GROUP ONE TRADING LLC Q1 2018 Filing

Filed May 11, 2018

Portfolio Value

$10.5B

Holdings

4,806

Report Date

Q1 2018

Filing Type

13F-HR

All Holdings (4,806 positions)

#StockSharesValue% PortfolioType
901
FATEFATE THERAPEUTICS INC
32,500$317.0M3.01%Call
902
MITEK SYS INC
42,900$317.0M3.01%Call
903
FCFRANKLIN COVEY CO
11,800$317.0M3.01%Call
904
ADNTADIENT PLC
5,300$317.0M3.01%Call
905
NEOS THERAPEUTICS INC
38,121$316.0M3.00%
906
QUIDEL CORP
6,100$316.0M3.00%Call
907
CITRIX SYS INC
3,400$316.0M3.00%Call
908
ZYNERBA PHARMACEUTICALS INC
36,335$316.0M3.00%
909
COLLCOLLEGIUM PHARMACEUTICAL INC
12,373$316.0M3.00%
910
GUESS INC
15,200$315.0M2.99%Call
911
KEANE GROUP INC
21,200$314.0M2.98%Call
912
NORTHSTAR REALTY EUROPE CORP
24,084$314.0M2.98%
913
PACIFIC PREMIER BANCORP
7,800$314.0M2.98%Call
914
WYNEURWYNDHAM WORLDWIDE CORP
2,732$313.0M2.97%
915
NOVAGOLD RES INC
72,200$313.0M2.97%Put
916
DEAN FOODS CO NEW
36,273$313.0M2.97%
917
CRBPCORBUS PHARMACEUTICALS HLDGS
51,300$313.0M2.97%Put
918
MSBMESABI TR
12,172$313.0M2.97%
919
ADTRAN INC
20,000$311.0M2.95%Put
920
WLKWESTLAKE CHEM CORP
2,800$311.0M2.95%Put
921
SIX FLAGS ENTMT CORP NEW
5,000$311.0M2.95%Call
922
ENBRIDGE ENERGY PARTNERS L P
32,200$310.0M2.94%Put
923
QIAGEN NV
9,600$310.0M2.94%Call
924
PANWPALO ALTO NETWORKS INC
1,700$309.0M2.93%Put
925
FTITECHNIPFMC PLC
10,500$309.0M2.93%Call
926
ALMOST FAMILY INC
5,500$308.0M2.92%Put
927
OBSIDIAN ENERGY LTD
314,600$308.0M2.92%Put
928
INTERCONTINENTAL HOTELS GROU
5,000$306.0M2.90%Call
929
SONYSONY CORP
6,300$305.0M2.90%Put
930
TPRTAPESTRY INC
5,800$305.0M2.90%Put
931
SYMANTEC CORP
11,800$305.0M2.90%Call
932
CALUMET SPECIALTY PRODS PTNR
43,300$305.0M2.90%Call
933
FFIVF5 NETWORKS INC
2,110$305.0M2.90%
934
BRBROADRIDGE FINL SOLUTIONS IN
2,774$304.0M2.89%
935
MGAMAGNA INTL INC
5,400$304.0M2.89%Call
936
GTNGRAY TELEVISION INC
23,943$304.0M2.89%
937
CHGGCHEGG INC
14,700$304.0M2.89%Call
938
CPFL ENERGIA S A
20,200$303.0M2.88%Call
939
2U INC
3,608$303.0M2.88%
940
STRAYER ED INC
3,000$303.0M2.88%Call
941
TATA MTRS LTD
11,800$303.0M2.88%Call
942
CARLYLE GROUP L P
14,200$303.0M2.88%Put
943
CPRTCOPART INC
5,942$303.0M2.88%
944
FIZZNATIONAL BEVERAGE CORP
3,400$303.0M2.88%Put
945
U S CONCRETE INC
5,000$302.0M2.87%Call
946
NEWLINK GENETICS CORP
41,700$302.0M2.87%Put
947
DIAMOND OFFSHORE DRILLING IN
20,600$302.0M2.87%Call
948
KERYX BIOPHARMACEUTICALS INC
73,800$302.0M2.87%Put
949
ORCHID IS CAP INC
40,800$301.0M2.86%Put
950
