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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
4451 ENDO INTL PLC 465,100 13,093,000 0.18% Put
4452 ENTERPRISE PRODS PARTNERS L 536,000 13,196,000 0.19% Put
4453 Call DAL $41.0 Exp Jun 16, 2017 274,800 13,377,000 0.19% Call
4454 MICROSOFT CORP 243,400 13,443,000 0.19% Put
4455 ENERGY TRANSFER EQUITY L P 1,895,400 13,514,000 0.19% Call
4456 VALE S A 3,249,600 13,681,000 0.19% Put
4457 BLACKBERRY LTD 1,696,977 13,729,000 0.19%
4458 PIONEER NAT RES CO 97,700 13,750,000 0.19% Put
4459 KINDER MORGAN INC DEL 777,800 13,892,000 0.20% Put
4460 WELLS FARGO CO NEW 288,100 13,933,000 0.20% Call
4461 GILEAD SCIENCES INC 152,100 13,972,000 0.20% Put
4462 OFFICE DEPOT INC 1,978,800 14,049,000 0.20% Call
4463 ENTERPRISE PRODS PARTNERS L 573,700 14,124,000 0.20% Call
4464 ROYAL GOLD INC 278,200 14,269,000 0.20% Call
4465 TEVA PHARMACEUTICAL INDS LTD 266,900 14,282,000 0.20% Call
4466 UNITED STATES OIL FUND LP 1,484,800 14,403,000 0.20% Put
4467 DEVON ENERGY CORP NEW 525,600 14,422,000 0.20% Put
4468 YPF SOCIEDAD ANONIMA 812,400 14,526,000 0.21% Put
4469 21VIANET GROUP INC 731,500 14,608,000 0.21% Call
4470 FRANKLIN RES INC 374,300 14,616,000 0.21% Put
4471 OPKO HEALTH INC 1,409,100 14,641,000 0.21% Put
4472 TEVA PHARMACEUTICAL INDS LTD 278,431 14,899,000 0.21%
4473 ACADIA PHARMACEUTICALS INC 533,700 14,922,000 0.21% Call
4474 ADVANCED MICRO DEVICES INC 5,245,100 14,949,000 0.21% Put
4475 OPKO HEALTH INC 1,459,100 15,160,000 0.21% Call
4476 TEREX CORP NEW 609,700 15,169,000 0.21% Call
4477 SPDR GOLD TRUST 133,400 15,688,000 0.22% Put
4478 SOLARCITY CORP 643,000 15,805,000 0.22% Call
4479 CAMPBELL SOUP CO 250,100 15,954,000 0.23% Put
4480 Call GILD $70.0 Exp Jun 16, 2017 177,800 16,333,000 0.23% Call
4481 CANADIAN NAT RES LTD PUT 606,500 16,376,000 0.23% Put
4482 TIME WARNER INC 227,200 16,483,000 0.23% Call
4483 TYSON FOODS INC 253,300 16,885,000 0.24% Call
4484 JD COM INC 647,200 17,151,000 0.24% Put
4485 BLACKBERRY LTD 2,159,300 17,469,000 0.25% Put
4486 VERIZON COMMUNICATIONS INC 327,000 17,684,000 0.25% Call
4487 UNITED STATES STL CORP NEW 1,114,600 17,889,000 0.25% Call
4488 TRANSOCEAN LTD 1,962,500 17,937,000 0.25% Call
4489 DISNEY WALT CO 180,800 17,955,000 0.25% Call
4490 BANK AMERICA CORP 1,332,694 18,018,000 0.25%
4491 BARRICK GOLD CORP 1,343,300 18,242,000 0.26% Call
4492 MOBILEYE N V AMSTELVEEN 491,515 18,329,000 0.26%
4493 TWITTER INC 1,110,000 18,371,000 0.26% Call
4494 TWITTER INC 1,112,000 18,404,000 0.26% Put
4495 ALIBABA GROUP HLDG LTD 236,700 18,706,000 0.26% Call
4496 PENNEY J C INC 1,722,400 19,050,000 0.27% Put
4497 SOLARCITY CORP 786,100 19,322,000 0.27% Put
4498 PEABODY ENERGY CORP 8,445,600 19,594,000 0.28% Call
4499 CIGNA CORPORATION 145,000 19,900,000 0.28% Put
4500 BAKER HUGHES INC 455,900 19,982,000 0.28% Put
Page 90 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.