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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)
Portfolio Summary: 4,548 holdings with a total value of $7,083,142,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 ALLERGAN PLC 529,200 141,841,000 2.00% Put
2 KRAFT HEINZ CO 1,689,700 132,743,000 1.87% Call
3 SPDR GOLD TRUST 692,600 81,450,000 1.15% Call
4 ALLERGAN PLC 239,100 64,086,000 0.90% Call
5 CHARTER COMMUNICATIONS INC D 265,200 53,684,000 0.76% Call
6 MONDELEZ INTL INC 1,233,600 49,492,000 0.70% Put
7 JD COM INC 1,724,500 45,699,000 0.65% Call
8 EXXON MOBIL CORP 541,100 45,231,000 0.64% Call
9 FREEPORT-MCMORAN INC 4,315,400 44,621,000 0.63% Put
10 ALLERGAN PLC 161,093 43,178,000 0.61%
11 AMERICAN AIRLS GROUP INC 1,012,500 41,523,000 0.59% Call
12 VALEANT PHARMACEUTICALS INTL PUT 1,551,900 40,815,000 0.58% Put
13 VALEANT PHARMACEUTICALS INTL 1,548,900 40,736,000 0.58% Call
14 TIME WARNER CABLE INC 186,200 38,100,000 0.54% Call
15 BARRICK GOLD CORP 2,712,200 36,832,000 0.52% Put
16 YUM BRANDS INC 423,000 34,623,000 0.49% Call
17 MARKET VECTORS ETF TR GOLD MINER ETF 1,692,200 33,810,000 0.48% Call
18 MARKET VECTORS ETF TR GOLD MINER ETF 1,653,100 33,029,000 0.47% Put
19 21VIANET GROUP INC 1,646,500 32,881,000 0.46% Put
20 GENERAL ELECTRIC CO 1,013,900 32,232,000 0.46% Call
21 CHESAPEAKE ENERGY CORP 7,634,400 31,454,000 0.44% Put
22 UNITED STATES STL CORP NEW 1,927,200 30,932,000 0.44% Put
23 SCHLUMBERGER LTD 414,400 30,562,000 0.43% Put
24 ABBVIE INC 526,100 30,051,000 0.42% Put
25 21VIANET GROUP INC 1,474,439 29,445,000 0.42%
26 SEAWORLD ENTMT INC 1,387,000 29,210,000 0.41% Put
27 QIHOO 360 TECHNOLOGY CO LTD 376,400 28,437,000 0.40% Put
28 E M C CORP MASS 1,063,100 28,332,000 0.40% Put
29 Mobileye NV 742,100 27,673,000 0.39% Put
30 KINDER MORGAN INC DEL 1,525,400 27,244,000 0.38% Call
31 PFIZER INC 837,300 24,818,000 0.35% Put
32 CONSOL ENERGY INC 2,169,800 24,497,000 0.35% Call
33 Charter Communications, Inc. 121,000 24,494,000 0.35% Put
34 TRANSOCEAN LTD 2,655,500 24,271,000 0.34% Put
35 QIHOO 360 TECHNOLOGY CO LTD CALL 319,900 24,168,000 0.34% Call
36 TEVA PHARMACEUTICAL INDS LTD 444,500 23,785,000 0.34% Put
37 BANK AMER CORP 1,734,300 23,448,000 0.33% Put
38 CHESAPEAKE ENERGY CORP CALL 5,523,100 22,755,000 0.32% Call
39 FREEPORT-MCMORAN INC 2,199,655 22,744,000 0.32%
40 MYLAN N V 484,600 22,461,000 0.32% Put
41 BARCLAYS BK PLC 1,272,100 22,402,000 0.32% Put
42 PFIZER INC 748,500 22,186,000 0.31% Call
43 UNITED STATES OIL FUND LP 2,265,100 21,971,000 0.31% Call
44 ALCOA INC 2,292,500 21,962,000 0.31% Put
45 LOWES COS INC 286,300 21,687,000 0.31% Call
46 QIHOO 360 TECHNOLOGY CO LTD 278,414 21,034,000 0.30%
47 DISNEY WALT CO 205,800 20,438,000 0.29% Put
48 BARRICK GOLD CORP 1,502,264 20,401,000 0.29%
49 BAKER HUGHES INC 455,900 19,982,000 0.28% Put
50 CIGNA CORPORATION 145,000 19,900,000 0.28% Put
Page 1 of 91

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0000932540-16-000021, filed 2016.05.12).

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.