GROUP ONE TRADING, L.P. Information

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

Report Date: 09/30/2014

Position Statistics

Total Positions 1,899
New Positions 435
Increased Positions 936
Decreased Positions 882
Positions with Activity 1,818
Sold Out Positions 392
Total Mkt Value (in $ millions) 1,211

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

Sector Weighting

Basic Materials 3.59%
Capital Goods 1.73%
Conglomerates 0.84%
Consumer Cyclical 2.94%
Consumer/Non-Cyclical 2.03%
Energy 10.81%
Financial 7.23%
Healthcare 17.76%
Services 16.21%
Technology 16.12%
Transportation 2.43%
Utilities 3.71%

1,899 Positions as of 09/30/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
WESTPORT INNOVATIONS INC COM NEW 416 -428 (50.73) 78,717
HDFC BANK LTD ADR REPS 3 SHS 415 415 New 8,009
VIVUS INC COM 410 410 New 122,307
ENSCO PLC SHS CLASS A 409 319 358.29 10,999
SPLUNK INC COM 404 -1,374 (77.28) 5,941
RESOLUTE FST PRODS INC COM 403 403 New 23,608
HILTON WORLDWIDE HLDGS INC COM 402 -128 (24.12) 15,447
LAMAR ADVERTISING CO NEW CL A 401 401 New 7,523
HARMAN INTL INDS INC COM 396 277 233.95 3,640
DOLLAR TREE INC COM 395 395 New 5,862
AIR LEASE CORP CL A 394 298 309.98 10,311
CONTROL4 CORP COM 393 375 2,066.38 25,130
WENDYS CO COM 391 -81 (17.17) 45,421
PROSENSA HLDG N V SHS USD 387 329 564.33 19,073
ROCKET FUEL INC COM 387 387 New 22,665
ABRAXAS PETE CORP COM 387 58 17.55 97,373
FLAGSTAR BANCORP INC COM PAR .001 383 112 41.07 24,767
ST JOE CO COM 382 382 New 20,364
SEALED AIR CORP NEW COM 381 381 New 9,741
BAZAARVOICE INC COM 381 -172 (31.14) 50,819


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