SIFMA AMG provided comments to the U.S. Commodity Futures Trading Commission (CFTC) on the CFTC’s supplement (Supplemental Proposal) to proposed Regulation Automated Trading (Reg AT). While SIFMA AMG supports the CFTC’s aim of protecting futures exchanges and market participants from the potential risk of market disruption that could be caused by a lack of controls on certain types of algorithmic trading, AMG does not support the unnecessarily complex, overbroad, redundant, burdensome, and costly framework that would be imposed by Proposed Reg AT, as originally formulated in the 2015 Proposal and as modified in the Supplemental Proposal.