GROUP ONE TRADING LLC Q1 2016 Filing

Filed May 12, 2016

Portfolio Value

$7.1B

Holdings

4,548

Report Date

Q1 2016

Filing Type

13F-HR

All Holdings (4,548 positions)

#StockSharesValue% PortfolioType
801
QUALITY SYS INC
22,200$338.0M4.77%Put
802
DIAMOND RESORTS INTL INC
13,915$338.0M4.77%
803
NOAHNOAH HLDGS LTD
13,600$338.0M4.77%Put
804
FLAMEL TECHNOLOGIES SA
30,600$338.0M4.77%Call
805
LGIHLGI HOMES INC
13,900$337.0M4.76%Put
806
ALLSTATE CORP
5,000$337.0M4.76%Put
807
JAKKS PAC INC
45,000$335.0M4.73%Call
808
ASTRAZENECA PLC
11,894$335.0M4.73%
809
APPLIED MICRO CIRCUITS CORP
51,928$335.0M4.73%
810
IDCCINTERDIGITAL INC
6,000$334.0M4.72%Put
811
RUBICON PROJ INC
18,200$333.0M4.70%Call
812
GRUBHUB INC
13,256$333.0M4.70%
813
NORTHERN TIER ENERGY LP
14,124$333.0M4.70%
814
RADIUS HEALTH INC
10,600$333.0M4.70%Call
815
MTGMGIC INVT CORP WIS
43,227$332.0M4.69%
816
PRETIUM RES INC
61,800$331.0M4.67%Call
817
SPIRIT AIRLS INC
6,900$331.0M4.67%Call
818
STAMPS COM INC
3,100$329.0M4.64%Put
819
GTGOODYEAR TIRE & RUBR CO
9,969$329.0M4.64%
820
AKBAAKEBIA THERAPEUTICS INC
36,400$328.0M4.63%Call
821
MAGICJACK VOCALTEC LTD
49,900$327.0M4.62%Put
822
OMFONEMAIN HLDGS INC
11,900$326.0M4.60%Call
823
HQYHEALTHEQUITY INC
13,200$326.0M4.60%Call
824
AMERICAN CAPITAL AGENCY CORP
17,422$325.0M4.59%
825
DENBURY RES INC
146,500$325.0M4.59%Put
826
ARROWHEAD RESH CORP
67,200$324.0M4.57%Call
827
FIRST DATA CORP NEW
25,000$324.0M4.57%Put
828
FIFTH STREET FINANCE CORP
64,600$324.0M4.57%Put
829
COPCONOCOPHILLIPS
8,057$324.0M4.57%
830
AMARIN CORP PLC
212,000$324.0M4.57%Put
831
JACKJACK IN THE BOX INC
5,061$323.0M4.56%
832
SEASEABRIDGE GOLD INC
29,414$322.0M4.55%
833
TYLTYLER TECHNOLOGIES INC
2,500$322.0M4.55%Call
834
OPLNKAR AUCTION SVCS INC
8,400$320.0M4.52%Call
835
LXRXLEXICON PHARMACEUTICALS INC
26,700$319.0M4.50%Call
836
AVNET INC
7,200$319.0M4.50%Call
837
TETRAPHASE PHARMACEUTICALS I
68,800$319.0M4.50%Put
838
CHINA BIOLOGIC PRODS INC
2,785$319.0M4.50%
839
TESORO CORP
3,700$318.0M4.49%Put
840
ULTRA PETROLEUM CORP
637,700$318.0M4.49%Put
841
BOB EVANS FARMS INC
6,800$317.0M4.48%Put
842
HQYHEALTHEQUITY INC
12,800$316.0M4.46%Put
843
CINCINNATI BELL INC NEW
81,686$316.0M4.46%
844
CLUBCORP HLDGS INC
22,482$316.0M4.46%
845
AXTAAXALTA COATING SYS LTD
10,800$315.0M4.45%Put
846
FIRST NIAGARA FINL GP INC
32,500$315.0M4.45%Call
847
NATUS MEDICAL INC DEL
8,200$315.0M4.45%Put
848
SWIFT TRANSN CO
