GROUP ONE TRADING, L.P. Information

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

Report Date: 03/31/2014

Position Statistics

Total Positions 1,921
New Positions 468
Increased Positions 924
Decreased Positions 971
Positions with Activity 1,895
Sold Out Positions 493
Total Mkt Value (in $ millions) 982

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

Sector Weighting

Basic Materials 4.84%
Capital Goods 1.3%
Conglomerates 0.57%
Consumer Cyclical 2.43%
Consumer/Non-Cyclical 1.7%
Energy 13.73%
Financial 6.66%
Healthcare 14.15%
Services 21.16%
Technology 21.52%
Transportation 3.5%
Utilities 4.57%

1,921 Positions as of 03/31/2014

Company Class Value of Shares ($1,000s) Change in Value ($1,000s) Change (%) ▲ Shares Held
3-D SYS CORP DEL COM NEW -3,017 Sold Out 0
3M CO COM -29 Sold Out 0
58 COM INC SPON ADR REP A -391 Sold Out 0
AASTROM BIOSCIENCES INC COM PAR$ Sold Out 0
ABBVIE INC COM -4,196 Sold Out 0
AEGON N V NY REGISTRY SH -15 Sold Out 0
AES CORP COM -7 Sold Out 0
AG MTG INVT TR INC COM -31 Sold Out 0
AIRCASTLE LTD COM -32 Sold Out 0
ALAMOS GOLD INC COM -6 Sold Out 0
ALASKA AIR GROUP INC COM -30 Sold Out 0
ALBEMARLE CORP COM -22 Sold Out 0
ALCOA INC COM -8 Sold Out 0
ALERE INC COM -452 Sold Out 0
ALIGN TECHNOLOGY INC COM -807 Sold Out 0
ALLISON TRANSMISSION HLDGS INC COM -41 Sold Out 0
ALLSCRIPTS HEALTHCARE SOLUTNS COM -106 Sold Out 0
ALON USA PARTNERS LP UT LTDPART INT -340 Sold Out 0
ALTISOURCE PORTFOLIO SOLNS SA REG SHS -393 Sold Out 0
ALUMINA LTD SPONSORED ADR -8 Sold Out 0


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