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 1,820
New Positions 393
Increased Positions 767
Decreased Positions 1,009
Positions with Activity 1,776
Sold Out Positions 516
Total Mkt Value (in $ millions) 880

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

Sector Weighting

Basic Materials 4.88%
Capital Goods 1.91%
Conglomerates 0.81%
Consumer Cyclical 2.01%
Consumer/Non-Cyclical 2.27%
Energy 10.54%
Financial 8.61%
Healthcare 22.39%
Services 14.28%
Technology 12.85%
Transportation 2.55%
Utilities 3.1%

1,820 Positions as of 03/31/2015

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
NOODLES & CO CL A -131 Sold Out 0
NORDIC AMERICAN TANKERS LIMITE COM -442 Sold Out 0
NORTHSTAR RLTY FIN CORP COM NEW -2,362 Sold Out 0
NOVATEL WIRELESS INC COM NEW -100 Sold Out 0
NRG ENERGY INC COM NEW -247 Sold Out 0
NUSTAR ENERGY LP UNIT COM -2,175 Sold Out 0
NUSTAR GP HOLDINGS LLC UNIT RESTG LLC -325 Sold Out 0
NUVASIVE INC COM -43 Sold Out 0
NUVERRA ENVIRONMENTAL SOLUTION COM NEW -278 Sold Out 0
NVIDIA CORP COM -2 Sold Out 0
ODYSSEY MARINE EXPLORATION INC COM -1 Sold Out 0
OGE ENERGY CORP COM -28 Sold Out 0
OIL STS INTL INC COM -108 Sold Out 0
OLD REP INTL CORP COM -164 Sold Out 0
OMEGA PROTEIN CORP COM -25 Sold Out 0
ONCOGENEX PHARMACEUTICALS INC COM -31 Sold Out 0
ONE GAS INC COM -47 Sold Out 0
ORBITAL ATK INC COM -134 Sold Out 0
ORBITZ WORLDWIDE INC COM -810 Sold Out 0
ORIGIN AGRITECH LIMITED SHS -45 Sold Out 0