16,900$315.0M4.45%Put
849
QCOMQUALCOMM INC
6,158$315.0M4.45%
850
STATOIL ASA
20,094$313.0M4.42%
851
RAPTOR PHARMACEUTICAL CORP
67,900$312.0M4.40%Call
852
GNC HLDGS INC
9,800$311.0M4.39%Put
853
IKANG HEALTHCARE GROUP INC
14,216$311.0M4.39%
854
LION BIOTECHNOLOGIES INC
61,300$311.0M4.39%Call
855
CALIFORNIA RES CORP
301,200$310.0M4.38%Call
856
ZAYO GROUP HLDGS INC
12,800$310.0M4.38%Call
857
IKANG HEALTHCARE GROUP INC
14,200$310.0M4.38%Call
858
ORGANOVO HLDGS INC
142,755$310.0M4.38%
859
CIT GROUP INC
10,000$310.0M4.38%Put
860
CURRENCYSHS JAPANESE YEN TR
3,600$310.0M4.38%Call
861
ALERE INC
6,096$309.0M4.36%
862
ARIAD PHARMACEUTICALS INC
48,395$309.0M4.36%
863
ALKSALKERMES PLC
9,000$308.0M4.35%Call
864
INTERPUBLIC GROUP COS INC
13,400$308.0M4.35%Call
865
CAESARS ENTMT CORP
45,200$307.0M4.33%Call
866
AMKOR TECHNOLOGY INC
52,100$307.0M4.33%Put
867
REGULUS THERAPEUTICS INC
44,087$306.0M4.32%
868
RJFRAYMOND JAMES FINANCIAL INC
6,400$305.0M4.31%Put
869
TRANSENTERIX INC
71,721$305.0M4.31%
870
INPHI CORP
9,100$303.0M4.28%Put
871
ARRIS INTL INC
13,200$303.0M4.28%Put
872
DBDEUTSCHE BANK AG
17,841$302.0M4.26%
873
FDO.FMACYS INC
6,822$301.0M4.25%
874
ZELTIQ AESTHETICS INC
11,100$301.0M4.25%Put
875
HBANHUNTINGTON BANCSHARES INC
31,453$300.0M4.24%
876
MOBILE TELESYSTEMS PJSC
37,000$299.0M4.22%Call
877
HORTONWORKS INC
26,500$299.0M4.22%Put
878
FLOFLOWERS FOODS INC
16,142$298.0M4.21%
879
VFCV F CORP
4,600$298.0M4.21%Put
880
PURE STORAGE INC
21,800$298.0M4.21%Call
881
CPRTCOPART INC
7,300$298.0M4.21%Call
882
CEMPRA INC
16,998$298.0M4.21%
883
CRESUD S A C I F Y A
25,600$298.0M4.21%Put
884
ST JUDE MED INC
5,400$297.0M4.19%Call
885
TIVO INC
31,200$297.0M4.19%Call
886
JAMBA INC
24,000$297.0M4.19%Put
887
EXAMWORKS GROUP INC
10,000$296.0M4.18%Put
888
COLUMBIA PIPELINE GROUP INC
11,800$296.0M4.18%Put
889
NQ MOBILE INC
64,500$295.0M4.16%Call
890
VCYTVERACYTE INC
54,623$295.0M4.16%
891
FINISAR CORP
16,200$295.0M4.16%Put
892
SCCOSOUTHERN COPPER CORP
10,600$294.0M4.15%Call
893
CALLON PETE CO DEL
33,200$294.0M4.15%Put
894
CREE INC
10,100$294.0M4.15%Put
895
ECECOPETROL S A
34,200$294.0M4.15%Put
896
INGMINGRAM MICRO INC
8,175$294.0M4.15%
897
IRDMIRIDIUM COMMUNICATIONS INC
37,400$294.0M4.15%Call
898
ZIONZIONS BANCORPORATION
12,100$293.0M4.14%Call
899
AGQPROSHARES TR
18,400$293.0M4.14%Call
900
MERITOR INC
36,200$292.0M4.12%Put
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