GROUP ONE TRADING, L.P. Information

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

Report Date: 09/30/2014

Position Statistics

Total Positions 1,891
New Positions 433
Increased Positions 932
Decreased Positions 878
Positions with Activity 1,810
Sold Out Positions 390
Total Mkt Value (in $ millions) 1,171

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

Sector Weighting

Basic Materials 3.46%
Capital Goods 1.72%
Conglomerates 0.83%
Consumer Cyclical 2.95%
Consumer/Non-Cyclical 2.23%
Energy 8.97%
Financial 7.32%
Healthcare 18.31%
Services 16.55%
Technology 15.56%
Transportation 2.2%
Utilities 3.77%

1,891 Positions as of 09/30/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
HARMONY GOLD MNG LTD SPONSORED ADR 386 240 164.49 199,823
PERION NETWORK LTD SHS 385 -67 (14.79) 83,923
MAGNACHIP SEMICONDUCTOR CORP N COM 385 190 97.71 28,269
SELECT COMFORT CORP COM 384 213 124.21 14,188
ST JOE CO COM 376 376 New 20,364
SPLUNK INC COM 374 -1,272 (77.28) 5,941
KONGZHONG CORP SPONSORED ADR 373 -113 (23.25) 65,512
DOMINION DIAMOND CORP COM 370 370 New 20,067
KELLOGG CO COM 370 370 New 5,521
PDC ENERGY INC COM 368 233 172.75 8,436
MEDIA GEN INC NEW COM 366 350 2,106.68 21,140
VIRNETX HLDG CORP COM 365 365 New 62,992
HI-CRUSH PARTNERS LP COM UNIT LTD 365 365 New 10,902
NEW YORK CMNTY BANCORP INC COM 365 320 714.43 22,584
VIVUS INC COM 362 362 New 122,307
PROSENSA HLDG N V SHS USD 359 305 564.33 19,073
AIR LEASE CORP CL A 358 271 309.98 10,311
SONUS NETWORKS INC COM 358 97 37.19 89,886
NOVAGOLD RES INC COM NEW 358 28 8.35 119,600
TYSON FOODS INC CL A 356 -397 (52.72) 8,860


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