GROUP ONE TRADING, L.P. Information

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

Report Date: 09/30/2014

Position Statistics

Total Positions 1,899
New Positions 435
Increased Positions 936
Decreased Positions 882
Positions with Activity 1,818
Sold Out Positions 392
Total Mkt Value (in $ millions) 1,208

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

Sector Weighting

Basic Materials 3.55%
Capital Goods 1.75%
Conglomerates 0.83%
Consumer Cyclical 2.94%
Consumer/Non-Cyclical 2.03%
Energy 11.22%
Financial 7.22%
Healthcare 17.6%
Services 16.24%
Technology 16.15%
Transportation 2.51%
Utilities 3.65%

1,899 Positions as of 09/30/2014

Company Class Value of Shares ($1,000s) ▲ Change in Value ($1,000s) Change (%) Shares Held
MCGRAW HILL FINL INC COM -205 Sold Out 0
ACCESS MIDSTREAM PARTNERS L P UNIT -538 Sold Out 0
ACCRETIVE HEALTH INC COM -16 Sold Out 0
ACCURAY INC COM -286 Sold Out 0
ACI WORLDWIDE INC COM -26 Sold Out 0
ACTUATE CORP COM -3 Sold Out 0
ADTRAN INC COM -14 Sold Out 0
ADVANCE AUTO PARTS INC COM -35 Sold Out 0
AGILYSYS INC COM -13 Sold Out 0
AIRGAS INC COM -195 Sold Out 0
ALIGN TECHNOLOGY INC COM -4 Sold Out 0
ALLERGAN INC COM -4,840 Sold Out 0
ALLIANCE RES PARTNER L P UT LTD PART -2 Sold Out 0
ALLIANT ENERGY CORP COM -99 Sold Out 0
ALLIED NEVADA GOLD CORP COM -437 Sold Out 0
ALMOST FAMILY INC COM -120 Sold Out 0
ALPHA NATURAL RESOURCES INC COM -218 Sold Out 0
ALPHATEC HOLDINGS INC COM -2 Sold Out 0
ALTISOURCE RESIDENTIAL CORP CL B -261 Sold Out 0
ALUMINUM CORP CHINA LTD SPON ADR H SHS -14 Sold Out 0