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 1,906
New Positions 416
Increased Positions 837
Decreased Positions 1,008
Positions with Activity 1,845
Sold Out Positions 471
Total Mkt Value (in $ millions) 1,028

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

Sector Weighting

Basic Materials 4.66%
Capital Goods 2.11%
Conglomerates 0.99%
Consumer Cyclical 2.17%
Consumer/Non-Cyclical 1.73%
Energy 8.32%
Financial 8.29%
Healthcare 19.64%
Services 16.24%
Technology 14.76%
Transportation 2.51%
Utilities 1.96%

1,906 Positions as of 12/31/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
SHIRE PLC SPONSORED ADR 2,641 2,469 1,433.43 10,918
MASCO CORP COM 2,636 -498 (15.9) 100,632
RETAILMENOT INC COM SER 1 2,634 -342 (11.48) 151,105
EBIX INC COM NEW 2,628 -316 (10.73) 99,982
MAGICJACK VOCALTEC LTD SHS 2,613 569 27.86 338,428
SANGAMO BIOSCIENCES INC COM 2,609 -331 (11.25) 155,129
AMERICAN CAPITAL AGENCY CORP COM 2,605 -3,837 (59.56) 121,543
HALLIBURTON CO COM 2,590 2,586 60,214 60,314
MGIC INVT CORP WIS COM 2,531 69 2.80 277,192
JETBLUE AIRWAYS CORP COM 2,522 2,145 568.93 146,724
LLOYDS BANKING GROUP PLC SPONSORED ADR 2,522 527 26.44 521,071
TIME WARNER CABLE INC COM 2,509 437 21.11 16,285
NORTHSTAR RLTY FIN CORP COM NEW 2,493 2,493 New 129,727
FOUNDATION MEDICINE INC COM 2,478 -918 (27.03) 51,876
VERIZON COMMUNICATIONS INC COM 2,474 -904 (26.75) 50,035
NEWLINK GENETICS CORP COM 2,463 1,090 79.43 57,166
WENDYS CO COM 2,407 1,903 377.78 217,011
TYSON FOODS INC CL A 2,382 2,016 550.89 57,669
GENWORTH FINL INC COM CL A 2,351 -866 (26.91) 303,392
INVESCO LTD SHS 2,334 2,334 New 57,969