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%

1,811 Positions as of 03/31/2015

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
LOCAL CORP COM Sold Out 0
LORAL SPACE & COMMUNICATNS INC COM -150 Sold Out 0
LYONDELLBASELL INDUSTRIES N V SHS - A - -18 Sold Out 0
M D C HLDGS INC COM -121 Sold Out 0
M/I HOMES INC COM -2 Sold Out 0
MACQUARIE INFRASTRUCTURE CORP COM -298 Sold Out 0
MAG SILVER CORP COM -36 Sold Out 0
MAIN STREET CAPITAL CORP COM -102 Sold Out 0
MAKEMYTRIP LIMITED MAURITIUS SHS Sold Out 0
MANITOWOC INC COM -3,171 Sold Out 0
MANNING & NAPIER INC CL A -10 Sold Out 0
MARTHA STEWART LIVING OMNIMED CL A -36 Sold Out 0
MASCO CORP COM -2,657 Sold Out 0
MASONITE INTL CORP NEW COM -105 Sold Out 0
MATRIX SVC CO COM -96 Sold Out 0
MBIA INC COM -4,818 Sold Out 0
MCCLATCHY CO CL A Sold Out 0
MCDERMOTT INTL INC COM -810 Sold Out 0
MECHEL OAO SPONSORED ADR -287 Sold Out 0
MEDIA GEN INC NEW COM -778 Sold Out 0