On May 16, 2013 the CFTC approved the \’made-available-to-trade\’ (MAT) rule, which gives the market clarity on which products must be, by law, traded on swap execution facilities (SEFs). Once the CFTC issues a MAT determination, a mandate is established for trading that product on SEF, which prevents it from being traded bilaterally by counterparties subject to the SEF requirements. This analysis builds on ISDA\’s earlier work on SEFs by focusing on the effects of the MAT regulation and its potential impact on market fragmentation.