GROUP ONE TRADING, L.P. Information

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

Report Date: 12/31/2014

Position Statistics

Total Positions 1,902
New Positions 415
Increased Positions 836
Decreased Positions 1,006
Positions with Activity 1,842
Sold Out Positions 471
Total Mkt Value (in $ millions) 1,020

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

Sector Weighting

Basic Materials 4.2%
Capital Goods 2.09%
Conglomerates 0.98%
Consumer Cyclical 2.1%
Consumer/Non-Cyclical 1.77%
Energy 8.04%
Financial 8.19%
Healthcare 20.13%
Services 16.17%
Technology 14.25%
Transportation 2.51%
Utilities 1.92%

1,902 Positions as of 12/31/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
WHITEWAVE FOODS CO COM 3,435 -2,200 (39.04) 75,955
BANCO SANTANDER SA ADR 3,394 3,163 1,374.81 454,285
NEWFIELD EXPL CO COM 3,393 -3,240 (48.85) 98,993
KINROSS GOLD CORP COM NO PAR 3,388 -1,150 (25.34) 1,435,660
BLACKSTONE GROUP L P COM UNIT LTD 3,179 -1,333 (29.54) 83,649
MARKWEST ENERGY PARTNERS L P UNIT LTD PARTN 3,161 3,161 New 50,154
VALE S A ADR 3,108 -159 (4.86) 548,163
YANDEX N V SHS CLASS A 3,108 1,063 51.98 201,161
UNITED STATES OIL FUND LP UNITS 3,107 3,107 New 181,290
GREEN PLAINS INC COM 3,060 1,224 66.69 114,011
EBIX INC COM NEW 3,015 -362 (10.73) 99,982
YAMANA GOLD INC COM 3,010 -259 (7.91) 785,778
NEWLINK GENETICS CORP COM 2,987 1,323 79.43 57,166
LIBERTY GLOBAL PLC SHS CL A 2,941 649 28.34 57,086
E-COMMERCE CHINA DANGDANG INC SPN ADS COM A 2,883 -532 (15.57) 356,763
AEGERION PHARMACEUTICALS INC COM 2,854 199 7.51 109,615
JETBLUE AIRWAYS CORP COM 2,829 2,406 568.93 146,724
YELP INC CL A 2,798 1,339 91.82 59,331
ARUBA NETWORKS INC COM 2,785 -1,851 (39.93) 113,706
RETAILMENOT INC COM SER 1 2,726 -353 (11.48) 151,105