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 1,900
New Positions 435
Increased Positions 936
Decreased Positions 883
Positions with Activity 1,819
Sold Out Positions 392
Total Mkt Value (in $ millions) 1,199

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

Sector Weighting

Basic Materials 3.6%
Capital Goods 1.75%
Conglomerates 0.84%
Consumer Cyclical 2.93%
Consumer/Non-Cyclical 2.05%
Energy 11.47%
Financial 7.24%
Healthcare 17.44%
Services 16.16%
Technology 16.01%
Transportation 2.51%
Utilities 3.64%

1,900 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 -204 Sold Out 0
ACCESS MIDSTREAM PARTNERS L P UNIT -546 Sold Out 0
ACCRETIVE HEALTH INC COM -16 Sold Out 0
ACCURAY INC COM -285 Sold Out 0
ACI WORLDWIDE INC COM -26 Sold Out 0
ACTUATE CORP COM -3 Sold Out 0
ADTRAN INC COM -13 Sold Out 0
ADVANCE AUTO PARTS INC COM -35 Sold Out 0
AGILYSYS INC COM -12 Sold Out 0
AIRGAS INC COM -195 Sold Out 0
ALIGN TECHNOLOGY INC COM -4 Sold Out 0
ALLERGAN INC COM -4,778 Sold Out 0
ALLIANCE RES PARTNER L P UT LTD PART -2 Sold Out 0
ALLIANT ENERGY CORP COM -100 Sold Out 0
ALLIED NEVADA GOLD CORP COM -434 Sold Out 0
ALMOST FAMILY INC COM -117 Sold Out 0
ALPHA NATURAL RESOURCES INC COM -227 Sold Out 0
ALPHATEC HOLDINGS INC COM -2 Sold Out 0
ALTISOURCE RESIDENTIAL CORP CL B -254 Sold Out 0
ALUMINUM CORP CHINA LTD SPON ADR H SHS -14 Sold Out 0