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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 (2016Q4)
Portfolio Summary: 4,408 holdings with a total value of $10,310,067,000.
#
Name
Shares
Value ($)
%
Options
Notes
101 SPRINT CORP PUT 2,261,800 19,044,000 0.18% Put
102 WILLIAMS COS INC DEL 609,300 18,974,000 0.18% Call
103 AETNA INC NEW 152,100 18,862,000 0.18% Call
104 ISHARES SILVER TRUST 1,237,600 18,700,000 0.18% Put
105 GW PHARMACEUTICALS PLC 165,700 18,517,000 0.18% Put
106 SAREPTA THERAPEUTICS INC 667,000 18,296,000 0.18% Put
107 MOBILEYE N V AMSTELVEEN 479,300 18,271,000 0.18% Put
108 TIME WARNER INC 188,000 18,148,000 0.18% Put
109 BLACKBERRY LTD 2,595,800 17,885,000 0.17% Put
110 UNITED STATES OIL FUND LP 1,506,568 17,657,000 0.17%
111 TECK RESOURCES LTD 880,900 17,644,000 0.17% Put
112 DOLLAR TREE INC 228,300 17,620,000 0.17% Call
113 ENCANA CORP 1,498,800 17,596,000 0.17% Put
114 CONSOL ENERGY INC 961,800 17,534,000 0.17% Put
115 RITE AID CORP 2,105,521 17,349,000 0.17%
116 BARCLAYS BK PLC 680,000 17,347,000 0.17% Call
117 AMERICAN AIRLS GROUP INC 371,500 17,345,000 0.17% Put
118 DEUTSCHE BANK AG 957,227 17,326,000 0.17%
119 ALIBABA GROUP HLDG LTD 196,400 17,246,000 0.17% Call
120 ALIBABA GROUP HLDG LTD 194,500 17,079,000 0.17% Put
121 DOMINOS PIZZA INC 107,000 17,039,000 0.17% Put
122 NEWMONT MINING CORP 499,000 17,001,000 0.16% Call
123 PANDORA MEDIA INC 1,292,700 16,857,000 0.16% Call
124 VALEANT PHARMACEUTICALS INTL 1,160,056 16,844,000 0.16%
125 WHITEWAVE FOODS CO 299,400 16,647,000 0.16% Call
126 LILLY ELI & CO 225,800 16,608,000 0.16% Put
127 OPKO HEALTH INC 1,772,700 16,486,000 0.16% Put
128 NVIDIA CORP PUT 153,600 16,395,000 0.16% Put
129 CIGNA CORPORATION 122,500 16,340,000 0.16% Call
130 HORIZON PHARMA PLC 1,002,900 16,227,000 0.16% Put
131 KINDER MORGAN INC DEL 777,107 16,094,000 0.16%
132 STEEL DYNAMICS INC 451,900 16,079,000 0.16% Call
133 WELLS FARGO & CO NEW 290,600 16,015,000 0.16% Put
134 PFIZER INC 482,708 15,678,000 0.15%
135 CURRENCYSHS BRIT POUND STER 129,600 15,586,000 0.15% Put
136 ALERE INC 399,300 15,561,000 0.15% Put
137 PLAINS ALL AMERN PIPELINE L 481,400 15,544,000 0.15% Call
138 LILLY ELI & CO 210,300 15,468,000 0.15% Call
139 MARATHON PETE CORP 305,100 15,362,000 0.15% Put
140 MYLAN N V 400,300 15,271,000 0.15% Put
141 OCWEN FINL CORP 2,833,200 15,271,000 0.15% Put
142 SM ENERGY CO 442,900 15,271,000 0.15% Put
143 BLACKBERRY LTD 2,212,911 15,247,000 0.15%
144 BARRICK GOLD CORP 948,500 15,157,000 0.15% Call
145 VMWARE INC 192,400 15,148,000 0.15% Put
146 SYNCHRONY FINL 415,100 15,056,000 0.15% Put
147 RITE AID CORP 1,826,200 15,048,000 0.15% Call
148 BRISTOL MYERS SQUIBB CO 257,100 15,025,000 0.15% Put
149 BLACKSTONE GROUP L P 549,900 14,864,000 0.14% Call
150 CONSOL ENERGY INC 810,758 14,780,000 0.14%
Page 3 of 89

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0000932540-17-000002, filed 2017.02.15).

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.