FORTUNA SILVER MINES INC
57,700$301.0M2.86%Call
951
SHLXUSDSHELL MIDSTREAM PARTNERS L P
14,306$301.0M2.86%
952
THOMSON REUTERS CORP
7,800$301.0M2.86%Call
953
GAIN CAP HLDGS INC
44,600$301.0M2.86%Call
954
PETROCHINA CO LTD
4,300$300.0M2.85%Put
955
S9QSPIRIT AEROSYSTEMS HLDGS INC
3,585$300.0M2.85%
956
MDBMONGODB INC
6,900$299.0M2.84%Put
957
SSTKSHUTTERSTOCK INC
6,200$299.0M2.84%Call
958
MYOKARDIA INC
6,100$298.0M2.83%Put
959
TWNKEURHOSTESS BRANDS INC
20,116$298.0M2.83%
960
PLATFORM SPECIALTY PRODS COR
30,994$298.0M2.83%
961
NAVIOS MARITIME PARTNERS L P
165,300$298.0M2.83%Put
962
MIRATI THERAPEUTICS INC
9,700$298.0M2.83%Put
963
ACICUNITED INS HLDGS CORP
15,576$298.0M2.83%
964
FTAIEURFORTRESS TRANS INFRST INVS L
18,604$297.0M2.82%
965
BCBRUNSWICK CORP
5,000$297.0M2.82%Put
966
LAYNE CHRISTENSEN CO
19,916$297.0M2.82%
967
NOBLE ENERGY INC
9,800$297.0M2.82%Put
968
BNSBANK N S HALIFAX
4,800$296.0M2.81%Call
969
FUODOLBY LABORATORIES INC
4,662$296.0M2.81%
970
XPO LOGISTICS INC
2,900$295.0M2.80%Put
971
CHRSCOHERUS BIOSCIENCES INC
26,700$295.0M2.80%Call
972
QUOTIENT TECHNOLOGY INC
22,500$295.0M2.80%Call
973
SLMSLM CORP
26,300$295.0M2.80%Call
974
GLOBAL CORD BLOOD CORPORATIO
28,925$295.0M2.80%
975
CABOT MICROELECTRONICS CORP
2,743$294.0M2.79%
976
GDSGDS HLDGS LTD
10,700$294.0M2.79%Put
977
VICRVICOR CORP
10,300$294.0M2.79%Put
978
QUALITY CARE PPTYS INC
15,100$293.0M2.78%Put
979
COLONY NORTHSTAR INC
52,100$293.0M2.78%Put
980
HECLA MNG CO
79,700$293.0M2.78%Put
981
MVOMV OIL TR
37,274$293.0M2.78%
982
GTNGRAY TELEVISION INC
23,000$292.0M2.77%Put
983
CHINA LIFE INS CO LTD
20,900$292.0M2.77%Put
984
ENPHENPHASE ENERGY INC
64,000$292.0M2.77%
985
AMAG PHARMACEUTICALS INC
14,500$292.0M2.77%Call
986
ENPHENPHASE ENERGY INC
64,000$292.0M2.77%Call
987
IQVIQVIA HLDGS INC
2,967$291.0M2.76%
988
PACBPACIFIC BIOSCIENCES CALIF IN
141,000$289.0M2.74%Put
989
CVNACARVANA CO
12,600$289.0M2.74%Call
990
PINNACLE ENTMT INC NEW
9,600$289.0M2.74%Put
991
BP PRUDHOE BAY RTY TR
12,100$289.0M2.74%Call
992
FLEXION THERAPEUTICS INC
12,900$289.0M2.74%Call
993
HRLHORMEL FOODS CORP
8,415$289.0M2.74%
994
RACEFERRARI N V
2,400$289.0M2.74%Put
995
PPLPPL CORP
10,233$289.0M2.74%
996
FLEXION THERAPEUTICS INC
12,900$289.0M2.74%Put
997
NVMINOVA MEASURING INSTRUMENTS L
10,600$288.0M2.73%Put
998
VICRVICOR CORP
10,071$288.0M2.73%
999
SIRIUS XM HLDGS INC
46,200$288.0M2.73%Put
1000
SIENUSDSIENTRA INC
29,817$288.0M2.73%
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