GROUP ONE TRADING, L.P. Information

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

Report Date: 12/31/2014

Position Statistics

Total Positions 1,906
New Positions 416
Increased Positions 837
Decreased Positions 1,008
Positions with Activity 1,845
Sold Out Positions 471
Total Mkt Value (in $ millions) 1,028

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

Sector Weighting

Basic Materials 4.66%
Capital Goods 2.11%
Conglomerates 0.99%
Consumer Cyclical 2.17%
Consumer/Non-Cyclical 1.73%
Energy 8.32%
Financial 8.29%
Healthcare 19.64%
Services 16.24%
Technology 14.76%
Transportation 2.51%
Utilities 1.96%

1,906 Positions as of 12/31/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
EMPIRE ST RLTY TR INC CL A -2 Sold Out 0
ENANTA PHARMACEUTICALS INC COM -6 Sold Out 0
ENBRIDGE ENERGY PARTNERS L P COM -6 Sold Out 0
ENDOLOGIX INC COM -89 Sold Out 0
ENERGY RECOVERY INC COM -3 Sold Out 0
ENERGY XXI LTD USD UNRS SHS -570 Sold Out 0
ENTERCOM COMMUNICATIONS CORP CL A -2 Sold Out 0
ENTEROMEDICS INC COM NEW -25 Sold Out 0
ENTERPRISE PRODS PARTNERS L P COM -7 Sold Out 0
ENTRAVISION COMMUNICATIONS CP CL A -58 Sold Out 0
ENVIVIO INC COM -6 Sold Out 0
EOG RES INC COM -18 Sold Out 0
EPIRUS BIOPHARMACEUTICALS INC COM -3 Sold Out 0
EPIZYME INC COM -1 Sold Out 0
ESSENT GROUP LTD COM Sold Out 0
EVERSOURCE ENERGY COM -199 Sold Out 0
EVINE LIVE INC CL A -27 Sold Out 0
EXACT SCIENCES CORP COM -1,481 Sold Out 0
EXONE CO COM -276 Sold Out 0
EXPEDITORS INTL WASH INC COM -102 Sold Out 0


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