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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 (2016Q1)
Original 13F HR (0000932540-16-000021) filed in 2016.05.12
#
Name
Shares
Value ($)
%
Options
Notes
51 OPKO HEALTH INC 1,459,100 15,160 0.21% Call
52 OFFICE DEPOT INC 1,432,943 10,174 0.14%
53 UNITED STATES NATL GAS FUND 1,421,889 9,470 0.13%
54 OPKO HEALTH INC 1,409,100 14,641 0.21% Put
55 SEAWORLD ENTMT INC 1,387,000 29,210 0.41% Put
56 BARRICK GOLD CORP 1,343,300 18,242 0.26% Call
57 BANK AMERICA CORP 1,332,694 18,018 0.25%
58 VALE S A 1,304,725 5,493 0.08%
59 BARCLAYS BK PLC 1,272,100 22,402 0.32% Put
60 ENERGY XXI LTD 1,263,300 787 0.01% Call
61 OCWEN FINL CORP 1,249,261 3,086 0.04%
62 MONDELEZ INTL INC 1,233,600 49,492 0.70% Put
63 YAMANA GOLD INC 1,214,349 3,692 0.05%
64 UNITED STATES NATL GAS FUND 1,183,200 7,880 0.11% Put
65 OPKO HEALTH INC 1,173,530 12,193 0.17%
66 UNITED STATES STL CORP NEW 1,114,600 17,889 0.25% Call
67 TWITTER INC 1,112,000 18,404 0.26% Put
68 TWITTER INC 1,110,000 18,371 0.26% Call
69 OFFICE DEPOT INC 1,094,600 7,772 0.11% Put
70 E M C CORP MASS 1,063,100 28,332 0.40% Put
71 EXELIXIS INC 1,061,500 4,246 0.06% Call
72 FREEPORT-MCMORAN INC 1,044,500 10,800 0.15% Call
73 MARATHON OIL CORP 1,040,000 11,586 0.16% Call
74 MARATHON OIL CORP 1,025,000 11,419 0.16% Put
75 UNITED STATES OIL FUND LP 1,018,547 9,880 0.14%
76 GENERAL ELECTRIC CO 1,013,900 32,232 0.46% Call
77 AMERICAN AIRLS GROUP INC 1,012,500 41,523 0.59% Call
78 Alcoa Inc 1,000,563 9,585 0.14%
79 AVON PRODS INC 996,400 4,793 0.07% Put
80 Cypress Semiconductor Corp Call Opt 06/17 13.0 976,900 8,460 0.12% Call
81 PENN WEST PETE LTD NEW 968,157 900 0.01%
82 ENERGY TRANSFER EQUITY L P 961,000 6,852 0.10% Put
83 BANCO SANTANDER SA 926,200 4,038 0.06% Put
84 PROSPECT CAPITAL CORPORATION 843,200 6,130 0.09% Put
85 PFIZER INC 837,300 24,818 0.35% Put
86 YPF SOCIEDAD ANONIMA 812,400 14,526 0.21% Put
87 NQ MOBILE INC 806,024 3,692 0.05%
88 GOLDCORP INC NEW 801,900 13,015 0.18% Put
89 BLACKBERRY LTD 797,700 6,453 0.09% Call
90 NOKIA CORP 793,600 4,690 0.07% Put
91 SOLARCITY CORP 786,100 19,322 0.27% Put
92 CONSOL ENERGY INC 783,300 8,843 0.12% Put
93 SIRIUS XM HLDGS INC 781,700 3,088 0.04% Call
94 PENNEY J C INC 780,600 8,633 0.12% Call
95 EXCO RESOURCES INC 778,700 770 0.01% Call
96 KINDER MORGAN INC DEL 777,800 13,892 0.20% Put
97 RITE AID CORP 769,700 6,273 0.09% Put
98 TECK RESOURCES LTD 761,900 5,798 0.08% Put
99 PFIZER INC 748,500 22,186 0.31% Call
100 CLIFFS NAT RES INC 745,400 2,236 0.03% Put
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