Regulatory Alerts2026-01-14 | Trade Reporting Notice 1/14/26Added · Updated
Upcoming Trade Reporting Enhancements for Fractional Share Transactions
FINRA requires members to report fractional share quantities up to six decimal places in a new Fractional Share Quantity field, effective February 23, 2026, for NMS stock transactions. Members must populate both the Quantity and Fractional Share Quantity fields for fractional trades, rounding up the Quantity field to 1 if the whole number is zero, while leaving the Fractional Share Quantity field blank for whole share transactions. This guidance applies to Trade Entry, Correction, Cancel, and Reversal messages and specifically addresses scenarios where truncation would otherwise result in a zero quantity.
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