RLTY CORP 100 4 0.00% Put
307 GUESS INC 200 4 0.00% Put
308 HEALTHSOUTH CORP 100 4 0.00% Call
309 CURIS INC 2,800 4 0.00% Put
310 UNITED INS HLDGS CORP 200 4 0.00% Call
311 MCG CAPITAL CORP 1,000 4 0.00%
312 ARROWHEAD RESH CORP COM NEW 507 4 0.00%
313 MCG CAPITAL CORP 1,000 4 0.00% Put
314 BIODEL INC 3,000 4 0.00% Call
315 BELLATRIX EXPLORATION LTD 1,000 4 0.00% Call
316 CAESARS ACQUISITION CO 400 4 0.00% Call
317 Intercontinental Hotels Group plc 97 4 0.00%
318 COCA COLA CO 100 4 0.00%
319 ZION OIL & GAS INC 2,613 4 0.00%
320 ZAGG INC 600 4 0.00% Put
321 BROOKFIELD INFRAST PARTNERS 100 4 0.00% Call
322 AERCAP HOLDINGS NV 100 4 0.00% Put
323 ASM INTL N V 100 4 0.00% Put
324 ULTRAGENYX PHARMACEUTICAL IN 100 4 0.00% Put
325 STAR BULK CARRIERS CORP 600 4 0.00% Call
326 UNILEVER N V 100 4 0.00% Call
327 AIRCASTLE LTD 200 4 0.00% Put
328 Support.Com Inc 1,719 4 0.00%
329 XILINX INC 100 4 0.00%
330 SKYWEST INC 300 4 0.00% Put
331 THERAPEUTICSMD INC 1,000 4 0.00% Put
332 CIMATRON LTD CMN STK 500 4 0.00% Call
333 VAPOR CORP NEV 3,000 4 0.00% Call
334 WEST MARINE INC 300 4 0.00% Put
335 WAYFAIR INC 200 4 0.00% Call
336 CONSOLIDATED WATER CO INC ORD 328 4 0.00%
337 TASEKO MINES LTD 3,700 4 0.00% Call
338 CELLCOM ISRAEL LTD 500 4 0.00% Call
339 TAYLOR MORRISON HOME CORP 200 4 0.00% Call
340 HANGER INC 200 4 0.00% Put
341 DAKTRONICS INC 344 4 0.00%
342 APPLIED OPTOELECTRONICS INC 344 4 0.00%
343 NORTH AMERN PALLADIUM LTD 33,247 4 0.00%
344 NYMOX PHARMACEUTICAL CORP 10,969 4 0.00%
345 BPZ RESOURCES INC 12,778 4 0.00%
346 ION GEOPHYSICAL CORP 1,412 4 0.00%
347 GENTHERM INC 100 4 0.00% Put
348 AU OPTRONICS CORP 800 4 0.00% Call
349 MERCURY SYS INC 300 4 0.00% Call
350 AUDIENCE INC 900 4 0.00% Call
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