A proposal from the Financial Industry Regulatory Authority to begin disseminating data for agency MBS traded as specified pools could compromise the confidentiality of market participants and discourage them from future participation, according to the Securities Industry and Financial Markets Association. The FINRA wants to implement shorter reporting timeframes for MBS-SP transactions (initially two hours, then one hour), as well as real-time dissemination of trade information. Volume information would be capped at $10 million. Trades above that amount would be displayed as “10+.” “Our dealer and...