[ Howard Haykin ] FINRA has amended Rule 7610A, Securities Transaction Credit, relating to the FINRA/Nasdaq TRF (or Trade Reporting Facility).  Specifically, FINRA is codifying the definition of, and methodology for, determining “attributable revenue” for purposes of calculating securities transaction credits earned by members that use the FINRA/Nasdaq Trade Reporting Facility. As proposed, FINRA is clarifying that "attributable revenue" is the member’s pro rata share of the gross market data revenue that the FINRA/Nasdaq TRF receives from the Consolidated Tape Association or the Nasdaq Securities Information Processor, determined by the average of the member’s percentage of transaction reports and the member’s percentage of share volume in each security reported to the FINRA/Nasdaq TRF during a given calendar quarter.  Attributable revenue is calculated separately for each tape. The proposed definition reflects the current methodology used to determine "attributable revenue."  Specifically, today such determination is based on an average of both the trades and shares in each security that a member has submitted to the FINRA/Nasdaq TRF.  Although not expressly defined in the rule, this methodology is explained in detail in the Revenue Share Fact Sheet available on NASDAQ’s website.  Thus, the proposed rule change would codify, without modification, the methodology that is used today for determining a member’s attributable revenue. For further details, go to:  [FINRA Rule Filing 12-22, 5/2/12].