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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)
Portfolio Summary: 4,616 holdings with a total value of $8,452,428,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 ALLERGAN PLC 831,300 192,105,000 2.27% Put
2 KRAFT HEINZ CO 1,841,500 162,936,000 1.93% Call
3 ALLERGAN PLC 637,100 147,227,000 1.74% Call
4 JD COM INC 4,394,100 93,287,000 1.10% Call
5 ALLERGAN PLC 362,883 83,859,000 0.99%
6 VANECK VECTORS ETF TR 2,909,900 80,604,000 0.95% Put
7 CHARTER COMMUNICATIONS INC N 337,400 77,143,000 0.91% Call
8 VANECK VECTORS ETF TR 2,254,000 62,436,000 0.74% Call
9 ENERGY TRANSFER EQUITY L P 4,236,600 60,880,000 0.72% Call
10 SEAWORLD ENTMT INC 4,052,300 58,069,000 0.69% Put
11 BARRICK GOLD CORP 2,674,500 57,101,000 0.68% Put
12 QIHOO 360 TECHNOLOGY CO LTD 773,100 56,475,000 0.67% Put
13 SHIRE PLC 284,000 52,279,000 0.62% Put
14 FREEPORT-MCMORAN INC 4,494,900 50,073,000 0.59% Put
15 MONDELEZ INTL INC 1,079,500 49,128,000 0.58% Put
16 HUMANA INC 261,900 47,111,000 0.56% Put
17 CIGNA CORPORATION 360,500 46,140,000 0.55% Put
18 BARRICK GOLD CORP 2,148,279 45,866,000 0.54%
19 EXXON MOBIL CORP 474,200 44,452,000 0.53% Call
20 SHIRE PLC 230,400 42,412,000 0.50% Call
21 MONSANTO CALL 402,900 41,664,000 0.49% Call
22 ABBVIE INC 654,800 40,539,000 0.48% Put
23 SEAWORLD ENTERTAINMENT INCORPORATED 2,817,534 40,375,000 0.48%
24 ENERGY TRANSFER EQUITY L P 2,742,500 39,410,000 0.47% Put
25 SPDR GOLD TRUST 305,400 38,639,000 0.46% Call
26 E M C CORP MASS 1,411,500 38,350,000 0.45% Put
27 SOLARCITY CORP 1,574,700 37,683,000 0.45% Call
28 DIAMOND RESORTS INTERNATIONAL INC 1,248,100 37,393,000 0.44% Call
29 Mobileye NV 778,100 35,902,000 0.42% Put
30 HUMANA INC 195,200 35,113,000 0.42% Call
31 WELLS FARGO CO NEW 719,500 34,054,000 0.40% Call
32 PFIZER INC 952,700 33,545,000 0.40% Put
33 QIHOO 360 TECHNOLOGY CO LTD CALL 459,000 33,530,000 0.40% Call
34 KINDER MORGAN INC DEL 1,789,000 33,490,000 0.40% Put
35 GENERAL ELECTRIC CO 1,004,100 31,609,000 0.37% Call
36 JD COM INC 1,475,600 31,327,000 0.37% Put
37 RANGE RES CORP 719,900 31,056,000 0.37% Put
38 MONSANTO CO NEW 299,100 30,930,000 0.37% Put
39 VALEANT PHARMACEUTICALS INTL 1,503,300 30,276,000 0.36% Call
40 TWITTER INC 1,698,700 28,725,000 0.34% Put
41 CHARTER COMMUNICATIONS INC N 124,700 28,511,000 0.34% Put
42 SAREPTA THERAPEUTICS INC CALL 1,476,500 28,157,000 0.33% Call
43 CHESAPEAKE ENERGY CORP 6,574,500 28,139,000 0.33% Put
44 WESTERN DIGITAL CORP 591,900 27,973,000 0.33% Put
45 UNITED STATES OIL FUND LP 2,403,000 27,803,000 0.33% Call
46 AMERICAN AIRLS GROUP INC 977,400 27,670,000 0.33% Call
47 KINDER MORGAN INC DEL 1,478,100 27,670,000 0.33% Call
48 PFIZER INC 781,000 27,499,000 0.33% Call
49 SOLARCITY CORP 1,098,800 26,294,000 0.31% Put
50 ADVANCED MICRO DEVICES INC 4,896,800 25,170,000 0.30% Put
Page 1 of 93

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0000932540-16-000023, filed 2016.08.12).

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.