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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 (2016Q2)
Original 13F HR (0000932540-16-000023) filed in 2016.08.12
#
Name
Shares
Value ($)
%
Options
Notes
1 CHESAPEAKE ENERGY CORP 6,574,500 28,139 0.33% Put
2 MANNKIND CORP 5,899,700 6,844 0.08% Call
3 ADVANCED MICRO DEVICES INC 4,896,800 25,170 0.30% Put
4 VALE S A 4,848,100 24,531 0.29% Put
5 FREEPORT-MCMORAN INC 4,494,900 50,073 0.59% Put
6 JD COM INC 4,394,100 93,287 1.10% Call
7 ENERGY TRANSFER EQUITY L P 4,236,600 60,880 0.72% Call
8 GALENA BIOPHARMA INC 4,103,700 1,913 0.02% Call
9 SEAWORLD ENTMT INC 4,052,300 58,069 0.69% Put
10 GLOBALSTAR INC 3,860,400 4,671 0.06% Call
11 LENDINGCLUB CORP 3,627,800 15,600 0.18% Put
12 Advanced Micro Devices 3,562,193 18,310 0.22%
13 HALCON RES CORP 3,300,700 1,532 0.02% Call
14 CHESAPEAKE ENERGY CORP 3,263,800 13,969 0.17% Call
15 YAMANA GOLD INC 3,035,600 15,785 0.19% Put
16 SEADRILL LIMITED 2,918,500 9,456 0.11% Put
17 VANECK VECTORS SEMICONDUCTOR 2,909,900 80,604 0.95% Put
18 AK STL HLDG CORP 2,841,700 13,242 0.16% Call
19 SEAWORLD ENTERTAINMENT INCORPORATED 2,817,534 40,375 0.48%
20 CHESAPEAKE ENERGY CORP 2,751,493 11,776 0.14%
21 ENERGY TRANSFER EQUITY L P 2,742,500 39,410 0.47% Put
22 SEADRILL LIMITED 2,698,900 8,744 0.10% Call
23 BARRICK GOLD CORP 2,674,500 57,101 0.68% Put
24 UNITED STATES OIL FUND LP 2,403,000 27,803 0.33% Call
25 SIRIUS XM HLDGS INC 2,356,800 9,309 0.11% Call
26 FRONTIER COMMUNICATIONS CORP 2,277,500 11,251 0.13% Call
27 VANECK VECTORS ETF TR 2,254,000 62,436 0.74% Call
28 VALE S A 2,209,400 11,180 0.13% Call
29 OFFICE DEPOT INC 2,202,500 7,290 0.09% Call
30 BLACKBERRY LTD 2,192,100 14,709 0.17% Put
31 BARRICK GOLD CORP 2,148,279 45,866 0.54%
32 MANNKIND CORP 2,106,500 2,444 0.03% Put
33 OFFICE DEPOT INC 2,089,300 6,916 0.08% Put
34 TRANSOCEAN LTD 2,031,300 24,152 0.29% Put
35 BLACKBERRY LTD 2,020,670 13,559 0.16%
36 EXELIXIS INC 1,889,000 14,753 0.17% Call
37 KRAFT HEINZ CO 1,841,500 162,936 1.93% Call
38 OPKO HEALTH INC 1,793,700 16,753 0.20% Call
39 KINDER MORGAN INC DEL 1,789,000 33,490 0.40% Put
40 KINROSS GOLD CORP 1,752,000 8,567 0.10% Call
41 TWITTER INC 1,698,700 28,725 0.34% Put
42 FREEPORT-MCMORAN INC 1,685,996 18,782 0.22%
43 VALE S A 1,677,602 8,489 0.10%
44 UNITED STATES NATL GAS FUND 1,651,980 14,273 0.17%
45 LENDINGCLUB CORP 1,632,000 7,018 0.08% Call
46 ALCOA INC 1,604,900 14,877 0.18% Put
47 SOLARCITY CORP 1,574,700 37,683 0.45% Call
48 OCWEN FINL CORP 1,533,000 2,621 0.03% Call
49 VALEANT PHARMACEUTICALS INTL 1,503,300 30,276 0.36% Call
50 TRANSOCEAN LTD 1,489,000 17,704 0.21% Call
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