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| Proprietary Position and Margins for December 2011 |
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| Proprietary Position and Margins for November 2011 |
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| Proprietary position and Margins for October 2011 |
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| Proprietary position and Margins for September 2011 |
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| Proprietary position and Margins for August 2011 |
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| PROPRIETARY POSITION AND MARGINS for JULY 2011 |
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| PROPRIETARY POSITION AND MARGINS for JUNE 2011 |
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| Proprietary position and Margins for May 2011 |
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| Proprietary position and Margins for April 2011 |
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| Proprietary position and Margins for March 2011 |
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| Proprietary position and Margins for February 2011 |
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| Proprietary position and Margins for January 2011 |
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| Proprietary position and Margins for December 2010 |
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| Proprietary position and Margins for November 2010 |
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| Proprietary position and Margins for October 2010 |
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| Proprietary position and Margins for September 2010 |
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| Proprietary position and Margins for August 2010 |
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| Proprietary position and Margins for July 2010 |
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| Proprietary position and Margins for June 2010 |
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| Proprietary position and Margins for May 2010 |
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| Proprietary position and Margins for April 2010 |
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| Proprietary position and Margins for March 2010 |
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| Proprietary position and Margins for February 2010 |
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| Proprietary position and Margins for January 2010 |
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| Proprietary position and Margins for December 2009 |
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| Proprietary position and Margins for November 2009 |
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| Proprietary position and Margins for October 2009 |
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| Proprietary position and Margins for September 2009 |
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| Proprietary position and Margins for August 2009 |
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| Proprietary position and Margins for July 2009 |
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| Proprietary position and Margins for June 2009 |
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| Proprietary position and Margins for May 2009 |
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| Proprietary position and Margins for April 2009 |
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| Proprietary position and Margins for March 2009 |
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| Proprietary position and Margins for February 2009 |
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| Proprietary position and Margins for January 2009 |
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| Proprietary position and Margins for December 2008 |
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| Proprietary position and Margins for November 2008 |
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| Proprietary position and Margins for October 2008 |
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| Proprietary position and Margins for September 2008 |
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| Proprietary position and Margins for August 2008 |
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| Proprietary position and Margins for July 2008 |
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| Proprietary position and Margins for June 2008 |
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| Proprietary position and Margins for May 2008 |
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| Proprietary position and Margins for April 2008 |
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| Proprietary position and Margins for March 2008 |
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| Proprietary position and Margins for February 2008 |
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| Proprietary position and Margins for January 2008 |
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| Proprietary position and Margins for December 2007 |
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| Proprietary position and Margins for November 2007 |
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| Proprietary position and Margins for October 2007 |
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| Proprietary position and Margins for September 2007 |
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| Proprietary position and Margins for August 2007 |
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| Proprietary position and Margins for July 2007 |
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| Proprietary position and Margins for June 2007 |
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| Proprietary position and Margins for May 2007 |
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| Proprietary position and Margins for April 2007 |
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