Comments on MSRB Rulemaking

Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Revise the Effective Date of New Rule G-18, on Best Execution of Transactions in Municipal Securities, and Amendments to Rule G-48, on Transactions with Sophisticated Municipal Market Professionals, and Rule D-15, on the Definition of Sophisticated Municipal Market Professional

[Release No. 34-75751; File No. SR-MSRB-2015-10]