GROUP ONE TRADING, L.P. Information

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

Report Date: 06/30/2014

Position Statistics

Total Positions 1,887
New Positions 465
Increased Positions 931
Decreased Positions 915
Positions with Activity 1,846
Sold Out Positions 419
Total Mkt Value (in $ millions) 1,036

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

Sector Weighting

Basic Materials 3.94%
Capital Goods 1.89%
Conglomerates 0.19%
Consumer Cyclical 2.68%
Consumer/Non-Cyclical 2.31%
Energy 13.06%
Financial 7.72%
Healthcare 15.94%
Services 19.95%
Technology 16.04%
Transportation 2.94%
Utilities 4.17%

1,887 Positions as of 06/30/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
PITNEY BOWES INC COM 3,301 3,301 New 122,229
ALCATEL-LUCENT SPONSORED ADR 3,273 -913 (21.82) 959,754
BIOMARIN PHARMACEUTICAL INC COM 3,270 3,270 New 46,971
BARNES & NOBLE INC COM 3,198 -1,709 (34.82) 135,128
CHARTER COMMUNICATIONS INC DEL CL A NEW 3,197 1,168 57.58 20,493
CONNS INC COM 3,074 2,585 528.96 68,726
ARUBA NETWORKS INC COM 3,049 1,768 137.94 143,974
TWENTY FIRST CENTY FOX INC CL A 3,036 1,106 57.27 85,278
RANGE RES CORP COM 3,025 3,025 New 38,663
MASCO CORP COM 2,960 1,628 122.23 125,911
GENWORTH FINL INC COM CL A 2,959 -194 (6.16) 210,445
MAGNUM HUNTER RES CORP DEL COM 2,911 1,652 131.29 428,108
DRYSHIPS INC SHS 2,906 -46 (1.56) 894,213
CALPINE CORP COM NEW 2,879 107 3.85 122,338
BLACKHAWK NETWORK HLDGS INC CL A 2,808 2,698 2,446.53 101,632
ZYNGA INC CL A 2,780 -721 (20.6) 965,183
E HOUSE CHINA HLDGS LTD ADR 2,778 -299 (9.71) 251,184
NUSTAR ENERGY LP UNIT COM 2,774 2,774 New 42,251
QEP RES INC COM 2,711 1,640 153.11 76,870
LEUCADIA NATL CORP COM 2,684 233 9.50 108,459