(a) Millisecond Time Stamps
(1) Subject to paragraphs (a)(2) and (b), each Industry Member shall record and report Industry Member Data to the Central Repository with time stamps in milliseconds.
(2) Subject to paragraph (b), to the extent that any Industry Member's order handling or execution systems utilize time stamps in increments finer than milliseconds, such Industry Member shall record and report Industry Member Data to the Central Repository with time stamps in such finer increment up to nanoseconds; provided, that Industry Members that capture time stamps in increments more granular than nanoseconds must truncate the time stamps after the nanosecond level for submission to CAT, rather than rounding such time stamps up or down, until April 8, 2025.
(b) One Second Time Stamps/Electronic Order Capture
(1) Each Industry Member may record and report Manual Order Events to the Central Repository in increments up to and including one second, provided that each Industry Member shall record and report the time when a Manual Order Event has been captured electronically in an order handling and execution system of such Industry Member (“Electronic Capture Time”) in milliseconds; and
(2) Each Industry Member may record and report the time of Allocation Reports in increments up to and including one second.
