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 1,920
New Positions 468
Increased Positions 924
Decreased Positions 970
Positions with Activity 1,894
Sold Out Positions 493
Total Mkt Value (in $ millions) 987

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

Sector Weighting

Basic Materials 4.77%
Capital Goods 1.29%
Conglomerates 0.55%
Consumer Cyclical 2.41%
Consumer/Non-Cyclical 1.67%
Energy 13.79%
Financial 6.67%
Healthcare 13.23%
Services 21.13%
Technology 20.04%
Transportation 3.48%
Utilities 4.66%

1,920 Positions as of 03/31/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
GENWORTH FINL INC COM CL A 3,698 -4,502 (54.9) 224,268
SUNEDISON INC COM 3,459 -11,250 (76.49) 152,711
ENDO INTL PLC SHS 3,437 513 17.53 51,104
NATUS MEDICAL INC DEL COM 3,378 2,553 309.30 133,466
BAZAARVOICE INC COM 3,270 -490 (13.02) 433,702
AMERICAN CAP LTD COM 3,156 18 .58 208,072
OCWEN FINL CORP COM NEW 3,153 -2,142 (40.45) 88,382
ACHILLION PHARMACEUTICALS INC COM 3,130 -1,200 (27.72) 458,974
LIONS GATE ENTMNT CORP COM NEW 3,117 107 3.55 97,238
CNOOC LTD SPONSORED ADR 3,116 1,599 105.45 17,858
SUPERNUS PHARMACEUTICALS INC COM 3,051 1,207 65.50 329,801
NEW GOLD INC CDA COM 3,011 2,147 248.44 479,417
AMERICAN RLTY CAP PPTYS INC COM 2,953 555 23.15 226,621
ACTAVIS PLC SHS 2,936 -7,855 (72.79) 13,459
BLACKSTONE GROUP L P COM UNIT LTD 2,903 1,275 78.37 81,317
ENCANA CORP COM 2,897 1,191 69.80 133,948
SONY CORP ADR NEW 2,860 7 .24 170,342
YANDEX N V SHS CLASS A 2,857 788 38.10 92,953
GT ADVANCED TECHNOLOGIES INC COM 2,831 2,831 New 190,756
CELLDEX THERAPEUTICS INC NEW COM 2,824 35 1.24 219,769


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