GROUP ONE TRADING, L.P. Information

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

Report Date: 03/31/2014

Position Statistics

Total Positions 1,920
New Positions 468
Increased Positions 924
Decreased Positions 970
Positions with Activity 1,894
Sold Out Positions 493
Total Mkt Value (in $ millions) 987

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

Sector Weighting

Basic Materials 4.77%
Capital Goods 1.29%
Conglomerates 0.55%
Consumer Cyclical 2.41%
Consumer/Non-Cyclical 1.67%
Energy 13.79%
Financial 6.67%
Healthcare 13.23%
Services 21.13%
Technology 20.04%
Transportation 3.48%
Utilities 4.66%

1,920 Positions as of 03/31/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
LAMAR ADVERTISING CO CL A -837 Sold Out 0
LATTICE SEMICONDUCTOR CORP COM -6 Sold Out 0
LEAPFROG ENTERPRISES INC CL A -918 Sold Out 0
LEE ENTERPRISES INC COM -79 Sold Out 0
LEGG MASON INC COM -150 Sold Out 0
LEGGETT & PLATT INC COM -334 Sold Out 0
LEIDOS HLDGS INC COM -972 Sold Out 0
LEXINGTON REALTY TRUST COM -67 Sold Out 0
LIBERATOR MEDICAL HLDGS INC COM -8 Sold Out 0
LIBERTY GLOBAL PLC SHS CL C -11,055 Sold Out 0
LILLY ELI & CO COM -108 Sold Out 0
LINCOLN NATL CORP IND COM -11 Sold Out 0
LMI AEROSPACE INC COM -10 Sold Out 0
LUMOS NETWORKS CORP COM -2 Sold Out 0
MACYS INC COM -6 Sold Out 0
MAGICJACK VOCALTEC LTD SHS -3,063 Sold Out 0
MANITOWOC INC COM -1,299 Sold Out 0
MARIN SOFTWARE INC COM -45 Sold Out 0
MARINE PRODS CORP COM -6 Sold Out 0
MARKETAXESS HLDGS INC COM -39 Sold Out 0


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