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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)
Original 13F HR (0000932540-16-000023) filed in 2016.08.12
#
Name
Shares
Value ($)
%
Options
Notes
4501 WINDTREE THERAPEUTICS INC 26,000 50 0.00% Call
4502 WINDTREE THERAPEUTICS INC 5,486 11 0.00%
4503 WINGSTOP INC 20,300 553 0.01% Call
4504 WISDOMTREE INC COM 20,508 201 0.00%
4505 WISDOMTREE INVTS INC 67,400 660 0.01% Put
4506 WISDOMTREE INVTS INC 37,600 368 0.00% Call
4507 WIX COM LTD 4,000 121 0.00% Call
4508 WIX COM LTD 9,000 273 0.00% Put
4509 WIX COM LTD 3,436 104 0.00%
4510 WOLVERINE WORLD WIDE INC 3,400 69 0.00% Call
4511 WORKDAY INC 4,000 299 0.00% Call
4512 WORKDAY INC 7,275 543 0.01%
4513 WORLD ACCEP CORP DEL 700 32 0.00% Put
4514 WORLD ACCEP CORPORATION COM 18 1 0.00%
4515 WORLD WRESTLING ENTMT INC 18,400 339 0.00% Call
4516 WORLD WRESTLING ENTMT INC 26,100 481 0.01% Put
4517 WP GLIMCHER IN 2,656 30 0.00%
4518 WP GLIMCHER INC 300 3 0.00% Call
4519 WPX ENERGY INC 198,320 1,846 0.02%
4520 WPX ENERGY INC 48,200 449 0.01% Call
4521 WPX ENERGY INC 242,800 2,260 0.03% Put
4522 WR GRACE & CO 12,601 923 0.01%
4523 WRIGHT MED GROUP N V 25,100 436 0.01% Put
4524 WRIGHT MED GROUP N V 120,000 2,084 0.02% Call
4525 WYNDHAM WORLDWIDE CORP 30,000 2,137 0.03% Put
4526 WYNDHAM WORLDWIDE CORP 2,900 207 0.00% Call
4527 WYNN RESORTS LTD 22,400 2,030 0.02% Put
4528 WYNN RESORTS LTD 25,400 2,302 0.03% Call
4529 WYNN RESORTS LTD 5,868 532 0.01%
4530 Welbilt Inc 6,478 114 0.00%
4531 World Wrestling Entertainment Inc 329 6 0.00%
4532 XENCOR INC 1,900 36 0.00% Call
4533 XENOPORT INC 53,400 376 0.00% Call
4534 XENOPORT INC 8,600 61 0.00% Put
4535 XEROX CORP 191,400 1,816 0.02% Call
4536 XEROX CORP 9,600 91 0.00% Put
4537 XILINX INC 43,400 2,002 0.02% Call
4538 XILINX INC 13,300 614 0.01% Put
4539 XINYUAN REAL ESTATE CO LTD 33,700 165 0.00% Call
4540 XINYUAN REAL ESTATE CO LTD 200 1 0.00% Put
4541 XINYUAN REAL ESTATE CO LTD SPONS ADR 6,309 31 0.00%
4542 XL GROUP PLC 126 4 0.00%
4543 XL GROUP PLC 4,700 157 0.00% Call
4544 XL GROUP PLC 600 20 0.00% Put
4545 XOMA CORP DEL 53,913 30 0.00%
4546 XOMA CORP DEL 77,500 43 0.00% Call
4547 XOMA CORP DEL 109,900 61 0.00% Put
4548 XPO LOGISTICS INC 38,300 1,006 0.01% Call
4549 XPO LOGISTICS INC 24,556 645 0.01%
4550 XPO LOGISTICS INC 90,700 2,382 0.03% Put
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