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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
1 TESLA MTRS INC PUT 1,466,100 313,291,000 3.04% Put
2 HUMANA INC 965,300 196,950,000 1.91% Put
3 TESLA MTRS INC 568,100 121,397,000 1.18% Call
4 ALLERGAN PLC 552,100 115,947,000 1.12% Put
5 JD COM INC 3,862,800 98,270,000 0.95% Call
6 CHARTER COMMUNICATIONS INC N 333,000 95,877,000 0.93% Call
7 HUMANA INC 462,800 94,425,000 0.92% Call
8 ALLERGAN PLC 428,000 89,884,000 0.87% Call
9 SEAWORLD ENTMT INC 4,726,800 89,478,000 0.87% Put
10 HUMANA 371,316 75,760,000 0.73%
11 CHARTER COMMUNICATIONS INC N 252,000 72,556,000 0.70% Put
12 MONDELEZ INTL INC 1,538,600 68,206,000 0.66% Put
13 ADVANCED MICRO DEVICES INC 5,685,600 64,475,000 0.63% Put
14 VANECK VECTORS ETF TR 3,005,100 62,867,000 0.61% Put
15 BANK AMER CORP CALL 2,808,500 62,068,000 0.60% Call
16 DEUTSCHE BANK AG PUT 3,354,900 60,724,000 0.59% Put
17 VANECK VECTORS ETF TR 2,842,800 59,471,000 0.58% Call
18 ENERGY TRANSFER EQUITY L P 2,985,200 57,644,000 0.56% Call
19 BARCLAYS BK PLC 2,219,800 56,627,000 0.55% Put
20 FREEPORT-MCMORAN INC 4,077,300 53,780,000 0.52% Put
21 WELLS FARGO CO NEW 960,300 52,922,000 0.51% Call
22 BARRICK GOLD CORP 3,288,600 52,552,000 0.51% Put
23 TEVA PHARMACEUTICAL INDS LTD 1,424,100 51,624,000 0.50% Put
24 AMERICAN AIRLS GROUP INC 1,091,900 50,981,000 0.49% Call
25 TEVA PHARMACEUTICAL INDUSTRIES LTD 1,405,400 50,946,000 0.49% Call
26 Bank of America Corporation Put Opt 01/17 15.0 2,227,400 49,226,000 0.48% Put
27 BARRICK GOLD CORP 2,883,439 46,077,000 0.45%
28 AK STL HLDG CORP 4,413,800 45,065,000 0.44% Call
29 VALE S A 5,875,600 44,772,000 0.43% Put
30 UNITED STATES STL CORP NEW 1,326,100 43,775,000 0.42% Put
31 ALLERGAN PLC 205,507 43,159,000 0.42%
32 SEAWORLD ENTERTAINMENT INCORPORATED 2,268,525 42,943,000 0.42%
33 PFIZER INC 1,300,200 42,231,000 0.41% Put
34 ABBVIE INC 651,000 40,766,000 0.40% Call
35 JD COM INC 1,545,700 39,323,000 0.38% Put
36 KINDER MORGAN INC DEL 1,861,100 38,543,000 0.37% Call
37 TWITTER INC 2,301,300 37,511,000 0.36% Put
38 MONSANTO CALL 356,500 37,507,000 0.36% Call
39 KRAFT HEINZ CO 420,400 36,709,000 0.36% Call
40 UNITED STATES OIL FUND LP 3,087,900 36,190,000 0.35% Call
41 MONDELEZ INTL INC 808,300 35,832,000 0.35% Call
42 VANECK ETF TRUST 1,708,017 35,732,000 0.35%
43 WESTERN DIGITAL CORP 509,500 34,621,000 0.34% Put
44 JD COM INC ADR 1,355,992 34,496,000 0.33%
45 KRAFT HEINZ CO 375,100 32,754,000 0.32% Put
46 NXP SEMICONDUCTORS N V 329,000 32,245,000 0.31% Call
47 MONSANTO CO NEW 306,200 32,215,000 0.31% Put
48 CIGNA CORPORATION 239,600 31,960,000 0.31% Put
49 ENERGY TRANSFER EQUITY L P 1,654,000 31,939,000 0.31% Put
50 ADVANCED MICRO DEVICES INC 2,738,900 31,059,000 0.30% Call
Page 1 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.