GROUP ONE TRADING, L.P. Information

440 S. LASALLE STREET, CHICAGO, Illinois, 60605, (312) 347-8864

Report Date: 03/31/2015

Position Statistics

Total Positions 1,811
New Positions 392
Increased Positions 762
Decreased Positions 1,006
Positions with Activity 1,768
Sold Out Positions 513
Total Mkt Value (in $ millions) 817

Institutional Holdings information is filed by major institutions on form 13-F with the Securities and Exchange Commission.

Sector Weighting

Basic Materials 3.69%
Capital Goods 1.71%
Conglomerates 0.77%
Consumer Cyclical 2%
Consumer/Non-Cyclical 2.4%
Energy 8.87%
Financial 8.83%
Healthcare 25.74%
Services 14.67%
Technology 11.75%
Transportation 2.53%
Utilities 2.96%

762 INCREASED Positions as of 03/31/2015

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
ABBVIE INC COM 27,584 17,270 167.44 393,155
MOBILEYE N V AMSTELVEEN ORD SHS 15,608 15,608 New 259,838
RAPTOR PHARMACEUTICAL CORP COM 14,891 4,681 45.85 1,053,829
INTEROIL CORP COM 10,777 3,433 46.75 248,088
GILEAD SCIENCES INC COM 10,216 1,441 16.42 86,646
TARGA RES CORP COM 9,752 5,919 154.45 108,751
FIDELITY NATIONAL FINANCIAL IN FNF GROUP COM 9,266 9,266 New 236,559
BANCO SANTANDER SA ADR 8,841 5,761 187.04 1,303,996
OCWEN FINL CORP COM NEW 8,292 5,570 204.60 705,107
INFINERA CORPORATION COM 8,270 2,809 51.45 351,607
GOLAR LNG LTD BERMUDA SHS 7,974 2,320 41.02 183,444
CELLDEX THERAPEUTICS INC NEW COM 7,823 3,439 78.46 332,609
TIME WARNER CABLE INC COM 7,798 4,690 150.90 40,859
JD COM INC SPON ADR CL A 7,247 6,435 792.23 217,169
BIOMARIN PHARMACEUTICAL INC COM 6,971 6,971 New 48,219
SEADRILL LIMITED SHS 6,349 4,877 331.32 679,739
ISIS PHARMACEUTICALS INC COM 6,051 1,844 43.83 113,807
SONY CORP ADR NEW 5,753 4,371 316.23 197,559
ADVANCED MICRO DEVICES INC COM 5,644 1,950 52.78 2,924,459
RIO TINTO PLC SPONSORED ADR 5,359 5,359 New 140,301