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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
1 ALLERGAN PLC 719,500 165,708,000 1.80% Put
2 HUMANA INC 851,900 150,693,000 1.64% Put
3 ALLERGAN PLC 490,100 112,875,000 1.23% Call
4 JD COM INC 3,612,500 94,250,000 1.02% Call
5 MONSANTO CALL 880,600 89,997,000 0.98% Call
6 CHARTER COMMUNICATIONS INC N 308,200 83,205,000 0.90% Call
7 KRAFT HEINZ CO 916,100 82,000,000 0.89% Call
8 VANECK VECTORS ETF TR 3,015,300 79,694,000 0.86% Put
9 SAREPTA THERAPEUTICS INC CALL 1,092,200 67,072,000 0.73% Call
10 CHARTER COMMUNICATIONS INC N 243,600 65,765,000 0.71% Put
11 SEAWORLD ENTMT INC 4,719,300 63,616,000 0.69% Put
12 HUMANA INC 348,400 61,628,000 0.67% Call
13 SAREPTA THERAPEUTICS INC 1,003,100 61,600,000 0.67% Put
14 VANECK VECTORS ETF TR 2,163,900 57,192,000 0.62% Call
15 ALLERGAN PLC 247,732 57,055,000 0.62%
16 ENERGY TRANSFER EQUITY L P 3,234,500 54,307,000 0.59% Call
17 SEAWORLD ENTERTAINMENT INCORPORATED 3,954,610 53,308,000 0.58%
18 MONSANTO CO NEW 510,200 52,142,000 0.57% Put
19 TWITTER INC 2,171,700 50,058,000 0.54% Put
20 TWITTER INC 2,120,100 48,868,000 0.53% Call
21 MONDELEZ INTL INC 1,098,300 48,215,000 0.52% Put
22 BARRICK GOLD CORP 2,694,600 47,748,000 0.52% Put
23 BARCLAYS BK PLC 1,382,300 47,095,000 0.51% Put
24 BARRICK GOLD CORP 2,561,726 45,394,000 0.49%
25 GW PHARMACEUTICALS PLC 322,900 42,859,000 0.47% Put
26 DEUTSCHE BANK AG PUT 3,191,000 41,770,000 0.45% Put
27 VALEANT PHARMACEUTICALS INTL 1,699,000 41,710,000 0.45% Call
28 CIGNA CORPORATION 313,600 40,868,000 0.44% Put
29 KINDER MORGAN INC DEL 1,737,800 40,195,000 0.44% Call
30 YY INC 748,300 39,869,000 0.43% Call
31 GW PHARMACEUTICALS PLC 296,900 39,408,000 0.43% Call
32 AMERICAN AIRLS GROUP INC 1,071,400 39,224,000 0.43% Call
33 JD COM INC 1,488,700 38,840,000 0.42% Put
34 WHITEWAVE FOODS CO 696,100 37,889,000 0.41% Call
35 HUMANA 211,453 37,404,000 0.41%
36 GENERAL ELECTRIC CO 1,248,000 36,966,000 0.40% Call
37 FREEPORT-MCMORAN INC 3,370,500 36,604,000 0.40% Put
38 ENERGY TRANSFER EQUITY L P 2,169,800 36,431,000 0.40% Put
39 ISHARES SILVER TR 1,988,025 36,182,000 0.39%
40 DELL TECHNOLOGIES INC 754,900 36,084,000 0.39% Put
41 PFIZER INC 1,057,400 35,814,000 0.39% Put
42 ADVANCED MICRO DEVICES INC 5,094,900 35,206,000 0.38% Put
43 ISHARES SILVER TRUST 1,896,700 34,520,000 0.37% Call
44 TWITTER INC 1,494,087 34,439,000 0.37%
45 VANECK ETF TRUST 1,292,920 34,172,000 0.37%
46 UNITED STATES OIL FUND LP 3,093,000 33,806,000 0.37% Call
47 JD COM INC ADR 1,254,157 32,721,000 0.36%
48 MONDELEZ INTL INC 731,300 32,104,000 0.35% Call
49 TEVA PHARMACEUTICAL INDS LTD 690,900 31,788,000 0.34% Put
50 CHESAPEAKE ENERGY CORP 5,013,700 31,436,000 0.34% Put
Page 1 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.