GROUP ONE TRADING, L.P. Information

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

Report Date: 12/31/2014

Position Statistics

Total Positions 1,901
New Positions 414
Increased Positions 835
Decreased Positions 1,006
Positions with Activity 1,841
Sold Out Positions 470
Total Mkt Value (in $ millions) 1,062

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

Sector Weighting

Basic Materials 4.43%
Capital Goods 1.99%
Conglomerates 1.01%
Consumer Cyclical 2.2%
Consumer/Non-Cyclical 1.73%
Energy 8.53%
Financial 8.19%
Healthcare 19.69%
Services 16.02%
Technology 14.45%
Transportation 2.45%
Utilities 1.99%

1,901 Positions as of 12/31/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
NQ MOBILE INC ADR REPSTG CL A 4,733 -904 (16.03) 1,126,967
APOLLO GLOBAL MGMT LLC CL A SHS 4,729 -4,000 (45.83) 214,738
GULFPORT ENERGY CORP COM NEW 4,706 -4,474 (48.74) 96,553
INFINERA CORPORATION COM 4,678 3,165 209.15 232,165
QEP RES INC COM 4,658 -108 (2.28) 210,101
LEUCADIA NATL CORP COM 4,614 980 26.98 200,164
GOLAR LNG LTD BERMUDA SHS 4,584 -3,276 (41.68) 130,082
TARGA RES CORP COM 4,566 1,755 62.44 42,739
BARNES & NOBLE INC COM 4,463 63 1.42 192,718
YRC WORLDWIDE INC COM PAR $.01 4,449 286 6.88 263,890
3-D SYS CORP DEL COM NEW 4,425 2,912 192.50 162,509
ADVANCED MICRO DEVICES INC COM 4,403 166 3.91 1,914,168
VALE S A ADR 4,341 -222 (4.86) 548,163
AMERICAN CAP LTD COM 4,277 -958 (18.31) 280,812
CHIMERA INVT CORP COM NEW 4,277 -685 (13.81) 275,024
CONNS INC COM 4,160 1,963 89.32 134,861
YANDEX N V SHS CLASS A 4,158 1,422 51.98 201,161
VALEANT PHARMACEUTICALS INTL I COM 4,080 -8,981 (68.76) 19,390
VERTEX PHARMACEUTICALS INC COM 4,050 -4,229 (51.08) 30,402
ALIBABA GROUP HLDG LTD SPONSORED ADS 3,848 3,379 720.17 45,503


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