Dark
Light
System
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
4601 ZIOPHARM ONCOLOGY INC 515,800 2,832 0.03% Call
4602 ZIOPHARM ONCOLOGY INC 598,400 3,285 0.04% Put
4603 ZIOPHARM ONCOLOGY INC 499,776 2,744 0.03%
4604 ZOES KITCHEN INC 200 7 0.00% Put
4605 ZOES KITCHEN INC 52,000 1,886 0.02% Call
4606 ZOETIS INC 49,400 2,345 0.03% Call
4607 ZOETIS INC 8,286 393 0.00%
4608 ZOETIS INC 47,800 2,269 0.03% Put
4609 ZOGENIX INC 5,100 41 0.00% Put
4610 ZOGENIX INC 71,600 576 0.01% Call
4611 ZOGENIX INC 32,446 261 0.00%
4612 ZUMIEZ INC 100 1 0.00%
4613 ZUMIEZ INC 100 1 0.00% Put
4614 ZYNGA INC 42,117 105 0.00%
4615 ZYNGA INC 869,200 2,164 0.03% Call
4616 ZYNGA INC 321,000 799 0.01% Put
Page 93 of 93