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 1,895
New Positions 435
Increased Positions 933
Decreased Positions 881
Positions with Activity 1,814
Sold Out Positions 391
Total Mkt Value (in $ millions) 1,150

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

Sector Weighting

Basic Materials 3.46%
Capital Goods 1.71%
Conglomerates 0.83%
Consumer Cyclical 2.95%
Consumer/Non-Cyclical 2.23%
Energy 9.02%
Financial 7.33%
Healthcare 18.92%
Services 16.41%
Technology 15.28%
Transportation 2.18%
Utilities 3.71%

1,895 Positions as of 09/30/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
AMERICAN AIRLS GROUP INC COM 96,531 65,744 213.54 1,925,238
BLACKBERRY LTD COM 34,648 -6,964 (16.74) 3,440,697
ACTAVIS PLC SHS 31,047 15,132 95.07 117,715
ASTRAZENECA PLC SPONSORED ADR 25,126 17,739 240.13 348,446
KINDER MORGAN INC DEL COM 24,625 9,289 60.57 607,117
HERTZ GLOBAL HOLDINGS INC COM 22,094 12,499 130.27 979,758
SIRIUS XM HLDGS INC COM 19,065 -871 (4.37) 5,518,123
TWITTER INC COM 17,288 -1,663 (8.78) 470,671
ACADIA PHARMACEUTICALS COM 13,235 -1,279 (8.81) 402,944
RITE AID CORP COM 12,975 4,401 51.33 1,913,763
YPF SOCIEDAD ANONIMA SPON ADR CL D 12,047 -4,805 (28.51) 494,330
JAZZ PHARMACEUTICALS PLC SHS USD 11,883 1,525 14.73 69,948
VERIFONE SYS INC COM 11,120 10,753 2,931.62 299,403
MBIA INC COM 10,278 5,944 137.16 1,102,830
TESLA MTRS INC COM 9,160 -337 (3.55) 41,968
NORTHSTAR RLTY FIN CORP COM 8,986 8,986 New 517,016
APOLLO GLOBAL MGMT LLC CL A SHS 8,943 2,714 43.56 396,396
VALEANT PHARMACEUTICALS INTL I COM 8,876 496 5.92 62,073
INTEROIL CORP COM 8,802 6,775 334.25 176,280
ACHILLION PHARMACEUTICALS INC COM 8,798 -2,726 (23.65) 604,906