GROUP ONE TRADING, L.P. Information

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

Report Date: 03/31/2016

Position Statistics

Total Positions 1,706
New Positions 364
Increased Positions 683
Decreased Positions 950
Positions with Activity 1,633
Sold Out Positions 515
Total Mkt Value (in $ millions) 911

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

Sector Weighting

Basic Materials 11.61%
Capital Goods 1.7%
Conglomerates 0.55%
Consumer Cyclical 0.94%
Consumer/Non-Cyclical 2.65%
Energy 7.67%
Financial 10.85%
Healthcare 21.34%
Services 10.02%
Technology 16.52%
Transportation 1.83%
Utilities 2.15%

1,706 Positions as of 03/31/2016

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
FOUNDATION MEDICINE INC COM 4,899 13 .26 283,990
VIPSHOP HLDGS LTD SPONSORED ADR 4,768 3,095 184.92 454,546
OUTERWALL INC COM 4,667 4,145 792.83 126,451
BIOMARIN PHARMACEUTICAL INC COM 4,626 1,305 39.30 53,513
ENDO INTL PLC SHS 4,604 4,604 New 298,159
DEVON ENERGY CORP NEW COM 4,586 4,266 1,332.33 133,894
CORNING INC COM 4,575 4,575 New 234,512
PANDORA MEDIA INC COM 4,430 -1,696 (27.68) 411,290
ISHARES SILVER TRUST ISHARES 4,256 1,600 60.20 271,280
SEAWORLD ENTMT INC COM 4,122 825 25.01 233,805
MARATHON PETE CORP COM 4,004 3,485 670.92 109,309
RITE AID CORP COM 3,959 -767 (16.23) 516,900
FRANKLIN RES INC COM 3,878 3,878 New 109,067
EL POLLO LOCO HLDGS INC COM 3,745 1,588 73.62 347,748
RIO TINTO PLC SPONSORED ADR 3,707 457 14.06 130,957
CUMMINS INC COM 3,679 3,679 New 34,000
SINA CORP ORD 3,634 3,147 646.42 79,807
ALIBABA GROUP HLDG LTD SPONSORED ADS 3,508 1,471 72.24 44,527
YAHOO INC COM 3,496 1,825 109.21 95,783
SCHWAB CHARLES CORP NEW COM 3,446 3,446 New 117,057


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