LCH published a notice indicating that their on-shore US based CCP SwapClear LLC will be officially open for business this coming Monday June 3rd. We shall have to wait for the data on SwapClear.com to be updated with notionals for this new business and see how it compares with the CME CCP for IRS over the medium term.

Details over at LCH website here: http://www.lch.co.uk/member_notices/circulars/2013-05-31.asp