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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 (2016Q3)
Portfolio Summary: 4,531 holdings with a total value of $9,214,013,000.
#
Name
Shares
Value ($)
%
Options
Notes
51 WESTERN DIGITAL CORP 534,600 31,258,000 0.34% Put
52 VALEANT PHARMACEUTICALS INTL 1,269,900 31,176,000 0.34% Put
53 VALE S A 5,571,600 30,644,000 0.33% Put
54 GOLDCORP INC NEW 1,843,500 30,455,000 0.33% Call
55 Mobileye Nv Call Opt 09/17 48.0 681,000 28,990,000 0.31% Call
56 RANGE RES CORP 719,400 27,877,000 0.30% Put
57 UNITED STATES STL CORP NEW 1,438,200 27,124,000 0.29% Put
58 Advanced Micro Devices 3,906,354 26,993,000 0.29%
59 ALIBABA GROUP HLDG LTD 253,700 26,839,000 0.29% Call
60 WELLS FARGO CO NEW 598,500 26,502,000 0.29% Call
61 ABBVIE INC 409,600 25,833,000 0.28% Put
62 CTRIP COM INTL LTD 524,900 24,445,000 0.27% Call
63 KOHLS CORP 549,400 24,036,000 0.26% Put
64 WILLIAMS COS INC DEL 764,800 23,502,000 0.26% Call
65 BANK AMER CORP 1,501,500 23,498,000 0.26% Put
66 KRAFT HEINZ CO 258,100 23,103,000 0.25% Put
67 CONSOL ENERGY INC 1,200,217 23,044,000 0.25%
68 EXXON MOBIL CORP CALL 261,300 22,806,000 0.25% Call
69 CONSOL ENERGY INC 1,176,900 22,596,000 0.25% Put
70 KINDER MORGAN INC DEL 968,500 22,401,000 0.24% Put
71 GENERAL ELECTRIC CO 748,400 22,168,000 0.24% Put
72 SOLARCITY CORP 1,127,400 22,052,000 0.24% Put
73 ABBVIE INC 347,100 21,892,000 0.24% Call
74 OPKO HEALTH INC 2,021,900 21,412,000 0.23% Call
75 TRANSOCEAN LTD 1,964,700 20,944,000 0.23% Put
76 PFIZER INC 614,400 20,810,000 0.23% Call
77 TEVA PHARMACEUTICAL INDS LTD 451,000 20,751,000 0.23%
78 CURRENCYSHS BRIT POUND STER 163,300 20,674,000 0.22% Put
79 ISHARES SILVER TRUST 1,131,800 20,599,000 0.22% Put
80 YY INC 377,500 20,113,000 0.22% Put
81 MONDELEZ INTL INC 456,452 20,038,000 0.22%
82 CHESAPEAKE ENERGY CORP 3,170,800 19,881,000 0.22% Call
83 TRINA SOLAR LIMITED 1,888,300 19,336,000 0.21% Put
84 T MOBILE US INC 413,100 19,300,000 0.21% Call
85 ENERGY TRANSFER PRTNRS L P 508,400 18,811,000 0.20% Call
86 BARCLAYS BK PLC 547,900 18,667,000 0.20% Call
87 GILEAD SCIENCES INC 234,200 18,530,000 0.20% Put
88 UNITED STATES OIL FUND LP 1,679,600 18,358,000 0.20% Put
89 FREEPORT-MCMORAN INC 1,681,984 18,266,000 0.20%
90 HERBALIFE LTD 293,900 18,219,000 0.20% Put
91 BLACKBERRY LTD 2,274,300 18,149,000 0.20% Put
92 AETNA INC NEW 155,800 17,987,000 0.20% Put
93 LENDINGCLUB CORP 2,906,800 17,964,000 0.19% Put
94 TRANSOCEAN LTD 1,677,900 17,886,000 0.19% Call
95 EXXON MOBIL CORP 203,200 17,735,000 0.19% Put
96 INTEROIL CORP 347,100 17,674,000 0.19% Put
97 NEWMONT MINING CORP 449,600 17,665,000 0.19% Call
98 WASTE MGMT INC DEL 276,600 17,636,000 0.19% Call
99 AK STL HLDG CORP 3,595,900 17,368,000 0.19% Call
100 BIOMARIN PHARMACEUTICAL INC 187,000 17,301,000 0.19% Put
Page 2 of 91

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0000932540-16-000025, filed 2016.11.14).

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.