01/07/2010 - EDX Margin Rate Circular
29/07/2010 - EnClear Margin Rate Circular
10/07/2009 - EquityClear Margin Rate Circular (Last updated October 2009)
15/07/2010 - NYSE Liffe Margin Rate Circular
23/06/2010 - LME Margin Rate Circular
25/05/2010 - RepoClear Margin Rate Circular
23/07/2010 - Nodal Exchange Margin Rate Circular