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 1,899
New Positions 413
Increased Positions 835
Decreased Positions 1,004
Positions with Activity 1,839
Sold Out Positions 468
Total Mkt Value (in $ millions) 1,033

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

Sector Weighting

Basic Materials 4.67%
Capital Goods 2.05%
Conglomerates 1.05%
Consumer Cyclical 2.27%
Consumer/Non-Cyclical 1.74%
Energy 9.03%
Financial 8.44%
Healthcare 19.15%
Services 16%
Technology 14.47%
Transportation 2.47%
Utilities 2.05%

1,899 Positions as of 12/31/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
GENWORTH FINL INC COM CL A 2,740 -1,009 (26.91) 303,392
MASCO CORP COM 2,731 -516 (15.9) 100,632
TRW AUTOMOTIVE HLDGS CORP COM 2,702 -2,670 (49.7) 25,717
CTRIP COM INTL LTD AMERICAN DEP SHS 2,687 2,360 723.73 42,109
RETAILMENOT INC COM SER 1 2,672 -346 (11.48) 151,105
NEWLINK GENETICS CORP COM 2,666 1,180 79.43 57,166
SHIRE PLC SPONSORED ADR 2,663 2,489 1,433.43 10,918
LLOYDS BANKING GROUP PLC SPONSORED ADR 2,647 553 26.44 521,071
AEGERION PHARMACEUTICALS INC COM 2,588 181 7.51 109,615
TIME WARNER CABLE INC COM 2,561 446 21.11 16,285
VERIZON COMMUNICATIONS INC COM 2,522 -921 (26.75) 50,035
AMERICAN CAPITAL AGENCY CORP COM 2,522 -3,715 (59.56) 121,543
NORTHSTAR RLTY FIN CORP COM NEW 2,465 2,465 New 129,727
AMICUS THERAPEUTICS INC COM 2,461 696 39.39 235,756
AVIS BUDGET GROUP COM 2,445 2,445 New 44,184
INVESCO LTD SHS 2,412 2,412 New 57,969
OCWEN FINL CORP COM NEW 2,375 2,223 1,462.09 231,486
FOUNDATION MEDICINE INC COM 2,362 -875 (27.03) 51,876
YELP INC CL A 2,359 1,129 91.82 59,331
TYSON FOODS INC CL A 2,335 1,976 550.89 57,669