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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)
Original 13F HR (0000932540-16-000021) filed in 2016.05.12
#
Name
Shares
Value ($)
%
Options
Notes
1 STRATA SKIN SCIENCES INC 1 0 0.00%
2 PROSHARES TR 1 0 0.00%
3 SMART TECHNOLOGIES INC 1 0 0.00%
4 ASSEMBLY BIOSCIENCES INC 1 0 0.00%
5 INFINITY PHARMACEUTICALS INC 3 0 0.00%
6 LA JOLLA PHARMACEUTICAL CO 5 0 0.00%
7 NORTH EUROPEAN OIL RTY TR SH BEN INT 10 0 0.00%
8 CERAGON NETWORKS LTD 11 0 0.00%
9 Rubicon Technology 18 0 0.00%
10 PARAMOUNT GOLD NEV CORP 19 0 0.00%
11 HACKETT GROUP INC 19 0 0.00%
12 RESOURCE CAPITAL CORP N/C 5/29/18 30068N105 20 0 0.00%
13 Ball Corporation 31 2 0.00%
14 CECO ENVIRONMENTAL CORP 40 0 0.00%
15 INFOBLOX INC 42 1 0.00%
16 AUTODESK INC 44 3 0.00%
17 BANCO MACRO SA 49 3 0.00%
18 GREAT PANTHER SILVER LTD 59 0 0.00%
19 VERASTEM INC 66 0 0.00%
20 STERLING CONSTRUCTION CO INC 67 0 0.00%
21 CORELOGIC INC 67 2 0.00%
22 CLEVELAND BIOLABS INC 68 0 0.00%
23 G-III APPAREL GROUP LTD 70 3 0.00%
24 Aerohive Networks, Inc. 75 0 0.00%
25 VANGUARD INDEX FDS 75 14 0.00%
26 NANOSPHERE INC 76 0 0.00%
27 MOMENTA PHARMACEUTICALS INC 78 1 0.00%
28 CALAMOS ASSET MANAGEMENT CL A ORD 86 1 0.00%
29 ASHFORD HOSPITALITY TR INC COM SHS 88 1 0.00%
30 PRUDENTIAL FINL INC 90 7 0.00%
31 CHINA PETROLEUM & CHEMICAL COR ADR SPONSORED 91 6 0.00%
32 REVOLUTION LIGHTING TECHNOLOGI COM NEW 96 1 0.00%
33 FOUR CORNERS PPTY TR INC COM 99 2 0.00%
34 CORELOGIC INC 100 3 0.00% Call
35 K12 INC 100 1 0.00%
36 SASOL LTD 100 3 0.00%
37 KAPSTONE PAPER & PACKAGING C 100 1 0.00% Call
38 TRINITY BIOTECH PLC 100 1 0.00% Call
39 TRINITY BIOTECH PLC 100 1 0.00%
40 ATARA BIOTHERAPEUTICS INC 100 2 0.00% Put
41 BANCORPSOUTH INC 100 2 0.00% Call
42 OMEGA PROTEIN CORP 100 2 0.00% Put
43 SCHULMAN A INC 100 3 0.00%
44 BLACKHAWK NETWORK HLDGS INC 100 3 0.00% Call
45 KENNAMETAL INC 100 2 0.00% Call
46 REALNETWORKS INC 100 0 0.00% Call
47 FLEETMATICS GROUP PLC 100 4 0.00% Call
48 ARROW ELECTRS INC 100 6 0.00% Put
49 Arrow Electronics Inc 100 6 0.00%
50 NEXTERA ENERGY PARTNERS LP 100 3 0.00% Put
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