GROUP ONE TRADING, L.P. Information

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

Report Date: 12/31/2015

Position Statistics

Total Positions 1,738
New Positions 386
Increased Positions 824
Decreased Positions 844
Positions with Activity 1,668
Sold Out Positions 392
Total Mkt Value (in $ millions) 1,161

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

Sector Weighting

Basic Materials 9.57%
Capital Goods 2.41%
Conglomerates 0.42%
Consumer Cyclical 1.28%
Consumer/Non-Cyclical 5.49%
Energy 8.71%
Financial 8.84%
Healthcare 25.26%
Services 10.12%
Technology 14.89%
Transportation 2.03%
Utilities 2.23%

1,738 Positions as of 12/31/2015

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
ALLERGAN PLC SHS 69,064 55,057 393.07 318,915
21VIANET GROUP INC SPONSORED ADR 48,579 38,070 362.28 2,407,862
SHIRE PLC SPONSORED ADR 25,319 13,594 115.94 135,091
BARRICK GOLD CORP COM 24,949 2,196 9.65 1,288,030
MYLAN N V SHS EURO 22,051 8,908 67.78 528,670
OPKO HEALTH INC COM 21,723 4,546 26.47 2,020,776
ABBVIE INC COM 21,535 -2,118 (8.95) 353,026
AMERICAN AIRLS GROUP INC COM 20,859 -6,408 (23.5) 601,285
BLACKBERRY LTD COM 19,023 692 3.78 2,694,544
KINDER MORGAN INC DEL COM 14,272 11,125 353.50 803,607
INTEROIL CORP COM 14,047 4,001 39.83 419,685
VALEANT PHARMACEUTICALS INTL I COM 13,790 13,790 New 413,358
MONDELEZ INTL INC CL A 13,028 3,324 34.25 303,269
ALCOA INC COM 11,098 9,928 848.28 993,586
JOY GLOBAL INC COM 10,995 9,014 455.07 516,197
TEVA PHARMACEUTICAL INDS LTD ADR 10,712 1,896 21.50 196,740
TYSON FOODS INC CL A 10,302 10,302 New 156,517
OFFICE DEPOT INC COM 9,515 7,289 327.39 1,618,241
BROADCOM LTD SHS 9,464 195 2.11 64,933
BANCO SANTANDER SA ADR 9,375 253 2.78 1,863,901