The Commission’s recent enforcement action against Edward D. Jones involving the offer and sale of municipal bonds to retail investors highlights the need for clear rules requiring the disclosure of mark-ups and mark-downs.[1] We encourage the Financial Industry Regulatory Authority (FINRA) and the Municipal Securities Rulemaking Board (MSRB) to complete rules mandating transparency of mark-ups and mark-downs, even in riskless principal trades. If not, we believe the Commission should propose rules to address this important issue.